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181 results about "Cross slope" patented technology
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Cross slope, cross fall or camber is a geometric feature of pavement surfaces: the transverse slope with respect to the horizon. It is a very important safety factor. Cross slope is provided to provide a drainage gradient so that water will run off the surface to a drainage system such as a street gutter or ditch. Inadequate cross slope will contribute to aquaplaning. On straight sections of normal two-lane roads, the pavement cross section is usually highest in the center and drains to both sides.
Motor grader and control system therefore
ActiveUS7588088B2Analogue computers for trafficMechanical machines/dredgersHydraulic cylinderControl signal
Owner:CATERPILLAR TRIMBLE CONTROL TECH
Existing line reinforcing method in under-crossing railway frame bridge small-included angle large-height inclined jacking construction
InactiveCN102359069AControl traverseEnsure stabilityBridge erection/assemblyRailway track constructionWorkloadSupport point
The invention discloses an existing line reinforcing method in under-crossing railway frame bridge small-included angle large-height inclined jacking construction. The method comprises the following steps of: reinforcing an existing line by using an overhead rail (9) along the line, and supporting the existing line by using a plurality of horizontal lifting beams (5) which are vertical to the line direction at certain intervals below the existing line, and using manual hold digging piles (1) on the lower left and right of the horizontal lifting beams (5) as support points of the horizontal lifting beams on two sides of the line; laying a steel slideway (6) between a frame top (8) and the horizontal lifting beams (5) along the jacking direction; meeting the requirements of a longitudinal slope and a cross slope of the line by using wedge-shaped wood (12) between a sleeper (20) and the horizontal lifting beams (5); and before the hole digging piles are broken, transferring the load of the pile top to the frame top (8) through the steel slideway (6), and circularly breaking the piles and jacking. By the method, the vertical and horizontal rigidity of the line are enhanced, the stability of the line during jacking is ensured, the workload for manually maintaining the line is reduced, and the driving safety is ensured.
Owner:RAILWAY NO 10 ENG GRP CO LTD
Leveler intelligent leveling system and its method
ActiveCN101117809AFast and efficient automatic levelingGuarantee the smoothness of the workSoil-shifting machines/dredgersControl using feedbackControl signalControl valves
An intelligent level system and a related level method for a leveling machine, the system is characterized in that according to the spatial location of a perching knife, the system monitors that a sensor receives signals at the position of the perching knife, and automatically sends out an automatic leveling electric control system of control signals to an electric controlled hydraulic valve which controls a perching knife oil cylinder, and receives control signals of the automatic leveling electric control system to drive an automatic level hydraulic system of the perching knife leveling automatically. The method is as follows: initialization: the parameter setting is judged to be required or not; the sub-program of parameter setting is accessed; the parameter calibration is judged to be required or not; the sub-program of parameter setting is accessed; automatic leveling is judged to be required or not; manual tuning is judged to be required or not; yes, manual tuning is performed; no, a height leveling sub-program and an angle leveling sub-program are performed; the control mode is judged whether M is equal to 0 or not; control signal phases of the left control valve and the right control valve are modulated; the modulated control signal is outputted to an electric control valve for lifting the oil cylinder. The present invention is applicable for precision control of the cross slope, super high turning, road clothoid, etc. with regular change of the cross slope.
Owner:TIANJIN ENG MACHINERY INST
Big cross slope and small downward slope type slope terraced field structure and construction method thereof
InactiveCN101999264AImproved efficiency of sand retentionLight weightConstructionsSoil drainageLower borderEngineering
The invention discloses a big cross slope and small downward slope type slope terraced field structure and a construction method thereof. The structure is as follows: the upper border and the lower border of a sloping surface plot are provided with plant protective ridge terraces, the upper side and the lower side of each terrace are respectively provided with a side ditch and a back ditch, and other periphery of the sloping surface plot is provided with drainage ditches connecting with the upper border terrace back ditches and the lower border terrace side ditches along the slope surface to form a drainage network drain; the sloping surface plot in the drainage network drain is divided into multiple downward slope ridging zones by cross slop damming ditches; a plurality of small ridging downward slopes are evenly distributed in the downward slope ridging zones; a ditch is arranged between adjacent small downward slopes; and all the ditches in the downward slope ridging zones are communicated with the damming ditches and side ditches of the cross slope. The invention has the characteristics of retaining water, reducing erosion, saving labor force and being convenient for operation.
Owner:INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
Coal mining subsidence area administration method for loess hilly-gully region
InactiveCN104652451AThe method steps are simpleReasonable designEmbankmentsCultivating equipmentsMedicineLandform
The invention discloses a coal mining subsidence area administration method for a loess hilly-gully region. The method comprises the following steps: 1, measuring the width of a crack opening; 2, determining a crack administration scheme, wherein the crack administration scheme is an on-site filling method or a combined crack filling and micro-slope reconstruction administration method; 3, performing crack administration, wherein a crack to be administrated is filled with a soil body when the on-site filling method is adopted; the combined crack filling and micro-slope reconstruction administration method for administration comprises the following steps: 301, measuring an inclination angle of the crack; 302, judging an inclination angle value of the crack; 303, performing cross slope crack administration; 304, along-slope crack administration; 4, repeating step 1 to step 3 for many times until all subsided cracks in a loess slope of a coal mining subsidence area are administrated. The steps are simple, the method is reasonable in design, convenient to implement and construct and shorter in construction cycle, and has good administration effects, and the coal mining subsidence area of the loess hilly-gully region can be effectively administrated.
Owner:XIAN UNIV OF SCI & TECH
Alien soil for slope protection of loess slope plants
The invention relates to alien soil for slope protection of loess slope plants, which not only meets the physical structures for the growth of the slop plants in the semi-arid loess area, but also has good water storage capacity, water retention and nutrient preserving capability, provides moisture and nutrient for the growth of the plants, and has certain cementitiousness so as to be attached to the loess slope by means of engineering measures. The alien soil comprises the following components by weight part: 800-900 parts of sandy loess, 100-200 parts of soil conditioner, 1-2 parts of water retention agent, 0 to 1 part of caking agent, and 2-5 parts of compound fertilizer. The invention not only can improve the structure of sandy loess, but also provide the soil environment for the growth of the slop plants, and more importantly, effectively solves the problems of difficult vegetation protection of slopes due to the lack of water and difficult water retention in the northern semi-arid loess area. The invention mainly adopts disused soil, and has the advantages of readily available raw materials, low cost, simple construction and being favorable for reducing slope protection engineering investment.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD
Method for evaluating attenuation degree of porous asphalt mixture void
InactiveCN103323381ASimplify the test operation processIn line with the actual situationPermeability/surface area analysisUltrasound attenuationTester device
The invention discloses a method for evaluating attenuation degree of porous asphalt mixture void. The method is characterized by comprising the following steps: molding a plate test piece by rolling according to the grade of a porous asphalt mixture to be evaluated; coating a sealing material on three side faces and a bottom surface of the test piece to seal the surface voids, putting the test piece on a drainage coefficient tester, and taking a side face where the sealing material is not coated as a drainage channel; setting the testing slope of the drainage coefficient tester according to cross slope of the pavement, and testing to obtain an initial value of the drainage coefficient of the test piece; performing a wheel tracking test on the test piece, wherein the wheelmark track is required to be parallel to the drainage side face of the test piece during test; and after the wheel tracking test, testing the final drainage coefficient of the test piece by employing the drainage coefficient tester; comparing the final drainage coefficient with the initial value, and evaluating the attenuation degree of the porous asphalt mixture voids. The method can evaluate the attenuation degree of the porous asphalt pavement pore structure under the repetitive vehicle action and is used for selecting proper aggregate grading in the process of designing the porous asphalt mixture.
Owner:HOHAI UNIV
BIM parametric design method for bridge superstructures
PendingCN108304631AMake up for the inability to build such a complex spatial structure modelClear thinkingGeometric CADDesign optimisation/simulationBridge engineeringOffset distance
The invention discloses a BIM parametric design method for bridge superstructures, and relates to the field of bridge engineering design, construction and detection. The method comprises the followingsteps of: (1) extracting a space coordinate, a cross slope angle and an oblique crossing angle corresponding to a mileage stake mark corresponding to a path in a bridge range; (2) reading space coordinate point data and generating a path space curve; (3) making a bridge cross section profile; (4) carrying out space coordinate transformation, and arranging the bridge cross section profile at a path control point position; (5) adjusting a rotation angle of the cross section profile according to the cross slope angle; (6) generating the cross section profile into an entity model along the path by utilizing a lofting or lofting fusion function; (7) shearing two ends of the bridge according to the oblique crossing angle so as to complete a bridge upper major structure model; and (8) repeatingthe steps (1) to (7) according to offset distances between components such as a bridge deck system and the like and a road axis so as to generate a complete model. According to the method, the difficulty of establishing three-dimensional models of bridge special-shaped space structures is solved, and parameterization is realized by utilizing data reading and visual programming, so that the precision and efficiency are greatly improved.
Owner:北京市政路桥锐诚科技有限公司
Construction paying off method for determining boundary point of side slope of subgrade on terrain line
ActiveCN101846516AImprove stakeout efficiencyGuaranteed construction accuracySurveying instrumentsExcavationsTerrainShortest distance
The invention provides a construction paying off method for determining the boundary point of a side slope of a subgrade on a terrain line, which can improve the paying off efficiency of the boundary point of the side slope of the subgrade and meet the requirement for the construction precision of the side slope of the subgrade, and can be extensively completed by testing an intervisible part of any survey station arranged outside the design center line of a road. The method comprises the following steps of: setting a mileage reference point on the center line of a road, evaluating the shortest distance between the side point of the center line and the horizontal curve of the road by using the method of uniform approach so as to determine the vertical distance and the foot-point mileage between the slope point subjected to on-site pretesting and the design center line of the road in a plane; calculating the theoretical horizontal distance between a crossover point of an elevation surface on which the pretesting point is positioned and the design line of the side slope and the design line of the subgrade according to the design parameters such as the center-line elevation and the subgrade at the mileage, the width of a structure, the slope ratios and the step numbers of the cross slope and the side slope, and the like; subtracting the vertical distance from the theoretical horizontal distance so as to obtain the displacement from the pretesting pint to the theoretical boundary point; and moving the pretesting point, and repeating the steps to make the displacement asymptotically to zero so as to determine the position of the boundary point of the side slope.
Owner:华邦建投集团股份有限公司
Motor Grader Cross Slope Control With Articulation Compensation
InactiveUS20140326471A1Analogue computers for trafficMechanical machines/dredgersControl theoryKnife blades
A motor grader is provided having cross slope cut angle control for providing accurate cuts generally, and particularly while the machine is travelling in other than a straight and level fashion. A controller is configured to adjust the cross slope angle of the blade, so that the cross slope cut angle corresponds to a desired cross slope cut angle. The controller receives a signal indicative of the desired cross slope cut angle and executing a pure pursuit procedure to identify a blade cross slope angle to yield the desired cross slope cut angle. The pure pursuit procedure includes identifying a blade travel direction, and identifying a horizontal component thereof. The blade edge is projected onto a plane perpendicular to the horizontal component of the blade travel direction, generating a slope function specifying the cross slope cut angle as a function of blade cross slope angle.
Owner:CATERPILLAR INC
Road horizontal curve radius and safe speed limitation setting method of rainy areas
The invention discloses a road horizontal curve radius and safe speed limitation setting method of rainy areas. A calculation model suitable for road horizontal curve radius and safe speed limitationin rainy areas is constructed by taking influences of rainy day conditions on environmental visibility and tire-road friction coefficient into consideration and combining parameters of the road horizontal curve radius, velocity, cross slope values and the like. The method comprises the steps that sight distance in a horizontal curve road section is calculated; stopping sight distance in the horizontal curve road section is calculated; relationship comparison between the sight distance in the horizontal curve road section and the stopping sight distance in the horizontal curve road section is conducted; a road horizontal curve radius and safe speed limitation setting calculation model is constructed; parameter calibration is conducted on the road horizontal curve radius and safe speed limitation setting calculation model; comparison analysis is conducted between existing standard values and safe speed limitation model calculation values based on the sight distance; result comparison isconducted by using the existing standard values and the safe speed limitation model calculation values, the road horizontal curve radius and safe speed limitation values in the rainy areas are set, and the method has significant meaning in improving driving safety under rainy day conditions.
Owner:HEFEI UNIV OF TECH
Pitting field and hedgerow combined farming mode and structure thereof
InactiveCN104429207AReduce tillage lengthCombining farming habitsAgriculture gas emission reductionExcavationsRill erosionEngineering
The invention provides a pitting field and hedgerow combined farming mode and a structure thereof. According to the invention, the upper and lower edges of a slope-surface land parcel are provided with permanent slope-protecting ridges; gutters are dug at the outer sides of the ridges and at the left and right sides of the slope-surface land parcel; the gutters are interconnected to form a slope-surface gutterway; horizontal interception ditches with equal altitude are dug in the interior of the slope-surface land parcel from top to bottom according to critical slope length which leads to rill erosion, so the slope-surface land parcel is divided into a plurality of farming districts with equal length; ridges and furrows are constructed along slope direction in the farming districts; the downslope furrows, the interception ditches with equal altitude and the slope-surface gutters are communicated to form a slope-surface water drainage network; downslope furrow pitting field earth ridges and equal-attitude interception ditch pitting field earth ridges are constructed in the downslope furrows and the interception ditches at same intervals, thereby forming downslope furrow pitting fields; and cross slope ridges with equal altitude are constructed at the middle parts of the farming districts, and water-retaining plants are planted on the ridges to form ridge hedgerow. The combined farming mode provided by the invention has the advantages of simple operation, low cost and substantial control effect on water and soil loss.
Owner:INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI +2
Pile-anchor-frame composite double-layer roadbed structure
InactiveCN104018405AImprove performanceAvoid damageRoadwaysClimate change adaptationTerrainEconomic benefits
The invention discloses a pile-anchor-frame composite double-layer roadbed structure and belongs to the technical field of highway engineering. The pile-anchor-frame composite double-layer roadbed structure comprises main components such as anti-skidding piles, pre-stressed anchor cables, supporting columns, connecting beams, footing beams and pavement slabs, has multiple functions of mountain anchoring, side slope retaining, pavement supporting and double-layer traveling, has the characteristics of full playing of structure efficiency, high structure space utilization rate, excellent structure stability and anti-seismic property, moderate construction difficulty, high engineering adaptability, good environment benefit, good economic benefit and the like, is applicable to all-level highways under the condition of mountainous steep terrain, and is particularly applicable to multi-lane highways under the terrain condition that the ground cross slope is 30-45 degrees.
Owner:BEIJING UNIV OF TECH
Motor grader and control system therefore
ActiveUS20080000659A1Raising and loweringAccuracy meetsAnalogue computers for trafficMechanical machines/dredgersHydraulic cylinderControl signal
A motor grader has a control system in which the manner of controlling the blade position differs depending upon whether the blade is to be moved vertically or is to be maintained at a generally constant level and cross slope. First and second hydraulic valves control the flow of hydraulic fluid to the first and second hydraulic cylinders which raise and lower respective ends of the blade. An inclinometer provides an inclinometer output indicating the inclination of the blade along its length with respect to horizontal. The control system includes a first hydraulic cylinder position sensor for determining the extension of the first hydraulic cylinder. The control system further includes a control that is responsive to a control input specifying the desired height and cross slope of the blade, to the first hydraulic cylinder position sensor, and to the inclinometer output. The control provides valve control signals to the first and second hydraulic valves. The control provides a first valve control signal to the first hydraulic valve in dependence upon a desired height specified by the control input, and the control provides a second valve control signal to the second hydraulic valve in dependence upon the inclinometer output and upon the cross slope specified by the control input. However, when the blade is to be moved upward or downward with the retraction or extension of the first cylinder, the control provides the second valve control signal to the second hydraulic valve in dependence upon the first hydraulic cylinder position sensor such that the second hydraulic cylinder retracts and extends with the first hydraulic cylinder, maintaining the cross slope angle of the blade as a constant.
Owner:CATERPILLAR TRIMBLE CONTROL TECH
Automatic transverse level-adjusting mechanism for vehicle chassis
InactiveCN102975787ARealize automatic adjustmentSatisfy plant protectionVehiclesVehicle frameTransverse level
The invention relates to an automatic transverse level-adjusting mechanism for a vehicle chassis, which belongs to a vehicle travelling system. The automatic transverse level-adjusting mechanism comprises a carriage, a combined rigid body thereof, balancing rods, left connecting rods, right connecting rods, left supporting rods, right supporting rods, left axles, right axles, a chassis, left wheels and right wheels. As the vehicle chassis travels and operates, the wheels are in contact with the ground for bearing, the left supporting rods and the right supporting rods respectively move in a manner relative to the carriage, so that the balancing rods make a certain angle with the carriage, and thereby therefore the level of the chassis is transversely and automatically adjusted. As the vehicle chassis travels and operates on the flat ground or the cross slope, the level of the chassis can always be self-adaptively and transversely adjusted, and thereby therefore the requirements of the crop protection, harvest, transportation and other operation tasks of the agricultural power chassis on a hilly land can be met.
Owner:CHINA AGRI UNIV
Road water-logging area identification method based on three-dimensional line laser technology
ActiveCN107092803AEasy to solveInformaticsSpecial data processing applicationsLaser technologyPoint cloud
The invention discloses a road water-logging area identification method based on a three-dimensional line laser technology. The method comprises the following steps that: S1: selecting a benchmark road surface, executing plane calibration, taking the benchmark road surface as a benchmark plane, and measuring the position coordinate and the altitude data of the road surface, and storing the position coordinate and the altitude data as three-dimensional point cloud data; S2: using a four-point average method to repair an abnormal value and zero value data; S3: dividing a three-dimensional point cloud data area into a plurality of squares with the same area, fitting the trend line of the altitude data in the squares to calculate cross slopes and longitudinal slopes, and solving a synthesis slope; S4: calculating the water-collecting amount of each cell square; S5: calculating an integral road section water-logging amount; and S6: calculating the area and the depth of a water-collecting area. By use of the method, a road water-logging area can be predicted, and influences and harms generated for travelling cranes and pedestrians during water logging can be avoided.
Owner:CHANGAN UNIV +1
Telescopic screed and paving machine thereof
ActiveUS20160040369A1Improve structural rigidityCompact spaceRoads maintainenceScreedArchitectural engineering
A telescopic screed is provided which includes main section and telescopic section screeds, the main section screed includes a screed frame and a base plate; the telescopic section screeds are arranged on the left side and / or the right side of the main section screed and include a cross slope framework, a cross slope driver, at least two multistage sliding pipes, a telescopic frame, a telescopic driver, a telescopic section frame, a telescopic section base plate and an elevation difference driver; the cross slope framework is pivotally connected with the main section screed to adjust the cross slope; the multistage sliding pipes are used for transversely guiding the telescopic frames to achieve the telescopic ability of the telescopic section screeds; the telescopic section frame is connected with the corresponding telescopic frame to move up and down to adjust the relative height between the telescopic section frame and the telescopic frame.
Owner:DYNAPAC CHINA COMPACTION & PAVING EQUIP
Routing table water discharging system in construction period of expressway reconstruction and extension project
ActiveCN103266549AEnsure the construction quality of renovation and expansionGuarantee the construction qualityPaving gutters/kerbsClimate change adaptationWater dischargeRouting table
The invention discloses a routing table water discharging system in a construction period of an expressway reconstruction and extension project. The routing table water discharging system comprises a temporary water bar, new embankment surface temporary water discharging tanks, a new embankment surface cross slope and a new embankment side ditch. At first, the temporary water bar with the height of 0.1m is built along the outer side of an old embankment curb; old embankment riffle tanks are connected at an opening of the temporary water bar; the lower end of each old embankment tank is jointed with the corresponding new embankment surface temporary discharging tank; and the new embankment side ditch is connected with the new embankment surface temporary discharging tanks. With the adoption of the construction period routing table water discharging system provided by the invention, water on the surface of an old road, water on a slope of an old embankment and water on the surface of a new embankment can be effectively excluded from a roadbed range, so as to avoid the damages of roadbed erosion, water damage and the like caused by unsmooth water discharging during the construction period of the expressway reconstruction and extension project. Therefore, the quality of expressway reconstruction and extension construction is ensured; and the routing table discharging system has the advantages of being simple in implementation, low in cost and convenient in dismounting.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Bituminous mixture permeability testing device and method
The invention discloses a bituminous mixture permeability testing device. The testing device is characterized by comprising a water storage tank and a base, wherein multiple through holes are formed in a bottom plate of the water storage tank, and drain holes are formed in the side face of the water storage tank; the base is provided with an upper bottom plate and a lower bottom plate, one end of the upper bottom plate and one end of the lower bottom plate are connected through a hinge, a height adjusting device is arranged at the other ends and used for changing the slope of the upper bottom plate, an enclosure is arranged on the periphery of the upper bottom plate, the upper bottom plate is provided with clamping grooves and a partition plate, the water storage tank can be inserted into the clamping grooves to be fixed, and the partition plate is connected with the enclosure. The invention relates to a bituminous mixture permeability testing method. A road surface cross slope is simulated through the slope of the upper bottom plate, rainfall intensity is simulated by adjusting heights of the drain holes, surface drained water, transverse permeating water and internal residual water of a test piece are collected separately, and the permeability and water-retaining property of the bituminous mixture test piece are revealed more vividly and visually.
Owner:HOHAI UNIV
Simulated rainfall pattern macro-porous pavement water drainage capacity testing equipment and method
ActiveCN104677800AControl drainageStrong practical valuePermeability/surface area analysisPorous pavementEngineering
The invention discloses simulated rainfall pattern macro-porous pavement water drainage capacity testing equipment and a testing method. The simulated rainfall pattern macro-porous pavement water drainage capacity testing equipment comprises simulated rainfall system equipment, a test bed, a test bed supporting frame, a test piece clamp, a scale plate for measuring the rainfall height, and a drained water collecting device. The problems of actual water drainage capacity test of macro-porous water drainage asphalt pavements can be solved by quantitatively simulating different rainfall patterns, pavement cross slopes, the rainfall height and the vertical and lateral flow of water on the asphalt pavements. By adopting the testing equipment disclosed by the invention, the defects that no tilt angles can be provided, the time of test processes is limited, different rainfall patterns cannot be simulated, and the rainfall flow velocity and rainfall pressure intensity cannot be controlled when water permeability coefficients of an asphalt mixture test piece are tested by using existing testing regulations can be overcome, and the real lateral water drainage capacity and vertical water drainage capacity of the macro-porous water drainage asphalt pavements under different rainfall patterns can be fully and effectively simulated.
Owner:BROADVISION ENG CONSULTANTS
Hedge earth bank ridge-direction pitting field having functions of conserving water, soil, nitrogen and phosphorus and cultivation method
InactiveCN105145068AImprove retentionIncrease moisture contentHorticultureSoil-working methodsEconomic benefitsNitrogen
The invention relates to a hedge earth bank ridge-direction pitting field having functions of conserving water, soil, nitrogen and phosphorus. The field comprises ridges and multiple earth banks, and the ridges comprise ridge bodies and furrows; the multiple ridge bodies and the multiple furrows are arranged in parallel and at intervals; multiple earth banks are arranged in each furrow in the extending direction of the corresponding furrow, and each earth bank is provided with a hedge. The invention further relates to a cultivation method of the ridge-direction pitting field. The cultivation method comprises the steps of measuring the slope and length of the field; making selection between downslope ridge culture or cross-slope ridge culture according to the measured slope and length, and arranging the multiple furrows and ridge bodies, wherein the furrows and the ridge bodies are arranged in parallel and at intervals; arranging the multiple earth banks in each furrow in the extending direction of the corresponding furrow; planting plants on each earth bank for forming the corresponding hedge. According to the hedge earth bank ridge-direction pitting field and the cultivation method, the hedges are reasonably arranged, the stability and firmness of the earth banks are improved, meanwhile, the water, soil, nitrogen and phosphorus conservation effects are greatly improved, the water and soil conservation effect is made to be more ideal, environmental benefits are achieved, and meanwhile economic benefits are combined.
Owner:INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
Fast automatic measurement method for road structural parameter and its implementing apparatus
InactiveCN101487220AEffective and convenient monitoringMeasurement devicesRoads maintainenceData processing systemMeasurement device
The invention discloses a method for automatically and quickly measuring the road structure parameters and a device for realizing the method thereof. A movable platform is provided with a vehicle attitude measuring device which is used for measuring the attitude parameters of the vehicle running on the road surface in real time; and a data processing system processes the attitude data and outputs the road structure parameters. The measuring device comprises a detection vehicle body, an attitude angle detector, a data processing system, a display device and a vehicle positioner; and the data processing system is respectively connected with the attitude angle detector, the display device and the vehicle positioner. The method can promptly discover the road sections where the geometrical parameters of the road surface do not meet the design specifications or design drawings and the harms generated by abnormal change of the road appearance such as settlement of local road section, improper cross slope of the road surface due to deformation of the subgrade, can use the computer to compare the data of all sections with the design value, and automatically screens out the non-conforming items so as to find the unqualified road sections, thus realizing the quick and automatic measurement on the road structure parameters.
Owner:NANJING UNIV OF SCI & TECH
Motor grader cross slope control with articulation compensation
Owner:CATERPILLAR INC
Method of recognizing signal mis-wiring of a three-phase circuit
ActiveUS20080167826A1Accurate wiringElectric connection testingVoltage-current phase anglePower factorSignal analyzer
A signal analyzer for calculating the power consumption and power factor of a three-phase power system driving a motor includes logic that determines whether the analyzer's own input terminals are wired in a proper or inverted manner. To do this, the signal analyzer observes a pattern of zero crossing slope values of the three line-to-line voltages of the three-phase power system and observes a pattern of zero crossing slope values of the current in the three power lines. The analyzer also compares the slope of a voltage signal as the signal passes through zero volts and the sign of a corresponding current signal that exists as the voltage signal crosses zero volts. Based on the observed voltage and current patterns and the voltage-to-current relationships, the analyzer can positively identify which of a plurality of inputs or signal wires are inverted.
Owner:TRANE INT INC
Paving machine for applying varying crown profiles
A paving machine is disclosed. The paving machine may have a screed assembly having a left screed section and a right screed section. The paving machine may also have a crown actuator configured to pivot the left and right screed sections about the centerline. The paving machine may have a crown profile sensor configured to detect the crown profile (DP), and a cross slope sensor configured to detect a cross slope (QNL*, QNR*) of the screed assembly. Further, the paving machine may have a controller configured to determine the crown profile (DP) and a cross slope (QNL*, QNR*) of the screed assembly. The controller may calculate a left cross slope (QNL) of the left screed section and a right cross slope (QNR) of the right screed section based on the determined crown profile (DP) and the determined cross slope (QNL*, QNR*), and display the crown profile on the display device.
Owner:CATERPILLAR PAVING PROD INC +1
Wet and soft soil foundation treatment method
ActiveCN104088208AAccelerated drainage consolidationAccelerated consolidationRoadwaysSoil preservationSoil scienceDynamic compaction
The invention discloses a wet and soft soil foundation treatment method which comprises the steps of 1, backfilling completely within the roadbed width range; 2, before roadbed construction, firstly, removing surface water, and then removing the surface layer salinized soil and surface organic matter of a construction region; 3, backfilling gravel soil within the treatment range, and carrying out primary rolling; after rolling is finished, leveling to form a cross slope; 4, excavating two trapezoid drainage ditches respectively at the two sides of a roadbed; 5, laying a plastic drainage plate; 6, dynamic compaction, compacting by points for twice and fully compacting for once; 7, after dynamic compaction treatment, rearranging the roadbed, and cleaning the overground part of the top of the drainage plate; laying a middle coarse sand cushion layer as a drainage channel, wherein the gradient of the middle coarse sand cushion layer is equal to that of the roadbed; placing a bending part of the plastic drainage plate in the center of the sand cushion layer to enable the bending part to be communicated with the sand cushion layer; 8, backfilling gravel soil onto the middle coarse sand cushion layer; 9, after the roadbed is finished, laying gravel on the surface layer, rolling and compacting.
Owner:JINAN MUNICIPAL ENG DESIGN & RES INSITITUTE GRP
Multi-layered structure and construction method of high embankment near mountains
PendingCN109056439AGuaranteed filling qualityDelay uneven settlementRoadwaysEmbankmentsEngineeringSlope ratio
The invention relates to a multi-layered structure of a high fill roadbed alongside a mountain, comprising a mountain body, a rockfill embankment, a drainage canal, a block stone, a soil-stone mixture, a mountain platform, a platform and a cross slope, wherein the multi-layered structure comprises a mountain body, a rockfill embankment, a drainage canal, a block stone, a soil-stone mixture, a platform and a cross slope. The hill is excavated into a stepped structure, and the hill is provided with a hill platform; The subgrade of Shanao road section in the lower part of the stepped mountain body is filled with a rock-filled embankment, the thickness of the pavement layer of the rock-filled embankment is not more than 60cm, and the filling stones are blocks of different sizes of 20-30cm, andcrevices are left between the blocks; and the rock-filled embankment is filled with the rock-filled embankment. Non-woven geotextiles are laid on the top surface of the rockfill embankment; The rockfill embankment consists of graded slopes with platforms between each grade, and the slope ratio is consistent. An inverted trapezoidal drainage channel is arranged at the bottom of the slope of the rockfill embankment; Earth-rock mixture fills from the top surface of the rockfill embankment to the bottom of the roadbed in stages. The invention has the beneficial effects that the subgrade stratum is filled with a block stone, and can be used as a surface drainage water permeable layer, thus ensuring the smooth drainage of the subgrade after the subgrade is filled, and reducing the influence ofsurface water on the stability of the subgrade during the operation period.
Owner:杭州市交通规划设计研究院有限公司
Real-time traffic signal control method under condition of sight obstruction
InactiveCN101540108AImprove traffic safetyScience of Control PrinciplesControlling traffic signalsGreen timeVehicle detector
The invention relates to a real-time traffic signal control method under condition of sight obstruction, which comprises the following steps: origin and destination of a sight obstruction section of a sight obstruction road are respectively provided with a first signal lamp 3 and a second signal lamp 5 which are oppositely arranged, a first section and a second section which are connected with the origin and the destination of the sight obstruction section are respectively provided with a first vehicle detector 2 and a second vehicle detector 4 which are used for measuring and obtaining the length L of the center line of the sight obstruction section, the maximum arrival factor q max of a vehicle to the detectors, the distance D between the detectors and a stop line, the cornering ratio Mu, the cross slope i of the road surface, the vehicle velocity V0 on the section between the detectors and the stop line, and the radius R of curve of the sight obstruction section of the road or the actual measured running velocity Vl on the sight obstruction section; the minimum green time G min of the sight obstruction section, the green delay time Delta per unit, the maximum green time G max and the curve clearing time Tc of real-time signal control time assignment parameters are respectively calculated; and the obtained real-time signal control time assignment parameters are input into a microprocessor, and are transmitted to the signal lamps through the microprocessor.
Owner:SOUTHEAST UNIV
Inclined flip bucket for spillway or flood discharge hole outlet
The invention discloses an inclined flip bucket for a spillway or a flood discharge hole outlet. The inclined flip bucket consists of a first side wall, a second side wall, and a bottom plate between the two side walls. The bottom plate is provided with a warped surface in a variable cross slope ratio; the first side wall is a straight-side wall; and the second side wall consists of a straight wall segment and a circular arc segment which is tangential to the straight wall segment. The relative positions of the first side wall and the second side wall are that: a starting end part of the first side wall is parallel to the end part of the straight-side wall of the second side wall, and the first side wall and the straight wall segment of the second side wall are arranged in parallel at intervals; and during use, the starting end of the first side wall and the straight wall segment end of the second side wall are inlets of the water flow, and the connecting line of the circular arc segment end part of the second side wall and the tail end part of the first side wall is an edge line of the water flow outlet. The drop point range of the trajectory nappe formed by the inclined flip bucket is positioned in the center of a river channel, and the energy dissipation rate can reach over 80 percent on the premise of matching the energy dissipation of an absorption basin at the downstream.
Owner:SICHUAN UNIV
Construction method for road edge stone sliding mode
InactiveCN103835205AEasy to manufactureLinear smoothPaving gutters/kerbsClimate change adaptationBase courseCross slope
The invention provides a construction method for a road edge stone sliding mode. According to the construction method, a road camber cross slope of a road is 2% and a road edge stone cross slope of the road is 3%. The construction method is characterized by comprising the following steps: a, providing a road edge stone base layer; b, carrying out road edge stone side line setting-out; c, putting a road edge stone sliding mode machine in place; d, mixing concrete and transporting; e, paving; f, paving mortar on the top face of the concrete; g, carrying out artificial smoothing processing; h, curing; and i, cutting lines and filling the lines. The construction method for the road edge stone sliding mode has the advantages that a traditional complicated procedure of pre-fabricating, mounting and transporting road edge stones is saved, the road edge stones are simple to manufacture, the line shape is smooth and beautiful, few joints are formed, the color and luster are the same, the service life of the road edge stones is greatly prolonged, and the maintenance cost is reduced.
Owner:MCC5 GROUP CORP SHANGHAI
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