Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

496 results about "Deep excavation" patented technology

Traffic flow prediction method based on deep learning nerve network structure

The invention discloses a traffic flow prediction method based on a deep learning nerve network structure. Various kinds of traffic flow data are collected, a depth automatic encoder model is utilized for training the collected various kinds of traffic flow data, the depth automatic encoder model is adjusted in the training process, and finally, the adjusted depth automatic encoder model is used for predicting a short-period traffic flow. By adopting the method, deeper excavation analysis is carried out on traffic flow data, so that the short-period prediction of the traffic flow is more accurate, and the performance is better.
Owner:浙江高信技术股份有限公司

Steel shotcrete support internal force self-compensation, displacement control system and control method

InactiveCN101294389AImprove the force deformation performanceControl deformationExcavationsShotcreteAutomatic control
The invention belongs to the building support component technology field including the stress automatic control and monitoring as well as the structural safety, and relates to a steel tube supporting internal force automatic compensating and displacement controlling system. The system comprises an upper system, a PLC control system module and a field executive system. A steel support is arranged on a reinforced concrete diaphragm wall, a hydraulic jack is arranged on the steel support, and real time pressure monitoring values are fed back through a pressure sensor. The steel support and the hydraulic jack form a pre-stressed steel support structure, the hydraulic jack is connected with a hydraulic pump station through an oil circuit, and is connected with the PLC control system module through the pressure sensor, the hydraulic pump station is connected with the PLC control system module, and a PLC controlling device is connected with the upper system. Through auto-control software and a PLC control system, the automatic control to the axial force of the steel support is realized, thereby controlling the displacement and the settlement of the deep excavation supporting structure and the adjacent basic facilities.
Owner:CSCEC INT CONSTR +1

Microclimate disaster early warning method and system based on microclimate and satellite remote sensing data

The invention relates to a microclimate disaster early warning method and system based on microclimate and satellite remote sensing data, and belongs to the field of meteorological disaster early warning of an electrical power system. The microclimate disaster early warning method and system are characterized in that the satellite remote sensing technology is applied to power grid meteorological disaster monitoring, and combined application of macrometeorology and microclimate is achieved. Meteorological data in a ground observation database and satellite remote sensing observation data in a satellite remote sensing observation database are transmitted to an early warning platform server through a GSM network. Deep excavation on the observed data is carried out through analytical procedures, statistical information including the maximum value, the minimum value, the average valve and the like within any historical time period are settled, and specific information of the monitoring points is visually described for a user in the mode of graphs, curves and the like. The influence scope of the disaster weather are judged according to the disaster gradation standard,, power grid facilities influenced by the disaster weather are accurately positioned, and data supports and decision supports are provided for disaster prevention, disaster resistance and disaster reducing of power grids.
Owner:STATE GRID CORP OF CHINA +2

AFC data-based public transport passenger flow OD real-time estimation method

InactiveCN105046350AImprove accuracyRealize real-time optimization of operation schedulingForecastingDistribution lawDeep excavation
The invention discloses an AFC data-based public transport passenger flow OD real-time estimation method. The method utilizes card swiping data of a public transport AFC system, performs sorting to obtain bus station passenger flow, on this basis excavates a mapping relation between public transport passenger flow OD and the bus station passenger flow, and builds a public transport passenger flow OD real-time estimation model based on Kalman filtering, thereby realizing real-time estimation of the public transport passenger flow OD. The AFC data-based public transport passenger flow OD real-time estimation method provided by the invention performs deep excavation on passenger flow data of the public transport AFC system, and obtains an optimal estimation value of a public transport passenger flow distribution probability through the Kalman filtering model, thereby realizing real-time estimation of the public transport passenger flow OD, which is of great importance to accurately describing the public transport passenger flow demand distribution law and realizing real-time optimization of bus route operation dispatching.
Owner:SOUTHEAST UNIV

Multi-service system information fusion power grid comprehensive visualization method based on three-dimensional GIS

InactiveCN104240139AIntelligent Visual MonitoringRich Visual MonitoringData processing applicationsFusion powerSmart grid
The invention discloses a multi-service system information fusion power grid comprehensive visualization method based on the three-dimensional GIS. On the basis of comprehensively carding and analyzing all link service processes and data models of an intelligent power grid, related running and managing information in a production control system and a management information system is obtained through a distribution automation master station mirror image synchronous database server, wherein scheduling system data are obtained through an IEB information exchange bus crossing the production control region and the management information region. According to the method, by carding all the link service processes and the data models of the intelligent power grid and conducting deep excavation, analysis and comprehensive display on data on this basis, production running and managing personnel can be helped to more comprehensively, visually and effectively master the real-time running state of the power gird through a more intelligent and abundant power grid visualization monitoring, warning and analyzing method, and therefore intelligent auxiliary support is achieved when enterprise running and managing decisions are made.
Owner:STATE GRID CORP OF CHINA +2

Administrative user abnormal behavior detection method based on big data log analysis

InactiveCN104239197AHigh efficiency of log analysis and processingPracticalHardware monitoringSpecial data processing applicationsAnomalous behaviorService module
The invention discloses an administrative user abnormal behavior detection method based on big data log analysis. The administrative user abnormal behavior detection method is implemented thorough an interface module, a preprocessing module, an analysis module, a configuration module, a service module, a visualization module and a knowledge base. Log data enter the preprocessing module through the interface module, are preprocessed by the preprocessing module and then are analyzed through the analysis module; finally, the log data enter the service module and then are displayed on the visualization module. Compared with the prior art, the administrative user abnormal behavior detection method based on big data log analysis has the advantages that a big data processing framework is used for deep excavation and analysis of administrative logs of information system internal administrative staff, abnormal behaviors of the administrative staff are found, in other words, abnormal behaviors and violation operations of the administrative staff are found, abnormality sources are traced, security of the log data is guaranteed, and practicability is high.
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD

Construction method of foundation pit earthwork

The invention relates to a construction method of foundation pit earthwork. When a construction site is small, steel lattice column support posts under intermediate trestle area support beams are intensive, the foundation pit has deep excavation, a vehicle ramp does not have enough horizontal length, an earthmoving vehicle can not go down to the pit bottom, and earthwork excavation construction is substantially difficult, excavation is carried out by heaping a soil island in the process of excavating a third layer and a fourth layer of the earthwork, a subgrade plate is inserted in both sides of center supports to retain earth, the soil island is heaped, the earthwork is excavated by way of the soil island by a long arm digging machine docked on a trestle. The method of the invention has the advantages of greatly improved excavation efficiency, shortened construction period, and obvious actual effect. The method is a preferred construction method of carrying out earthwork construction in an intensive support area of deep foundation pit steel lattice column.
Owner:ZHEJIANG CONSTR ENG GRP CO LTD

Construction method for deep-foundation pit excavation

ActiveCN102535474AAdvantages of construction methodReasonable designExcavationsEconomic benefitsStructural engineering
The invention relates to a construction method for deep-foundation pit excavation. After foundation pit fender structure construction is finished, an excavation machine is used for excavating and an earthwork vehicle is used for transporting out the earthwork. The construction method is characterized by comprising the following steps of: a. earthwork excavation for the first time: uniformly excavating from every corner of the foundation pit to the center by dividing three regions in a retreating manner; b. fender supporting structure construction and maintenance: pouring the fender supporting structure, and carrying out next-step construction when the supporting concrete strength achieves 80% of the design strength; and c. earthwork excavation for the second time: carrying out earthwork excavation below the fender supporting structure, selecting excavation equipment, excavating, and transporting out the earthwork in the pit in a two-stage overturning and transferring manner to finish excavation. The construction method for deep-foundation pit excavation has the advantages of being reasonable in construction step design, simple to operate and safe and reliable in excavating engineering, lowering engineering construction cost, saving construction period, and being obvious in economic benefit.
Owner:MCC5 GROUP CORP SHANGHAI

Testing device and testing method for rock cracked through coupling of dynamic static load and water pressure

The invention discloses a testing device and a testing method for rock cracked through coupling of dynamic static load and water pressure. The testing device comprises a Hopkinson pressure rod device and a manual pressure pump. The Hopkinson pressure rod device comprises a high-pressure air tank, a punch, an incident rod, a data collecting processing system, an extension rod and an axial static pressure loading device. A testing piece and a water pressure loading pressure head are arranged between the incident rod and the extension rod, and the manual pressure pump with a pressure meter is connected with the water pressure loading pressure head through a sleeve. The method includes that first, axial static pressure is exerted on the testing piece through the axial static pressure loading device, then water pressure is exerted on the testing piece and adjusted to a preset value through the manual pressure pump with the pressure meter, the high-pressure air tank drives the punch to impact the incident rod, and finally collected data is processed. The testing device and the testing method achieve testing of dynamic mechanics characteristics of the rock in a laboratory under the condition of the coupling of water pressure seepage and dynamic and static stress and can better simulate deep excavation conditions.
Owner:HUNAN UNIV OF SCI & TECH

Deep foundation pit combination retaining and protecting construction method for geology with high water level and large particle size sand gravel

The invention discloses a deep foundation pit combination supporting construction method for geology with high water level and large particle size sand gravel. High pressure jet grouting pile construction is conducted outside a foundation ditch retaining and protecting system, by means of a triple placing method, cement paste is injected into underground soil filling layer and sand gravel gaps, after solidifying, secant pile wall and retention wall are formed, the underground water is prevented outside the periphery the foundation ditch retaining and protecting system, and conditions are created for the construction of a support pile; when the strength of outer side jet grouting pile meets design requirements, a long auger drilling cast-in place pile begin to be constructed close to the inner side of the jet grouting pile; after perfusion pile beings maintained for 15 days, jet grouting pile construction begins to conduct to make up partial failure of waterproof curtain of the jet grouting pile in construction of retaining and protecting pile, and retaining and protecting strength and water interception effect of the retaining and protecting system are increased; at last, in an earth excavation process, bar-mat reinforcement sprayed concrete slope protection and construction of dewatering well, open trench and water-collecting well in the foundation ditch are completed well, multiple retaining and protecting forms are used for combining construction and interaction. Accordingly, the problems of retaining and protecting the geology with high water level and large particle size sand gravel and processing the geology are solved.
Owner:HEFEI CONSTR ENG GRP

Construction method optimizing deep foundation pit changing supporting construction sequences

The invention relates to a construction method optimizing deep foundation pit changing supporting construction sequences. Top-down method sequence construction is adopted, and a supporting structural system of a foundation pit is formed by a drill hole potting supporting pile and a waterproof curtain. When foundation pit grooving is carried out, an original soil layer below a changing supporting structure is reserved, after the foundation pit grooving and construction of foundation brick dies are completed, the changing supporting structure and a cushion layer are poured simultaneously, the changing supporting structure and the foundation brick dies are utilized at the same time to serve as a bottom plate outer die, pouring of a foundation mat is carried out when waterproof construction is finished, and an upper part horizontal supporting structure can be dismantled when both strength of the changing supporting structure and strength of concrete of the foundation mat reach strength when the horizontal supporting structure can be dismantled. The construction method optimizing the deep foundation pit changing supporting construction sequences has the advantages of eliminating cleaning of sundries and back-fill consolidation soil operation construction, shortening a construction period, and reducing risks of the foundation pit.
Owner:TIANJIN SANJIAN CONSTR ENG

Method for deep excavation pit combination support construction close to subway station

The invention discloses a method for deep excavation pit combination support construction close to a subway station. The method is safe, reliable, short in construction period and low in construction cost and comprises the following steps that (1) two rows of reinforced concrete cast-in-place concrete piles are arranged at the outer side of an underground structure of an entrance and an exit of the subway station for blocking soil; (2) a single row of reinforced concrete cast-in-place concrete piles are arranged at the inner side of the underground structure of the exit and the entrance of the subway station; (3) coupling beams at the top of the reinforced concrete cast-in-plate concrete piles are constructed; and (4) when each coupling beam reaches to strength, earth excavation to a deep excavation pit is performed and in the process of excavation, a plurality of rows of steel tube inner supports are arranged transversally from top to bottom between the single row of reinforced concrete cast-in-place concrete piles and the deep excavation pit and meanwhile and meanwhile, soil nailing wall reinforce is adopted to the bottom of the underground structure of the exit and the entrance of the subway station in a matched mode until the earth excavation is performed to the bottom of the deep excavation pit.
Owner:LONGXIN CONSTR GRP

Device and method for vertically transporting earthwork by reverse construction method

The invention relates to a device and a method for vertically transporting earthwork by a reverse construction method, which belong to the field of civil construction. In the device, segmental belt-type conveyor belts are adopted as earthwork transporting tools in a deep foundation pit; the conveyor belts pass through reserved holes of floor slabs on each floor; and the earthwork is transported to a dump truck obliquely from the bottom to the top by the conveyor belts. The device is formed by connecting independently segmented and obliquely arranged belt-type conveyor belts end to end; and each floor is provided with at least one conveyor belt which consists of an electric motor, a conveyor belt rack, an unloading tank, a scraping plate, a roller wheel, a roller wheel shaft bracket, a belt, a feeding funnel and an emergency brake device. The device and the method for vertically transporting the earthwork by the reverse construction method can effectively increase the earth volume in single vertical transport, effectively improve excavation efficiency, reduce excavation machines, reduce excavation cost, and simultaneously, reduce the influence of the construction of underground excavation on the simultaneous construction of an upper structure to the minimum.
Owner:CHINA CONSTR FIRST BUILDING GRP CORP LTD +2

Method for plugging relief well of deep foundation pit

ActiveCN103526766ASuccessfully blockedGood plugging qualityFoundation engineeringWater volumeRelief well
The invention discloses a method for plugging a relief well of a deep foundation pit. The method comprises the following steps of (1) necessary preparation before relief well plugging; (2) plugging construction on the relief well, wherein after base plate construction is completed, a body structure meets anti-floating requirements, and a fixed water level in a relief well in the foundation pit is located 2-3m below a foundation pit face, the plugging construction on the relief well can be carried out, the relief well in a working state is firstly plugged in an interval mode due to a large water yield, after the relief well is partially plugged, the working state of the relief well which is not plugged continues to be observed and comprises the water yield condition, the variation value of the water level, the fixed water level elevation and the water pump position elevation, the rest of the relief well continues to be plugged in an interval mode, and time is earned for well plugging by increasing pump output. The method has the advantages that the relief well can be successfully plugged when underwater pressure or water inflow is large, plugging quality is good, construction cost is lowered, and the method is worthy of popularization and application.
Owner:THE THIRD CONSTR OF CHINA CONSTR EIGHTH ENG BUREAU

Shallowly-growing directional cultivation method for Chinese yam

The invention discloses a shallowly-growing directional cultivation method for Chinese yam, which belongs to the technical field of Chinese yam planting. The cultivation method comprises the following steps of: treating potato seeds, preparing soil, placing in a shallowly-growing groove and a matrix, applying a base fertilizer, planting, and carrying out field management and pest control. According to the cultivation method disclosed by the invention, the problems of need of deep groove planting and deep excavation recovery, labour and time waste, and extreme liability to damage tubers of the traditional Chinese yam planting technology are solved; by applying a shallowly-growing directional cultivation technology for Chinese yam, deep excavation is avoided during planting, Chinese yam is plant in the previously transversally-buried shallowly-growing groove, and surface soil is pushed aside only by a simple tool or by both hands during recovery. The method has the characteristics of being wide in suitable soil range, fast in tuberization, and easy to harvest, and is capable of achieving the purposes of high yield, high quality and high efficiency of Chinese yam cultivation.
Owner:陈秋

Loess high fill in hill removing and gully filling projects and construction method of loess high fill

The invention discloses loess high fill in hill removing and gully filling projects and a construction method of the loess high fill, and relates to the technical field of high fill processing. The loess high fill and the construction method are used for solving the problem that in the prior art, because of high fill deep excavation, saturated yielding is caused and finally differential settlement of foundations and side slope deformation damage are caused. The loess high fill in the hill removing and gully filling projects is sequentially composed of a lime pile composite foundation layer, a rubble water drainage layer and a loess layer from bottom to top. By means of the loess high fill in hill removing and gully filling projects and the construction method of the loess high fill, the compression strength, tensile strength and shear strength of the whole loess high fill are improved, and the anti-seismic and anti-shock performance of the loess high fill are enhanced; and by laying and combining a composite geomembrane, a rubble layer and a three-dimensional composite water drainage net, water drainage channels inside the high fill are formed, and the phenomenon that because of high fill deep excavation, saturated yielding is caused and finally differential settlement of the foundations and side slope deformation damage are caused is effectively eliminated.
Owner:NORTHWEST UNIV(CN)

Deformation estimation method for deep foundation pit support structure in soft soil strata

The invention provides a deformation estimation method for a deep foundation pit support structure in soft soil strata. The method comprises steps as follows: firstly, according to fitting analysis for a measured curve of support structure deformation caused by excavation of a large quantity of deep foundation pits in the soft soil strata, a concept of strata loss theory is introduced, and a deformation calculation model for the deep foundation pit support structure in the soft soil strata is constructed; by reference to thoughts of a shield tunnel surface subsidence Peck formula, a Schmidt formula and a triangular subsidence formula, an area of a support structure deformation enveloping curve can be obtained through an area of an enveloping curve of surface subsidence behind a wall, and an area B of the enveloping curve of surface subsidence behind the wall is calculated; a deformation estimation calculation formula for the deep foundation pit support structure in the soft soil strata is derived out according to the former formulae; finally, values of parameters are substituted into the deformation estimation calculation formula for the deep foundation pit support structure in the soft soil strata, and a deformation value of any point of the support structure can be calculated. A fitting curve of deformation of the support structure is highly fitted with a measured result curve by adopting a Gaussian function, and the effect is good.
Owner:广西建工第五建筑工程集团有限公司

Fuzzy neural network model and intelligent prediction method for deep excavation deformation

InactiveCN103116804ATroubleshoot input dependenciesGood explanatory abilityFuzzy logic based systemsNeural learning methodsFuzzy inferenceDefuzzification
The invention discloses a fuzzy neural network model based on a multivariable phase-space reconstruction theory and an intelligent prediction method for deep excavation deformation by using the fuzzy neural network model. The fuzzy neural network model consists of four functional modules including a fuzzification interface, a fuzzy rule knowledge base, a fuzzy inference machine and a defuzzification device. The prediction model and the prediction method have high accuracy, and can effectively avoid major losses of countries and people's lives and properties.
Owner:SUZHOU UNIV OF SCI & TECH

Adaptive dynamics coordination control method of space manipulator

The present invention relates to an adaptive dynamics coordination control method of a space manipulator. On the basis of deep analysis of space manipulator system kinematics and dynamics characteristics, a typical space manipulator kinematical equation is subjected to augmenting, and a space manipulator 'extended kinematics equation' capable of description of the tail end motion of the space manipulator and the attitude motion of a spacecraft is obtained; and on the basis of deep excavation of the space manipulator system kinetic equation and angular momentum conservation equation characteristics, a spacecraft reference speed and a joint space reference speed are respectively defined, and a space manipulator adaptive dynamics coordination controller is designed on this basis. The adaptive dynamics coordination control method between the space manipulator and a pedestal spacecraft can control the motion of the space manipulator to reach the purpose of space manipulator tail end locus tracking and pedestal spacecraft attitude regulation at the same time in the condition that system parameters have nondeterminacy.
Owner:BEIJING INST OF CONTROL ENG

Key IP address safety alarm association analysis method based on fuzzy scene

InactiveCN105471623ASolve expert knowledge buildingSolve the problem of difficult knowledge updateData switching networksIp addressAnalysis method
The invention discloses a key IP address safety alarm association analysis method based on a fuzzy scene. The method comprises the steps of: firstly, utilizing a statistic method to aggregate alarms, then utilizing a strategy to neglecting and filtering the alarms, finally utilizing an association analysis algorithm based on the fuzzy scene to calculate an event suspected degree corresponding to a source IP, and utilizing a big data analysis method to carry out statistic querying on alarm logs related to a suspected IP. According to the invention, the concept of fuzzy scene is innovatively provided, and a conventional analysis mode by constructing an attack scene is broken through, wherein the association analysis mode of the fuzzy scene is characterized in that deep excavation and association analysis are carried out on a large number of related safety alarm events with the IP address serving as the core. Related factors of the alarms, which may influence the IP safety, are analyzed, the factors are analyzed in an integrated manner, and a suspected degree value reflecting the safety condition of the IP is obtained by an event suspected degree calculation formula.
Owner:中国烟草总公司江苏省公司

Narrow site deep foundation pit excavation supporting construction method

The invention relates to a narrow site deep foundation pit excavation supporting construction method, and belongs to the field of building construction. The construction method includes the following contents that the depth of a foundation pit is 12.1 m; the depth of underground water in a the foundation pit is 30 m; the depth of underground water outside the foundation pit is 30 m; and the coefficient for importance of a supporting structure is 1.0. The construction method comprises the steps that (1) a soil nailing and anchor spraying method is adopted for slope supporting of the foundation pit; (2) a support pile and anchor cable method is adopted for non-sloping space supporting of a forwarding station and a gallery; and (3) the support pile and anchor cable method is adopted for foundation pit supporting. According to the narrow site deep foundation pit excavation supporting construction method, it is guaranteed that surface water outside the foundation pit does not flow into the foundation pit, accumulated water inside the foundation pit and on a slope face is drained out of the foundation pit in time, and stagnantblocked water on a shallow layer of the side wall of the foundation pit can be smoothly drained out; and a retention wall is arranged on the periphery of the foundation pit, it is guaranteed that rainwater cannot wash the slope, and it is guaranteed that the accumulated water can be drained out in time.
Owner:CHINA CHEM ENG SECOND CONSTR

Vineyard soil improvement method for slope barren land of hilly and mountainous area

The invention provides a vineyard soil improvement method for a slope barren land of a hilly and mountainous area. The vineyard soil improvement method comprises the following steps: b, carrying out surface soil stripping on a target slope barren land to be improved according to a set thickness; carrying out interval type deep excavation on the stripped region; removing raw soil, parent materials or rock layers under surface soil to form field planting ditches along a gradient direction; c, injecting fertile soil into the field planting ditches and enabling the injected fertile soil to be higher the ground surface with surface oil not stripped to form a planting band. According to the vineyard soil improvement method, on the one hand, the work amount in a soil improvement process can be greatly reduced and the improvement cost is reduced; on the other hand, the fertile soil is backfilled to realize soil collection and fertilizing improvement; a curing process of the soil can be accelerated and the soil quality of the slope barren land can be improved; a vineyard can be constructed within a short time and the economic effect is rapid to obtain.
Owner:SOUTHWEST UNIVERSITY

Ultra-deep excavation centrifuge model test simulation apparatus and testing method thereof

The invention relates to an ultra-deep excavation centrifuge model test simulation apparatus and a testing method thereof. The apparatus is composed of an excavation driving part and an excavation model part, and the structure of the excavation driving part is characterized in that a supporting plate is fixed to the top of a model box, and an elevating motor driven through a speed reducer by a large power single-phase motor and a linear bearing are fixed to the supporting plate; the structure of the excavation model part is characterized in that a guide rod traverses through the linear bearing and can freely vertically move in the linear bearing; the upper end of the guide rod is provided with a lifting beam; a load sensor is fixed to the lower surface of the lifting beam; and a lifting model is fixed to the lower end of the guide rod. The apparatus can normally run under the high gravitational field of a centrifuge, has the advantages of simulation of large excavation depth and excavation amount, excavation mode control and transformation convenience, benefiting for the arrangement of a geotechnical centrifuge model, very safe operation and precise control, and can simulate various types of excavation engineering (or filling engineering).
Owner:NANJING HYDRAULIC RES INST

Prefabricated concrete assembled foundation

The invention relates to a prefabricated concrete assembled foundation, which comprises at least one prefabricated core concrete block and at least one prefabricated splicing concrete block. Fixing components which are used for fixing an iron tower are embedded in the core concrete block. Each of the core concrete block and the splicing concrete block is provided with first through holes which extend along a first direction, and second through holes which extend along a second direction. The prefabricated concrete assembled foundation additionally comprises prestressed reinforcement components. Each prestressed reinforcement component comprises prestressed reinforcement. The prestressed reinforcement penetrates through the first through holes or the second through holes of the core concrete block and the splicing concrete block to fix the core concrete block and the splicing concrete block together. By assembling the prefabricated concrete blocks to form the prefabricated concrete assembled foundation, the prefabricated concrete assembled foundation is only required to be installed on the firm ground, deep excavation is not required, the weight of a single concrete block is light, the generality is good, the manual handling is facilitated and the operation in mountainous areas or roofs is facilitated.
Owner:湖北日海通讯技术有限公司

Three-dimensional digital prewarning method and facility for remote intelligent monitoring of deep foundation pit deformation stability

According to the invention, a three-dimensional numerical model of deep foundation pit excavation deformation stability in a construction area is established on the basis of the physical and mechanical parameters of deep foundation pit rock soil, hydrological engineering geologic conditions of deep foundation pit regions and FLAC3D technology, and a three-dimensional visual safety pre-warning platform of deep foundation pit stability is built based on VTK business software systems. The real-time monitoring data of horizontal displacement of guard piles, horizontal displacement of crown girders and bump deformation at the bottom of foundation pits are collected through a full-section laser scanner and transferred to a remote monitoring and data processing host machine. The three-dimensional numerical model of deep foundation pit excavation deformation stability performs model parameter correction by use of the data of initial digit groups and compares the subsequent measured data with the model parameter threshold values, and the three-dimensional visual safety pre-warning platform of deep foundation pit stability shows the comparison results and provides pre-warning of safety levels of the over-warning parameters. All the pre-warning messages are sent to mobile phones of relevant personnel and also fed back to audible and visual alarms which are mounted on the working plane of the construction area to give sound and light alarms.
Owner:CHINA RAILWAY 21TH BUREAU GROUP

Deep foundation pit dynamic construction real-time monitoring and early warning system and using method

ActiveCN111877418AHigh precisionImprove the shortcomings of not being precise enoughFoundation testingTerrainEarly warning system
The invention discloses a deep foundation pit dynamic construction real-time monitoring and early warning system and a use method. The system comprise a pre-processing end, a cloud processing platformand a post-processing end, the pre-processing end, the cloud processing platform and the post-processing end are connected in sequence, the pre-processing end is used for collecting foundation pit dynamic construction data and achieving information interaction through 5G transmission, the cloud processing platform integrates a pre-processing end sensor module and a three-dimensional information acquisition module to upload data, constructs a DEM comprehensive terrain grid, imports stratum information, carries out foundation pit excavation through a built-in rock-soil simulation module, and realizes slope and foundation pit instability simulation prediction. A four-dimensional live-action chromatic aberration graph with a time sequence is generated in combination with a BIM foundation pitthree-dimensional model, a rock-soil simulation three-dimensional model and feature point data, and finally, the four-dimensional live-action chromatic aberration graph is displayed on a mobile phoneand a computer through a post-processing end, so that visualization and collaboration of construction information are realized.
Owner:NORTHEASTERN UNIV

High-pressure-bearing square deep foundation pit applicable to water-rich sand gravel stratum and excavation method of high-pressure-bearing square deep foundation pit

ActiveCN107119691ASolve the problem that the excavation cannot be dewatered and drainedSolve the problem that excavation is feasible but has many defectsProtective foundationExcavationsReinforced concreteRebar
The invention discloses a high-pressure-bearing square deep foundation pit applicable to a water-rich sand gravel stratum and an excavation method of the high-pressure-bearing square deep foundation pit. The foundation pit comprises a dewatering excavation area on the upper portion of the foundation pit and a water entrainment excavation area on the lower portion of the foundation pit. A dewatering well is arranged in the dewatering excavation area. A pit external groove sidewall reinforcing device and a pit internal groove sidewall reinforcing device are arranged inside and outside a diaphragm wall of the whole dewatering excavation area correspondingly. The whole dewatering excavation area is further provided with at least two reinforced concrete waist supporting beams and reinforced concrete supports. The water entrainment excavation area is provided with muddy water sucking equipment and filtered water recharge equipment, and multiple stages of settling ponds are arranged outside the foundation pit correspondingly. The stepped excavation method that the reinforced concrete supports are arranged and unwatering excavation is adopted on the upper portion and water entrainment excavation is adopted on the lower portion is adopted. The construction quality of the diaphragm wall is effectively ensured, the probability that water seepage, water burst and sand burst appear in the diaphragm wall is lowered, the excavation safety of the foundation pit is ensured, the excavation schedule of the foundation pit is accelerated, and the excavation cost of the foundation pit is reduced.
Owner:中交(南京)建设有限公司

Space power load prediction method based on load density coordination coefficient

The invention brings forward a space power load prediction method based on a load density coordination coefficient. The method is characterized by comprising the steps of generating cells, determining classification load density coordination coefficients, solving classification load density indexes and establishing a model. Through introducing a new coordination coefficient calculation method, different load densities of the same kind of loads in the different cells and the development trend of the load density coordination coefficient of the same cell can be better demonstrated, and the problem of nonuniform distribution of the same kind of loads in the different cells can be overcome. According to the invention, deep excavation of historical load data is realized according to constraint relations between actually measured cell historical loads and power supply areas, land information and classification load densities, and the load on each unit area is predicted under specific power load space resolution. The method provided by the invention has the advantages of being scientific and reasonable and being easy and simple to implement, accuracy in prediction and high in adaptability, thereby being suitable for city space load prediction.
Owner:STATE GRID CORP OF CHINA +2

Method and system for remote intelligent monitoring and three-dimensional digital early warning of deep foundation pit bottom surface upheavals

The invention provides a method and system for remote intelligent monitoring and three-dimensional digital early warning of deep foundation pit bottom surface upheavals. A construction region deep foundation pit deformation stability three-dimensional numerical model is built based on deep foundation pit rock and earth mass physical and mechanics parameters, deep foundation pit region hydrogeological and engineering geological conditions and an FLAC3D technology. A deep foundation pit bottom surface upheaval deformation three-dimensional visualized safety early warning platform is built based on a VTK business software system. Foundation pit bottom surface upheaval deformation real-time monitoring data are acquired through a hydrostatic balance level and transferred to a remote monitoring and data processing machine, initial groups of data are utilized to finish parameter modification of the deep foundation pit deformation stability three-dimensional numerical model, follow-up real-time data and model parameter threshold values are compared, and the deep foundation pit bottom surface upheaval deformation three-dimensional visualized safety early warning platform shows and perform grading safety early warning to alert-exceeding parameters. All of early warning information is sent to mobile phones of relevant persons, and accordingly the remote intelligent monitoring and the three-dimensional digital early warning of the deep foundation pit bottom surface upheavals are finished.
Owner:CHINA RAILWAY 21TH BUREAU GROUP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products