38results about How to "Small project scale" patented technology

The invention provides a kind of underground digging and adding floor construction method. It makes use of the underground space as construction field, and makes the roof of present structure as natural cover board, so it divides the whole underground structure into several building sections to underground dig step by step and complete the floor addition of the underground structure. It don't need to dig widely, won't affect the normal ground traffic, and don't need to move pipelines. The project is small and can save investment. It's especially adopted to building underground to add floor in the center of the city. It's suitable for underground digging to rebuild the one floor cellar into two floor underground structure.

The invention discloses a micro-grid system of a grid-connected island power grid. The system comprises an energy storage system, a power distribution network load system, a diesel power generating system, a wind driven generator system, an optical fiber communication network, and a micro-grid energy coordinated optimization and control system. The energy storage system accesses an AC bus of an island power grid through a boosting transformer. The power distribution network load system makes user load ends connected with a power distribution network load transformer through fast solid-state switches. The diesel power generating system is used as a main power supply when the micro-grid system is in isolated island operation. The wind driven generator system comprises an asynchronous wind generating set. The stator output sides of the asynchronous wind generating set are connected in series with back-to-back converters. The output of the back-to-back converters is transmitted to the AC bus of the island power grid through boosting. In the island power grid, optical fibers are set up along a power transmission and distribution line, and optical fiber communication transmitter-receiver devices are installed on power supply points, load points, and control terminals, so as to form the optical fiber communication network of the island power grid. The micro-grid energy coordinated optimization and control system collects island power grid operation data in real time through the optical fiber communication network, and releases control instructions.

The invention discloses a ground anchor type single-tower cable-stayed bridge structure. The ground anchor type single-tower cable-stayed bridge structure consists of a base, a cushion cap, a bridge tower, a main span stay cable, a main beam, an anchoring stay cable and an anchorage; the bridge tower is positioned on one side of the main beam and is balanced by the main span stay cable and the anchoring stay cable; one end of the main span stay cable is anchored on a main tower and the other end of the main span stay cable is anchored on the main beam; the main beam is hung by the main span stay cable; one end of the anchoring stay cable is anchored on the main tower and the other end of the anchoring stay cable is anchored on a ground anchor; the main beam on the side of the bridge tower is consolidated with the bridge tower or the cushion cap or the base, and the other side is supported on a transition pier through a support; and the bridge tower is positioned on one side of the main beam and is arranged vertically or in a retroverted way. By adoption of the structure, the conventional cable-stayed bridge span can be cancelled, so the project is economic; and the axial pressure of the main beam is transmitted to the base, the pile base inclining sidesway or front and back is adopted, the stability of a bank slope at the position of the bridge tower can be improved, and the bridge tower is arranged towards a canyon side, so that the span is reduced and the project scale is reduced.

The invention provides an independent pressurized air supply system for tunnel transverse galleries and an air supply method. The independent pressurized air supply system comprises a fire detection system, a PLC controller and pressurized air supply units corresponding to various tunnel transverse galleries, wherein the PLC controller is connected with the fire detection system and the pressurized air supply units separately. The independent pressurized air supply system has the advantages that the thought that the adjacent galleries of a highway are security areas for each other is reflected in a ventilation and smoke control device; non-accident tunnel wind pickup is achieved in a fire, so that pressurized air supply is carried out on the tunnel transverse galleries, positive pressure of the tunnel transverse galleries on an accident tunnel is ensured, pressurized air supply of the tunnel transverse galleries is achieved and smoke is prevented from entering the tunnel transverse galleries from the accident tunnel. Meanwhile, an air curtain can be further formed on a security door through an air valve to prevent the smoke from entering the tunnel transverse galleries from the accident tunnel, therefore, a security guarantee is provided for personnel evacuation and rescue. The system is combined with engineering practice of a highway tunnel, so that the pressurized air supply device is simplified, and the independent pressurized air supply system is flexible in arrangement, small in engineering scale and high in engineering implementation.

The invention discloses a drainage test system by low-path embankment and a method thereof, which belong to the technical field for testing the low-path embankment drainage effect of fine grained soils on highways. The invention has the structure that a non-watertight glass tube is connected between an organic glass model casing and the bottom of a graduated water tank. The invention adopts the principle that the water level of the water tank is used for imitating the rising and falling of the underground water level, and that waterproof and drainage facilities paved in the model grooves and embankments filled in by layer are used for imitating the working condition of water-proof and drainage materials in actual projects. The invention can intuitively obtain the change laws of the water content, pore water pressure and suction of low-path embankments before and after paving various waterproof and drainage materials, thereby testing the usage effect of various waterproof and drainage facilities. The invention also has the advantages of good approximation to actual projects, reasonable scale, imitable working condition, and the like, which ensures the design and construction of low-path embankment drainage scientifically and technically.

The invention provides a station-front turning-back island-type station arrangement structure of urban rail transit. A first main line and a second main line are arranged on the two sides of an island-type platform correspondingly; a first curve is connected with the first main line and a scissors crossover, and a second curve is connected with the second main line and the scissors crossover; anda first interval main line and a second interval main line are connected through the scissors crossover. According to the station-front turning-back island-type station arrangement structure of the urban rail transit, the total length of a station is shortened effectively, and the project scale is reduced; the travelling distance of train turning-back operation is shortened, and the efficiency ofthe train turning-back operation is improved; and applicability is wide, flexibility is high, arrangement structures of overhead stations and underground stations can be met, and the island-type station arrangement structure is suitable for the multiple platform widths.

The invention discloses a partial cable-stayed bridge of a fish bone beam structure. The partial cable-stayed bridge of the fish bone beam structure comprises a main beam, a plurality of bridge towers and stayed cables, wherein anchoring ends or saddle areas of the bridge towers are arranged on the main beam, the stayed cables are arranged between the main beams and the bridge towers, part of stayed cables further comprise multiple vertical walls corresponding to the bridge towers one to one, the vertical walls are fish bone walls, the main beam is an equal-altitude box type bridge panel, columns of the bridge towers are embedded in the corresponding fish bone walls, and the tops of the columns of the bridge towers extend out of the fish bone walls. One end of each stayed cable is tensioned and anchored on the main beam, and the other ends of the stayed cables are anchored at the tops of the bridge towers or continuously pass through the saddle areas. The partial cable-stayed bridge of the fish bone beam structure has all the advantages of a traditional cable-stayed bridge. The structural rigidity of a bridge body is high, the stress of the bridge towers is more reasonable, the fish bone walls have the function of the bridge towers, the section is larger, and the bending performance is better.

The invention discloses a suspension bridge anchorage and a construction method of the suspension bridge anchorage, and relates to the technical field of suspension bridge anchorage design and construction. The device comprises an obliquely-arranged pilot tunnel, a first anchor chamber and a second anchor chamber. The length of the pilot tunnel is configured such that the thickness of a rock stratum on the side below the terminal end of the pilot tunnel is not less than a preset thickness, the first anchor chamber is arranged below the pilot tunnel and communicates with the terminal end of thepilot tunnel, a steering piece is arranged in the first anchor chamber, and the steering piece is positioned at the rock stratum with the thickness not less than the preset thickness; and the secondanchor chamber is vertically arranged below the first anchor chamber and communicates with the first anchor chamber, the second anchor chamber is filled with an anchor block, and a fixing assembly isembedded in the anchor block. The suspension bridge anchorage and the construction method of the suspension bridge anchorage integrate the structural advantages of a tunnel anchor and a gravity anchorsimultaneously, and are suitable for steep slopes and rock mass broken sections.

The invention discloses a method for improving the straw methane yield through straw pretreatment. According to the method, ammonia water and water are mixed and are uniformly sprayed onto straws placed in a sealed bag so that the straws are in a wet soaking state, and the pretreatment is carried out for 90 hours to 110 hours under the normal temperature condition. The pretreatment effect is improved through regulating different moisture contents in the wet type soaking state, and in addition, the methane content in the methane is obviously improved in the anaerobic fermentation process. Results show that the straws pretreated under the condition of 60 to 90 percent of moisture content at the normal temperature can fast enter the methane production peak period, and in addition, the anaerobic fermentation period is effectively shortened. When the pure ammonia concentration is 2 to 6 percent, when the moisture content is 60 to 90 percent, T80 is shortened by 23.23 to 50.1 percent, 9.30 to 50.1 percent and 9.30 to 25.5 percent through being compared with that of 43 days without the treatment. When the result is applied to the practical engineering, the engineering scale can be reduced by one time, and the investment cost is greatly reduced. Meanwhile, through being compared with that of straws which are not pretreated, the unit VS methane yield is respectively improved by 5.09 to 14.63 times, 1 to 16.1 times and 1.6 to 10.15 times.

The invention discloses a gravity type sludge dehydration device, which comprises a shell, wherein the upside of the shell is provided with a water inlet pipe while the downside is provided with a drain pipe and a mud pipe, a dehydration device is connected with the inside of the shell from top to bottom and divides the cavity of the shell into a water purifying area and a mixing area, a mixing distribution cylinder having a round cross section and communicated with the water inlet pipe, a first water eliminator, a second water eliminator are arranged from top to bottom in the mixing area, and the mud pipe is communicated with the lower end of the mixing area; a water collection bailer is arranged in the water purifying area, and the drain pipe is communicated with the lower end of the water collection bailer; and the water inlet pipe is communicated with the mixing distribution cylinder, the mixing distribution cylinder is provided with water distribution holes, and the first water eliminator and the second water eliminator are arranged below the mixing distribution cylinder at intervals, tilt downwards and are opposite to the dehydration device. The gravity type sludge dehydration device is free from being driven by power devices, and the dehydration process depends on the gravity flow of water and the osmosis of filter cloth to release the water in the sludge. Besides, the dehydration efficiency of the sludge is high, the liquid holdup of filter cakes is between 80 and 85 percent, and the sludge recovery percent is over 90 percent.

The invention belongs to the technical field of road traffic, and provides a sunken type special riding road downwards penetrating a road intersection. The riding road is arranged on each of the two sides of a roadway, the road surface elevation of the riding road is lower than the elevation of an adjacent road surface, moreover, the road surface structure of the riding road adopts a water-permeable material, the riding road penetrates through the intersection in the form of downwards penetrating a channel at the road intersection, and the riding road is provided with outlet and inlet ports inthe front and back of the road intersection. According to the sunken type special riding road downwards penetrating the road intersection, rider traffic is taken as an independent traffic flow to beincorporated into urban road traffic organization design so that the traffic working efficiency and riding safety of riders can be improved, and the interference of the rider traffic on the whole roadtraffic also can be reduced.

The invention discloses a circular open channel. For the circular open channel, the cross section of the wall of the open channel is transversely capsule-shaped; the two ends of the wall of the open channel are circular; the circular wall at the upper end is provided with a shield, or is prolonged to form a linear wall for shielding the bottom of the open channel; and the circular open channel can be prepared into an open channel concrete pre-cast block having a certain length and the cross section, a total-cross-section pre-cast block, or two pre-cast blocks having a certain length and separated by the central symmetrical line. Water flows in a spiral flow manner in the channel, and the open channel is an efficient channel; the open channel is especially suitable for areas where the surface slope is large, the longitudinal slope gradient of the channel is large, and the channel needs to be bent; through the spiral flow, the upward energy produced by a high-speed water flow which impacts the side wall of the conventional open channel with a rectangular section is turned into rotational energy, so that the water flow in the channel neither overflows, nor washes against a side slope or damages the main body of the channel; and besides, the circular open channel can reduce the scale of a project, thus reducing the design and construction difficulties of the project, and saving the cost of the project.

The invention discloses an underground excavation subway station with a suspension type station hall layer and an independent rail-mounted area and a construction method thereof. The station is composed of a main body part and an auxiliary part; the main body part comprises the station hall layer, a downlink channel, an air channel and a platform layer; the auxiliary part comprises an external equipment room; the platform layer is composed of a rail-mounted area tunnel and a plurality of exchange channels; the rail-mounted area tunnel is divided into an ascending rail-mounted area tunnel and a descending rail-mounted area tunnel according to the subway driving direction; the ascending rail-mounted area tunnel and the descending rail-mounted area tunnel are arranged in parallel at intervals in the longitudinal direction of subway driving; the plurality of exchange channels are transversely arranged at intervals; rock pillars are arranged between the exchange channels; and the station hall layer is arranged on the two sides of the upper part of the platform layer in a suspended mode and is independently divided into two halls arranged in a suspended mode in the longitudinal direction. Therefore, traditional defects are overcome, the overall mechanical property of the structure is good, underground pipelines near the station or surrounding important buildings can be flexibly avoided, different areas of the station can be adjusted according to local conditions, the arrangement is flexible and simplicity and efficiency are achieved.

The invention provides a bridge deck capable of being used for a steel-UHPC (Ultra High Performance Concrete) composite beam bridge, a steel channel beam, a beam bridge and a construction method thereof the bridge deck, and aims to solve technical problems that the steel-UHPC composite beam bridge is overweight in bridge structure, not high in span, poor in crack resistance of a concrete bridge deck and the like. The bridge deck is a one-way rib UHPC bridge deck and comprises a thin bridge deck body and a plurality of UHPC transverse ribs integrally formed at the bottom of the bridge deck body, and the one-way rib UHPC bridge deck is not provided with longitudinal ribs; the steel channel beam is a U-shaped channel beam and comprises a bottom plate, webs connected to the two sides of the bottom plate and flange plates connected to the top faces of the webs, and longitudinal bridge direction stiffening ribs are arranged on the bottom plate and the webs; the beam bridge comprises a plurality of full-hole simply-supported beams which are mutually connected in the longitudinal direction of a bridge, and each full-hole simply-supported beam comprises a one-way rib UHPC bridge deck slab, a steel tank beam and a shear key. The beam bridge adopts a mode that in-plant construction is firstly performed to form a full-hole simply supported beam, and then on-site hoisting is performed. The bridge deck is advantaged in that the self weight of the bridge structure is reduced, stress is reasonable, pier top crack resistance is high, joints are few, construction is easy and convenient, and durability is excellent.

The invention provides a reinforcing method for additionally arranging a new arch ring under the main arch ring of an old stone arch bridge. The arch ring is newly arranged under the bridge, the bearing capacity of the bridge is improved, and the use safety of the structure is ensured. The construction process is simple, construction is convenient, and the reinforcing effect is good. The influenceon clearance under the bridge is reduced; a riverway under the bridge is trimmed; the riverbed is paved, the arch ring is newly arranged below the old stone arch bridge; compared with demolition andreconstruction, the reinforcing method has the advantages that the engineering scale is effectively reduced, the construction speed is high, the construction work amount and difficulty are reduced andthe cost is saved, constructors are reduced, the influence on the old structure is reduced, the special appearance of the stone arch bridge is retained; little impact is generated on the bridge traffic; trepanning device can meet trepanning work of old arch rings or foundation side walls with different heights and radians, the stability of the whole trepanning device during trepanning is improvedthrough cooperation and adsorption of negative pressure suction cups, trepanning work is completed twice at the same time, and meanwhile adjustment of the trepanning distance is facilitated.

The invention discloses an underground ventilator room system shared by double-track tunnels. The underground ventilator room system comprises the double-track tunnels and an underground ventilator room arranged on the outer sides of the double-track tunnels. An air supply duct, an exhaust duct and a natural air duct are formed in the underground ventilator room. The air ducts all penetrate through the underground ventilator room, an axial flow fan is arranged at the intersection of the air supply duct and the ventilator room, and the ends, away from the tunnels, of the air ducts communicate with a ventilating transverse gallery. The other end of the air supply duct communicates with a right-track tunnel through a right-track air supply opening, and a left-track air supply opening is formed in the middle of the portion, connected with the underground ventilator room and the right-track air supply opening, of the air supply duct and communicates with a left-track tunnel. The other end of the exhaust duct communicates with the right-track tunnel through a right-track exhaust opening, and a left-track exhaust opening is formed in the middle of the portion, connected with the underground ventilator room and the right-track exhaust opening, of the exhaust duct and communicates with the left-track tunnel. The natural air duct comprises a natural air duct body and a transportation channel. According to the underground ventilator room system shared by the double-track tunnels, the number of roadways is reduced, the ventilator utilization rate is increased, the project complexity can be effectively reduced, the project cost can be reduced, and the construction period can be shortened.

The invention provides an urban track bilateral station with bidirectional turn-back and overtravel functions. A first arrival-departure line, a turn-back line and a second arrival-departure line are sequentially arranged between an uplink main line and a downlink main line of the station, an uplink platform is arranged between the first arrival-departure line and the turn-back line, and a downlink platform is arranged between the turn-back line and the second arrival-departure line; the uplink main line is sequentially connected with two ends of the first arrival-departure line and two ends of the turning line through a first single crossover and a third single crossover; the downlink main line is sequentially connected with two ends of a second arrival-departure line and two ends of a turning line through a second single crossover and a fourth single crossover; the first single crossover and the third single crossover are located on the two sides of the uplink platform respectively; and the second single crossover and the fourth single crossover are located on the two sides of the downlink platform. According to the urban track bilateral station, the station has multiple functions of going over in the up-down direction, stopping and turning back, and also has a function of parking a faulty vehicle, so that the number of distribution stations and the engineering scale of the whole line are reduced.

The invention provides a permanent and temporary combined mountainous area deck type arch bridge structure and a construction method thereof. The permanent and temporary combined mountainous area deck type arch bridge structure comprises an arch support and a bridge abutment which serve as a permanent buckling tower foundation, and a permanent buckling tower lower tower column is located on the arch support and connected with the arch support into a whole; a permanent buckling tower cross beam is mounted at the upper end of the permanent buckling tower lower tower column, and permanent buckling tower upper tower columns are mounted on the two sides of the permanent buckling tower cross beam; a main arch ring is installed between the two arch seats, and an on-arch stand column is erected at the upper end of the main arch ring; and a bridge deck system is erected at the upper ends of the bridge abutment, the permanent buckling tower cross beam and the on-arch stand column. The arch rib is rigidly connected with the permanent buckling tower through the skewback, the skewback serves as a common foundation of the permanent buckling tower and the arch bridge, and the construction measure cost of the arch bridge can be greatly reduced. The overarch high stand columns and approach bridge lower structures within the coverage range of the single-tower cable-stayed bridge are saved, the engineering scale is reduced, and meanwhile damage to mountains on the two sides is reduced.