310results about "Bridge applications" patented technology

Disclosed in the present invention is a spatial three-dimensional suspended corridor, comprising a suspended corridor that connects indoor floor passageways, wherein diagrid columns are provided on all edge portions of the indoor floor passageways; the suspended corridor comprises several fixed segments and several bridge deck segments from bottom to top; and the fixed segments or corner segments are all connected to the corresponding bridge deck segments by means of node connecting components. In the present invention, by means of some implementable tests and on the basis of having a preliminary understanding of the stress performance of a corridor structure, a corridor simulation model is also established, parameters of the model are continuously optimized for repeated debugging, preliminary stress performance calculations are then performed and compared with results of some previously conducted tests, and if results are quite similar to the test results, this proves that the model is relatively optimal, that is, an optimized model is obtained, and then this model is used to analyze other more complex performances of the corridor. The optimization objective of the present invention is to make the structure and stress of an aerial corridor safer, more reliable and more comfortable.

The trestle comprises a main bridge, a moving seat and a rock drilling mechanism, the main bridge and the moving seat can move longitudinally, the rock drilling mechanism can swing transversely, the main bridge is provided with a passing part allowing vehicles to pass and a longitudinal moving rail allowing the moving seat to move, the longitudinal moving rail is arranged below or on the side face of the passing part, and the rock drilling mechanism is connected with the moving seat. The excavation method comprises the steps that S1, the main bridge walks in place; s2, the front approach bridge moves forwards to be in lap joint with a to-be-excavated step, a protective cover moves to an avoiding position, a moving seat drives a rock drilling mechanism to move forwards, and the rock drilling mechanism conducts shot hole rock drilling on the to-be-excavated inverted arch end face; s3, the rock drilling mechanism and the front approach bridge retreat to the safety area, and the protective cover moves to the front of the rock drilling mechanism; s4, charging and blasting in each shot hole of the inverted arch, and removing slag; and S5, the steps S2 to S4 are executed repeatedly till the whole construction interval of the inverted arch is excavated. The device has the advantages that the structure is reliable, rock drilling and vehicle passing deslagging can be considered, and the construction progress can be improved.

A method for erecting a portion of a transportation structure including two assemblies of tube segments, capable of being placed under low air pressure and through which pods may travel substantially free of air friction, the method including: (a) erecting a substructure including a first plurality of girders forming a first transportation pathway, a second plurality of girders forming a second transportation pathway and a plurality of platforms forming a service pathway, the erecting step including conveying with vehicle(s) the girders and platforms along the first and / or second transportation pathway, positioning them and having the vehicle(s) return along the service pathway, (b) conveying, with vehicle(s), the tube segments along the first and / or second transportation pathway, positioning them and having the vehicle(s) return along the service pathway. A portion of a transportation structure is also provided.

The invention relates to a synchronous removal deep foundation pit for deeply burying large waste rafts in a sensitive environment and a construction method. Comprising a prefabricated assembly type trestle plate step-by-step reinforced concrete supporting trestle technical system, a steel casing and rapid prefabricated assembly type water collecting pit setting technical system, a waste bottom plate block-by-block breaking-first-cutting-crushing-dismantling technical system and a reserved pile filling hole position segment-by-segment block-by-layer backfilling technical system. The construction method has the beneficial effects that rapid construction of the reinforced concrete supporting trestle is achieved, the structural stability is guaranteed, and the construction efficiency is improved; high efficiency and quality control of construction of the stand column pile are achieved, meanwhile, the concrete over-filling amount is reduced, and the construction economical efficiency is improved; rapid setting and automatic management of the sump are realized, and the construction efficiency and the reliability of a drainage system are effectively improved; safe and efficient dismantling of the waste bottom plate is achieved, the construction precision is guaranteed, and the operation efficiency is improved.

A bridge structure for bearing a gravel aggregate transportation corridor relates to the technical field of bridge engineering and comprises two spans of box girders, and each span of box girder comprises a No.0 girder section, a No.1 girder section and a closure girder section. The zero beam section is located at the top of a pier column, the first beam section is anchored on the zero beam section through a pre-stressed anchor cable, the folding beam section is divided into two spans and arranged on the two sides of the first beam section, the lower portion of a pier is provided with a swivel system, a double-swivel structure is adopted, in the construction process, swivel folding is conducted after cast-in-place is conducted on the two sides of an existing railway line, and operation safety of the existing railway line in the construction period is guaranteed. A bottom plate of the folded box girder is in a plane shape, a top plate of the box girder is in a parabola shape, the whole box girder is in an upper-curved and lower-flat shape, and a gravel aggregate conveying machine is installed on the bottom plate in the box girder. Different from an arch bridge structure of a traditional bridge, the arch bridge structure is inverted up and down, the problem that a transportation corridor is arranged on a girder web is solved, safety risks caused by the fact that the transportation corridor is arranged on the top of the bridge are avoided, and operation cost is reduced.

The utility model provides a trestle structure for bridge pier construction, and relates to the technical field of bridge construction, a bracket is arranged above a bridge pier, two groups of trestle frames are spliced above the bracket, limiting plates are arranged above the two groups of trestle frames, the middle parts of the limiting plates are fixedly connected to the trestle frames, and the two ends of the limiting plates are fixedly connected to the bracket; trestle plates are arranged on the limiting plates and the upper surface of the trestle frame. Due to the arrangement of the limiting plates, when the length of the bracket is large, the connecting positions of the bracket and the trestle frames on the two sides are increased, the contact area for supporting the trestle frames is also increased, and the trestle can walk on the trestle plate more stably; the trestle frames are fixed to the brackets through the limiting plates, the lower portions of the ends of all the trestle frames are restrained by the brackets, the upper portions of all the trestle frames are restrained by the limiting plates, the limiting plates apply downward force to the trestle frames at the two ends of the trestle frames, the risk of deformation of the trestle frames is reduced, the trestle frames are kept straight, the quality of the trestle is improved, and the service life of the trestle is prolonged.

The invention discloses a heat preservation integrated floor slab system of an assembly type modular steel structure trestle, and belongs to the technical field of assembly type steel structure trestles. A floor slab module is composed of a plurality of prefabricated concrete groove-shaped plates arranged in sequence, and heat preservation materials are arranged at the bottoms of the prefabricated concrete groove-shaped plates; the multiple prefabricated concrete groove-shaped plates are sequentially arranged in the square frame in the length direction of the end transverse beams. Compared with an existing traditional floor slab system construction mode, installation is convenient and efficient, and on-site wet operation is little.

The utility model relates to the technical field of hydraulic engineering, in particular to an inter-aqueduct joint water stop device which comprises aqueduct bodies, aqueduct piers and waterproof assemblies, a plurality of aqueduct bodies are arranged in parallel, the adjacent aqueduct bodies are bonded through adhesives, the upper end faces of the aqueduct piers are connected with the aqueduct bodies, and the waterproof assemblies are connected to the upper end faces of the adjacent aqueduct bodies. According to the utility model, the telescopic component adjusts the width of the connecting plate to fit the joint between the connecting plate and the aqueduct, so that the deformation and damage of the connecting plate caused by thermal expansion and cold contraction of the aqueduct main body are avoided, and the adjusting component moves and drives the waterproof strip to move vertically, so that the waterproof strip clings to the inner wall of the aqueduct main body; water leakage caused by inclined displacement of the waterproof baffles due to abrasion of the waterproof strips or displacement and height difference of the aqueduct bodies is prevented, the positioning assemblies limit movement of the connecting plates in the vertical direction, and meanwhile the positioning assemblies limit movement of the aqueduct bodies on the two sides.

The invention relates to an inverted arch trestle system and a construction method, and belongs to the technical field of tunnel trestles, the inverted arch trestle system comprises a bridge body, a front approach bridge is hinged to one end of the bridge body, a rear approach bridge is hinged to the other end of the bridge body, a front support is arranged at one end of the bridge body, and a rear support is fixed to the other end of the bridge body; the front support comprises supporting legs, each supporting leg comprises an inner barrel, an outer barrel, a base plate and a hydraulic cylinder, the hydraulic cylinders are vertically located in the outer barrels, the inner barrels are slidably connected with the outer barrels, the piston ends of the hydraulic cylinders are fixedly connected with the inner walls of the tops of the inner barrels, and one ends of bodies of the hydraulic cylinders are detachably connected with the inner walls of the bottoms of the outer barrels. A limiting assembly used for controlling whether one end of a hydraulic cylinder body is connected with the bottom of the outer barrel or not is arranged on the outer barrel. An inserting hole is formed in the vertical side wall of the outer barrel, when the length of the hydraulic cylinder adjusting supporting leg needs to be indirectly increased, the base plate is horizontally inserted and embedded into the outer barrel, one end of the hydraulic cylinder body is rotationally connected to the top of the base plate, and the effects that the adjusting flexibility of the trestle in a tunnel is improved, and the adjusting limitation is reduced are achieved.

A method for erecting a portion of a transportation structure including a plurality of piers, a plurality of platforms forming a service pathway, a first plurality of girders forming a first assembly of tube segments, capable of being placed under low air pressure and through which pods may travel substantially free of air friction, and forming a first rooftop transportation pathway the method including conveying with vehicle(s) the girders and platforms along the first transportation pathway, positioning them and having the vehicle(s) return along the service pathway. A portion of a transportation structure is also provided.

The utility model relates to a trestle for turning around vehicles in a tunnel, which comprises a trestle main body, a supporting structure for supporting the trestle main body, a front approach bridge arranged at the front end of the trestle main body and a rear approach bridge arranged at the rear end of the trestle main body, a turning-around device is embedded on the upper surface of the trestle main body, and the supporting structure comprises a fixed supporting leg and a movable supporting leg. The fixed supporting legs are arranged at the two ends of the trestle body, the movable supporting legs are arranged in the middle of the trestle body, each of the fixed supporting legs and the movable supporting legs comprises a sleeve and an inner column arranged in the sleeve in a sleeved mode, the sleeves of the fixed supporting legs are fixedly connected with the trestle body, and the sleeves of the movable supporting legs can move in the length direction of the trestle body through walking devices. By arranging the turning device, when a vehicle needs to turn around, the vehicle can be driven onto the trestle and steered through the turning device, and passing of other vehicles is not affected, so that the use efficiency of a road is greatly improved, meanwhile, the trestle can adapt to the installation requirements of different heights, production standardization of the trestle is facilitated, and the application range of the trestle is wider.

A pipe gallery for offshore chemical pipeline laying relates to a pipe gallery, a plurality of square pipe boxes (3) corresponding in head and tail are arranged at intervals above the sea surface (9), two oppositely arranged connecting square pipes (7) are arranged between every two adjacent square pipe boxes (3), two pipe cavities (13) of the adjacent two square pipe boxes (3) and the cavities (15) of the two connecting square pipes (7) located between the adjacent two square pipe boxes (3) are through, and the '' rectangle '' shaped cover plate (5) covers the two inclined waist surfaces outside the two opposite connecting square pipes (7). The application realizes the effective weight decomposition of the square pipe boxes with large self-weight by arranging a plurality of square pipe boxes corresponding in head and tail and with large self-weight at intervals above the sea surface and hanging two oppositely arranged connecting square pipes with small self-weight on the end portions of the two square pipe boxes between every two adjacent square pipe boxes, and overcomes the problem of unstable bottom plate of the hanger and difficult docking when docking on the sea surface.

The utility model relates to an integral rapidly-assembled aqueduct bent frame column construction operation platform which comprises a vertical rod support. Three layers of operation bedplates are arranged in the height direction of the vertical rod bracket at equal intervals; the guardrails are installed on the periphery of the vertical rod support and located between the adjacent working platens. The one-truss operation module is composed of the vertical rod support, the three layers of operation platens and the guardrails, the adjacent operation modules are connected through the hook-shaped plug pins, the operation modules can be modularly produced in batches, and when the operation modules are used, only the corresponding number of operation modules need to be selected according to the heights of the framed bent columns, and the operation modules can be conveniently assembled. The aqueduct bent frame column construction operation platform can be assembled by vertically stacking the multiple truss operation modules and inserting the hook-shaped plug pins, during disassembly, only the hook-shaped plug pins need to be pulled out and the operation modules need to be disassembled, compared with a traditional on-site building and scaffold disassembly mode, the operation modules of the construction operation platform can be repeatedly used, and the construction efficiency is improved. Assembly and disassembly are easy and fast, time and labor are saved, and the construction progress is effectively accelerated.

The invention discloses a multifunctional safety type connecting bridge system for an LNG (liquefied natural gas) filling wharf boat, which comprises a connecting bridge body, the connecting bridge body comprises an LNG equipment cabin and a pedestrian guardrail, an LNG pipeline group is laid in the LNG equipment cabin, and two ends of the LNG pipeline group are respectively communicated with a fixed pipeline of the connecting wharf boat and are output / input outwards; the LNG equipment cabin comprises an anti-explosion partition plate and an anti-explosion sealing top plate, the anti-explosion partition plate and the anti-explosion sealing top plate jointly define a cabin space for laying of the LNG pipeline set, the pedestrian guardrail is fixedly connected to the top of the LNG equipment cabin, and the pedestrian guardrail and the LNG equipment cabin define a pedestrian path; the LNG equipment cabin is movably connected with the wharf boat and the wharf through universal hinge supports. Through mechanical design and flexible connection design of vertical space layering, physical isolation of a dangerous source and a personnel channel is achieved in a single bridge body, safety is improved, the overall design is miniaturized, and the device is more suitable for transformation projects with limited space and can adapt to wharf boat operation under various hydrological conditions.

The invention relates to the technical field of water conservancy and hydropower ecological protection, in particular to a fishway with a traffic function and an operation method of the fishway. Each spliced fishway comprises a fixed fishway section and rotary fishway sections arranged at the upstream end and the downstream end of the fixed fishway section; connecting bridges are respectively arranged in the river channels on the upstream side and the downstream side of the dam body; a tempered glass plate is laid on the top of the rotary fishway section. When the rotary fishway section rotates to be in a butt joint state with the connecting bridge, the rotary fishway section and the connecting bridge are spliced together to form a bridge body. In a fish passing season, the rotary fishway sections are spliced at the two ends of the fixed fishway section to form a spliced fishway for executing a fish passing mode; and in a non-fish passing season or other time periods where fish passing is not needed, the rotating fishway section is rotated to be in a butt joint state with the connecting bridge, and the rotating fishway section and the connecting bridge are jointly spliced to form a bridge body for executing a traffic mode.

The invention provides a vehicle self-adaption compatible open island type elevated BRT station system which comprises an open island type elevated station structure, the elevated station structure comprises a ground layer and a two-layer composite layer arranged above the ground layer, and the two-layer composite layer comprises an open pedestrian overpass and an island type platform. The open type pedestrian overpass and the island type platform are of an integrated station-hall-free structure. The elevated station structure further comprises a central vertical traffic core connected with the ground layer and the two-layer composite layer. Passenger doors are arranged on the left side and the right side of a vehicle body of the BRT vehicle, a vehicle control system and an in-vehicle fare collection system are arranged in the BRT vehicle, and the vehicle control system is configured to automatically or manually control the passenger door on the corresponding side to be opened or closed according to the type of a stop platform. Through cooperation of station structure innovation, operation mode opening and vehicle configuration intelligence, the problems that a traditional BRT system is large in occupied area, poor in compatibility and rigid in dispatching can be solved.

The utility model belongs to the field of hydraulic engineering facilities, and provides an assembly type glass fiber reinforced plastic mortar pipe aqueduct which comprises an aqueduct body, a truss type aqueduct supporting column and a supporting protection assembly, the truss type aqueduct supporting column comprises a truss steel stand column and a truss structure, and the truss steel stand column comprises a concrete bearing platform, a steel stand column and a truss base; the aqueduct body is fixed to the truss type aqueduct supporting columns through a plurality of supporting structures. The supporting protection assembly and the truss type aqueduct supporting column are welded together. The truss structure comprises a plurality of triangular frame units, and each triangular frame unit is composed of an upper chord member, a lower chord member, a vertical rod and a web member. The device has the advantages of being high in construction speed, high in intelligent building degree, free of maintenance in the life cycle and excellent in durability.

The utility model provides an aqueduct body expansion joint water stop device which comprises aqueduct bodies, and an expansion joint is formed between every two adjacent aqueduct bodies. The U-shaped water stop belts are connected with the two adjacent groove bodies respectively, and U-shaped grooves of the U-shaped water stop belts are plugged at the expansion joints; and the stainless steel pressing plate is located between the U-shaped water stop belt and the groove body, a closed cavity is formed between the stainless steel pressing plate and the U-shaped water stop belt, and the closed cavity is filled with caulking materials to form a caulking material glue layer. According to the utility model, a caulking type water stop mode and a pressing plate type water stop mode are combined, and the U-shaped water stop belt, the stainless steel pressing plate and the caulking material are adopted, so that the total cross-section water stop function of the water stop rubber belt is realized, water permeation is effectively prevented, and the sealing performance of the aqueduct is enhanced.

The present invention discloses an aqueduct structure and a waterstop maintenance construction device, and relates to the technical field of aqueduct maintenance. It includes an enclosure assembly and a support frame; there are walkway plates on both sides of the top of the U-shaped aqueduct, and there are crossbeams between the walkway plates; the enclosure assembly includes a first enclosure plate, a second enclosure plate, a gate, and a sealing device; the gate can rotate vertically around the first enclosure plate and the second enclosure plate; the sealing device is located at the bottom of the first enclosure plate and the second enclosure plate, and at the contact point between the gate and the U-shaped aqueduct; each layer of the support frame includes a first support rod and a second support rod. The construction personnel of the present invention can descend into the aqueduct to inspect or repair the side wall of the aqueduct, which is convenient and applicable. The present invention also discloses a method for using the aqueduct structure and the waterstop maintenance construction device.

The trestle bridge capable of being used for tunnel waterproof construction comprises a main bridge, longitudinal moving guide rails are arranged on the two transverse sides of the main bridge, a moving trolley is arranged on the longitudinal moving guide rails, the moving trolley is connected with an operation platform, and a winding drum, a pressing mechanism and a mechanical arm are arranged on the operation platform. The movable trolley drives the working platform, the winding drum, the pressing mechanism and the mechanical arm on the working platform to move in the longitudinal direction, constructors operate on the working platform, waterproof coiled materials such as geotechnical cloth and waterproof plates can be arranged on the winding drum, manual lifting and carrying are not needed, the labor intensity of the constructors and the operation difficulty are reduced, use is safer and more convenient, and the construction efficiency is improved. After the geotechnical cloth and the waterproof plate are pulled out of the winding drum and the installation positions are determined, the pressing mechanism can press the geotechnical cloth and the waterproof plate on the side wall to avoid falling off, the nail gun, the pressure welding mechanism and the creeping welding machine are sequentially installed on the mechanical arm, the mechanical arm is used for driving the construction tool to move to complete the corresponding working procedures, and the automation degree of waterproof roll construction is greatly improved.

The utility model provides a tide bridge at the junction of salt water and fresh water. The first stand column is connected with the base; the flap valves are installed between the two adjacent first stand columns, and the opening direction of the flap valves is the saline water direction. According to the utility model, the flap valve is arranged at the first upright post, so that the boundary of salt water and fresh water is realized, and on the other hand, under the action of internal and external water pressure, automatic tide blocking and flood drainage are realized, the gate is prevented from being frequently opened and closed, equipment does not need to be opened and closed, the operation management is simplified, the operation cost is reduced, and the safe and economic effects are achieved.

The invention discloses a male pipe combined construction steel truss girder bridge, and relates to the field of steel truss girder bridges, the male pipe combined construction steel truss girder bridge comprises a bridge deck slab and a cross beam arranged below the bridge deck slab, a plurality of web members are arranged between the cross beam and the bridge deck slab, the web members are located on the two sides of the cross beam, and the web members, the bridge deck slab and the cross beam jointly define a pipeline space used for containing a plurality of pipelines; wherein the pipeline space comprises a first pipeline space body and a second pipeline space body which are arranged in the bridge direction of the steel truss girder bridge, the first pipeline space body is located above the second pipeline space body, and a pipeline support used for containing pipelines is arranged between the first pipeline space body and the second pipeline space body. Multifunctional combined construction of the road and the pipeline is achieved, various traffic and municipal demands under the condition of river crossing, river crossing and other channel resource shortage conditions are met, the public pipe combined construction design can reduce the cost and resource occupation of independent construction of a pipeline bridge, meanwhile, the pipeline and the road are integrated in the same bridge structure, and the construction cost is reduced. And unified maintenance and management are facilitated.

The invention discloses a self-adaptive temperature control system of a large-span cable bridge and an installation method of the self-adaptive temperature control system. The self-adaptive temperature control system comprises a concrete support, a large-span bridge, a movable base, a limiting support, a fixed cable channel, a bridge cable channel, a first movable clamp, a second movable clamp, a movable wedge, a linear actuator, a third movable clamp, a fixed clamp and a cable. The two ends of the large-span bridge are arranged on the concrete supports on the corresponding sides through the movable bases and the limiting supports. A fixed cable channel arranged along the cable extension direction is arranged in the concrete support, and a through bridge cable channel is formed in the large-span bridge; the cable is fixedly laid in the channel through a plurality of fixing clamps. According to the scheme, the structural stability of the concrete support and the large-span bridge is protected, and the problem that in the prior art, a cable at the end of a large-span cable bridge is excessively abraded is solved.

The utility model provides an assembly type arch aqueduct supporting frame which comprises an arch rib, buttresses are installed at the bottom of the arch rib, a plurality of framed bent columns are arranged at the top of the arch rib, the tops of the framed bent columns are connected with an aqueduct body through an installation mechanism, and the installation mechanism comprises a connecting base and a slope installation column. A limiting groove is formed in the side edge of the inclined surface mounting column, the connecting seat is mounted at the top of the framed bent column, a mounting seat is mounted at the top of the connecting seat, a clamping assembly matched with the limiting groove is arranged in the mounting seat, and a pedal assembly matched with the clamping assembly is arranged on the outer surface of the mounting seat. Compared with the prior art, the aqueduct has the advantages that the aqueduct structure is formed by splicing the plurality of aqueduct bodies in a modularized mode, so that when a certain section of aqueduct body of the aqueduct is damaged, the aqueduct body at the damaged position can be replaced, and the maintenance cost of the aqueduct body is reduced.

The utility model discloses a river-crossing pipeline structure which comprises a foundation, two buttresses are poured on the foundation, the two buttresses are arranged on two banks of a river channel, and a pipeline main body structure is fixedly connected between the two buttresses. According to the river-crossing pipeline structure, the rigidity and the stability of the river-crossing pipeline are improved, the application range of the river-crossing pipeline is expanded, the overall sectional area of the structure is increased by utilizing the strength of the river-crossing steel pipe and adding the reinforced profile steel at the bottom, the structural stress in the middle of a large bending moment is reduced, and therefore when the span is large, the rigidity and the stability of the river-crossing pipeline are improved. Structures such as pipe bridges and trusses can be prevented from being used, the steel pipe can still be used for directly crossing the river channel, the application range of the river-crossing pipe bridge is widened, and remarkable economic benefits are achieved.

An embodiment of the present application provides a track beam and a suspended monorail beam bridge. The track beam includes a steel box and transverse spacers. The transverse spacers are disposed in the steel box and connected to two side walls of the steel box to partition a first chamber and a second chamber located at the top of the first chamber in the steel box. An opening is provided on the bottom wall of the first chamber, and the opening extends along the extending direction of the track beam. Inner surfaces of the bottom wall of the first chamber on both sides of the opening form running surfaces. The track beam and the suspended monorail beam bridge according to the embodiments of the present application can improve the comfort and smoothness when a suspended monorail train is running.

The trestle comprises a main bridge and a rock drilling trolley, a front approach bridge capable of moving longitudinally and a lifting mechanism used for driving the rock drilling trolley to ascend and descend are arranged at the front end of the main bridge, the lifting mechanism is detachably connected with the rock drilling trolley, and a rock drilling mechanism is arranged on the rock drilling trolley. The excavation method comprises the steps that S1, the front end of the front approach bridge is in lap joint with a to-be-excavated step, the rock drilling trolley is located below the front approach bridge, and the rock drilling mechanism conducts shot hole rock drilling; s2, after rock drilling of all shot holes is completed, the front approach bridge retreats to make up an ascending space, and a lifting mechanism is connected with the rock drilling trolley and then drives the rock drilling trolley to ascend; s3, the front approach bridge moves forwards to enable the front end to be overlapped on the to-be-excavated step again, the lifting mechanism lowers the drill jumbo to the front approach bridge, the drill jumbo retreats to the main bridge through the front approach bridge, and then the front approach bridge retreats to the main bridge; and S4, the blastholes are filled with explosives for blasting. Rock drilling and vehicle passing deslagging can be considered, the construction efficiency can be improved, and the safety is good.

The invention provides a trestle assembly type non-traditional water source collecting and utilizing device. The trestle assembly type non-traditional water source collecting and utilizing device comprises a trestle plate face drainage assembly, a primary collecting assembly, a filtering assembly, a fixing assembly, a water conveying pipe and a secondary collecting water tank. The primary collecting assembly is installed on the outer side of the trestle through the fixing assembly, and the filtering assembly is arranged in the primary collecting assembly. The trestle plate surface drainage assembly is installed at a water drainage opening reserved in a near-edge guide wall of a trestle in a penetrating mode, one end of the trestle plate surface drainage assembly extends to the plate surface of the trestle, and the other end of the trestle plate surface drainage assembly extends into the primary collecting assembly and is located above the filtering assembly; the secondary collecting water tank is installed on a fixing component below the primary collecting assembly, one end of the water conveying pipe is communicated with the interior of the primary collecting assembly, and the other end of the water conveying pipe extends into the secondary collecting water tank. The invention relates to the technical field of building construction and can solve the problem that in the prior art, a trestle board is manually cleaned and drained.