365results about "Ground-work" patented technology

The invention provides a box culvert jacking attitude intelligent control method and system based on digital twinning, and relates to the technical field of attitude control. Structural parameters of a box culvert entity, parameters of a construction environment, and elevation change data and axis offset data in a jacking process are obtained, and the two kinds of data are integrated to obtain a box culvert jacking attitude intelligent control system; generating a box culvert jacking attitude data frame sequence; according to box culvert entity reference information in the model and the updated box culvert real-time state information, combining the box culvert jacking attitude data frame sequence to determine box culvert actual attitude parameters, comparing the box culvert actual attitude parameters with box culvert design attitude parameters, determining attitude deviation types and attitude deviation values corresponding to the box culvert axis direction and the box culvert height direction respectively, and calculating the box culvert jacking attitude data frame sequence according to the attitude deviation types and the attitude deviation values. According to the method, the attitude adjustment control instruction is generated according to the attitude of the box culvert, so that the equipment drives the jack to adjust the jacking attitude of the box culvert according to the instruction, dynamic synchronization and accurate mapping of the structural state in the jacking process of the box culvert are realized, and the real-time performance, the accuracy and the control robustness of attitude adjustment are improved.

The invention provides an intelligent deviation correction control method and system for box culvert pushing, and relates to the technical field of underground engineering construction.The method comprises the steps that a box culvert three-dimensional model is constructed by collecting construction related data; simulating the space change trend of the attitude structure of the box culvert under different working condition parameters by utilizing a virtual construction technology, generating a correction control instruction by combining with the box culvert three-dimensional model, and collecting attitude data of the box culvert after executing the instruction so as to adjust the attitude structure of the box culvert in the box culvert three-dimensional model to obtain a corrected box culvert three-dimensional model; and performing correlation analysis on the corrected box culvert three-dimensional model, the position data of the existing line, the trend data of the underground pipeline and the burial depth data to adjust the correction control instruction until the actual attitude deviation of the corrected box culvert three-dimensional model meets a preset box culvert construction condition. Intelligent deviation correction control over the box culvert in the incremental launching construction process is achieved, and the real-time sensing capacity and structural safety of box culvert incremental launching construction in complex underground engineering are improved.

This invention provides a precast box culvert for urban roads and its jacking construction method. The precast box culvert includes a precast box culvert body, with interfaces suitable for sealing and insertion at both ends. Multiple insertion holes are arrayed at the first end of the box culvert body, and multiple pins are arrayed at the second end of the box culvert body opposite to its first end. Each pin is adapted to be inserted into a corresponding insertion hole. A locking structure is provided between the pin and the insertion hole. When the first end interface of one box culvert body is inserted into the second end interface of another box culvert body, the locking structure locks the pin in the corresponding insertion hole. The precast box culvert and its jacking construction method provided by this invention not only ensure stable and reliable connection between adjacent box culvert bodies, but also eliminate the need for on-site secondary pouring during the jacking construction process, greatly improving the efficiency of jacking construction and shortening the construction cycle.

The utility model discloses a movable assembly type formwork for box culvert construction, which belongs to the technical field of box culvert formworks, and comprises an inner formwork and an outer formwork, the inner formwork comprises a bottom longitudinal beam, the bottom longitudinal beam is fixedly connected with a plurality of first support rods respectively, the first support rods are sleeved with first connecting pipes in a sliding manner, and the first connecting pipes are sleeved with second connecting pipes respectively; the end, away from the first supporting rod, of the first connecting pipe is slidably sleeved with a second supporting rod, transverse rods are fixedly connected to the second supporting rod, a second connecting pipe is arranged between the two transverse rods, hydraulic oil cylinders are fixedly installed on the first supporting rod, the second supporting rod and the transverse rods respectively, and inner formworks are detachably installed on piston rods of the hydraulic oil cylinders. The outer formwork comprises a support, an outer formwork is installed on the support, and idler wheels are installed at the bottom of the bottom longitudinal beam and the bottom of the support respectively. The utility model solves the problems that in the manufacturing process of the box culvert in the prior art, due to different sizes of the box culvert, the construction of a formwork is easily limited, the formwork is difficult to mount, dismount and circulate, the construction period is seriously restricted, and the construction cost is increased.

This invention relates to the field of pipeline construction technology and discloses a positioning mold for thin-layer concrete mortar strip application in culverts. The mold includes positioning rings consisting of two connecting blocks, each fitted around the outside of two culverts. The scraping assembly includes a scraper blade I positioned between the two positioning rings for scraping off excess mortar, a receiving groove inside the scraper blade I, and a scraper blade II slidably inserted into the receiving groove for adjusting the overall length of the scraper blade I. Screws are rotatably connected to the outer sides of both scraper blade I and scraper blade II, and the external threads of the screws are fitted with mounting blocks fixed to adjacent connecting blocks. This invention allows construction workers to easily fill and smooth the annular gap between two culverts, helps control the width of the mortar strip, and facilitates the scraping off of excess mortar, resulting in high workability.

The utility model discloses a road structure suitable for a valley terrain. The road structure comprises an original foundation excavation step, a cement concrete pile, a sand cushion layer, a cement concrete plate, a pipe culvert, waterproof geotechnical cloth, a cement concrete wall, a hard geocell, a pavement structure and an EPS (Expandable Polystyrene) filling block. The pile foundation structure and the cement concrete plate are arranged at the bottom of the road structure, the cement concrete wall pairs divide the EPS filling area into a plurality of units and make direct contact with the exposed part of the pipe culvert to fix the pipe culvert, the hard geocell is laid on the cement concrete-EPS composite roadbed, and the pavement structure is laid on the geocell which is backfilled with plain soil. Through the combined arrangement of the pipe culvert and the sand cushion layer, smooth drainage of the valley terrain is guaranteed, the waterproof effect of the EPS roadbed is guaranteed through the arrangement of the reinforced concrete pouring structure and the waterproof structure layer, the pile foundation can transmit loads to a deeper soil layer with higher bearing capacity, construction is convenient, noise is avoided, and differential settlement of the roadbed is effectively reduced.

The invention relates to the technical field of rainwater and sewage pipe culvert construction, in particular to a rainwater and sewage square culvert tail end plugging stop block and a construction method.The rainwater and sewage square culvert tail end plugging stop block comprises a plugging block, the side end face of the plugging block is of a right trapezoid structure with the narrow upper portion and the wide lower portion, the upstream face of the plugging block is a vertical face, and the downstream face of the plugging block is an inclined face; second haunch angles matched with the first haunch angles at the bottom of the square culvert are arranged on the two sides of the bottom of the plugging block respectively, and a hanging ring is arranged at the top of the plugging block. The gravity type trapezoidal structure with the narrow upper portion and the wide lower portion is adopted, the anti-floating capacity and the anti-overturning capacity are high, large-flow and high-flow-speed water flow impact can be resisted, the check blocks are prefabricated parts and only need to be hoisted in place on site, the underwater operation risk is avoided, the plugging construction time is greatly shortened, and a follow-up construction working face can be rapidly provided.

The utility model relates to the technical field of blind ditches, and provides an assembly type water seepage and drainage blind ditch which comprises a plurality of main bodies which are connected end to end, and each main body comprises a water drainage pipe used for water drainage after being connected; the support is used for supporting the drainage pipe, one side of the support is provided with an installation hole, the other side of the support is provided with a guide column, and the guide column of the adjacent body is used for sliding into the installation hole of the adjacent body. By means of the technical scheme, the problems that in the prior art, blind ditch composition materials are complex, and each material is not a finished product and needs to be automatically machined or remachined after being purchased are solved.

The invention relates to the technical field of landslide disaster treatment, and discloses a cutting section landslide treatment method and structure based on a steel corrugated plate, which adopts an innovative combined structure of the steel corrugated plate and a reinforced concrete lining to realize advantage complementation of flexibility and rigidity; wherein the steel corrugated plate can effectively resist external soil pressure and flexibly absorb settlement deformation of a foundation by virtue of extremely high axial compressive strength and excellent deformation adaptive capacity, and meanwhile, the steel corrugated plate is used as a supporting template of a concrete structure, so that the aim of quickly implementing protection is fulfilled; the reinforced concrete lining greatly improves the overall rigidity and the shear strength of the structure, and the problem that a pure steel structure is prone to local instability is fundamentally avoided; and the two synergistically form a strong retaining system, so that the treatment effect is lasting and stable, and potential safety hazards are thoroughly solved.

The box culvert structure for the water gate pump station comprises a box culvert body, the top end of the box culvert body is connected with a top block, the side walls of the two sides of the box culvert body are each connected with a plurality of sets of bottom blocks, the side walls of the box culvert body are provided with a ladder stand mechanism, a protection mechanism is installed on the ladder stand mechanism, and the top block and the bottom blocks are perpendicularly distributed. The pedal is square, a person can conveniently step on the pedal and is not prone to slipping, then the hand can grasp the round rods located on the two sides, the hand can conveniently grab the round rods without hurting the palm, and therefore the effect of climbing use is achieved, dust and sundries are conveniently pushed out from the side hole by means of the side hole flush with the top end of the pedal, and the safety of climbing is improved. Therefore, dust and sundries are prevented from being directly pushed out from the front, and the dust and the sundries are pushed to the body of a climber.

The invention discloses a soft soil area newly-built box culvert short-distance crossing operation subway line construction method which comprises the steps that positioning paying-off and blocking are conducted in a construction area, and before a foundation pit is excavated, ballasting bags with the specific stacking weight and height are arranged in the center of a corresponding subway tunnel rail according to the linear meter; holes are formed in the uplift pile positioning positions on the two sides of the subway tunnel, a first section of pile casing is hoisted and pressed downwards till the first section of pile casing sinks, the perpendicularity is adjusted, a rotary drilling machine takes soil to enable the pile casing to sink, all sections of pile casings are sequentially inserted into the designated burial depth, a reinforcement cage is put down to pour concrete, the pile casings are pulled out after the strength reaches the standard, and a cushion layer is made; the uplift pile end reinforcing steel bars on the same side are connected through reinforcing steel bar nets to form an uplift beam net, box culvert bottom plate reinforcing steel bars are bound, and an uplift pile, uplift beam and box culvert bottom plate integrated structure is formed through formwork erecting and pouring. According to the technical scheme, disturbance of construction to the subway tunnel can be reduced, and operation safety is guaranteed.

A precise adjustable vertical supporting rod for formwork construction comprises a top end pipe, a middle pipe and a smooth push rod system. The smooth push rod system comprises an outer sleeve, a push rod, a push plate, a clamping groove disc, a tightening plate, a pedal plate and a spring, the top end pipe, the middle pipe and the outer sleeve are sequentially nested, the clamping groove disc is fixed in the outer sleeve, the push rod penetrates through the clamping groove disc, the tightening plate and the push plate, and a notch is formed in one end of the tightening plate and clamped in a clamping groove part of the clamping groove disc; the push plate is placed on the upper side of the clamping groove disc, the middle of the pedal is connected with the outer sleeve through a rotating shaft, and one end of the pedal extends into the space between the push plate and the clamping groove disc. A platform is arranged at the top of the push rod, the springs comprise the first spring and the second spring, the first spring is arranged between the push plate and the platform, and the second spring is arranged between the lower surface of the clamping groove disc and the tightening plate. The top of the top end pipe is connected with a supporting plate which makes direct contact with a construction formwork. According to the utility model, the height is directly adjusted through pedal operation, so that the accuracy is improved, and the operation risk is reduced.

The utility model provides a spliced portable water guide device. The spliced portable water guide device comprises a water retaining device and a flow guide device, the water retaining device is arranged at a culvert water inlet and comprises a plurality of first water retaining sections and two second water retaining sections. The multiple first water retaining sections and the two second water retaining sections are spliced into a strip-shaped structure, and the multiple first water retaining sections are located between the two second water retaining sections; the cross section of the first water retaining section and the cross section of the second water retaining section are each of an L-shaped structure. A water guide opening is formed in the face, close to the culvert water inlet, of the first water retaining section, and the water guide opening is in threaded connection with the flow guide device, so that the problem that the construction efficiency is affected due to the fact that the flowing water flow guide difficulty of a lengthened culvert is large is solved.

Structural cell formwork, cells and matrices using the structural cells for positioning below a hardscape that define a void space therein, the structural cell formwork, cells, matrices using the cells and methods of assembly allowing in one embodiment the introduction of a structural fluid such as concrete to provide an alternative structural cell and matrix product.

The utility model provides a kind of culvert inner wall coating construction device and method based on rainwater and sewage diversion, including the culvert inner wall coating construction device body with strip beam (1), mesh (93) being arranged between strip beam (1), for the intermediate medium spot raw material liquid injection of mesh (93) spray nozzle (98), through culvert inner wall coating construction device body, realize the culvert inner wall coating construction operation, through mesh (93) and spray nozzle (98), realize the intermediate medium spot on the culvert inner wall, realize the intermediate medium layer on the culvert inner wall and precast to the raw material of culvert inner wall coating body produce effect, solve the technical problem that all use concrete mortar to smear between the concrete mortar is smeared on the culvert inner wall, due to the higher humidity inside culvert inner wall, thereby the solidification of concrete mortar and the adhesion force with culvert inner wall are influenced, thus improve culvert inner wall coating construction effect.

The application discloses a cantilever type side wall self-stabilizing system applied to deep foundation pit support and a construction method thereof, which comprises two water-stopping curtains, support piles, concrete slope protection, a plurality of soil nails arranged in the concrete slope protection, a corbel arranged at the top of the support piles, and a wet lean concrete layer arranged at the inner side of the support piles, further comprises a box culvert of a lower passageway, a plurality of rows of additional support steels arranged at intervals are arranged in the structural steel of the box culvert of the lower passageway, and the box culvert of the lower passageway comprises a lower passageway bottom plate, a lower passageway top plate and two lower passageway side walls; one end of the additional support steel is inserted into the lower passageway side wall, the other end of the additional support steel is arranged through the vertical side wall section of the lower passageway bottom plate, and is bent and inserted into the horizontal bottom wall section of the lower passageway bottom plate, so as to ensure the bending bearing capacity of the lower passageway bottom plate; thus, the existing technology of the inverted support structure can be replaced, the pressure of the side wall panel is smaller, the rigidity and the anti-seismic capacity of the overall structure are improved, and the construction period can be obviously shortened.

The utility model discloses an underground box culvert structure which comprises an underground groove and a box culvert, the box culvert is placed at the bottom of the underground groove, a first backfill material layer for burying the box culvert is backfilled at the bottom of the underground groove, and a second backfill material layer and a third backfill material layer are alternately backfilled on the underground groove above the first backfill material layer. The third backfill material layer comprises a plurality of tires, the tires are laid on the second backfill material layer, every two adjacent tires are fixedly connected through a connecting assembly, the tires are connected into a whole, and the interiors and the exteriors of the tires are filled with third backfill materials. According to the underground box culvert structure, the pressure applied to the box culvert is reduced, the box culvert is prevented from being damaged by pressing, the service life of the box culvert is prolonged, and the maintenance cost of the box culvert is reduced.

The utility model belongs to the technical field of prefabricated box culverts, and particularly relates to a prefabricated box culvert. Comprising a box culvert body, the left end of the box culvert body is of a left-low right-high inclined structure, and the right end and the left end of the box culvert body are parallel to each other; an inner connecting frame is fixed to the left end of the box culvert body and is obliquely distributed along the left end of the box culvert body, an outer connecting frame capable of being arranged on the inner connecting frame in a sleeving mode is fixed to the right end of the box culvert body, the outer connecting frame is of an n-shaped structure, clamping blocks are fixed to the front side wall and the rear side wall of the inner connecting frame, and clamping grooves allowing the clamping blocks to enter are formed in the inner side wall of the outer connecting frame. According to the box culvert, the left end and the right end of the box culvert body are arranged to be the inclined planes, so that when the box culvert body and the box culvert body are in butt joint, one box culvert body is in butt joint from top to bottom, and after the inner connecting frame and the outer connecting frame are aligned and positioned, alignment and connection are completed conveniently, the butt joint difficulty between the two box culvert bodies is reduced to a certain degree, and the overall construction efficiency is improved.

The utility model discloses an overflow type immersed roadbed structure. A roadbed main body is composed of backfilled gravelly soil and slope protection; a roadbed backfilling area is arranged below the pavement structure layer, the roadbed backfilling area is composed of backfilled gravelly soil, and an overflow channel is arranged on the geological condition stable side of the roadbed; a high-pressure jet grouting diaphragm wall is arranged in the center of the roadbed, and the bottom of the high-pressure jet grouting diaphragm wall extends to bed rock; by means of the design of the overflow channel, it is guaranteed that flood can be smoothly discharged under the condition of the designed flood level, the situation that the roadbed is damaged due to the fact that the flood overflows the dam is avoided, the overflow channel foundation is reinforced through consolidation grouting, and it is guaranteed that the overflow dam structure is stable and safe; through the design of the high-pressure jet grouting diaphragm wall and the gabion protection slope, the stability of the roadbed under the condition of high water level is ensured, and the risks of leakage and landslide are reduced.

The utility model relates to water conveyance engineering technical field, concretely relates to a long distance tunnel water conveyance device. The device includes import box culvert section, water conveyance tunnel section and pressureless tunnel section, import box culvert section, water conveyance tunnel section and pressureless tunnel section are all horizontal section, the import shaft is arranged between import box culvert section and water conveyance tunnel section, the top of import box culvert section is communicated with import shaft, and one end of water conveyance tunnel section is communicated with the bottom of import shaft, the export shaft is arranged between water conveyance tunnel section and pressureless tunnel section, the other end of water conveyance tunnel section is communicated with the bottom of export shaft, and pressureless tunnel section is communicated with the top of export shaft. The utility model can realize tunnel section smooth full pipe, greatly restrain the difficult to predict clear full flow separation point movement, intense pressure pulsation and water flow turbulence in water filling mode.

Disclosed are geotextiles configured for moisture management. In exemplary embodiments, a geotextile comprises a plurality of structural elements including one or more yarns, cords, or filament bundles arranged to form a fabric or grid. At least a portion of the structural elements include capillary-active surfaces and / or are configured to promote capillary wicking of moisture along at least one direction of the geotextile. At least a portion of the structural elements include internal void regions configured to maintain hydraulic conductivity under compaction. The geotextile is operable for providing dual-mode moisture transport through both capillary wicking and hydraulic flow thereby allowing for removal and redistribution of water from pavement layers and subgrade soils.

The invention belongs to the technical field of road buried glass fiber reinforced plastic mortar pipe culvert construction, and particularly relates to a solid waste resourceful treatment method for double-row glass fiber reinforced plastic mortar pipe construction, which comprises the following steps of: vertically excavating a foundation pit, supporting by using Larsen U-shaped steel sheet piles, compacting a base, and replacing and filling undesirable soil with natural gravel soil. After the base is accepted and accepted, an inverted filter layer is laid, and gravels of 20 cm are laid. Reinforced concrete end and middle prefabricated blocks are prefabricated in a factory, and asbestos cushion layers are attached into the prefabricated blocks. And the elevation and the axis of the pipe culvert are accurately measured, a temporary weight is arranged in the pipe culvert to prevent floating, the double-row glass fiber reinforced plastic sand inclusion pipe culvert is hoisted in place, and cushion layer attachment is checked. The method comprises the following steps: mixing and pouring mixed slurry consisting of solid waste ash and quick-hardening cement by using special equipment, backfilling the mixed slurry until the elevation of an excavated pavement is below 30cm, then backfilling slag to the excavated surface of the roadbed, and compacting by using a light road roller. And entering a curing period after compaction. According to the method, solid waste resource utilization with the liquid fly ash and the furnace slag as the core is achieved, and the construction efficiency is remarkably improved.

This invention discloses a method for underpinning culvert foundations in roadbeds, relating to the field of civil engineering technology. The method includes the following steps: cleaning the culvert to expose the culvert foundation; installing support components on both sides of the culvert foundation to support the cover plate; breaking the bottom slab in the middle of the culvert and re-pouring reinforced concrete at the bottom slab location; installing support components on the re-pouring reinforced concrete to support the cover plate; breaking the bottom slabs on both sides of the culvert and under the support walls, and then re-pouring reinforced concrete to replace the original bottom slabs; after the re-pouring reinforced concrete reaches its design strength, removing the support components inside the culvert to restore its drainage function. The aforementioned method for underpinning culvert foundations is applicable to natural foundation underpinning of frame structures. During the underpinning process, the building can be used normally without speed restrictions, which helps reduce the impact of the underpinning on the surrounding area.

The invention provides a municipal road subgrade drainage groove laying mechanism, and belongs to the field of municipal roads, the municipal road subgrade drainage groove laying mechanism comprises a laying trolley, the right side of the laying trolley is provided with an excavating mechanism, the rear side of the excavating mechanism is provided with a shaping mechanism, the laying trolley is connected with a grooving plough in an up-down sliding mode, and prefabricated drainage grooves are formed in an upper clamping rod and a lower clamping rod; the double-crank mechanism comprises a supporting plate, the upper end face of the supporting plate is fixedly connected with a protruding block, the electric push rod drives the grooving plough to move downwards by a proper height to accurately control the digging depth and the digging size, the rotating speed and time of the motor are controlled to control the folding and unfolding angle of the shaping plate, and grooves of different depths are flattened; the lower clamping rod loosens the prefabricated drainage groove, so that the prefabricated drainage groove naturally falls into the drainage ditch, the groove cover is conveyed to the upper side of the prefabricated drainage groove to be installed through circular rotation of the supporting plate and cooperation with the protruding block, the groove cover retracts back to the original position after installation is completed, the mechanical complexity is reduced, and the operation convenience is improved.

This invention discloses a method for maintaining a temporary access road when an elevated trestle bridge passes under an existing railway frame bridge. The existing railway frame bridge is a double-span drainage culvert. The method includes: constructing a traffic culvert on one side of the double-span drainage culvert, while retaining the other side as a drainage culvert; constructing a temporary steel bridge within the traffic culvert to form a construction passage across the bottom slab of the existing frame culvert; connecting the temporary steel bridge with the passages on both sides of the double-span drainage culvert to form a temporary access road; maintaining clearance between the temporary steel bridge and the bottom of the traffic culvert; and spacing between the temporary steel bridge and the two sides of the traffic culvert; the temporary steel bridge is a single-lane bridge with height and width restrictions. This invention enables low-clearance crossing while ensuring smooth drainage during the flood season.

The utility model relates to the field of road drainage, in particular to a roadbed blind ditch easy to assemble. The device comprises a base, a water seepage diversion assembly and a partition plate, the base is provided with an upward placing groove and a clamping groove, and the placing groove is an arc-shaped groove; the water seepage flow guide assemblies are connected in the length direction of the base, each water seepage flow guide assembly comprises a corrugated pipe, a water permeable layer and an outer frame which are sequentially connected from inside to outside, each corrugated pipe comprises an upper pipe part and a lower pipe part which are distributed up and down and detachably or integrally connected, and each upper pipe part and each lower pipe part are each of a semi-annular structure; a plurality of water permeable holes distributed in a fan shape are formed in the upper portion and the middle of the corrugated pipe, the lower pipe part is placed in the containing groove, positioning table parts erected on the base are arranged on the two sides of the lower pipe part in the horizontal direction, connecting plate parts connected with the positioning table parts are arranged on the two sides of the upper pipe part in the horizontal direction, and a plurality of water seepage holes are distributed in the outer frame. The arrangement direction of the corrugated pipes can be positioned, effective water seepage and drainage effects can be guaranteed, and the distribution directions of the water permeable holes in the corrugated pipes are uniform.

The invention discloses a flow construction method of a modularized intelligent synchronous sliding trolley system for a soft-foundation long linear water conveying tank culvert. The flow construction method comprises the following specific steps that firstly, construction pre-preparation is conducted; 2, a trolley synchronous sliding unit is built; 3, template unit assembling and posture calibration; 4, system rechecking and pre-compensation before pouring; 5, first-time concrete pouring is conducted; sixthly, synchronous sliding construction is conducted; and 7, line production circulation is conducted, specifically, the step 6 is repeated, and concrete pouring and trolley synchronous sliding of all construction sections are completed in sequence. The construction efficiency and precision of the soft foundation long linear water conveying tank culvert are improved, the construction risk is reduced, and good practicability and popularization value are achieved.

The application relates to the technical field of water conservancy projects, and discloses a large-section prefabricated and assembled box culvert structure suitable for cold and arid areas and a construction method, a top plate unit comprises a plurality of sequentially connected first prefabricated components, the first prefabricated components are in overall H-shaped structures, and the two sides of the first prefabricated components are provided with first joints at bottom ends; a bottom plate unit comprises a plurality of sequentially connected third prefabricated components, the two sides of the third prefabricated components are provided with third joints; a side wall unit comprises a plurality of sequentially connected second prefabricated components, the second prefabricated components are in overall L-shaped structures; one side end of the second prefabricated component is provided with a second upper joint matched with the first joint, and the other side end is provided with a second lower joint matched with the third joint. The box culvert is split into a plurality of H-shaped first prefabricated components, a plurality of L-shaped second prefabricated components and a plurality of third prefabricated components, the size and weight of a single prefabricated component are reduced, and the engineering implementation difficulties of the large-section box culvert in the prefabrication, transportation and on-site hoisting processes are solved.