A large-diameter box culvert multi-pipeline bridge repair system

Abstract

The present invention discloses a large-diameter box culvert multi-pipeline bridge repair system, comprising two sections of horizontally arranged box culverts, joint assemblies are respectively arranged on the opposite end faces of the two box culverts, the joint assemblies are connected to the corresponding box culverts, a group of liquid holes are arranged on the joint assembly, the liquid holes are communicated with the box culvert, each of the liquid holes is respectively connected to a transfer elbow, and drainage fabric belts are respectively connected between the corresponding transfer elbows in the two joint assemblies. Beneficial effects of the present invention: the joint assembly converts the large-section box culvert flow channel into multiple small-section drainage fabric belt flow channels, which has the effect of breaking the whole into parts, overcomes the problem of insufficient strength of the large-diameter fabric belt, and at the same time minimizes the loss of the cross-sectional area of ​​the flow channel, is convenient for construction, and can quickly repair the damaged box culvert in an emergency.

Description

Technical Field

[0001] The invention belongs to the technical field of box culvert repair, and in particular relates to a large-diameter box culvert multi-pipeline bridge repair system for a multi-pipeline repair system. Background Art

[0002] During the operation of the urban sewage treatment system, affected by factors such as aging of facilities, changes in geological environment and construction, box culvert expansion joints are often dislocated and cracked, affecting the normal operation of the pipe network system and posing great safety hazards. Large-diameter box culverts are often used on main drainage pipelines. They are difficult to repair when damaged or broken, and long-term water outages are generally not allowed for repair. Therefore, it is very necessary to quickly establish an emergency drainage channel as a temporary replacement for the damaged part. The applicant has developed a drainage repair technology and repair connection equipment for emergency rescue of drainage pipes in the early stage. It has been successfully applied in the repair of drainage pipes with small and medium diameters, but there are still difficulties for large-diameter drainage box culverts. This is because, limited by the current cloth belt material and molding processing technology, the expansion coefficient of the large-diameter water diversion cloth belt is too large, the pulling force is too small, and the flange connection part reaches the force limit and is broken. Under the premise that there is no bracket or protective frame under the cloth belt, the cloth belt is subjected to force in the direction of gravity and cannot withstand a large volume of water. Therefore, at present, only smaller-diameter water diversion cloth belts can be used to repair large-diameter box culverts, and there is a challenge in how to ensure the water flow of the repair structure. In addition, box culverts are generally high above the ground, and their repair involves high-altitude operations with complex procedures, so a reasonable design of the repair structure is required to facilitate construction and installation. Summary of the invention

[0003] In view of this, in order to solve the above problems, the purpose of the present invention is to provide a large-diameter box culvert multi-pipeline bridge repair system.

[0004] The technical solution is as follows:

[0005] A large-diameter box culvert multi-pipeline bridge repair system, comprising two horizontally arranged box culverts, the key of which is that joint assemblies are respectively arranged on the opposite end faces of the two box culverts, the joint assemblies are connected to the corresponding box culverts, a group of liquid holes are arranged on the joint assembly, the liquid holes are communicated with the box culverts, and each of the liquid holes is respectively connected to a transfer elbow;

[0006] Drainage tapes are respectively connected between the corresponding transfer elbows in the two joint assemblies.

[0007] With the above design, the joint assembly converts the large-section box culvert flow channel into multiple small-section drainage cloth flow channels, which has the effect of breaking the whole into parts, overcoming the problem of insufficient strength of large-diameter cloth belts, while minimizing the loss of cross-sectional area of ​​the flow channel. The construction is convenient and the damaged box culvert can be quickly repaired in an emergency.

[0008] As a preferred technical solution, the joint assembly includes a box culvert butt joint and a butt joint stabilizing seat;

[0009] The box culvert joint comprises a vertically arranged end face abutment plate, the two side surfaces of which are respectively abutment surface and a free surface, the abutment surface abuts against the corresponding box culvert end face, and the free surface is connected to the transfer elbow on one side;

[0010] The end surface abuts against the plate and is provided with the liquid passage hole;

[0011] The butt joint stabilizing seat is fixed on the corresponding box culvert, the butt joint stabilizing seat is parallel and directly opposite to the box culvert butt joint, and an adjustable tensioning mechanism is connected between the two.

[0012] With the above design, the box culvert joint is easy to install.

[0013] As a preferred technical solution, the two ends of the above-mentioned transfer elbow are respectively a support plate end and a cloth belt end, wherein the support plate end is connected to the end surface support plate, and the cloth belt end faces downward;

[0014] The cloth tape end of the upper transition elbow passes over the lower transition elbow in the horizontal direction;

[0015] The two ends of the drainage fabric belt are respectively connected to the corresponding ends of the transfer elbow fabric belt in the two joint assemblies.

[0016] With the above design, the horizontal sections of the transfer elbows have different lengths, which is convenient for arranging multiple transfer elbows. Since the cloth belt is a flexible pipe, the cloth belt end of the transfer tube faces downward, which is convenient for connecting the cloth belt and ensures that the connecting section of the cloth belt is mainly used to bear tension, which is beneficial to maintaining the connection strength.

[0017] As a preferred technical solution, the abutment plate end of the above-mentioned transfer elbow is inserted into the corresponding liquid passage hole;

[0018] Anti-slip parts are respectively arranged at the abutting plate ends of the transfer elbow, and after the abutting plate ends pass through the liquid-passing holes from the free surface, the anti-slip parts are hung on the abutting surface;

[0019] A fixed flange ring is arranged around the liquid hole on the free surface, and the fixed flange ring is arranged coaxially with the liquid hole. A butt flange ring is fixedly sleeved outside the transfer elbow, and the butt flange ring is sealingly connected to the fixed flange ring.

[0020] With the above design, the insertion end is inserted into the liquid hole to facilitate the guide assembly, and the anti-dropping part is hung on the abutment plate to play a preliminary stabilizing role and facilitate the subsequent flange connection.

[0021] As a preferred technical solution, the anti-dropping member is a claw, which includes a rotating rod, one end of which is detachably provided with an anti-dropping block, and the other end of which is provided with a limiting protrusion;

[0022] A strip notch is provided at the abutting plate end of the transfer elbow, and the strip notch is arranged along the axial direction of the abutting plate end. The rotating rod is arranged in the strip notch, and the outer side of the rotating rod is flush with the outer wall of the abutting plate end. The middle part of the rotating rod is hinged with the side wall of the strip notch. The rotating rod rotates in the radial plane of the abutting plate end. The anti-dropping block is arranged at one end of the rotating rod corresponding to the abutting surface, and the anti-dropping block extends outward along the radial direction of the abutting plate end.

[0023] The limiting protrusion is located on the outer side of the rotating rod, and the limiting protrusion abuts against the inner wall of the fixing flange ring.

[0024] With the above design, during the process of the insertion end extending through the liquid hole, the anti-slip block end of the claw can be rotated to the inside of the insertion end, while the limiting protrusion end is tilted outward without affecting the insertion of the insertion end. When the insertion end is extended to a certain distance, the limiting protrusion contacts the fixed flange ring and rotates inward, causing the anti-slip block of the claw to rotate outward. The insertion end continues to extend, and the anti-slip block gradually extends through the liquid hole and is thus hung on the abutment surface. Due to the limiting effect of the fixed flange ring, the anti-slip block has a tendency to extend outward, thereby maintaining stability and preventing the adapter elbow from slipping out.

[0025] As a preferred technical solution, a reinforcement ring is provided on the edge of the liquid passage hole, the reinforcement ring is fixedly arranged on the abutment surface, the reinforcement ring is arranged coaxially with the liquid passage hole, and a clamping notch is provided on the end surface of the reinforcement ring facing away from the abutment surface, and the anti-dropping block is embedded in the clamping notch;

[0026] The surface of the anti-dropping block facing the abutting surface is an inclined surface, and the engaging notch is adapted to the anti-dropping block.

[0027] With the above design, the reinforcing ring can enhance the local strength of the liquid hole. At the same time, the provision of the engagement notch is conducive to maintaining the stability of the anti-dropping block, preventing the transfer elbow from rotating, and facilitating subsequent fastening connection through the flange.

[0028] As a preferred technical solution, the middle part of the end surface abutting plate is a flow channel area, the abutting surface surrounding the flow channel area forms an abutting area, and the upper part of the abutting area and the end surface abutting plates outside the two sides form a door-shaped connection area;

[0029] The liquid holes are densely arranged in the flow channel area;

[0030] The abutment area abuts against the corresponding end surface of the box culvert;

[0031] The butt joint stabilizing seat is in a door shape, and is parallel to and directly opposite to the connecting area, with the adjustable tensioning mechanism being connected between the two.

[0032] With the above design, the flow channel area corresponds to the inner cavity of the box culvert, and the liquid holes are densely arranged in the flow channel area. The number of liquid holes can be as large as possible, so that the loss of flow channel size is minimized after the box culvert joint conversion.

[0033] As a preferred technical solution, the above-mentioned butt joint stabilizing seat comprises a seat strip, and the two ends of the seat strip are bent in the same direction to form the butt joint stabilizing seat in a door shape;

[0034] The seat bar comprises a base plate and a tension plate arranged parallel to the connection area, the inner side of the base plate is close to the outer wall of the culvert, a base hole is passed through the base plate, an expansion bolt is passed through the base hole, and the expansion bolt fixes the base plate to the outer wall of the culvert;

[0035] The tensioning plate is connected to the outer side surface of the base plate, and the tensioning plate is perpendicular to the base plate;

[0036] At least two adjustable tensioning mechanisms are distributed in parallel along the direction of the tensioning plate.

[0037] With the above design, the butt joint stabilizing seat is put on the box culvert from above, which is convenient for installation and fixation. The butt joint stabilizing seat has a simple structure and is fastened to the end of the box culvert through multiple adjustable tensioning mechanisms.

[0038] As a preferred technical solution, a plurality of abutment plate holes are formed through the connection area, and all of the abutment plate holes are distributed along the direction of the connection area;

[0039] The tensioning plate is provided with tensioning plate holes, and the tensioning plate holes are directly opposite to the abutting plate holes one by one;

[0040] The adjustable tensioning mechanism is a basket bolt, and the two ends of the basket bolt are respectively inserted into the abutment plate hole and the tensioning plate hole.

[0041] By adopting the above design, multiple basket bolts are connected to make all parts of the end face abutment plate tightly abut against the end face of the box culvert.

[0042] As a preferred technical solution, the tensioning plate is connected to the middle of the outer surface of the substrate, and the base holes are respectively distributed on the substrate on both sides of the tensioning plate;

[0043] Reinforcement ribs are connected between the two side surfaces of the tensioning plate and the base plate respectively.

[0044] The above design is adopted to improve the strength and installation firmness of the joint stabilizing seat itself.

[0045] Compared with the prior art, the present invention has the following beneficial effects: the joint assembly converts a large-section box culvert flow channel into multiple small-section drainage cloth belt flow channels, achieving the effect of breaking the whole into parts, overcoming the problem of insufficient strength of large-diameter cloth belts, while minimizing the loss of cross-sectional area of ​​the flow channel, facilitating construction, and enabling rapid emergency repair of damaged box culverts. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a structural schematic diagram of the present invention;

[0047] Figure 2 is a structural schematic diagram of a joint assembly;

[0048] Figure 3 It is a structural schematic diagram of the end surface abutting the plate;

[0049] Figure 4 This is a schematic diagram of the connection between the joint assembly and the box culvert;

[0050] Figure 5 It is a schematic diagram of the installation position of the end surface abutment plate;

[0051] Figure 6 It is a structural schematic diagram of the butt joint stabilizing seat;

[0052] Figure 7 for Figure 6 Left view of

[0053] Figure 8 It is a structural schematic diagram of the box culvert joint;

[0054] Fig. 9 for Figure 8 Left view of

[0055] Fig.10 for Figure 8 Right view of;

[0056] Fig.11 for Fig.10 Enlarged view of the middle m part;

[0057] Fig.12 for Fig.11 A cross-sectional view of

[0058] Fig.13 for Fig.12 Schematic diagram after removing the transfer elbow. DETAILED DESCRIPTION

[0059] The present invention is further described below in conjunction with embodiments and drawings.

[0060] like Figure 1As shown, a large-diameter box culvert multi-pipeline bridge repair system comprises two horizontally arranged box culverts a, and joint assemblies are respectively arranged on the opposite end faces of the two box culverts a, and the joint assemblies are connected to the corresponding box culverts a. The joint assemblies are provided with a group of liquid holes 111, and the liquid holes 111 are communicated with the box culvert a, and each of the liquid holes 111 is respectively connected to a transfer elbow 120. Drainage fabrics 400 are respectively connected between the corresponding transfer elbows 120 in the two joint assemblies.

[0061] like Figures 2 to 5 As shown, the joint assembly includes a box culvert joint 100 and a joint stabilizing seat 300. The box culvert joint 100 includes a vertically arranged end face abutment plate 110, the two side surfaces of which are abutment surface and free surface, respectively. The abutment surface abuts against the corresponding end face of the box culvert a, and one side of the free surface is connected to the transfer elbow 120. The end face abutment plate 110 is provided with the liquid-passing hole 111. The joint stabilizing seat 300 is fixed on the corresponding box culvert a, and the joint stabilizing seat 300 is parallel to and directly opposite to the box culvert joint 100, and an adjustable tensioning mechanism 200 is connected between the two.

[0062] The two ends of the transfer elbow 120 are respectively abutment plate end and a cloth belt end, wherein the abutment plate end is connected to the end surface abutment plate 110, and the cloth belt end faces downward. The cloth belt end of the transfer elbow 120 located above horizontally passes over the transfer elbow 120 located below it. The two ends of the drainage cloth belt 400 are respectively connected to the cloth belt ends of the corresponding transfer elbows 120 in the two joint assemblies.

[0063] like Figure 3 As shown, the middle part of the end surface abutting plate 110 is the flow channel area 110a, and the liquid holes 111 are closely arranged in the flow channel area 110a. The size of all the liquid holes 111 is the same. For the determined size of the liquid holes 111, the liquid holes 111 are closely arranged in the flow channel area, which means that the liquid holes 111 are arranged in the largest number. For the convenience of processing and installation, a rectangular array arrangement can be selected. For example, if a maximum of m liquid holes 111 can be arranged in the horizontal direction of the flow channel area and a maximum of n liquid holes 111 can be arranged in the vertical direction, m×n liquid holes 111 (m and n are both positive integers) are set in the flow channel area.

[0064] A support plate 160 is provided on the abutting surface corresponding to the lower edge of the flow channel area 110a. The support plate 160 is perpendicular to the end surface abutting plate 110. The support plate 160 extends into and falls on the bottom wall of the culvert a. The abutting surface surrounding the flow channel area 110a forms an abutting area 110b. The abutting area 110b has the same shape as the end surface of the broken end of the culvert a. The abutting area 110b is attached to the end surface of the broken end of the culvert a. The upper part of the abutting area 110b and the end surface abutting plates 110 on both sides of the outside form a door-shaped connecting area 110c.

[0065] The butt joint stabilizing seat 300 is door-shaped, and the butt joint stabilizing seat 300 is parallel to and directly opposite to the connecting area 110c, and the adjustable tensioning mechanism 200 is connected between the two.

[0066] like Figure 4 , 5 As shown in Figure 6, the butt joint stabilizing seat 300 includes a seat strip, the two ends of which are bent in the same direction to form a door-shaped butt joint stabilizing seat 300. The seat strip includes a base plate 310 and a tension plate 320 arranged parallel to the connection area 110c. The inner side of the base plate 310 is in contact with the outer wall of the box culvert a. A base hole 311 is passed through the base plate 310. An expansion bolt is passed through the base hole 311. The expansion bolt fixes the base plate 310 to the outer wall of the box culvert a. The tension plate 320 is connected to the outer side of the base plate 310, and the tension plate 320 is perpendicular to the base plate 310. At least two adjustable tensioning mechanisms 200 are distributed in parallel along the direction of the tension plate 320.

[0067] A plurality of abutment plate holes 170 are formed through the connection area 110c, and all the abutment plate holes 170 are distributed along the direction of the connection area 110c. A tension plate hole 321 is formed through the tension plate 320, and the tension plate holes 321 are aligned with the abutment plate holes 170 one by one. The adjustable tensioning mechanism 200 is a turnbuckle bolt, and the two ends of the turnbuckle bolt are respectively inserted into the abutment plate hole 170 and the tension plate hole 321.

[0068] The tension plate 320 is connected to the middle of the outer surface of the base plate 310, and the base holes 311 are respectively distributed on the base plate 310 on both sides of the tension plate 320. Reinforcement ribs 330 are respectively connected between the two sides of the tension plate 320 and the base plate 310.

[0069] like Figures 8 to 11As shown, the abutment plate end of the transfer elbow 120 is inserted into the corresponding liquid passage hole 111. Anti-slipping parts 130 are respectively provided at the abutment plate ends of the transfer elbow 120. After the abutment plate ends pass through the liquid passage hole 111 from the free surface, the anti-slipping parts 130 are hung on the abutment surface. A fixed flange ring 150 is provided on the free surface around the liquid passage hole 111. The fixed flange ring 150 is provided on the same center line as the liquid passage hole 111. A docking flange ring 140 is fixedly sleeved outside the transfer elbow 120. The docking flange ring 140 is sealed and connected to the fixed flange ring 150.

[0070] like Fig.12 As shown, the anti-dropping member 130 is a claw, which includes a rotating rod 131, one end of which is detachably provided with an anti-dropping block 132, and the other end of which is provided with a limiting protrusion 133. A strip-shaped notch is provided at the abutting plate end of the transfer elbow 120, and the strip-shaped notch is provided along the axial direction of the abutting plate end. The rotating rod 131 is provided in the strip-shaped notch, and the outer side of the rotating rod 131 is flush with the outer wall of the abutting plate end. The middle part of the rotating rod 131 is hinged with the side wall of the strip-shaped notch. The rotating rod 131 rotates in the radial plane of the abutting plate end, and the anti-dropping block 132 is provided at one end of the rotating rod 131 corresponding to the abutting surface, and the anti-dropping block 132 extends outward along the radial direction of the abutting plate end. The limiting protrusion 133 is located at the outer side of the rotating rod 131 and smoothly transitions thereto. The limiting protrusion 133 abuts against the inner wall of the fixing flange ring 150 .

[0071] like Fig.12 and 13 As shown, a reinforcement ring 112 is provided on the edge of the liquid passage hole 111, the reinforcement ring 112 is fixedly provided on the abutting surface, the reinforcement ring 112 is provided coaxially with the liquid passage hole 111, a clamping notch 113 is provided on the end surface of the reinforcement ring 112 facing away from the abutting surface, and the anti-dropping block 132 is embedded in the clamping notch 113. The surface of the anti-dropping block 132 facing the abutting surface is an inclined surface, and the clamping notch 113 is adapted to the anti-dropping block 132.

[0072] The adapter elbow 120 and the end face abutment plate 110 are installed as follows: the end of the claw where the anti-dropout block 132 is located is rotated inward, and then the cloth tape end of the adapter elbow 120 is kept oriented, and the abutment plate end is inserted into the liquid passage hole 111. When it reaches a certain position, the limiting protrusion 133 contacts the inner wall of the fixed flange ring 150, and the abutment plate end continues to extend, and the limiting protrusion 133 of the claw continues to rotate inward, while the anti-dropout block 132 end rotates outward until the anti-dropout block 132 slides out and is stuck in the engagement notch 113 of the reinforcement ring 112. At this time, the limiting protrusion 133 is limited in the fixed flange ring 150, and the initial connection between the adapter elbow 120 and the end face abutment plate 110 is achieved. Finally, the docking flange ring 140 is sealed and connected to the fixed flange ring 150.

[0073] The process of using the above-mentioned emergency repair system to construct a large-diameter box culvert is as follows: the damaged section of the box culvert is cut off to form two exposed end faces of the box culvert a. The butt joint stabilizing seat 300 is fixed on each end face of the box culvert a, and then the box culvert butt joint 100 is set on the end face of the box culvert a. To ensure the sealing effect, a sealing ring is set between the abutment area 110b of the end face abutment plate 110 and the end face of the box culvert a. The box culvert butt joint 100 can be hoisted and installed to the end of the box culvert a after the ground assembly is completed, and then the box culvert butt joint 100 is pressed against the end face of the box culvert a using a basket bolt. Alternatively, the end face abutment plate 110 is first installed on the end face of the box culvert a, and then the transition elbows 120 are installed one by one. Finally, a plurality of drainage fabric strips 400 are connected between the corresponding transition elbows 120 of the two box culvert butt joints 100. The drainage tape 400 and the tape end of the transfer elbow 120 can be connected by a flange or an existing quick connector. By creatively using a multi-pipeline bridge repair system, the strength requirements of the components are reduced, and a large-diameter box culvert can be quickly repaired.

[0074] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A large-diameter box culvert multi-pipeline bridge repair system, comprising two horizontally arranged box culverts (a), characterized in that: A joint assembly is respectively arranged on the opposite end surfaces of the two box culverts (a), the joint assembly is connected to the corresponding box culvert (a), a group of liquid holes (111) are arranged on the joint assembly, the liquid holes (111) are communicated with the box culvert (a), and each of the liquid holes (111) is respectively connected to a transfer elbow (120); A drainage tape (400) is respectively connected between the corresponding transition elbows (120) in the two joint assemblies; The joint assembly comprises a box culvert joint (100) and a joint stabilizing seat (300); The box culvert joint (100) comprises an end surface abutting plate (110) arranged vertically, the two side surfaces of the end surface abutting plate (110) being abutting surfaces and free surfaces respectively, the abutting surfaces being abutted against the corresponding end surfaces of the box culvert (a), and the transition elbow (120) being connected to one side of the free surface; The end surface abutting plate (110) is provided with the liquid passage hole (111); The butt joint stabilizing seat (300) is fixed on the corresponding box culvert (a), the butt joint stabilizing seat (300) is parallel and directly opposite to the box culvert butt joint (100), and an adjustable tensioning mechanism (200) is connected between the two; The two ends of the transfer elbow (120) are respectively a support plate end and a cloth belt end, wherein the support plate end is connected to the end surface support plate (110), and the cloth belt end faces downward; The cloth tape end of the upper transition elbow (120) passes over the lower transition elbow (120) in the horizontal direction; The two ends of the drainage tape (400) are respectively connected to the corresponding tape ends of the transfer elbow (120) in the two joint assemblies; The abutting plate end of the transfer elbow (120) is inserted into the corresponding liquid passage hole (111); Anti-slipping parts (130) are respectively arranged at the abutting plate ends of the transfer elbow (120); after the abutting plate ends pass through the liquid passage hole (111) from the free surface, the anti-slipping parts (130) are hung on the abutting surface; A fixed flange ring (150) is arranged on the free surface around the liquid hole (111), and the fixed flange ring (150) is arranged coaxially with the liquid hole (111); a docking flange ring (140) is fixedly sleeved outside the transfer elbow (120), and the docking flange ring (140) is sealedly connected to the fixed flange ring (150); The anti-dropping member (130) is a claw, which comprises a rotating rod (131), one end of which is detachably provided with an anti-dropping block (132), and the other end of which is provided with a limiting protrusion (133); A strip-shaped notch is provided at the abutting plate end of the transfer elbow (120), and the strip-shaped notch is arranged along the axial direction of the abutting plate end. The rotating rod (131) is arranged in the strip-shaped notch, and the outer side of the rotating rod (131) is flush with the outer wall of the abutting plate end. The middle part of the rotating rod (131) is hinged to the side wall of the strip-shaped notch. The rotating rod (131) rotates in the radial plane of the abutting plate end. The anti-slip block (132) is arranged at one end of the rotating rod (131) corresponding to the abutting surface, and the anti-slip block (132) extends outward along the radial direction of the abutting plate end. The limiting protrusion (133) is located on the outer side of the rotating rod (131), and the limiting protrusion (133) abuts against the inner wall of the fixing flange ring (150); A reinforcement ring (112) is arranged on the edge of the liquid passage hole (111), the reinforcement ring (112) is fixedly arranged on the abutment surface, the reinforcement ring (112) and the liquid passage hole (111) are arranged coaxially, a clamping notch (113) is provided on the end surface of the reinforcement ring (112) facing away from the abutment surface, and the anti-dropping clamping block (132) is embedded in the clamping notch (113); The surface of the anti-dropping block (132) facing the abutting surface is an inclined surface, and the engaging notch (113) is adapted to the anti-dropping block (132); The middle part of the end surface abutting plate (110) is a flow channel area, the abutting surface surrounding the flow channel area forms an abutting area, and the upper part of the abutting area and the end surface abutting plate (110) outside the two sides form a door-shaped connection area; The liquid passage holes (111) are densely arranged in the flow channel area; The abutment area abuts against the corresponding end surface of the box culvert (a); The butt joint stabilizing seat (300) is door-shaped, and the butt joint stabilizing seat (300) is parallel and opposite to the connecting area, and the adjustable tensioning mechanism (200) is connected between the two.

2. According to claim 1, a large-diameter box culvert multi-pipeline bridge repair system is characterized by: The butt joint stabilizing seat (300) comprises a seat strip, the two ends of which are bent in the same direction to form a door-shaped butt joint stabilizing seat (300); The seat bar comprises a base plate (310) and a tension plate (320) arranged parallel to the connection area, the inner side surface of the base plate (310) is in contact with the outer wall of the box culvert (a), a base hole (311) is passed through the base plate (310), an expansion bolt is passed through the base hole (311), and the expansion bolt fixes the base plate (310) to the outer wall of the box culvert (a); The tensioning plate (320) is connected to the outer side surface of the base plate (310), and the tensioning plate (320) is perpendicular to the base plate (310); At least two adjustable tensioning mechanisms (200) are distributed in parallel along the direction of the tensioning plate (320).

3. A large-diameter box culvert multi-pipeline bridge repair system according to claim 2, characterized in that: A plurality of abutment plate holes (170) are formed through the connection area, and all of the abutment plate holes (170) are distributed along the direction of the connection area; A tensioning plate hole (321) is formed through the tensioning plate (320), and the tensioning plate hole (321) is directly opposite to the abutting plate hole (170) one by one; The adjustable tensioning mechanism (200) is a turnbuckle bolt, and two ends of the turnbuckle bolt are respectively inserted into the abutment plate hole (170) and the tensioning plate hole (321).

4. A large-diameter box culvert multi-pipeline bridge repair system according to claim 2, characterized in that: The tensioning plate (320) is connected to the middle part of the outer surface of the base plate (310), and the base holes (311) are respectively distributed on the base plate (310) on both sides of the tensioning plate (320); Reinforcement ribs (330) are respectively connected between the two side surfaces of the tensioning plate (320) and the base plate (310).

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