A corrugated steel plate lining reinforcing structure for a stone arch bridge

Abstract

This application relates to a corrugated steel plate lining reinforcement structure for stone arch bridges, belonging to the technical field of old bridge and culvert reinforcement. It includes an inner lining comprising multiple corrugated plates assembled and fixed to each other. An adjustment assembly is provided between the inner walls of the lining and the culvert. The adjustment assembly includes a positioning rod, an adjusting pipe, and a connecting rod. One end of the positioning rod is fixedly connected to the inner wall of the culvert, and the other end is threadedly connected to one end of the adjusting pipe. One end of the connecting rod is fixedly connected to the inner lining, and the other end is threadedly connected to the end of the adjusting pipe away from the positioning rod. The thread directions of the positioning rod and the adjusting pipe are opposite to those of the connecting rod and the adjusting pipe. Along the length of the culvert, a baffle is provided at the end of the inner lining. A flange is provided at the end of the baffle near the inner wall of the culvert, and the flange is fixedly connected to the inner wall of the culvert. A connecting assembly for mutual limiting and fixing is provided between the baffle and the connecting rod. This application has the effect of saving the construction period for bridge and culvert reinforcement.

Description

Technical Field

[0001] This application relates to the technical field of old bridge and culvert reinforcement, and in particular to a corrugated steel plate lining reinforcement structure for stone arch bridges. Background Technology

[0002] With the rapid development of my country's social economy and transportation industry, the reinforcement of old bridges and culverts has become an important task for traffic management and operation units now and in the future.

[0003] The relevant technology for reinforcing old bridges and culverts involves installing an inner lining inside the bridge opening, with a gap between the lining and the inner wall of the opening. The lining is constructed from corrugated steel plates, and its shape resembles a new arch placed under the original arch. The substructure is reinforced by expanding the foundation, using embedded parts connected to the corrugated steel plate arch to form a whole, and the gap between the old and new arches is filled with high-pressure cement grout.

[0004] Regarding the aforementioned technologies, this application argues that if a single assembly of corrugated steel plates cannot meet the culvert length, then segmented assembly and reinforcement are necessary. After a single section of the lining is in place, a rubble masonry end wall is constructed between one end of the lining and the culvert, and the gap between the other end of the lining and the inner wall of the culvert is sealed with sandbags or mortar mortar. Then, backfilling with concrete begins. Using sandbags, mortar mortar, and rubble masonry end walls to seal the gap between the end of the lining and the inner wall of the culvert results in a long construction period, extending the overall construction period of the bridge and culvert reinforcement. Summary of the Invention

[0005] In order to save the construction period of bridge and culvert reinforcement and improve construction efficiency, this application provides a corrugated steel plate lining reinforcement structure for stone arch bridges.

[0006] The corrugated steel plate lining reinforcement structure for stone arch bridges provided in this application adopts the following technical solution:

[0007] A corrugated steel plate lining reinforcement structure for a stone arch bridge includes an inner lining comprising multiple corrugated plates assembled and fixed to each other. An adjustment assembly is provided between the inner walls of the inner lining and the culvert. The adjustment assembly includes a positioning rod, an adjustment pipe, and a connecting rod. One end of the positioning rod is fixedly connected to the inner wall of the culvert, and the other end is threadedly connected to one end of the adjustment pipe. One end of the connecting rod is fixedly connected to the inner lining, and the other end is threadedly connected to the end of the adjustment pipe away from the positioning rod. The thread directions of the positioning rod and the adjustment pipe are opposite to those of the connecting rod and the adjustment pipe. Along the length of the culvert, a baffle is provided at the end of the inner lining. A flange is provided at the end of the baffle near the inner wall of the culvert and is fixedly connected to the inner wall of the culvert. A connecting assembly for mutual limiting and fixing is provided between the baffle and the connecting rod.

[0008] By adopting the above technical solution, the corrugated plate lining is fixed to the inner wall of the bridge and culvert. While being fixed by adjusting the components, the distance between the lining and the inner wall of the bridge and culvert can also be adjusted, thereby ensuring that the curvature of the lining conforms to the shape of the inner wall of the bridge and culvert. The flap fixes one end of the baffle to the inner wall of the bridge and culvert, and the connecting components fix and limit the other end of the baffle to the connecting rod. The baffle seals the gap between one end of the lining and the inner wall of the bridge and culvert, thereby facilitating the filling of concrete between the inner wall of the bridge and culvert and the baffle. The installation of the baffle is faster, replacing the traditional end wall masonry and scaffolding formwork construction process, thus achieving the effect of saving the construction period of bridge and culvert reinforcement.

[0009] Optionally, the connecting assembly includes a clamping plate, a fixing rod, a limiting rod, and a stop bar. One end of the fixing rod is fixedly connected to the clamping plate, and the other end is fixedly connected to the baffle. One end of the limiting rod passes through the clamping plate and the baffle in sequence, and the other end is fixedly connected to the stop bar. The stop bar is set perpendicular to the limiting rod. The limiting rod is threadedly connected to both the baffle and the clamping plate. A clamping groove is provided on the side of the clamping plate away from the baffle, and the connecting rod is located in the clamping groove.

[0010] By adopting the above technical solution, the slot is embedded in the connecting rod to achieve quick positioning of the baffle. Then, the limiting rod is rotated to further close the slot opening. The slot further limits the connecting rod and locks the connecting rod and the card plate. The fixing rod connects the card plate and the baffle into a whole. The limiting and fixing of the card plate is the limiting and fixing of the baffle.

[0011] Optionally, the limiting rod includes a square rod and a round rod with their center lines collinear. One end of the square rod is fixedly connected to a stop bar, and the other end is rotatably connected to one end of the round rod. The rotation axis is the center line of the round rod. The square rod is slidably connected to the clamping plate, and the sliding direction is along the direction of approaching or moving away from the stop bar. The round rod is threadedly connected to the clamping plate. The cross-section of the square rod is non-circular. A locking rod is provided between the square rod and the round rod. A through hole is provided on the clamping plate, which is opened along the length direction of the limiting rod. The through hole includes a smooth inner wall area and a threaded inner wall area. The threaded inner wall area is closer to the stop bar than the smooth inner wall area. The square rod slides in the smooth inner wall area of ​​the through hole, and the locking rod cannot enter the through hole.

[0012] By adopting the above technical solution, when the locking rod is not disengaged from the limiting rod, rotating the round rod can drive the square rod to rotate, thus facilitating the rotation of the stop bar to the slot opening. When not in use, the stop bar can be rotated out, preventing obstruction when the slot and connecting rod are aligned. When the square rod is about to enter the through hole, the locking rod is forcibly broken. At this time, rotating the round rod can drive the square rod to move. The round rod and the clamping plate are threaded together, and the square rod is limited by the smooth area of ​​the inner wall of the through hole, allowing only sliding and not rotation. Ultimately, rotating the round rod causes the stop bar to cooperate with the clamping plate to limit and lock the connecting rod.

[0013] Optionally, a peeling groove is provided on the end face of the card plate away from the baffle. The peeling groove is connected to the smooth area inside the through hole. The bottom of the peeling groove facing the locking rod is inclined, and the inclination direction is set along the direction close to the baffle and along the direction away from the through hole. The locking rod is a locking rod made of polycarbonate.

[0014] By adopting the above technical solution, the presence of the peeling groove and the design of the shape make it easier to peel off the locking rod when pulling out the limiting rod. The locking rod made of polycarbonate is a brittle plastic locking rod, which is easy to break and makes it easier to peel off the locking rod by external force.

[0015] Optionally, the ends where the locking rod is fixed to the square rod and the ends where the locking rod is fixed to the round rod are both inclined end faces, with the inclination direction being along the direction away from the baffle and along the direction close to the center line of the square rod.

[0016] By adopting the above technical solution, the design of the locking rod end shape further reduces the connection area between the locking rod and the outer wall of the limiting rod, making it easier to peel off the locking rod.

[0017] Optionally, the baffle is rotatably provided with an edge sealing strip at the end away from the flange. The edge sealing strip is located below the corrugated plate and abuts against the corrugated plate. Bolts are provided between adjacent corrugated plates for fixing them to each other. A bar is provided between the edge sealing strip and the corrugated plate. One end of the bar is inserted into the edge sealing strip and the other end is fixedly connected to the bolt.

[0018] By adopting the above technical solution, the edge sealing strip is horizontally fixed to the inner lining by the strip rod, and the presence of the edge sealing strip further improves the stability of the baffle after it is fixed.

[0019] Optionally, one end of the strip is fixed with an L-shaped block. A fan-shaped cavity is provided inside the edge sealing strip. A slot is opened on the edge sealing strip. The slot is opened along the fan-shaped radius of the fan-shaped cavity. The side of the L-shaped block away from the strip passes through the slot and is located in the fan-shaped cavity. The length of the side of the L-shaped block away from the strip is equal to the fan-shaped radius of the fan-shaped cavity. A hook is fixed to the end of the strip away from the L-shaped block. The hook is hooked and fixed with a bolt.

[0020] By adopting the above technical solution, the bolts used to fix adjacent corrugated plates are fully utilized. Hooks are used to secure the bolts, providing initial fixation, and the bolts can be further secured after the hooks are in place. The fan-shaped cavity and irregular block design facilitate the installation of the strips, making installation more convenient and facilitating disassembly.

[0021] Optionally, a positioning tube is fixed on the baffle, and two positioning tubes are provided and spaced apart. A protrusion is fixed on the sealing strip, and the protrusion is located between adjacent positioning tubes. A positioning component for forming a rotatable connection between the protrusion and the positioning tube is provided, and the rotation shaft is arranged along the line connecting adjacent positioning tubes.

[0022] By adopting the above technical solution, the rotating edge banding strip is easier to install, and the presence of the positioning component facilitates the installation and disassembly of the edge banding strip relative to the baffle, thus facilitating the secondary use of the edge banding strip.

[0023] Optionally, the positioning component includes a positioning pin, a positioning block, a first spring, a second spring, and an auxiliary block. The positioning pin is slidably disposed inside the positioning tube, and one end is inserted into and connected to the protrusion. The second spring is looped around the positioning pin, with one end fixedly connected to the outer wall of the positioning pin and the other end fixedly connected to the outer wall of the positioning tube. A first groove is formed on the positioning pin. One end of the first spring is fixed to the bottom of the first groove, and the other end is fixed to one end of the positioning block. One end of the positioning block is inserted into the first groove and slides back and forth within the first groove. The end face of the positioning block away from the first spring is inclined, with the inclination direction along the direction close to the protrusion and also along the direction close to the baffle. A second groove is formed on the inner wall of the positioning tube, with the length direction of the second groove along the line connecting adjacent positioning tubes. The auxiliary block is located in the second groove and slides back and forth along the length direction of the second groove. The auxiliary block cooperates with the positioning block to achieve mutual limiting between the positioning block and the second groove or for the positioning block to slide out of the second groove.

[0024] By employing the above technical solution, pressing the positioning pin causes the first spring to push the end of the positioning block out of the first groove and slide it into the second groove. The positioning block then pushes the auxiliary block aside, and the auxiliary block slides within the second groove. At this point, the positioning block abuts against the inner wall of the first groove, which limits the movement of the positioning block away from the protrusion. The end of the positioning pin is inserted into the protrusion, completing the rotational connection between the positioning tube and the protrusion. When the positioning pin is pressed again, the positioning block slides out of the second groove due to the obstruction of the auxiliary block. Then, due to the action of the second spring, the positioning block moves away from the protrusion. When it passes through the second groove again, it moves the auxiliary block along with it until the auxiliary block can no longer move. At this point, the positioning block slides out of the second groove again due to the influence of the inclined surface of the auxiliary block, and the end of the positioning pin is no longer inserted into the protrusion. The installation and removal of the baffle and the edge sealing strip can be completed by pressing the positioning pin twice, making the operation simple and convenient.

[0025] Optionally, the inclined surface of the positioning block is a positive magnetic surface, the auxiliary block is triangular, one non-inclined sidewall of the auxiliary block abuts against the bottom of the second groove, and the other non-inclined sidewall of the auxiliary block is a positive magnetic surface and is positioned directly opposite the inclined surface of the positioning block.

[0026] By adopting the above technical solution, the setting of the positive magnetic surface can facilitate the cooperation between the positioning block and the auxiliary block, and the positioning block can push the auxiliary block more smoothly when it enters the second groove.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The adjustment component can adjust the distance between the lining and the inner wall of the bridge culvert;

[0029] 2. The connecting assembly can limit and fix the baffle and the connecting rod;

[0030] 3. The positioning component can be installed and removed from the baffle and edge banding strip with two simple presses, making the operation simple and convenient. Attached Figure Description

[0031] Figure 1 This is a schematic diagram illustrating the structure of only one baffle in this embodiment of the application;

[0032] Figure 2 This is a partial structural cross-sectional view of the baffle.

[0033] Figure 3 This is a partial structural cross-sectional view of the adjustment component.

[0034] Figure 4 This is a partial sectional view showing the structure at the connection component;

[0035] Figure 5 This is a cross-sectional view showing part of the structure at the peeling groove;

[0036] Figure 6 This is to show an exploded view of part of the structure at the fan-shaped cavity;

[0037] Figure 7 This is a partial structural cross-sectional view of the positioning component.

[0038] In the diagram, 1. Lining; 11. Corrugated plate; 2. Adjustment assembly; 21. Positioning rod; 22. Adjustment tube; 23. Connecting rod; 3. Flanged edge; 4. Baffle; 41. Positioning tube; 411. Second groove; 5. Connecting assembly; 51. Clamping plate; 511. Clamping slot; 512. Peeling groove; 52. Fixing rod; 53. Limiting rod; 531. Square rod; 532. Round rod; 54. Stop bar; 6. Locking rod; 7. Edge sealing strip; 71. Fan-shaped cavity; 72. Slot hole; 73. Protrusion; 8. Strip rod; 81. Irregular block; 82. Hook; 9. Positioning assembly; 91. Positioning pin; 911. First groove; 92. First spring; 93. Positioning block; 94. Second spring; 95. Auxiliary block. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0040] This application discloses a corrugated steel plate lining reinforcement structure for stone arch bridges.

[0041] refer to Figure 1 , Figure 2and Figure 3 A corrugated steel plate inner lining reinforcement structure for a stone arch bridge includes an inner lining 1, an adjustment component 2, and a baffle 4. The inner lining 1 is assembled from multiple corrugated plates 11. The adjustment component 2 fixes the inner lining 1 to the inner wall of the bridge culvert. There is a gap between the inner lining 1 and the inner wall of the bridge culvert for subsequent concrete filling. The baffle 4 is located between the end of the inner lining 1 and the inner wall of the bridge culvert and is used to seal the space between the inner wall of the bridge culvert and the inner lining 1, providing a closed space for concrete filling.

[0042] refer to Figure 3 Multiple adjustment components 2 are provided, with adjacent adjustment components 2 spaced apart along the arc direction of the inner wall of the bridge culvert. The adjustment component 2 includes a positioning rod 21, an adjustment tube 22, and a connecting rod 23. One end of the positioning rod 21 is fixedly connected to the inner wall of the bridge culvert, and the other end is threadedly connected to one end of the adjustment tube 22. One end of the connecting rod 23 is fixedly connected to the inner lining 1, and the other end is threadedly connected to the end of the adjustment tube 22 away from the positioning rod 21. The thread direction of the positioning rod 21 and the adjustment tube 22 is opposite to the thread direction of the connecting rod 23 and the adjustment tube 22.

[0043] refer to Figure 2 and Figure 3 When using the baffle 4, it is used vertically. The top of the baffle 4 is provided with a flange 3 and the bottom of the baffle 4 is provided with a sealing strip 7. The three together form a Z-shaped shape. The flange 3 is close to the inner wall of the bridge and culvert. The flange 3 is fixedly connected to the inner wall of the bridge and culvert by bolts or positioning rods 21. If positioning rods 21 are used, it will facilitate the installation of corrugated plates in the lining 1 in the adjacent area. The adjusting pipe 22 and the connecting rod 23 can be installed directly using positioning rods 21.

[0044] refer to Figure 3 , Figure 4 and Figure 5A connecting assembly 5 is provided between the baffle 4 and the connecting rod 23, and at least two connecting assemblies 5 are provided on a single baffle 4. The connecting assembly 5 includes a retaining plate 51, a fixing rod 52, a limiting rod 53, and a stop bar 54. The retaining plate 51 has a retaining groove 511 on the side away from the baffle 4, and the connecting rod 23 is located in the retaining groove 511. One end of the fixing rod 52 is fixedly connected to the retaining plate 51, and the other end is fixedly connected to the baffle 4. One end of the limiting rod 53 passes through the retaining plate 51 and the baffle 4 in sequence, and the other end is fixedly connected to the stop bar 54. The stop bar 54 is set perpendicular to the limiting rod 53. The limiting rod 53 includes a square rod 531 and a round rod 532. The square rod 531 has a rectangular cross-section, and the round rod 532 has a circular cross-section. The square rod 531 and the round rod 532 are arranged with their center lines collinear. The ends of the square rod 531 and the round rod 532 that are close to each other are rotatably connected, with the axis of rotation being the center line of the round rod 532. The end of the square rod 531 away from the round rod 532 is fixedly connected to the stop bar 54. A locking rod 6 is provided between the square rod 531 and the round rod 532. One end of the locking rod 6 is fixedly connected to the outer wall of the square rod 531, and the other end is fixedly connected to the outer wall of the round rod 532. The middle part of the locking rod 6 spans the rotatable connection between the square rod 531 and the round rod 532. In this embodiment, the locking rod 6 is C-shaped. The end faces of both ends of the locking rod 6 are inclined, with the inclination direction along the direction away from the stop bar 4 and along the direction close to the center line of the square rod 531. The locking rod 6 is made of polycarbonate. The locking rod 6 and the stop bar 54 are symmetrically distributed on both sides of the square rod 531. There is an external thread area on the round rod 532, which is located on the round rod 532 near the square rod 531.

[0045] refer to Figure 5 A peeling groove 512 is provided on the end face of the card plate 51 facing away from the baffle 4. Along the direction perpendicular to the square rod 531, one end of the peeling groove 512 is connected to the inside of the card slot 511, and the other end is open to the outside. A through hole is provided on the card plate 51. The through hole is where the limiting rod 53 passes through the card plate 51. The through hole includes a smooth inner wall area and a threaded inner wall area. The threaded inner wall area is closer to the baffle 4 than the smooth inner wall area. The cross-section of the smooth inner wall area of ​​the through hole is rectangular, thereby limiting the square rod 531. The end of the square rod 531 near the round rod 532 slides in the smooth inner wall area of ​​the through hole, and the locking rod 6 cannot enter the through hole. The bottom of the peeling groove 512 is connected to the smooth area inside the through hole. The bottom of the peeling groove 512 facing the locking rod 6 is inclined, and the inclination direction is set along the direction close to the baffle 4 and along the direction away from the through hole. When the stop bar 54 rotates to the groove opening of the slot 511, the locking rod 6 rotates to the inclined bottom of the peeling groove 512 and pulls the round rod 532 towards the baffle 4. At this time, the locking rod 6 is peeled off, and the square rod 531 enters the peeling groove 512 and the end of the square rod 531 enters the round hole.

[0046] refer to Figure 6 and Figure 7The edge sealing strip 7 is rotatably connected to the baffle 4. A positioning tube 41 is fixed on the bottom of the baffle 4. There are two positioning tubes 41, and adjacent positioning tubes 41 are spaced apart. A protrusion 73 is fixed on the side wall of the edge sealing strip 7 near the baffle 4. The protrusion 73 is located between adjacent positioning tubes 41. A positioning component 9 is provided between the protrusion 73 and the positioning tube 41. The positioning component 9 includes a positioning pin 91, a positioning block 93, a first spring 92, a second spring 94, and an auxiliary block 95. The positioning pin 91 is slidably disposed inside the positioning tube 41, and one end is inserted into the protrusion 73. The second spring 94 is looped around the positioning pin 91, with one end fixedly connected to the outer wall of the positioning pin 91 and the other end fixedly connected to the end face of the positioning tube 41 away from the protrusion 73. A first groove 911 is formed on the positioning pin 91. One end of the first spring 92 is fixed to the bottom of the groove 911, and the other end is fixed to one end of the positioning block 93. One end of the positioning block 93 is inserted into the first groove 911 and slides back and forth within the first groove 911. The positioning block 93 is away from the first spring 92. The end face is inclined, and the inclination direction is along the direction close to the protrusion 73 and also along the direction close to the baffle 4; a second groove 411 is provided on the inner wall of the positioning tube 41, and the length direction of the second groove 411 is along the line connecting adjacent positioning tubes 41. The auxiliary block 95 is located in the second groove 411 and slides back and forth along the length direction of the second groove 411. The auxiliary block 95 is triangular in shape, and the non-inclined side of the auxiliary block 95 is slidably connected to the bottom of the groove of the second groove 411. The inclined side wall of the auxiliary block 95 is set towards the protrusion 73. The inclined surface of the positioning block 93 is a positive magnetic surface. The non-inclined side wall of the auxiliary block 95 is a positive magnetic surface and is set directly opposite the inclined surface of the positioning block 93. The second groove 411 can accommodate the positioning block 93 and the auxiliary block 95 at the same time.

[0047] refer to Figure 6 The edge banding strip 7 has a fan-shaped cavity 71 and a slot 72. The length of the slot 72 is the same as the radius of the fan-shaped cavity 71. The slot 72 is opened along one of the radii of the fan-shaped cavity 71. The edge banding strip 7 is provided with a strip rod 8. One end of the strip rod 8 is fixed with a shaped block 81. The shaped block 81 is L-shaped. The side of the shaped block 81 away from the strip rod 8 passes through the slot 72 and is located in the fan-shaped cavity 71. The length of the side of the shaped block 81 away from the strip rod 8 is the same as the radius of the fan-shaped cavity 71. The end of the strip rod 8 away from the shaped block 81 is fixed with a hook 82. The hook 82 is hooked and fixed with a bolt. The bolt here is the bolt used when adjacent corrugated plates are overlapped and fixed. The opening of the fan-shaped cavity 71 facilitates the rotation of the bar 8. While the bar 8 rotates, the edge of the irregular block 81 away from the bar hole 72 rotates in the fan-shaped cavity 71. The bar 8 rotates until the hook 82 is hooked on the bolt.

[0048] The implementation principle of the corrugated steel plate lining reinforcement structure for stone arch bridges in this application embodiment is as follows: After the corrugated plate 11 is assembled, the distance between the lining 1 and the inner wall of the bridge culvert is adjusted by adjusting component 2. Then, baffle 4 is placed at the end face of a single section of lining 1, and flange 3 is fixed to the inner wall of the bridge culvert. Baffle 4 and connecting rod 23 are fixed by connecting component 5. Then, sealing strip 7 is quickly installed by positioning component 9, and hook 82 is hooked and fixed to adjacent bolts on the corrugated plate by rotating bar 8. The overall installation is convenient and quickly seals the space between the lining 1 and the inner wall of the bridge culvert, which facilitates the subsequent concrete pouring and saves construction time.

[0049] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A corrugated steel plate inner lining reinforcement structure for a stone arch bridge, comprising an inner lining (1), wherein the inner lining (1) comprises a plurality of corrugated plates (11) assembled and fixed to each other, characterized in that: An adjustment assembly (2) is provided between the inner wall of the lining (1) and the inner wall of the bridge culvert. The adjustment assembly (2) includes a positioning rod (21), an adjustment pipe (22), and a connecting rod (23). One end of the positioning rod (21) is fixedly connected to the inner wall of the bridge culvert, and the other end is threadedly connected to one end of the adjustment pipe (22). One end of the connecting rod (23) is fixedly connected to the inner wall of the lining (1), and the other end is threadedly connected to the end of the adjustment pipe (22) away from the positioning rod (21). The thread direction of the positioning rod (21) and the adjustment pipe (22) is opposite to that of the thread direction of the connecting rod (23) and the adjustment pipe (22). Along the length of the culvert The inner lining (1) is provided with a baffle (4) at one end. The baffle (4) is provided with a flange (3) at one end near the inner wall of the bridge culvert. The flange (3) is fixedly connected to the inner wall of the bridge culvert. A connecting component (5) for limiting and fixing each other is provided between the baffle (4) and the connecting rod (23). The connecting component (5) includes a clamping plate (51), a fixing rod (52), a limiting rod (53), and a stop bar (54). One end of the fixing rod (52) is fixedly connected to the clamping plate (51), and the other end is fixedly connected to the baffle (4). One end of the limiting rod (53) passes through the clamping plate (51) and the baffle (4) in sequence. 4), the other end is fixedly connected to the stop bar (54), the stop bar (54) is set vertically to the limiting rod (53), the limiting rod (53) is threadedly connected to both the baffle (4) and the clamping plate (51); the clamping plate (51) has a groove (511) on the side away from the baffle (4), and the connecting rod (23) is located in the groove (511); the limiting rod (53) includes a square rod (531) and a round rod (532) with their center lines collinear, one end of the square rod (531) is fixedly connected to the stop bar (54), and the other end is rotatably connected to one end of the round rod (532), the rotation axis being the round rod (532). The center line, the square rod (531) and the clamping plate (51) are slidably connected, the sliding direction is along the direction of approaching or away from the baffle (4), the round rod (532) is threadedly connected to the clamping plate (51), and a locking rod (6) is provided between the square rod (531) and the round rod (532); the clamping plate (51) is provided with a through hole, the through hole is opened along the length direction of the limiting rod (53), the through hole includes an inner wall smooth area and an inner wall threaded area, the inner wall threaded area is closer to the baffle (4) than the inner wall smooth area; the square rod (531) slides in the inner wall smooth area of ​​the through hole, and the locking rod (6) cannot enter the through hole.

2. The corrugated steel plate lining reinforcement structure for stone arch bridges according to claim 1, characterized in that: The card plate (51) has a peeling groove (512) on the end face away from the baffle (4). The peeling groove (512) is connected to the smooth area inside the through hole. The bottom of the peeling groove (512) facing the locking rod (6) is inclined. The inclined direction is set along the direction close to the baffle (4) and along the direction away from the through hole. The locking rod (6) is a locking rod (6) made of polycarbonate.

3. The corrugated steel plate lining reinforcement structure for stone arch bridges according to claim 2, characterized in that: The ends of the locking rod (6) and the square rod (531) that are fixed together, as well as the ends of the locking rod (6) and the round rod (532) that are fixed together, are all inclined end faces. The inclination direction is set along the direction away from the baffle (4) and along the direction close to the center line of the square rod (531).

4. The corrugated steel plate inner lining reinforcement structure for stone arch bridges according to claim 1, characterized in that: The baffle (4) is rotatably provided with an edge sealing strip (7) at the end away from the flange (3). The edge sealing strip (7) is located below the corrugated plate (11) and abuts against the corrugated plate (11). Bolts for fixing each other are provided between adjacent corrugated plates (11). A bar (8) is provided between the edge sealing strip (7) and the corrugated plate (11). One end of the bar (8) is inserted into the edge sealing strip (7), and the other end is fixedly connected to the bolt.

5. The corrugated steel plate lining reinforcement structure for stone arch bridges according to claim 4, characterized in that: One end of the bar (8) is fixed with a shaped block (81), which is L-shaped. A fan-shaped cavity (71) is provided inside the sealing strip (7). A strip hole (72) is opened on the sealing strip (7). The strip hole (72) is opened along the fan-shaped radius of the fan-shaped cavity (71). The side of the shaped block (81) away from the bar (8) passes through the strip hole (72) and is located in the fan-shaped cavity (71). The length of the side of the shaped block (81) away from the bar (8) is the same as the fan-shaped radius of the fan-shaped cavity (71). A hook (82) is fixed at one end of the bar (8) away from the shaped block (81). The hook (82) is hooked and fixed with a bolt.

6. The corrugated steel plate lining reinforcement structure for stone arch bridges according to claim 4, characterized in that: The baffle (4) is fixed with a positioning tube (41), and there are two positioning tubes (41) spaced apart. The sealing strip (7) is fixed with a protrusion (73), which is located between adjacent positioning tubes (41). A positioning component (9) for forming a rotatable connection between the protrusion (73) and the positioning tube (41) is provided, and the rotation axis is set along the line connecting adjacent positioning tubes (41).

7. The corrugated steel plate lining reinforcement structure for stone arch bridges according to claim 6, characterized in that: The positioning component (9) includes a positioning pin (91), a positioning block (93), a first spring (92), a second spring (94), and an auxiliary block (95). The positioning pin (91) is slidably disposed inside the positioning tube (41), and one end is inserted into the protrusion (73). The second spring (94) is looped around the positioning pin (91), with one end fixedly connected to the outer wall of the positioning pin (91) and the other end fixedly connected to the outer wall of the positioning tube (41). A first groove (911) is provided on the positioning pin (91). One end of the first spring (92) is fixed to the bottom of the groove (911), and the other end is fixed to one end of the positioning block (93). One end of the positioning block (93) is inserted into the first groove (911). 1) The positioning block (93) slides back and forth in the first groove (911) and is inclined at the end face away from the first spring (92). The inclination direction is along the direction close to the protrusion (73) and along the direction close to the baffle (4). A second groove (411) is provided on the inner wall of the positioning tube (41). The length direction of the second groove (411) is along the line connecting adjacent positioning tubes (41). The auxiliary block (95) is located in the second groove (411) and slides back and forth along the length direction of the second groove (411). The auxiliary block (95) cooperates with the positioning block (93) to realize the mutual limiting of the positioning block (93) and the second groove (411) or the positioning block (93) slides out of the second groove (411).

8. The corrugated steel plate lining reinforcement structure for stone arch bridges according to claim 7, characterized in that: The inclined surface of the positioning block (93) is a positive magnetic surface, the auxiliary block (95) is triangular, one side of the non-inclined sidewall of the auxiliary block (95) abuts against the bottom of the second groove (411), and the other side of the non-inclined sidewall of the auxiliary block (95) is a positive magnetic surface and is set directly opposite the inclined surface of the positioning block (93).

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