Bridge and culvert reinforcing structure

Abstract

The utility model discloses a bridge and culvert reinforcing structure, which belongs to the technical field of road maintenance construction and comprises a concrete layer and a corrugated steel plate layer which are sequentially arranged in a bridge and culvert lining, reinforcing bases are arranged on the lower portions of wall bodies on two sides of a bridge and culvert, and the concrete layer comprises a connecting frame and concrete poured between the corrugated steel plate layer and the bridge and culvert. The connecting frame comprises connecting steel bars embedded in the inner wall of the bridge and culvert, steel bar meshes are bound between the connecting steel bars, the corrugated steel plate layer comprises corrugated steel plate units, U-shaped plates are evenly distributed on the side faces, facing the bridge and culvert, of the corrugated steel plate units, the ends of the connecting steel bars are bent to form hooks, and the hooks are used for hanging the U-shaped plates. The two ends of the corrugated steel plate units are connected with the reinforcing bases. The bridge culvert, the concrete and the corrugated steel plate layer are connected into a whole through the connecting frame, the bearing capacity of the bridge culvert is reinforced and improved, the connecting steel bars and the corrugated steel plate units are rapidly assembled, and the construction efficiency is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway maintenance construction, in particular to a bridge and culvert reinforcement structure. Background Art

[0002] With the rapid development of social economy and transportation, bridges are burdened with heavy traffic loads and heavy traffic volume. Many small bridges and culverts built in the 1990s mostly use solid cast-in-place slabs or ordinary reinforced concrete hollow slabs for their superstructures. Due to the low design load level, with the annual increase in traffic volume and service time, bridge diseases are becoming more and more serious, gradually unable to meet the load requirements, and need to be demolished and rebuilt or reinforced and renovated.

[0003] Traditional repair and reinforcement solutions only address common defects. While they can eliminate superficial defects, they fail to increase the bridge's bearing capacity, effectively treating the symptoms rather than the underlying cause. Demolition and reconstruction can completely address structural defects, but they require traffic closures and carry the disadvantages of environmental pollution from construction waste, long construction periods, and high costs.

[0004] A Chinese utility model patent (CN205474874U) discloses a plate girder bridge reinforcement structure. This structure reinforces the plate girder bridge by adding left and right reinforcement foundations, corrugated steel arch shells installed on the left and right reinforcement foundations, and concrete infill poured between the corrugated steel arch shells and the plate girder to form a new load-bearing structure. The patent's implementation requires first constructing scaffolding to assist in the assembly of the corrugated steel plates, then assembling the plates, and then securing them within the culvert. The cumbersome assembly and securing procedures for the corrugated steel plates result in low construction efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a bridge culvert reinforcement structure, aiming to solve the problems existing in the prior art in the above background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A bridge culvert reinforcement structure includes a concrete layer and a corrugated steel plate layer sequentially arranged on the inner lining of the culvert, and a reinforcement base is arranged at the lower part of the wall on both sides of the culvert. The concrete layer includes a connecting frame and concrete poured between the corrugated steel plate layer and the culvert. The connecting frame includes connecting steel bars embedded in the inner wall of the culvert, and steel mesh is tied between the connecting steel bars. The corrugated steel plate layer includes corrugated steel plate units, and U-shaped plates are evenly arranged on the side of the culvert. The ends of the connecting steel bars are bent to form hooks, and the hooks are used to hang the U-shaped plates. The two ends of the corrugated steel plate units are connected to the reinforcement base.

[0008] Furthermore, the corrugated steel plate unit includes a first corrugated steel plate, a second corrugated steel plate and a third corrugated steel plate connected in sequence, the first corrugated steel plate and the third corrugated steel plate are arranged on the walls on both sides of the culvert, and the second corrugated steel plate is located on the bottom surface of the bridge deck of the culvert. Connection holes are preset at the connection points of the first corrugated steel plate, the second corrugated steel plate and the third corrugated steel plate, and the corresponding connection holes are connected by bolts.

[0009] Furthermore, the corrugated steel plate unit includes a first corrugated steel plate unit and a second corrugated steel plate unit that are alternately arranged. The first corrugated steel plate unit and the second corrugated steel plate unit have different first corrugated steel plate lengths, different second corrugated steel plate lengths, and different third corrugated steel plate lengths. Connection holes are preset at adjacent connection points between the first corrugated steel plate unit and the second corrugated steel plate unit, and are connected by bolts.

[0010] Furthermore, sealing strips are respectively provided at the connections between the first corrugated steel plate, the second corrugated steel plate and the third corrugated steel plate, and sealing strips are respectively provided at the connections between the first corrugated steel plate unit and the second corrugated steel plate unit.

[0011] Furthermore, the embedding depth of the connecting steel bars at the bridge culvert wall is ≥25 cm, and the embedding depth of the connecting steel bars 203 at the bridge culvert deck is ≥15 cm.

[0012] Compared with the shortcomings and deficiencies of the prior art, the present invention has the following beneficial effects.

[0013] 1. The utility model provides a bridge culvert reinforcement structure, in which a concrete layer and a corrugated steel plate layer are sequentially arranged in the lining of the bridge culvert, connecting steel bars are implanted on the surface of the lining of the bridge culvert, steel mesh is tied between the connecting steel bars, and the ends of the connecting steel bars are bent to form hooks, and U-shaped plates are arranged corresponding to the corrugated steel plate units. The U-shaped plates are hung by hooks, which facilitates the rapid installation of the corrugated steel plate units to the connecting frame, and can greatly improve the installation efficiency and construction convenience of the corrugated steel plate units. The connecting frame connects the bridge culvert, concrete and corrugated steel plate layers to form a whole, thereby achieving the purpose of reinforcing and improving the bearing capacity of the bridge culvert.

[0014] 2. In the corrugated steel plate unit, the first corrugated steel plate, the second corrugated steel plate and the third corrugated steel plate are all preset with connection holes, and the corrugated steel plate unit can be quickly assembled by bolts; the corrugated steel plate unit adopts the first corrugated steel plate unit and the second corrugated steel plate unit arranged alternately, which can make the joints between the corrugated steel plates staggered, which is beneficial to ensure the bearing performance of the corrugated steel plate layer.

[0015] 3. Sealing strips are provided at the joints of the first corrugated steel plate, the second corrugated steel plate and the third corrugated steel plate, and sealing strips are provided at the joints of the first corrugated steel plate unit and the second corrugated steel plate unit, which helps to improve the sealing of the joints. In conjunction with filling the joints with structural adhesive during the subsequent construction process, concrete leakage at the joints can be effectively prevented. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a bridge culvert reinforcement structure in the utility model.

[0017] Figure 2 It is a schematic diagram of the connection structure between the corrugated steel plate unit and the connecting frame in the utility model.

[0018] Figure 3 yes Figure 2 Schematic diagram of the locally enlarged structure at point A in the middle.

[0019] Figure 4 It is a schematic diagram of the connection structure of the first corrugated steel plate and the second corrugated steel plate in the present invention.

[0020] Figure 5 It is a structural schematic diagram of the utility model in which the first corrugated steel plate units and the second corrugated steel plate units are alternately arranged in the bridge culvert.

[0021] In the figure: 100, bridge culvert; 101, wall; 102, bridge deck; 200, concrete layer; 201, concrete; 202, connecting frame; 203, connecting steel bars; 204, steel mesh; 205, hook; 300, corrugated steel plate layer; 301, reinforcement base; 302, first corrugated steel plate; 303, second corrugated steel plate; 304, third corrugated steel plate; 305, U-shaped plate; 306, connecting hole; 307, sealing strip; 308, bolt; 309, first corrugated steel plate unit; 310, second corrugated steel plate unit; 311, joint. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0023] Reference Figure 1-Figure 5 A bridge culvert reinforcement structure includes a concrete layer 200 and a corrugated steel plate layer 300 sequentially arranged on the inner lining of the bridge culvert 100. The concrete layer 200 includes a connecting frame 202, and concrete 201 is poured between the corrugated steel plate layer 300 and the bridge culvert 100. The concrete 201 is preferably self-leveling concrete. The connecting frame 202 connects the bridge culvert 100, the concrete 201 and the corrugated steel plate layer 300, so that the various parts cooperate to form a whole and are jointly subjected to force to improve the overall bearing capacity of the bridge culvert 100.

[0024] Reinforcement bases 301 are respectively provided at the lower part of the walls 101 on both sides of the bridge culvert 100. The reinforcement bases 301 adopt a reinforced concrete structure. Specifically, the reinforcement bases 301 include tying foundation steel bars and pouring concrete. The top surface of the reinforcement base 301 is slightly higher than the road surface below the bridge culvert 100.

[0025] The connecting frame 202 includes connecting steel bars 203 and steel mesh 204. The connecting steel bars 203 are evenly implanted into the inner lining of the bridge culvert 100. The connecting steel bars 203 are evenly and vertically arranged on the walls 101 on both sides and the bottom surface of the bridge deck 102. The planting depth of the connecting steel bars 203 at the wall 101 is ≥25 cm, and the planting depth of the connecting steel bars 203 at the bridge deck 102 is ≥15 cm. The steel mesh 204 is also respectively arranged on the walls 101 on both sides and the bottom surface of the bridge deck 102. The steel mesh 204 is tied and fixed to the connecting steel bars 203. The steel mesh 204 arranged at the wall 101 is parallel to the wall 101, and the steel mesh 204 located at the bottom of the bridge deck 102 is parallel to the bridge deck 102.

[0026] Along the connecting direction on both sides of the bridge culvert 100, the corrugated steel plate layer 300 is composed of multiple groups of corrugated steel plate units connected in sequence. The corrugated steel plate unit includes a first corrugated steel plate 302, a second corrugated steel plate 303 and a third corrugated steel plate 304 connected in sequence, wherein the first corrugated steel plate 302 and the third corrugated steel plate 304 are respectively located at the walls 101 on both sides, and the second corrugated steel plate 303 is located below the bridge deck 102. The corrugated steel plates are prefabricated in the factory, and the shape and size of the corrugated steel plate units are adapted to the shape and size of the bridge culvert 100. The adjacent side edges of the first corrugated steel plate 302 and the second corrugated steel plate 303, as well as the adjacent side edges of the second corrugated steel plate 303 and the third corrugated steel plate 304 are respectively preset with connection holes 306. After the adjacent corrugated steel plates are overlapped, the aligned connection holes 306 are fixed by bolts 308, which facilitates the rapid assembly of the corrugated steel plate units.

[0027] The end of the connecting steel bar 203 is bent to form a hook 205 with a bending angle of 90°. Accordingly, a U-shaped plate 305 is provided on the side of the corrugated steel plate unit facing the culvert 100. The U-shaped plate 305 is provided at the crest of the corrugated steel plate unit. The corrugated steel plate unit is evenly spaced with multiple U-shaped plates 305. The aligned U-shaped plates 305 are suspended and connected to the hook 205, which can quickly connect the corrugated steel plate unit to the connecting frame 202, thereby helping to improve construction efficiency and convenience.

[0028] In one embodiment, the corrugated steel plate layer 300 includes a first corrugated steel plate unit 309 and a second corrugated steel plate unit 310, and the first corrugated steel plate unit 309 and the second corrugated steel plate unit 310 are arranged alternately. The difference between the first corrugated steel plate unit 309 and the second corrugated steel plate unit 310 is that the lengths of the first corrugated steel plate 302 are different, the lengths of the second corrugated steel plate 303 are different, and the lengths of the third corrugated steel plate 304 are different. This makes the seams 311 between adjacent corrugated steel plates in the first corrugated steel plate unit 309 and the seams 311 between adjacent corrugated steel plates in the second corrugated steel plate unit 310 staggered, which is beneficial to ensuring the overall load-bearing performance of the corrugated steel plate layer 300.

[0029] Connection holes 306 are respectively preset at the adjacent side edges of the first corrugated steel plate unit 309 and the second corrugated steel plate unit 310 , and the aligned connection holes 306 are connected and fixed by bolts 308 .

[0030] In one embodiment, a sealing strip 307 is provided at the connection between adjacent corrugated steel plates. In the corrugated steel plate unit, taking the second corrugated steel plate 303 as an example, a sealing strip 307 is provided at the connecting side edge of the first corrugated steel plate 302 and the second corrugated steel plate 303. After the first corrugated steel plate 302 and the second corrugated steel plate 303 are connected and fixed by bolts 308, the overlapping part can compress the sealing strip 307. In conjunction with the subsequent construction process, structural adhesive is filled into the joint 311, which is conducive to increasing the sealing effect at the joint 311. The first corrugated steel plate 302 and the third corrugated steel plate 304 are both provided with a sealing strip 307, which will not be repeated here.

[0031] A sealing strip 307 is provided on the connecting side edge of the first corrugated steel plate unit 309 close to the second corrugated steel plate unit 310. After the first corrugated steel plate unit 309 and the second corrugated steel plate unit 310 are connected and fixed by bolts 308, the overlapping part can compress the sealing strip 307. Similarly, the second corrugated steel plate unit 310 is provided with a sealing strip 307, which will not be repeated here.

[0032] During the bridge and culvert reinforcement construction,

[0033] First, dig down along the walls 101 on both sides of the bridge culvert 100 to the foundation of the wall 101 or the upper end of the foundation beam, tie the foundation steel bars in the foundation pit and pour concrete to form a reinforced base 301;

[0034] Then, assemble the first corrugated steel plate unit 309 and the second corrugated steel plate unit 310 respectively, use the hook 205 at the end of the connecting steel bar 203 to suspend and connect it with the U-shaped plate 305, connect the first corrugated steel plate unit 309 to the connecting frame 202, and then connect the second corrugated steel plate unit 310 to the connecting frame 202 and the first corrugated steel plate unit 309 respectively, and alternately install the first corrugated steel plate unit 309 and the second corrugated steel plate unit 310 in sequence;

[0035] Finally, structural adhesive is filled into the joints 311 between the corrugated steel plates to further seal them and prevent leakage when pouring self-leveling concrete. Concrete 201 is poured between the corrugated steel plate layer 300 and the culvert 100 to form a concrete layer 200.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bridge culvert reinforcement structure, comprising a concrete layer (200) and a corrugated steel plate layer (300) sequentially arranged on the inner lining of the bridge culvert (100), and a reinforcement base (301) is arranged at the lower part of the wall (101) on both sides of the bridge culvert (100), characterized in that: The concrete layer (200) includes a connecting frame (202) and concrete (201) poured between the corrugated steel plate layer (300) and the bridge culvert (100), the connecting frame (202) includes connecting steel bars (203) embedded in the inner wall of the bridge culvert (100), steel mesh (204) is tied between the connecting steel bars (203), the corrugated steel plate layer (300) includes corrugated steel plate units, and the corrugated steel plate units are evenly arranged with U-shaped plates (305) toward the side of the bridge culvert (100), the ends of the connecting steel bars (203) are bent to form hooks (205), and the hooks (205) are used to hang the U-shaped plates (305), and the two ends of the corrugated steel plate units are connected to the reinforcement base (301).

2. The bridge and culvert reinforcement structure according to claim 1, characterized in that: The corrugated steel plate unit comprises a first corrugated steel plate (302), a second corrugated steel plate (303) and a third corrugated steel plate (304) connected in sequence, wherein the first corrugated steel plate (302) and the third corrugated steel plate (304) are arranged on the walls (101) on both sides of the bridge culvert (100), and the second corrugated steel plate (303) is located on the bottom surface of the bridge deck (102) of the bridge culvert (100). Connection holes (306) are respectively preset at the connection points of the first corrugated steel plate (302), the second corrugated steel plate (303) and the third corrugated steel plate (304), and the aligned connection holes (306) are connected by bolts (308).

3. The bridge and culvert reinforcement structure according to claim 2, characterized in that: The corrugated steel plate unit comprises a first corrugated steel plate unit (309) and a second corrugated steel plate unit (310) arranged alternately. The first corrugated steel plate unit (309) and the second corrugated steel plate unit (310) have first corrugated steel plates (302) of different lengths, second corrugated steel plates (303) of different lengths, and third corrugated steel plates (304) of different lengths. Connection holes (306) are preset at adjacent connection points between the first corrugated steel plate unit (309) and the second corrugated steel plate unit (310), and the units are connected by bolts (308).

4. The bridge and culvert reinforcement structure according to claim 3, characterized in that: Sealing strips (307) are respectively provided at the connections between the first corrugated steel plate (302), the second corrugated steel plate (303), and the third corrugated steel plate (304), and sealing strips (307) are respectively provided at the connections between the first corrugated steel plate unit (309) and the second corrugated steel plate unit (310).

5. The bridge and culvert reinforcement structure according to claim 1, characterized in that: The planting depth of the connecting steel bars (203) at the wall (101) of the bridge culvert (100) is ≥25 cm, and the planting depth of the connecting steel bars (203) at the bridge deck (102) of the bridge culvert (100) is ≥15 cm.

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