A floodable bridge

Abstract

This utility model provides a flood control bridge, including a base, a bridge body mounted on the base, and a bridge deck mounted on the bridge body. The bridge body includes multiple precast culverts arranged in a row and a concrete layer filling the spaces between the precast culverts. Each precast culvert includes a pipe body and multiple vertical plates spaced apart along the axial direction of the pipe body. Vertical plates are provided at both ends of the pipe body. The pipe bodies of any two adjacent precast culverts are parallel, and the vertical plates are aligned and adhered to each other. The concrete layer fills the space enclosed by the vertical plates. Plastic stone layers are provided on both sides of the bridge body and are bonded to the vertical plates at both ends of the pipe body. This utility model solves the technical problems of poor overall structural integrity, easy deformation and cracking, and susceptibility to flood damage in existing flood control bridges. It improves the structural stability and erosion resistance of flood control bridges, and is convenient to construct and highly reliable.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, and in particular to a flooded bridge. Background Technology

[0002] A flood bridge is a simple, ordinary bridge built over a river. When the water level rises slightly, the water can overflow the bridge surface. It is usually built on secondary roads and crosses rivers where the difference between the normal water level and the flood level is large and the river is not navigable. Under the condition that the flood is short-lived and traffic can be temporarily interrupted, the bridge elevation can be designed according to the normal water level, so that the water can overflow the bridge surface during floods.

[0003] Existing flood-prone bridges generally use C20 embedded stone concrete for their foundations, precast concrete culverts buried under the bridge, and conventional concrete for the bridge deck. Although this can meet the flood discharge capacity of the bridge itself, it has problems such as poor structural integrity, easy deformation and cracking, and susceptibility to flood damage. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a flood bridge, which solves the problems of poor structural integrity, easy deformation and cracking, and susceptibility to flood damage in the existing flood bridge.

[0005] According to an embodiment of this utility model, a flooded bridge includes a base, a bridge body disposed on the base, and a bridge deck disposed on the bridge body. The bridge body includes a plurality of precast culverts arranged in a row and a concrete layer filling the spaces between the precast culverts. Each precast culvert includes a pipe body and a plurality of vertical plates spaced apart along the axial direction of the pipe body. The vertical plates are respectively provided at both ends of the pipe body. The pipe bodies of any two adjacent precast culverts are parallel and the vertical plates are aligned and attached to each other. The concrete layer fills the space enclosed by the vertical plates. Plastic stone layers are respectively provided on both sides of the bridge body and are bonded to the vertical plates at both ends of the pipe body.

[0006] Furthermore, the base includes a leveling layer and a base layer disposed on the leveling layer, and the precast culvert is disposed on the base layer.

[0007] Furthermore, a positioning rod is pre-embedded on the precast culvert, and a positioning hole that cooperates with the positioning rod is provided on the base layer.

[0008] Furthermore, the bridge body also includes a connector, and the slots on the two vertical plates that are respectively provided with slots and fit together are connected, and the connector is inserted into the slot.

[0009] Furthermore, the connector is provided with receiving grooves communicating with the slot on its opposite sides, and the connector is also provided with grouting holes communicating with the receiving grooves.

[0010] Furthermore, the connector is provided with a plurality of through holes spaced apart along the vertical direction, and the through holes are respectively connected to the grouting hole and the receiving groove.

[0011] Furthermore, the vertical plates at both ends of the precast culvert are respectively covered with mesh cloth, which is located between the vertical plates and the plastic stone layer.

[0012] Furthermore, the mesh fabric is provided with an adhesive layer, and the plastic stone layer covers the adhesive layer.

[0013] Furthermore, color mortar layers are provided on both sides of the bridge body, and the color mortar layers cover the plastic stone layer.

[0014] Furthermore, a sealing paint layer is provided on both sides of the bridge body, and the sealing paint layer covers the pigment mortar layer.

[0015] Compared with existing technologies, this utility model has the following beneficial effects: By arranging multiple precast culverts in a row on the base, with the vertical plates on adjacent precast culverts attached one by one, and filling the space enclosed by the vertical plates with a concrete layer, the precast culverts can be bonded together as one unit. This facilitates construction while ensuring a reliable connection between the precast culverts, thereby improving the structural strength and load-bearing capacity of the bridge. The precast culverts form a channel for water flow, and plastic stone layers are bonded to both sides of the bridge to cover the surface of the vertical plates at both ends of the pipes, protecting the surface of the precast culverts and enhancing the bridge's scour resistance. This solves the technical problems of poor overall structure, easy deformation and cracking, and susceptibility to flood damage in existing flood-prone bridges, resulting in improved structural stability and scour resistance of flood-prone bridges. Furthermore, it is convenient to construct and highly reliable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a flooded bridge according to an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of a flooded bridge according to an embodiment of the present invention;

[0018] Figure 3 This is a cross-sectional view of another section of a flooded bridge according to an embodiment of the present invention;

[0019] Figure 4 This is a structural schematic diagram of the prefabricated culvert and connectors in a flooded bridge according to an embodiment of the present invention;

[0020] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0021] In the above attached diagrams: 1. Base; 11. Leveling layer; 12. Base layer; 2. Bridge body; 21. Concrete layer; 22. Plastic stone layer; 23. Mesh fabric; 24. Adhesive layer; 25. Color mortar layer; 26. Sealing paint layer; 3. Bridge deck; 4. Precast culvert; 41. Pipe body; 42. Vertical plate; 43. Positioning rod; 44. Slot; 5. Connector; 51. Receiving groove; 52. Grouting hole; 53. Through hole. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model embodiment proposes a flooded bridge, which includes a base 1, a bridge body 2 disposed on the base 1, and a bridge deck 3 disposed on the bridge body 2. The bridge body 2 includes a plurality of precast culverts 4 arranged in a row and a concrete layer 21 filling the spaces between the precast culverts 4. Each precast culvert 4 includes a pipe body 41 and a plurality of vertical plates 42 spaced apart along the axial direction of the pipe body 41, with the vertical plates 42 respectively provided at both ends of the pipe body 41. Any two adjacent precast culverts 4... The pipe bodies 41 are parallel and the vertical plates 42 are aligned and attached one by one. The concrete layer 21 fills the space enclosed by the vertical plates 42 to bond the precast culverts 4 arranged in a row on the base 1 into a whole, ensuring the structural stability of the bridge body 2. Plastic stone layers 22 are provided on both sides of the bridge body 2. The plastic stone layers 22 are bonded to the vertical plates 42 at both ends of the pipe bodies 41 to protect the surface of the bridge body 2 from water flow impact, thereby enhancing the erosion resistance of the bridge body 2.

[0024] like Figure 2 and Figure 4 As shown, the base 1 includes a leveling layer 11 and a base layer 12 disposed on the leveling layer 11, and the precast culvert 4 is disposed on the base layer 12. The leveling layer 11 is formed by excavating and leveling the riverbed and then pouring C20 concrete, and the base layer 12 is formed by pouring C25 concrete on the leveling layer 11, to ensure that the base 1 is flat and its position on the riverbed remains stable, thereby improving the stability of the flooded bridge.

[0025] Specifically, a positioning rod 43 is pre-embedded on the precast culvert 4, and a positioning hole that mates with the positioning rod 43 is provided on the base layer 12. After the base layer 12 is poured, the positioning hole is drilled on the base layer 12, and the positioning rod 43 is embedded on the precast culvert 4 during the pouring of the precast culvert 4. When the flood bridge is erected, the positioning rod 43 is inserted into the corresponding positioning hole to position the precast culvert 4.

[0026] Please combine Figure 2 and Figure 4 The bridge body 2 also includes a connector 5. The vertical plates 42 are respectively provided with slots 44, and the slots 44 on two mutually fitting vertical plates 42 are connected. The connector 5 is inserted into the slot 44. The cross-section of the slot 44 on the vertical plate 42 is trapezoidal, and the shape of the connector 5 is adapted to the slot 44. Inserting the connector 5 into the slot 44 connects two adjacent precast culverts 4 and fills the gap between the two precast culverts 4, preventing concrete leakage from the gap between the precast culverts 4 during the pouring of the concrete layer 21.

[0027] Please refer to Figure 4 and Figure 5 The connector 5 has receiving grooves 51 on its opposite sides that communicate with the slot 44. The connector 5 also has grouting holes 52 that communicate with the receiving grooves 51. After inserting the connector 5 into the slot 44, mortar is poured into the grouting holes 52 to fill the receiving grooves 51 and bond the connector 5 to the precast culvert 4, so that all the precast culverts 4 form a whole, which helps to further improve the structural strength of the bridge body 2.

[0028] In detail, the connector 5 is provided with a plurality of through holes 53 spaced apart along the vertical direction. The through holes 53 are respectively connected to the grouting hole 52 and the receiving groove 51. By providing a plurality of through holes 53 spaced apart along the vertical direction of the connector 5, mortar is guided to be injected into the receiving groove 51 along the grouting hole, so that the mortar can fill the receiving groove 51 and avoid the formation of cavities in the receiving groove 51, which would affect the stability of the connection between the connector 5 and the precast culvert 4.

[0029] like Figure 1 and Figure 3 As shown, mesh fabric 23 is respectively covered on the vertical plates 42 at both ends of the precast culvert 4, and the mesh fabric 23 is located between the vertical plates 42 and the plastic stone layer 22. In order to evenly distribute the stress on the plastic stone layer 22 during construction and application and to strengthen and protect the plastic stone layer 22 from cracking, the mesh fabric 23 is glued to the vertical plates 42 for the plastic stone layer 22 to adhere. The mesh fabric 23 is made of EPS self-adhesive mesh fabric with alkali-resistant glass fiber as the base material. The mesh fabric 23 is pre-cut to the required size, leaving the necessary overlap length or overlapping part length, and then glued to the vertical plates 42 and pressed tightly to ensure that the mesh fabric 23 is flat and wrinkle-free.

[0030] In this embodiment, an adhesive layer 24 is provided on the mesh fabric 23, and the plastic stone layer 22 covers the adhesive layer 24. To ensure that the plastic stone layer 22 is firmly bonded to the vertical plate 42, an interface agent is first uniformly rolled onto the mesh fabric 23 using a roller to better utilize the adhesive layer 24. After the interface agent is rolled, a flexible adhesive is brushed onto the mesh fabric 23 to form the adhesive layer for the plastic stone layer 22 to adhere, ensuring that the adhesive layer 24 has a good bonding effect and preventing the plastic stone layer 22 from falling off.

[0031] Please refer to Figure 3 The bridge body 2 is further provided with color mortar layers 25 on both sides, which cover the artificial stone layer 22. The artificial stone used in the artificial stone layer 22 is shaped using SPC polymer cement mortar. After the shaping is completed, before the artificial stone is completely dry, a color mortar layer is applied to the artificial stone to color it and form the color mortar layer 25 to protect the artificial stone, while ensuring the coloring effect and preventing the color mortar layer 25 from falling off the surface of the artificial stone during subsequent use.

[0032] Specifically, a sealing paint layer 26 is provided on both sides of the bridge body 2, which covers the pigment mortar layer 25. After the artificial stone used in the artificial stone layer 22 is made, it needs to be moisturized and cured, and the surface of the formed artificial stone needs to be adjusted, supplemented and reinforced. Then, the sealing paint is applied to the dried artificial stone surface to form the sealing paint layer 26. Before applying the paint, it is ensured that the surface of the artificial stone is free of impurities and dust, so that the sealing paint layer 26 isolates the artificial stone from the external environment and reduces the erosion of the artificial stone layer 22 by the external environment.

[0033] like Figure 1 , Figure 2 and Figure 3As shown, the construction steps of the flooded bridge provided in this embodiment are as follows: First, the riverbed is excavated and leveled. Then, the leveling layer 11 and the base layer 12 are poured in sequence to form the base 1. The precast culverts 4 and the plastic stone are prefabricated. The precast culverts 4, after curing, are hoisted onto the base 1 in sequence so that the precast culverts 4 are arranged in a row on the base 1. The connectors 5 are inserted into the slots 44 and mortar is injected into the grouting holes 52. After the mortar solidifies, C25 concrete is poured into the space enclosed by the vertical plates 42 to form the concrete layer 21. After the concrete layer 21 solidifies, the bridge body 2 is constructed on both sides of the vertical plate 42. Backfill with soil and rocks, then lay the bridge deck 3 and approach bridges on the bridge body 2, and roughen the surface of the vertical plate 42 to which the plastic stone is to be pasted. After roughening, use a high-pressure water gun to wash away the dust and debris on the surface, making the surface of the vertical plate 42 wet. Then cut the mesh cloth 23 to the required size and paste it onto the vertical plate 42 and press it tightly. Then apply an interface agent and a flexible adhesive to the mesh cloth 23 in sequence to form the adhesive layer 24. Then adhere the manufactured plastic stone to the adhesive layer 24 to form the plastic stone layer 22 covering the surface of the vertical plate 42, thus completing the construction of the flood bridge.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A flood-prone bridge, comprising a base, a bridge body disposed on the base, and a bridge deck disposed on the bridge body, characterized in that: The bridge structure includes multiple precast culverts arranged in a row and a concrete layer filling the spaces between the precast culverts. Each precast culvert includes a pipe body and multiple vertical plates spaced apart along the axial direction of the pipe body. The vertical plates are respectively provided at both ends of the pipe body. The pipe bodies of any two adjacent precast culverts are parallel and the vertical plates are aligned and attached to each other. The concrete layer fills the space enclosed by the vertical plates. Plastic stone layers are respectively provided on both sides of the bridge structure and are bonded to the vertical plates at both ends of the pipe body.

2. A flood-prone bridge as described in claim 1, characterized in that: The base includes a leveling layer and a base layer disposed on the leveling layer, and the precast culvert is disposed on the base layer.

3. A flood-prone bridge as described in claim 2, characterized in that: The precast culvert has a pre-embedded positioning rod, and the base layer has positioning holes that cooperate with the positioning rod.

4. A flood-prone bridge as described in claim 1, characterized in that: The bridge body also includes a connector. The vertical plates are respectively provided with slots and the slots on the two vertical plates that fit together are connected. The connector is inserted into the slot.

5. A flood-prone bridge as described in claim 4, characterized in that: The connector is provided with receiving grooves on opposite sides that communicate with the slot, and the connector is also provided with grouting holes that communicate with the receiving grooves.

6. A flood-prone bridge as described in claim 5, characterized in that: The connector has multiple through holes spaced at intervals along the vertical direction, and the through holes are respectively connected to the grouting hole and the receiving groove.

7. A flood-prone bridge as described in claim 1, characterized in that: The vertical plates at both ends of the precast culvert are respectively covered with mesh cloth, which is located between the vertical plates and the plastic stone layer.

8. A flood-prone bridge as described in claim 7, characterized in that: An adhesive layer is provided on the mesh fabric, and the plastic stone layer covers the adhesive layer.

9. A flood-prone bridge as described in claim 1, characterized in that: The bridge body is also provided with color mortar layers on both sides, and the color mortar layers cover the plastic stone layer.

10. A flood-prone bridge as described in claim 9, characterized in that: The bridge body is also provided with a sealing paint layer on both sides, which covers the pigment mortar layer.

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