Temporary bridge reinforcing structure suitable for heavy transportation of overweight vehicles

Abstract

The utility model relates to the field of bridge engineering reinforcement, in particular to a temporary bridge reinforcement structure suitable for heavy-duty transportation of overweight vehicles. And the problems of non-uniform stress distribution and insufficient bearing capacity of the main beam are effectively solved. The temporary bridge reinforcing structure comprises an under-bridge temporary supporting system and a bridge floor force transmission system. The under-bridge temporary supporting system comprises a foundation, a plurality of supporting columns and a plurality of supporting columns, wherein the foundation is poured and formed on the ground; the stand column is fixed to a foundation, and a second steel plate is fixed to the top of the stand column; the stand column top cover beam is fixed on the 2 # steel plate of the stand column; the supporting longitudinal beams are arranged on the stand column top cover beams, and the bridge deck is supported through the supporting longitudinal beams; the bridge floor force transmission system comprises sleepers, a plurality of steel wire ropes and a plurality of steel wire ropes, wherein the sleepers are uniformly paved on a bridge floor; and the bridge floor steel plate is fixed on the sleepers. According to the structure, the overall stress of the hollow slab bridge is optimized when heavy vehicles pass through the hollow slab bridge during transportation, so that the structure has good stress performance and large economic benefits.

Description

Technical Field

[0001] The utility model relates to the field of bridge engineering reinforcement, in particular to a temporary bridge reinforcement structure suitable for large-scale transport overweight vehicles. Background Art

[0002] The existing temporary reinforcement scheme for bridges fails to fully consider the load of overweight vehicles transporting large items, resulting in uneven force distribution and insufficient bearing capacity of hollow slab bridges. Due to insufficient bearing capacity, existing bridges have safety hazards, especially when large transport vehicles pass through. At the same time, the existing temporary reinforcement scheme for bridges lacks effective lateral force distribution and structural stability measures, resulting in easy deformation or damage under heavy loads. The problems of uneven force and insufficient bearing capacity lead to stress concentration in some areas, accelerating the damage of the bridge. Utility Model Content

[0003] The utility model provides a temporary support under the bridge and a bridge deck force transmission structure, which effectively solves the problem of insufficient bearing capacity of existing hollow slab bridges when heavy transport vehicles pass through. The present application adopts a temporary support system under the bridge and a bridge deck force transmission system, which has the characteristics of simple structure, light weight, high strength and fast construction. The bridge deck force transmission system adopts sleepers and bridge deck steel plates to form a transverse force transmission structure, and the sleepers are arranged in a straight line along the transverse direction of the bridge deck, which effectively solves the problem of single hollow slab force when heavy-loaded vehicles pass through.

[0004] The technical solution of the utility model is as follows:

[0005] A temporary bridge reinforcement structure suitable for large-scale transport of overweight vehicles, characterized in that the temporary bridge reinforcement structure includes a temporary support system under the bridge and a bridge deck force transmission system;

[0006] The temporary support system under the bridge includes:

[0007] A foundation, wherein the foundation is cast and formed on the ground;

[0008] A column, wherein the column is fixed on the foundation, and a 2# steel plate is fixed on the top of the column;

[0009] A column top cover beam, wherein the column top cover beam is fixed to the 2# steel plate of the column;

[0010] A supporting longitudinal beam, wherein the supporting longitudinal beam is arranged on the top cover beam of the column and supports the bridge deck through the supporting longitudinal beam;

[0011] The bridge deck force transmission system comprises:

[0012] Sleepers, the sleepers are evenly laid on the bridge deck;

[0013] A bridge deck steel plate is fixed on the sleepers.

[0014] Furthermore, the column and the foundation are fixed in the following manner: an embedded steel plate is provided at the bottom of the column, and the embedded steel plate is connected to the foundation by anchor bolts.

[0015] Furthermore, a plurality of 1# steel plates perpendicular to the embedded steel plates are arranged on the bottom side of the column, and the embedded steel plates are fixedly connected to the 1# steel plates.

[0016] Furthermore, a plurality of 3# steel plates perpendicular to the 2# steel plates are arranged on the top side of the column, and the 2# steel plates are fixedly connected to the 3# steel plates.

[0017] Furthermore, 4# steel plates and angle steels are welded to the column top cover beams in sequence to strengthen the connection between the column top cover beams.

[0018] Furthermore, wedge-shaped steel plates and oil felt are filled between the column top cover beam and the supporting longitudinal beam to adjust the cross slope of the bridge.

[0019] Furthermore, a 5# steel plate is welded between the upper and lower flanges of the H-shaped steel supporting the longitudinal beam, and angle steels are welded to the front and rear sides of the 5# steel plate.

[0020] Furthermore, the sleeper is fixedly connected to the bridge deck steel plate via a U-shaped clamp, and the U-shaped clamp is arranged at both ends of the sleeper.

[0021] Furthermore, a gravel-soil transition section is filled between the bridge deck force transmission system and the sleepers within the abutment range of the bridge deck.

[0022] The beneficial effects of the utility model are as follows: first, the support beam reinforces the bottom of the beam, thereby realizing that the bearing capacity problem of the original hollow slab is converted into the bearing capacity problem of the support system when large transport vehicles pass through, effectively eliminating the safety hazards of existing bridges, and giving full play to the advantages of high bearing capacity, short construction period and green environmental protection of steel structure.

[0023] Second, in this solution, the supporting longitudinal beams are connected in the transverse direction by angle steel, which effectively increases the stability of the structure and improves the supporting effect of the supporting longitudinal beams. In addition, by filling the top of the supporting beam with oil felt, the supporting longitudinal beams are subjected to more uniform force.

[0024] Third, transverse sleepers and bridge deck steel plates were installed on the top of the hollow slab of the original bridge, which effectively solved the "single plate stress" problem of the hollow slab beam under the action of overweight wheel load due to the failure of the hinge joint, optimized the lateral stress performance of the hollow slab, and extended the service life of the existing bridge.

[0025] In summary, the temporary reinforcement structure of the present application optimizes the overall stress of the hollow slab bridge when large and overweight vehicles for transport pass through, so that the structure has good stress performance and better economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the elevation structure of the utility model;

[0027] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0028] Figure 3 This is a schematic diagram of the connection between the column and the concrete foundation;

[0029] Figure 4 This is a schematic diagram of the connection between the column and the cap beam;

[0030] Figure 5 Schematic diagram of the transverse connection between the supporting longitudinal beam and the angle steel

[0031] Figure 6 This is a schematic diagram of the connection between the sleeper and the bridge deck steel plate;

[0032] As shown in the figure: foundation 1, column 2, column top cover beam 3, supporting longitudinal beam 4, bridge deck steel plate 5, sleeper 6, gravel soil 7, anchor bolt 8, embedded steel plate 9, 1# steel plate 10, 2# steel plate 11, 3# steel plate 12, 4# steel plate 13, angle steel 14, U-shaped clamp 15, 5# steel plate 16, angle steel 17. DETAILED DESCRIPTION

[0033] The technical solution of the utility model is further described below with reference to the accompanying drawings and through specific embodiments:

[0034] like Figure 1 , Figure 2 As shown, the utility model provides a temporary reinforcement structure for bridges suitable for large-scale transport overweight vehicles, aiming to solve the problem of insufficient bearing capacity of hollow slab bridges when large-scale transport overweight vehicles pass through. The temporary support system under the bridge is mainly composed of a foundation 1, a column 2, a column top cover beam 3, and a supporting longitudinal beam 4. Two columns 2 and one cross beam are arranged in each cross section, and a total of five supporting longitudinal beams 4 are arranged in the transverse direction. The bridge deck force transmission system is composed of a bridge deck steel plate 5, sleepers 6, and crushed stone soil 7.

[0035] like Figure 3 As shown, the supporting column foundation 1 adopts a concrete enlarged foundation, an embedded steel plate 9 is set at the bottom of the column 2, and a 1# steel plate 10 is set on the side of the bottom of the column 2. After the column 2 is welded with the embedded steel plate 9 and the 1# steel plate 10, the foundation and the embedded steel plate 9 are connected by anchor bolts 8, thereby achieving the fixation of the column 2.

[0036] like Figure 4As shown, a 2# steel plate 11 is arranged between the top of the column 2 and the transverse cap beam 3, a 3# steel plate 12 is arranged on the side of the top of the column 2, and a 4# steel plate 13 is arranged on the top of the cap beam 3. First, the 2# steel plate 11 and the 3# steel plate 12 are welded on the top of the column 2, and the supporting strength of the 2# steel plate 11 is enhanced by the 3# steel plate 12. Then the cap beam 3 is welded to the 2# steel plate 11, and finally the 4# steel plate 13 and the angle steel 14 are welded to the column top cap beam 3 in sequence to strengthen the connection between the two column top cap beams 3 and form a plane for placing the supporting longitudinal beam 4.

[0037] like Figure 2 As shown, each hollow slab hinge joint has a supporting longitudinal beam 4 at the bottom. Since the top of the cap beam 3 is horizontal, the bridge cross slope is adjusted by filling a wedge-shaped steel plate and oil felt between the top of the cap beam 3 and the supporting longitudinal beam 4, and the supporting longitudinal beam 4 is supported. A total of 5 supporting longitudinal beams 4 are arranged in the cross section of the bridge. In order to ensure that each supporting longitudinal beam 4 forms a whole in the horizontal direction, firstly, a 5# steel plate 16 is welded between the upper and lower flanges of the H-shaped steel of the supporting longitudinal beam 4, and then 2 angle steels 17 are welded on the front and rear sides of the 5# steel plate 16. The connection is shown in FIG. Figure 5 Before the construction of temporary support under the bridge, the existing hollow slab bridge needs to be pre-lifted. The pre-lifting jacks can be placed on the existing piers and abutments. At the same time, the top of the support beam is leveled with oil felt to ensure that the longitudinal support beam 4 is in close contact with the hollow slab.

[0038] like Figure 2 , Figure 6 As shown, the bridge deck uses a steel plate 5 and sleepers 6 to form a transverse force transmission structure. The sleepers are arranged at a spacing of 65 cm and are arranged perpendicular to the center line of the bridge. The sleepers 6 are laid to extend to the abutment range, and a transition section of crushed stone and soil 7 is filled between the sleepers within the abutment range. A 10m gravel and soil height difference transition section is set at both ends of the sleeper laying range to smoothly connect with the existing road surface. The sleepers 6 and the steel plate 5 are fixedly connected by a U-shaped clamp 15, and the U-shaped clamp 15 is set at both ends of the sleepers 6. The sleepers 6 are arranged horizontally, and a crushed stone and soil 7 leveling layer is set at the bottom of the sleepers 6 to adjust the cross slope of the bridge.

[0039] The specific construction method is:

[0040] Repair of damage to existing bridges: Before construction, the existing hollow slab bridges need to be repaired first to ensure the integrity and safety of the bridge structure.

[0041] Support column foundation 1 construction: The foundation construction of the support columns is then carried out, which usually includes excavating and preparing the foundation area, and then pouring concrete to form the expanded foundation.

[0042] Column 2 installation: After the foundation is completed, the column is installed. A pre-buried steel plate 9 is set at the bottom of the column 2, and a 1# steel plate 10 is set on the side. The column is connected and fixed to the foundation through welding and anchor bolts 8.

[0043] Installation of transverse cap beam 3: After the column is installed and fixed, the transverse cap beam 3 is installed. A 4# steel plate 13 is set on the top of the cap beam 3 and welded with the 2# steel plate 11 and 3# steel plate 12 on the top of the column to enhance the connection strength.

[0044] Pre-lifting of existing bridges: After the support structure is installed, the existing hollow slab bridge is pre-lifted, and jacks are used to lift it on the piers and abutments to ensure that the support beams and the hollow slabs are in close contact.

[0045] Installation of the supporting longitudinal beam 4: After the pre-lifting is completed, the supporting longitudinal beam 4 is installed. The supporting longitudinal beam 4 is arranged in the transverse direction and connected by welding 5# steel plate 16 and angle steel 17 to form a whole.

[0046] Lowering beams of existing bridges: After the supporting longitudinal beams are installed, slowly lower the lifted bridge to ensure that the bridge lands safely on the supporting longitudinal beams.

[0047] Laying of bridge deck sleepers 6 and bridge deck steel plates 5: After the bridge beams are lowered, the construction of the bridge deck force transmission system begins. The bridge deck steel plates 5 are laid, and sleepers 6 are laid on the steel plates, and U-shaped clamps 15 are used to fix the sleepers and the bridge deck steel plates.

[0048] Gravel soil 7 filling at the bridgehead transition section: Finally, the bridgehead transition section is constructed. A 10m gravel soil height difference transition section is set at both ends of the sleepers to connect with the existing road surface, and gravel soil 7 is filled between the sleepers within the abutment to form a transition section.

[0049] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0050] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A temporary reinforcement structure for bridges suitable for transporting large and overweight vehicles, characterized in that: The temporary bridge reinforcement structure includes a temporary support system under the bridge and a bridge deck force transmission system; The temporary support system under the bridge includes: A foundation, wherein the foundation is cast and formed on the ground; A column, wherein the column is fixed on the foundation, and a 2# steel plate is fixed on the top of the column; A column top cover beam, wherein the column top cover beam is fixed to the 2# steel plate of the column; A supporting longitudinal beam, wherein the supporting longitudinal beam is arranged on the top cover beam of the column and supports the bridge deck through the supporting longitudinal beam; The bridge deck force transmission system comprises: Sleepers, the sleepers are evenly laid on the bridge deck; A bridge deck steel plate is fixed on the sleepers.

2. A temporary bridge reinforcement structure suitable for large-scale transportation of overweight vehicles according to claim 1, characterized in that: The fixing method of the column and the foundation is: an embedded steel plate is arranged at the bottom of the column, and the embedded steel plate is connected to the foundation by anchor bolts.

3. A temporary bridge reinforcement structure suitable for large-scale transportation of overweight vehicles according to claim 2, characterized in that: A plurality of 1# steel plates perpendicular to the embedded steel plates are arranged on the bottom side of the column, and the embedded steel plates are fixedly connected to the 1# steel plates.

4. A temporary reinforcement structure for bridges suitable for large-scale transportation of overweight vehicles according to claim 1, characterized in that: A plurality of 3# steel plates perpendicular to the 2# steel plates are arranged on the top side of the column, and the 2# steel plates are fixedly connected to the 3# steel plates.

5. The temporary reinforcement structure of a bridge suitable for large-scale transportation of overweight vehicles according to claim 1, characterized in that: The column top cover beams are welded with 4# steel plates and angle steels in sequence to strengthen the connection between the column top cover beams.

6. A temporary bridge reinforcement structure suitable for large-scale transportation of overweight vehicles according to claim 1, characterized in that: Wedge-shaped steel plates and oil felt are filled between the column top cover beam and the supporting longitudinal beam to adjust the cross slope of the bridge.

7. A temporary bridge reinforcement structure suitable for large-scale transportation of overweight vehicles according to claim 6, characterized in that: A 5# steel plate is welded between the upper and lower flanges of the H-shaped steel supporting the longitudinal beam, and angle steels are welded to the front and rear sides of the 5# steel plate.

8. The temporary reinforcement structure of a bridge suitable for large-scale transportation of overweight vehicles according to claim 1, characterized in that: The sleeper is fixedly connected to the bridge deck steel plate through a U-shaped clamp, and the U-shaped clamp is arranged at both ends of the sleeper.

9. A temporary reinforcement structure for bridges suitable for large-scale transport of overweight vehicles according to any one of claims 1 to 8, characterized in that: A crushed stone soil transition section is filled between the bridge deck force transmission system and the sleepers within the abutment range of the bridge deck.

Images