Temporary protection structure for overpass highway bridge maintenance

Abstract

The utility model relates to the field of overpass expressway bridge maintenance, and discloses a temporary protection structure for overpass expressway bridge maintenance, which comprises a bridge pile and hoops, the outer part of the bridge pile is fixedly connected with double layers of hoops from top to bottom, the hoops are internally provided with preformed grooves, C-shaped steel is assembled in the preformed grooves, and the C-shaped steel is fixedly connected with the hoops. And inclined rods are obliquely supported between the C-shaped steel and the bridge piles. According to the temporary protection structure for overpass expressway bridge maintenance, the hoops and the bridge piles are connected to form a triangular mechanical structure through the arrangement of the hoops and the inclined rods, external force is effectively dispersed and transmitted to a plurality of supporting points, six sets of supporting piles are supported to the ground, the whole protection structure forms a multi-point supporting system, the bearing capacity and the anti-overturning capacity are improved, and the service life is prolonged. The condition that stress on a single supporting point is too large is reduced, especially in the overspan construction period of the expressway bridge, the supporting device can adapt to dynamic changes of loads of the bridge above, and the problem of supporting collapse caused by local stress is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of overpass highway bridge maintenance, in particular to a temporary protection structure for overpass highway bridge maintenance. BACKGROUND

[0002] In the process of overpass construction and bridge maintenance of the highway bridge, in order to ensure the safety of the construction personnel and equipment, it is usually necessary to set up a temporary protection structure to avoid interference with the driving of the lower highway. The maintenance operation of the overpass bridge usually involves high-altitude operation and movement of large equipment, so the temporary protection structure must have good bearing capacity to avoid structural instability caused by overload, while ensuring safety during construction.

[0003] The common temporary protection structure at present adopts single-layer support or simple vertical support, and has poor bearing capacity and overturning resistance. Since the support structure has fewer stress points, the load above the bridge is often concentrated on a few support points, causing excessive local pressure and easily causing the support structure to collapse or deform. The overall stability is insufficient, and only a short construction period can be met, which threatens the safety of the vehicles driving on the lower highway.

[0004] Therefore, a temporary protection structure for overpass highway bridge maintenance is needed to solve the above technical defects. SUMMARY

[0005] The utility model aims at providing a temporary protection structure for overpass highway bridge maintenance to solve the problem of support collapse caused by local pressure as mentioned in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a temporary protection structure for overpass highway bridge maintenance, comprising bridge piles and hoops, the bridge piles are fixedly connected with double-layer hoops from top to bottom outside, the hoops are provided with a reserved slot inside, a C-shaped steel is assembled in the reserved slot, the C-shaped steel and the bridge piles are obliquely supported by a diagonal rod at the support point, an extension frame is welded to the C-shaped steel at the second layer of hoops, a support pile is obliquely supported between the first layer of C-shaped steel and the ground, and the support pile is fixedly connected with a foundation bolt at the bottom end.

[0007] As a further technical scheme of the utility model, the C-shaped steel and the bridge piles are respectively fixed with a fixed plate at the support point of the diagonal rod, and the fixed plate is fixedly connected with an angle bolt at the four corners.

[0008] As a further technical scheme of the utility model, the C-shaped steel is split type, comprising a group of vertical insertion slots and two groups of horizontal fin plates, the insertion slots are provided with a beam plate at the top end and the bottom end, the fin plates are provided with a wing plate at the bottom end, the wing plates are respectively embedded in the beam plates and welded, and the fin plates are respectively provided with a groove for fixing the fixed plate.

[0009] As a further technical scheme of the utility model, six groups are respectively arranged on the upper and lower edges of the hoop, and the diagonal rods are arranged at equal intervals around the bridge pile.

[0010] As a further technical scheme of the utility model, the extension frame is arranged in parallel with the hoop, and the extension frame is welded and fixed to the support pile.

[0011] As a further technical scheme of the utility model, the inner wall of the hoop is fixedly connected with an H-shaped steel, one end of the H-shaped steel close to the bridge pile is fixedly connected with a welding plate, and the H-shaped steel and the welding plate are arranged perpendicularly.

[0012] As a further technical scheme of the utility model, eight groups of welding plates are arranged in each layer of the hoop, and the welding plates in each group are all concave arc surfaces.

[0013] As a further technical scheme of the utility model, eight groups of H-shaped steels are arranged in the hoop, reinforcing bars are cross-welded between the two adjacent groups of H-shaped steels, welding seats are fixedly connected between the reinforcing bars and the bridge pile, and the welding seats and the welding plates are arranged staggeredly.

[0014] Compared with the prior art, the utility model has the beneficial effects that the temporary protection structure for maintaining the overpass highway bridge not only realizes a multi-point support system, adapts to the dynamic change of the load of the upper bridge construction, realizes the shear resistance and tensile resistance of the connection, ensures the long-term stress balance of the protection structure, and facilitates local repair without affecting the overall structure, thereby reducing the construction cost.

[0015] (1) By arranging the hoop, the bridge pile, the diagonal rod and the support pile, the protection structure takes the hoop as the support main body, is a double-layer protection structure, the diagonal rod connects the hoop and the bridge pile to form a triangular mechanical structure, effectively disperses the external force to multiple support points, six groups of support piles support the ground, so that the overall protection structure forms a multi-point support system, improves the bearing capacity and the anti-overturning capacity, reduces the situation that a single support point is stressed too much, avoids the support collapse problem caused by local pressure, and especially during the overpass construction of the highway bridge, the dynamic change of the load of the upper bridge can be adapted.

[0016] (2) By arranging the hoop, the bridge pile, the H-shaped steel and the reinforcing bar, the hoop and the bridge pile are designed as a concentric structure, the H-shaped steel is used as a connecting component of the two, and the reinforcing bars are cross-welded between the adjacent H-shaped steels to fill, improve the overall strength, the cross-welded reinforcing bars not only uniformly disperse the pressure from the bridge pile, but also enhance the shear resistance and tensile resistance of the connection, so that the long-term stress balance of the protection structure is ensured.

[0017] (3) By providing C-shaped steel, diagonal rods, support piles and slots, the C-shaped steel serves as the main connecting component of the diagonal rods and support piles, which realizes the rapid assembly and disassembly function of the connecting components. Once a group of diagonal rods or support piles shakes or deforms due to external forces, they can be quickly disassembled and replaced separately for local repair without affecting the overall structure, thereby reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0019] Figure 2 This is a schematic diagram of the top view of the hoop structure of the utility model;

[0020] Figure 3 This is an enlarged schematic diagram of the C-shaped steel of the present utility model;

[0021] Figure 4 For the utility model Figure 1 A in the middle is a schematic diagram of the enlarged structure viewed from the front.

[0022] In the figure: 1. Fixing plate; 2. Angle bolt; 3. Diagonal rod; 4. C-shaped steel; 5. Extension frame; 6. Support pile; 7. Anchor; 8. Hoop; 9. Bridge pile; 10. H-shaped steel; 11. Welding plate; 12. Welding seat; 13. Reinforcement bar; 14. Groove; 15. Fin plate; 16. Wing plate; 17. Beam plate; 18. Slot. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-4, the utility model provides an embodiment: a temporary protective structure for maintenance of a bridge across a highway, including a bridge pile 9 and a hoop 8, the outside of the bridge pile 9 is fixedly connected with a double-layer hoop 8 from top to bottom, a reserved groove is opened inside the hoop 8, a C-shaped steel 4 is assembled in the reserved groove, an oblique rod 3 is obliquely supported between the C-shaped steel 4 and the bridge pile 9, an extension frame 5 is welded to the C-shaped steel 4 on the second layer of hoop 8, a support pile 6 is obliquely supported between the first layer of C-shaped steel 4 and the ground, the bottom end of the support pile 6 is fixedly connected to the ground with a footing 7, the C-shaped steel 4 and the bridge pile 9 are respectively fixed with a fixing plate 1 at the support point of the oblique rod 3, the four corners of the fixing plate 1 are fixedly connected with an angle bolt 2, six groups of oblique rods 3 are respectively arranged on the upper and lower edges of the hoop 8, the oblique rods 3 are arranged at equal intervals around the bridge pile 9, the extension frame 5 is arranged parallel to the hoop 8, and the extension frame 5 is welded and fixed to the support pile 6;

[0025] Specifically, if Figure 1 、 Figure 2 and Figure 4 As shown, the protective structure uses the hoop 8 as the main supporting body and is a double-layer protective structure. According to the height of the bridge pile 9, multiple groups of inclined rods 3 are distributed around the top and bottom edges. The inclined rods 3 connect the hoop 8 and the bridge pile 9 to form a triangular mechanical structure, which effectively disperses the external force and transmits it to multiple support points. At the same time, six groups of supporting piles 6 are set on the periphery of the hoop 8 to support the ground, so that the overall protective structure forms a multi-point support system, which improves the load-bearing capacity and anti-overturning ability, and reduces the situation where a single support point is subjected to excessive force.

[0026] An H-shaped steel 10 is fixedly connected to the inner wall of the hoop 8. A welding plate 11 is fixedly connected to the end of the H-shaped steel 10 near the bridge pile 9. The H-shaped steel 10 and the welding plate 11 are arranged perpendicularly. Eight groups of welding plates 11 are respectively provided on each layer of the hoop 8. The surface of each group of welding plates 11 facing the bridge pile 9 is a concave arc surface. Eight groups of H-shaped steel 10 are arranged inside the hoop 8. Reinforcement ribs 13 are cross-welded between adjacent groups of H-shaped steel 10. A welding seat 12 is fixedly connected between the reinforcement rib 13 and the bridge pile 9. The welding seat 12 and the welding plate 11 are staggered.

[0027] Specifically, if Figure 1 and Figure 2 As shown, the hoop 8 and the bridge pile 9 are designed as a concentric circle structure, with H-shaped steel 10 as the connecting component between the two, and multiple groups of cross-welded reinforcement bars 13 are filled between adjacent H-shaped steels 10 to improve the overall strength. The cross-welded reinforcement bars 13 can not only evenly disperse the pressure from the bridge pile 9, but also enhance the shear and tensile resistance of the connection, ensuring long-term balanced force on the protective structure.

[0028] The C-shaped steel 4 is split, and includes a set of vertical slots 18 and two sets of horizontal fins 15. The top and bottom ends of the slots 18 are provided with beam plates 17. The bottom ends of the fins 15 are provided with wing plates 16. The wing plates 16 are respectively embedded in the beam plates 17 and welded fixed. The surface of the fin plates 15 is processed with grooves 14 for fixing the fixing plate 1.

[0029] Specifically, if Figure 1 and Figure 3 As shown, the C-shaped steel 4 serves as the main connecting component of the diagonal rod 3 and the supporting pile 6, including a group of slots 18 and two groups of fin plates 15, which adopt a mosaic connection and provide a fixing point for the fixing plate 1 at the groove 14, thereby realizing the rapid assembly and disassembly function of the connecting component. When the diagonal rod 3 and the supporting pile 6 are subjected to structural stress or the construction environment changes, once a group of diagonal rods 3 or supporting piles 6 shakes or deforms due to external force, they can be quickly disassembled and replaced separately for local repair without affecting the overall structure.

[0030] Working principle: The protective structure uses the hoop 8 as the main support body and is a double-layer protective structure. According to the height of the bridge pile 9, multiple groups of inclined rods 3 are distributed around the top and bottom edges. The inclined rods 3 connect the hoop 8 and the bridge pile 9 to form a triangular mechanical structure, which effectively disperses the external force and transmits it to multiple support points. At the same time, six groups of supporting piles 6 are set on the periphery of the hoop 8 to support the ground, so that the overall protective structure forms a multi-point support system, which improves the load-bearing capacity and anti-overturning ability, and reduces the situation where a single support point is subjected to excessive force. The hoop 8 and the bridge pile 9 are designed as a concentric circle structure, and the H-shaped steel 10 is used as the connecting component between the two, and the adjacent H-shaped steel The spaces between the bridge members 10 are filled with a plurality of cross-welded reinforcement bars 13 to improve the overall strength. The cross-welded reinforcement bars 13 can not only evenly disperse the pressure from the bridge piles 9, but also enhance the shear and tensile strength of the connection, ensuring that the protective structure is subjected to long-term force balance. The C-shaped steel 4 serves as the main connecting component of the diagonal rods 3 and the supporting piles 6, realizing the rapid assembly and disassembly function of the connecting component. When the structural stress or construction environment of the diagonal rods 3 and the supporting piles 6 changes, once a group of diagonal rods 3 or supporting piles 6 shakes or deforms due to external forces, they can be quickly disassembled and replaced individually for local repair without affecting the overall structure.

[0031] It will be apparent 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 essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A temporary protective structure for maintaining a bridge over a highway, comprising a bridge pile (9) and a hoop (8), characterized in that: The bridge pile (9) is fixedly connected with a double-layer hoop (8) from top to bottom on the outside, a reserved groove is opened inside the hoop (8), a C-shaped steel (4) is assembled in the reserved groove, an oblique rod (3) is obliquely supported between the C-shaped steel (4) and the bridge pile (9), an extension frame (5) is welded to the C-shaped steel (4) on the second layer of hoop (8), a support pile (6) is obliquely supported between the first layer of C-shaped steel (4) and the ground, and a footing (7) is fixedly connected to the ground at the bottom end of the support pile (6).

2. A temporary protective structure for maintenance of a bridge over a highway according to claim 1, characterized in that: The C-shaped steel (4) and the bridge pile (9) are respectively fixed with fixed plates (1) at the supporting points of the diagonal rod (3), and the four corners of the fixed plate (1) are fixedly connected with corner bolts (2).

3. The temporary protective structure for maintenance of a bridge over a highway according to claim 1, characterized in that: The C-shaped steel (4) is of split type, comprising a group of vertical slots (18) and two groups of horizontal fin plates (15), the top and bottom ends of the slots (18) are both provided with beam plates (17), the bottom ends of the fin plates (15) are both provided with wing plates (16), the wing plates (16) are respectively embedded in the beam plates (17) and welded and fixed, and the surfaces of the fin plates (15) are each processed with grooves (14) for fixing the fixing plate (1).

4. The temporary protective structure for maintenance of a bridge over a highway according to claim 1, characterized in that: Six groups of the inclined rods (3) are respectively provided on the upper and lower edges of the hoop (8), and the inclined rods (3) are arranged at equal intervals around the bridge piles (9).

5. The temporary protective structure for maintenance of a bridge over a highway according to claim 1, characterized in that: The extension frame (5) is arranged in parallel with the hoop (8), and the extension frame (5) is fixed to the support pile (6) by welding.

6. The temporary protective structure for maintenance of a bridge over a highway according to claim 1, characterized in that: The inner wall of the hoop (8) is fixedly connected to an H-shaped steel (10), and one end of the H-shaped steel (10) close to the bridge pile (9) is fixedly connected to a welding plate (11), and the H-shaped steel (10) and the welding plate (11) are arranged vertically.

7. The temporary protective structure for maintenance of a bridge over a highway according to claim 6, characterized in that: The welding plates (11) are provided in eight groups on each layer of hoop (8), and the surfaces of each group of welding plates (11) facing the bridge piles (9) are all concave arc surfaces.

8. The temporary protective structure for maintenance of a bridge over a highway according to claim 6, characterized in that: Eight groups of H-shaped steel (10) are arranged in the hoop (8), and reinforcing ribs (13) are cross-welded between two adjacent groups of H-shaped steel (10). A welding seat (12) is fixedly connected between the reinforcing rib (13) and the bridge pile (9), and the welding seat (12) and the welding plate (11) are staggered.

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