Non-interruption traffic bridge splicing structure based on supports

Abstract

The utility model discloses an uninterrupted traffic bridge splicing structure based on a support, which belongs to the technical field of bridge widening transformation and comprises a bracket component, a widening bridge concrete cantilever is arranged at one end of the top of the bracket component, a leveling steel plate is placed at the other end of the top of the bracket component, and a plate type rubber support is arranged at the top of the leveling steel plate. An old bridge concrete cantilever is arranged at the top of the plate type rubber support, and a plurality of first end plate type shear rods are arranged at the bottom of an inner cavity of the widened bridge concrete cantilever. The old bridge concrete cantilever, the first end plate type shear rod and the second end plate type shear rod are arranged in a matched mode, so that the old bridge concrete cantilever does not need to be structurally modified when the structure is spliced, the integrity and long-term stability of an old bridge are guaranteed, operation does not need to be conducted on the old bridge concrete cantilever, and the construction cost is reduced. Construction can be carried out under the condition that existing traffic is not interrupted, so that the influence of construction on public travel is greatly reduced, and the construction efficiency is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge widening reconstruction, in particular to a bridge splicing structure based on supports without interrupting traffic. Background Art

[0002] With the continuous improvement of my country's urbanization level, the outward expansion of cities and the process of suburban urbanization have become an inevitable trend. Highway bridge construction has spread to various important links. With the rapid economic development, there is often a need to improve traffic in combination with the characteristics of the region. In recent years, some domestic built bridges need to be renovated due to the increased requirements for under-bridge traffic and navigation. In bridge renovation and expansion projects, the bridge widening method is often used to widen and construct the bridge.

[0003] Patent publication number CN115288045A discloses a flexible widened bridge based on cantilever flange plates, including a main cantilever flange plate, a widened cantilever flange plate separated from the main cantilever flange plate and used to widen the bridge is arranged on the side of the main cantilever flange plate, a connecting device for forming a continuous application surface on the upper surfaces of the main cantilever flange plate and the widened cantilever flange plate is connected between the main cantilever flange plate and the widened cantilever flange plate, the main cantilever flange plate, the widened cantilever flange plate and the connecting device are covered with a UHPC layer, and a bridge deck structure is paved on the UHPC layer. The widened bridge has the advantages of preventing cracking and ensuring flexibility and continuity.

[0004] Patent announcement number CN216809548U discloses a expansion joint device suitable for bridge widening, including a fixed shaft, a plurality of first rotating shafts, a plurality of second rotating shafts, a plurality of first steel sections and a plurality of second steel sections; the length of the fixed shaft is the same as the length of the expansion joint and is fixed in the expansion joint; the plurality of first rotating shafts and the plurality of second rotating shafts can be rotatably sleeved on the fixed shaft, and the plurality of first rotating shafts and the plurality of second rotating shafts are alternately arranged along the axial direction of the fixed shaft; one end of the plurality of first steel sections is respectively welded and fixed to the corresponding first rotating shaft, and the other end of the plurality of first steel sections extends forward and abuts against the first main beam outside. The device is composed of a fixed shaft, a plurality of first rotating shafts, a plurality of second rotating shafts, a plurality of first steel sections and a plurality of second steel sections. When deforming longitudinally, transversely and vertically, the fixed shaft and the rotating shaft rotate relative to each other to drive the steel sections at both ends of the rotating shaft to adapt to the longitudinal, transverse and vertical deformations, thereby ensuring smooth driving.

[0005] For the above two technologies, both require the old bridge to be renovated, which is easy to cause damage to the old bridge. Therefore, a bridge splicing structure without interrupting traffic is proposed. Utility Model Content

[0006] In order to improve the problem that the prior art mentioned above requires reconstruction of old bridges, which is prone to damage to the old bridges, the utility model provides a bridge splicing structure based on supports for non-interrupted traffic.

[0007] The utility model provides a bridge splicing structure without interrupting traffic based on a support, which adopts the following technical scheme:

[0008] A bearing-based uninterrupted traffic bridge splicing structure comprises a corbel assembly, a bridge-widening concrete cantilever is arranged at one end of the top of the corbel assembly, a leveling steel plate is placed at the other end of the top of the corbel assembly, a plate-type rubber bearing is arranged on the top of the leveling steel plate, an old bridge concrete cantilever is arranged on the top of the plate-type rubber bearing, a plurality of first-end plate-type shear rods are arranged at the bottom of the inner cavity of the bridge-widening concrete cantilever, a second-end plate-type shear rod is arranged at one end of the bridge-widening concrete cantilever away from the first-end plate-type shear rod along the horizontal direction of the bridge-widening concrete cantilever, and a connecting plate is arranged at one end of the bridge-widening concrete cantilever close to the old bridge concrete cantilever.

[0009] By adopting the above technical solution, there is no need to carry out structural modification of the concrete cantilever of the old bridge when splicing the structure, thus ensuring the integrity and long-term stability of the old bridge. Since there is no need to operate on the concrete cantilever of the old bridge, construction can be carried out without interrupting existing traffic, which not only greatly reduces the impact of construction on public travel, but also improves construction efficiency and social benefits.

[0010] Optionally, the corbel assembly is mainly composed of a bottom plate, a web plate and a top plate, and is in an I-shaped shape;

[0011] A plurality of reinforcing ribs are arranged between the bottom plate and the top plate.

[0012] By adopting the above technical solution, the overall strength of the corbel assembly is improved, so that the concrete cantilever of the widened bridge and the concrete cantilever of the old bridge can be supported, and the vertical load can be stably endured when vehicles pass by.

[0013] Optionally, the bottom plate and the top plate of the corbel assembly are connected via a web, the web is located at one end between the bottom plate and the top plate, and a plurality of reinforcing ribs are symmetrically arranged on both sides of the web.

[0014] By adopting the above technical solution, a stable and high-strength support structure is formed, which can further support the concrete cantilever of the widened bridge and further improve the bearing capacity of the corbel assembly.

[0015] Optionally, the upper surface of the concrete cantilever of the widened bridge and the upper surface of the concrete cantilever of the old bridge are on the same horizontal line.

[0016] By adopting the above technical solution, the surface of the bridge after splicing is made smooth, thereby improving driving comfort and safety.

[0017] Optionally, the first end plate type shear rod and the second end plate type shear rod both include a plate body and steel bars, and the plate body and the steel bars are welded to each other.

[0018] By adopting the above technical solution, the first end plate shear rod and the second end plate shear rod have simple structures and high connection strength, thereby improving the safety and convenience of the construction process.

[0019] In summary, the present invention has at least one of the following beneficial effects:

[0020] Through the coordinated arrangement of the concrete cantilever of the old bridge, the first end plate shear rod and the second end plate shear rod, the structure does not need to undergo structural modification to the concrete cantilever of the old bridge when being spliced, thereby ensuring the integrity and long-term stability of the old bridge. Since there is no need to operate on the concrete cantilever of the old bridge, construction can be carried out without interrupting existing traffic, which not only greatly reduces the impact of construction on public travel, but also improves construction efficiency and social benefits.

[0021] By setting the leveling steel plate, the joint surface between the concrete cantilever of the widened bridge and the concrete cantilever of the old bridge can be balanced to ensure that the surface of the bridge after splicing is flat, thereby improving driving comfort and safety. In addition, by setting a plate rubber bearing on the top of the leveling steel plate, the plate rubber bearing can adapt to the slight displacement caused by temperature changes and loads, thereby reducing the generation of stress and cracks. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a side view structural schematic diagram of the utility model;

[0025] Figure 3 This is a bottom view of the structure of the bracket assembly of the utility model;

[0026] Figure 4 This is a schematic diagram of the first end plate shear rod structure of the utility model;

[0027] Figure 5 It is a bottom view structural schematic diagram of the first end plate shear rod of the utility model.

[0028] In the figure: 1. Corbel assembly; 101. Bottom plate; 102. Reinforcing rib; 103. Top plate; 104. Web plate; 2. Concrete cantilever of widened bridge; 3. Concrete cantilever of old bridge; 4. Connecting plate; 5. First end plate shear rod; 6. Second end plate shear rod; 7. Plate rubber bearing; 8. Leveling steel plate. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 The utility model is described in further detail.

[0030] Please refer to the attached figure in the instruction manual Figure 1 , Figure 2 and Figure 3 The utility model provides an embodiment: a bridge splicing structure for non-interrupted traffic based on a support, including a corbel assembly 1, one end of the top of the corbel assembly 1 is provided with a widening bridge concrete cantilever 2, the other end of the top of the corbel assembly 1 is placed with a leveling steel plate 8, the top of the leveling steel plate 8 is provided with a plate-type rubber bearing 7, the top of the plate-type rubber bearing 7 is provided with an old bridge concrete cantilever 3, the corbel assembly 1 is mainly composed of a bottom plate 101, a web plate 104 and a top plate 103, and the shape is an I-shaped, and a plurality of reinforcing ribs 102 are provided between the bottom plate 101 and the top plate 103. The overall strength of the corbel assembly 1 is improved, so that the widening bridge concrete cantilever 2 and the old bridge concrete cantilever 3 can be supported, and when a vehicle passes, it can stably bear the vertical load.

[0031] Please refer to the attached figure in the instruction manual Figure 1 The bottom plate 101 and the top plate 103 of the corbel assembly 1 are connected by a web 104, the web 104 is located at one end between the bottom plate 101 and the top plate 103, and a plurality of reinforcing ribs 102 are symmetrically arranged on both sides of the web 104. A stable and high-strength support structure is formed, so as to further support the concrete cantilever 2 of the widened bridge and further improve the bearing capacity of the corbel assembly 1.

[0032] Please refer to the attached figure in the instruction manual Figure 1 The upper surface of the widened bridge concrete cantilever 2 and the upper surface of the old bridge concrete cantilever 3 are on the same horizontal line, making the surface of the spliced ​​bridge smooth, thereby improving the comfort and safety of driving.

[0033] Please refer to the attached figure in the instruction manual Figure 1 and, Figure 2 , Figure 4 and Figure 5A plurality of first end plate shear rods 5 are arranged at the bottom of the inner cavity of the widened bridge concrete cantilever 2, a second end plate shear rod 6 is arranged at one end of the widened bridge concrete cantilever 2 away from the first end plate shear rod 5 along the horizontal direction of the widened bridge concrete cantilever 2, a connecting plate 4 is arranged at one end of the widened bridge concrete cantilever 2 close to the old bridge concrete cantilever 3, the first end plate shear rod 5 and the second end plate shear rod 6 both include a plate body and steel bars, and the plate body and the steel bars are welded and connected. This makes the first end plate shear rod 5 and the second end plate shear rod 6 simple in structure and high in connection strength, thereby improving the safety and convenience of the construction process.

[0034] Working principle: During construction, the widened bridge concrete cantilever 2 is built on the side of the connecting plate 4 away from the old bridge concrete cantilever 3, and the first end plate shear rod 5 and the second end plate shear rod 6 are placed inside the widened bridge concrete cantilever 2, and the widened bridge concrete cantilever 2 is connected and fixed to the corbel assembly 1 through the first end plate shear rod 5, so that the corbel assembly 1 and the widened bridge concrete cantilever 2 are vertically firmly connected, and the widened bridge concrete cantilever 2 is connected and fixed to the corbel assembly 1 through the second end plate shear rod 6, so that the corbel assembly 1 and the widened bridge concrete cantilever 2 are horizontally firmly connected, and through the setting of the leveling steel plate 8, the upper surfaces of the widened bridge concrete cantilever 2 and the old bridge concrete cantilever 3 are on the same horizontal line, ensuring that the surface of the bridge after splicing is flat, thereby improving driving comfort and safety, and at the same time, through the cooperation of the plate rubber bearing 7, the bridge is allowed to expand and contract freely under different temperature and load conditions, reducing stress and cracks caused by temperature changes and bridge movement. During the bridge splicing process, special attention should be paid to the spacing between the bottom of the old bridge concrete cantilever 3 and the top of the top plate 103 in the corbel assembly 1, which should be less than the height of the rubber bearing 7. During splicing, the old bridge concrete cantilever 3 is lifted by a jack so that the rubber bearing 7 can be placed between the top plate 103 and the old bridge concrete cantilever 3. After completing this step, the jack is removed, so that the rubber bearing 7 gradually bears the weight of the bridge and remains in a compressed state. This structure does not require structural modification of the old bridge concrete cantilever 3 during splicing, ensuring the integrity and long-term stability of the old bridge. Since there is no need to operate on the old bridge concrete cantilever 3, construction can be carried out without interrupting existing traffic, which not only greatly reduces the impact of construction on public travel, but also improves the efficiency and social benefits of construction.

[0035] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A bridge splicing structure based on a support for uninterrupted traffic, comprising a bracket assembly (1), characterized in that: A widening bridge concrete cantilever (2) is arranged at one end of the top of the corbel assembly (1), a leveling steel plate (8) is placed at the other end of the top of the corbel assembly (1), a plate-type rubber bearing (7) is arranged at the top of the leveling steel plate (8), an old bridge concrete cantilever (3) is arranged at the top of the plate-type rubber bearing (7), a plurality of first end plate-type shear rods (5) are arranged at the bottom of the inner cavity of the widening bridge concrete cantilever (2), a second end plate-type shear rod (6) is arranged at one end of the widening bridge concrete cantilever (2) away from the first end plate-type shear rod (5) along the horizontal direction of the widening bridge concrete cantilever (2), and a connecting plate (4) is arranged at one end of the widening bridge concrete cantilever (2) close to the old bridge concrete cantilever (3).

2. The bridge splicing structure based on a support without interrupting traffic according to claim 1 is characterized in that: The bracket assembly (1) is mainly composed of a bottom plate (101), a web plate (104) and a top plate (103), and is in an I-shaped shape; A plurality of reinforcing ribs (102) are arranged between the bottom plate (101) and the top plate (103).

3. The bridge splicing structure based on a support without interrupting traffic according to claim 2 is characterized in that: The bottom plate (101) and the top plate (103) of the corbel assembly (1) are connected via a web (104), the web (104) being located at one end between the bottom plate (101) and the top plate (103), and a plurality of reinforcing ribs (102) being symmetrically arranged on both sides of the web (104).

4. The bridge splicing structure based on a support without interrupting traffic according to claim 1 is characterized in that: The upper surface of the widened bridge concrete cantilever (2) and the upper surface of the old bridge concrete cantilever (3) are on the same horizontal line.

5. The bridge splicing structure based on a support without interrupting traffic according to claim 1 is characterized in that: The first end plate type shear rod (5) and the second end plate type shear rod (6) both comprise a plate body and steel bars, and the plate body and the steel bars are welded to each other.

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