Non-interruption traffic bridge splicing structure based on slide fasteners

Abstract

The utility model discloses an uninterrupted traffic bridge splicing structure based on a slide fastener, which belongs to the technical field of bridge construction and comprises an old bridge concrete cantilever, a widened bridge concrete cantilever is arranged on one side of the old bridge concrete cantilever, and a concrete body is poured on the surface of the old bridge concrete cantilever. First anchoring steel bars are arranged in the concrete body, second anchoring steel bars are arranged in the concrete cantilever of the spliced bridge, the ends, close to each other, of the first anchoring steel bars and the second anchoring steel bars are connected with steel hook plates, and steel sliding buckle strips are arranged between the concrete body and the concrete cantilever of the spliced bridge. The two sets of steel hook plates are located on the two sides in the steel sliding buckle strip. The concrete body is poured on the surface of the concrete cantilever of the old bridge, large-scale transformation on the old bridge is avoided, the structural integrity of the old bridge is protected, the concrete body, the steel sliding buckle strip and the steel hook plate are all common materials, cost is reduced, and economic benefits are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a non-interruption traffic bridge splicing structure based on sliding buckles. Background Art

[0002] With the rapid development of social economy, the scale of urban roads has continued to expand. The technical conditions of a considerable number of bridges built in the early days can no longer meet the new transportation needs. There are widespread problems such as weak transportation functions and low traffic capacity, forming a "bottleneck" in the urban road network, seriously affecting the smooth flow of urban traffic, and becoming a traffic jam point and a frequent site of traffic accidents. In order to promote economic development and meet the growing traffic demand, it is necessary to widen and renovate the existing bridges.

[0003] Patent publication number CN115288045A discloses a flexible, cantilever-flange-based bridge. The bridge comprises a main cantilever flange, separated from the main cantilever flange by a widening cantilever flange, used to widen the bridge. A connecting device connects the main and widening cantilever flanges, forming a continuous construction surface between their upper surfaces. The main cantilever flanges, the widening cantilever flanges, and the connecting device are covered with a UHPC layer, upon which the bridge deck structure is laid. This bridge has the advantages of preventing cracking and ensuring flexibility and continuity.

[0004] Patent publication number CN216809548U discloses an expansion joint device suitable for bridge widening, comprising 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 fixed shaft has a length equal to the length of the expansion joint and is fixed within the expansion joint. The plurality of first rotating shafts and the plurality of second rotating shafts are both rotatably mounted 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 welded to the corresponding first rotating shaft, and the other ends of the plurality of first steel sections extend forward and abut against the external first main beam. This device, comprising 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, rotates relative to each other during longitudinal, transverse, and vertical deformation, driving the steel sections at both ends of the rotating shafts to adapt to the longitudinal, transverse, and vertical deformations, thereby ensuring smooth driving.

[0005] The above two patents still have some shortcomings: for the first patent, the price of UHPC is relatively high; for the second patent, the expansion joint is easily damaged and has low durability; for the above two technologies, the old bridge needs to be renovated, which is easy to cause damage to the old bridge. Utility Model Content

[0006] In order to improve the above-mentioned problem that old bridges need to be renovated and easily damaged, the utility model provides a bridge splicing structure based on sliding buckles that does not interrupt traffic.

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

[0008] A sliding buckle-based uninterrupted traffic bridge splicing structure includes an old bridge concrete cantilever, a widened bridge concrete cantilever is provided on one side of the old bridge concrete cantilever, a concrete body is cast on the surface of the old bridge concrete cantilever, a first anchor steel bar is provided inside the concrete body, a second anchor steel bar is provided inside the widened bridge concrete cantilever, the first anchor steel bar and the second anchor steel bar are connected to each other at one end with a steel hook plate, a steel sliding buckle strip is provided between the concrete body and the widened bridge concrete cantilever, and two groups of the steel hook plates are located on both sides of the steel sliding buckle strip.

[0009] By adopting the above technical solution, by pouring the concrete body on the surface of the concrete cantilever of the old bridge, large-scale renovation of the old bridge was avoided, and the structural integrity of the old bridge was protected. By connecting the steel sliding buckle strips and the steel hook plates, a stable flexible connection was formed, and the integration of the concrete cantilever structure of the old bridge and the concrete cantilever structure of the widened bridge was realized. In addition, the concrete body, steel sliding buckle strips and steel hook plates are all common materials, which reduces costs and improves economic benefits.

[0010] Optionally, a plurality of serrations are provided at the connection between the concrete cantilever and the concrete body of the old bridge.

[0011] By adopting the above technical solution, the bonding force between the concrete cantilever of the old bridge and the concrete body can be easily enhanced, making the connection between the concrete cantilever of the old bridge and the concrete body more firmly.

[0012] Optionally, the first anchoring steel bar includes an upper anchoring bar, which is arranged at the upper end inside the concrete body, and a lower anchoring bar is arranged at the lower end inside the concrete body, and the left ends of the upper anchoring bar and the lower anchoring bar both extend out of the concrete body and are fixedly connected to the steel hook plate at the right end.

[0013] By adopting the above technical solution, the upper anchoring bars and the lower anchoring bars cooperate with each other, thereby enhancing the crack resistance of the concrete body.

[0014] Optionally, a leveling layer is provided on the top of the concrete cantilever of the widened bridge, and the upper surface of the leveling layer is on the same horizontal plane as the upper surface of the concrete body.

[0015] By adopting the above technical solution, the surface of the bridge after splicing is ensured to be smooth.

[0016] Optionally, the surfaces of the steel sliding buckle strip and the steel hook plate are coated with a polyethylene anti-corrosion layer.

[0017] By adopting the above technical solution, the corrosion resistance of the steel sliding buckle strip and the steel hook plate is improved, thereby extending the service life of the steel sliding buckle strip and the steel hook plate.

[0018] Optionally, a plurality of steel hook plates are provided along the length direction of the steel sliding buckle strip, and the plurality of steel hook plates are symmetrically distributed in pairs with respect to the center of the steel sliding buckle strip.

[0019] By adopting the above technical solution, structural integration is achieved, and the stability of the connection between the steel sliding buckle strip and the steel hook plate is improved.

[0020] In summary, the present invention has at least one of the following beneficial effects:

[0021] By pouring the concrete body on the surface of the old bridge's concrete cantilever, large-scale renovation of the old bridge was avoided, and the structural integrity of the old bridge was protected. In addition, the concrete body, steel sliding buckle strips and steel hook plates are all made of common materials, which reduces costs and improves economic benefits.

[0022] By connecting the steel sliding buckle strips and the steel hook plates, a stable and flexible connection is formed, realizing the integration of the concrete cantilever structure of the old bridge and the concrete cantilever structure of the widened bridge, thereby improving the stability of the connection between the concrete cantilever of the old bridge and the concrete cantilever of the widened bridge, and the bridge widening operation can be completed without interfering with existing traffic. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the top structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the steel sliding buckle strip structure of the present utility model.

[0027] In the figure: 1. Concrete cantilever of the old bridge; 101. Serrated part; 2. Concrete body; 3. First anchor bar; 301. Upper anchor bar; 302. Lower anchor bar; 4. Concrete cantilever of the widened bridge; 5. Leveling layer; 6. Second anchor bar; 7. Steel slide bar; 8. Steel hook plate. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 The utility model is described in further detail.

[0029] Please refer to the attached figure in the instruction manual Figure 1 The utility model provides an embodiment: a sliding buckle-based uninterrupted traffic bridge splicing structure, comprising an old bridge concrete cantilever 1, a widened bridge concrete cantilever 4 is provided on one side of the old bridge concrete cantilever 1, a concrete body 2 is cast on the surface of the old bridge concrete cantilever 1, and a plurality of serrations 101 are provided at the connection between the old bridge concrete cantilever 1 and the concrete body 2. It is convenient to enhance the bonding force between the old bridge concrete cantilever 1 and the concrete body 2, so that the connection between the old bridge concrete cantilever 1 and the concrete body 2 is more firmly established. A leveling layer 5 is provided on the top of the widened bridge concrete cantilever 4, and the upper surface of the leveling layer 5 is on the same horizontal plane as the upper surface of the concrete body 2. Ensure that the surface of the bridge is flat after splicing.

[0030] Please refer to the attached figure in the instruction manual Figure 1 A first anchoring bar 3 is installed inside the concrete body 2, and a second anchoring bar 6 is installed inside the widened concrete cantilever 4. The first and second anchoring bars 3, 6 are connected to a steel hook plate 8 at their respective ends. The first anchoring bar 3 includes an upper anchor bar 301, which is installed at the upper end of the concrete body 2. A lower anchor bar 302 is installed at the lower end of the concrete body 2. The left ends of the upper and lower anchor bars 301, 302 both extend out of the concrete body 2 and are fixedly connected to the steel hook plate 8 at their right ends. The interaction between the upper and lower anchor bars 301, 302 enhances the crack resistance of the concrete body 2.

[0031] Please refer to the attached figure in the instruction manual Figure 1 、 Figure 2 and Figure 3A steel sliding buckle bar 7 is installed between the concrete body 2 and the concrete cantilever 4 of the widened bridge. Two sets of steel hook plates 8 are located on both sides of the steel sliding buckle bar 7. The surfaces of the steel sliding buckle bar 7 and the steel hook plates 8 are coated with a polyethylene anti-corrosion layer. This improves the corrosion resistance of the steel sliding buckle bar 7 and the steel hook plates 8, thereby extending the service life of the steel sliding buckle bar 7 and the steel hook plates 8. Several steel hook plates 8 are arranged along the length of the steel sliding buckle bar 7, and the steel hook plates 8 are symmetrically distributed in pairs about the center of the steel sliding buckle bar 7. This achieves structural integration and improves the stability of the connection between the steel sliding buckle bar 7 and the steel hook plates 8.

[0032] Working principle: When splicing is required, slide the steel hook plate 8 at the end of the second anchor bar 6 into the left side of the steel sliding buckle strip 7, and slide the steel hook plate 8 at the end of the upper anchor bar 301 and the lower anchor bar 302 into the right side of the steel sliding buckle strip 7 to form a stable flexible connection, thereby realizing the integration of the old bridge concrete cantilever 1 and the widened bridge concrete cantilever 4 structure, thereby improving the stability of the connection between the old bridge concrete cantilever 1 and the widened bridge concrete cantilever 4.

[0033] Then, the concrete body 2 is poured on the surface of the concrete cantilever 1 of the old bridge, avoiding large-scale renovation on the old bridge and protecting the structural integrity of the old bridge. At the same time, by setting the leveling layer 5 and making the upper surface of the leveling layer 5 and the upper surface of the concrete body 2 on the same horizontal plane, the surface of the bridge after splicing is ensured to be flat, ensuring smooth driving. In addition, the concrete body 2, steel sliding buckle strip 7 and steel hook plate 8 are all made of common materials, which reduces costs and improves economic benefits.

[0034] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bridge splicing structure for non-interrupted traffic based on a sliding buckle, comprising an old bridge concrete cantilever (1), a widened bridge concrete cantilever (4) being provided on one side of the old bridge concrete cantilever (1), and characterized in that: A concrete body (2) is cast on the surface of the concrete cantilever (1) of the old bridge, a first anchoring steel bar (3) is arranged inside the concrete body (2), a second anchoring steel bar (6) is arranged inside the concrete cantilever (4) of the widened bridge, a steel hook plate (8) is connected to the ends of the first anchoring steel bar (3) and the second anchoring steel bar (6) that are close to each other, a steel sliding buckle strip (7) is arranged between the concrete body (2) and the concrete cantilever (4) of the widened bridge, and two groups of the steel hook plates (8) are located on both sides of the steel sliding buckle strip (7).

2. The bridge splicing structure without traffic interruption based on sliding buckles according to claim 1, characterized in that: A plurality of serrated portions (101) are provided at the connection between the concrete cantilever (1) of the old bridge and the concrete body (2).

3. The bridge splicing structure without traffic interruption based on sliding buckles according to claim 1, characterized in that: The first anchoring steel bar (3) comprises an upper anchoring bar (301), wherein the upper anchoring bar (301) is arranged at the upper end inside the concrete body (2), and a lower anchoring bar (302) is arranged at the lower end inside the concrete body (2), and the left ends of the upper anchoring bar (301) and the lower anchoring bar (302) both extend out of the concrete body (2) and are fixedly connected to the steel hook plate (8) at the right end.

4. The bridge splicing structure without traffic interruption based on sliding buckles according to claim 1, characterized in that: A leveling layer (5) is provided on the top of the widened bridge concrete cantilever (4), and the upper surface of the leveling layer (5) is on the same horizontal plane as the upper surface of the concrete body (2).

5. The bridge splicing structure without traffic interruption based on sliding buckles according to claim 1 is characterized by: The surfaces of the steel sliding buckle strip (7) and the steel hook plate (8) are both coated with a polyethylene anti-corrosion layer.

6. The bridge splicing structure without traffic interruption based on sliding buckles according to claim 1, characterized in that: A plurality of the steel hook plates (8) are provided along the length direction of the steel sliding buckle strip (7), and the plurality of the steel hook plates (8) are symmetrically distributed in pairs about the center of the steel sliding buckle strip (7).

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