Connecting structure between bridge plate girders

Abstract

The utility model provides a connecting structure between bridge body plate girders. Each plate girder comprises a girder body and a hollow hole which is located in the girder body and extends in the longitudinal direction. Embedded steel bars are arranged in the beam body; the embedded steel bars comprise side steel bars and bottom steel bars; the side steel bars are located in the side portions, needing to be connected, of the beam body, and the upper ends of the side steel bars extend out of the side portions of the beam body. The bottom steel bars are located at the bottoms of the beam bodies, stretch out of the side faces of the beam bodies and enter the space between the beam bodies. The side steel bars and the bottom steel bars are arranged at intervals in the longitudinal direction of the beam body. Top interconnection steel bars are arranged between the adjacent beam bodies, and a middle steel bar set is arranged in the space between the adjacent beam bodies. The two ends of the top interconnection reinforcing steel bars are connected with the top ends of the side reinforcing steel bars of the adjacent beam bodies in a welded mode. And concrete is poured into the space between the beam bodies and the tops of all the beam bodies to form a masonry between the integrally constructed beam bodies and a bridge floor structure at the tops of all the beam bodies and the masonry. The structure can reinforce the transverse connection between the plate beam bodies.

Description

Technical Field

[0001] This utility model relates to a beam connection structure, and more particularly to a bridge deck beam connection structure. Background Technology

[0002] Currently, smooth-surfaced formwork is often used when prefabricating hollow slab beams at beam yards. This results in relatively smooth sidewalls of the slab beams, leading to insufficient tightness in the connection between the masonry and the slab beams during on-site casting of the inter-beam connection structure. In recent years, there have been numerous cases of concrete spalling between beams, primarily due to damage to the bridge deck waterproofing layer and cracking of the inter-beam concrete. Rainwater seeps into the inter-beam concrete, causing damage to the transverse connection structure, reducing the bridge's load-bearing capacity, accelerating the development of superstructure defects, and ultimately leading to concrete spalling between beams and longitudinal through cracks in the bridge deck and driveway. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a bridge slab-beam connection structure that strengthens the lateral connection between slab-beams and improves the load-bearing capacity of the masonry between slab-beams. To achieve the above technical objectives, the technical solution adopted in this utility model embodiment is as follows:

[0004] This utility model embodiment provides a bridge deck beam connection structure, wherein the deck beam includes a beam body and a hollow hole extending longitudinally in the beam body;

[0005] The beam is provided with pre-embedded reinforcing bars; the pre-embedded reinforcing bars include side reinforcing bars and bottom reinforcing bars; the side reinforcing bars are located in the sides of the beam that need to be interconnected, and their upper ends extend out of the side of the beam; the bottom reinforcing bars are located at the bottom of the beam and extend out of the side of the beam, entering the space between the beams; the side reinforcing bars and the bottom reinforcing bars are both arranged at intervals along the longitudinal direction of the beam.

[0006] Top interconnecting steel bars are provided between adjacent beams, and intermediate steel bar groups are provided in the space between adjacent beams; the two ends of the top interconnecting steel bars are respectively welded to the top of the side steel bars of the adjacent beams.

[0007] The spaces between the beams and the tops of all the beams are filled with concrete to form a monolithic masonry structure between the beams and a bridge deck structure on top of all the beams and the masonry.

[0008] Furthermore, the side reinforcement is a first rectangular reinforcement, and the length direction of the first rectangular reinforcement is arranged vertically along the side of the beam.

[0009] Furthermore, prestressed steel bars are provided at the bottom of each beam.

[0010] Furthermore, the intermediate reinforcement group includes a second rectangular reinforcement, transverse reinforcement, and longitudinal reinforcement; the second rectangular reinforcement is arranged longitudinally at intervals in the space between the beams, and several transverse reinforcements are arranged between the two vertical sides of each second rectangular reinforcement, and the two ends of each transverse reinforcement are tied to the two vertical sides of the second rectangular reinforcement; in the space between the beams, the longitudinal reinforcement is divided into two columns, extending longitudinally along the space between the beams; each column of longitudinal reinforcement has several bars distributed vertically at intervals, and the two columns of longitudinal reinforcement are tied to the two vertical sides of the second rectangular reinforcement respectively.

[0011] Furthermore, the top interconnecting steel bars are tied together with the two vertical sides of the second rectangular steel bars.

[0012] Furthermore, the bottom reinforcement includes a first bottom reinforcement and a second bottom reinforcement; the first bottom reinforcement extends laterally at the bottom of the beam, enters the space between the beams, and then extends obliquely upward; the second bottom reinforcement extends obliquely upward at the bottom of the beam, enters the space between the beams, and then extends laterally.

[0013] Furthermore, in the lower part of the masonry, there are perforations along the longitudinal direction, and post-tensioned prestressed steel strands are installed in the perforations.

[0014] Furthermore, the sides of the beams that need to be interconnected are also provided with grooves, which extend longitudinally.

[0015] Furthermore, the opposite sides of two adjacent beams are inclined planes, and the upper part of the inclined planes slopes towards the middle of the space between the adjacent beams.

[0016] The beneficial effects of the technical solution provided by this utility model embodiment are:

[0017] 1) It enhances the lateral connection between beams.

[0018] 2) It improves the load-bearing capacity of the masonry between beams. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the connection structure between the slab and beam without showing the intermediate steel reinforcement group and the concrete pouring in the embodiment of this utility model.

[0020] Figure 2 This is a schematic diagram of the connection structure between the plate and beam in an embodiment of this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] like Figure 1 and Figure 2 As shown, this utility model embodiment proposes a bridge deck beam connection structure, the deck beam including beam 1 and hollow hole 2 extending longitudinally in beam 1; in this embodiment, the length direction of the bridge body is longitudinal; the height direction of the bridge body is vertical; and the width direction of the bridge body is transverse.

[0023] The beam 1 is provided with embedded reinforcing bars; the embedded reinforcing bars include side reinforcing bars 101 and bottom reinforcing bars 102; the side reinforcing bars 101 are located in the sides of the beam 1 that need to be interconnected, and their upper ends extend out of the side of the beam 1; the bottom reinforcing bars 102 are located at the bottom of the beam, and extend out of the side of the beam 1 and enter the space between the beams 1; the side reinforcing bars 101 and the bottom reinforcing bars 102 are both arranged at intervals along the longitudinal direction of the beam 1;

[0024] A top interconnecting steel bar 3 is provided between adjacent beams 1, and an intermediate steel bar group 4 is provided in the space between adjacent beams 1; the two ends of the top interconnecting steel bar 3 are respectively welded to the top of the side steel bar 101 of the adjacent beams 1.

[0025] The space between the beams 1 and the top of all the beams 1 are filled with concrete to form the masonry 5 between the beams 1 and the bridge deck structure 6 on top of all the beams 1 and the masonry 5.

[0026] The bridge deck beam connection structure proposed in this embodiment of the utility model is formed by the masonry 5 between beams 1 and the bridge deck structure 6 on top of all beams 1 and masonry 5. The bottom sides of the masonry 5 are firmly connected to the bottom reinforcing bars 102 extending from the bottom sides of the adjacent beams 1. The concrete of the bridge deck structure 6 on top of the masonry 5 is also firmly combined with the top of the side reinforcing bars 101 and the top interconnecting reinforcing bars 3 on the sides of the adjacent beams 1. Therefore, it can strengthen the lateral connection between the beams and improve the load-bearing capacity of the masonry between the beams.

[0027] Specifically, the side reinforcement 101 is a first rectangular reinforcement, and the length direction of the first rectangular reinforcement is set vertically along the side of the beam 1; the top of the side reinforcement 101 is welded to the top interconnecting reinforcement 3 to strengthen the lateral connection between the beams.

[0028] More preferably, each beam 1 is provided with prestressed steel bars 7 at its bottom; the two ends of the prestressed steel bars 7 are fixed to the anchor points at an angle upwards, which can improve the bearing capacity of the bridge.

[0029] Specifically, the intermediate reinforcement group 4 includes a second rectangular reinforcement 401, transverse reinforcement 402, and longitudinal reinforcement 403. The second rectangular reinforcement 401 is arranged longitudinally at intervals in the space between the beams 1. Several transverse reinforcements 402 are arranged between the two vertical sides of each second rectangular reinforcement 401, and the two ends of each transverse reinforcement 402 are tied to the two vertical sides of the second rectangular reinforcement 401. In the space between the beams 1, the longitudinal reinforcement 403 is divided into two columns, extending longitudinally along the space between the beams 1. Several longitudinal reinforcements 403 are distributed vertically at intervals in each column, and the two columns of longitudinal reinforcements 403 are tied to the two vertical sides of the second rectangular reinforcement 401 respectively. The above-mentioned intermediate reinforcement group 4 can improve the bearing capacity of the masonry.

[0030] More preferably, the top interconnecting steel bar 3 is tied to the two vertical sides of the second rectangular steel bar 401; this can improve the connection strength between the masonry 5 and the bridge deck structure 6.

[0031] Specifically, the bottom reinforcing bar 102 includes a first bottom reinforcing bar 1021 and a second bottom reinforcing bar 1022; the first bottom reinforcing bar 1021 extends laterally at the bottom of the beam 1, enters the space between the beams 1 and then extends obliquely upward; the second bottom reinforcing bar 1022 extends obliquely upward at the bottom of the beam 1, enters the space between the beams 1 and then extends laterally; by combining the first bottom reinforcing bar 1021 and the second bottom reinforcing bar 1022, the lateral connection strength between the masonry 5 and its adjacent beams 1 can be strengthened.

[0032] More preferably, in the lower part of the masonry 5, a through hole 501 is provided along the longitudinal direction, and a post-tensioned prestressed steel strand is provided in the through hole 501; the two ends of the post-tensioned prestressed steel strand are fixed to the anchor point at an angle upwards, which can improve the load-bearing capacity of the masonry and the entire bridge.

[0033] More preferably, the sides of the beam 1 that need to be interconnected are also provided with grooves 103, which extend longitudinally; the grooves 103 can strengthen the bond between the concrete of the masonry 5 and the beam 1; when the slab beam is prefabricated, steel bars can be welded on the prefabrication template to form the grooves 103 on the side of the beam 1.

[0034] More preferably, the opposite sides of two adjacent beams 1 are inclined planes, the upper part of which slopes towards the middle of the space between the adjacent beams 1; the post-tensioned prestressed steel strands provide an upward force, and the inclined planes of the two adjacent beams 1 towards the space between the beams 1 provide a pair of downward reaction forces, making the masonry 5 more stable; as Figure 1 As indicated by the middle arrow.

[0035] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A bridge deck beam connection structure, wherein the deck beam comprises a beam body (1) and a hollow hole (2) extending longitudinally within the beam body (1); characterized in that, The beam (1) is provided with embedded steel bars; the embedded steel bars include side steel bars (101) and bottom steel bars (102); the side steel bars (101) are located in the sides of the beam (1) that need to be interconnected, and their upper ends extend out of the side of the beam (1); the bottom steel bars (102) are located at the bottom of the beam and extend out of the side of the beam (1) into the space between the beams (1); the side steel bars (101) and the bottom steel bars (102) are both arranged at intervals along the longitudinal direction of the beam (1); A top interconnecting steel bar (3) is provided between adjacent beams (1), and an intermediate steel bar group (4) is provided in the space between adjacent beams (1); the two ends of the top interconnecting steel bar (3) are respectively welded to the top of the side steel bar (101) of the adjacent beam (1); The space between the beams (1) and the top of all the beams (1) are filled with concrete to form a masonry (5) between the beams (1) and a bridge deck structure (6) on top of all the beams (1) and the masonry (5).

2. The bridge deck beam connection structure as described in claim 1, characterized in that, The side reinforcement (101) is a first rectangular reinforcement, and the length direction of the first rectangular reinforcement is set vertically along the side of the beam (1).

3. The bridge deck beam connection structure as described in claim 1, characterized in that, Each beam (1) has prestressed steel bars (7) at its bottom.

4. The bridge deck beam connection structure as described in claim 1, characterized in that, The intermediate steel reinforcement group (4) includes a second rectangular steel reinforcement (401), transverse steel reinforcement (402), and longitudinal steel reinforcement (403). The second rectangular steel reinforcement (401) is arranged longitudinally at intervals in the space between the beams (1). Several transverse steel reinforcements (402) are arranged between the two vertical sides of each second rectangular steel reinforcement (401), and the two ends of each transverse steel reinforcement (402) are tied to the two vertical sides of the second rectangular steel reinforcement (401). In the space between the beams (1), the longitudinal steel reinforcement (403) is divided into two columns and extends longitudinally along the space between the beams (1). Several longitudinal steel reinforcements (403) are distributed vertically at intervals in each column, and the two columns of longitudinal steel reinforcements (403) are tied to the two vertical sides of the second rectangular steel reinforcement (401) respectively.

5. The bridge deck beam connection structure as described in claim 4, characterized in that, The top interconnecting steel bar (3) is tied to the two vertical sides of the second rectangular steel bar (401).

6. The bridge deck beam connection structure as described in claim 1, characterized in that, The bottom reinforcement (102) includes a first bottom reinforcement (1021) and a second bottom reinforcement (1022); the first bottom reinforcement (1021) extends laterally at the bottom of the beam (1), enters the space between the beams (1) and then extends obliquely upward; the second bottom reinforcement (1022) extends obliquely upward at the bottom of the beam (1), enters the space between the beams (1) and then extends laterally.

7. The bridge deck beam connection structure as described in claim 1, characterized in that, In the lower part of the masonry (5), there are also perforations (501) along the longitudinal direction, and post-tensioned prestressed steel strands are provided in the perforations (501).

8. The bridge deck beam connection structure as described in claim 1, characterized in that, The beam (1) is provided with grooves (103) on the sides that need to be interconnected, and the grooves (103) extend longitudinally.

9. The bridge deck beam connection structure as described in claim 1, characterized in that, The opposite sides of two adjacent beams (1) are inclined planes, and the upper part of the inclined planes slopes towards the middle of the space between the adjacent beams (1).

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