Bridge expansion joint device

Abstract

A bridge expansion joint device, wherein the outer end of a first comb plate is connected to an upper support member, and the lower support member includes a torsion upper corner plate, a torsion lower corner plate and a torsion shaft, wherein the torsion lower corner plate is fixed to the end of a first beam, and the upper support member is supported on the torsion upper corner plate, and the torsion shaft is arranged along the longitudinal direction of the bridge, and the torsion lower corner plate and the torsion upper corner plate are both mounted on the torsion shaft, and the torsion upper corner plate and the torsion lower corner plate can rotate relative to each other through the torsion shaft. The torsion upper corner plate and the torsion lower corner plate of the bridge expansion joint device can rotate relative to each other through the torsion shaft, so that the expansion joint device has the function of torsion rotation along the bridge direction, and in addition, the bridge expansion joint device also has the multi-directional displacement functions of lateral displacement, longitudinal displacement, longitudinal rotation angle and horizontal rotation angle. A bridge using the expansion joint device can improve the safety of the bridge when dealing with the influence of environment, temperature, heavy load, strong wind, ocean current, tide and earthquake.

Description

Technical Field

[0001] The invention relates to the technical field of bridge expansion joints, and in particular to a bridge expansion joint device. Background Art

[0002] In order to meet the needs of bridge beam deformation, bridge expansion joint devices are generally installed between the two ends of the bridge beam, between the beam end and the abutment, or at the hinged position of the bridge. Currently, the most advanced bridge expansion joint device has four-way displacement functions of lateral displacement, longitudinal displacement, longitudinal rotation, and horizontal rotation, which can meet the requirements of most bridges for bridge expansion joint devices. However, some large bridges are affected by the environment, temperature, heavy load, strong wind, ocean current, tide, and earthquake during use. In addition to lateral displacement, longitudinal displacement, longitudinal rotation, and horizontal rotation, they will also torsion along the bridge direction. Accordingly, in order to avoid damage to the expansion joint device and the beam body, the bridge expansion joint device is also required to have the function of torsion along the bridge direction. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a bridge expansion joint device with a torsion function along the bridge direction in view of the above-mentioned existing technical status.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the bridge expansion joint device comprises a first comb plate and a second comb plate that cooperate with each other, the outer end of the first comb plate is installed on a support seat located at the end of the first beam, and the second comb plate is installed on the end of the second beam, characterized in that: the support seat comprises an upper support member and a lower support member, the outer end of the first comb plate is connected to the upper support member, the lower support member comprises a torsion upper corner plate, a torsion lower corner plate and a torsion shaft, the torsion lower corner plate is fixed to the end of the first beam, the upper support member is supported on the torsion upper corner plate, the torsion shaft is arranged along the longitudinal direction of the bridge, the torsion lower corner plate and the torsion upper corner plate are both installed on the torsion shaft, and the torsion upper corner plate and the torsion lower corner plate can rotate relative to each other through the torsion shaft.

[0005] The torsion axis can have a variety of structures. Preferably, the torsion axis is a first connecting bolt, which passes through the torsion upper corner plate and the torsion lower corner plate and movably connects the torsion upper corner plate and the torsion lower corner plate to each other. When the expansion joint is torsioned, the torsion upper corner plate rotates relative to the torsion lower corner plate around the first connecting bolt.

[0006] In order to connect and fix the torsion lower corner plate to the beam body, a rib plate is also fixed to the end of the first beam, and the torsion lower corner plate is fixed on the top of the rib plate.

[0007] The upper support member can have a variety of structures. Preferably, the upper support member includes a support plate, a longitudinal rotation axis and a lower support base plate. The support plate is fixed to the top of the lower support base plate by a second connecting bolt. The longitudinal rotation axis is arranged along the bridge transverse direction and fixed between the support base plate and the lower support base plate. The outer end of the first comb plate is fixed to the longitudinal rotation axis. In this way, when the bridge generates a longitudinal rotation angle due to heavy load, since the span plate and the longitudinal rotation axis are rigidly connected, the span plate generates a longitudinal rotation through the longitudinal rotation axis with the support plate and the center hole of the lower support base plate as the axis, so that the bridge expansion joint device has a longitudinal rotation function.

[0008] Further preferably, a first transverse sliding member distributed along the transverse direction of the bridge is fixed to the bottom of the bottom plate of the lower support seat, and a second transverse sliding member distributed along the transverse direction of the bridge and slidingly matched with the first transverse sliding member is installed on the torsion upper corner plate. In this way, when the bridge is affected by heavy load, strong wind, ocean current, tide, earthquake, and horizontal movement occurs along the pier, the bridge expansion joint device generates relative sliding through the first transverse sliding member and the second transverse sliding member, so that the bridge expansion joint device has a transverse displacement function.

[0009] The first transverse sliding member may have a variety of structures. Preferably, the first transverse sliding member is a first dovetail groove block, and the first dovetail groove block is connected and fixed to the bottom plate of the lower support seat through a third connecting bolt.

[0010] The second transverse sliding member can have a variety of structures. Preferably, the second transverse sliding member includes a second dovetail slot block, a connecting block, a fourth connecting bolt and a horizontal rotation axis. The second dovetail slot block is arranged on both sides of the first dovetail slot block and can slide horizontally relative to the first dovetail slot block. The connecting block is arranged between the second dovetail slot block and the torsion upper corner plate and is connected and fixed with the second dovetail slot block through the fourth connecting bolt. In addition, the connecting block is connected to the torsion upper corner plate through the horizontal rotation axis. In this way, when the bridge is affected by heavy load, strong wind, ocean current, tide, earthquake, and horizontal rotation occurs along the pier, the bridge expansion joint device can rotate horizontally relative to the bridge fixed plate with the horizontal rotation axis as the axis, so that the bridge expansion joint device has a horizontal rotation function.

[0011] Further preferably, a connecting portion extends inwardly from the second dovetail groove block located inside the first dovetail groove block, and the first comb plate is connected to the connecting portion via a fifth connecting bolt.

[0012] In order to provide buffering for the expansion joint device, a buffer sheet is installed between the outer side of the upper supporting member and the end of the first beam.

[0013] As a preferred embodiment of any of the above schemes, the first comb plate is a span plate, and the second comb plate is a fixed comb plate. Thus, when the bridge undergoes longitudinal displacement along the driving direction of the bridge due to ambient temperature and external force, the relative movement of the span plate and the fixed comb plate enables the bridge expansion joint device to have a longitudinal displacement function.

[0014] Compared with the prior art, the advantages of the present invention are that the lower supporting member of the bridge expansion joint device includes a torsion upper corner plate, a torsion lower corner plate and a torsion axis, wherein the torsion lower corner plate is fixed at the end of the first beam, the upper supporting member is supported on the torsion upper corner plate, and the torsion upper corner plate and the torsion lower corner plate can rotate relative to each other through the torsion axis, so that the expansion joint device has the function of torsion rotation along the bridge direction. In addition, the bridge expansion joint device can also have multi-directional displacement functions of lateral displacement, longitudinal displacement, longitudinal rotation and horizontal rotation. A bridge using the expansion joint device will be able to improve the safety of the bridge when dealing with the influence of environment, temperature, heavy load, strong wind, ocean current, tide and earthquake. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural cross-sectional view of an embodiment of the present invention;

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of part A. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the accompanying drawings.

[0018] like Figure 1 and Figure 2 As shown, the bridge expansion joint device of this embodiment includes a first comb plate 1 and a second comb plate 2 that cooperate with each other, the first comb plate 1 is a cross-slot plate, and the second comb plate 2 is a fixed comb plate. The outer end of the first comb plate 1 is mounted on a support seat located at the first beam end 101, and the second comb plate 2 is mounted on the second beam end 102, and an expansion joint is formed between the first beam end 101 and the second beam end 102. When the bridge undergoes longitudinal displacement along the driving direction of the bridge due to ambient temperature and external force, the bridge expansion joint device has a longitudinal displacement function through the relative movement of the cross-slot plate and the fixed comb plate.

[0019] The support seat of the first beam end 101 includes an upper support member 3 and a lower support member 4, and a buffer sheet 9 is installed between the outer side of the upper support member 3 and the first beam end 101. The upper support member 3 of this embodiment includes a support plate 31, a longitudinal rotation axis 32 and a lower support base plate 33, the support plate 31 is fixed to the top of the lower support base plate 33 by a second connecting bolt 34, the longitudinal rotation axis 32 is arranged along the horizontal direction of the bridge and is located between the support base plate 31 and the lower support base plate 33, and the outer end of the first comb plate 1 is fixed to the longitudinal rotation axis 32. When the bridge generates a longitudinal rotation angle due to heavy load, since the first comb plate 1, i.e., the span plate, is rigidly connected to the longitudinal rotation axis 32, the first comb plate 1 generates a longitudinal rotation through the longitudinal rotation axis 32 with the support plate 31 and the center hole of the lower support base plate 33 as the axis, so that the bridge expansion joint device has a longitudinal rotation function.

[0020] The lower support member 4 of this embodiment includes a torsion upper corner plate 41, a torsion lower corner plate 42 and a torsion shaft 43, wherein the torsion lower corner plate 42 is fixed to the first beam end 101, the torsion shaft 43 is arranged along the longitudinal direction of the bridge, the torsion lower corner plate 42 and the torsion upper corner plate 41 are both mounted on the torsion shaft 43, and the torsion upper corner plate 41 and the torsion lower corner plate 42 can rotate relative to each other through the torsion shaft 43. In addition, a rib plate 5 is fixed to the first beam end 101, the torsion lower corner plate 42 is fixed to the top of the rib plate 5, and the upper support member 3 is supported on the torsion upper corner plate 41, thereby, when the bridge is subjected to heavy load, strong wind, ocean current, tide, earthquake, and torsion rotation along the bridge direction, the first comb plate 1, i.e., the span plate, through the torsion upper corner plate 41, the torsion lower corner plate 42 and the torsion shaft 43, enables the bridge expansion joint device to have the function of torsion rotation along the bridge direction.

[0021] The torsion shaft 43 can adopt various connecting shafts. In this embodiment, the torsion shaft 43 is a first connecting bolt, which passes through the torsion upper corner plate 41 and the torsion lower corner plate 42 and movably connects the torsion upper corner plate 41 and the torsion lower corner plate 42 to each other, so that the torsion upper corner plate 41 and the torsion lower corner plate 42 can rotate relative to each other through the first connecting bolt.

[0022] A first transverse sliding member distributed along the transverse direction of the bridge is fixed to the bottom of the lower support seat bottom plate 33, and a second transverse sliding member distributed along the transverse direction of the bridge and slidingly matched with the first transverse sliding member is installed on the torsion upper corner plate 41. The first transverse sliding member of this embodiment is a first dovetail groove block 61, and the first dovetail groove block 61 is connected and fixed to the lower support seat bottom plate 33 through a third connecting bolt 62. The second transverse sliding member of this embodiment includes a second dovetail groove block 71, a connecting block 72, a fourth connecting bolt 73 and a horizontal corner shaft 74, wherein the second dovetail groove block 71 is arranged on both sides of the first dovetail groove block 61 and can slide transversely relative to the first dovetail groove block 61, and the connecting block 72 is arranged between the second dovetail groove block 71 and the torsion upper corner plate 41 and is connected and fixed to the second dovetail groove block 71 through a fourth connecting bolt 73. Thus, through the sliding cooperation between the first dovetail groove block 61 and the second dovetail groove block 71, the expansion joint device has a transverse displacement function.

[0023] In this embodiment, the connecting block 72 is connected to the torsion upper corner plate 41 through a horizontal corner shaft 74. When the bridge is affected by heavy loads, strong winds, ocean currents, tides, and earthquakes, and produces horizontal rotation along the pier, the bridge expansion joint device can produce horizontal rotation relative to the bridge fixed plate with the horizontal corner shaft 74 as the axis, so that the bridge expansion joint device has a horizontal rotation function.

[0024] In addition, the second dovetail groove block 71 located inside the first dovetail groove block 61 extends inwardly with a connecting portion 711, and the first comb plate 1 is connected to the connecting portion 711 through the fifth connecting bolt 8. The connection structure of the fifth connecting bolt 8 can refer to the existing expansion joint device and will not be described in detail here.

Claims

1. A bridge expansion joint device, comprising a first comb plate (1) and a second comb plate (2) that cooperate with each other, wherein the outer end of the first comb plate (1) is mounted on a support seat located at a first beam end (101), and the second comb plate (2) is mounted on a second beam end (102), characterized in that: The support seat comprises an upper support member (3) and a lower support member (4); the outer end of the first comb plate (1) is connected to the upper support member (3); the lower support member (4) comprises a torsion upper corner plate (41), a torsion lower corner plate (42) and a torsion shaft (43); the torsion lower corner plate (42) is fixed to the first beam end (101); the upper support member (3) is supported on the torsion upper corner plate (41); the torsion shaft (43) is arranged along the longitudinal direction of the bridge; the torsion lower corner plate (42) and the torsion upper corner plate (41) are both mounted on the torsion shaft (43); and the torsion upper corner plate (41) and the torsion lower corner plate (42) can rotate relative to each other through the torsion shaft (43).

2. The bridge expansion joint device according to claim 1, characterized in that: The torsion shaft (43) is a first connecting bolt, and the first connecting bolt passes through the torsion upper corner plate (41) and the torsion lower corner plate (42) and movably connects the torsion upper corner plate (41) and the torsion lower corner plate (42) to each other.

3. The bridge expansion joint device according to claim 1, characterized in that: A rib plate (5) is also fixed at the first beam end (101), and the twisted lower corner plate (42) is fixed on the top of the rib plate (5).

4. The bridge expansion joint device according to claim 1, characterized in that: The upper supporting member (3) comprises a support pressure plate (31), a longitudinal rotation angle shaft (32) and a lower support base plate (33); the support pressure plate (31) is fixed to the top of the lower support base plate (33) by a second connecting bolt (34); the longitudinal rotation angle shaft (32) is arranged along the horizontal direction of the bridge and fixed between the support base plate (31) and the lower support base plate (33); the outer end of the first comb plate (1) is fixed to the longitudinal rotation angle shaft (32).

5. The bridge expansion joint device according to claim 4, characterized in that: A first transverse sliding member distributed transversely along the bridge is fixed to the bottom of the lower support base plate (33), and a second transverse sliding member distributed transversely along the bridge and slidably matched with the first transverse sliding member is installed on the torsion upper corner plate (41).

6. The bridge expansion joint device according to claim 5, characterized in that: The first transverse sliding member is a first dovetail slot block (61), and the first dovetail slot block (61) is connected and fixed to the lower support seat bottom plate (33) via a third connecting bolt (62).

7. The bridge expansion joint device according to claim 6, characterized in that: The second transverse sliding member comprises a second dovetail groove block (71), a connecting block (72), a fourth connecting bolt (73) and a horizontal rotation angle shaft (74); the second dovetail groove block (71) is arranged on both sides of the first dovetail groove block (61) and can slide transversely relative to the first dovetail groove block (61); the connecting block (72) is arranged between the second dovetail groove block (71) and the torsion upper corner plate (41) and is connected and fixed to the second dovetail groove block (71) via the fourth connecting bolt (73); and the connecting block (72) is connected to the torsion upper corner plate (41) via the horizontal rotation angle shaft (74).

8. The bridge expansion joint device according to claim 7, characterized in that: The second dovetail groove block (71) located inside the first dovetail groove block (61) has a connecting portion (711) extending inwardly, and the first comb plate (1) is connected to the connecting portion (711) via a fifth connecting bolt (8).

9. The bridge expansion joint device according to claim 1, characterized in that: A buffer sheet (9) is installed between the outer side of the upper support member (3) and the first beam end (101).

10. The bridge expansion joint device according to any one of claims 1 to 9, characterized in that: The first comb plate (1) is a cross-seam plate, and the second comb plate (2) is a fixed comb plate.

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