Noise reduction bridge expansion device with support beam

Abstract

The utility model discloses a kind of noise reduction bridge telescopic devices with supporting crossbeam, including device body, the device body is composed of rubber and stiffened steel plate, the rubber is wrapped in the stiffened steel plate surface, vertical rigidity reinforcing structure is provided in the device body bottom;The vertical rigidity reinforcing structure includes the displacement control structure being arranged between two abutments and the support structure being arranged between the device body and the displacement control structure.By the above mode, a kind of noise reduction bridge telescopic devices with supporting crossbeam of the utility model, the telescopic device is equipped with vertical rigidity reinforcing structure, so that device body has sufficient vertical rigidity, can satisfy the demand of large-span bridge telescopic displacement.

Description

Technical Field

[0001] This utility model belongs to the field of bridge construction engineering, and specifically relates to a noise reduction bridge expansion joint with a supporting crossbeam. Background Technology

[0002] Plate-type rubber expansion joints are rigid-flexible devices formed by bonding aging-resistant and wear-resistant rubber with stiffening steel plates. These devices adapt to the expansion and contraction of bridge beams caused by temperature changes through the shear or tensile deformation of the rubber. They are characterized by simple structure, good extensibility, excellent waterproof performance, and durability.

[0003] However, as the bridge span increases, the width of this expansion joint also needs to be increased accordingly. At this time, the steel plate inside the expansion joint often does not have sufficient vertical stiffness, which will cause the expansion joint to bend and deform. Therefore, this type of expansion joint is often only suitable for bridges with small to medium spans. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a noise reduction bridge expansion joint with a supporting crossbeam. This expansion joint gives the device body sufficient vertical stiffness to meet the expansion and contraction displacement requirements of long-span bridges.

[0005] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a noise reduction bridge expansion device with a supporting crossbeam is provided, including a device body, the device body being composed of rubber and stiffening steel plate, the rubber being wrapped around the surface of the stiffening steel plate, and a vertical stiffness enhancement structure being provided at the bottom of the device body; The vertical stiffness enhancement structure includes a displacement control structure disposed between the two bridge abutments and a support structure disposed between the device body and the displacement control structure.

[0006] In a preferred embodiment of the present invention, the displacement control structure includes two displacement control boxes and a supporting crossbeam. The two displacement control boxes are symmetrically arranged on the vertical surfaces of the two opposite bridge abutments, and the two sides of the supporting crossbeam are respectively connected to the two displacement control boxes.

[0007] In a preferred embodiment of the present invention, the support structure includes two support groups and a crossbeam pad, the two support groups are respectively disposed in the two displacement control boxes, and the crossbeam pad is disposed between the support crossbeam and the device body.

[0008] In a preferred embodiment of the present invention, the support assembly comprises a pressure-bearing support and a clamping support. The pressure-bearing support is disposed between the bottom of the support beam located inside the displacement control box and the bottom of the displacement control box, and the clamping support is disposed between the top of the support beam located inside the displacement control box and the top of the displacement control box.

[0009] In a preferred embodiment of the present invention, the device body is installed in the mounting groove on the upper surface of the two bridge decks.

[0010] In a preferred embodiment of this utility model, the device body and the bridge abutment are fixed together by anchor bolts.

[0011] The beneficial effects of this utility model are: This utility model provides a noise reduction bridge expansion device with a supporting crossbeam. The expansion device is equipped with a vertical stiffness enhancement structure, which makes the device body have sufficient vertical stiffness to meet the expansion displacement requirements of large-span bridges. Attached Figure Description

[0012] Figure 1 This is a front view of a noise-reducing bridge expansion joint with a supporting crossbeam.

[0013] Figure 2 This is a top view of a noise-reducing bridge expansion joint with a supporting crossbeam.

[0014] The components in the attached diagram are labeled as follows: 1. Rubber; 2. Stiffening steel plate; 3. Displacement control box; 4. Support beam; 5. Pressure bearing support; 6. Clamping support; 7. Beam pad; 8. Anchor bolt. Detailed Implementation

[0015] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0016] Please see Figure 1 and Figure 2 The present invention includes: a noise-reducing bridge expansion joint with a supporting crossbeam, comprising a device body, the device body being composed of rubber 1 and stiffening steel plate 2, the rubber 1 being wrapped around the surface of the stiffening steel plate 2, the rubber 1 having the advantages of aging resistance and wear resistance, the stiffening steel plate 2 being used to improve the load-bearing capacity of the device body, the rubber 1 and the stiffening steel plate 2 being vulcanized and bonded to form the device body, used to absorb the impact load brought by vehicles passing by, and having the function of vibration reduction and noise reduction.

[0017] The device body has a vertical stiffness enhancement structure at its bottom. The vertical stiffness enhancement structure includes a displacement control structure disposed between the two bridge abutments and a support structure disposed between the device body and the displacement control structure, so that the device body has sufficient vertical stiffness to meet the expansion and contraction displacement requirements of long-span bridges.

[0018] The displacement control structure includes two displacement control boxes 3 and a support beam 4. The two displacement control boxes 3 are symmetrically arranged on the vertical surfaces of the two opposite bridge abutments. The two sides of the support beam 4 are respectively connected to the two displacement control boxes 3. The support beam 4 is used to transmit the vertical and horizontal impact loads of the upper vehicle.

[0019] The support structure includes two support groups and a crossbeam pad 7. The two support groups are respectively installed in the two displacement control boxes 3. The crossbeam pad 7 is installed between the support crossbeam 4 and the device body to transfer the load of the upper vehicle. At the same time, when the device is displaced, it can slide on its upper surface.

[0020] The support assembly consists of a pressure-bearing support 5 and a clamping support 6. The pressure-bearing support 5 is disposed between the bottom of the support beam 4 located inside the displacement control box 3 and the bottom of the displacement control box 3. The clamping support 6 is disposed between the top of the support beam 4 located inside the displacement control box 3 and the top of the displacement control box 3.

[0021] The device body is installed in the mounting groove on the upper surface of the two bridge abutments. The device body is fixed to the bridge abutments by anchor bolts 8. The anchor bolts 8 are high-strength bolts used to position and anchor the device body.

[0022] The device can be manufactured in sections, assembled on-site, and is convenient to transport and construct.

[0023] Compared with the prior art, the present invention provides a noise reduction bridge expansion joint with a supporting crossbeam. The expansion joint is equipped with a vertical stiffness enhancement structure, which gives the main body of the joint sufficient vertical stiffness to meet the expansion displacement requirements of long-span bridges.

[0024] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A noise-reducing bridge expansion joint with a supporting crossbeam, comprising a joint body, the joint body being composed of rubber and a stiffening steel plate, the rubber being wrapped around the surface of the stiffening steel plate, characterized in that, The bottom of the device body is provided with a vertical stiffness enhancement structure; The vertical stiffness enhancement structure includes a displacement control structure disposed between the two bridge abutments and a support structure disposed between the device body and the displacement control structure.

2. The noise-reducing bridge expansion joint with supporting crossbeam according to claim 1, characterized in that, The displacement control structure includes two displacement control boxes and a supporting crossbeam. The two displacement control boxes are symmetrically arranged on the vertical surfaces of the two opposite bridge abutments. The two sides of the supporting crossbeam are respectively connected to the two displacement control boxes.

3. A noise-reducing bridge expansion joint with a supporting crossbeam according to claim 2, characterized in that, The support structure includes two support groups and a crossbeam pad. The two support groups are respectively installed in the two displacement control boxes, and the crossbeam pad is installed between the support crossbeam and the device body.

4. A noise-reducing bridge expansion joint with a supporting crossbeam according to claim 3, characterized in that, The support assembly consists of a pressure-bearing support and a clamping support. The pressure-bearing support is located between the bottom of the support beam inside the displacement control box and the bottom of the displacement control box. The clamping support is located between the top of the support beam inside the displacement control box and the top of the displacement control box.

5. A noise-reducing bridge expansion joint with a supporting crossbeam as described in claim 1, characterized in that, The device body is installed in the mounting groove on the upper surface of the two bridge decks.

6. A noise-reducing bridge expansion joint with a supporting crossbeam according to claim 5, characterized in that, The device body is fixed to the bridge abutment by anchor bolts.

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