CN209555761U - A bridge expansion joint vibration damping mechanism - Google Patents

Abstract

The utility model discloses a bridge expansion joint damping mechanism, including the pull rod, first top sliding sleeve, first thimble spring, the first lantern ring, second top sliding sleeve, second thimble spring and second lantern ring, the pull rod both ends are provided with first top sliding sleeve and second top sliding sleeve respectively, and the pull rod passes first thimble spring in proper order, the first lantern ring, second lantern ring and second thimble spring, the both ends of first thimble spring respectively with first top sliding sleeve and first lantern ring fixed connection, the both ends of second thimble spring respectively with second top sliding sleeve and second lantern ring fixed connection. The utility model discloses a set up loop bar spring and the lantern ring on the pull rod, utilize spring and pull rod to carry out the transfer of horizontal direction and decompose, can cushion the impact stress of horizontal direction, the utility model discloses factor of safety is high, can save a large amount of manpower and materials, reduces engineering cost, reduction of erection time, and simple structure can prolong the life of bridge.

Description

A bridge expansion joint vibration damping mechanism

technical field

The utility model relates to the technical field of bridge construction, in particular to a bridge expansion joint damping mechanism.

Background technique

Bridges generally refer to structures erected on rivers, lakes and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to buildings that cross mountain streams, poor geology or meet other transportation needs to make traffic more convenient. A bridge is generally composed of a superstructure, a substructure, a support and ancillary structures. The superstructure is also called a bridge span structure, which is the main structure for crossing obstacles; the substructure includes abutments, piers and foundations; Or the force transmission device installed at the supporting place of the bridge abutment; the auxiliary structures refer to the bridge head board, conical slope protection, bank protection, diversion works, etc.

With the accelerated development of economic globalization and regional economic integration, bridges tend to be characterized by heavy load, high impact force and high traffic density. When the driving vehicle starts or brakes or decelerates on the bridge, the horizontal starting force or braking force acts directly on the bridge span, and then the bridge span transmits the horizontal force to the bridge pier. Therefore, the stiffness and bearing capacity of bridge piers are crucial to ensure the safety of driving.

Especially in recent years, with the gradual increase of the transportation volume, in order to ensure the safety of the bridge, it is necessary to design the shock absorption of the bridge. The shock absorption device is an important part of the service life of the bridge. The shock absorption device can reduce the main bridge and Collision damage between abutments.

At present, the bridge damping design in the prior art mostly starts from the bridge support. In the horizontal direction, the adjacent beams are fixedly connected by using structural steel, and the deformation and shock absorption in the horizontal direction is carried out relying on the yield strength of the structural steel itself. Therefore The shock absorption effect in the horizontal direction is not very good.

The above defects are worth improving.

Contents of the invention

In order to overcome the deficiencies of the existing technology, the utility model provides a bridge expansion joint vibration damping mechanism.

The technical scheme of the utility model is as follows:

A bridge expansion joint vibration damping mechanism, comprising a first beam body, a second beam body and a bridge pier, the first beam body and the second beam body are respectively erected on the bridge pier, the first beam body and the An expansion joint damping device is arranged between the second beams, and the expansion joint damping device includes a pull rod, a first top end sliding sleeve, a first set of rod springs, a first collar, a second top end sliding sleeve, and a second set of rod springs And the second collar, the two ends of the pull rod are respectively provided with the first top end sliding sleeve and the second top end sliding sleeve, and the pull rod passes through the first set of rod springs, the first set of ring, the second collar and the second rod spring, the two ends of the first rod spring are respectively fixedly connected with the first top end sliding sleeve and the first collar, and the second Both ends of the sleeve rod spring are respectively fixedly connected with the second top end sliding sleeve and the second collar.

Further, the first collar is fixedly connected to the first beam body, the second collar is fixedly connected to the second beam body, and the pull rod is along the first collar and the second beam body. Two sets of rings move left and right.

Further, the first top end sliding sleeve is fixedly connected to the first beam body, the pull rod moves left and right along the first top end sliding sleeve, the first and second top end sliding sleeves are connected to the second The beam body is fixedly connected, and the pull rod moves left and right along the second top end sliding sleeve.

Further, the first top end sliding sleeve and the second top end sliding sleeve, the first rod spring and the second rod spring, the first collar and the second collar are all Left and right symmetrical settings.

According to the utility model of the above-mentioned scheme, its beneficial effect is that the utility model can buffer the impact stress in the horizontal direction by arranging the sleeve rod spring and the collar on the pull rod, and utilizing the spring and the pull rod to perform horizontal transfer and decomposition. The safety factor is high, a large amount of manpower and material resources can be saved, the project cost can be reduced, the construction period can be shortened, the structure is simple, and the service life of the bridge can be extended.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the dustproof cover in the utility model.

Fig. 3 is a schematic diagram of the specific application of the present invention.

In the figure, 1, the first beam body; 11, the base surface of the first beam body. 2. The second beam body; 21. The base surface of the second beam body;

3. Bearing; 4. Sliding rubber bearing; 5. Pier;

6. Expansion joint damping device; 61. Pull rod; 62. The first top sliding sleeve; 63. The first rod spring; 64. The first collar; 65. The second collar; 66. The second rod spring; 67, the second top sliding sleeve.

7. Dust cover; 8. Shear pin.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

As shown in Figure 1-3, a bridge expansion joint vibration damping mechanism includes a first beam body 1, a second beam body 2 and a bridge pier 5, and the bridge pier 5 is provided with a sliding rubber bearing 4 and a shear pin 8. The rubber bearing 4 is connected to the bearing 3; the shear pin 8 is set on the side of the bearing 3, and the lower part of the shear pin 8 is fixedly connected with the pier 5, and the shear pin 8 is used to buffer the lateral stress and the longitudinal stress of the bearing. Stress; the support 5 is respectively erected with a first beam body 1 and a second beam body 2, and an expansion joint damping device 6 is arranged between the first beam body 1 and the second beam body 2, and the expansion joint vibration damping device 6 includes a tie rod 61. The first top sliding sleeve 62, the first rod spring 63, the first collar 64, the second top sliding sleeve 65, the second rod spring 66 and the second collar 67, and the two ends of the pull rod 61 are respectively provided with the first A top end sliding sleeve 61 and a second top end sliding sleeve 67, and the pull rod 61 passes through the first set of rod springs 62, the first collar 63, the second collar 64 and the second set of rod springs 65 successively, the first set of rod springs The two ends of 62 are fixedly connected with the first top sliding sleeve 61 and the first collar 63 respectively, and the two ends of the second rod spring 66 are fixedly connected with the second top sliding sleeve 67 and the second collar 65 respectively.

The first collar 64 is fixedly connected with the first beam body 1, and is arranged on the lower part of the first beam body base surface 11; the second collar body is fixedly connected with the second beam body, and is arranged at the lower part of the second beam body base surface 21. Move left and right with the first loop and the second loop.

The first top sliding sleeve 62 is fixedly connected with the first beam body 1, the pull rod 61 moves left and right along the first top sliding sleeve 62, the second top sliding sleeve 67 is fixedly connected with the second beam body 2, and the pull rod 61 moves along the second The top sliding sleeve 67 moves left and right.

The first top sliding sleeve 62 and the second top sliding sleeve 67 , the first rod spring 63 and the second rod spring 66 , the first collar 64 and the second collar 65 are arranged symmetrically.

Preferably, a dustproof cover 7 is arranged between the first collar 64 and the second collar 65, and the dustproof cover 7 is a stretchable dustproof cover, and the dustproof cover 7 is set on the pull rod for preventing It is dust-proof and waterproof, preventing impurities and oil from entering the collar, and at the same time strengthens the protection of the pull rod 61 to prevent the pull rod 61 from corroding and rusting.

Preferably, a spring cover is provided around the first set rod spring 63 and the second cover rod spring 66, the spring cover includes the first spring cover and the second spring cover, and the first spring cover is connected with the first top end sliding sleeve 62 and the first top end sliding sleeve 62 and the second spring cover respectively. The first collar 64 is connected to cover and protect the first set rod spring 63 and the pull rod 61 in the first set rod spring to prevent dust and dirt; the second spring cover is connected with the second top end sliding sleeve 67 and the second collar 65 respectively. To connect, cover and protect the second set of rod springs 66 and the pull rod 61 in the second set of rod springs.

Preferably, both the first top end sliding sleeve 62 and the second top end sliding sleeve 67 are hydraulic dampers, that is, the two ends of the pull rod are respectively provided with hydraulic dampers for shock absorption.

The utility model arranges the sleeve rod spring and the sleeve ring on the pull rod, uses the spring and the pull rod to carry out horizontal transfer and decomposition, and can buffer the impact stress in the horizontal direction. The utility model has a high safety factor, can save a lot of manpower and material resources, and reduce the construction cost , shorten the construction period, have a simple structure, and can prolong the service life of the bridge.

It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present utility model.

The utility model patent has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the implementation of the utility model patent is not limited by the above-mentioned methods, as long as various improvements made by the method concept and technical solutions of the utility model patent are adopted, or Directly applying the ideas and technical solutions of the utility model patent to other occasions without improvement is within the protection scope of the utility model.

Claims (4)

1. A bridge expansion joint damping mechanism, comprising a first beam body, a second beam body and a bridge pier, the first beam body and the second beam body are erected on the bridge pier respectively, it is characterized in that the first beam body and the second beam body are respectively erected on the bridge pier An expansion joint damping device is arranged between the first beam body and the second beam body, and the expansion joint damping device includes a pull rod, a first top end sliding sleeve, a first set of rod springs, a first collar, and a second top end sliding sleeve , a second set of rod springs and a second collar, the two ends of the pull rod are respectively provided with the first top end sliding sleeve and the second top end sliding sleeve, and the pull rod passes through the first set of rod springs in sequence , the first sleeve ring, the second sleeve ring and the second sleeve rod spring, the two ends of the first sleeve rod spring are respectively fixed with the first top end sliding sleeve and the first sleeve ring connected, the two ends of the second rod spring are respectively fixedly connected with the second top end sliding sleeve and the second collar. 2. The bridge expansion joint vibration damping mechanism according to claim 1, wherein the first collar is fixedly connected to the first beam body, and the second collar is fixed to the second beam body connected, the pull rod moves left and right along the first collar and the second collar. 3. The bridge expansion joint vibration damping mechanism according to claim 1, characterized in that, the first top end sliding sleeve is fixedly connected to the first beam body, and the pull rod moves along the first top end sliding sleeve. Moving left and right, the second top end sliding sleeve is fixedly connected with the second beam body, and the pull rod moves left and right along the second top end sliding sleeve. 4. The bridge expansion joint vibration damping mechanism according to claim 1, characterized in that, the first top end sliding sleeve and the second top end sliding sleeve, the first set of rod springs and the second set of rods The spring, the first collar and the second collar are arranged symmetrically.