CN201241310Y - Shock-proof shock-absorbing support - Google Patents

Abstract

The utility model discloses an antidetonation damping bearing, it has had to be connected the difficult disconnection of support when the earthquake takes place between bridge and the pier to solve, causes the problem of bridge damage. The upper support plate (1) is connected with a bridge body, the lower support plate (5) is connected with a bridge pier, the upper support plate and the lower support plate are fixedly connected or movably connected, the lower support plate (5) is in threaded connection with the sleeve (6) through the anti-seismic bolt (7), the sleeve (6) is fixedly connected with the bridge pier, and the outer thread surface of the anti-seismic bolt (7) is provided with a transverse or/and longitudinal groove.

Description

Anti-vibration shock absorber

Technical field:

The utility model relates to the connecting support between a bridge body and a bridge pier.

Background technique:

The current basin-type rubber bearings, spherical bearings and other special structural bearings generally use anchor bolts and sleeves to connect the bearings to the beam body and pier (platform), and the anchor bolts bear normal use and earthquake horizontal force. When a rare earthquake occurs, the horizontal force acting on the support exceeds the design horizontal force limit, and the bolts are sheared. If the support bolts are not sheared, the beam or pier (platform) will be damaged. The mount cannot be repaired or replaced if it is removed from the sleeve.

Utility model content:

The purpose of the utility model is to provide an anti-seismic and shock-absorbing support with simple structure, which can protect the bridge body or pier from being damaged in a large earthquake, and is easy to repair and replace.

The utility model is achieved in that:

In the utility model's anti-seismic and shock-absorbing support, the upper support plate 1 is connected with the bridge body, the lower support plate 5 is connected with the pier, the upper and lower support plates are fixedly connected or movably connected, and the lower support plate 5 is connected to the bridge body through the anti-seismic bolt 7. The sleeve 6 is threaded, and the sleeve 6 is fixedly connected with the pier, and the outer threaded surface of the anti-seismic bolt 7 has transverse or/and longitudinal grooves.

The anti-seismic bolt 7 has a transverse groove 8 at the joint between the lower support plate 5 and the sleeve 6, and the transverse groove 8 is an annular groove around the outer diameter of the anti-seismic bolt 7.

The outer surface of the anti-seismic bolt 7 located in the sleeve 6 has an even number of symmetrical longitudinal grooves 11 in pairs.

The external thread of the anti-seismic bolt 7 is connected with the internal thread of the transition sleeve 9 , the external thread of the transition sleeve 9 is connected with the internal thread of the sleeve 6 , and the upper end surface of the transition sleeve 9 has a hole 10 .

The upper and lower support plates are fixedly connected with the middle steel plate 4 .

The lower bearing plate 5 is fixedly connected with the middle steel plate 4, and the middle steel plate 4 is positioned at the groove of the upper bearing plate 1 to cooperate with it.

The working principle of the anti-seismic and shock-absorbing support of the utility model is: because the anti-seismic bolt periphery of the lower support plate connecting the support has notches, its strength is lower than the bolts used for the upper support plate. When the actual horizontal force of the support is greater than the design horizontal force, the anti-seismic bolts connecting the lower support plate are cut off first, and the support and the beam body are displaced in the horizontal direction to achieve the function of shock absorption and energy dissipation. When it is necessary to reset the original support or replace the support, use a jack to lift the beam body and the support together from the pier (platform) to a certain height, leaving room for the operation of the anti-seismic bolts, and use special tools to shear the cracks with the anti-seismic bolts The vertical notch on the surface will unscrew the broken thread part in the sleeve, reset the support or reinstall a new support, and replace it with a new anti-seismic bolt. For the structure with a transition sleeve, after the top of the support is a certain height away from the pier (platform), use a special tool to use the small hole on the top surface of the transition sleeve to screw the transition sleeve and the threaded part broken in the transition sleeve together. Out, replace with a new transition sleeve, install the support, and connect the anti-seismic bolts.

The utility model has the advantages of the anti-seismic and shock-absorbing support in that: when the actual horizontal force of the support is greater than the designed horizontal force, the anti-seismic bolt can be oriented to break between the lower support plate and the pier (platform), and the broken part can be easily The thread part is taken out, which greatly reduces the replacement time of the support and reduces the replacement cost of the support.

Description of drawings:

Fig. 1 is one of the structural diagrams of the utility model.

Fig. 2 is the second structure diagram of the utility model.

Fig. 3 is one of the structural diagrams of the anti-seismic bolt of the present invention.

Fig. 4 is a cross-sectional view along line A-A of Fig. 3 .

Fig. 5 is the second structural diagram of the anti-seismic bolt of the present invention.

Fig. 6 is a cross-sectional view along line A-A of Fig. 5 .

Detailed ways:

Example 1:

The utility model anti-shock damping support comprises an upper support plate 1, a stainless steel plate 2, a slide plate 3, an intermediate steel plate 4, a lower support plate 5, and a sleeve 6 located below the lower support plate, which is arranged on the lower support plate 5 and the lower support plate. Anti-seismic bolts 7 between sleeves 6. The anti-seismic bolt 7 is sewn with an annular transverse groove 8 at the connection between the lower bearing plate and the sleeve, and four symmetrical longitudinal grooves 11 are opened under the transverse groove 8 .

Example 2:

The utility model's anti-shock shock absorbing support includes an upper support plate 1, a middle steel plate 4, a lower support plate 5, a sleeve 6 located below the lower support plate, and an anti-seismic structure arranged between the lower support plate 5 and the sleeve 6. Bolt 7. The structure of the anti-seismic bolt 7 is the same as that of Embodiment 1. The external thread of the shockproof bolt is connected with the internal thread of the transition sleeve 9 , and the external thread of the transition sleeve 9 is connected with the internal thread of the sleeve 6 . The top surface of the transition sleeve 9 has a plurality of small holes 10 .

Claims (6)

1. Anti-seismic and shock-absorbing bearings, the upper bearing plate (1) is connected with the bridge body, the lower bearing plate (5) is connected with the bridge pier, and the upper and lower bearing plates are fixedly connected or flexibly connected, which is characterized in that the lower bearing plate (5) The sleeve (6) is threadedly connected by the anti-seismic bolt (7), and the sleeve (6) is fixedly connected with the bridge pier. The external thread surface of the anti-seismic bolt (7) has transverse or/and longitudinal grooves. 2. The anti-vibration and vibration-absorbing support according to claim 1, characterized in that the anti-vibration bolt (7) has a transverse groove (8) at the joint between the lower support plate (5) and the sleeve (6), and the transverse groove (8) It is an annular groove around the outer diameter of the anti-seismic bolt (7). 3. The anti-vibration and vibration-absorbing support according to claim 1 or 2, characterized in that the outer surface of the anti-vibration bolt (7) located inside the sleeve (6) has an even number of symmetrical longitudinal grooves (11). 4. The anti-vibration and vibration-absorbing support according to claim 3, characterized in that the external thread of the anti-seismic bolt (7) is connected with the internal thread of the transition sleeve (9), and the external thread of the transition sleeve (9) is connected with the sleeve The internal thread of (6) is connected, and the upper end face of transition sleeve (9) has hole (10). 5. The anti-vibration and vibration-absorbing support according to claim 1, characterized in that the upper and lower support plates are fixedly connected with the middle steel plate (4). 6. The anti-vibration and vibration-absorbing support according to claim 1, characterized in that the lower support plate (5) is fixedly connected with the middle steel plate (4), and the middle steel plate (4) is located in the groove of the upper support plate (1) In dynamic cooperation with it, the surface of the middle steel plate (4) located in the groove is connected with the slide plate (3), and the horizontal plane of the groove is connected with the stainless steel plate (2).

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