CN212375704U

CN212375704U - Self-resetting buffering energy-consumption type bridge damping support

Info

Publication number: CN212375704U
Application number: CN202020621311.0U
Authority: CN
Inventors: 田钦; 李顺治; 樊霖涛; 伍群涛
Original assignee: Nanchang University
Current assignee: Nanchang University
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-01-19
Anticipated expiration: 2030-04-23

Abstract

The utility model discloses a self-resetting buffering energy-consuming type bridge damping support, which comprises a lower support plate, a side fixing device, a rubber base plate, a support column, a buffering and damping device and an upper support member, wherein the upper support member is fixedly connected with a bridge above the upper support member, and the lower support plate is fixedly connected with a pier below the lower support member; the bottom of the side fixing device is fixed on the lower support plate, and the bottom of the rubber base plate is fixed on the lower support plate; the supporting column is placed on the rubber base plate, and a plurality of buffering and damping devices connected with the supporting column and the rubber base plate are arranged between the outer wall of the supporting column and the inner wall of the side fixing device. The utility model discloses can restrict the too big displacement of each side between the roof beam body and the pier, through the energy that the friction between buffer damping device's deformation, rubber backing plate and the support column was used for consuming earthquake input, reduce the damage degree of bridge to after the earthquake along with buffer damping device's restoration effect, the support can reset to original form and continue work.

Description

Self-resetting buffering energy-consumption type bridge damping support

Technical Field

The utility model belongs to the technical design field of bridge damping bearing, concretely relates to from energy-consuming type bridge damping bearing of reset buffering.

Background

Since the innovation of China, the rapid development of bridge construction engineering has become an important component in a transportation system. However, China is in two earthquake zones in the world, including the Pacific earthquake zone and the Himalayan-Mediterranean earthquake zone, and some areas of China are between the two earthquake zones and are influenced by the earthquake zones, so that the earthquake in China has high intensity, high frequency and wide range, and has great influence on the construction of roads and bridges. In some earthquake frequent areas, a bridge serving as a transportation hub is a life line, and if the bridge is damaged or collapsed in an earthquake, huge economic loss is caused, and more importantly, the rescue speed is seriously influenced. In order to avoid the occurrence of the event that the bridge is easy to collapse in the earthquake, people need to improve the shock absorption and shock resistance of the bridge from various aspects, and the energy input by the earthquake can be consumed when the earthquake comes. The traditional rubber shock-absorbing and shock-resistant support has limited shear resistance and is easy to damage and age.

Based on the above, a novel bridge damping support is provided, namely a self-resetting buffering energy-consumption type bridge damping support, which can limit the excessive displacement of the bridge in each direction when an earthquake occurs, and can consume the input energy of the earthquake to the bridge pier as much as possible without affecting the main bridge body part at the upper part.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a from energy-consuming type bridge damping bearing of buffering that restores to throne can restrict each other too big displacement between the roof beam body and the pier, through the energy that the friction between buffer damping device's deformation, rubber backing plate and the support column was used for consuming earthquake input, reduces the damage degree of bridge to after the earthquake along with buffer damping device's restoration effect reinforcing, the support can reset to original form and continue work.

In order to achieve the purpose, the utility model discloses a self-resetting buffer energy-consumption type bridge damping support, which comprises a lower support plate, a side fixing device, a rubber base plate, a support column, a buffer damping device and an upper supporting member, wherein the upper supporting member is fixedly connected with a bridge above the upper supporting member through an upper anchor bolt, and the lower support plate is fixedly connected with a pier below the lower supporting member through a lower anchor bolt; the side fixing device is of a square frame structure, the bottom of the side fixing device is fixed on the lower support plate, the rubber base plate is arranged on the inner side of the side fixing device, and the bottom of the rubber base plate is fixed on the lower support plate; the supporting column is placed on the rubber base plate, and a plurality of buffering and damping devices connected with the supporting column and the rubber base plate are arranged between the outer wall of the supporting column and the inner wall of the side fixing device.

The top of the side fixing device is provided with a limiting frame integrally formed with the side fixing device, and the limiting frame is provided with an opening through which the top of the upper supporting member passes.

The cross section of the upper supporting component is in a convex shape, a gap is arranged between the outer wall of the upper part of the upper supporting component and the opening of the limiting frame, and a sealing ring is arranged between the gaps.

A middle steel plate is arranged between the upper supporting member and the supporting column, and the top of the middle steel plate is fixedly connected with the bottom of the upper supporting member; the top of the support column is in contact with the bottom of the middle steel plate.

The buffering and damping device comprises two groups of supporting rods, two groups of damping rods, a sleeve and a built-in damping spring. One end of one group of supporting rods is fixedly connected with the side fixing device, and the other end of the group of supporting rods is connected with the damping rods in a welding mode; one end of the other group of supporting rods is fixedly connected with the supporting columns, and the other end of the supporting rods is connected with the damping rods in a welding mode; an internal damping spring is arranged between the two groups of damping rods and is in a loose state; the two groups of shock absorption rods are fixedly connected through a sleeve.

An external damping spring is arranged between the two groups of supporting rods of the damping device and is in a loose state.

And a rubber stop block is arranged below the inner wall of the side fixing device.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the utility model discloses a dual spring design of built-in damping spring and outside outer damping spring who sets up in buffering damping device can effectively cushion and consume the earthquake energy of input when arriving, and each too big displacement of restriction bridge main part and pier just makes the support have reset function.

2) The utility model can buffer and consume a small part of vertical energy input by earthquake by arranging a rubber cushion plate between the lower support plate and the support column; meanwhile, when an earthquake occurs, the transverse friction between the supporting columns and the rubber base plates can consume a part of energy input by the earthquake.

3) The utility model discloses a side fixing device all is provided with the rubber dog on the inner wall all around, can prevent that the support column from colliding with side fixing device when taking place great displacement and damaging, and the rubber dog also can play the effect of buffering simultaneously.

4) The utility model discloses a set up the sealing washer between upper support component and side fixing device, can prevent effectively that dust and rainwater from getting into and the ageing and the damage of the inside rubber materials of support with higher speed.

5) The utility model discloses simple structure, the durability is good, and the preparation is simple and convenient, and the shock attenuation is respond well.

Drawings

FIG. 1 is a schematic view of the overall structure of the transverse bridge of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention along the direction of the bridge;

fig. 3 is a schematic view of the overall three-dimensional structure of the present invention;

fig. 4 is an exploded view of the present invention;

fig. 5 is the structural schematic diagram of the buffering damping device of the present invention.

In the figure: 1 upper portion crab-bolt, 2 upper portion supporting component, 3 sealing washers, 4 middle steel sheets, 5 side fixing device, 6 buffering damping device, 7 rubber dog, 8 external damping spring, 9 support columns, 10 rubber backing plates, 11 bottom suspension bedplate, 12 lower part crab-bolt, 13 bracing pieces, 14 shock-absorbing rods, 15 sleeves, 16 internal damping spring, 17 upper portion anchor bolt holes.

Detailed Description

In order to make the objects, technical means and functions of the present invention easier to understand, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1 to 5, a self-resetting energy-dissipation type damping support for a bridge comprises a lower support plate 11, a side fixing device 5, a rubber pad plate 10, a supporting column 9, a damping device 6 and an upper support member 2, wherein the upper support member 2 is fixedly connected with a bridge above the upper support member through an upper anchor bolt 1, and the lower support plate 11 is fixedly connected with a pier below the lower support member through a lower anchor bolt 12;

the side fixing device 5 is of a square frame structure, the bottom of the side fixing device is fixed on the lower support plate 11, the rubber cushion plate 10 is arranged on the inner side of the side fixing device 5, and the bottom of the side fixing device is fixed on the lower support plate 11;

the supporting column 9 is placed on the rubber base plate 10, a plurality of buffering and damping devices 6 connected with the outer wall of the supporting column and the inner wall of the side fixing device 5 are arranged between the outer wall of the supporting column and the inner wall of the side fixing device, and the rubber base plate 10 can buffer and consume a small part of vertical energy input by an earthquake; and the area of the upper surface of the rubber pad 10 is larger than that of the lower surface of the supporting column 9, so that more friction distance is generated to consume the energy of the seismic input when the supporting column 9 is displaced.

Specifically, the top of the side fixing device 5 is provided with a limit frame integrally formed with the side fixing device, and the limit frame is provided with an opening for the top of the upper supporting member 2 to pass through; the cross section of the upper supporting member 2 is in a convex shape, a gap is formed between the outer wall of the upper portion of the upper supporting member and the opening of the limiting frame, and the sealing ring 3 is arranged between the gaps, so that the lateral fixing devices 5 on two sides can effectively limit the horizontal displacement of the upper supporting member 2, a circle of complete sealing ring 3 is arranged in the gap, and dust and rainwater can be effectively prevented from entering the inside of the support to accelerate the aging and damage of rubber materials in the support.

An intermediate steel plate 4 is arranged between the upper supporting member 2 and the supporting column 9, and the top of the intermediate steel plate 4 is fixedly connected with the bottom of the upper supporting member 2; the top of the supporting column 9 is in contact with the bottom of the middle steel plate 4, is flat up and down, has no convex part, and is mainly used for transmitting the force between the upper supporting member 2 and the supporting column 9 so that the supporting column can be stressed uniformly.

The buffer damping device 6 comprises two groups of supporting rods 13, two groups of damping rods 14, a sleeve 15 and a built-in damping spring 16; one end of one group of supporting rods 13 is fixedly connected with the side fixing device 5, and the other end of the supporting rods is connected with the damping rods 14 in a welding mode; one end of the other group of supporting rods 13 is fixedly connected with the supporting column 9, and the other end of the supporting rods is connected with the damping rods 14 in a welding mode; an internal damping spring 16 is arranged between the two groups of damping rods 13, and the internal damping spring 16 is in a loose state; an external damping spring 8 is arranged between the two groups of support rods 14, and the external damping spring 8 is in a loose state; the two groups of shock absorption rods 14 are fixedly connected with each other through a sleeve 15, and when an earthquake occurs, the sleeve 15 is disconnected from the two groups of support rods 13 due to the action of the earthquake force, so that a part of earthquake energy is consumed; after the sleeve 15 is disconnected, the damping energy dissipation device 6 is not fixed, at this time, the internal damping spring 16 and the external damping spring 8 start to work, the spring deformation is generated to buffer and dissipate the energy input by the earthquake, and the support has the function of resetting.

Preferably, the external damping spring 8 and the internal damping spring 16 both adopt the best quality spring steel, and the spring steel has the advantages of low frequency and large damping, and can effectively resist the horizontal force of the earthquake action and consume the energy input by the earthquake level.

The rubber stopper 7 is arranged below the inner wall of the side fixing device 5, the rubber stopper 7 is fixedly connected with the side fixing device 5, the rubber stopper 7 can prevent the supporting column 9 from being damaged due to collision with the side fixing device 5 when the supporting column 9 is displaced greatly, and meanwhile, the buffering effect on the supporting column 9 can also be achieved.

The working principle is as follows: when an earthquake occurs, the energy input by the earthquake is transmitted to the lower support plate 11 through the bridge piers and is transmitted to the rubber base plate 10 upwards, and the rubber base plate 10 buffers and consumes a small part of the earthquake energy; after the earthquake input energy overcomes the static friction force between the rubber base plate 10 and the supporting column 9, the supporting column 9 and the rubber base plate 10 generate relative displacement, and the generated sliding friction continuously consumes the earthquake input energy; the displacement of the supporting column 9 causes the sleeve 15 in the buffering and damping device 6 to be broken, and a small part of seismic energy is consumed; the internal damping spring 16 and the external damping spring 8 deform, seismic energy is converted into elastic potential energy under the action of the double damping springs, and most of seismic input energy is consumed; when the supporting column 9 is displaced greatly, the rubber stopper 7 on the inner wall of the side fixing device 5 starts to work, buffers and consumes a small part of seismic energy; after the earthquake is finished, the buffering and damping device has certain resetting capability, and the support can be reset to the original form through slow recovery, so that the earthquake-proof device is practical.

The foregoing is considered as illustrative and exemplary embodiments of the present invention, and it is understood that various changes, modifications, substitutions and improvements may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. The utility model provides a from energy-consuming type bridge damping support of reset buffering which characterized in that: the bridge supporting device comprises a lower support plate (11), a side fixing device (5), a rubber base plate (10), supporting columns (9), a buffering and damping device (6) and an upper supporting member (2), wherein the upper supporting member (2) is fixedly connected with a bridge above the upper supporting member through an upper anchor bolt (1), and the lower support plate (11) is fixedly connected with a pier below the lower supporting member through a lower anchor bolt (12);

the side fixing device (5) is of a square frame structure, the bottom of the side fixing device is fixed on the lower support plate (11), the rubber base plate (10) is arranged on the inner side of the side fixing device (5), and the bottom of the side fixing device is fixed on the lower support plate (11);

the supporting columns (9) are placed on the rubber base plates (10), and a plurality of buffering and damping devices (6) connected with the supporting columns and the inner walls of the side fixing devices (5) are arranged between the outer walls of the supporting columns and the inner walls of the side fixing devices.

2. The self-resetting buffering energy-consuming type bridge damping support according to claim 1, characterized in that: the top of the side fixing device (5) is provided with a limiting frame integrally formed with the side fixing device, and the limiting frame is provided with an opening for the top of the upper supporting member (2) to penetrate through.

3. The self-resetting buffering energy-consuming type bridge damping support according to claim 2, characterized in that: the cross section of the upper supporting component (2) is in a convex shape, a gap is arranged between the outer wall of the upper part of the upper supporting component and the opening of the limiting frame, and a sealing ring (3) is arranged between the gaps.

4. The self-resetting buffering energy-consuming type bridge damping support according to claim 1, characterized in that: an intermediate steel plate (4) is arranged between the upper supporting member (2) and the supporting column (9), and the top of the intermediate steel plate (4) is fixedly connected with the bottom of the upper supporting member (2); the top of the supporting column (9) is in contact with the bottom of the middle steel plate (4).

5. The self-resetting buffering energy-consuming type bridge damping support according to claim 1, characterized in that: the buffer damping device (6) comprises two groups of supporting rods (13), two groups of damping rods (14), a sleeve (15) and a built-in damping spring (16), wherein one end of one group of supporting rods (13) is fixedly connected with the side fixing device (5), and the other end of the one group of supporting rods (13) is connected with the damping rods (14) in a welding mode; one end of the other group of supporting rods (13) is fixedly connected with the supporting column (9), and the other end of the supporting rods is connected with the damping rods (14) in a welding mode; a built-in damping spring (16) is arranged between the two groups of damping rods (14), and the built-in damping spring (16) is in a loose state; the two groups of shock absorption rods (14) are fixedly connected with each other through a sleeve (15).

6. The self-resetting buffering energy-consuming type bridge damping support according to claim 5, characterized in that: an external damping spring (8) is arranged between two groups of supporting rods (13) of the buffering damping device (6), and the external damping spring (8) is in a loose state.

7. The self-resetting buffering energy-consuming type bridge damping support according to claim 1, characterized in that: and a rubber stop block (7) is arranged below the inner wall of the side fixing device (5).