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Shock-absorbing seat

A seismic isolation bearing and damping material technology, applied in bridge parts, bridge construction, bridges, etc., can solve the problems of high lead core cost, damage to people's health, lead pollution, etc., and achieve stable damping effect, low price, and simple manufacturing. Effect

Inactive Publication Date: 2005-09-07
尹学军 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the damping effect of the lead core rubber bearing is relatively ideal, due to the disadvantages of lead pollution, damage to people's health, and the inability to automatically reset after plastic deformation during the process of manufacturing and use of the lead core, and the cost of the lead core High, which hinders its large-scale application

Method used

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  • Shock-absorbing seat
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  • Shock-absorbing seat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the shock-isolation support is cylindrical or square column-shaped, and its axial section is rectangular. The elastic body 2 is high-quality rubber, and a cavity is set in the center of the elastic body 2 and the metal plate 1 along the arrangement direction of the metal plate 1. A non-metallic damping body is placed in the chamber, and 5 is the upper and lower sealing plates, wherein the upper sealing plate is opened to facilitate the loading of the damping body. The non-metallic damping body is a solid damping material 31. In this example, it is a modified asphalt mat filled with short fibers, which is solid at room temperature, and the material damping ratio can reach 30-50%. This damping material is embedded in the cavity by hot-melting and then sealed with a seal 6 .

[0034] When the building using this kind of isolation support is in an earthquake, because the horizontal stiffness of the support is very low, under the action of the ear...

Embodiment 2

[0036] Such as figure 2 As shown, compared with Embodiment 1, the solid damping material 31 is embedded with filling material that can increase the frictional damping of the damper when the support deforms. This example is a thin aluminum plate 41, and the solid damping material is filled between the aluminum plates 41. The seismic isolation bearing with this structure, when subjected to an external force in the horizontal direction, such as an earthquake, relative translation occurs on the upper and lower sides of the bearing, and the bearing is subjected to horizontal shear deformation, forcing the damping body in the bearing chamber to undergo shearing. At the same time, the aluminum plate 41 is relatively translated, and the damping body between the aluminum plates is sheared. Since the solid damping material 31 has high damping, it will generate a resistance opposite to the direction of motion, and convert external energy into heat energy, absorbing and consuming The ear...

Embodiment 3

[0039] Such as image 3 As shown, compared with Example 2, there are at least two chambers, and a solid damping material 31 is placed in the chamber, and a filler that can increase the internal frictional damping of the damping body when the support deforms is embedded in the solid damping material 31. This example is The bundles 42 consist of aluminum rods, and solid damping material is filled between the bundles 42 . The shock-isolation bearing with this structure, when subjected to an external force in the horizontal direction, the upper and lower sides of the bearing will move in relative translation, and the bearing will be subjected to horizontal shear deformation, forcing the damping body in the bearing chamber to undergo shear-based deformation. The inclination of the rod bundle 42 leads to relative axial displacement between the rods, and the damping body located around the rod bundle is sheared by the rod bundle 42. Since the solid damping material 31 has high dampin...

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Abstract

A vibration isolating base of high building or bridge for isolating the horizontal vibration in different directions is composed of the laminated elastomer and metal plate layers and non-metal damping body. Its advantages are simple structure, high effect and low cost.

Description

technical field [0001] The invention belongs to the fields of buildings, engineering structures and bridge structures, and in particular relates to a shock-isolation bearing. Background technique [0002] Buildings and engineering structures, including buildings, bridges, etc., will produce a large seismic response displacement when subjected to an earthquake, and the structure may be destroyed if the displacement is too large. [0003] The traditional anti-seismic measure is to strengthen the strength of the structural system, which not only increases the project cost, but also has unsatisfactory anti-seismic effect. Base isolation technology is a reasonable and effective engineering anti-seismic method developed rapidly in recent years. Various isolation supports, such as sliding and rolling isolation devices, are installed between the building and the foundation. Isolate the transmission of seismic force to the upper structure. [0004] With th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04H9/02
CPCE04H9/022
Inventor 尹学军
Owner 尹学军