Shock-absorbing and isolating bearings against vertical vibrations

Abstract

The invention discloses a shock-absorbing and isolating support for resisting vertical earthquakes, which comprises: a lower bearing steel member, the bottom of the bottom plate has a structure installation site; an upper bearing steel member, the top of the top plate has a structure installation site, the The bottom of the top plate of the upper supporting steel member is in sliding and sealing connection with the top of the top plate of the lower supporting steel member, and the bottom of the bottom plate of the upper supporting steel member is in sliding connection with the top of the bottom plate of the lower supporting steel member; the vertical shock absorbing unit has The bottom is fixedly installed on the top and top of the bottom plate of the upper bearing steel member to form a gap with the bottom of the top plate of the lower bearing steel member; the bottom of the horizontal shock absorbing unit is fixed on the bottom and top of the bottom plate of the lower bearing steel member Not in contact with the bottom of the top plate of the lower bearing steel member, the horizontal damping unit forms a gap with the bottom plate of the lower bearing steel member. The invention can limit the vertical displacement of the structure and improve the ability of the support to resist vertical earthquake.

Description

Technical field [0001] The present invention relates to the field of engineering structure disaster prevention and vibration reduction technology. More particularly, the present invention relates to a shock isolation bearing that resists vertical shock. Background [0002] As a safe and economical seismic isolation control device, the seismic isolation support is widely used in the seismic design of bridges, buildings and other engineering structures at home and abroad. The stiffness of the seismic isolation support is small, which can reduce the basic vibration frequency of the structure and extend the basic vibration period of the structure, thereby avoiding the main energy band of the seismic vibration, reducing the seismic energy of the input structure, and thus limiting the seismic response of the structure. [0003] For near-fault seismic, in addition to the horizontal seismic component, the vertical seismic component has a huge impact on the seismic safety of structures us...

AI Technical Summary

Problems solved by technology

Significant vertical ground motion will cause the support to be pulled, causing the deterioration or loss of the shock absorption and isolation function of the support, and then causing serious earthquake damage such as falling beams or overturning of the structure.

[0004] At present, most of the shock-absorbing and isolating bearings commonly used in engineering do not consider the resistance capacity of vertical earthquake motion.

However, in existing shock-absorbing and isolating bearings that consider vertical earthquakes, the fitting force between the metal interfaces is often used to achieve the pull-out effect, but the requirements for the bearing capacity of the anchorage system and the interface fitting system are extremely high. For such a huge natural disaster, it is generally difficult to meet the requirements of anti-drawing under the action of vertical earthquakes.

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