A critically unlocked vertical shock-isolation bearing and method

Abstract

The invention relates to the field of engineering structure shock isolation and equipment vibration control and provides a critical unlocking vertical isolation bearing and a method of the critical unlocking vertical isolation bearing. According to the critical unlocking vertical isolation bearing, prestress is applied to the position between an upper support plate and a lower support plate through a first locking component, a second locking component and a first elastic piece, so that part of deformation generated after the critical unlocking vertical isolation bearing bears the vertical load can be eliminated, when the first locking component and the second locking component conduct locking, the critical unlocking vertical isolation bearing has the large initial vertical rigidity, and meanwhile the purpose that the smaller rigidity of the first elastic piece can be set is achieved; and besides, when the pressure value of the upper support plate reaches the set value under the effect of a design earthquake, the opposite motions of the upper support plate and the lower support plate force a lock tongue to be separated from a lock hole, and the first locking component and the second locking component rotate relatively to complete unlocking, and therefore the first elastic piece with the small rigidity and a damper extend and contract under the earthquake effect for consuming energy, and the better shock isolation purpose is achieved.

Description

technical field

[0001] The invention relates to the fields of engineering structure vibration isolation and equipment vibration control, in particular to a critically unlocked vertical vibration isolation support and a method thereof. Background technique

[0002] Seismic isolation technology is to set a flexible layer between the upper structure of the building and the foundation. This kind of flexible layer with less rigidity is consciously set at a certain level of the building, which can effectively prolong the natural vibration period of the entire structural system and increase the damping. Reduce the seismic energy input of the upper structure, and then flexibly resist earthquakes, so as to achieve better overall economy and more reliable safety expectations.

[0003] In the prior art, there are few studies on isolation of vertical vibration caused by vertical earthquakes. Among them, the difficulty in the vertical seismic isolation design of buildings lies in how to...

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