Compression-shear separated variable-stiffness vibration isolation support and manufacturing method thereof

Abstract

The invention provides a compression-shear separated variable-stiffness vibration isolation support and a manufacturing method thereof. The support comprises an upper support plate, a lower support plate and a vibration isolation assembly arranged between the upper support plate and the lower support plate. The vibration isolation assembly comprises a vertical vibration isolation assembly and a horizontal vibration isolation assembly. The vertical vibration isolation assembly comprises long vertical springs, short vertical springs, a damper, a limiting block groove and a limiting block. The horizontal vibration isolation assembly comprises a core steel rod, a steel sleeve and a pre-tension sleeve piece. The pre-tension sleeve piece comprises a sliding ring, a unit of shape memory alloy rods and a unit of locking nuts. The support is simple in structure and simple in machining technique, all the parts and components can be obtained and assembled easily, installation is convenient, and the cost performance is high. All the parts of the support are made of metal materials and are good in durability. Meanwhile, the stress path is clear, the vertical force and horizontal force are borneby different parts of the support, compression-shear separation can be effectively achieved. The energy-dissipating capacity and the self-resetting capacity are high. The vertical and horizontal rigidity of the support is adjustable and controllable, and vibration isolation and displacement constrain under different earthquake motions are achieved.

Description

[0001] The invention belongs to the field of shock absorption and isolation of engineering structures, in particular to a compression-shear separation type variable-rigidity shock-isolation support and a manufacturing method thereof. Background technique [0002] In the field of earthquake reduction and isolation in civil engineering, it is often necessary to use supports for earthquake isolation, and combine various energy-dissipating elements to dissipate energy and enhance the recoverable function of the structure. The use of various forms of seismic isolation bearings can reduce the effect of earthquakes on the superstructure, thereby protecting the safety of the superstructure. Commonly used isolation bearings include: rubber isolation bearings, lead rubber isolation bearings, sliding flat isolation bearings, friction pendulum isolation bearings, etc. Due to the shortcomings of the current seismic isolation bearings such as easy aging, poor seismic isolation effect, weak ...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a compression-shear separation type variable stiffness seismic isolation bearing and its manufacturing method, to solve the problems of poor durability, easy aging, weak self-resetting ability, weak energy dissipation capacity, poor seismic isolation effect of ordinary bearings at the present stage, Technical problems such as too small elastic range and poor bearing capacity

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