Soft steel-rolling seismic isolation bearing

Abstract

The invention provides a soft steel-rolling seismic isolation bearing and belongs to the field of seismic isolation and shock absorption control for a building structure. The upper part of the support is a cover plate structure, wherein an upper connecting plate is connected with an upper seat plate and the upper seat plate is connected with an upright post part of a rolling plate to form the cover plate structure. The rolling plate is supported on balls which are arranged in a seat groove at the bottom, the seat groove provides a rolling space for the balls so that the balls can roll freely in the seat groove at the bottom. A through cavity is formed between the upper seat plate and the rolling plate, an upper plate of an uplift cover plate can be inserted into the through cavity when horizontally moving, and a lower plate of the uplift cover plate is fixedly connected with the seat groove. The seat groove is arranged in a cavity formed at the lower part of the uplift cover plate. A soft steel rod is arranged at each corner of four corners of each of the upper connecting plate and the uplift cover plate. The bearing is simple in structure and definite and reasonable in force transfer; the performances of materials are given a pull play, the specification is uniform, the stability of all performances is high; moreover, the bearing is good in applicability, convenient to manufacture and install and high in practicability and is suitable for seismic isolation of a large-span space structure.

Description

technical field [0001] The invention relates to a shock-isolation bearing, which belongs to the field of shock-isolation and shock-absorbing control of building structures. Background technique [0002] With the overall progress of human society and the continuous development of architectural science and technology, large-span spatial structures are widely used in industrial and civil buildings, and the structural forms are developing towards height, lightness and size. Long-span spatial structures have light weight, high flexibility, small damping, low natural vibration frequency, and are sensitive to wind, earthquake and other loads. The use of seismic isolation bearings in long-span spatial structures is a more feasible seismic isolation measure. At present, the supports developed and used in long-span structures are mostly laminated rubber bearings, sliding steel spherical hinge bearings and friction pendulum bearings. The rubber bearing has poor vertical pull-out resis...

AI Technical Summary

Problems solved by technology

Because the ball is made of high-strength alloy steel, it has strong pressure bearing capacity, and the friction coefficient is only about 10% of the sliding friction coefficient. Therefore, the use of rolling vibration isolation device can overcome the vertical load of the existing PTFE material Insufficient force or excessive support area

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