Three-dimensional shock-insulating support base for adjusting vertical early rigidity

Abstract

The invention discloses a three-dimensional shock-insulating support base for adjusting vertical early rigidity. The three-dimensional shock-insulating support base comprises an overlapped rubber shock-insulating support base and a vertical shock-insulating support base, which are vertically connected in series with each other. The three-dimensional shock-insulating support base is characterized in that a back pressure device is arranged in a guide sleeve of the vertical shock-insulating support base; the back pressure device comprises two sets of pre-pressing wire ropes and two floating pressing plates; the two sets of pre-pressing wire ropes are distributed between a cylindrical rubber elastic component and the guide sleeve; one end of each pre-pressing wire rope in one set is fixed on the floating pressing plate adjacent to a driving pressing plate while the other end respectively penetrates through the floating pressing plate adjacent to the base and is anchored on the base through a rope self-locking tensioning anchor; one end of each pre-pressing wire rope in the other set is fixed on the floating pressing plate adjacent to the base while the other end penetrates through the floating pressing plate adjacent to the driving pressing plate and is anchored on the driving pressing plate through the rope self-locking tensioning anchor; through the tensioning of the two sets of pre-pressing wire ropes, the cylindrical rubber elastic component is clamped between the two floating pressing plates all the time.

Description

technical field [0001] The invention relates to a building anti-vibration (or vibration) device, in particular to a three-dimensional vibration isolation device connected in series with a sandwich steel plate rubber pad and a vertical vibration isolation bearing. Background technique [0002] Seismic isolation device is a seismic isolation device installed between the building and the foundation. Early seismic isolation devices were mainly two-dimensional isolation bearings (laminated rubber isolation bearings) composed of alternately superimposed rubber and thin steel plates, which could only isolate the horizontal component of seismic waves. With the improvement of people's understanding of the multi-dimensional characteristics of earthquakes, three-dimensional isolation devices have gradually attracted the attention of researchers in this field. The most common three-dimensional isolation device is composed of laminated rubber isolation bearings and existing vertical iso...

AI Technical Summary

Problems solved by technology

Although the scheme described in this patent application can improve the tensile strength of the three-dimensional seismic isolation device to resist the huge tension generated by the swaying or even overturning of high-rise buildings in an earthquake, the following deficiencies still exist: 1. The spring isolation The support can only be compressed for energy consumption and shock absorption, but cannot be stretched for energy consumption and shock absorption; 2. The spring isolation support cannot preset the early stiffness, which is not convenient for presetting the seismic intensity to reduce the cost of isolation

However, this invention still has the following disadvantages: 1. The load connecting rod is balanced under the joint action of two groups of disc springs. Although the preload of the two groups of disc springs can be adjusted, no matter how they are adjusted, the The force of the disc spring on the load connecting rod is a set of equal and opposite forces. Just applying any external force on the load connecting rod will destroy this balance and deform the two sets of disc springs. Therefore, the 2. In this invention, two sets of disk springs must be used together to provide damping when the damper is under compression or tension load, which not only causes a certain waste, but also makes the damper greatly increased in length

It can be seen that although the stiffness of the spring in the patent application scheme can be changed, the effective working length of the spring is not only significantly shortened, but also can only be compressed for energy consumption and vibration reduction, and cannot be stretched for energy consumption and vibration reduction.

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