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A three-dimensional seismic isolation device capable of adjusting vertical early stiffness

A vertical vibration isolation, three-dimensional technology, applied in the direction of earthquake resistance, building type, building, etc., can solve the problems of reducing the cost of vibration isolation, shortening the effective working length of the spring, deformation of two sets of disc springs, etc., to achieve buffer tension and compression. Impact, reduce the cost of wind resistance and shock resistance, and the effect of small vertical length

Active Publication Date: 2020-11-13
ANHUI XINZE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • A three-dimensional seismic isolation device capable of adjusting vertical early stiffness
  • A three-dimensional seismic isolation device capable of adjusting vertical early stiffness
  • A three-dimensional seismic isolation device capable of adjusting vertical early stiffness

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0038] see figure 1 , the three-dimensional isolation device in this example consists of laminated rubber isolation bearings and vertical isolation bearings connected in series up and down.

[0039] see figure 1 and Figure 4 , the laminated rubber shock-isolation bearing includes an upper connecting plate 14, a lower connecting plate 15, a laminated rubber pad 17 clamped between the upper and lower connecting plates and six tensile steel cables 16; wherein, the upper Both the connecting plate 14 and the lower connecting plate 15 are disc-shaped, and the edge of the upper connecting plate 14 is provided with mounting holes 13; the main body of the laminated rubber pad 17 is alternately composed of a layer of rubber 17-1 and a layer of steel plate 17-2 After lamination, it is molded and vulcanized, and a rubber protective layer 17-3 is naturally formed around it during the process of molded vulcanization. The upper and lower end surfaces of the main body of the laminated r...

example 2

[0055] This example has the following differences from Example 1:

[0056] see Figures 12 to 14 , the first group of preloaded steel cables 8 and the second group of preloaded steel cables 7 are composed of three preloaded steel cables. The number of the self-locking tensioning anchors 18 for steel cables is six, which are respectively used to fix the other end of each pre-compressed steel cable.

[0057] see Figures 12 to 14 In order to prevent dust and other sundries from falling on the disc spring group 4 and affect the normal operation of the damper, a protective cover 19 of rubber is wrapped on the outside of the back pressure device, and the two ends of the protective cover 19 are connected with the first floating platen respectively. 6 and the outer peripheral surface of the second floating platen 5 are bonded together. The length of the sheath 19 is greater than the distance between the upper surface of the upper end plate 2 and the lower surface of the lower end ...

example 3

[0060] see Figures 15-17 The difference between this example and Example 2 is that the upper end of the guide rod 1 is fixedly connected with the middle part of the lower surface of the upper end plate 2, and the lower end extends downward along the central hole of the disc spring group 4 until it passes through The middle part of the lower end plate 3 protrudes upward; the lower end plate 3 is in dynamic fit with the outer surface of the guide rod 1 . Between the lower surface of the raised middle part of the lower end plate 3 and the lower surface of the edge of the lower end plate 3 is formed a flexible space 11 for the lower end of the guide rod 1 to expand and contract. The first group of preloaded steel cables 8 and the second group of preloaded steel cables 7 are all composed of five preloaded steel cables; Secure the other end of each preloaded cable.

[0061] Other implementations of this example other than the above are the same as Example 2.

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PUM

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Abstract

The invention discloses a three-dimensional base-isolation device capable of adjusting vertical early stage rigidity; the three-dimensional base-isolation device comprises a lamination rubber base isolation bearer and a vertical base isolation bearer connected up and down in series; the features are that a back pressure device is arranged between two end plates of the vertical base isolation bearer; the back pressure device comprises two precompressed steel ropes and two floating pressure plates; the two floating pressure plates are respectively sleeved on a guide rod between one end plate and a disc spring assembly; the two precompressed steel ropes are symmetrically distributed around the disc spring assembly in a linear state by respectively winding the guide rod axis; in addition, one end of each precompressed steel rope is respectively fixed on one floating pressure plate, and the other end respectively penetrates the other floating pressure plate and is anchored on the end plate adjacent to the floating pressure plate by a steel rope self-locking tensioning anchorage device; the two precompressed steel ropes can be tensioned, so the disc spring assembly can be always clamped between the two floating pressure plates.

Description

technical field [0001] The invention relates to a building anti-vibration (or shock) device, in particular to a three-dimensional shock-isolation device in which a sandwich steel plate rubber pad is connected in series with a vertical shock-isolation support. Background technique [0002] The seismic isolation device is an anti-seismic isolation device installed between the building and the foundation. The early seismic isolation devices were mainly two-dimensional isolation bearings (laminated rubber isolation bearings) composed of rubber and thin steel plates alternately laminated, 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 seismic 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 connected ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04H9/02E04B1/98
CPCE04H9/021
Inventor 沈珊胡济福胡济全
Owner ANHUI XINZE TECH CO LTD
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