Three-dimensional isolation bearing with adjustable vertical early rigidity

A seismic isolation bearing and vertical isolation technology, applied in the direction of earthquake resistance, building components, building types, etc., can solve the problems of reducing the cost of vibration isolation, shortening the effective working length of the spring, and unable to stretch and consume energy and reduce vibration. The effect of cushioning tensile and compression shocks, reducing wind and shock costs, and reducing the risk of overturning

Pending Publication Date: 2016-12-21
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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  • Three-dimensional isolation bearing with adjustable vertical early rigidity
  • Three-dimensional isolation bearing with adjustable vertical early rigidity
  • Three-dimensional isolation bearing with adjustable vertical early rigidity

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] See figure 1 , The three-dimensional seismic isolation support in this example is composed of a laminated rubber seismic isolation support and a vertical seismic isolation support connected in series.

[0037] See figure 1 with 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 The connecting plate 14 and the lower connecting plate 15 are both 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 made up of a layer of rubber 17-1 and a layer of steel plate 17-2 alternately After being laminated, it is formed by compression and vulcanization, and a rubber protective layer 17-3 is naturally formed around it during the compression and vulcanization process. The upper and lower end fa...

example 2

[0051] This example has the following differences from Example 1:

[0052] See Figure 8-10 Both the first group of pre-compressed steel cables 8 and the second group of pre-compressed steel cables 9 are composed of three pre-compressed steel cables. The number of the rigging screw buckles 19 is reduced to six, and they are respectively connected in series in the middle of each pre-compressed steel cable.

[0053] See Figure 8 In order to increase the bearing capacity of the cylindrical rubber elastic body 4 and prevent it from losing stability in the horizontal direction due to excessive axial length, the cylindrical rubber elastic body 4 in this example consists of two layers of solid rubber blocks 4-1 and one layer The steel plates 4-3 are alternately laminated and vulcanized to form an elastic body, and the two ends of the elastic body are provided with end plates 4-2.

[0054] The above-mentioned implementation method of this example is the same as that of Example 1.

example 3

[0056] See Figure 11~13 The difference between this example and Example 2 is that the first group of pre-compressed steel cables 8 and the second group of pre-compressed steel cables 9 are both composed of five pre-compressed steel cables. The number of the rigging screw buckles 19 is reduced to ten, and they are respectively connected in series in the middle of each pre-compressed steel cable.

[0057] Embodiments other than the above in this example are the same as in Example 2.

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PUM

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Abstract

The invention discloses a three-dimensional isolation bearing with adjustable vertical early rigidity. The three-dimensional isolation bearing comprises a laminated rubber isolation bearing and a vertical isolation bearing which are sequentially connected in series vertically and is characterized in that a back pressure device is arranged inside a guiding sleeve of the vertical damping bearing, the back pressure device comprises two prepressing steel cables and two floating pressing plates, the two prepressing steel cables are distributed between a cylindrical rubber elastomer and the guiding sleeve, one end of one prepressing steel cable is fixed to the floating pressing plate adjacent to a driving plate, and the other end of one prepressing steel cable penetrates through the floating pressing plate adjacent to the base to be fixed to the base; one end of the other prepressing steel cable is fixed to the floating pressing plate adjacent to the base, and the other end of the other prepressing steel cable penetrates through the floating pressing plate adjacent to the driving pressing plate to be fixed to the driving pressing plate; each prepressing steel cable is provided with a slip-hook turnbuckle in series; the two prepressing steel cables are tensioned, so that the cylindrical rubber elastomer 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 composed of a sandwich steel plate rubber pad and a vertical vibration isolation support in series. Background technique [0002] The seismic isolation device is a seismic isolation device located between the building and the foundation. Early seismic isolation devices were mainly two-dimensional seismic isolation bearings (laminated rubber seismic isolation bearings) composed of alternately laminated 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 seismic isolation devices have gradually attracted the attention of researchers in this field. The most common three-dimensional seismic isolation device is composed of laminated rubber seismic isolation bea...

Claims

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Application Information

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IPC IPC(8): E04B1/36E04B1/98E04H9/02
CPCE04B1/36E04B1/98E04H9/021E04H9/022
Inventor 沈珊胡济福胡济全
Owner ANHUI XINZE TECH CO LTD
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