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A trigger-type limited negative stiffness high-strength spring shock-absorbing support

A technology of shock-absorbing bearings and negative stiffness, which is applied in bridge materials, buildings, bridge construction, etc., can solve the problems of no horizontal stiffness, large displacement of damaged structures, and low shock-isolation layers, so as to improve vertical bearing capacity and long-term The effect of reducing the natural vibration period and displacement response

Active Publication Date: 2021-06-25
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

However, the effective isolation of structures with longer natural vibration periods cannot be achieved. The main reason is that there is no isolation layer with low horizontal stiffness, and at the same time, large displacements that damage the structure itself will occur after a large earthquake

Method used

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  • A trigger-type limited negative stiffness high-strength spring shock-absorbing support
  • A trigger-type limited negative stiffness high-strength spring shock-absorbing support
  • A trigger-type limited negative stiffness high-strength spring shock-absorbing support

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Embodiment Construction

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0028] The embodiment of the invention provides a trigger-type limited negative stiffness high-strength spring shock-absorbing support.

[0029] Please refer to Figure 1-4 , figure 1 It is a structural diagram of a trigger-type limited negative stiffness high-strength spring shock-absorbing support in an embodiment of the present invention, figure 1 Figure (a) is the structural diagram of the trigger-type limited negative stiffness high-strength spring damping support when the PTFE plate 8 is not installed, figure 1 (b) is the structural diagram of the trigger-type finite negative stiffness high-strength spring shock-absorbing support when the polytetrafluoroethylene plate 8 is installed, figure 1 (c) is the side vi...

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Abstract

The invention provides a trigger-type limited negative stiffness high-strength spring damping support. The trigger-type limited negative stiffness high-strength spring damping support includes: an upper connecting steel plate, a support upper structure, a support column, a spring combination, and a rubber support Layer and lower connecting steel plate; there is a support superstructure on the top of the upper connecting steel plate, several supporting columns are vertically hinged on the upper connecting steel plate and the lower connecting steel plate, and a rubber bearing layer is installed between the upper connecting steel plate and the lower connecting steel plate, and the spring The combination is vertically anchored to the upper connecting steel plate and the lower connecting steel plate, and hinged to the upper connecting steel plate and the lower connecting steel plate to form a “K”-shaped composite member. The invention has the beneficial effects of providing sufficient bearing capacity when the earthquake magnitude is low, triggering the negative stiffness performance when the earthquake magnitude is large, and combining the negative stiffness and ordinary positive stiffness isolation bearings in parallel, the total hysteresis curve is relatively full, making the isolation The seismic layer has a large damping ratio, effectively reduces the displacement response of structural vibration, and obtains a relatively ideal seismic isolation effect.

Description

technical field [0001] The invention relates to the technical fields of civil engineering and earthquake engineering, in particular to a trigger-type limited negative stiffness high-strength spring damping support. Background technique [0002] my country is located between the two major earthquake zones and is a country prone to earthquakes. In recent years, our country has experienced the Wenchuan earthquake and the Ya'an earthquake, which have caused great harm to our people. On the basis of summarizing the experience and lessons of earthquake damage, the concept of seismic design of structures has penetrated into the design thinking of structural engineers. In the seismic design of structures, the passive damping control technology has been developed maturely, and the base isolation method has been widely used. This design concept mainly relies on the application of a flexible isolation layer with sufficient reliability between the foundation and the superstructure to p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/04E01D101/30E01D101/34E01D101/40
CPCE01D19/04E01D19/041E01D19/042E01D19/046E01D2101/30E01D2101/34E01D2101/40
Inventor 陈启维庞于涛段浩杰陶复旭万涛
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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