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Trigger type limited negative stiffness high-strength spring damping support

A technology of shock-absorbing bearings and negative stiffness, which is applied to bridge parts, bridge materials, bridges, etc., can solve the problems of no horizontal stiffness, low isolation layer, and inability to achieve effective isolation of natural vibration period structures

Active Publication Date: 2020-10-27
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Application Information

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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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  • Trigger type limited negative stiffness high-strength spring damping support
  • Trigger type limited negative stiffness high-strength spring damping support
  • Trigger type limited negative stiffness high-strength spring damping 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 comprises an upper connecting steel plate, a support upper-layer structure, supporting columns, a spring combination, a rubber support layer and a lower connecting steel plate. The support upper-layer structure is arranged at the top end of the upper connecting steel plate; and the supporting columns are perpendicularly hinged to the upper connecting steel plate and the lower connecting steel plate, the rubber layer support is installed between the upper connecting steel plate and the lower connecting steel plate, and the spring combination is perpendicularly 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'' combined component. The damping support has beneficial effects that an enough bearing force is provided when an earthquake magnitude is low, negative stiffness performance is triggered when the earthquake magnitude is large, the negative stiffness and a commonpositive stiffness shock insulation support are combined in parallel, a total hysteretic curve is full, a shock insulation layer has a large damping ratio, a displacement response of structural vibration is effectively reduced, and an ideal shock insulation effect is achieved.

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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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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