Extrusion type abrasion seismic isolation device

Abstract

The invention provides an extrusion type abrasion seismic isolation device comprising a lower ground ring beam and an upper ground ring beam. A groove formed in the length direction of the top face ofthe lower ground ring beam is formed in the top face of the lower ground ring beam. Multiple limiting blocks arranged in the length direction of the lower ground ring beam at intervals are arranged in the groove. The groove is divided into multiple limiting grooves through the multiple limiting blocks. A slippage layer is laid on the bottom face of each limiting groove, and an isolation layer islaid on the side face of each limiting groove. Multiple lugs are arranged on the bottom face of the upper ground ring beam and extend into the multiple limiting grooves correspondingly. The positions,located on the two sides of the corresponding lug, in each limiting groove are each filled with an abrasion layer. The bottoms of the lugs and the bottoms of the abrasion layers all abut against theslippage layers. The extrusion type abrasion seismic isolation device has the beneficial effects that the structure is simple, cost is low, construction is easy and convenient, and functions can recover after earthquakes; and the extrusion type abrasion seismic isolation device is suitable for base abrasion seismic isolation devices of the multi-layer and low-layer brickwork structure, and therefore while the total seismic energy input into the upper portion structure is reduced on the basis of the base slippage seismic isolation technology, the upper portion structure is protected by furtherdissipating the seismic energy through the abrasion layers.

Description

technical field [0001] The invention relates to the field of vibration isolation technology, in particular to an extrusion type abrasion isolation device. Background technique [0002] The purpose of seismic design of building structures is to reduce the seismic action to prevent structural damage caused by strong earthquakes. Since the natural vibration period of most multi-story structures is close to the characteristic period of ground motion, and the structure consumes little energy in the elastic range, when the structure enters the elastic-plastic range, the "resonance-like" effect and the deformation develop rapidly, resulting in the structural Damage and destruction of nonstructural components. The traditional anti-seismic idea is to increase the ductility of the structure or component so that the structure can consume the seismic energy input into the structure within the elastic-plastic range and prolong the plastic deformation time. The idea is to dissipate seis...

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Problems solved by technology

The key materials of the above-mentioned simple seismic isolation technology are all related to organic matter such as rubber or asphalt. Since the durability of the material is difficult to last the same life as the structure, in random earthquakes, the reliability of the seismic isolation performance is obviously restricted.

[0006] Generally speaking, masonry structure is one of the main structural forms of village and town buildings. Most of its foundations are strip foundations. Standard techniques such as rubber bearing isolation are not applicable due to problems such as price and workmanship. The existing simple isolation of villages and towns Technology often cannot take into account key requirements such as seismic isolation performance, durability, limit function, reset function, low cost, convenient and reliable construction, etc.

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