Tensile-strengthened rubber isolation bearing

Abstract

The invention relates to a tensile-strengthened rubber isolation bearing and belongs to the field of structural engineering seismic mitigation and isolation. The tensile deformation capacity is enhanced by arranging vertical open seams at a specific position of a rubber layer without affecting other mechanical properties, thereby forming the tensile-strengthened rubber isolation bearing. The vertical open seams are disposed close to a symmetrical shaft at the middle of the rubber layer between isolation bearing steel plate layers, the position of the symmetrical shaft is filled with an energyconsumption component after all the steel plate layers and the rubber layer are formed, and finally sealing plates are disposed at the upper end and the lower end. The vertical deformation of the isolation bearing is large, and the number of the seams can be set according to the deformation requirements; and the set seams do not affect vertical stiffness, vertical bearing capacity and horizontal shear stiffness and deformation. The tensile-strengthened rubber isolation bearing is suitable for shock insulation design and analysis of irregular complex structures. The tensile-strengthened rubberisolation bearing is simple in structure and convenient to construct, does not increase material cost, and has good anti-vibration performance and tensile property.

Description

technical field [0001] The invention relates to a structure shock-isolation bearing, which belongs to the field of shock-absorption and isolation in structural engineering. Background technique [0002] With the development of the economy, there have been many structures with irregular planes and spaces, and it is necessary to use seismic isolation technology to reduce their seismic requirements, thereby improving their seismic safety performance. However, this type of seismic isolation structure often has tension on the isolation layer. For example, (1) the height-to-width ratio of the isolation structure is relatively large. When the earthquake is large, the upper structure will sway and sway, and some parts of the rubber bearing will be pulled; ( 2) The plane layout of the isolation structure is irregular, and the eccentric torsion effect is obvious during the earthquake, which will cause some rubber bearings to be stretched; (3) The vertical earthquake and horizontal ear...

AI Technical Summary

Problems solved by technology

However, this type of seismic isolation structure often has tension on the isolation layer. For example, (1) the height-to-width ratio of the isolation structure is relatively large. When the earthquake is large, the upper structure will sway and sway, and some parts of the rubber bearing will be pulled; ( 2) The plane layout of the isolation structure is irregular, and the eccentric torsion effect is obvious during the earthquake, which will cause some rubber bearings to be stretched; (3) The vertical earthquake and horizontal earthquake act at the same time, which may make some rubber bearings in a stretched state However, the tensile capacity of the rubber isolation bearing is very low. Under the simultaneous action of horizontal and vertical earthquakes that are rare in earthquakes, the tensile stress greater than 1Mpa may cause damage to the bearing, and the rubber layer of the bearing may be damaged when it continues to increase. Fracture damage, affecting the safety of the structure

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