Tensile limiting isolation bearing

Abstract

The invention provides a tensile limiting isolation bearing. The tensile limiting isolation bearing comprises a bearing body, an upper connecting plate, a lower connecting plate and a tensile limitingdevice, wherein the upper connecting plate and the lower connecting plate are fixed with the upper and lower ends of the bearing body; the tensile limiting device is arranged on the periphery of thebearing body; the tensile limiting device comprises two slip limiting mechanisms which are orthogonal to each other; the two slip limiting mechanisms are connected through a flexible material. The tensile limiting device is arranged on the periphery of the bearing body, and slips freely along an axis X and an axis Y, so that the maximum deformation of the bearing body along the axis X and the axisY is limited without affecting the horizontal isolation performance of the bearing body. The flexible material bears the tensile force on the bearing body along an axis Z, so that the Z-axis tensilerigidity of the bearing is effectively enhanced. In the case of strong shock, the tensile limiting device can effectively avoid instability when the deformation of the bearing body exceeds a deformation limit; meanwhile, the Z-axis tensile performance of the bearing is enhanced, and the stability and safety of the isolation bearing are improved.

Description

technical field [0001] The invention relates to the technical field of shock isolation, and more specifically, to a tension-limiting shock-isolation support. Background technique [0002] With the rapid advancement of social modernization and urbanization, the population gradually tends to concentrate, and the social wealth grows rapidly. The huge energy carried by earthquakes also poses an increasing threat to human civilization. This forces engineering anti-seismic personnel to continuously explore and update the theory of structural anti-seismic design and methods of disaster prevention and mitigation. [0003] Earthquake disasters are mainly caused by the forced vibration of structures caused by ground motion. The basic principle of seismic isolation is to reduce the horizontal stiffness of the structure, prolong the natural vibration period of the structure, and increase the structural damping by setting the seismic isolation device, thereby effectively reducing the se...

AI Technical Summary

Problems solved by technology

However, these structures also have problems that the tensile structure significantly affects the horizontal mechanical properties of the bearing body, and the vertical height or horizontal dimension of the bearing increases significantly, which deserves further research and improvement.

Although the use of ordinary vibration-isolation rubber bearings can satisfy the function of horizontal vibration isolation, if excessive horizontal shear deformation or excessive rotation angle occurs to the vibration-isolation rubber bearings, the vibration-isolation rubber bearings will fail and even cause isolation. Earthquake structure topples and collapses

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