Soft collision protective device suitable for ultrahigh-intensity earthquake actions

Abstract

The invention relates to the technical field of building and bridge shock insulation, in particular to a soft collision protective device suitable for ultrahigh-intensity earthquake actions. Vertical loads are not borne, and a steel shear connector and a hollow connection steel plate do not collide with each other in a set shock insulation layer horizontal displacement range. When the shock insulation layer horizontal displacement in any direction exceeds the horizontal distance between the steel shear connector and the hollow connection steel plate, the soft collision protective device has a limiting function in the horizontal direction so that the shock insulation layer horizontal displacement can be reduced, the situation that the shock insulation layer horizontal displacement is too large and accordingly a shock insulation supporting base is damaged and loses efficacy is avoided, and the adverse effect that a shock insulation structure collides with surrounding structures is avoided or mitigated. The soft collision protective device can be suitable for the ultrahigh-intensity earthquake actions, has a limiting function on a shock insulation layer, and accordingly effectively protects the shock insulation supporting base and the structures. The soft collision protective device is simple and clear in structure, clear in work mechanism, good in mechanical property, convenient to construct, and easy to maintain after earthquakes.

Description

technical field [0001] The invention relates to the technical field of building and bridge shock isolation, in particular to a soft collision protection device suitable for super-intensity earthquakes. Background technique [0002] Seismic isolation technology has become one of the most widely used shock-absorbing methods because of its simple concept, remarkable effect and stable product performance. So far, thousands of seismically isolated buildings and bridges around the world have adopted seismic isolation technology. Seismic isolation structures achieve the purpose of reducing the seismic response of the structure by prolonging the structural period (that is, the smaller stiffness of the isolation layer) and increasing the structural damping, but the horizontal displacement of the isolation layer is relatively large. Under the action of long-period earthquakes or super-intensity earthquakes, the horizontal displacement of the isolation layer can easily exceed the limit...

AI Technical Summary

Problems solved by technology

Under the action of long-period earthquakes or super-intensity earthquakes, the horizontal displacement of the isolation layer can easily exceed the limit, resulting in failure of the isolation support or hard collision between the isolation structure and the surrounding structure (hard collisions have adverse effects on the structure, and even lead to structural failure)

[0003] In order to solve the problem of the limit of the seismic isolation layer, different types of soft collision protection devices can be installed in addition to the original seismic isolation devices. Although the existing soft collision protection devices can effectively control the horizontal displacement of the seismic isolation layer, most of them are single direction limit device

In addition, the researchers proposed a hybrid control strategy, using a shock isolation device plus an active or semi-active control device, such as a combination of a shock isolation device and a magneto-rheological damper, etc. Although the hybrid control strategy works well, the structure is complex and the reliability is low

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