Damping controlling method for jacketing frame layer reinforced structure

Abstract

The invention relates to a shock absorption control method for a layer-added structure of an outer jacket frame, which belongs to the field of anti-seismic technology of building engineering structures. The purpose is to provide a new type of vibration reduction control method for the layer-added structure system of the jacket, so as to improve the overall seismic capacity of the layer-added structure (1) and the original structure (2), reduce the response of the structural system under earthquake action, and solve the problem of adding layers. Safety issues of structural systems under earthquake action. The present invention is characterized in that a graphite friction cushion (3) is set between the top floor of the old building (2) and the additional layer structure (1), and a soft steel damper (4) is added at the connection point of each layer of the two structures to Absorb dissipated energy. The effect and benefit of the present invention is that this new type of damping system can improve the safety of the outer jacket frame structure in the earthquake zone, and has a simple structure, convenient construction, and low cost. , will produce huge economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of anti-seismic technology of building engineering structures, and relates to a method for improving the overall anti-seismic performance of the layered structure and the original structure of an outer jacket frame by using a graphite friction cushion and a mild steel damper. Background technique [0002] In recent years, with the development of urban construction and real estate, the issue of fully using land has attracted more and more attention. Among them, adding floors to existing buildings is one of the effective ways to alleviate land shortage. It has the advantages of less investment, no additional land occupation, and saving urban preparation fees. There are many ways to increase the floor of houses at home and abroad, and successful examples are not uncommon. Combined with the complexity of the actual situation of multi-story houses, many structural forms have appeared in the construction and des...

AI Technical Summary

Problems solved by technology

[0003] In non-earthquake areas, it is easier to realize the construction of adding layers, but in seismic areas, there are many types of adding layers that are restricted.

In addition, in view of the fact that there is currently no seismic identification and design standards for story-adding projects in my country, most story-adding projects mainly "resist" earthquake action by enhancing the performance of the station structure, that is, the structures themselves and the added stories The overall reserve is used to dissipate the seismic energy to meet the seismic fortification requirements of the structure

However, since people cannot accurately estimate the earthquake intensity and characteristics that the structure may encounter in the future, the seismic performance of the structure designed and modified according to these methods does not have the ability of self-control and self-regulation. Under the action of strong earthquakes, the structure may not meet the safety requirements Finally, the integrity of the structure after adding layers is weakened, resulting in serious damage and even collapse

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