Efficiency And Economic Analysis Of Different Seismic Isolation Measures In Multi-storey Frame Structures

The earthquake disasters have the greatest impact on human beings.The strong destructive power of earthquake disasters can destroy buildings instantly among the natural disasters occurring in the world.The process of urbanization is getting faster and faster with the development of social modernization.Buildings are also expanding with the residential areas business district and mixed residential and commercial complexes.It is more common that residential area is connected with commercial complexes.One strong earthquake hits in a city,it will cause devastating damage.With the development of society and the continuous improvement of architectural design and construction technology,the seismic resistance of buildings can be minimize the damage caused by earthquakes.It can be done by adding appropriate seismic isolation and shock absorption measures to building structures.Therefore,the question that how to effectively reduce the impact of earthquake on buildings through shock absorption and isolation measures becomes an urgent matter,which warrants an urgent review of building design and construction.This paper mainly discusses the application of seismic isolation and shock absorption technology in multi-storey buildings.The purpose of this paper is to explore the most recommended seismic isolation and shock absorption measures with the best seismic effect and economy to be applied in building construction to facilitate engineering application and promotion.The paper mainly studies from the following aspects:1.This paper summarize the development process and research status of base isolation technology and damper damping technology at home and abroad.It is so illustrate the principle and implementation process of the existing base isolation technology and the analysis and design method of the energy dissipation structure.2.A typical three-story two-way single-span reinforced concrete frame structure model is established by finite element software.EI-Centro seismic wave is selected to be applied to the damping structures with different damper arrangements.The whole process simulation analysis is carried out on the seismic time-history response,thus different seismic response curves and data are obtained.The damping effects of different damper arrangements are compared and analyzed.After two different damper arrangements are respectively arranged at the bottom layer and each layer of the structure,the strain time-history curve and the interlayer displacement angle time-history curve of the two different damper arrangements are analyzed and compared.It is found that the X-shaped damper is economically arranged at the bottom layer.Damping is provided for each layer which has remarkable effect on reducing the interlayer displacement angle of the reference structure compared with the effect of reducing the strain time-history response.Considering that the cost of setting dampers on each floor increases exponentially.The cost of disaster reduction effect is relatively high,and the setting of dampers should be more reasonable.3.The research objective is a frame structure teaching building of the relocation project of Shuifu No.2 Middle School in Yunnan.On the premise of meeting the same performance design objectives,the engineering cost of the isolation structure system with lead rubber isolation bearings and the energy dissipation structure system with dampers are compared and analyzed respectively.The results show that the damping system with damping dampers is more economical.