Research On The Seismic Response Analysis Of Civil Air Defense Engineering And Application To The Emergency Shelter

Earthquake emergency shelters are important places for post-earthquake resettlement of victims.However,with the development of urbanization and the scarcity of land resources,the construction of earthquake emergency shelters has stagnated,resulting in insufficient resettlement of affected residents after the earthquake.Considering that there are a large number of civil defense projects in China,if they can be used as emergency shelters after the earthquake,it can not only alleviate the shortage of earthquake emergency shelters,but also improve the efficiency of underground civil defense projects,so as to avoid the idle of civil defense resources.Therefore,it is of great significance and engineering application value to carry out the research on the dynamic characteristics of civil air defense engineering under earthquake and the technical research of emergency shelter.Therefore,this paper takes a single and auxiliary civil air defense project in Beijing as the research object,analyzes the influence of different ground motions on underground civil air defense projects,and studies the measures of civil air defense projects in the technology of earthquake emergency shelters.The main work is as follows :Firstly,according to the requirements of relevant domestic norms,the number,area and type of existing earthquake emergency shelters in each administrative region of Beijing are analyzed.Secondly,according to the dynamic finite element analysis theory,two different types of numerical simulation models of underground civil air defense engineering structures are established by using Midas GTS NX software with artificial free field boundary.The seismic response analysis is carried out by using time history analysis method,and the seismic response of underground civil air defense engineering structures is obtained.The dynamic response characteristics of two typical civil air defense projects under different ground motions are studied.Thirdly,according to the functional requirements of earthquake emergency shelters,the relevant conversion measures of civil air defense engineering and earthquake emergency shelters are proposed,which can provide reference for other areas in China.