Application Of Response Defofmation Method In Seismic Design Of Underground Structures

With the rapid population growth and the development of social economy,increasing traffic congestion has become a common problem of many cities.The subway has become one of the effective means to ease traffic pressure and seep up urban rhythm.The previous seismic damages of underground structures prove that it lead to heavy casualties and property losses as soon as it is damaged by earthquake.For subway structure is embedded in soil,it is difficult to repair structures.Therefore,the study of earthquake resistance of the underground structures is of great significance to reduce the damage and ensure the safety of people's property.The basic principle of the response deformation method is firstly introduced in this paper.By means of one-dimensional seismic response analysis,the dynamic response of each soil layer under the action of ground load is obtained.Then we engage in structure anti-seismic calculation by building the calculation model of the structure.Then Nongye east station of subway NO.3 in Zhengzhou is taken as engineering background,effects of soil thickness on result is analyzed.The dynamic response of the underground structure under the action of ground motion is solved by means of the one-dimensional seismic response program EERA.The effects of soil thickness on result is analyzed.The methods of response deformation and time history analysis method are applied to calculate the structure.The result indicated that the response deformation method are applicable in the seismic analysis of station.lastly response displacement method was adopted to evaluate the seismic response of the subway tunnel structure of NO.3 in Zhengzhou.