To study the seismic property of vajra throne pagoda of Cideng Temple in Hohhot

Inner Mongolia Autonomous Region

the dynamic property of five tower above vajra throne were tested and a numerical model was built to calculate the dynamic characteristics of structures.We determine the equivalent elastic modulus of structure by comparing the dynamic property

and output the tower stress response

the elastic displacement response

the maximum interstory drift ratio of each layer and the bottom acceleration time history by inputting El Centro ground motion to calculate the seismic response of pagoda.Results indicate that the maximum value of horizontal shear stress is located in the middle of middle tower and at the bottom of side tower;the maximum value of vertical axial stress was located at the bottom of both tower;the maximum value of inter-story displacement was located at the top of both tower.The weak structures layer of middle tower are four-layer and top and side tower are at bottom and top.Pagoda of Cideng Temple can be basically integrity under frequent earthquake of intensity 8 but will suffer heavy damage in the top of structure under rare earthquake of intensity 8.The follows were indicated by calculation results that vajra throne reduces the calculated frequency of tower

increases the acceleration amplitude at the bottom of tower

which are bad for the seismic property of the pagoda.