Loess Tunnel Seismic Design

During the last few years, the buried structures have widely used in water power engineering, transportation engineering, urban construction, military and people's air defense project, the seismic design and performance evaluation of buried structures have become a more and more important subject to engineers. The soil and within buried structure is a result of this dynamic interaction. Based on the basic theory of soil-structure interaction, a finite element method for the analysis of loess-tunnel structure dynamic interaction is built with MARC program in this paper. With the same parameters, the seismic responses of free ground and loess-tunnel interaction system are calculated separately with MARC program. By comparing the results dynamic interaction are discussed, some graphs are presented to demonstrate the results obviously. Several advices of the seismic design of buried structures are given in conclusion is also valuable even to the analysis of building structures, bridges and dynamic machine foundation, etc.