COMPARISON BETWEEN FINITE ELEMNT ANALYSIS AND SEISMIC DISPLACEMENT METHOD ON A TRANSMISSION COEFFICIENT OF SEISMIC AXIAL STRAIN OF SHIELD-DRIVEN TUNNELS

Abstract

In order to examine the applicability of seismic displacement method to seismic axial response of shield-driven tunnels, the comparison between seismic displacement method and finite element analysis is carried out in this paper, for a water supply tunnel, a common conduit and a large-diameter road tunnel, respectively. The two different methods are compared by using a transmission coefficient of axial strain from ground to tunnel as an indicator. Then, a quantitative evaluation on the applicability of seismic displacement method to a seismic design of shield-driven tunnels with relatively large diameter is investigated based on analytical approach.