Author(s)

J-N. Wang, G.A. Munfakh

Abstract

An analytical approach is presented for dealing with the seismic design and analysis of both bored (circular) and cut-and-cover (rectangular) tunnels. This approach considers the soil-structure interaction effect and focuses on the ovaling/racking deformation aspect of the tunnel structures. The procedure presented for the bored tunnels is developed from a theory that is familiar to most mining/underground engineers (Peck et al., 1972). Simple and easy-to-use seismic design charts are presented. The design charts are expressed primarily as a function of relative stiffness between the structure and the ground. The results are validated through a series of finite element/difference soil-structure interaction analyses. For the cut-and-cover tunnels, the design

Keywords