DESIGN OF LINKING, FIELD OBSERVATION AND FEM ANALYSIS FOR NON-CIRCULAR SHIELD TUNNEL

Abstract

This report presents a concept for the design of lining of a non-circular shield tunnel, which is an approach adopted to deal with restrictions in the tunnel width imposed by a land boundary and by foundation piles. This report also presents the results of field observations, and a method of analysis to forecast its effects on surrounding ground. From the field observations, interesting results concerning the load and deformation of the surrounding ground were obtained along with desingn related knowledge of use in future shield tunnels including that for circular tunnels.