3次元逐次掘削プログラムによるトンネルの解析

抄録

In connection to the analysis of tunnels, one of the important points is to understand the three dimensional effects of excavations. But almost all the existing numerical methods in FEM assume plane strain conditions along the tunnel axis and hence they are 2D methods. Thereby, for engineers it is quite difficult to understand the 3D effects of excavations.
The present study simulates the actual NATM procedure by performing 3D FEM analysis and examines the 3D effects of an excavation.