RTRI REPORT Mar. 2003
PAPERS

A Prediction Method of the Ground Behavior During Shield Tunneling

Yutaka SATO,  Shinji KONISHI


  Stress boundaries have conventionally been used to predict ground movements during shield tunneling in the plain strain two-dimensional finite element analysis. Based on the excavated surface displacement boundary input, this study proposes a ground displacement prediction method for shield tunneling. The results of the proposed method was compared with the field measurement and evaluated. As a result, it was made clear that asymmetrical surrounding ground displacement during curve line excavation could be simulated by the proposed method at higher precision than that by the conventional method to use stress boundary inputs.


* Full papers of RTRI Report are written in Japanese.

Copyright (c) 2003 Railway Technical Research Institute