Abstract
Based on the construction records and the previous researches, the excavated area, the tail clearance, the dynamic equilibrium condition, the rotation direction of cutter face, the slide of shield, and the ground loosening at crown of shield are considered to give the influence on shield behavior during excavation. In this paper, the theoretical dybamic load model on shield was proposed, taking account of the above-mentioned conditions. The simulation and the sensitive analysis on shield behavior were carried out. The obtained results were examined, based on the theory and the empirical law. As a result, it was confirmed that the proposed model can represent the shield behavior reasonably.
