The Effect of overlying Strata on the Distribution of Ground Movements Induced by Tunnelling in Clay (IS-TOKYO'1999 「軟弱地盤における地下建設の地盤工学的諸問題」特集号)

概要

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The need for accurate predictions of tunnelling-induced ground movements has led to increased research activity over the past 30 years. However, there has been very little investigation into the problem of tunnelling in multi-layer ground or the associated subsurface movements. This paper presents data from a series of centrifuge model tests aimed specifically at investigating the effect of stiffness of an overlying layer on ground movements above tunnels driven in clay. Results of the tests indicate that the stiffness of the upper strata has a significant influence on the distribution of movements in the lower clay layer and current design methods of settlement prediction may then under-estimate the width of the subsurface settlement troughs.
社団法人地盤工学会の論文
1999-06-15