CONTENTS
Special Issue on Geotechnical Aspects of
Underground Construction in Soft Ground

FOREWORD ...Osamu Kusakabe and Akira Asaoka TECHNICAL PAPERS Model Tests and Numerical Simulation of Braced Excavation in Sandy Ground: Influences of Construction History, Wall Friction, Wall Stiffness, Strut Position and Strut Stiffness Teruo Nakai, Hiromichi Kawano, Kouki Murata, Masaaki Banno and Tadashi Hashimoto ... 1 Behaviour and Analysis of a Large-scale Cylindrical Earth Retaining Structure Toshio Kumagai, Kouzou Ariizumi and Atsuo Kashiwagi ... 13 Seepage Failure of Sand Behind Sheet Piles-The Mechanism and Practical Approach to Analyze- Tsutomu Tanaka and A. Verruijt ... 27 Finite Element Modelling of Excavation and Advancement Proc�Eesses of a Shield Tunnelling Machine Kazuhito Komiya, Kenichi Soga, Hirokazu Akagi, Toshiyuki Hagiwara and M. D. Bolton ... 37 Prediction of Ground Deformation due to Shield Excavation in Clayey Soils Tadashi Hashimoto, Junichi Nagaya and Takahiro Konda ... 53 The Effect of Overlying Strata on the Distribution of Ground Movements In�Educed by Tunnelling in Clay Toshiyuki Hagiwara, R. J. Grant, M. Calvello and R. N. Taylor ... 63 Centrifuge Model Tests on Double Propped Wall Excavation in Soft Clay Jiro Takemura, Midori Kondoh, Taichi Esaki, Masayuki Kouda and Osamu Kusakabe ... 75 TECHNICAL REPORTS Behavior of an Earth Retaining Wall during Deep Excavation in Shanghai Soft Ground Kiyokazu Onishi and Tadahiro Sugawara ... 89 Observations of Ground Movements during Tunnel Construction by Slurry Shield Method at the Docklands Light Railway Lewisham Extention-East London Tadashi Sugiyama, Toshiyuki Hagiwara, Toshi Nomoto, Masaaki Nomoto, Yutaka Ano R. J. Mair, M. D. Bolton and Kenichi Soga ... 99 Ground Response to the Construction of Shanghai Metro Tunnel-Line 2 K. M. Lee, H. W. Ji, C. K. Shen, J. H. Liu and T. H. Bai ... 113 ANNOUNCEMENTS ...135 JGS NEWS ...I~IV