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Title: Effect of corners in strutted excavations: Field monitoring and case histories
Authors: Lee, F.-H. 
Yong, K.-Y. 
Quan, K.C.N.
Chee, K.-T.
Issue Date: Apr-1998
Citation: Lee, F.-H.,Yong, K.-Y.,Quan, K.C.N.,Chee, K.-T. (1998-04). Effect of corners in strutted excavations: Field monitoring and case histories. Journal of Geotechnical and Geoenvironmental Engineering 124 (4) : 339-349. ScholarBank@NUS Repository.
Abstract: This paper discusses the effects of corners on wall deflection and ground movement around multi-strutted deep excavations. To assess the significance of such effects in a typical-sized excavation in Singapore, a field monitoring exercise was conducted into an excavation in soft marine clay. Field data from this exercise indicate that the strengthening effect of the corner can lead to a significant reduction in wall deflection and ground settlement. Finite-element back-analyses of the excavation also showed that, where corner effects are significant, three-dimensional analysis may be able to offer significantly better predictions of movement than two-dimensional analysis. Comparison with several other excavation projects where corner effects were considered or observed suggests that the significance, or otherwise, of such effects depends on three factors: the length-to-depth ratio of the excavation, the depth to a relatively stiff stratum, and the stiffness of the strutting system.
Source Title: Journal of Geotechnical and Geoenvironmental Engineering
ISSN: 10900241
Appears in Collections:Staff Publications

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