Predicting Wall Displacements for Excavations with Cross Walls in Soft Clay
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 139, Issue 6
Abstract
Cross walls are commonly used in some Asian countries like Japan and Taiwan for constraining the excavation-induced ground settlements as well as mitigating the subsequent building damages. To quantify the effect of cross walls, 22 case histories, including 11 excavations with cross walls and 11 excavations without cross walls, are collected in this study. It is found that cross walls can effectively reduce ground settlements by minimizing wall displacements—the maximum wall displacements for cases with cross walls are within , compared with those for cases without cross walls being within . Case histories show that the spacing of cross walls has a major effect on wall displacements. A physical model is proposed to predict the system stiffness in the presence of cross walls. Based on the data points in the collected case histories and the proposed stiffness model, a regression model that is capable of predicting maximum wall displacements is further developed. This model is applicable to cases with or without cross walls and is found to perform reasonably well over independent validation case histories.
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Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 139 • Issue 6 • June 2013
Pages: 914 - 927
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jan 31, 2012
Accepted: Aug 27, 2012
Published online: Aug 31, 2012
Published in print: Jun 1, 2013
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