Evaluation of a Dike Damaged by Pile Driving in Soft Clay
Publication: Journal of Performance of Constructed Facilities
Volume 19, Issue 4
Abstract
This paper presents a case study detailing a riverbank dike damaged by pile driving in very soft clay in Shanghai, P. R. China. Driven piles were designed to support the existing dike to be raised to a higher elevation. The subsoil mainly consisted of very soft clay with its natural moisture content greater than its liquid limit. This paper describes the phenomena of dike movement and crack development during pile driving based on field observations and instrumentation data. Cone penetration tests and vane shear tests were conducted after pile driving to investigate the slip surfaces. Degradation of soil strength was identified as the main cause for the failure of this dike. Slope stability analysis was conducted to back-calculate the degraded undrained shear strength of the clay. The results indicate that the soil strength in the disturbed area due to pile driving approached the level of its remolded strength.
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Information & Authors
Information
Published In
Journal of Performance of Constructed Facilities
Volume 19 • Issue 4 • November 2005
Pages: 300 - 307
Copyright
© 2005 ASCE.
History
Received: Feb 10, 2004
Accepted: Aug 4, 2004
Published online: Nov 1, 2005
Published in print: Nov 2005
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