Design Charts for Double‐Walled Cofferdams
Publication: Journal of Geotechnical Engineering
Volume 119, Issue 2
Abstract
The problems of steady seepage into long double‐walled cofferdams in a pervious stratum of finite depth were presented by King and Cockroft in 1972 for the cases of no excavation and full excavation inside the cofferdam. In 1992, Banerjee and Muleshkov presented the details of the exact solutions of the complete problem, including the special cases for which solutions were developed by King and Cockroft in 1972. These solutions have been derived in terms of elliptic integrals of the first and third kind. The equations depicting the rate of seepage, the distribution of hydraulic heads on the various segments of the domain boundaries, and the exit gradients at the base of the excavation were used to prepare the design charts presented in this paper. An example problem illustrating how these design charts can be used to facilitate computation of the required quantities including seepage rates factors of safety against basal heave, and piping have also been included.
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References
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Banerjee, S., and Muleshkov, A. (1992). “Analytical solutions for steady seepage into double‐walled cofferdams.” J. Engrg. Mech., ASCE, 118(3), 525–539.
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Information & Authors
Information
Published In
Journal of Geotechnical Engineering
Volume 119 • Issue 2 • February 1993
Pages: 214 - 222
Copyright
Copyright © 1993 American Society of Civil Engineers.
History
Received: Jul 15, 1992
Published online: Feb 1, 1993
Published in print: Feb 1993
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