Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4457
Title: Design of a rigid cutoff wall
Authors: Singh A.K.
Mishra G.C.
Samadhiya, Narendra Kumar
Ojha, C. S. P.
Published in: International Journal of Geomechanics
Abstract: A sheet pile cutoff wall simply called cutoff wall is used in almost all types of water retaining structures to reduce the exit gradient at the downstream toe and prevent the chances of sand boiling and piping. In 1954, Terzaghi has suggested a simplified approach for the design of cutoff walls considering average seepage force. In Terzaghi's approach, the unbalanced water pressure around the cutoff wall is coupled with the active earth pressure and the resultant thrust is determined by subtracting the passive thrust from the combined active thrust. The value of passive earth pressure coefficient has been assumed to correspond with a downstream failure wedge having an angle of (45°-?1/2) with the horizontal, where ?1=effective angle of internal friction of the foundation soil. In this paper, it is shown that under steady state flow conditions for a flexible levee base, failure does not take place always at this angle. Considering exact seepage forces and applying the laws of equilibrium, active and passive earth pressures acting on a rigid sheet pile cutoff wall on an impervious levee have been determined. The weight of the levee has been considered in the computation of active thrust. The design procedure of a rigid cutoff wall is also explained. There is a difference of approximately 10% between the passive thrusts for a rigid cutoff wall of normal length computed by Terzaghi's method and by the rigorous method presented herein. © 2006 ASCE.
Citation: International Journal of Geomechanics(2006), 6(4): 215-225
URI: https://doi.org/10.1061/(ASCE)1532-3641(2006)6:4(215)
http://repository.iitr.ac.in/handle/123456789/4457
Issue Date: 2006
Keywords: Core walls
Earth pressure
Pipes
Sand
Seepage
ISSN: 15323641
Author Scopus IDs: 57209902591
35350837800
6506534111
7004206177
Author Affiliations: Singh, A.K., Dept. of Civil Engineering, Indian Institute of Technology, Roorkee-247667, India
Mishra, G.C., WRDM, Indian Institute of Technology, Roorkee-247667, India
Samadhiya, N.K., Dept. of Civil Engineering, Indian Institute of Technology, Roorkee-247667, India
Ojha, C.S.P., Dept. of Civil Engineering, Indian Institute of Technology, Roorkee-247667, India
Corresponding Author: Singh, A.K.; Dept. of Civil Engineering, Indian Institute of Technology, Roorkee-247667, India; email: aksnitjsr@rediffmail.com
Appears in Collections:Journal Publications [CE]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.