Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31238
Title: Evaluation of interslice force function and discussion on convergence in slope stability analysis by the lower bound method
Authors: Cheng, YM 
Zhao, ZH
Sun, YJ
Keywords: Convergence
Factor of safety
Global maximum
Interslice force function
Lower bound theorem
Slope stability analysis
Issue Date: 2010
Publisher: American Society of Civil Engineers
Source: Journal of geotechnical and geoenvironmental engineering, 2010, v. 136, no. 8, 002008qgt, p. 1103-1113 How to cite?
Journal: Journal of geotechnical and geoenvironmental engineering 
Abstract: The interslice force function f(x) is a major assumption of the limit equilibrium method, which is important but has not been adequately considered in the past. In this paper, f(x) is taken as the control variable, and the upper and lower limits of the factor of safety for a general slope will be determined by a global optimization analysis. Based on this approach, f(x) will be determined and investigated. We demonstrate that f(x) cannot be arbitrarily assigned if a set of acceptable internal forces is required. The present approach can be presented practically as a lower bound approach with the advantage that failure to converge is virtually eliminated, which is not possible with all other existing "rigorous" methods. The "present proposal" attempts to answer several important questions in the basic theory of slope stability analysis, and provides a f(x) based on the lower bound approach statically admissible forces throughout the whole failure zone. Currently, different assumptions will give different factors of safety to the same problem, and this situation will be overcome by the use of the present proposal. The present proposal is also proven to give a result equal to the slip line solution for a simple footing on clay which is not possible for other classical slope stability methods, which has demonstrated that the applicability of the "present proposal" for general difficult problems.
URI: http://hdl.handle.net/10397/31238
ISSN: 1090-0241
EISSN: 1943-5606
DOI: 10.1061/(ASCE)GT.1943-5606.0000317
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

11
Last Week
0
Last month
0
Citations as of Aug 14, 2017

WEB OF SCIENCETM
Citations

10
Last Week
0
Last month
0
Citations as of Aug 13, 2017

Page view(s)

46
Last Week
3
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



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