Trench Stability under Bentonite Pressure in Purely Cohesive Clay

Autor:	Horn-Da Lin, R. S. Merifield, Andrei V. Lyamin, A.J. Li
Rok vydání:	2014
Předmět:	Slurry wall Safety factor Limit analysis Lateral earth pressure Slope stability Trench Soil Science Geotechnical engineering Limit (mathematics) Upper and lower bounds Geology Physics::Geophysics
Zdroj:	International Journal of Geomechanics. 14:151-157
ISSN:	1943-5622 1532-3641
DOI:	10.1061/(asce)gm.1943-5622.0000292
Popis:	Trench stability is a conventional geotechnical problem; however, current evaluations are often based entirely on empiricism. This paper uses numerical finite-element upper and lower bound limit analysis to produce stability charts for two-dimensional and three-dimensional homogeneous and inhomogeneous undrained diaphragm wall trenches. Using the limit theorems cannot only provide a simple and useful way of analyzing the stability of the trench, but also avoid the shortcomings and arbitrary assumptions underpinning the limit equilibrium method. By considering the effects from the bentonite slurry pressures, the collapse load in this study has been bracketed to within ±8.5% or better by the numerical upper and lower bound limit analyses. The chart solutions can be used to predict either the critical depth or the safety factor of the trench and provide a convenient tool for preliminary designs by practicing engineers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d6c192a4c38fbc601a61f7d0069d95ea https://doi.org/10.1061/(asce)gm.1943-5622.0000292 Zobrazit plný text záznamu Plný text ve formátu PDF