Author:
Keawsawasvong Suraparb,Kumar Jyant,Banyong Rungkhun,Sangjinda Kongtawan
Abstract
Background:
This study presents a numerical solution for determining the limiting uniform normal pressure acting horizontally behind cohesive-frictional backfill material in a deep contiguous piled wall. At this limiting pressure, the soil tends to flow out in gaps between a series of vertical piles placed at a certain uniform horizontal spacing.
Methods:
The lower and upper bound plane strain finite element limit analysis (FELA) has been carried out for this purpose. The Mohr-Coulomb failure criterion, using an associated flow rule, was employed to impose the yield condition in the soil mass.
Results:
A parametric study was carried out to obtain the magnitude of the non-dimensional limiting lateral resistance (F/cD) as a function of normalized pile spacing (S/D), the friction angle of soils (ϕ), and the adhesion factor (δ) at the soil-pile interface; here, F refers to the lateral normal resistance (force) per unit length offered by the pile, S forms the clear spacing between piles, D is the diameter of the pile and c is soil cohesion. The impact of the different parameters on the failure mechanisms has been examined comprehensively.
Conclusion:
The lateral resistance (F/cD) offered by the piles increases generally with a decrease in the spacing between the piles. The magnitude of F/cD increases further with an increase in the values of ϕ and δ.
Publisher
Bentham Science Publishers Ltd.
Subject
Civil and Structural Engineering
Reference42 articles.
1. North-Lewis JP, Lyons GHA.
Contiguous bored piles
1975.
2. Moh ZC, Chin CT.
Deep excavation in soft ground.
Proceedings of ASIA Construction
New Frontiers, Singapore. 1991.
1991.
3. Gaba AR, Simpson B, Powrie W, Beadman DR.
Embedded retaining walls guidance for economic design
2003.
4. Ou CY.
Deep Excavation: Theory and Practice
2006.
5. Huynh QT, Lai VQ, Shiau J, Keawsawasvong S, Mase LZ, Tra HT.
On the use of both diaphragm and secant pile walls for a basement upgrade project in Vietnam.
Innov Infrastruc Solu
2022;
7
(1)
: 17.
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献