Arid
DOI10.1007/s11440-022-01647-w
Load-deflection analysis of laterally loaded piles in unsaturated soils
Ghazavi, Mahmoud; Mahmoodi, Elmira; El Naggar, Hesham
通讯作者El Naggar, H
来源期刊ACTA GEOTECHNICA
ISSN1861-1125
EISSN1861-1133
出版年2023
卷号18期号:4页码:2217-2238
英文摘要The lateral response of piles is governed by the soil-pile interaction in the shallower layer of surrounding soil, which may be above the water level and thus is unsaturated. There is no comprehensive analytical model for the soil-pile interaction under lateral loads considering both linear and nonlinear behaviors in unsaturated soils. In this study, an analytical solution is proposed to simulate the linear and nonlinear load-displacement variations for laterally loaded piles supported by unsaturated soils. Analytical formulations are developed to determine the stiffness per unit pile length considering the influence of soil suction on the soil modulus of elasticity. Since the current p-y curves available in the literature are unable to adequately address the unsaturated soil reaction to piles, analytical p-y relations for three types of soil are developed regarding the soil suction parameter. In order to expand the scope of application of presented method, the developed solution is extended to step-tapered piles and to piles subjected to simultaneous horizontal and vertical loads. The developed solutions are validated with the results obtained from laterally loaded pile tests reported in the literature. Parametric studies evaluated the effects of pile length and cross-section configuration and applied vertical load on the pile lateral response under various soil unsaturation conditions. The results revealed that the stiffness of the pile-soil system and its load-deformation behavior are improved significantly as the soil suction pressure increases. Furthermore, the lateral pile displacement in unsaturated soil decreases as the pile length and diameter of the upper pile portion increase, and by considering the applied vertical load. Considering the positive effect of soil suction on reducing the lateral response of piles in unsaturated soil (in arid areas) in design may help shorten the pile length or reduce its diameter while achieving a desired force-deflection demand.
英文关键词p-y curve Pile lateral deflection Soil-pile lateral stiffness Unsaturated soil
类型Article
语种英语
收录类别SCI-E
WOS记录号WOS:000879144100001
WOS关键词SINGLE PILES ; TAPERED PILES ; VERTICAL LOAD ; BEHAVIOR ; CURVE ; MODEL
WOS类目Engineering, Geological
WOS研究方向Engineering
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/394958
推荐引用方式
GB/T 7714
Ghazavi, Mahmoud,Mahmoodi, Elmira,El Naggar, Hesham. Load-deflection analysis of laterally loaded piles in unsaturated soils[J],2023,18(4):2217-2238.
APA Ghazavi, Mahmoud,Mahmoodi, Elmira,&El Naggar, Hesham.(2023).Load-deflection analysis of laterally loaded piles in unsaturated soils.ACTA GEOTECHNICA,18(4),2217-2238.
MLA Ghazavi, Mahmoud,et al."Load-deflection analysis of laterally loaded piles in unsaturated soils".ACTA GEOTECHNICA 18.4(2023):2217-2238.
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