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ARTÍCULO
TITULO

Effect of Relative Stiffness of Pile and Soil on Pile Group Effect

Bo Liu    
Xiaomin Wang    
Chunhui Liu and Jingchang Kong    

Resumen

Pile groups are designed to sustain complex loads in various engineering. During the design of a pile group, the obvious pile group effect should be considered for closely spaced pile groups. However, the group effect considered by different scholars varies, which makes it hard for engineers to consider the pile group effect for the design of a pile group. In this study, the finite element (FE) method is proposed to advance our understanding of the variations of pile group effects developed by different researchers, based on the concept of soil?pile relative stiffness. The relationship between soil?pile relative stiffness and normalized lateral load?displacement curves and bending moment profile response of the pile group is investigated. The results show that the pile group effect increases with the increase in soil?pile relative stiffness; the pile group effect increases with the decrease in pile spacing, increases with the increase in of number of piles in the group, and is significantly affected by pile group arrangement as well.

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