Experimental investigations on the behaviour of pile groups in clay under lateral cyclic loading

被引：28

作者：

Chandrasekaran S.S. ^{[1
]}

Boominathan A. ^{[2
]}

Dodagoudar G.R. ^{[2
]}

机构：

[1] Department of Civil Engineering, Bannari Amman Institute of Technology, Sathyamangalam

[2] Department of Civil Engineering, Indian Institute of Technology Madras, Chennai

来源：

Geotechnical and Geological Engineering | 2010年 / 28卷 / 5期

关键词：

Cyclic efficiency; Cyclic p-multipliers; Lateral load; p-y Curve; Pile group; Soft clay;

D O I：

10.1007/s10706-010-9318-4

中图分类号：

学科分类号：

摘要：

This paper presents the results of two-way cyclic lateral load tests carried out on model pile groups embedded in soft marine clay. The tests are conducted on 1 × 2, 2 × 2 and 3 × 3 pile groups having length to diameter ratio (L/D) of 15, 30 and 40 with the spacing to diameter ratio (S/D) of 3, 5, 7 and 9. The experimental results are presented in the form of load-deflection curves and bending moment profiles. Cyclic group efficiency, critical spacing, critical cyclic load level and cyclic p-multipliers are evaluated. It is found that the lateral capacity of the 3 × 3 group reduces by about 42% after 50 cycles of loading. The cyclic p-multipliers of 3 × 3 pile group are found to be 0.41, 0.25 and 0.29 for leading, intermediate and rear rows respectively. The test results are compared with the numerical analysis carried out by p-y method using GROUP program. The analysis carried out with experimentally evaluated p-multipliers predicts load-deflection and bending profiles of pile groups reasonably well, but underestimates the depth to maximum bending moment by about 15%. © 2010 Springer Science+Business Media B.V.

引用

页码：603 / 617

页数：14

共 23 条

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