Analysis on Characteristics of Dynamic p-y Curves for Soil-pile Interaction in Liquefiable Ground

张效禹; 唐亮; 凌贤长; 苏雷; 刘春辉; 高霞

doi:10.13409/j.cnki.jdpme.2014.05.034

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Analysis on Characteristics of Dynamic p-y Curves for Soil-pile Interaction in Liquefiable Ground

更新时间：2025-12-11

- Analysis on Characteristics of Dynamic p-y Curves for Soil-pile Interaction in Liquefiable Ground
- Vol. 34, Issue 5, Pages: 619-625(2014)
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- DOI：10.13409/j.cnki.jdpme.2014.05.034
  CLC： 442.55
- Published：2014
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[1]张效禹,唐亮,凌贤长,苏雷,刘春辉,高霞.液化场地桥梁桩—土动力相互作用p-y曲线特性研究[J].防灾减灾工程学报,2014,34(05):619-625.

张效禹, 唐亮, 凌贤长, et al. Analysis on Characteristics of Dynamic p-y Curves for Soil-pile Interaction in Liquefiable Ground[J]. 2014, 34(5): 619-625.
[1]张效禹,唐亮,凌贤长,苏雷,刘春辉,高霞.液化场地桥梁桩—土动力相互作用p-y曲线特性研究[J].防灾减灾工程学报,2014,34(05):619-625. DOI： 10.13409/j.cnki.jdpme.2014.05.034.

张效禹, 唐亮, 凌贤长, et al. Analysis on Characteristics of Dynamic p-y Curves for Soil-pile Interaction in Liquefiable Ground[J]. 2014, 34(5): 619-625. DOI： 10.13409/j.cnki.jdpme.2014.05.034.

摘要

针对液化场地桩—土动力相互作用振动台试验

基于OpenSees有限元数值计算平台

建立了三维有限元数值模型。采用振动台试验结果

验证了数值模型的正确性。基于此数值模型

进行液化场地桩—土动力相互作用p-y曲线特性的参数分析

研究了砂土的渗透系数、内摩擦角和相对密度、上覆粘土层厚度及桩径对曲线的影响效应。研究表明

砂土液化后

动力p-y曲线的滞回圈面积较液化前有明显增大;砂土的渗透系数控制着砂土超孔压的增长趋势;砂土的内摩擦角、相对密度的增大及粘土层厚度的增加使动力p-y曲线滞回圈的面积趋于减小

而桩径的增大使动力p-y曲线滞回圈面积变大。

Abstract

Three-dimensional finite element numerical model for dynamic soil-pile interaction is established based on shaking table test using OpenSees. The validity and effectiveness of the numerical model are verified by the results of shaking table test. The effects of sand permeability

friction angle of sand

relative density of sand

thickness of overlying clay and pile diameter on characteristics of dynamic p-y curves are studied based on the numerical model. The results show that the area of hysteresis loop of dynamic p-y curves increases after soil liquefaction. The change of permeability of sand has great influence on the growth trend of excess pore pressure. The area of hysteresis loop of dynamic p-y curves decreases with the increase of friction angle

relative density of sand and thickness of overlying clay. The area of the hysteresis loop enlarges with the increase of the pile diameter.

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references

液化场地桩-土地震相互作用振动台试验数值模拟 [J]. 唐亮,凌贤长,徐鹏举,苏雷,张效禹,张勇强. 土木工程学报 . 2012(S1)

液化场地桩—土动力相互作用p-y曲线模型研究 [D]. 唐亮. 哈尔滨工业大学 2010

液化土层中桩基横向动力响应研究 [D]. 李雨润. 中国地震局工程力学研究所 2006

Piles in liquefiable soils: seismic analysis and design issues [J] . W.D.L Finn,N Fujita. Soil Dynamics and Earthquake Engineering . 2002 (9)

Computational modeling of cyclic mobility and post-liquefaction site response [J] . Ahmed Elgamal,Zhaohui Yang,Ender Parra. Soil Dynamics and Earthquake Engineering . 2002 (4)

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Journal of Disaster Prevention and Mitigation Engineering Vol.34 2014 CONTENTS

Simplified Method for Seismic Analysis of Bridge Pile Group Foundation in Liquefiable Soils

Comparative Experimental Study on Dynamic Response of Straight Inclined Piles under Variable Frequency Regular Wave Input

Numerical Simulation of Shake-table Experiment on Dynamic Response of Pile Foundation in Liquefaction-induced Lateral Spreading Ground

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