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

刘春辉; 唐亮; 凌贤长; 苏雷; 高霞; 张效禹; 林基聪

doi:10.13409/j.cnki.jdpme.2014.05.025

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

更新时间：2025-12-11

- Simplified Method for Seismic Analysis of Bridge Pile Group Foundation in Liquefiable Soils
- Vol. 34, Issue 5, Pages: 566-570(2014)
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- DOI：10.13409/j.cnki.jdpme.2014.05.025
  CLC： 443.15;U442.55
- Published：2014
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[1]刘春辉,唐亮,凌贤长,苏雷,高霞,张效禹,林基聪.液化场地桥梁群桩基抗震分析简化方法[J].防灾减灾工程学报,2014,34(05):566-570.

刘春辉, 唐亮, 凌贤长, et al. Simplified Method for Seismic Analysis of Bridge Pile Group Foundation in Liquefiable Soils[J]. 2014, 34(5): 566-570.
[1]刘春辉,唐亮,凌贤长,苏雷,高霞,张效禹,林基聪.液化场地桥梁群桩基抗震分析简化方法[J].防灾减灾工程学报,2014,34(05):566-570. DOI： 10.13409/j.cnki.jdpme.2014.05.025.

刘春辉, 唐亮, 凌贤长, et al. Simplified Method for Seismic Analysis of Bridge Pile Group Foundation in Liquefiable Soils[J]. 2014, 34(5): 566-570. DOI： 10.13409/j.cnki.jdpme.2014.05.025.

摘要

基于已完成的液化场地土—桩—桥梁结构地震相互作用振动台试验

利用两步法、等效单桩法

建立了液化场地群桩基础抗震分析的动力非线性文克尔地基梁模型。该模型考虑了桩—土相互作用的影响。首先

按照等刚度原则将群桩简化为等效单桩;其次

选用弹簧元件和阻尼原件并联的宏单元模拟桩—土动力相互作用;然后

计算地震作用下自由场地的土体位移和孔压比;最后

将地震作用下自由场地土体位移和孔压比作为模型的外部激励

计算桩的动力反应规律。将简化方法计算结果与液化场地桥梁桩基振动台试验结果进行对比发现

两者吻合较好

验证了简化方法的正确性。

Abstract

The nonlinear Beam-on-Winkler Foundation model was developed based on shaking table test

utilizing the two-step method

equivalent single pile method and Nonlinear Beam-on-Winkle-Foundation method. The effect of soil-pile interaction was considered in this model. First

the pile group foundation was simplified to an equivalent single pile according to stiffness equivalence theory. Secondly

soil-pile interaction was modeled by macroelement which was composed of paralleled spring and damper components. Thirdly

the soil displacement and pore water pressure ratio of free field under seismic load were calculated. Finally

the displacement of the free field and the pore pressure ratio during the earthquake were conducted as the boundary condition of nonlinear Beam-on-Winkle-Foundation. This simplified method was implemented in the FE software and verified by the results obtained from the shaking table tests.

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references

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

GB 50111-2009. 铁路工程抗震设计规范 [S]. 2006

Simplified BEM/FEM model for dynamic analysis of structures on piles and pile groups in viscoelastic and poroelastic soils [J] . M.A. Millán,J. Domínguez. Engineering Analysis with Boundary Elements . 2008 (1)

Nonlinear analysis for dynamic lateral pile response [J] . M.H. El Naggar,M. Novak. Soil Dynamics and Earthquake Engineering . 1996 (4)

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

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

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

Influence of Vibration Intensity on Dynamic Response of Rock Slope

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