| 液化场地桥梁足尺桩抗震简化分析方法 |
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| 引用本文： | 张效禹,唐亮,凌贤长,李惠.液化场地桥梁足尺桩抗震简化分析方法[J].西北地震学报,2015,37(4):944-951. |
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| 作者姓名： | 张效禹 唐亮 凌贤长 李惠 |
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| 作者单位： | 哈尔滨工业大学土木工程学院, 黑龙江哈尔滨 150090;结构工程灾变与控制教育部重点实验室哈尔滨工业大学, 黑龙江哈尔滨 150090;哈尔滨工业大学土木工程学院, 黑龙江哈尔滨 150090;结构工程灾变与控制教育部重点实验室哈尔滨工业大学, 黑龙江哈尔滨 150090;地质灾害防治与地质环境保护国家重点实验室成都理工大学, 四川成都 610059;哈尔滨工业大学土木工程学院, 黑龙江哈尔滨 150090;结构工程灾变与控制教育部重点实验室哈尔滨工业大学, 黑龙江哈尔滨 150090;哈尔滨工业大学土木工程学院, 黑龙江哈尔滨 150090;结构工程灾变与控制教育部重点实验室哈尔滨工业大学, 黑龙江哈尔滨 150090 |
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| 基金项目： | 国家自然基金项目(51578195,51378161);黑龙江省应用技术研究与开发项目(GZ13A009);国家重点基础研究发展973计划项目(2012CB026104);地质灾害防治与地质环境保护国家重点实验室项目(SKLGP2013K011) |
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| 摘 要： | 采用国际VELACS项目中离心机试验标定的内华达砂的动力计算参数,建立液化场地足尺桩-土动力相互作用分析的三维有限元模型;获得不同幅值的正弦波作用下桩-土动力相互作用的p-y曲线,修正并发展一种可用于液化场地桩-土动力相互作用分析的宏单元模型,并基于非线性文克尔地基梁模型建立桥梁足尺桩抗震分析的数值模型与简化方法,通过有限元分析结果验证该简化方法的正确性。
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| 关 键 词： | 宏单元模型 简化方法 足尺桩-土动力相互作用 非线性有限元分析 液化场地 |
| 收稿时间： | 2014/8/20 0:00:00 |
Simplified Seismic Analysis Method for Bridge Full-scale Piles in Liquefied Ground |
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| ZHANG Xiao-yu,TANG Liang,LING Xian-zhang and LI Hui.Simplified Seismic Analysis Method for Bridge Full-scale Piles in Liquefied Ground[J].Northwestern Seismological Journal,2015,37(4):944-951. |
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| Authors: | ZHANG Xiao-yu TANG Liang LING Xian-zhang and LI Hui |
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| Institution: | School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China;Key Laboratory of Structures Dynamic Behavior and Control, Ministry of Education, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China;School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China;Key Laboratory of Structures Dynamic Behavior and Control, Ministry of Education, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China;State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, Sichuan, China;School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China;Key Laboratory of Structures Dynamic Behavior and Control, Ministry of Education, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China;School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China;Key Laboratory of Structures Dynamic Behavior and Control, Ministry of Education, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China |
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| Abstract: | Most research in the seismic analysis of pile foundations in liquefied ground is based on small-scale model testing and theoretical analysis. This paper presents the development of a three-dimensional finite element model for dynamic pile-soil interaction using the dynamic calculation parameters of Nevada sand calibrated by conducting the centrifuge test outlined in the Verification of Liquefaction Analysis by Centrifuge Studies(VELACS) project.On the basis of this numerical model, the dynamic p-y curves under various shaking amplitudes are studied, and a macro-element model for analysis of dynamic pile-soil interaction in liquefied ground is developed. In addition, a simplified method for seismic analysis of the piles on the basis of the Winkler model is presented and verified by the results of numerical simulation. |
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| Keywords: | macro-element model simplified method dynamic full-scale pile-soil interaction nonlinear finite element analysis liquefied ground |
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