[1]刘亚明,司炳君,何福.单桩-土相互作用非线性数值分析模型[J].防灾科技学院学报,2018,20(02):1-5.
 Liu Yaming,Si Bingjun,He Fu.Nonlinear Numerical Analysis Model for Single Pilesoil Interaction[J].JOURNAL OF INSTITUTE OF DISASTER PREVENTION,2018,20(02):1-5.
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单桩-土相互作用非线性数值分析模型
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《防灾科技学院学报》[ISSN:1673-8047/CN:13-1377/P]

卷:
第20卷
期数:
2018年02期
页码:
1-5
栏目:
目次
出版日期:
2018-06-30

文章信息/Info

Title:
Nonlinear Numerical Analysis Model for Single Pilesoil Interaction
作者:
刘亚明1司炳君1何福2
1.大连理工大学建设工程学部,辽宁大连116024;2.防灾科技学院防灾工程系,河北三河065201
Author(s):
Liu Yaming1 Si Bingjun1 He Fu2
1. Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian 116024, China; 2. Department of Disaster Prevention Engineering, Institute of Disaster Prevention, Sanhe 065201, China
关键词:
桥梁抗震 桩-土相互作用 数值分析 py弹簧单元 OpenSees
Keywords:
seismic design of bridges pilesoil interaction numerical analysis py spring elements OpenSees
分类号:
TU318
文献标志码:
A
摘要:
基于OpenSees数值分析平台,建立了单桩-土非线性数值分析模型。模型中考虑了桩身的非线性以及桩-土之间的非线性力学特性,桩-土之间的非线性水平相互作用通过py弹簧单元来模拟。结合水平荷载作用下桩-土相互作用拟静力试验结果,对模型的准确性进行验证,并对位于不同地下深度处砂土的水平抗力-位移曲线进行对比分析。结果表明:桩顶水平力-位移滞回曲线及骨架曲线数值模拟结果与试验结果均吻合较好,验证了单桩-土非线性数值分析模型的准确性。此外,在地表以下4倍桩径范围内,砂土-桩水平相互作用力学性能表现出明显的非线性特征,6倍桩径以下深度,呈线弹性状态。
Abstract:
Based on the OpenSees numerical analysis platform, we built the nonlinear analysis model for single pilesoil interaction. The nonlinear mechanical behavior of the pile and pilesoil interaction was considered in the model, and py spring elements were used to simulate the soilpile nonlinear horizontal interaction. Combined with quasistatic test results for pilesoil interaction under the action of horizontal load, we verified the accuracy of the model, and compared the hysteretic relations between the soil force and displacement under different pile depth. It is found that the numerical simulated results for the horizontal forcedisplacement hysteretic curves and skeleton curves tally with the experimental results, verifying the accuracy of the nonlinear analysis model for single pilesoil nonlinear numerical analysis model. The horizontal interaction mechanical behavior of the sandpile shows obvious nonlinearity within a pile depth less than 4 times of the pile diameter, while it features linearity with a pile depth more than 6 times of the pile diameter.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2018-03-14 基金项目:国家自然科学基金面上项目(50978042) 作者简介:刘亚明(1992—),男,硕士研究生,从事桥梁抗震研究。 通讯作者:司炳君(1971―),男,博士,教授,主要从事桥梁与结构工程抗震研究。
更新日期/Last Update: 2018-06-30