| 可液化场地桥梁桩基改进m值法研究 |
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| 引用本文： | 唐亮,凌贤长,苏雷,高霞,李青华.可液化场地桥梁桩基改进m值法研究[J].西北地震学报,2011,33(Z1). |
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| 作者姓名： | 唐亮 凌贤长 苏雷 高霞 李青华 |
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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 |
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| 基金项目： | 国家自然科学基金重大研究计划项目(90815009);国家自然科学基金(50378031,50178027); 西部交通建设科技项目(2009318000100); 教育部留学回国人员科研启动基金 |
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| 摘 要： | 为了合理分析可液化场地桥梁桩基侧向承载力进行了改进m值法的研究。基于振动台试验和m值法,建立了桩-土相互作用体系有限元分析模型;引入反映可液化砂层侧向承载力衰减状态的孔压比指标值Ru;将不同时刻对应墩顶配重惯性力作为体系外部激励施加于墩顶;通过不断试算液化过程中砂土的m值,保证桩的弯矩计算值与试验值吻合较好。建立了考虑孔压比效应的砂土m值衰减因子p与Ru之间关系式。最后,推荐给出可液化场地桥梁桩基侧向承载性能分析的改进m值法。
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| 关 键 词： | 改进m值法 侧向承载性能 桥梁桩基 振动台试验 可液化场地 |
A Modified m-value Method of Bridge Pile Foundation in Liquefiable Ground |
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| TANG Liang,LING Xian-zhang,SU Lei,GAO Xia,LI Qing-hua.A Modified m-value Method of Bridge Pile Foundation in Liquefiable Ground[J].Northwestern Seismological Journal,2011,33(Z1). |
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| Authors: | TANG Liang LING Xian-zhang SU Lei GAO Xia LI Qing-hua |
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| Institution: | TANG Liang,LING Xian-zhang,SU Lei,GAO Xia,LI Qing-hua(School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China) |
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| Abstract: | A modified m-value method is studied,in order to reasonably analyze the lateral bearing capacity of bridge pile foundation in liquefiable ground.The FE analytical model of pile-soil interaction system is established based on shaking table test and the m-value method.The pore pressure ratio indicator is introduced to reflect the attenuation state of the lateral bearing capacity of liquefiable sand;and the inertial force,from the counter weights on the pier at different times,on the top of the pile as the ext... |
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| Keywords: | Modified m-value method Lateral bearing capacity Bridge pile foundation Shaking table test Liquefiable ground |
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