| 地震作用下可液化土的数值模拟与试验验证 |
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| 引用本文： | 吕西林,任红梅,李培振.地震作用下可液化土的数值模拟与试验验证[J].长安大学学报(建筑与环境科学版),2009(4):1-6. |
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| 作者姓名： | 吕西林 任红梅 李培振 |
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| 作者单位： | 同济大学土木工程防灾国家重点实验室,上海200092 |
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| 基金项目： | 基金项目：国家自然科学基金重点项目（90815029）;上海市青年科技启明星计划项目（07QA14054） |
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| 摘 要： | 将有限差分法程序用于可液化土的地震响应分析,采用动力和流体的流固耦合理论分析了振动过程中土体孔隙水压力的产生、扩散与消散,并对液化场地桩-土-结构相互作用体系振动台试验进行了三维数值模拟;通过与振动台试验数据的对比分析,验证了计算模型的可靠性和合理性。结果表明：采用的方法能较好地模拟可液化土的动力特性,所得结论为液化场地土-结构相互作用体系动力分析提供了参考。
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| 关 键 词： | 可液化土 地震响应 数值模拟 孔隙水压力 动力特性 |
Numerical Simulation and Test Verification of Liquefiable Soil Under Seismic Action |
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| LU Xi-lin,REN Hong mei,LI Pei-zhen.Numerical Simulation and Test Verification of Liquefiable Soil Under Seismic Action[J].Journal of Northwestern Institute of Architectural Engineering,2009(4):1-6. |
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| Authors: | LU Xi-lin REN Hong mei LI Pei-zhen |
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| Affiliation: | (State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China) |
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| Abstract: | Finite differential program was employed to analyze the seismic response of liquefiable soil. Fluid-mechanical coupling method was employed to calculate the generation, diffusion and dissipation of pore water pressure in the soil during vibration process; furthermore, 3-D numerical simulations on shaking table tests of pile-soil-superstructure interaction system in liquefaction field were performed. Through comparing with the data of shaking table tests, the reliability and validation of the calculation model were verified. The results show that dynamic characteristics of liquefaction soil can be simulated by using this method. The resea work can provide references for dynamics analysis of soil-structure interaction system liquefaction field. |
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| Keywords: | liquefiable soil seismic response numerical simulation pore water pressure dynamic characteristic |
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