滩涂匡围区地基土体地震液化分析
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摘要
运用FLAC3D软件,通过应力场和渗流场的耦合分析,模拟了条子泥滩涂围区南排水闸地基土在动力作用下的孔压积累直至土体液化的全过程.研究进一步证实了在地震作用下,土体孔隙水压力上升,有效应力下降,导致土体的液化的基本规律.结果表明:根据该地区的地震烈度,在地震作用下深层土体并不会发生液化,采取适量必要的加固措施即可.研究方法和成果可以为类似工程提供技术支持.
Through dynamic-seepage coupling analysis,in south drainage gate of Tiaozini tidal flat reclamation area,the whole process of foundation soils pore pressure accumulaing to liquefaction under dynamic action is simulated by using FLAC3D.The study further confirms the basic law that under seismic action,the increase of pore water pressure of soil and effective stress decrease,are the causes of soil liquefaction.The results show that,based on seismic intensity of the area,deep-seated soil don't liquefy during earthquake;the right amount of necessary reinforcement measures is enough.The research methods and achievements can provide better technical support and security for similar projects.
引文
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