抗滑桩土坡流变渗流特性及破坏机理研究

项目名称： 抗滑桩土坡流变渗流特性及破坏机理研究

项目编号： No.40872179

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 许建聪

作者单位： 同济大学

项目金额： 37万元

中文摘要： 选择具有完整变形破坏资料的抗滑桩土坡作为重点研究对象，通过现场地质调查、测试与监测和模型试验，对抗滑桩土坡的地下水渗流和土体流变特性在边坡变形破坏过程中的作用方式及变化规律，开展了系统深入的研究工作，揭示了抗滑桩土坡变形破坏过程中土体流变和地下水渗流的作用方式与变化特征、桩土的相互作用方式及变化规律，阐明了抗滑桩土坡失稳破坏的内在机理，提出了考虑土体流变、地下水和桩土相互作用下抗滑桩土坡稳定性的评价方法。研究成果将为把握抗滑桩土坡变形破坏过程、合理评价边坡稳定性、正确判断其成灾可能性奠定理论基础。随着复杂地质山岭地区工程建设规模的不断扩大，特别是高等级公路、铁路建设速度的加快，此类型滑坡灾害问题的严重性也在增大。因此，本项目抗滑桩土坡的流变、渗流特性及破坏机理研究的成果，对合理制定抗滑桩土坡失稳破坏的防治方法体系，有着重要的现实意义。

中文关键词： 抗滑桩土坡；流变；地下渗流；破坏机理；物理与数值模拟

英文摘要： Selecting the anti-sliding pile soil slope(APSS) with the complete data of its deformation and failure as the important research object, using the field geological investigation, in-situ test and monitoring, and physical model test, it is systematically and deeply studied how the characteristic of groundwater seepage and soil rheological act and change in the deformation and failure process of APSS. The results were obtained as follows: (1) the action mode and variation feature of soil rheological behavior and groundwater seepage, and soil-pile interaction and its variation were revealed in the deformation and failure process of APSS; (2) the instability and failure mechanisms of APSS was explained; (3) it was raised for the stability evaluation methods of APSS to consider the rheological behavior of soil, groundwater seepage, and soil-pile interaction. The results will establish the theoretic basis for better understanding the deformation and failure process of APSS, evaluating appropriately the slope stability, and accurately judging its disaster probability. As the scale of construction increases in the mountainous terrain of complicated geology, especially the construction of high-grade highways and railway speeds up, the severity of this landslide disaster also increases. The results of study on the characteristic of soil rheological and groundwater seepage and the failure mechanisms of APSS has the important practical significance for establishing a reasonable methodological system of preventing and controlling the instability and failure of APSS.

英文关键词： anti-sliding pile soil slope; reheology; groundwater seepage; failure mechanism; physical and numerical modeling