液化流滑变形模型及初步实验

简要分析了地震液化流滑的灾害问题,初步研究了液化不同阶段引起流滑的机制,建立了流滑变形模型,进行了三轴实验和振动台系列实验研究,着重研究了引起液化流滑的微观机制,以及如何通过孔压变化来判定和识别流滑事件.研究发现,影响液化流滑的因素主要有土壤的种类、颗粒级配和土壤赋存条件、均匀程度以及边界条件等,研究结果有助于进一步加深对液化大变形的认识.

Flow-slip deformations induced by seismic liquefaction and preliminary test results

In this paper some disasters of flow-slip induced by seismic liquefaction are studied and summarized ,the reasons of slip in the different stage of liquefaction are analyzed, and six models of slip are set up to describe the deformations of liquefaction. A set of test including dynamical triaxial test and shaking table test are done to observe the slipping,based on the variations of pore-pressure measured in the lab. Some factors which affect the liquefaction deformations are: the kind or sort of soil, the composition of particles and grain size, the deposition status of liquefied stratum,and the boundary conditions.Some points of views are suggested.