Experimental Research On Liquefaction Of Sands In Liaoxi Aeolian Area

This article analyzes factors influencing the anti-liquefaction strength of aeolian sandy soil such as consolidation ratio, confining pressure, density and fine-grained content by using the Western Liaoning aeolian sand as the study objective, through the DDS-70 dynamic triaxial apparatus carried out experimental study on seismic liquefaction for the aeolian sand. According to dynamic triaxial test results, this paper discusses the impact of sand dynamic pore pressure development model through the different content on dry density and fine-grained. In the case of pressure equalizing and consolidation, dynamic pore pressure development model is consistent with the curve shape that H.B.Seed, Zhang Jianmin and Xie dingyi suggested. In the case of pressure bias and consolidation, dynamic pore pressure development model can be simulate by hyperbolic model. Experimental results show that the density, fine-grained content and so on will have a certain influence on the role of pore pressure increase.This paper also simulates the dynamic analysis of railway moving load by ANSYS and then analyze the dynamic interaction characteristics of roads and foundation under moving loads, studied the deformation characteristics of the roads under moving loads.The results showed that the dynamic deformation and dynamic stress of the surface of the base-bed show an increasing trend. Dynamic displacement of the lower surface of the base bed also show an increasing trend, but it has little effect.