Study On Engineering Dynamic Properties Of Xigeda Soil In Panxi Area

Xigeda soil widely exists in Panzhihua-Xichang area of Sichuan province. Because it often forms numerous landslides for it's apt to intenerate and become mud when meeting water and there is a big rupture alone Anning river in Panzhihua-Xichang area, we should investigate it's characteristic in engineering and dynamic through experiment.On the base of pre-production, tests of dynamic modulus ,damping ratio and dynamic intensity of Xigeda soil through the cyclic triaxial instrument. Dynamic intensity and seismic parameters are ensured and some affecting factors are discussed.Among many factors affecting the resisting fluidify characteristic of the soil., soil character, initial stress and dynamic load are the primary. Mainly seeing about the factors affecting the resisting fluidify characteristic such as confining stress, controlling dry density and saturation in this paper. Cyclic stress" τ d" increases while confining stress" σ3c" increasing. Cyclic stress ratio"R@" increase while controlling dry density increasing and decreases while saturation increasingMore than 10 factors affect the dynamic modulus and damping ratio Dynamic strain level can make dynamic modulus and damping ratio multiple. Confining stress has much effect on dynamic modulus and damping ratio. Dynamic modulus increases while confining stress increasing and damping ratio decreases while confining stress increasing. Dynamic modulus increases while controlling dry density or saturation increasing and damping ratio decreases little while controlling dry density or saturation increasing.