The Study Of Dynamic Characteristics Of The Sloped Soil After Earthquake In Oinghai Yushu

In recent years, earthquakes occurred frequently both at home and abroad, there are many slope earthquake disaster, causing heavy economic losses. But because the impact of the earthquake damage under different slope and natural slope failure, the slope disease is particularly important after treatment; and to study the dynamic characteristics of the slope soil is the foundation of governance after the earthquake. The dynamic characteristics of soil slope in Qinghai Yushu area, this paper mainly for the following research:First, a brief summary of the existing soil dynamic results cannot correctly predict the dynamic characteristics of soil slope in Qinghai Yushu area, according to the experimental study and puts forward the scheme of test on the Qinghai Yushu earthquake slope. Secondly, through indoor routine tests measured slope soil density, moisture content, particle composition, pore ratio and other related physical parameters after Yushu earthquake; through indoor dynamic triaxial test of three, confining pressure and water content effect on the dynamic strength of small grain soil samples; and through the GDS test, studied in the soil containing large particles under the condition, void ratio, moisture content, confining pressure on the dynamic strength. According to the experimental results, the analysis of the dynamic strength and confining pressure, moisture content, void ratio between trend, dynamic friction angle of soil, dynamic cohesion dynamic parameters and curve of dynamic strength and dynamic strain was obtained. The experimental results indicated that in certain water content, increase of confining pressure can improve soil dynamic strength; void ratio (soil compaction), the ability of soil to resist dynamic load damage is stronger. Finally, according to the research results at home and abroad about the dynamic constitutive model theory, established for the Yushu area soil constitutive model, in order to provide the necessary theoretical basis for the protection and treatment of slope engineering in Qinghai Yushu area.