Analysis of Non-linear Dynamic Parameters of the Cohesive Soil in the Xiong'an New District
Based on the dynamic triaxial test results of the cohesive soil from the Regional Earthquake Safety Evaluation Project in the starting area of the Xiong'an New District,the dynamic shear modulus and damping ratio data of 199 groups of cohesive soils were sorted and analyzed.The burial depth interval was 10 m,and the average values of dynamic shear modulus ratio and damping ratio with shear strain in different burial depth intervals of the cohesive soil in Xiong'an New District are given,and the variability and dispersion of nonlinear dynamic parameters with burial depth are given too.The results show that compared with the results in other regions,the nonlinear dynamic parameters of the cohesive soil in the Xiong'an New District are in line with the basic understanding of soil dynam-ics;the dynamic shear modulus of the cohesive soil in the Xiong'an New District is slightly higher than that in the Tianjin area,and tends to the upper limit value of the whole country with the increase of burial depth,while the damping ratio is obviously lower than the recommended average value in Tianjin and the average value of the whole country at the shallow surface and,with the increase of burial depth,approaches to the upper-limit value of the whole country.The obtained statistical results basically reflect the nonlinear dynamic characteristics of the clayey soil in the Xiong'an New District,and can provide scientific basis for the determination of the design ground motion parameters in the Xiong'an New District.
the Xiong'an New Districtcohesive soildynamic shear modulus ratiodamping ratio
万方数据
维普
