000009692 001__ 9692
000009692 005__ 20141205153144.0
000009692 04107 $$aeng
000009692 046__ $$k2008-10-12
000009692 100__ $$aChen, Hongjuan
000009692 24500 $$aVariability of Nonlinear Dynamic Shear Modulus and Damping Ratio of Soils

000009692 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009692 260__ $$b
000009692 506__ $$arestricted
000009692 520__ $$2eng$$aThe dynamic shear modulus and damping ratio of soils are two important parameters in soil property and affect earthquake ground motion greatly. The laboratory experimental results at present show a significant variation because of the soil complication. Studying the uncertainty of the dynamic shear modulus and damping ratio is quite helpful for understanding the nonlinear behavior of soils. Also, the quantitative results of the variability are one of basic elements of the reliability analysis for the ground motion and structure damage. However, the related research at present mostly concentrates on the static problem and the study on dynamics parameters especially nonlinear uncertainty problem is rare. In this paper, the uncertainty of the nonlinear dynamic shear modulus and damping ratio is investigated and the quantitative results for five typical soils are presented. The original experiment data of dynamic shear modulus and damping ratio of 588 groups from 17 provinces, 42 cities in China are collected. The standard relation of dynamic shear modulus and damping ratio with the shear strain, i.e., G/Gmax-γ and λ-γ, fitted by the hyperbolic model are attained. For the eight typical shear strain points in the nonlinear scope, the uncertainty of dynamic shear modulus and damping ratio is conducted. The distribution characteristics of the dynamic shear modulus and damping ratio for the eight typical shear strain points is given, separately, and the normal distribution is verified by two methods. Based on these, the reference value range of 95% probability, the maximum value, the minimum value, the mean value, the standard deviation and the coefficient variation are presented finally.

000009692 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009692 653__ $$aSoils, Nonlinear, Dynamic Shear Modulus, Damping Ratio, Variability, Uncertainty

000009692 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009692 720__ $$aChen, Hongjuan$$iSun, Rui$$iYuan, Xiaoming$$iZhang, Jianyi
000009692 8560_ $$ffischerc@itam.cas.cz
000009692 8564_ $$s632024$$uhttps://invenio.itam.cas.cz/record/9692/files/04-01-0123.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-01-0123.
000009692 962__ $$r9324
000009692 980__ $$aPAPER