A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A unified model for estimating the in-situ small strain shear modulus of clays, silts, sands, and gravels
Abstract This paper proposes a unified model to estimate the in-situ small strain shear modulus of clays, silts, sands, and gravels based on commonly available index properties of soils. We developed a model to predict the laboratory small strain shear modulus (G max,lab) using a mixed effects regression of a database that contains 1680 tests on 331 different soils. The proposed model includes the effect of void ratio, effective confining stress and overconsolidation ratio as well as plasticity index, fines content, and coefficient of uniformity. We compiled a second database to estimate the in-situ small strain shear modulus (G max,in-situ) from laboratory (G max,lab) measurements. This study validated and compared the resulting model with other existing models using a third database of measured G max,in-situ values. The residuals of the proposed model had a mean and median closer to zero and the smallest standard deviation of all the models considered. By including a statistical description of the residuals, this work allows uncertainty of the small strain shear modulus to be included in probabilistic studies.
A unified model for estimating the in-situ small strain shear modulus of clays, silts, sands, and gravels
Abstract This paper proposes a unified model to estimate the in-situ small strain shear modulus of clays, silts, sands, and gravels based on commonly available index properties of soils. We developed a model to predict the laboratory small strain shear modulus (G max,lab) using a mixed effects regression of a database that contains 1680 tests on 331 different soils. The proposed model includes the effect of void ratio, effective confining stress and overconsolidation ratio as well as plasticity index, fines content, and coefficient of uniformity. We compiled a second database to estimate the in-situ small strain shear modulus (G max,in-situ) from laboratory (G max,lab) measurements. This study validated and compared the resulting model with other existing models using a third database of measured G max,in-situ values. The residuals of the proposed model had a mean and median closer to zero and the smallest standard deviation of all the models considered. By including a statistical description of the residuals, this work allows uncertainty of the small strain shear modulus to be included in probabilistic studies.
A unified model for estimating the in-situ small strain shear modulus of clays, silts, sands, and gravels
Carlton, Brian D. (author) / Pestana, Juan M. (author)
Soil Dynamics and Earthquake Engineering ; 88 ; 345-355
2016-01-23
11 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2016
| British Library Online Contents | 2016
Stiffness of Clays and Silts: Normalizing Shear Modulus and Shear Strain
| Online Contents | 2013
Stiffness of Clays and Silts: Normalizing Shear Modulus and Shear Strain
| Online Contents | 2013