کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
303857 512756 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A unified model for estimating the in-situ small strain shear modulus of clays, silts, sands, and gravels
ترجمه فارسی عنوان
مدل یکپارچه برای برآورد مدول برشی کرنش کوچک در خاک، خاکستر، شن و ماسه و ماسه
کلمات کلیدی
مدول برشی، کشش کوچک، در موقعیت، رگرسیون اثرات ترکیبی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی

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 (Gmax,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 (Gmax,in-situ) from laboratory (Gmax,lab) measurements. This study validated and compared the resulting model with other existing models using a third database of measured Gmax,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.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Soil Dynamics and Earthquake Engineering - Volume 88, September 2016, Pages 345–355
نویسندگان
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