Updated Liquefaction Resistance Correction Factors for Aged Sands

被引：57

作者：

Hayati, Hossein ^{[1
]}

Andrus, Ronald D. ^{[1
]}

机构：

[1] Clemson Univ, Dept Civil Engn, Clemson, SC 29634 USA

来源：

JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING | 2009年 / 135卷 / 11期

基金：

美国国家科学基金会;

关键词：

SOIL LIQUEFACTION; DETERMINISTIC ASSESSMENT; POTENTIAL EVALUATION; PENETRATION TEST; EARTHQUAKES;

D O I：

10.1061/(ASCE)GT.1943-5606.0000118

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Data from over 30 sites in 5 countries are analyzed to develop updated factors for correcting liquefaction resistance for aged sand deposits. Results of cyclic laboratory tests on relatively undisturbed and reconstituted specimens suggest an increase in the correction factors of 0.12 per log cycle of time and an average reference age of 2 days for the reconstitute specimens. Laboratory and field test results combined with cyclic resistance ratio (CRR) charts suggest an increase in the correction factors of 0.13 per log cycle of time and an average reference age of 23 years. A reference age of 23 years seems appropriate for the commonly used CRR charts derived from field liquefaction and no liquefaction case history data. Because age of natural deposits is often difficult to accurately determine, a relationship between measured to estimated shear-wave velocity ratio (MEVR) and liquefaction resistance correction factor is also derived directly from the compiled data. This new MEVR-liquefaction resistance correction factor relationship is not as sensitive to MEVR as in the relationship derived indirectly in a previous paper.

引用

页码：1683 / 1692

页数：10

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