CYCLIC SHEAR BEHAVIOR CHARACTERISTICS OF MARINE SILTY SAND

被引：7

作者：

Son, Su Won ^{[1
]}

Ko, Mm Jae ^{[1
]}

Kim, Jin Man ^{[1
]}

机构：

[1] Pusan Natl Univ, Dept Civil & Environm Engn, Busan, South Korea

来源：

JOURNAL OF MARINE SCIENCE AND TECHNOLOGY-TAIWAN | 2017年 / 25卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

direct simple shear; cyclic loading; design contour; stress ratio; undrained shear failure behavior;

D O I：

10.6119/JMST-017-1226-20

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Owing to the high demand for energy supply, the use of offshore wind turbines as a renewable and environment-friendly energy source has been remarkably increased. After installation in the ocean, the offshore structure foundations and soil that support them are subjected to cyclic loading from wind and waves. In this study, laboratory experiments were conducted to evaluate the shear behavior characteristics of the marine soil subjected to cyclic loading. Utilizing a cyclic direct simple shear (CDSS) test apparatus, the undrained shear failure behavior of marine silty sand was investigated. The results show that the cyclic behavior and permanent shear strain were different depending on the average shear stress ratio. Failure criteria were proposed by analyzing the failure behaviors corresponding to various cyclic loadings. The proposed failure criteria may be used for the preliminary design of offshore structure foundations.

引用

页码：784 / 790

页数：7

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