铁道科学与工程学报2017，Vol.14Issue(12)：2631-2635,5.
GDS空心圆柱扭剪试验系统阻尼的测定
The damping determination of the gds hollow cylindrical torsional shear test system
摘要
Abstract
Through the dynamic triaxial test of the GDS hollow cylindrical torsional shear test system, the dynamic stress and dynamic strain process curve of water sample was obtained first. The system damping ratioλ1 was then calculated through the traditional equivalent linear model. The damping ratio of the system λ2 was calculated on the basis of the cross-correlation function method, and λ1 and λ2 were finally compared. The experimental result shows that the test damping ratio increases as the dynamic stress amplitude increases, and there is a certain linear relationship between them:λ=kσd and k is between 4×10-5 and 7×10-5.关键词
GDS空心圆柱扭剪试验/动态三轴试验/水试样/阻尼比Key words
GDS hollow cylindrical torsional shear test/dynamic triaxial test/water sample/damping ratio分类
建筑与水利引用本文复制引用
马倩倩,刘保健,韩珏,黄俊,解新妍..GDS空心圆柱扭剪试验系统阻尼的测定[J].铁道科学与工程学报,2017,14(12):2631-2635,5.基金项目
国家自然科学基金资助项目(51378004) （51378004）
