岩土工程学报2017，Vol.39Issue(z2)：249-253,5.DOI:10.11779/CJGE2017S2060
双向叠层剪切箱的研制及模型土体振动台试验研究
Development of 2-D laminar shear box and shaking table tests on model soil
摘要
Abstract
The laminar shear box is the most commonly used soil container in shaking table tests for soil-structure dynamic interaction. On the basis of the development experience of the worldwide shear boxes, the two-dimensional laminar shear box with adjustable stiffness is developed, and the interlayered sliding device is improved. Through the shaking table tests on model soil under earthquake, the boundary effect of shear box can be eliminated when the seismic load is applied to only one horizontal direction. The mode of vibration and nonlinear behaviors of soil are studied, and the relationship between soil shear stress and seismic peak is presented. The test results show that the distribution of displacements at different heights of soil is close to the first mode of vibration, and the shear stress of soil and the envelope area of shear stress-strain hysteretic loop increases with the increase of seismic peak, but the increase rate of shear stress at the top and bottom of soil is obviously different.关键词
叠层剪切箱/振动台试验/边界效应/剪应力时程/滞回曲线Key words
laminar shear box/shaking table test/boundary effect/time history of shear stress/hysteretic loop分类
建筑与水利引用本文复制引用
曹文冉,田伟,李春..双向叠层剪切箱的研制及模型土体振动台试验研究[J].岩土工程学报,2017,39(z2):249-253,5.基金项目
中国石油天然气集团公司科学研究与技术开发项目(2016A-1004) （2016A-1004）
