地震工程学报Issue(2)：422-427,6.DOI:10.3969/j.issn.1000-0844.2015.01.0422
含泥化夹层反倾岩质边坡动力响应的大型振动台试验
Large-scale Shaking-table Test to Study Dynamic Responses of Anti-inclined Rock Slopes Interlayered with Silt
摘要
Abstract
A 1:30 scale model of an anti-inclined rock slope interlayered with silt was constructed, and a large-scale shaking-table test was performed to study the dynamic responses (acceleration and displacement)when the moisture content of silt layers change.The results are as follows:the horizontal amplification coefficients on the slope face after the silt layers became saturated were less than those before saturation;the coefficients increased with slope height in a nonlinear fash-ion;the coefficients on the slope face were larger than those in the slope body;before saturation, the displacement of the slope face increased in a nonlinear fashion with an increase in height;the displacement of the upper slope face (relative height between 0.6 and 0.9)was larger than those in other sections;after saturation,the displacement first increased and then decreased with in-creasing height,maximum displacement occurred near the top of the slope;and the slope displayed a bulging shape.Before saturation,slope failure occurs when the amplitude of the seismic wave is 0.3 g.After saturation,when the amplitude is no less than 0.4 g,first,slope failure occurs at the shoulder,then the slope slides and shears out from the upper levels,and simultaneously,longitu-dinal cracks appear and intersect with the horizontal fractures.The top of slope is left shattered.关键词
泥化夹层/反倾边坡/大型振动台/放大系数/位移Key words
siltized interlayer/anti-inclined slope/large-scale shaking-table/amplification coeffi-cient/displacement分类
天文与地球科学引用本文复制引用
范刚,张建经,付晓..含泥化夹层反倾岩质边坡动力响应的大型振动台试验[J].地震工程学报,2015,(2):422-427,6.基金项目
交通运输部建设科技项目(2013318800020) （2013318800020）
