地震工程学报2016，Vol.38Issue(5)：775-782,807,9.DOI:10.3969/j.issn.1000-0844.2016.05.0775
岩质高陡边坡地震动响应规律的振动台试验研究
Shaking Table Model Tests on the Seismic Response of a High and Steep Rock Slope
摘要
Abstract
A large-scale shaking table model test of a slope with a height of 1.8 m,length of 4.4 m,and width of 4.4 m was introduced.The materials are made of blanc fixe,river sand,gyp-sum,clay,and water in different ratios.The slope comprises 30°,45°,50°,and 60°inclined sur-faces.A series of tests were performed for different seismic waves,amplitudes,and frequencies. The results indicate that the local coordinate system is more adequate than the whole coordinate system when conducting research on the dynamic problems of the slope.Thus,we should use the airport surface direction L,the strike direction M,and the vertical direction N .The amplifica-tions of the peak accelerations gradually increase with the increase of slope angles,and there are two inflection points at 45°and 50°.However,the amplification along the slope strike direction is consistent.The amplifications of the accelerations in different directions gradually reduce with the increase of the peak ground acceleration of the input wave,which is an intensity saturation phe-nomenon.Simultaneously,there are predominant peak values in the airport surface direction L;however,there are no predominant peak values in the strike direction M and in the vertical direc-tion N .Therefore,the results reveal the mechanism of slope instability during an earthquake and provide seismic design references for slope engineering.关键词
岩质边坡/动力响应/振动台试验/地震动参数Key words
rock slope/dynamic response/shaking table test/ground motion parameter分类
建筑与水利引用本文复制引用
付晓,杨长卫,韩宜康..岩质高陡边坡地震动响应规律的振动台试验研究[J].地震工程学报,2016,38(5):775-782,807,9.基金项目
交通运输部建设科技项目(2013318800020) （2013318800020）
