采用振动台模型试验，研究了地震作用下含反倾软弱夹层的斜坡的动力变形破坏特征和破坏过程。试验结果表明：①地震动作用下斜坡的变形和破坏特征与地震波类型、加载方向、振动强度有关，同时还与斜坡所含软弱夹层的厚度和坡体高程等因素有关。②含反倾软弱夹层的斜坡在地震动作用下为“震裂散体崩落”型破坏，坡面裂缝起主要的控制作用，并且具有沿坡面裂缝呈带状散体崩落的特点。其变形破坏集中在坡体的中上部，这与坡面水平加速度在该部位被显著放大有关。③相比薄软弱夹层，厚软弱夹层在震动过程中表现出一定的消能、减震作用。%The characteristics of dynamic deformation and failure process of slopes with an anti-dip weak interlayer under earthquakes were studied with shaking table model tests.Test results showed that the deformation and failure process of slopes under earthquakes are related not only to types,loading direction and vibration intensity of earthquake waves,but also to elevation of slopes and thickness of weak interlayer;slopes with an anti-dip weak interlayer fail in the mode of “crack-shatter collapse”under earthquakes with the characteristics of band-like collapse mainly controlled by cracks on slopes’ surface,deformation and failure concentrate on the upper part of slopes due to the significant amplification of the slope horizontal acceleration over there;compared to the thin weak interlayer,the thick one plays an important role in energy dissipation and shock absorption during shakings.
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