中文摘要：

基于相似性理论,设计并完成了2个含不同厚度水平软弱夹层的岩质斜坡。试验模型高度、长度、宽度分别为1.80、1.65、1.50 m,坡角约60°,软弱夹层厚分别为3、15 cm。输入不同类型、激励方向、频率和振幅的地震波,利用大型振动台试验中传感器记录的数据和正交试验,研究了斜坡的加速度响应特征及其影响因素。试验结果表明：斜坡动力加速度放大系数分布存在明显的坡内高程效应和坡面的非线性趋表效应。斜坡水平向坡面放大系数随斜坡高程增加呈波动性增大,薄夹层斜坡中、上部表现更为明显。竖直向坡面放大系数因软弱夹层厚度而异,薄夹层斜坡局部减小后增大,最大放大值出现在坡肩位置,而厚夹层斜坡最大放大值出现在软弱夹层底部。同等强度地震力激励下,坡内竖直向放大系数不及水平向,约为0.75倍。坡面上,水平和竖直向放大系数的相对大小与高程有关。软弱夹层以下,竖向放大系数大于水平向,夹层以上则相反。软弱夹层对斜坡动力响应的影响也因激励方向不同而有所区别,对水平向动力响应有一定的放大作用,而对竖直向动力响应则是吸收减弱。斜坡动力响应所选因素的影响大小顺序依次为斜坡高程、坡体位置、软弱夹层厚度、激励振幅、加载波形、激励方向,其中斜坡高程、坡体位置以及软弱夹层厚度对斜坡动力响应具有显著性影响。

英文摘要：

Based on similarity theory, two models of rock slope with different thicknesses of horizontal weak interlayers are maded. The sizes of slope models are： 1.80 m in height, 1.65 m in length, 1.50 m in breadth, and the slope angel is about 60°, the thicknesses of weak interlayers are 3 cm and 15 cm, respectively. Using the recorded data of sensors in the large-scale shaking table test and orthogonal design, the acceleration dynamic response characteristics of slope and influencing factors are investigated with different input wave kinds, excitation directions, frequencies and amplitudes. The results show that the dynamic acceleration amplification coefficients in the slope body increase with increasing elevation, and the amplification coefficients show nonlinearly surface effect. The horizontal amplification coefficients along slope surface increase with the increase of elevation in the form of fluctuation, especially at the middle and upper part of the slope with thin interlayer. The vertical amplification coefficients differ owing to the thickness of weak interlayer, it decreases in the local part of slope with thin interlayer and then increase to the maximum at the shoulder, but it appears at the bottom of interlayer for the slope with thick interlayer. Under the equal input seismic load, the vertical amplification coefficients are 0.75 times the horizontal amplification coefficients in the interior of slope body. On the surface of slopes, the magnitude of amplification coefficients in both horizontal and vertical directions are concerned with the elevation. Under the weak interlayer, the vertical amplification coefficients are greater than the horizontal＇s, whereas above the weak interlayer, the result is reverse. The effect of weak interlayer on dynamic response of slopes also varies with the different excitation directions. The dynamic responses are amplified in horizontal direction, but it is weakened in the vertical direction. In order of importance, the factors influenting dynamic response of solpe is