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中文摘要：
为了研究层状岩体抗压强度的层面效应,通过室内试验和数值模拟研究,分析层状岩体单轴压缩情况下的应力应变响应以及强度特征。研究结果表明：随着结构面倾角的增大,层状岩体的压缩强度呈先减小后增大的趋势,含有90°倾角结构面的试样其抗压强度明显大于含有0°倾角结构面的试样对应的抗压强度;数值试验得到的分析结果与室内试验结果相同,岩样的变形特征大致分为弹性阶段、屈服阶段和破坏阶段;压缩强度均随加载速率的增大而增大,并且压缩强度与加载速率之间的关系均可通过线性方程进行拟合,相关系数较大;在实际试验过程中,应根据不同模拟工况采用不同的加载速率。
英文摘要：
In order to study the structural plane effect of stratified rock mass,the stress-strain response and strength characteristic of stratified rock mass under uniaxial compression were analyzed by laboratory tests and numerical simulation.The results show that,with the increase of structure plane inclination angle,the compressive strength first decreases and then increases.Strength of sample with 90° structural plane inclination angle is larger than that of sample with 0° structural plane inclination.Outputs of numerical calculation and laboratory tests are almost the same;the deformation of rock samples can be divided into three steps,i.e.,elastic step,yield step and failure step.The compressive strength increases with the increase of loading velocity,and their relationship curves can be well fitted by linear equation.In the real tests,the loading velocity should be chosen according to simulation situation.
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