地震纵横波时差作用对顺层硬质岩坡动力响应的影响研究  

Study on the Effect of Time Difference of Seismic Wave on Dynamic Response of the Bedding Hard Rock Slope

作　　者：邵燕超 雷用[1] 文永逸[1] 

机构地区：[1]后勤工程学院土木工程系,重庆401311

出　　处：《重庆理工大学学报（自然科学）》2017年第11期128-134,共7页Journal of Chongqing University of Technology：Natural Science

摘　　要：运用有限差分软件FLAC3D,讨论了三维顺层硬质岩坡在不同时差工况下及不同岩层厚度条件下的动力响应特征,通过塑性区、位移云图等的变化分析了其变形机制。结果表明:纵波的张拉作用会对岩土体强度产生削减效果,横波的剪切作用是引起塑性区变化的关键因素;临空面岩层的厚度是影响其动力稳定性的一个关键因素。By using finite difference software FLAC3 D,the effect of time difference of seismic P-wave and S-wave on dynamic response of the bedding hard rock slope is discussed. The changes of the plastic zone and the displacement reveal the deformation mechanism of the slope. The results show the bedding hard rock slope is most likely to be destroyed when the seismic P-wave and S-wave both reach a larger value. The stretching effect of P-wave could weaken the mechanical strength of the rock masses,and the shearing effect of S-wave is the key factor of plastic zone changes.

关 键 词：顺层岩质边坡 地震 时差作用 动力响应 

分 类 号：TU4[建筑科学—土工工程]