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首页> 外文期刊>Mathematical Problems in Engineering: Theory, Methods and Applications >Influence of Anisotropy and Nonhomogeneity on Stability Analysis of Fissured Slopes Subjected to Seismic Action
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Influence of Anisotropy and Nonhomogeneity on Stability Analysis of Fissured Slopes Subjected to Seismic Action

机译：各向异性和非均匀性对地震作用裂隙边坡稳定性分析的影响

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摘要

Based on the upper bound theorem of limit analysis, this paper presents a procedure for assessment of the influence of the soil anisotropy and nonhomogeneity on the stability of fissured slopes subjected to seismic action. By means of a mathematical optimization procedure written in Matlab software codes, the stability factors N-S and lambda(c phi) are derived with respect to the best upper bound solutions. A series of stability charts are obtained in this paper, and then the critical locations of cracks are determined for cracks of known depth. The results demonstrate a significant influence of the soil anisotropy and nonhomogeneity on the stability of the fissured slopes and the location distribution of the cracks. In addition, the procedures for getting the factor of safety are put forward. It is shown that a decrease in the nonhomogeneity coefficient n(0) and an increase in the anisotropy coefficient k could lead to the fissured slopes becoming unsafe. Finally, this article also illustrates the variation in the safety factor of fissured slopes under the impact of three factors (K-h, H-1/H, and lambda).
机译：基于极限分析的上限定理，提出了土体各向异性和非均质性对地震作用裂隙边坡稳定性影响的评估方法。通过用Matlab软件代码编写的数学优化程序，推导了稳定性因子N-S和lambda（c phi）相对于最佳上限解。本文得到了一系列稳定性图，然后确定了已知深度裂缝的裂纹临界位置。结果表明，土体各向异性和非均匀性对裂隙边坡的稳定性和裂缝位置分布有显著影响。此外，还提出了获得安全系数的程序。结果表明，非均匀性系数n（0）的减小和各向异性系数k的增加可能导致裂隙边坡变得不安全。最后，本文还阐述了K-h、H-1/H和λ3个因素影响下裂隙边坡安全系数的变化规律。

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    Liu Zhidan; Zhang Jingwu; Chen WeipingWu Di;

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    Zunyi Survey & Design Inst Water Conservancy & Hy, 167 Xima Rd, Zunyi 563000, Guizhou, Peoples R China;

    Qingdao Binhai Univ, Coll Architectural Engn, 425 West Jialingjiang Rd, Qingdao 266555, Peoples R China;

    East China Univ Technol, Sch Civil & Architectural Engn, 418 Guanglan Rd, Nanchang 330013, Jiangxi, Peoples R China;

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