兰州理工大学学报

2020, v.46;No.206(06) 143-147

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基于三维位移插值的边坡滑移面搜索模型
The model for searching slope space slip surface based on three-dimensional displacement interpolation

李忠;汪红星;张曦;
LI Zhong;WANG Hong-xing;ZHANG Xi;College of Urban Railway Transportation, Shanghai University of Engineering Science;School of Civil Engineering,Lanzhou Univ. of Tech.;

摘要(Abstract):

最危险滑移面位置的确定是研究边坡稳定性的一项关键工作,而边坡失稳过程中岩土体位移特性变化是边坡稳定状态最直观的表现.本次研究采用有限元方法对边坡的位移场进行数值模拟,通过编程软件对导入的数值模拟结果进行编程开发,并利用空间位移插值算法,实现对边坡上最危险滑移面的精确、高效搜索.最后通过一个经典的三维边坡算例分析验证该方法和程序的合理性.该方法无需对滑移面形状与位置进行假设,计算结果可靠,并且易于编程.
The determination of the location of the most dangerous slip surface is a key work in the study of side slope stability. The change of displacement characteristics of rock and soil in the process of slope instability is the most intuitive manifestation of stability state of the side slope. In this research, the displacement field of the side slope is numerically simulated by finite element method. The imported numerical simulation results are developed through coding by a kind of programming software. The spatial displacement interpolation algorithm is then adopted to realize an accurate and efficient search to the most dangerous slip surface on the side slope. Finally, the rationality of the proposed method and coded program is verified by a classical example of 3 D side slope. This method does not need to assume the shape and position of slip surface, and the predicted result is reliable and meanwhile easy to program.

关键词(KeyWords): 位移场;最危险滑移面;位移插值;有限元
displacement field;most dangerous slip surface;displacement interpolation;finite element method

Abstract:

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基金项目(Foundation): 国家自然科学地区基金(51768041)

作者(Author): 李忠;汪红星;张曦;
LI Zhong;WANG Hong-xing;ZHANG Xi;College of Urban Railway Transportation, Shanghai University of Engineering Science;School of Civil Engineering,Lanzhou Univ. of Tech.;

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