兰州理工大学学报

兰州理工大学学报 ›› 2020, Vol. 46 ›› Issue (6): 143-147.

• 建筑科学 • 上一篇    下一篇

基于三维位移插值的边坡滑移面搜索模型

李忠1,2, 汪红星2, 张曦2   

  1. 1.上海工程技术大学 城市轨道交通学院, 上海 201620;
    2.兰州理工大学 土木工程学院, 甘肃 兰州 730050
  • 收稿日期:2019-11-11 出版日期:2020-12-28 发布日期:2021-01-07
  • 作者简介:李忠(1980-),男,甘肃兰州人,博士,副教授
  • 基金资助:
    国家自然科学地区基金(51768041)

The model for searching slope space slip surface based on three-dimensional displacement interpolation

LI Zhong1,2, WANG Hong-xing2, ZHANG Xi2   

  1. 1. College of Urban Railway Transportation, Shanghai University of Engineering Science, Shanghai 201620, China;
    2. School of Civil Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China
  • Received:2019-11-11 Online:2020-12-28 Published:2021-01-07

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摘要： 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.

关键词: 位移场, 最危险滑移面, 位移插值, 有限元

Abstract: 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 3D 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.

Key words: displacement field, most dangerous slip surface, displacement interpolation, finite element method

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