基于强度折减法确定边坡临界滑面的小波变换法
发布时间：2019-01-07 21:28
【摘要】：临界滑面的确定一直是岩土工程界研究的热点问题。利用有限元-强度折减法对二维边坡进行稳定性分析时,对于进入极限平衡状态的边坡而言,沿边坡深度方向的等效塑性应变最大值点一般也就是临界滑面上的点。然后通过预设一组相互平行且与坡面近似垂直的直线,找出各直线上等效塑性应变的最大点,可得到一系列呈波动状分布的点,这些点构成了一组一维的信号函数;再利用小波分析对数据进行平滑处理就可得到边坡的临界滑面。通过经典算例分析并与Spencer法等前人的研究成果比较,结果表明该方法是合理有效的,可以用于边坡临界滑面的确定。
[Abstract]:The determination of critical slip surface has always been a hot issue in geotechnical engineering. When the finite element strength reduction method is used to analyze the stability of the two-dimensional slope, the equivalent plastic strain maximum point along the depth of the slope is generally the point on the critical slip surface for the slope in the limit equilibrium state. Then by presupposing a set of parallel lines which are approximately perpendicular to the slope surface, the maximum points of equivalent plastic strain on each line are found, and a series of fluctuating distribution points can be obtained, which constitute a set of one-dimensional signal functions. The critical slip surface of slope can be obtained by using wavelet analysis to smooth the data. Through the classical example analysis and the comparison with the Spencer method, the results show that the method is reasonable and effective, and can be used to determine the critical sliding surface of slope.
【作者单位】： 北京工业大学建筑工程学院;
【基金】：国家自然科学基金(No.11572009) 国家重点基础研究发展计划项目(973计划)(No.2011CB013505,No.2014CB047100)~~
【分类号】：TU43
本文编号：2404189
[Abstract]:The determination of critical slip surface has always been a hot issue in geotechnical engineering. When the finite element strength reduction method is used to analyze the stability of the two-dimensional slope, the equivalent plastic strain maximum point along the depth of the slope is generally the point on the critical slip surface for the slope in the limit equilibrium state. Then by presupposing a set of parallel lines which are approximately perpendicular to the slope surface, the maximum points of equivalent plastic strain on each line are found, and a series of fluctuating distribution points can be obtained, which constitute a set of one-dimensional signal functions. The critical slip surface of slope can be obtained by using wavelet analysis to smooth the data. Through the classical example analysis and the comparison with the Spencer method, the results show that the method is reasonable and effective, and can be used to determine the critical sliding surface of slope.
【作者单位】： 北京工业大学建筑工程学院;
【基金】：国家自然科学基金(No.11572009) 国家重点基础研究发展计划项目(973计划)(No.2011CB013505,No.2014CB047100)~~
【分类号】：TU43
【相似文献】
相关期刊论文 前10条
1 刘华强;陆明志;殷宗泽;;基于模拟退火算法的边坡临界滑面搜索方法[J];岩石力学与工程学报;2008年S2期
2 张常亮;李同录;李萍;;基于最大最小原理的三维边坡稳定性探讨[J];工程地质学报;2010年02期
3 杨洋;李协能;廖云平;史玲;刘荣灿;;基于改进变尺度混沌优化的临界滑面搜索及应用[J];重庆交通大学学报(自然科学版);2011年S1期
4 熊峥;周娟;伍法权;;土坡圆弧临界滑面的网鱼算法[J];煤田地质与勘探;2009年04期
5 张鲁渝;张建民;;基于Monte Carlo技术的临界滑面搜索算法的实现及改进[J];岩土工程学报;2006年07期
6 吴振君;王水林;汤华;王威;葛修润;;边坡可靠度分析的一种新的优化求解方法[J];岩土力学;2010年03期
7 刘江;;边坡临界滑面搜索的连续转移蚁群算法[J];交通科学与工程;2013年03期
8 梧松;李小强;吴玉山;;边坡非圆临界滑面之免疫遗传算法研究[J];岩土力学;2002年S1期
9 唐纯喜;金伟良;陈进;;基于遗传算法的土坡三维可靠度分析[J];岩石力学与工程学报;2007年S2期
10 ;[J];;年期
相关会议论文 前1条
1 王青;;应用最优化方法确定边坡临界滑面位移[A];水电与矿业工程中的岩石力学问题——中国北方岩石力学与工程应用学术会议文集[C];1991年
，本文编号：2404189
本文链接：https://www.wllwen.com/kejilunwen/diqiudizhi/2404189.html
