Using?FEM?Strength?Reduction?Method?Based?on?ANSYS?to??Solve?Slope?Safety?Coefficients

doi:10.3969/j.issn.1674-0696.2009.05.22

Journal of Chongqing Jiaotong University(Natural Science) ›› 2009, Vol. 28 ›› Issue (5): 899-901.DOI: 10.3969/j.issn.1674-0696.2009.05.22

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Using?FEM?Strength?Reduction?Method?Based?on?ANSYS?to??Solve?Slope?Safety?Coefficients

LIU Lin-chao¹, LiANG Bo¹, DIAO Ji²

?1.?School?of?Civil?Engineering?＆?Architecture,?Chongqing?Jiaotong?University,?Chongqing?400074,?China;??2.?Chongqing?Yutong?Highway?Engineering?Corporation,?Chongqing?400060,?China

Received:2009-04-10 Revised:2009-06-11 Online:2009-10-15 Published:2015-04-15

基于ANSYS的有限元强度折减法求边坡安全系数

柳林超¹,梁??波¹,刁??吉²

1.重庆交通大学土木建筑学院,重庆400074;2.重庆市渝通公路工程总公司,重庆400060

作者简介:柳林超(1980—),男,湖北武汉人,硕士研究生,主要从事岩土与地下工程。E-mail:linchao9657@sina.com。

Abstract

Abstract: A?kind?of?FEM?strength?reduction?method?to?analyze?the?slope?stability?is?introduced.?The?basic?principle?of?this?method,?the?physical?connotation?of?the?safety?coefficients,?the?selection?of?yield?criterion?and?flow?rule,?and?the?damage?criterion?of?slope?and?so?on?are?discussed.?A?new?group?of?cohesion?and?internal?friction?angles?are?obtained?by?decreasing?the?slope?strength?coefficients,?including?the?cohesion?and?internal?friction?angles?in?the?case?study.?And?then?these?coefficients?are?input?to?the?computer?to?calculate.?When?these?coefficients?are?non-onvergence,?the?reduction?coefficients?at?this?point?are?safety?coefficients.?The?results?show?that?calculating?safety?coefficients?of?the?slope?by?ANSYS?is?of?certain?practice?and?reliability.

Key words: FEM , strength reduction , slope stability , safety coefficients

摘要： 介绍了一种基于有限元的强度折减法的边坡稳定性分析方法,讨论了该方法的基本原理、安全系数的物理意义、屈服准则和流动法则的选用及边坡破坏的判据等。算例通过不断减小边坡强度参数黏聚力和内摩擦角,得到新的一组黏聚力和内摩擦角,再输入软件计算至不收敛,此时的折减系数就是边坡的安全系数。计算结果显示,用 ANSYS计算边坡的安全系数有一定的实用性和可靠性。

关键词: 有限元, 强度折减, 边坡稳定, 安全系数

CLC Number:

U416.1⁺4

LIU Lin-chao, LiANG Bo, DIAO Ji. Using?FEM?Strength?Reduction?Method?Based?on?ANSYS?to??Solve?Slope?Safety?Coefficients[J]. Journal of Chongqing Jiaotong University(Natural Science), 2009, 28(5): 899-901.

柳林超,梁??波,刁??吉. 基于ANSYS的有限元强度折减法求边坡安全系数[J]. 重庆交通大学学报（自然科学版）, 2009, 28(5): 899-901.

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Using?FEM?Strength?Reduction?Method?Based?on?ANSYS?to??Solve?Slope?Safety?Coefficients

基于ANSYS的有限元强度折减法求边坡安全系数

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