[1]刘忠玉,陈少伟..应变软化土质边坡渐进破坏的演化模型[J].郑州大学学报(工学版),2002,23(02):37-40.[doi:10.3969/j.issn.1671-6833.2002.02.011]
　LIU Zhongyu,Chen Shaowei.An evolutionary model of the progressive failure of softened soil slopes[J].Journal of Zhengzhou University (Engineering Science),2002,23(02):37-40.[doi:10.3969/j.issn.1671-6833.2002.02.011]

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应变软化土质边坡渐进破坏的演化模型()

分享到：

《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

23

期数:

2002年02期

页码:

37-40

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

An evolutionary model of the progressive failure of softened soil slopes

作者:

刘忠玉; 陈少伟.

郑州大学土木工程学院,河南,郑州,450002, 郑州大学土木工程学院,河南,郑州,450002

Author(s):

LIU Zhongyu; Chen Shaowei

关键词:

滑坡;  渐进破坏;  安全系数;  应变软化

Keywords:

landslides;  progressive destruction;  safety factor;  Strain softening

DOI:

10.3969/j.issn.1671-6833.2002.02.011

文献标志码:

A

摘要:

考虑到土体的流变效应,通过推广不平衡推力法,提出了具有应变软化性质的土质边坡渐进破坏的一个力学模型.该模型采用Maxwell松驰模型描述局部破坏后滑裂面上土体的抗剪强度随时间的变化情况,用时间安全系数来描述边坡的稳定状态,并且不必假定渐进破坏从坡角开始,因而更接近实际情况.通过数值模拟,清晰地揭示了边坡渐进破坏的历时演化过程,并证实了边坡的安全系数随时间推移而逐渐变小的规律.

Abstract:

Considering the rheological effect of soil, a mechanical model for the gradual failure of soil slope with strain softening properties is proposed by generalizing the unbalanced thrust method. This model adopts the Maxwell relaxation model to describe the change of shear strength of soil on the slip surface after local failure, and uses the time safety factor to describe the stable state of the slope, and does not have to assume that the gradual failure starts from the slope angle, so it is closer to the actual situation. Through numerical simulation, the diachronic evolution process of slope progressive failure is clearly revealed, and the law that the safety factor of slope gradually decreases with time is confirmed.

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