# [1]张廼龙,郭小明,王向东.黏土坡稳定性的断裂力学分析[J].东南大学学报(自然科学版),2010,40(5):1029-1033.[doi:10.3969/j.issn.1001-0505.2010.05.028] 　Zhang Nailong,Guo Xiaoming,Wang Xiangdong.Fracture mechanics analysis on stability of clay slope with crack[J].Journal of Southeast University (Natural Science Edition),2010,40(5):1029-1033.[doi:10.3969/j.issn.1001-0505.2010.05.028] 点击复制 黏土坡稳定性的断裂力学分析() 分享到： var jiathis_config = { data_track_clickback: true };

40

2010年第5期

1029-1033

2010-09-20

## 文章信息/Info

Title:
Fracture mechanics analysis on stability of clay slope with crack

1 东南大学土木工程学院,南京 210096; 2 河海大学土木工程学院,南京 210098
Author(s):
1 School of Civil Engineering, Southeast University, Nanjing 210096, China
2 College of Civil Engineering, Hohai University, Nanjing 210098, China

Keywords:

TU43
DOI:
10.3969/j.issn.1001-0505.2010.05.028

Abstract:
The fracture characteristics of clay slope are computationally studied with the fracture mechanics method in finite element models. The most easily crack position(MECP)is investigated. The curves of the most easily crack position(MECP)versus slope heights and slope angles are presented quantitatively and separately. The curves of critical crack length(CCL)of different position versus slope heights and slope angles are also presented quantitatively and separately. At the same time, the curve of equivalent stress intensity factor(ESIF)versus the angle between crack and its left bank is obtained. The computational results show that the most easily crack position(MLCP)moves towards slope back away from slope face as the increase of slope height or slope angle; the critical crack length(CCL)of different position shortens as the increase of slope height but lengthens as the increase of slope angle. The results also show that the critical crack length(CCL)lengthens as the increase of distance from crack to the most easily crack position(MECP). The equivalent stress intensity factors(ESIFs)of several tilt cracks with different angle are computed. The deviation ratios of equivalent stress intensity factor(ESIF)of tilt cracks to equivalent stress intensity factor(ESIF)of vertical crack are no more than 4.5%. Therefore, tilt cracks can be treated as vertical crack in engineering practices. Based on those results, a criterion on crack stability is presented to control and monitor the slope safety during its design and running period.

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