全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
-  2016 

强降雨条件下花岗岩残积土边坡的时变可靠度 Time-dependent reliability of slopes made of completely decomposed granite under intense rainfall

Keywords: 花岗岩残积土,边坡稳定,强降雨,时变可靠度,失效概率

Full-Text   Cite this paper   Add to My Lib

Abstract:

通过研究给定湿润锋深度条件下花岗岩残积土边坡的系统可靠度,追踪湿润锋位置的变化,提出了考虑时变效应的花岗岩残积土边坡系统可靠度分析方法.研究表明,随着降雨时间的增加,边坡上层饱水层位置不断下移.当饱水层位置较浅时,边坡失效概率受最危险滑动面位置控制,且最危险滑动面位于非饱和土层中.随着饱水层厚度增加,边坡失效概率受两个分别位于饱水层和非饱和土层中的滑动面控制,系统效应明显.当饱水层厚度增加到一定程度时,边坡失效概率受位于饱水层中的最危险滑动面控制.对应地,边坡的时变可靠度的发展也分为3个阶段.提出的方法可以有效计算强降雨条件下花岗岩残积土边坡的系统可靠度

References

[1]  Zhang L L,Zhang L M,Tang W H.Rainfall-induced slope failure considering variability of soil properties[J].Geotechnique,2005,55(2):183-188.
[2]  Hassan A M,Wolff T F.Search algorithm for minimum reliability index of earth slopes[J].Journal of Geotechnical and Geoenvironmental Engineering,1999,125(4):301-308.
[3]  Chowdhury R,Xu D.Geotechnical system reliability of slopes[J].Reliability Engineering&System Safety,1995,47(3):141-151.
[4]  Lumb P.Effect of rain storms on slope stability[C]//Proceedings of the Symposium on Hong Kong Soils.Hong Kong,1962:537-552.
[5]  唐小松,李典庆,周创兵,等.不完备概率信息条件下边坡可靠度分析方法[J].岩土工程学报,2013(6):1027-1034.Tang Xiaosong,Li Dianqing,Zhou Chuanbing,et al.Reliability analysis of slopes with incomplete probability information[J].Chinese Journal of Geotechnical Engineering,2013(6):1027-1034.
[6]  Oka Y,Wu T H.System reliability of slope stability[J].Journal of Geotechnical Engineering,1990,116(8):1185-1189.
[7]  Ching J,Phoon K K,Hu Y G.Efficient evaluation of reliability for slopes with circular slip surfaces using importance sampling[J].Journal of Geotechnical and Geoenvironmental Engineering,2009,135(6):768-777.
[8]  Zhang J,Zhang L M,Tang W H.New methods for system reliability analysis of soil slopes[J].Canadian Geotechnical Journal,2011,48(7):1138-1148.
[9]  Vanapalli S K,Fredlund D G,Pufahl D E,et al.Model for the prediction of shear strength with respect to soil suction[J].Canadian Geotechnical Journal,1996,33(3),379-392.
[10]  李典庆,吴帅兵.考虑时间效应的滑坡风险评估和管理[J].岩土力学,2006,27(12):2239-2245.Li Dianqing,Wu Suaibing.Landslide risk assessment and management considering time effect[J].Rock and Soil Mechanics,2006,27(12):2239-2245.
[11]  Fredlund D G,Xing A.Equations for the soil-water characteristic curve[J].Canadian Geotechnical Journal,1994,31:521-532.
[12]  Wang H,Zhang J,Zheng W T,et al.System reliability analysis of slopes made of completely decomposed granite under intense rainfall infiltration[C]//Proceeding of the 6th Asian-Pacific Symposium on Structural Reliability and Its Applications,2016.
[13]  Madsen H O,Krenk S,Lind N C.Methods of Structural Safety[M].Prentice Hall,Englewood Cliffs,New Jersey,1986.
[14]  Hu J Z,Wang H,Ma J Z,Zhang J.Probabilistic assessment of the properties of completely decomposed granite[C]//6th Asian-Pacific Symposium on Structural Reliability and Its Applications,Shanghai,2016.
[15]  Zhang J,Tang W H.Study of time-dependent reliability of old man-made slopes considering model uncertainty[J].Georisk Assessment&Management of Risk for Engineered Systems&Geohazards,2009,2(2):106-113.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133