[1]张璐璐,邓汉忠,张利民.考虑渗流参数相关性的边坡可靠度研究[J].深圳大学学报理工版,2010,27(1):114-119.
 ZHANG Lu-lu,DENG Han-zhong,and ZHANG Li-min.Reliability analysis of slope stability considering correlations among soil hydraulic parameters[J].Journal of Shenzhen University Science and Engineering,2010,27(1):114-119.
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考虑渗流参数相关性的边坡可靠度研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第27卷
期数:
2010年1期
页码:
114-119
栏目:
土木建筑工程
出版日期:
2010-01-31

文章信息/Info

Title:
Reliability analysis of slope stability considering correlations among soil hydraulic parameters
文章编号:
1000-2618(2010)01-0114-06
作者:
张璐璐1邓汉忠2张利民2
1.上海交通大学土木工程系,上海 200030;2.香港科技大学土木工程系,香港
Author(s):
ZHANG Lu-lu1DENG Han-zhong2and ZHANG Li-min2
1)Civil Engineering Department,Shanghai Jiaotong University,Shanghai 200030,P.R.China 
2)Depanment of Civil Engineering,The Hong Kong University of Science and Technology,Hong Kong
关键词:
土力学边坡稳定非饱和土渗流参数香港全风化花岗岩土坡拉丁超立方抽样法
Keywords:
soil mechanicsslope stabilityunsaturated soilshydraulic propertiescompletely decomposed granite soils in Hong Konglatin hypercube sampling
分类号:
TU 43
文献标志码:
A
摘要:
对香港全风化花岗岩土的土水特征曲线和渗透系数实测数据进行统计分析,研究参数的变异性和相关性. 以一个全风化花岗岩土坡为算例,采用拉丁超立方抽样法研究常年平均降水和强降雨两种条件下边坡稳定可靠度,并讨论渗流参数的相关性对边坡稳定可靠度的影响.研究结果表明,渗流参数的相关性假定对边坡稳定可靠度有较大影响.渗流参数完全不相关时,边坡稳定可靠度指标计算值偏小;完全相关时,可靠度指标偏大.在非饱和土边坡的可靠度分析中应考虑渗流参数的相关性,并采用合理的相关系数计算.
Abstract:
The statistics and correlations among the parameters of soil hydraulic property functions of completely decomposed granite soils in Hong Kong were studied.The reliability index of a 20 m high soil slope under two different rainfall conditions,i.e.,long-term precipitation condition and rainstorm condition,were obtained using Latin Hypercube Sampling technique.The resalts show that the reliability of the slope with soil hydraulic parameters which have no correlation is smallest while the reliability of the slope with perfectly correlated soil hydraulic parameters is largest.Therefore,it is important to consider the correlations among soil hydraulic properties and adopt appropriate correlation coefficients in reliability analysis of slope stability under rainfall condition.

参考文献/References:


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备注/Memo

备注/Memo:
收稿日期:2009-09-29;修回日期:2009-12-10
基金项目:国家自然科学基金资助项目(50809038);教育部博士点基金资助项目(200802481128)
作者简介:张璐璐(1978-),女(汉族),江苏省盐城市人,上海交通大学副教授.E-mail:lulu_zhang@sjtu.edu.cn
更新日期/Last Update: 2010-02-06