| 考虑渗流参数相关性的边坡可靠度研究 |
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| 引用本文： | 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). |
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| 作者姓名： | 张璐璐 邓汉忠 张利民 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金，教育部高等学校博士学科点专项科研基金 |
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| 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.
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| 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 |
Reliability analysis of slope stability considering correlations among soil hydraulic parameters |
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| ZHANG Lu-lu,DENG Han-zhong,ZHANG Li-min.Reliability analysis of slope stability considering correlations among soil hydraulic parameters[J].Journal of Shenzhen University(Science &engineering),2010,27(1). |
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| Authors: | ZHANG Lu-lu DENG Han-zhong ZHANG Li-min |
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| Affiliation: | ZHANG Lu-lu1,DENG Han-zhong2,, ZHANG Li-min2 1)Civil Engineering Department Shanghai Jiaotong University Shanghai 200030 P.R.China2)Depanment of Civil Engineering The Hong Kong University of Science , Technology,Hong Kong |
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| 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 sl... |
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| Keywords: | soil mechanics slope stability unsaturated soils hydraulic properties completely decomposed granite soils in Hong Kong latin hypercube sampling |
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