钱塘江某海塘整体稳定可靠度分析
|
摘要
在研究软土地基上海塘稳定性分析方法的基础上 ,对强潮河口海塘引入塘前滩地高程作为基本随机变量 ,并进行整体稳定的可靠性研究 .以钱塘江某海塘为例进行分析 ,得到了可靠指标和失效概率 ,对影响海塘整体稳定的因素进行了敏感性分析 ,指出塘前滩地高程在海塘整体稳定可靠度分析中的重要作用 .
Certainty and uncertainty analysis methods and introduction of a random variable for the flat level in front of the seawall were resorted to to study the reliability of the overall stablility of the macro tidal estuary seawall constructed on softsoil foundation. The calculation model was established. The formulas were deduced and the computer programs were developed. According to the seawall engineering in Qiantang River estuary, which is a typical macro tidal estuary, the reliability index and failure probability were obtained. Sensitivity analyses of the major factors affecting the overall stable reliability of the seawall showed that they were the mean and variance of the flat level in front of the seawall and the mean of the soil friction angle; which indicated that the flat level in front of the seawall should be considered as one of the random variables of great importance in reliability analysis of the overall stability of seawall in macro tidal estuary.
Certainty and uncertainty analysis methods and introduction of a random variable for the flat level in front of the seawall were resorted to to study the reliability of the overall stablility of the macro tidal estuary seawall constructed on softsoil foundation. The calculation model was established. The formulas were deduced and the computer programs were developed. According to the seawall engineering in Qiantang River estuary, which is a typical macro tidal estuary, the reliability index and failure probability were obtained. Sensitivity analyses of the major factors affecting the overall stable reliability of the seawall showed that they were the mean and variance of the flat level in front of the seawall and the mean of the soil friction angle; which indicated that the flat level in front of the seawall should be considered as one of the random variables of great importance in reliability analysis of the overall stability of seawall in macro tidal estuary.
引文
[1]钱家欢.土力学[M].南京:河海大学出版社,1988.171-172.QIAN Jia- huan.Soil m echanics[M].Nanjing:HehaiU niversityPress,1988.171-172.
[2]高大钊.土力学可靠性原理[M].北京:中国建筑工业出版社,1989.5-7,167-174.GAO Da- zhao.Probability principle of soil mechanics[M].Beijing:ChinaArchitectureIndustrialPress,1989.5-7,167-174.
[3]吴世伟.结构可靠度分析[M].北京:人民交通出版社,1990.98-101.WU Shi- wei.Structural reliability analysis[M].Beijing:People'sCom municationPress,1990.98-101.
[4]张乃良,孙宗池.最优化方法[M].济南:山东大学出版社,1995.156-159.ZHANG Nai- liang,SUN Zong- chi.The optimizationmethod[M].jinan:ShandongU niversityPress,1995.156-159.
[5]何广讷,杨斌.海堤地震稳定性的概率分析[J],海洋工程,1995,13(1):62-69.HE Guang- nai,YANG Bin.Probability analysis for theseism ic stability of seawall[J].TheOceanEngineering,1995,13(1):62-691
YongR N.AlonsoE,TabbaM M.Application of riskanalysis to the prediction of slope instability canadian geotechnique[J].1977,14.
[2]高大钊.土力学可靠性原理[M].北京:中国建筑工业出版社,1989.5-7,167-174.GAO Da- zhao.Probability principle of soil mechanics[M].Beijing:ChinaArchitectureIndustrialPress,1989.5-7,167-174.
[3]吴世伟.结构可靠度分析[M].北京:人民交通出版社,1990.98-101.WU Shi- wei.Structural reliability analysis[M].Beijing:People'sCom municationPress,1990.98-101.
[4]张乃良,孙宗池.最优化方法[M].济南:山东大学出版社,1995.156-159.ZHANG Nai- liang,SUN Zong- chi.The optimizationmethod[M].jinan:ShandongU niversityPress,1995.156-159.
[5]何广讷,杨斌.海堤地震稳定性的概率分析[J],海洋工程,1995,13(1):62-69.HE Guang- nai,YANG Bin.Probability analysis for theseism ic stability of seawall[J].TheOceanEngineering,1995,13(1):62-691
YongR N.AlonsoE,TabbaM M.Application of riskanalysis to the prediction of slope instability canadian geotechnique[J].1977,14.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心