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钱塘江某海塘整体稳定可靠度分析 被引量:7

Reliability analysis of overall stability of Qiantang River seawall
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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.
出处 《浙江大学学报(工学版)》 EI CAS CSCD 北大核心 2002年第4期366-370,共5页 Journal of Zhejiang University:Engineering Science
关键词 钱塘江 海塘 整体稳定可靠度 强潮河口 可靠指标 敏感性分析 塘前滩地高程 失效概率 overall stability macro tidal estuary reliability index sensitivity analysis flat level in front of the seawall
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