钱塘江某海塘整体稳定可靠度分析  

Reliability analysis of overall stability of Qiantang River seawall

作　　者：王卫标[1] 韩曾萃[1] 金伟良[2] 

机构地区：[1]浙江省水利水电河口海岸研究设计院,浙江杭州310020 [2]浙江大学土木工程系,浙江杭州310027

出　　处：《浙江大学学报（工学版）》2002年第4期366-370,共5页Journal of Zhejiang University：Engineering Science

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.

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 

分 类 号：TV871[水利工程—水利水电工程] TV311