Sensitivity Study on Durability Variables of Marine Concrete Structures

作     者：Xin'gang Zhou Kefei Li 

作者机构：Department of Civil Engineering Tsinghua University Beijing 100084 China School of Civil Engineering Yantai University Yantai 264005 China 

基　　金：Supported by NSTSP - 2011BAG07B04 

出 版 物：《Journal of Marine Science and Application》 (船舶与海洋工程学报（英文版）)

年 卷 期：2013年第12卷第2期

页      码：200-207页

摘      要：In order to study the influence of parameters on durability of marine concrete structures, the parameter＇s sensitivity analysis was studied in this paper. With the Fick＇s 2nd law of diffusion and the deterministic sensitivity analysis method （DSA）, the sensitivity factors of apparent surface chloride content, apparent chloride diffusion coefficient and its time dependent attenuation factor were analyzed. The results of the analysis show that the impact of design variables on concrete durability was different. The values of sensitivity factor of chloride diffusion coefficient and its time dependent attenuation factor were higher than others. Relative less error in chloride diffusion coefficient and its time dependent attenuation coefficient induces a bigger error in concrete durability design and life prediction. According to probability sensitivity analysis （PSA）, the influence of mean value and variance of concrete durability design variables on the durability failure probability was studied. The results of the study provide quantitative measures of the importance of concrete durability design and life prediction variables. It was concluded that the chloride diffusion coefficient and its time dependent attenuation factor have more influence on the reliability of marine concrete structural durability. In durability design and life prediction of marine concrete structures, it was very important to reduce the measure and statistic error of durability design variables.

主 题 词：marine concrete structures durability deterministic sensitivity analysis (DSA) probability sensitivity analysis (PSA) reliability chloride diffusion coefficient 

学科分类：08[工学] 081402[081402] 081304[081304] 0815[工学-矿业类] 081503[081503] 0813[工学-化工与制药类] 0814[工学-地质类] 

D　O　I：10.1007/s11804-013-1186-x

馆 藏 号：203158038...