多重环境时间相似理论及其应用  

Multi-environmental time similarity theory and its application

作　　者：金立兵[1,2] 金伟良[1] 王海龙[1] 夏晋[1] 

机构地区：[1]浙江大学结构工程研究所,浙江杭州310027 [2]河南工业大学土木工程系,河南郑州450052

出　　处：《浙江大学学报（工学版）》2010年第4期789-797,共9页Journal of Zhejiang University：Engineering Science

基　　金：国家自然科学基金重点资助项目(50538070);国家"863"高技术研究发展计划资助项目(2006AA04Z422);交通部西部科技项目(200631800019);浙江省科技厅重大科技专项资助项目(2006C13090);河南工业大学高层次人才基金资助项目(2008BS016);河南省教育厅自然科学研究计划资助项目(2010B560004);郑州市科技攻关计划资助项目(0910SGYN12300-1);郑州市科技领军人才计划资助项目(096SYJH34104)

摘　　要：为了有效地评估混凝土结构的耐久性,通过引入与研究对象具有相似环境条件且具有一定服役年限的第三方参照物,以经典的相似理论为基础,提出多重环境时间相似理论.该理论分析了混凝土结构在室内加速试验环境与现场自然环境条件下性能退化的时间相似关系,为利用室内试验结果对现场结构进行耐久性寿命预测和评估奠定了理论基础.多重环境时间相似理论不仅适用于混凝土结构耐久性评估,而且可以用于输电线路覆冰后的安全性、结构在地震作用下的动力响应、卫星在发射阶段的动力特性分析等.以沿海混凝土结构耐久性寿命预测为例介绍了多重环境时间相似理论的具体应用.In order to evaluate the durability of concrete structures effectively,based on the classical three similarity theorems,a multi-environmental time similarity （METS） theory was presented by introducing a third reference site with a certain service life and the similar aggressive environment to the study object to bridge the field inspections and the indoor accelerated tests.According to the METS,the time correlation of performance changing on concrete structures between the field and indoor accelerated environments was established by contrasting and analyzing the behaviours under both environments.Furthermore,the results of indoor tests were used to predict the service life of concrete structures.The METS can apply to the concrete structural durability,safety analysis of transmission line icing,structural dynamic response to seismic action,satellite dynamic analysis in launching phase,and so on.The specific application of METS was analyzed by taking the life prediction of coastal concrete structural durability as an example.

关 键 词：相似理论 试验环境 时间相似性 混凝土结构 耐久性 

分 类 号：TU375[建筑科学—结构工程]