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浙江大学学报(工学版)
J4  2010, Vol. 44 Issue (4): 789-797    DOI: 10.3785/j.issn.1008-973X.2010.04.029
    
Multienvironmental time similarity theory and its application
JIN Li-bing1,2, JIN Wei-liang1, WANG Hai-long1, XIA Jin1
1. Institute of Structural Engineering, Zhejiang University, Hangzhou 310027, China;
2. Department of Civil Engineering, Henan University of Technology, Zhengzhou 450052, China
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Abstract  

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.

Published: 14 May 2010
CLC:  TU375  
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Cite this article:

JIN Li-Bing, JIN Wei-Liang, WANG Hai-Long, JIA Jin. Multienvironmental time similarity theory and its application. J4, 2010, 44(4): 789-797.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2010.04.029     OR     http://www.zjujournals.com/eng/Y2010/V44/I4/789


多重环境时间相似理论及其应用

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.

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