Durability Model of Exposed Concrete On-Site Based on Dual Coupling Factors

doi:10.1007/s12205-021-0412-3

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	Durability Model of Exposed Concrete On-Site Based on Dual Coupling Factors
	Fu, Yong 1; Qiao, Hongxia 1,2; Lu, Chenggong 1; Hakuzweyezu, Theogene 1; Guo, Fei 1
刊名	KSCE JOURNAL OF CIVIL ENGINEERING
	2021-09
卷号	26 期号:1 页码:298-309
关键词	Relative quality relative dynamic elastic modulus evaluation parameter Life prediction Copula function Coupling factor Reliability
ISSN号	1226-7988
DOI	10.1007/s12205-021-0412-3
英文摘要	Aiming at the problem that the reliability analysis of the outdoor exposed concrete structure under the action of a single factor is not consistent with the actual service environment, a reliability analysis based on the Copula function describing multiple degradation factors is proposed. According to the actual data collected on-site, the relative quality evaluation parameters (RQEP) and relative dynamic elastic modulus evaluation parameters (RDEMEP) was selected as the key degradation indicators, and the Aperture Information Criterion (AIC) was used to determine the optimal marginal distribution function in different degradation trajectories, and obtain the most optimal edge distribution function under a single factor. Optimize the edge distributions reliability curve, establish the relationship between the edge distributions through the Copula function, and couple the edge distributions of the remaining life of the concrete to obtain the joint reliability function of the concrete under the action of the coupling factors. The results show that the selection of two degradation indicators, RQEP and RDEMEP, is helpful in establishing the concrete life prediction model in the field exposure environment, and the RDEMEP are more sensitive to the field exposure environment than the RQEP The Gumbel Copula distribution function can reasonably predict the reliability of exposed concrete on-site under dual coupling factors. The service life of C40 and C50 exposed concrete on site is about 400 and 550 months, respectively.
WOS研究方向	Engineering
语种	英语
出版者	KOREAN SOCIETY OF CIVIL ENGINEERS-KSCE
WOS记录号	WOS:000695788500009
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148614]
专题	土木工程学院
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, Western Engn Res Ctr Disaster Mitigat Civil Engn, Minist Educ, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Fu, Yong,Qiao, Hongxia,Lu, Chenggong,et al. Durability Model of Exposed Concrete On-Site Based on Dual Coupling Factors[J]. KSCE JOURNAL OF CIVIL ENGINEERING,2021,26(1):298-309.
APA	Fu, Yong,Qiao, Hongxia,Lu, Chenggong,Hakuzweyezu, Theogene,&Guo, Fei.(2021).Durability Model of Exposed Concrete On-Site Based on Dual Coupling Factors.KSCE JOURNAL OF CIVIL ENGINEERING,26(1),298-309.
MLA	Fu, Yong,et al."Durability Model of Exposed Concrete On-Site Based on Dual Coupling Factors".KSCE JOURNAL OF CIVIL ENGINEERING 26.1(2021):298-309.