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Yiyun Wang

at Univ of Jinan

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Proceedings Article | 22 March 2021 Poster + Paper

Method of separating temperature effect of daily solar radiation from strain monitoring of a concrete bridge

Yubin Wang, Lei Wang, Kai Yan

Proceedings Volume 11593, 1159331 (2021) https://doi.org/10.1117/12.2589002

KEYWORDS: Bridges, Solar radiation, Safety, Solar radiation models, Radiation effects, Humidity, Environmental monitoring

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The monitoring value of strain of a concrete bridge is mainly affected by concrete shrinkage and creep, temperature, vehicle loads, etc. Seasonal temperature, daily solar radiation and cold current are the main influencing factors of temperature. Among them, temperature effect of daily solar radiation has a significant impact on the monitoring value of strain. Based on the monitoring data of the concrete bridge in Dongying City, Shandong Province, China, a method to separate the temperature effect of daily solar radiation from the monitoring value of strain of the bridge health monitoring system is obtained. Based on the analysis of the monitoring data of strain and temperature in the concrete girder, a model of the relationship between strain and temperature was established by using the unary linear fitting method. The strain separated from temperature effect of daily solar radiation can provide an effective basis for safety assessment of a concrete bridge.

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