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

Yubin Wang; Lei Wang; Kai Yan

doi:10.1117/12.2589002

22 March 2021 Method of separating temperature effect of daily solar radiation from strain monitoring of a concrete bridge

Yubin Wang, Lei Wang, Kai Yan

Author Affiliations +

Proceedings Volume 11593, Health Monitoring of Structural and Biological Systems XV; 1159331 (2021) https://doi.org/10.1117/12.2589002
Event: SPIE Smart Structures + Nondestructive Evaluation, 2021, Online Only

Conference Poster

Abstract

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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Yubin Wang, Lei Wang, and Kai Yan "Method of separating temperature effect of daily solar radiation from strain monitoring of a concrete bridge", Proc. SPIE 11593, Health Monitoring of Structural and Biological Systems XV, 1159331 (22 March 2021); https://doi.org/10.1117/12.2589002

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