The Correlative Analysis of Temperature and Stress Based on Monitoring Data on the Cable-Stayed Bridge

Abstract:

Based on the monitoring data of Jiujiang Bridge Health Monitoring System, the relation of the temperature and girder stress for the concrete cable-stayed bridge is analyzed. Firstly, taking the acquired stress and the corresponding temperature data for one month as analyzing samples, the daily mean of stress and temperature is calculated with all 72 sets of everyday data, and the relative value of stress and temperature is obtained by the comparison of the reference day. Result shows a strong linear correlation between stress and temperature. The trend equation between temperature and stress is then fitted by the least square method. Finally, the effect of temperature for girder stress have eliminated with the trend equation and the safety threshold of condition evaluation for the girder is set by probability statistics theory.

• Periodical: Applied Mechanics and Materials (Volumes 256-259)
• Pages: 1509-1514
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.256-259.1509
• Online since: December 2012
• Authors: Xiu Yong Wang, Wang Long Lei, Yi Yang, Qi Yang, Hong Xin Sun
• Keywords: Correlation Analysis, Health Monitoring System, Stress, Temperature

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