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1 April 2015 Temperature numerical analysis of a large rigid-continuous concrete bridge
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Structural temperature has been widely recognized as one of the most negative environmental effect on bridge. In this study, the temperature distribution of a large rigid-continuous concrete box girder bridge is investigated combining the numerical simulation and the field measurements. A temperature sensor system has be installed on the bridge for field monitoring the structural temperature. For simulation study, the fine tow-dimensional finite element (FE) model of box girder section is first constructed. Then, the time-dependent thermal boundary conditions are determined to extensively take account of environmental factors resulting of thermal effects on bridge. At last, transient heat transfer analysis is implemented on FE model and corresponding time-dependent temperature distribution is obtained. The analytical results are compared with the measurements for validation of the thermal analysis method. The results have very good agreements with the measurements, and the temperature variations exactly explicate the changes of environmental conditions such as solar radiation and ambient temperature of daily. The temperature simulation provides a foundation for the structural analysis of temperature induced effects.
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Linren Zhou, Lei Wang, Jinping Ou, and Xuefei Yu "Temperature numerical analysis of a large rigid-continuous concrete bridge", Proc. SPIE 9437, Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015, 94371S (1 April 2015);

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