Assessment on Temperature Effects on a Long Span Supension Railway Bridge
This paper aims to investigate the temperature behaviour of Tsing Ma Bridge through numerical simula tion and field monitoring.With appropriate assumption, fine finite element models of the deck plate, the section frame, and the bridge tower are constructed for thermal analysis.With an improved solar radiation model and temperature boundary conditions, the time-dependent temperature distribution within different components is calculated through transient heat transfer analysis.The numerical results are compared with the field measurement data obtained from the long-term monitoring system of the Bridge and it shows a very good agreement, in terms of temperature distribution and temperature variation in different time and in differ ent seasons.It is also observed that the modified solar radiation model can predict the temperature variation more accurately than the traditional radiation model.This exercise verifies the accuracy of the heat transfer analysis employed and the effectiveness of the monitoring system installed on the bridge.Integration of the numerical analysis and field monitoring provides a better and thorough understanding of temperature behav iour of the large-scale bridge.
Bo Chen Xiuli Li Shenglin Zhao Yong Xia
Key Laboratory of Roadway Bridge and Structural Engineering, Wuhan University of Technology, Wuhan, State Key Laboratory of Silicate Building Materials, Wuhan University of Technology, Wuhan, China
国际会议
哈尔滨
英文
636-645
2013-07-06（万方平台首次上网日期，不代表论文的发表时间）