Research On Temperature Effect Of Long-Span Cable-Stayed Bridge In Construction Control

In recent years, the construction technology of cable-stayed bridge has obtained greatly development. So the research of long-span cable-stayed bridge's construction control technology is becoming more and more important. The cable-stayed bridge in start construction process to the ratio less of the influence research that the temperature variety result in, but the temperature effect is the more important factor to affect cable-stayed bridge.Therefore,the function that studying the variety of the temperature to rise to the cable-stayed bridge has the important meaning. This paper is progressing the study about the critical technology on the practical project of Tie Luo Ping Cable-stayed Bridge in Hubei province, and the text launched the research at following works.On the foundation of developing circumstance of the detailed introduction domestic and international cable-stayed bridge in recent years,discuss the temperature variety to the output function of the cable- stayed bridge, and introduced the basic theories of the hot conduction, the formation that the temperature load, classification and characteristics, and domestic and international design standard in the provision that relevant temperature load.The study is based on Tie Luo Ping cable- stayed bridge, according to the Tie Luo Ping cable-stayed bridge designing, the data of construction and supervision reports, finite-elemented model of the bridge is established and the analysis is then carried out.Aim at a difference in temperature of season, the sunshine difference in temperature, reduceing suddenly difference in temperature these three kinds of different temperatures variety type suddenly to compute respectively, these the kinds of difference in temperature types from the various research to the influence that cable- stayed bridge produce, and analyze its main reasons.In this text, the circumstances of the temperature changing are simulated and analyzed. It has been verified by the control result of the Hubei Tie Luo Ping Cable-stayed Bridge.