# 曲线连续箱梁温度梯度效应研究Study on the Thermal Gradient Effect of the Continuous Curved Box-Girders

Abstract: According to the railway bridge code and highway bridge code, the thermal-structural coupling method was adopted in the research of the thermal gradient effect of the continuous curved box- girders. The results showed that the thermal effect calculated according to the railway code is greater than that calculated according to the highway bridge code except the radial stress. Also the factor impacting on the thermal gradient effect was studied through the calculating of the curved box-girders with different radius according to the high bridge code. It is shown that the radius has a great influence on the vertical deformation, longitudinal stress and support reaction, and the degree of non-uniform bearing performance in curved box-girders is linear with the central angle./span>

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