ABSTRACT
ABSTRACT: The surface temperature of concrete bridge is extremely high in summer. If sudden drop of air temperature happens, the surface temperature will drop dramatically, which causes serious nonlinear temperature field and self-stress of the bridge. When the stress exceeds the tensile strength of the concrete, concrete cracking happens. As a novel bridge in China, the finback bridge across Dazhi River in Pudong district of Shanghai was investigated. A 2-D model of the bridge was built and the temperature field of the fin under sudden drop in temperature was studied based on the local meteorological data. The results show that the temperature distribution of the fin exhibits obvious nonlinear characteristics and the maximum temperature difference of the fin reaches 11.5◦C. The results provide a basis for further stress analysis of similar structures.
1 INTRODUCTION
