The Research of Space Temperature Distribution in Solid Tower of Extradosed Cable-Stayed Bridge

Abstract

Based on space temperature field test in solid tower of extradosed cable-stayed bridge, the method to calculate the space temperature field in solid concrete bridge tower is put forward systematically. By defining a series of meteorological parameters and concrete thermal parameters, the bridge tower temperature distribution is gotten. Compared with the experimental data, error is found within 21.38%, which shows that the temperature field algorithm is reasonable. Under the steady temperature field state, bridge tower section temperature distribution is analyzed within 24 hours, the result shows: maximum negative temperature difference appears on sunrise. Maximum negative temperature difference in transverse and longitudinal direction of bridge is 5.1 °C and 4.2 °C respectively. The most-positive temperature difference in transverse direction appears at 15 PM. The temperature difference value is about 20°C. This research simulates the temperature distribution in transverse and longitudinal directions of the bridge when maximum negative temperature difference appears in solid concrete bridge towers and provides the curve equation.