Abstract:

In this paper , the general temperature distrihution principle and the temperature effect in the construc-tion of long-span continuous rigid frame hridges were investigated hy means of site measure , calculation and analy-sis, with the Guanyinsha Bridge as the research target. In the investigation , the finite-element software ANSYS was adopted to simulate the temperature field , and the effects of heat conductivity , specific heat and some houndalγ
conditions such as sunlight radiancy and wind speed on the temperature field were analyzed. Some recommended valuefì were then presented. It is shown that the simulated temperature field accords well with the measured one ,and that the stress and deflection calculated according to the simulated temperature field match the measured values well. As a result , the temperature field and the corresponding temperature-effect analysis of reinforced concrete hox girder can he conducted in real time according to the weather data from the weather hureau.

Key words: temperature field, continuous rigid frame hridge, monitoring, temperature-field simulation, temperature-effect analysis