ABSTRACT
During the construction of hot mix asphalt paving, a temporal-spatial temperature field is generated on the steel box girder structure, which causes deformation and additional stress, as well as complex deformation characteristics and loading conditions due to the coupling effect of the load. This effect may even reduce the safety of the bridge structure, and currently, it needs to be given more attention in engineering design and construction. Based on the Peljesac Bridge project, this paper establishes a finite element model of the daily sunshine temperature field, determines the thermal parameters by comparing the measured sunshine temperature field with the numerical model on-site, and then establishes a numerical model of the high-temperature paving temperature field to analyze the temperature response of the steel box girder under high-temperature paving. By analyzing the stress-time curves of multiple nodes, the results show that during the high-temperature paving process, the maximum temperature response of the structure appears at the intersection of the crossbeam and the pedestrian walkway at 1700 seconds, with a magnitude of 128 MPa.
