Observation and theoretical analysis of the temperature field on the crosssection of concrete filled steel tubes arch bridge rib

摘要

The author has carried on an outdoor long-term temperature fieldrnobservation experiment of a full-scale concrete component which is used in thernMudanjiang Bridge in Yilan, which is a half-through arch bridge withrnconcrete-filled steel tubes, for nearly three years. Through the test, we obtain therndisciplinarian of the temperature field on the cross section of the ribs, which is duernto the solar radiation, the atmosphere temperature, and natural reasons. Using thernheat transfer theory principle and finite element method, the paper proposed arncomputational method for the arch rib section’s temperature field of concrete filledrnsteel tubular arch bridges. The paper provides the basis and the reference for thernconstruction of this kind of bridge, which built is in an area where the temperaturerndifference is large. The study also provides reference for the determination ofrntemperature effect in the construction and design standard of concrete filled steelrntubes arch bridges, which will be established in the future.