Infrared thermal imaging detection test is carried out for common assembled steel buildings to determine whether there are thermal bridge defective parts in steel beam and steel column parts of common assembled steel buildings.The nodes of steel beams and columns with thermal bridge defects are optimized,and the corresponding node models are established through numerical simulation to carry out optimization analysis of nodes without thermal bridges,the temperature distribution and heat flow density are compared under different insulation thicknesses,and the minimum thickness of insulation materials is determined to meet the requirements of assembled steel ultra-low energy buildings without thermal bridges.Using infrared thermal imaging detection method,the nodes of assembled steel structure ultra-low energy consumption buildings are experimentally verified.It is verified that the optimized nodes of assembled steel structure ultra-low energy consumption building have uniform temperature distribution,no serious thermal bridge defects,and meet the requirement of no thermal bridge in the nodes of assembled steel structure ultra-low energy consumption building.
prefabricated steel structureultra-low energy buildingsno thermal bridge optimizationnumerical simulationexperimental verification
NETL
NSTL
维普
万方数据
