Abstract
Due to the dynamic coupling effects of solar radiation, longwave radiation, convective heat transfer, shadows, and other factors, the temperature field and effect of steel structures are significantly non-uniform, differing from traditional concepts that regard the temperature variation of steel structures as a slow and uniform progress. This difference can hinder the correct understanding of the thermal behavior of steel structures and ignore some potential safety hazards. This paper provides a review of the studies for the non-uniform temperature field and effect of steel structures, and presents some outlooks on future developments on the basis of the current research situation. A summary of research on the temperature field and effect of space structures, bridges and radio telescopes initially establishes the basic cognitive framework for this field. In addition, then, the basic principles of the numerical simulation of temperature fields are introduced through heat transfer mechanism, and the experimental test methods of temperature and its effects are described based on typical test cases. Finally, with a view to the future, some suggestions and opinions are provided in consideration of deficiencies in the current research status. This paper hopes to provide some valuable references for future research in this field through research summary, method introduction and outlook.
Highlights
Steel structures are widely used in civil and industrial architecture for their advantages of high strength, light weight and strong deformation resistance [1]
Steel structures are exposed to solar radiation, and their non-uniform temperature distributions can cause complex temperature effects, which will directly affect engineering construction quality and structural closure accuracy [7,8], and the possible construction defects can even lead to potential safety hazards [9]
The Chiping Gymnasium is a typical suspen-dome with a stacked arch structure, its non-uniform temperature field under solar radiation has a remarkable effect on the hoop cable force, and the error between the practical and design pre-stressing force of the hoop cable can reach up to 212% due to non-uniform temperature variation during the construction period [35,36]
Summary
Steel structures are widely used in civil and industrial architecture for their advantages of high strength, light weight and strong deformation resistance [1]. Within the lifecycle of a steel structure, which includes the construction and service periods, due to the dynamic coupling effects of solar radiation, longwave radiation, convective heat transfer, shadows, and other factors, its temperature field and effect will have significant time variations and non-uniformity [2,3]. Steel structures are exposed to solar radiation, and their non-uniform temperature distributions can cause complex temperature effects, which will directly affect engineering construction quality and structural closure accuracy [7,8], and the possible construction defects can even lead to potential safety hazards [9]. An outdoor steel arch structure in Inner Mongolia was formed in summer, under conditions of strong solar radiation; the increase in structural temperature relative to air temperature as a result of environmental factors was not considered in the design and construction stage. Based on the above summary, improvements and developments of studies in this field are explored with a view to the future
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