The temperature stress of ultra long structure is an important issue that must be addressed in the design of ultra long structures.This article takes a large complex as an example to systematically introduce the method for calculating the temperature difference of ultra long structures,as well as the results of temperature stress analysis using YJK software.It also proposes corresponding measures to control cracks in ultra long structures,which can serve as a reference for engineering design.The analysis results indicate that there is a direct re-lationship between temperature stress and structural constraint conditions.The greater the constraint on the floor,the greater the tempera-ture stress on the floor.
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