Experimental And Theoretical Research For Influence Of Shrinkage And Creep To Tall Building Considering Construction Process

By on-site experiment to reinforced columns during the construction period, the columns' total strain including shrinkage and creep in construction circumstance was obtained, and curves of strain development was made. This result has practical significance. In this paper's theoretical section, base on current shrinkage and creep calculational methods, analysis to the experiment project and tall building structure examples were made, and then the influence of shrinkage and creep to structure stress was put into discussion; moreover, an FEA program was compi led to calculate shrinkage and creep strain considering construction process, and through a tall building instance, the influence to tall frame structure stress was analyzed. The result indicates that due to the development of shrinkage and creep, appending stress may engender because of imbalance strain , which should be considered in structural design; meanwhile, when calculating, considering the construction process or not may lead to an obvious error.