The simulation analysis method for reinforced concrete tower climbing formwork construction under environmental factors
To investigate the spatial temperature and stress distribution in the pylon during climbing formwork construction,and to understand the linearity of the tower column,a simulation analysis method for pylon climbing formwork construction was proposed.Relevant subroutines were developed using the Fortran pro-gramming language,and the complex temperature boundaries ware applied to the structure,allowing for con-crete hydration heat release and shrinkage creep in different segments.The climbing formwork construction process of the pylon was analyzed using Abaqus software.The results show that the spatial temperature distri-bution of the pylon during construction is uneven,with a maximum temperature difference of 25.9 ℃ between the inside and outside of the tower columns,and a maximum temperature difference of 9 ℃ between the sunny and shaded sides.Considering the temperature effects,the tensile stress on the tower columns is greater,and the spatial stress distribution exhibits strong temporal variability.The linearity characteristics and variations of the pylon change.The cumulative vertical displacement of the pylon top increases and then decreases during the construction process,reaching a maximum of 20.5 mm in the 16th segment of climbing.The cumulative displacements in the longitudinal and transverse directions of the pylon during construction are larger,with maximum values of 6.5 and 22.3 mm,respectively.
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