Numerical Simulation Analysis of Hydration Heat Effect in Bridge Pile Caps
Due to the large size and complex boundary conditions of the single-box double-cell pier top block in long-span prestressed concrete continuous beam bridges,the hydration heat of concrete during the initial casting stage can easily lead to a sharp temperature rise,which may subsequently induce temperature cracks.To effectively address this challenge,this study has developed a comprehensive fluid-solid coupling heat transfer and thermo-mechanical coupling model that takes into account the influence of prestressed pipelines.Utilizing the customization capabilities of ANSYS software,we have successfully established the corresponding finite element thermodynamic model.Through rigorous model validation,we have confirmed the rationality and effectiveness of the selected modeling method,element type,and material property settings,providing new solutions and strong support for the prevention and control of temperature cracks in bridge engineering.
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