混凝土箱梁水化热效应分析

Analysis of Hydration Heat Effect on Concrete Box Girder

以苏通大桥辅桥连续刚构墩顶现浇混凝土箱梁为实例,对其水化热温度场和应力场进行了分析,得到了箱梁水化热阶段的温度及应力的变化规律,提出了一些控制水化热温度及应力的合理建议,可供早期裂缝控制作参考。

Based on analysis of hydration heat effect on the cast-in-place segments on the piers＇ top of the continuous rigid-frame of Sutong Bridge,the distribution regularities of temperature field and stress field are summarized.Some reasonable measures are presented for controlling the early hydration temperature and its thermal stress, which could be consulted for crack control.