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由于混凝土结构温差效应的复杂性,对于超长混凝土工程,我国现有规范尚未给出钢筋混凝土结构温差效应的计算方法,仅给出构造措施,这使得超长混凝土结构在不分缝设计上存在很多难题。针对超长结构不分缝设计,提出了考虑混凝土温度变化效应和徐变收缩效应及考虑控制带在施工阶段、使用阶段的温差来计算混凝土结构温度应力的方法;并采用控制带、后浇带和跳仓浇筑等施工方法来处理超长结构不分缝问题。
Because of the complexity of the temperature difference effect of concrete structure, for the extra-long concrete project, the calculation method of temperature difference effect of reinforced concrete structure has not been given yet in our country’s existing specifications, only the construction measures are given, which makes the super-long concrete structure exist A lot of problems. Aiming at the design of long structure with no gap, the method of calculating the temperature stress of concrete structure considering the temperature change effect and creep shrinkage effect of the concrete and the temperature difference of the control zone in the construction stage and the use stage is proposed. The control zone, And jump warehouse pouring and other construction methods to deal with long structure regardless of seam problem.