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分析温度作用、混凝土收缩徐变效应对混凝土结构的作用,在T-B法混凝土徐变计算理论的基础上,应用按龄期调整的有效模量法来计算均匀温差作用下混凝土结构温度应力。研究底部分缝对超长混凝土板柱结构温度应力的影响,提出多种底部分缝形式,分析其对季节变化引起的均匀温差作用下超长板柱结构的温度应力和温度变形的削减,建立不同长度的结构模型,对其内力和变形进行比较,得出较为合理的底部分缝形式,为超长混凝土板柱结构温度裂缝控制提供参考。
The effects of temperature and concrete shrinkage and creep on the concrete structure are analyzed. Based on the theory of creep calculation of T-B method, the temperature stress of concrete structure is calculated by the effective modulus method according to age adjustment. The influence of the bottom slot on the temperature stress of the extra-long concrete slab structure was studied. A variety of bottom slot forms was proposed to analyze the temperature stress and temperature deformation reduction of the extra-long slab structure due to the seasonal variation. Different length of the structural model, the internal force and deformation are compared to obtain a more reasonable bottom of the seam form, for the super-long concrete slab column temperature cracking control provide a reference.