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本文通过有限元计算和非线性回归 ,建立了地下室钢筋混凝土墙板沿高度方向上的约束系数计算式。在此基础上 ,建立了混凝土在温度变形和收缩变形共同作用下的应力计算模型。并根据常用材料特性和气象资料确立了几何参数、材料参数及温度参数 ,并通过工程实型试验 ,验证了理论计算结果与实测结果的一致性 ,进一步提出了不同几何参数条件下 ,允许的最大温度变形、有效补偿量与裂缝控制的定量关系。
In this paper, by using finite element method and nonlinear regression, the formula for calculating the restraint coefficient along the height direction of the basement reinforced concrete wall slab is established. On this basis, the stress calculation model of concrete under the joint action of temperature deformation and shrinkage deformation was established. The geometrical parameters, material parameters and temperature parameters are established according to the characteristics of common materials and meteorological data. The consistency between the theoretical calculation results and the measured results is verified through engineering practice tests. The maximum allowable values under different geometrical parameters are also proposed. Quantitative Relationship between Temperature Deformation, Effective Compensation and Crack Control.