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我国钢筋混凝土结构设计规范(TJ10—74)中未列出偏心受压构件刚度和裂缝的计算方法。本文提供24根矩形截面钢筋混凝土短柱钢筋应变和部分试件受压混凝土应变全过程以及挠度和曲率的全过程量测资料,此外还提供大偏心受压试件裂缝宽度的量测资料。应变量测表明平均应变符合平截面假定,少数试件且量测至破坏阶段。验算表明,原先为完成规范中刚度和裂缝计算体系所建议的偏心受压刚度和裂缝计算公式符合较好。
The calculation method for the stiffness and cracks of eccentric compression members is not listed in the design specifications for reinforced concrete structures in China (TJ 10-74). This paper provides the whole process of strain measurement and deflection and curvature of the whole process of 24 reinforced reinforced concrete short columns reinforced concrete short columns reinforced concrete strain strain and some specimens, and also provides the measurement data of crack width of large eccentric compression test specimens. The strain measurement shows that the average strain conforms to the flat section assumption, and a few test pieces are measured to the destruction stage. The calculation shows that the eccentric compression stiffness and crack calculation formula originally proposed to complete the stiffness and crack calculation system in the specification are in good agreement.