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本文在理论分析和试验研究的基础上,针对钢筋混凝土圆、环形截面偏心受压构件提出了在强度计算中混凝土矩形应力块换算系数的设计建议,建立了弹塑性钢环的计算模型。最终导出了大、小偏心统一,圆、环形截面统一的正截面强度计算公式及方法。该方法具有通用性且偏于安全,其计算结果与试验符合较好,可以用于实际工程设计。
On the basis of theoretical analysis and experimental research, this paper proposes a design proposal for the conversion coefficient of concrete rectangular stress block in strength calculation for reinforced concrete circular and circular section eccentric compression members, and establishes the calculation model of elastic-plastic steel rings. Finally, a formula and a method for calculating the strength of the normal section of the circular and circular sections with large and small eccentricities are derived. The method is versatile and partial to safety. The calculation results are in good agreement with the test and can be used for practical engineering design.