摘要
本文通过试验资料的对比分析,探讨了配筋和砼保护层厚度对钢筋砼受弯构件抗裂度的影响规律,提出了钢筋砼受弯构件考虑截面高度、配筋和砼保护层厚度影响的截面抵抗矩塑性系数计算公式。与现行规范计算公式比较,本文公式和试验资料的符合程度较好。
The patterns of the influence of reinforcement arrangement and the thickness of concrete covering upon the rupture resistance of reinforced concrete bending members is discussed through comparative analyses of test data. An formula to calculate the plasticity coefficient of the sectional resistance moment of reinforced concrete bending members, taking into account the influence of sectional height, arrangement of reinforcement and thickness of concrete covering, is given in the paper. Comparing with the formulas available in the prevailing standards in China, the formula given in this paper accords better with the test data.
