钢筋混凝土箱形截面延性分析的计算机方法

以切比雪夫(Chebyshev)近似积分法为基础,提出了计算任意钢筋混凝土箱形截面M-φ关系的计算机方法.该法不仅可以减少循环次数,而且可有效地避免迭代过程中可能出现的死循环.此外还讨论了混凝土抗拉强度对截面延性和刚度的影响以及轴压比对截面延性的影响.文中给出了两个数值例题,并将其结果与文献的结果作了对比.

A Computer Method for Ductility Analysis of Reinforced Concrete Box Sections

Based on Chebyshev's integration, a computer method is proposed for calculating the moment-curvature relationship of reinforced concrete box sections. This method can reduce the numbers of loop and avoid effectively the dead loops which appear sometimes during the iteration. This paper also discusses the influences of the tensile strength of concrete on the ductility and stiffness of sections and of the axial force on the ductility of sections. Two examples are given and the relevance of our results to those of references[1], [2] is discussed.