砼梁控制断面的延性智能分析

Ductility Analysis to the Control Section of Concrete Beam

描述了砼梁控制断面在不同加载阶段的弹塑性性质,说明了衡量弹塑性状态下砼梁的变形能力、抗载能力等效应的指标———延性系数的作用及计算公式,并以此为理论依据编制了砼梁控制断面延性的机算机分析程序.为了使计算结果不仅能反映延性变化的规律,而且也能满足工程实际的需要,编制时充分考率了规范中条文的要求.最后总结了程序在以小变形为运用前提下的使用方向以及程序所具有的对计算结果给予智能建议的特点等.

The elastic - plastic effects and a characteristic of the control section of concrete beams during loaded at different stages were described, and the effect indicators of measuring elastic - plastic load, namely, the role and formula of ductility coefficient were introduced. A programme has been compiled to control the section ductility analysis on the base of this principle.