（1 内蒙古电力勘测设计院， 呼和浩特 010020； 2 内蒙古自治区建设工程施工图审查中心, 呼和浩特 010020； 3 新中远工程设计有限公司内蒙分公司， 呼和浩特 010020）

［摘要］从钢筋混凝土正截面承载能力计算时的平截面假定，不考虑混凝土的抗拉强度，钢筋应力-应变关系为理想弹塑性模型的基本假定出发，建立了任意形状截面各种应力图形的函数表达式。利用数学和力学方法，推导出计算钢筋混凝土任意形状截面构件截面延性系数的数学表达式，并给出了钢筋混凝土任意形状截面构件在外力作用下截面应力图形形状的判别式。

［关键词］钢筋混凝土； 任意形状截面； 延性系数

中图分类号：TU375文献标识码：A文章编号：1002-848X(2019)15-0110-07

Calculation of section ductility coefficient of reinforced concrete members with arbitrary shape

Sun Kejian1-3

(1 Inner Mongolia Power Exploration & Design Institute, Hohhot 010020, China; 2 Inner Mongolia Construction Engineering Drawing Reviewing Center, Hohhot 010020, China; 3 Inner Mongolia Branch of New Cosco Engineering Design  Co., Ltd., Hohhot 010020, China)

Abstract:Based on the assumption that the reinforced concrete cross-section is plane when calculated without considering concrete tensile strength and the assumption that reinforcement stress-strain relationship is ideal elastic-plastic deformation, A function expression of stress pattern in any shape section that has a symmetry axis was built. By using mathematical and mechanics method, a mathematical expression of reinforced concrete member section elongation coefficient in any shape section that has a symmetry axis was deduced, and a discriminant of reinforced concrete section stress graphics shape under action of outside forces in any shape section that has a symmetry axis was expressed.

Keywords:reinforced conncerete; arbitraty shape section; ductile coefficient

作者简介：孙克俭，学士，教授级高级工程师，Email：skj898989@163。