异形截面钢筋混凝土偏心拉压构件承载能力分析的电算方法

寻求异形截面钢筋混凝土偏心拉压构件承载能力分析的通用方法是一个难点。该文应用基本假定下统一的几何方程、物理方程和不同形式的平衡方程,采用受压区高度判别大小偏心,并通过数值方法解非线性方程,采取一定方法避免正确解的遗漏和对满足弯矩平衡不满足轴力平衡的假解的过滤,用求解得到的涵盖完整的四个象限的Nu-Mu承载能力相关曲线图,直观地对上下翼缘在偏心拉压等各种工况下的承载能力进行校核,借鉴校核求解过程并按合理途径增加两侧配筋一并解决设计问题,编制的程序为解决异形截面偏心受力钢筋混凝土构件配筋的设计和验算提供了方便实用的工具。

Computational Method of Analysis on Bearing Capacity of Shaped Section Steel Reinforced Concrete Eccentric Tension Compression Members

It is difficult to find a universal method of the analysis on bearing capacity of shaped section steel reinforced concrete eccentric tension compression members.The article uses the uniform geometrical,physical and different formed equilibrium equations by the basic assumption,uses the height of compression zone to judge the eccentric type,and uses the numerical method to solve the nonlinear equation,adopts some methods to avoid the missing of correct answer and the filtration of dummy answer that meets the bending moment equilibrium but not meet the axial force equilibrium, uses the derivation to attain all four quadrants of Mu-Nu curve graph related to the bearing capacity directly for checking of bearing capacity of the upper and lower flanges under various working conditions of eccentric tension and compression.Referring the checking and deriving process and according to the reasonable approach,the reinforcement is added at both sides to solve the design problem thoroughly.The developed program provides the convenient and practical tool to solve the design and computation of the reinforcement for the shaped section eccentric stressed reinforced concrete members.