钢筋混凝土双向偏心受压矩形截面直接设计方法

Direct Design Method of Biaxial Loaded Rectangular Sections of Reinforced Concrete Members

基于破坏曲面的等轴力相关曲线 ,提出了钢筋混凝土双向偏心受压矩形截面直接设计方法。有限元分析和数学回归表明等轴力相关曲线方程可靠 ,根据该方程 ,可把钢筋混凝土双向偏心受压矩形截面配筋设计转化为单向偏心受压矩形截面配筋设计。从算例中可看出 ,方法简单、实用、可靠 ,可供设计时参考。

The direct design method is put forward for reinforced concrete rectangle section with biaxial loads.This method is on the basis of curved surface of destroyed member,the related curved line for equal axial force is deduced by finite element interative method and mathematics regress,then section design of steel bar for biaxial load is transformed to section design of steel bar for one\|axial load with the related curved line for equal axial force.This method is simple,practical and reliable form the calculation results compared with finite element interative method.