竖向荷载作用下偏心受压短柱的应力重分布

当偏心垂直荷载作用在短柱的截面核心以外时,诸如砖工和素混凝土等抗拉性能极差的材料的短柱截面上将产生压应力重新分布,以平衡外荷载并使截面上没有拉应力出现。在本文中,我们推导出了计算此种压应力重分布的公式,包括截面有对称轴或无对称轴,以及合力作用点不在对称轴上等各种情况,并以例题来说明本文方法的应用。

Compressive Stress Redistribution of a Stout Column under eccentrical Loading

When the eccentrical loading exerts beyond the core of the crosssection, those masonary and plain concrete stout columns possesing poor tensile proof capacity would redistribute their compressive region so as to balance the loading on their cross-sections without tensile stress appearing on their cross-sections. In this study, we give the needed formulae to calculate the redistribation of the compressive stress on the cross-section for this with symmetrical axis or not. Examples also given to illustrate our method.