摘要
本文在笔者以前工作的基础上,对描述槽型宽梁剪力滞的应力函数作了重要修正,使之既满足弯矩平衡,又满足轴力平衡。利用余能原理得到剪力滞函数的控制微分方程与边界条件;进而给出了简支梁与悬臂梁在均布荷载和单位集中荷载下的应力挠度计算公式。为了便于工程技术人员直接引用,推导了下承板有效宽度的计算公式,并给出相应的设计图表。最后给出了实际算例,与实测值和其他计算结果进行了比较。
In this paper, based on the author's previous studies, an important modification to the shear hysteresis function for deeribing the channel-shaped wide beam so that both equilibriums of moment and axial force are satisfied has been given. By use of the principle of complementary energy, the control differential equations and the boundary conditions for the shear hysteresis function are obtained. The formulas for calculating stresses and deformations in simple supported and cantilever beams under uniform load and concentraled unit load, and for calculating the effective width of lower deck plate are also given. Finally, numerical examples are given so as to compare with the measured value and other Iculated results.
出处
《北京建筑工程学院学报》
1991年第2期44-54,共11页
Journal of Beijing Institute of Civil Engineering and Architecture
关键词
槽型
剪力滞
铁路
桥
channel-shaped wide beam, shear hysteresis, complementary energy.
