杠杆法求解力偶作用下连续梁的支座反力

文章编号:(201601-0026-04

杠杆法求解力偶作用下连续梁的支座反力

王开明,刘金涛

(安康市交通规划设计院,陕西 安康  725000

  本文研究发现连续梁在力偶作用下,杠杆力呈二次曲线函数-抛物线的变化规律,文章给出了力偶作用下三跨连续梁杠杆法求解支座反力的函数方程。同时还提供了带悬臂连续梁在竖向荷载作用下的支座反力求解方法,使杠杆法求解连续梁支座反力的运用得到拓展。

关键词杠杆法求解力偶作用连续梁支座反力

中图分类号:U441          文献标识码:A

Leverage to Calculate Support Reaction Force

of Continuous Beams Under the Force-couple Effecting

WANG Kai-mingLIU Jin-tao

Ankang Traffic Planning and Design InstituteAnkang Shaanxi 725000China

AbstractThis paper discovered the law that the lever will demonstrate as parabola when the force-couple effecting on the continuous beams. For the force-couple effecting on the 3 spans continuous beamsthe leverage calculating equations of the support reaction force could be got. Meanwhilethe support reaction force calculation methods for the cantilever beams ( of continuous beams) under the effects of the vertical loads was providedwhich expanded the utility of using leverage to calculate the support reaction force of the continuous beams.

Keys wordsleveragecalculatingcouple-force effectingcontinuous beamssupport reaction forces