人民黄河Issue(3)：83-85,89,4.DOI:10.3969/j.issn.1000-1379.2014.03.027
侧向支撑刚度对弧形闸门主框架稳定性影响
Impact Study of Lateral Supporting Stiffness for Main Frame Stability of Radial Gate
摘要
Abstract
The main frame of the radial gate could be simplified to weakly braced gate-type frame with limited lateral displacement. In order to re-flect the actual buckling mode,according to the theory of structural stability,the expression of constraint constant considering rotational stiffness and lateral stiffness,was deduced by equilibrium equation of the concentrically loaded columns with the end restricted. Then the buckling equation of radial-gate frame at different crossbeam linear stiffness and lateral stiffness could be deduced,and the exact solution of the effective length factor was given by trial calculation. An example showed that the practical formula was of high precision and generally applicable. When lateral supporting stiffness Kb was greater than 10,the framework stability was no longer improving obviously that the divide point of strong support and the weak sup-port was taken as 10;Effective length factors were greatly large between freedom and rigid support frame,thus the lateral support stiffness Kb signif-icantly affect the buckling load,we must first ascertain the strength of lateral support before determining the frame stability.关键词
弧形闸门/转动刚度/侧向支撑刚度/屈曲方程/计算长度系数Key words
radial gate/rotational stiffness/lateral stiffness/buckling equation/effective length factors分类
建筑与水利引用本文复制引用
赵春龙,王正中,刘计良,高歌,谭显文..侧向支撑刚度对弧形闸门主框架稳定性影响[J].人民黄河,2014,(3):83-85,89,4.基金项目
国家自然科学基金资助项目（51179164）；“十二五”国家科技支撑计划项目（2012BAD10B02）。 （）
