【摘要】 钢板箱形梁是工程中常采用的结构形式。为研究横隔板间距对集中荷载作用下简支钢箱梁畸变的影响,通过设置不同数量横隔板的简支钢箱梁,比较其在集中荷载作用下的畸变效应和刚性扭转效应,得到最大畸变效应随横隔板数量的变化曲线。在箱梁腹板顶端施加集中荷载,按畸变、刚性扭转、对称弯曲和偏心荷载四种工况采用荷载分解的方法进行计算。更多还原

【Abstract】 The influence of the spacing of diaphragm plates on the distortion of simply supported box girder is studied. By comparing distortion effect and rigid torsion effect of simply supported box girders installed with diaphragm plates in different numbers under the concentrated load, the authors obtain a curve showing that maximal distortion changes with diaphragm density. Thus a suggestion can be advanced as follows: when the ratio of diaphragm spacing d to the maximal dimension of crosssection b is greater than 1.92, the effect of distortion has to be considered in analyzing restraining torsion of the member with closed crosssection. This is a suggestion of guiding significance to the practical engineering, esp, high-rise core tube structure.更多还原