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首页> 外文会议>SSTA(Shell Structures: Theory and Applications) Conference; 20051012-14; Jurata(PL) >Influence of torsion on carrying capacity of steel girders analysed as shell assemblies
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Influence of torsion on carrying capacity of steel girders analysed as shell assemblies

机译：扭转对作为壳体组件的钢梁承载力的影响

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Few experimental investigations described in the literature of steel thin-walled girders with very slender webs under bending and torsion clearly proved that in the post-buckling state their torsional rigidity considerably decreases and the torsional stresses have substantial influence on the behaviour and the capacity of the tested models. A series of thin-walled box and double-tee beams with webs of slenderness ratios 200, 250, 300 was analysed in the way of numerical simulations carried out with use of the programme ABAQUS 6.4. Paths of equilibrium were determined for those models with and without imperfections. As a consequence of the introduction of a torsional moment due to eccentric placement of the transverse force a reduction of the carrying-capacity of the box girders up to 50% their bending resistance occurred. Calculations of the capacity of the models according to standard recommendations were also carried out.
机译：很少有研究表明，在弯曲和扭转作用下具有非常细长腹板的钢制薄壁梁的试验研究清楚地表明，在屈曲后状态下，其扭转刚度会大大降低，扭转应力对梁的性能和承载力产生重大影响。测试的模型。通过使用程序ABAQUS 6.4进行数值模拟，分析了一系列细长比为200、250、300的薄壁箱形和双T型梁。确定了有无缺陷模型的平衡路径。由于偏心放置了横向力而引入了力矩，因此导致箱形梁的承载能力下降了50％。还根据标准建议对模型的容量进行了计算。

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