【摘要】 钢结构工程中经常遇到一定宽度的均布荷载通过翼缘传递到腹板上的情况,这种荷载称为局部荷载。本文对工字形梁腹板在局部荷载作用下的弹性屈曲进行了有限元分析,得到了不同宽度的荷载作用下工字形梁腹板的弹性屈曲系数,着重考虑了翼缘的转动约束对腹板屈曲的影响。通过数据拟合得到了物理意义明确、精度很高的计算公式。更多还原

【Abstract】 Local load,or patch load,which is applied perpendicular to the flange of I-girders and transferred to the web,occurs in various situations in steel structures.A finite element analysis was carried out to investigate the elastic buckling of webs in I-girders under patch load.Elastic buckling coefficients considering the rotational restraints at the flange-web juncture were obtained and a formula with good accuracy and clear physical meaning was proposed.更多还原