进行了82个腹板压屈试验,其中20个试验为没有开洞腹板的槽形截面,62个为有开洞腹板的槽形截面。试验考虑了端部双翼缘受荷和内部双翼缘受荷2种工况。在有开洞腹板的试验中,洞口直接位于集中荷载处。集中荷载通过承重板施加;研究了不同支承长度的影响。另外,还考虑了翼缘与支撑固定和不固定2种工况。介绍了非线性弹塑性有限元模型,研究表明,在强度和失效模式下有限元模拟结果与试验结果均吻合较好。 82 web buckling tests were performed, of which 20 were slot-shaped sections without openings and 62 were channel sections with open webs. The experiment considered two kinds of working conditions of the end double flange and the internal double flange. In a test with open webs, the hole is located directly at the concentrated load. The concentrated load is applied through the load bearing plate; the influence of different bearing lengths is studied. In addition, the flange and support are also considered fixed and not fixed two kinds of conditions. The nonlinear elasto-plastic finite element model is introduced. The results show that the FEM simulation results are in good agreement with the experimental results in strength and failure modes.