帽形加劲复杂卷边槽钢柱偏压性能试验研究

对共计18个简支试件进行偏心受压试验，分析并研究了未加劲、腹板中央帽形加劲、腹板和翼缘中央帽形加劲3种截面复杂卷边槽钢的极限承载力、失稳模式及变形特征等特性.结果表明:有效形心移动对偏心承压构件的承载能力有很大影响.在板件中央设置帽形加劲可以适当减小板件的宽厚比，显著提升受压构件的极限承载力及钢材利用率，但畸变屈曲在构件失稳模式中起控制作用.在同等条件下，板件中央帽形加劲偏压构件的承载效率提升了15%~70%.

Experimental Investigation on Channel Columns with Complex Edge Stiffeners and Cap Shaped Stiffeners Under Eccentric Compression

Eighteen simply supported eccentric compression specimens were tested to investigate the ultimate bearing capacity， instability mode， and deformation of three types of complex edge stiffened channels， including no stiffeners， intermediate cap shaped stiffeners in the web， intermediate cap shaped stiffeners in the web and the flanges. Results show that offset of the effective centroid has a significant effect on the bearing capacity of eccentric compressed members. Cap shaped stiffeners can effectively reduce the width-to-thickness ratio of the element and obviously increase the ultimate load bearing capacity as well as the steel utilization ratio of elements， but distortional buckling can become the dominate failure mode. Under the same conditions， the load bearing efficiency of plate with intermediate cap shaped stiffeners is improved by 15%~70%.