中文摘要：

利用专门设计的加载装置和夹支支座，对六个加强受压翼缘单轴对称的Q460GJC焊接H形梁构件进行了跨中有侧向支撑且受集中荷载作用条件下的加载试验。通过试验数据与《钢结构设计规范》中有关钢梁整体稳定相关计算值比较发现，试验结果与依据GB50017-2003类似计算方法得到的结果相接近，与修订版GB50017-201X的计算值存在差异。

英文摘要：

Six singly symmetric H-section beams welded by Q460GJ flame-cut steel plates were tested under a concentrated force at middle-span. The tested beams were laterally restrained at middle-span. Compared with the design strength from Code for Design of Steel Structures （GB50017-2003） and the latest version of the steel structure design code （GB50017-201X）, it is found that the test results are very close to the strength calculated by GB50017-2003 and the resistance calculated by GB50017-201X is more conservative.