The design principles of splice for upset stra ig ht screw sleeve connection are introduced as well as the mechanical properties a nd performances of sleeve splice and practical connecting technology.

• 介绍了镦粗直螺纹套筒连接接头的设计原则,探讨了套筒接头的力学性能及工作特性,阐述了镦粗直螺纹套筒的连接技术,指出镦粗直螺纹钢筋连接具有独特的技术优势,在国内大型建筑中应用效果显著。