多层预拼装钢结构系统特殊连接螺栓性能试验研究  

Experimental Study on a New Bolt Connection Used in Multistory Fabricated Steel Structure

作　　者：丁娟[1,2] 张其林[1] 张齐[1] 陈国栋 杨彬[1] 

机构地区：[1]同济大学建筑工程系,上海200092 [2]长江精工钢结构(集团)股份有限公司

出　　处：《结构工程师》2014年第4期112-117,共6页Structural Engineers

摘　　要：某新型多层预拼装钢结构系统采用了钢板自攻螺纹螺栓连接形式,非现行规范中的连接类型,需完成相关试验进行论证。针对工程常用6种规格高强螺栓自攻螺纹连接进行了单向拉伸试验,研究了两种破坏模式,并将极限承载力与规范要求承载力设计值与预紧力进行比对,并且对M20(8.8S)螺栓进行预紧力时变效应测试,研究表明,此种连接类型在使用过程中可以保持一定的预紧力水平。A new kind of bolt connection consisted of self-tapping steel plate and high strength bolt will be used in a multistory fabricated steel structure system.But there are no regulations on such kind of bolted con-nection.Therefore,extensive experimental research on bolted connection was taken.The objective of the re-search was to determine the ductility and resistance of such connection.Different failure modes of bolted con-nections could be observed in the test.The ultimate bearing capacity was compared with that predicted by the current connection provisions specified in Chinese steel design standards.Besides a pretension experience was put,which demonstrates that this new kind of connection can satisfy the requirement of Chinese steel design code on pretension.

关 键 词：高强螺栓 破坏模式 抗拉承载力 性能试验 预紧力 

分 类 号：TU391[建筑科学—结构工程]