高强螺栓T形件受拉连接设计方法研究  

Structural Design of High-Strength Bolt T-stub Tensile Connections

作　　者：刘秀丽[1] 曾明 王燕[1] LIU Xiuli;ZENG Ming;WANG Yan(School of Civil Engineering,Qingdao University of Technology,Qingdao 266033,China)

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033

出　　处：《建筑钢结构进展》2023年第2期23-31,共9页Progress in Steel Building Structures

基　　金：国家自然科学基金(52078258)。

摘　　要：钢结构高强螺栓T形件受拉连接的设计需考虑撬力影响,设计方法比较复杂,欧洲EC3、美国AISC和中国JGJ82等规范的设计方法均采用T形件模型理论,设计原理基本一致,但高强螺栓抗拉承载力设计值取值不同,各参数及钢材强度设计值取值也略有差异,故其设计结果也存在一定差异。对中美欧规范高强螺栓T形件受拉连接设计方法进行了比较分析,结合试验结果和算例分析了各国规范设计结果的差异。并根据分析结果、美欧规范方法以及相关参考文献研究结论提出了我国JGJ82修正设计方法,使得设计结果在保证安全储备的前提下更加经济,并一定程度上精简冗长的设计计算过程,更加便于工程应用。The determination of design approach for high-strength bolt T-stub tensile connections is challenging due to the impact of the prying force. T-stub models are used to develop tensile connections per the standards of EC3, AISC, and JGJ82. The T-stub design idea in both standards is essentially the same. However, various standards provide different design outcomes because of changes in the tensile capacity of high-strength bolts, connection parameters, steel strength design value and other pertinent elements. This study compares design approaches according to EC3, AISC, and JGJ82 standards. The variance of design outcomes according to various standards is examined in conjunction with the experiment and example results. Based on the trial findings, the design techniques of EC3 and AISC, and the research conclusions from relevant references, improved design approaches to JGJ82 are presented, with more significant economic advantages and adequate safety margin. The improved approaches can reduce the complicated calculation procedure and simplify engineering applications.

关 键 词：钢结构 T形件受拉连接 撬力 破坏模式 设计方法 

分 类 号：TU391[建筑科学—结构工程]