Experimental and numerical investigation of novel triangular headed one-sided bolted T-stub connections

被引:0
作者
Mi, Shoudu [1 ]
Yang, Lu [1 ]
Xu, Kelong [1 ]
Han, Yawei [1 ]
机构
[1] Beijing Univ Technol, Coll Architecture & Civil Engn, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China
基金
中国国家自然科学基金;
关键词
Demountable steel structure; Triangular headed one-sided bolt (THOB); T-stub; Tension strength; Design recommendation; PARTIAL SHEAR CONNECTION; END-PLATE JOINTS; BEHAVIOR; DESIGN; STRENGTH; BEAMS;
D O I
10.1016/j.istruc.2024.107491
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The reliable one-sided bolts constitute a vital component of fully bolted joints in demountable steel structures. In this study, an innovative triangular headed one-sided bolt (THOB) based on the traditional hexagon headed bolt (HHB) was proposed, and the tensile performance of T-stubs using the THOBs has been investigated through experimental and numerical approaches. Monotonic tensile tests were performed on 25 THOB bolted T-stubs to analyze the failure modes and load-carrying performance of the specimens. The test results disclosed that, beyond the three typical failure modes stipulated in the Eurocode 3, the specimens exhibited a characteristic failure mode, namely, limit groove pull-off failure. Finite element models, validated by the test results, were employed for the parametric analysis to compare the load-carrying performance of THOB bolted T-stubs with that of HHB bolted T-stubs. The finite element analysis results indicated that the average ratio of the plastic loadcarrying capacity of THOB bolted T-stubs to HHB bolted T-stubs was close to 0.88. Furthermore, the loadcarrying capacity of THOB bolted T-stubs was evaluated using existing specifications for comparison with the experimental and numerical results, and Eurocode 3 calculations for the plastic load-carrying capacities of THOB bolted T-stubs demonstrated a commendable level of precision. Finally design recommendations were put forward based on the test and finite element analysis results.
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页数:19
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