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http://dx.doi.org/10.12989/scs.2022.44.3.339

Tensile capacity of mortar-filled rectangular tube with various connection details  

Kim, Chul-Goo (Department of Architectural and Urban Systems Engineering, Ewha Womans University)
Kang, Su-Min (School of Architecture, Soongsil University)
Eom, Tae-Sung (Department of Architectural Engineering, Dankook University)
Baek, Jang-Woon (Department of Architectural Engineering, Kyung Hee University)
Publication Information
Steel and Composite Structures / v.44, no.3, 2022 , pp. 339-351 More about this Journal
Abstract
A mortar-filled rectangular hollow structural section (RHS) can increase a structural section property as well as a compressive buckling capacity of a RHS member. In this study, the tensile performance of newly developed mortar-filled RHS members was experimentally evaluated with various connection details. The major test parameters were the type of end connections, the thickness of cap plates and shear plates, the use of stud bolts, and penetrating bars. The test results showed that the welded T-end connection experienced a brittle weld fracture at the welded connection, whereas the tensile performance of the T-end connection was improved by additional stud bolts inserted into the mortar within the RHS tube. For the end connection using shear plates and penetrating stud bolts, ductile behavior of the RHS tube was achieved after yielding. The penetrating bars increased load carrying capacity of the RHS. Based on the analysis of the load transfer mechanism, the current design code and test results were compared to evaluate the tensile capacity of the RHS tube according to the connection details. Design considerations for the connections of the mortar-filled RHS tubes were also recommended.
Keywords
end-plate connection; mortar-filled tube (MFT); penetrating rebar; rectangular hollow section (RHS); shear end plate; spatial structures; steel truss; stud bolt connection; tensile test; welded T-end connection;
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Times Cited By KSCI : 5  (Citation Analysis)
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