Bin Rong, Changxi Feng, Ruoyu Zhang, Shuai Liu and
Guangchao You
Vol. 13 (2018), No. 1, 1–15
DOI: 10.2140/jomms.2018.13.1
Abstract
This paper examines the mechanical properties of T-shaped diaphragm-through
connections between CFST columns and steel beams under monotonic and cyclic
loading. A monotonic test and a cyclic test on two same specimens are described.
The experimental setup, connection configurations, and material properties are firstly
introduced, followed by a detailed account of the results and observations from
tests. The failure mode and the ultimate bearing capacity are similar in
the two tests, while the connection exhibits larger yield capacity and lower
ductility under cyclic loading than monotonic loading. Nonlinear finite element
analysis was also employed in this investigation. The predicted results are in
good agreement with the experimental ones so that the reliability of finite
element analysis is verified. Diaphragm-through connection and ordinary
beam-column connection are simulated and compared through FEM, and
failure modes of plastic hinge at beam end and column face yielding are
found respectively, which indicates a significant strengthening effect of the
diaphragm and the superior mechanical properties of the diaphragm-through
connection.
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