Experimental and numerical study on cyclic behaviour of steel beam-to-column joints |
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Authors: | Jun He Teruhiko Yoda Hideaki Takaku Yuqing Liu Airong Chen Masashi Iura |
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Affiliation: | (1) European School for Advanced Studies in Reduction of Seismic Risk, IUSS (ROSE School), Via Ferrata 1, 27100 Pavia, Italy;(2) European Centre for Training and Research in Earthquake Engineering (EUCENTRE), Via Ferrata 1, 27100 Pavia, Italy |
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Abstract: | Ten specimens are tested to investigate the cyclic behavior of beam-to-column joints of steel frames with joint panels. The
performances of the joints with respect to strength, rigidity, and hysteretic performance are examined. Three different load-carrying
mechanisms can be identified. Panel resistance ratio (R
p
) is presented for predicting the buckling patterns. The validity ofR
p
is confirmed through the present experimental results. On the basis of the experimental results of steel beam-to-column moment
joints, 3-D nonlinear finite element models are established to analyze the mechanical properties of these connections. The
load-displacement curves of the finite element analysis are in good agreement with those of the tests in terms of strength
and unloading stiffness. A shear lag phenomenon was captured in the beam flanges by not only experimental results but also
numerical analysis. Parametric studies are conducted on the connections under monotonic loading to investigate the influences
of connection dimension, resistance ratio on the connection behavior. It was found that the failure modes are influenced by
the resistance ratio, while the thickness of joint panels resulting in large effects on the strength and stiffness under shear
failure mode. |
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Keywords: | |
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