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Experimental investigation of special-shaped concrete-filled steel tubular column to steel beam connections under cyclic loading
HighlightsSeismic behaviors of special-shaped concrete-filled steel tubular column to steel beam connection are researched.The failure modes of specimens with exterior diaphragm are shear failure of joint panel zone.The failure mode of specimen with vertical rib is tensile failure of concrete in joint panel zone.The inter-story drift generated by elastic bending deformation of beam and column is below half of total inter-story drift.A design formula for shear resistance of joint panel zone is proposed.
AbstractThis paper presents experimental investigation and numerical investigation on seismic behavior of special-shaped concrete-filled steel tubular (CFST) column to steel beam joints. Exterior diaphragm and vertical rib are respectively introduced as joint stiffeners. A pseudo static experiment was conducted to investigate load transmission mechanism, failure mode and seismic performance index based on load-deformation curves and strain curves. The seismic behavior of the two kinds of joints were compared and evaluated. The classification of the joints by stiffness is conducted according to Eurocode. Inter-story drift of the specimens was calculated with data from laboratory apparatus and verified with test results. A design formula of joint shear resistance based on internal load transmission was proposed for engineering application. A finite element model of special-shaped CFST to steel beam connections was established as a supplement to analyze load transmission mechanism.
Experimental investigation of special-shaped concrete-filled steel tubular column to steel beam connections under cyclic loading
HighlightsSeismic behaviors of special-shaped concrete-filled steel tubular column to steel beam connection are researched.The failure modes of specimens with exterior diaphragm are shear failure of joint panel zone.The failure mode of specimen with vertical rib is tensile failure of concrete in joint panel zone.The inter-story drift generated by elastic bending deformation of beam and column is below half of total inter-story drift.A design formula for shear resistance of joint panel zone is proposed.
AbstractThis paper presents experimental investigation and numerical investigation on seismic behavior of special-shaped concrete-filled steel tubular (CFST) column to steel beam joints. Exterior diaphragm and vertical rib are respectively introduced as joint stiffeners. A pseudo static experiment was conducted to investigate load transmission mechanism, failure mode and seismic performance index based on load-deformation curves and strain curves. The seismic behavior of the two kinds of joints were compared and evaluated. The classification of the joints by stiffness is conducted according to Eurocode. Inter-story drift of the specimens was calculated with data from laboratory apparatus and verified with test results. A design formula of joint shear resistance based on internal load transmission was proposed for engineering application. A finite element model of special-shaped CFST to steel beam connections was established as a supplement to analyze load transmission mechanism.
Experimental investigation of special-shaped concrete-filled steel tubular column to steel beam connections under cyclic loading
Liu, Jingchen (author) / Yang, Yuanlong (author) / Liu, Jiepeng (author) / Zhou, Xuhong (author)
Engineering Structures ; 151 ; 68-84
2017-07-08
17 pages
Article (Journal)
Electronic Resource
English
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