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Experimental study on monotonic and cyclic behaviour of deconstructable beam-to-column composite joints
Highlights Deconstructable beam-to-column composite joints are tested under monotonic and cyclic loadings. The static and seismic structural performances of deconstructable beam-to-column composite joints are investigated. The influence of force-transmission sleeve on structural performance of deconstructable beam-to-column composite joints is evaluated. The deconstructability of deconstructable beam-to-column composite joints is assessed.
Abstract Deconstructable composite beams, in which bolted connectors are introduced between prefabricated concrete slabs and steel beams, offer promising demolition efficiency. Compared with conventional cast-in-situ composite floor systems, such novel composite beams provide favourable economic performance and sustainability by considerably improving the recyclability of structural components. In this study, four full-scale deconstructable beam-to-column composite joints with deconstructable beams were designed, manufactured, and tested under monotonic and cyclic loading. The structural performances—crack pattern, failure mode, strain distribution and moment–rotation response, energy dissipation, and deterioration evolution—were investigated thoroughly. The effects of the loading scheme and a force-transmission sleeve on the structural performances were simultaneously studied. The moment–rotation responses showed that the composite joints possess outstanding strength, rotation capacity, ductility, and energy dissipation ability. The deformability satisfies the minimum rotation capacity specified by Eurocodes 3 and 4. Strain analysis demonstrated that the composite beams provide favourable composite shear interactions. The installation of the force-transmission sleeve improved the strength of a composite joint owing to the incorporation of steel bars split by the column into the moment-resisting system. These deconstructable composite joints can achieve favourable deconstructability and demolition efficiency at the termination of service life, and thus, serve as novel structural members.
Experimental study on monotonic and cyclic behaviour of deconstructable beam-to-column composite joints
Highlights Deconstructable beam-to-column composite joints are tested under monotonic and cyclic loadings. The static and seismic structural performances of deconstructable beam-to-column composite joints are investigated. The influence of force-transmission sleeve on structural performance of deconstructable beam-to-column composite joints is evaluated. The deconstructability of deconstructable beam-to-column composite joints is assessed.
Abstract Deconstructable composite beams, in which bolted connectors are introduced between prefabricated concrete slabs and steel beams, offer promising demolition efficiency. Compared with conventional cast-in-situ composite floor systems, such novel composite beams provide favourable economic performance and sustainability by considerably improving the recyclability of structural components. In this study, four full-scale deconstructable beam-to-column composite joints with deconstructable beams were designed, manufactured, and tested under monotonic and cyclic loading. The structural performances—crack pattern, failure mode, strain distribution and moment–rotation response, energy dissipation, and deterioration evolution—were investigated thoroughly. The effects of the loading scheme and a force-transmission sleeve on the structural performances were simultaneously studied. The moment–rotation responses showed that the composite joints possess outstanding strength, rotation capacity, ductility, and energy dissipation ability. The deformability satisfies the minimum rotation capacity specified by Eurocodes 3 and 4. Strain analysis demonstrated that the composite beams provide favourable composite shear interactions. The installation of the force-transmission sleeve improved the strength of a composite joint owing to the incorporation of steel bars split by the column into the moment-resisting system. These deconstructable composite joints can achieve favourable deconstructability and demolition efficiency at the termination of service life, and thus, serve as novel structural members.
Experimental study on monotonic and cyclic behaviour of deconstructable beam-to-column composite joints
Hai, Letian (author) / Luo, Jiawei (author) / Yang, Lu (author) / Ban, Huiyong (author)
Engineering Structures ; 272
2022-09-18
Article (Journal)
Electronic Resource
English
Deconstructable flush end plate beam-to-column composite joints: component-based modelling
| TIBKAT | 2018