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A platform for research: civil engineering, architecture and urbanism
Experimental study of deconstructable bolt shear connectors subjected to cyclic loading
Abstract An experimental study of deconstructable steel-concrete shear connectors using bolts under a low-cycle high-amplitude loading protocol is undertaken to investigate the effect of the concrete compressive strength, bolt size and its grade and size of clearance between the precast concrete slab and bolt on the load-slip response. To characterise the cyclic performance of the shear connectors, the ductility, strength degradation and absorbed energy are evaluated for all specimens. The experimental campaign includes twelve deconstructable shear connector specimens which were constructed and tested to failure. The failure modes involved severe concrete crushing, fracture of the bolt connectors, bolt bending and fracture, and bolt bending. In addition, three separate specimens were constructed and tested under monotonic loading and the results were compared with their cyclic test counterparts. The results obtained from the experiments show that the ultimate shear load capacity of the deconstructable steel-concrete shear connectors under cyclic loading was considerably less than that under monotonic loading. A structural model comprising of two parallel springs is also described and fitted to the experimental results to represent the load-slip response of the examined shear connectors.
Highlights Presents deconstructable and sustainable steel–concrete composite connections. Cyclic behaviour of steel-concrete composite connection is experimentally investigated. Steel-concrete composite connections have high ductility and energy dissipating capacity. The strength deterioration in cyclic loading is much higher than that in monotonic loading. A simple analytical hysteretic model is calibrated and developed.
Experimental study of deconstructable bolt shear connectors subjected to cyclic loading
Abstract An experimental study of deconstructable steel-concrete shear connectors using bolts under a low-cycle high-amplitude loading protocol is undertaken to investigate the effect of the concrete compressive strength, bolt size and its grade and size of clearance between the precast concrete slab and bolt on the load-slip response. To characterise the cyclic performance of the shear connectors, the ductility, strength degradation and absorbed energy are evaluated for all specimens. The experimental campaign includes twelve deconstructable shear connector specimens which were constructed and tested to failure. The failure modes involved severe concrete crushing, fracture of the bolt connectors, bolt bending and fracture, and bolt bending. In addition, three separate specimens were constructed and tested under monotonic loading and the results were compared with their cyclic test counterparts. The results obtained from the experiments show that the ultimate shear load capacity of the deconstructable steel-concrete shear connectors under cyclic loading was considerably less than that under monotonic loading. A structural model comprising of two parallel springs is also described and fitted to the experimental results to represent the load-slip response of the examined shear connectors.
Highlights Presents deconstructable and sustainable steel–concrete composite connections. Cyclic behaviour of steel-concrete composite connection is experimentally investigated. Steel-concrete composite connections have high ductility and energy dissipating capacity. The strength deterioration in cyclic loading is much higher than that in monotonic loading. A simple analytical hysteretic model is calibrated and developed.
Experimental study of deconstructable bolt shear connectors subjected to cyclic loading
Chiniforush, Alireza A. (author) / Ataei, Abdolreza (author) / Bradford, Mark A. (author)
2021-05-05
Article (Journal)
Electronic Resource
English
Sustainable Composite Beam Behaviour with Deconstructable Bolted Shear Connectors
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