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A platform for research: civil engineering, architecture and urbanism
Damage Control of Composite Steel Beams Using Flexible Gel-Covered Studs
This paper proposes flexible-gel-covered (FGC) studs to reduce the seismic damage of a concrete floor slab in a steel frame. Flexible gel strips intentionally release the shear constraint between the slabs and the steel beams. To evaluate the effectiveness of the proposed FGC studs, a proof-of-concept test was conducted. Three beam-column connection specimens with different shear-constraint configurations were designed and quasistatically tested according to a seismic loading protocol. The load-deformation relationship, crack development, and other results were obtained and indicated that the slab cracking and beam strain were reduced, whereas the initial stiffness and load-carrying capacity also slightly decreased. The results are promising but not satisfactory, and the current design still requires extensive floor slab repair after a large earthquake. Thus, the appropriate shape and configuration of the FGC stud must be further investigated. Based on the test results, a sophisticated finite-element numerical model was developed using widely used commercial finite-element computer software, and could reproduce the hysteresis behavior, including the beam-end fracture. Finally, parametric analyses were conducted to obtain the desirable shear-constraint behavior.
Damage Control of Composite Steel Beams Using Flexible Gel-Covered Studs
This paper proposes flexible-gel-covered (FGC) studs to reduce the seismic damage of a concrete floor slab in a steel frame. Flexible gel strips intentionally release the shear constraint between the slabs and the steel beams. To evaluate the effectiveness of the proposed FGC studs, a proof-of-concept test was conducted. Three beam-column connection specimens with different shear-constraint configurations were designed and quasistatically tested according to a seismic loading protocol. The load-deformation relationship, crack development, and other results were obtained and indicated that the slab cracking and beam strain were reduced, whereas the initial stiffness and load-carrying capacity also slightly decreased. The results are promising but not satisfactory, and the current design still requires extensive floor slab repair after a large earthquake. Thus, the appropriate shape and configuration of the FGC stud must be further investigated. Based on the test results, a sophisticated finite-element numerical model was developed using widely used commercial finite-element computer software, and could reproduce the hysteresis behavior, including the beam-end fracture. Finally, parametric analyses were conducted to obtain the desirable shear-constraint behavior.
Damage Control of Composite Steel Beams Using Flexible Gel-Covered Studs
Deng, Kailai (author) / Zeng, Xianzhi (author) / Kurata, Masahiro (author) / Zhao, Canhui (author) / Onishi, Kako (author)
2019-12-20
Article (Journal)
Electronic Resource
Unknown
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