TY - GEN
T1 - Effects of composite slab on shear strength of steel plate girders
AU - Wang, Peter Y.
AU - Moreyra Garlock, Maria E.
N1 - Publisher Copyright:
© 2020, American Institute of Steel Construction, AISC. All rights reserved.
PY - 2017
Y1 - 2017
N2 - Steel plate girder bridges are often vulnerable to shear buckling at elevated fire temperatures due to their slender webs. A composite slab could be effective in increasing the shear capacity in fire, but a measure of this slab effectiveness has not been done to-date. Using nonlinear finite element models, this paper evaluates the amount of additional shear strength that a composite slab can provide to a steel plate girder under fire. The elastic shear buckling load (Vcr), (ultimate) shear post-buckling load (Vu), and stiffness are evaluated for 16 models with varying parameters: Composite slab (or not), web slenderness ratio, and stiffener spacing. The steel girders are subject to a temperature of 700°C. Results show that the composite slab increases Vcr on the order of 10% and Vu on the order of 30% compared to the non-composite models. The slab is most effective at increasing Vcr and Vu for larger stiffener spacings.
AB - Steel plate girder bridges are often vulnerable to shear buckling at elevated fire temperatures due to their slender webs. A composite slab could be effective in increasing the shear capacity in fire, but a measure of this slab effectiveness has not been done to-date. Using nonlinear finite element models, this paper evaluates the amount of additional shear strength that a composite slab can provide to a steel plate girder under fire. The elastic shear buckling load (Vcr), (ultimate) shear post-buckling load (Vu), and stiffness are evaluated for 16 models with varying parameters: Composite slab (or not), web slenderness ratio, and stiffener spacing. The steel girders are subject to a temperature of 700°C. Results show that the composite slab increases Vcr on the order of 10% and Vu on the order of 30% compared to the non-composite models. The slab is most effective at increasing Vcr and Vu for larger stiffener spacings.
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M3 - Conference contribution
AN - SCOPUS:85089242896
SN - 9781564240620
T3 - Composite Construction in Steel and Concrete VIII - Proceedings of the 8th International Conference on Composite Construction in Steel and Concrete, 2017
SP - 358
EP - 368
BT - Composite Construction in Steel and Concrete VIII - Proceedings of the 8th International Conference on Composite Construction in Steel and Concrete, 2017
A2 - Rassati, Gian Andrea
A2 - Hajjar, Jerome F.
A2 - Leon, Roberto T.
PB - American Institute of Steel Construction, AISC
T2 - 8th International Conference on Composite Construction in Steel and Concrete, 2017
Y2 - 29 July 2017 through 2 August 2017
ER -