Performance of Composite Beams in Fire: Pre-test Analysis of Full-scale Experiments
Joseph Main, Fahim H. Sadek, Jonathan Weigand, Jian Jiang, Lisa Choe, Selvarajah Ramesh, Matthew Hoehler, John L. Gross
This paper presents results from pre-test analysis of a full-scale 42 ft (12.8 m) span composite beam with bolted angle connections, under uniform gravity loading simulated using six equally spaced concentrated loads, and subjected to a 4000 kW compartment fire followed by a period of cooling. This configuration corresponds to the first in a series of composite beam fire tests to be performed in the National Fire Research Laboratory, with varying steel gravity connection types and slab-edge fixities. The beam, connections, and composite slab are modeled using a reduced-order shell-element-based modeling approach that enables coupled thermal-structural analysis by using the same finite element mesh for the heat transfer and structural analyses. This approach includes (i) realistic fire-induced thermal loads, (ii) temperature-dependent thermal and mechanical material properties, (iii) layered shell elements for the framing members and connections, and (iv) a newly developed reduced-order modeling approach for the composite slab on steel deck.
Eighth Composite Construction in Steel and Concrete (CCVIII), 2017
July 23-26, 2017
Jackson Hole, WY, US
composite slab, Experiments, fire performance of structures, heat transfer, National Fire Research Laboratory, pre-test analysis
, Sadek, F.
, Weigand, J.
, Jiang, J.
, Choe, L.
, Ramesh, S.
, Hoehler, M.
and Gross, J.
Performance of Composite Beams in Fire: Pre-test Analysis of Full-scale Experiments, Eighth Composite Construction in Steel and Concrete (CCVIII), 2017, Jackson Hole, WY, US
(Accessed December 9, 2023)