The floor beams of steel buildings, cold-formed steel

\r\nfloor joists in particular, often require large web openings, which may

\r\naffect their shear capacities. A cost effective way to mitigate the

\r\ndetrimental effects of such openings is to weld\/fasten reinforcements.

\r\nA difficulty associated with an experimental investigation to establish

\r\nsuitable reinforcement schemes for openings in shear zone is that

\r\nmoment always coexists with the shear, and thus, it is impossible to

\r\ncreate pure shear state in experiments, resulting in moment

\r\ninfluenced results. However, Finite Element Method (FEM) based

\r\nanalysis can be conveniently used to investigate the pure shear

\r\nbehaviour of webs including webs with reinforced openings. This

\r\npaper presents the details associated with the finite element analysis

\r\nof thick\/thin-plates (representing the web of hot-rolled steel beam,

\r\nand the web of a cold-formed steel member) having a large

\r\nreinforced opening. The study considered simply-supported

\r\nrectangular plates subjected to in-plane shear loadings until failure

\r\n(including post-buckling behaviour). The plate was modelled using

\r\ngeometrically non-linear quadrilateral shell elements, and non-linear

\r\nstress-strain relationship based on experiments. Total Langrangian

\r\nwith large displacement\/small strain formulation was used for such

\r\nanalyses. The model also considered the initial geometric

\r\nimperfections. This study considered three reinforcement schemes,

\r\nnamely, flat, lip, and angle reinforcements. This paper discusses the

\r\nmodelling considerations and presents the results associated with the

\r\nvarious reinforcement schemes under consideration.<\/p>\r\n",
"references": null,
"publisher": "World Academy of Science, Engineering and Technology",
"index": "International Science Index 108, 2015"
}