Results 101 to 110 of about 155 (139)

Numerical Modeling of Composite Castellated Beams

Composite Construction in Steel and Concrete VI, 2011
In modern composite structures, higher steel grades are used for structural steel profiles in order to increase span capacity without an unnecessary increase in the composite floor depth. This tendency results in beams that are more vulnerable to the failure modes that involve either web LSB (local shear buckling) and/or compression flange RDB ...
Marian A. Gizejowski, Wael A. Salah
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Castellated Beam Web Buckling in Shear

Journal of Structural Engineering, 1998
Tests of four castellated beams are described, in which the buckling of the web-post between openings was the focus of interest. Evidence of web-post buckling was observed in all test beams, although one also underwent lateral displacements. Elastic finite-element analysis was used to predict the buckling loads.
Richard Redwood, Sevak Demirdjian
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Bracing requirements for inelastic castellated beams

Journal of Constructional Steel Research, 2005
Lateral–torsional buckling can be avoided by properly spaced and designed lateral bracing. Bracings are usually assumed to be elastic, and so may be characterized by their elastic stiffnesses. It is well known that an elastic lateral brace restricts partially the lateral buckling of slender beams and increases the elastic buckling moment.
Amin Mohebkhah, Hossein Showkati
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Stability of castellated beam webs

1999
Redwood, R. G. (Advisor)
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Castellated Beams - New Developments

Engineering Journal, 1964
"Castellated beam" is a name commonly used for a type of expanded beam. It is made by expanding a standard rolled shape in a manner which creates a regular pattern of holes in the web. The name is derived from this pattern of web holes, because castellated means "built like a castle, having battlements, or regular holes in the walls, like a castle ...
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Behavior of composite castellated beams

1997
While the study of non-composite castellated beams have received much attention, very little work has been done on composite castellated beams. The effect of the composite concrete slab is to significantly increase the flexural resistance of a steel section; it is however uncertain what effect this will have on the shear resistance.
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Behaviour of composite castellated beams

Progress in Structural Engineering and Materials, 2000
The effect of composite action on the behaviour of composite castellated beams is described by comparison with that of non-composite beams. It is demonstrated that enhancement of both flexural and shearing resistances can be expected, but that the improved shearing resistance can only be realised if certain conditions are met. The role of partial shear
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Castellated Beam Deflections Using Substructuring

Journal of the Structural Division, 1977
Several approximate methods are presently available for calculating deflections in castellated steel beams, yet, none is very accurate. Using Pippard.s approximate method of analysis of open-panel structures, Gardner was able to predict deflection to within 5% or better in several simply supported castellated beams; the method, however, involves ...
Metro M. Hrabok, Mahbub U. Hosain
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Reliability Analysis of Litzka Castellated Beams

Ibero-Latin American Congress on Computational Methods in Engineering (CILAMCE)
This paper presents a safety evaluation of Litzka castellated beams, based on calculation models proposed in the technical literature. It is noteworthy that there are currently no applicable Brazilian standards or official design criteria for this type of structure.
null Washington Batista Vieira, null André Brandão, null Giovanne de Lana Santana   +2 more
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Rotational capacity of castellated steel beams

The Structural Design of Tall and Special Buildings, 2012
SUMMARYThis paper numerically studies the behavior of castellated beams with two simply supported ends under moment gradient loading and investigates the effect of beam and braced lengths on rotational capacity of castellated beams. To assure the ability of numerical models in predicting the complex behavior (especially at the location of opening) as ...
Amir Saedi Daryan, Mohammadreza Sadri, Hamid Saberi, Vahid Saberi, Ahmad Baleh Moghadas, Mohammadjavad Karimlu   +5 more
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