Nonlinear FE analysis of the ultimate behavior of steel castellated beams

Soltani, M.R.; Bouchaïr, Abdelhamid; Mimoune, Mostefa

doi:10.1016/j.jcsr.2011.10.016

Cited by 101 publications

(57 citation statements)

References 13 publications

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“…The important advantage of the steel beam castellation process is that the designer can increase the depth of a beam to raise its strength without adding steel. The resulting castellated beam is approximately 50% deeper and much stronger than the original unaltered beam [2][3][4][5].…”

Section: Introductionmentioning

confidence: 93%

“…Due to the presence of holes in the web, the structural behavior of castellated steel beam is di erent from that of the solid web beams. At present, there is not a prescribed design method due to the complexity of the behavior of castellated beams and their associated modes of failure [2]. The strength of a beam with various web openings is determined by considering the interaction of the exure and shear at the openings.…”

Section: Design Of Castellated Beamsmentioning

confidence: 99%

“…The rst one is the vertical shear capacity and the upper and lower tees should undergo it. The sum of the shear capacities of the upper and lower tees is checked using the following equations [2,13]:…”

Section: Beam Shear Capacitymentioning

confidence: 99%

“…Web post with too short mid-depth welded joints may fail prematurely when horizontal shear exceeds the yield strength. The horizontal shear capacity is checked using the following equations [2,13]: …”

Section: Beam Shear Capacitymentioning

confidence: 99%

“…Thus, the overall buckling of the castellated beam is omitted from the design considerations. The web post buckling capacity in castellated beam is given by [2,13]: …”

Section: Flexural and Buckling Strength Of Web Postmentioning

confidence: 99%

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A hybrid optimization algorithm for the optimal design of laterally-supported castellated beams

Kaveh

Shokohi

2016

Scientia Iranica

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Abstract. In this paper, a hybrid method is developed for optimum design of castellated beams by combining two meta-heuristic algorithms, namely the Colliding Bodies Optimization (CBO) and Particle Swarm Optimization (PSO). In this hybrid algorithm (CBO-PSO), positive features of PSO are added to the CBO. Two common types of laterally supported castellated beams are considered to be the design problems: beams with hexagonal openings and beams with circular openings. These beams have found widespread usage in buildings because of great savings in materials and construction costs. Here, the minimum cost is taken as the design objective function and the new hybrid method is utilized for obtaining the solution of some benchmark problems. Comparison of the results of the CBO-PSO with those of some other meta-heuristics demonstrates the capability of the presented optimization algorithm. For most of the examples, the results obtained by CBO-PSO have less cost than those of the other considered methods. It is also concluded that the beams with hexagonal openings require smaller amount of steel, hence being superior to the beams with cellular openings.

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Section: Introductionmentioning

confidence: 93%

Section: Design Of Castellated Beamsmentioning

confidence: 99%

Section: Beam Shear Capacitymentioning

confidence: 99%

Section: Beam Shear Capacitymentioning

confidence: 99%

“…Thus, the overall buckling of the castellated beam is omitted from the design considerations. The web post buckling capacity in castellated beam is given by [2,13]: …”

Section: Flexural and Buckling Strength Of Web Postmentioning

confidence: 99%

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A hybrid optimization algorithm for the optimal design of laterally-supported castellated beams

Kaveh

Shokohi

2016

Scientia Iranica

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Development of a new steel section for reinforcing of steel‐reinforced concrete‐filled steel tubular columns

Farajpourbonab

2019

Structural Concrete

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This article presents an experimental study to investigate the strength of steel‐reinforced concrete‐filled steel tubular (SRCFT) columns reinforced with castellated and common cruciform steel columns under compressive axial load. SRCFT columns are constructed by embedding a reinforcing steel section into the concrete‐filled steel tube (CFT) column, and in this article, a new structural steel shape, namely castellated cruciform steel section, for reinforcing of SRCFT columns was designed. Investigation of SRCFT columns reinforced with castellated steel section indicates evidence of higher strength and applicability in comparison with common reinforcing steel section. A numerical investigation was also carried out with finite element analysis to study the structural behavior of SRCFT columns under lateral cyclic loading. A reasonable agreement was obtained between the results of finite element analysis and the experimental test under axial and lateral cyclic loading. The variables studied included the effect of various types of reinforcing steel sections, flange boost effects of castellated reinforcing steel section, length of columns, compressive strength of concrete, and the tube thickness. As a result, it was revealed that the SRCFT specimen reinforced with castellated cruciform steel sections was effective in enhancing the seismic performance toward more stable hysteresis curves, lower strength degradation, and higher energy dissipation as compared with SRCFT specimens reinforced with common cruciform steel sections.

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Strength Optimization of Litzka Type Welded Beams by Varying Angle of Castellations

Swathy¹,

Joseph²

2022

Lecture Notes in Civil Engineering

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Nonlinear FE analysis of the ultimate behavior of steel castellated beams

Cited by 101 publications

References 13 publications

A hybrid optimization algorithm for the optimal design of laterally-supported castellated beams

A hybrid optimization algorithm for the optimal design of laterally-supported castellated beams

Development of a new steel section for reinforcing of steel‐reinforced concrete‐filled steel tubular columns

Strength Optimization of Litzka Type Welded Beams by Varying Angle of Castellations

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