Genetic algorithm optimization of precast hollow core slabs

Sgambi, Luca; Gkoumas, Konstantinos; Bontempi, Franco

doi:10.12989/cac.2014.13.3.389

Cited by 16 publications

(10 citation statements)

References 79 publications

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“…In the last three decades, PPHC units have been extensively studied, experimentally [2,3,[26][27][28] and numerically [1,7,25,29,30], to understand and calculate the shear strength of these members, but no consensus has been reached on this issue [30,31]. In addition, the current design methods for shear resistance are derived from experimental results [32] and elastic theories [33,34] that are not usually directly related to the behavior at the ultimate limit state, which may be affected by many sources of nonlinearity and complex thermo-hygro-mechanical effects [35].…”

Section: Review Of Current Design Methods Against Web-shear Failure Mmentioning

confidence: 99%

“…In addition, the current design methods for shear resistance are derived from experimental results [32] and elastic theories [33,34] that are not usually directly related to the behavior at the ultimate limit state, which may be affected by many sources of nonlinearity and complex thermo-hygro-mechanical effects [35]. Recently, Sgambi et al [1] have shown the mismatch between EN 1168 [34] and numerical simulations that were based on classical principles of nonlinear fracture mechanics [36][37][38][39][40][41][42]. Similarly, Araujo et al [30] have performed nonlinear FE modeling on PPHC slabs to show the inaccuracy of CSA [43], when applied for these elements, and to propose an alternative analytical design methodology, based on modified compression field theory (MCFT) [44] and concepts of Eurocode 2 (EC2) [33].…”

Section: Review Of Current Design Methods Against Web-shear Failure Mmentioning

confidence: 99%

“…Due to their versatility, their multipurpose potential and their low cost [1][2][3], these precast products have found wide application in building construction, in combination with conventional precast prestressed reinforced concrete [4,5] or alternative composite steel [6,7] beams.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical web-shear strength assessment of precast prestressed hollow core slab units

Brunesi

Nascimbene

2015

Engineering Structures

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Section: Review Of Current Design Methods Against Web-shear Failure Mmentioning

confidence: 99%

Section: Review Of Current Design Methods Against Web-shear Failure Mmentioning

confidence: 99%

See 1 more Smart Citation

Numerical web-shear strength assessment of precast prestressed hollow core slab units

Brunesi

Nascimbene

2015

Engineering Structures

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“…Hollow-Core Slabs are one of the common types of ceilings used in the prefabricated buildings industry, which are calculated and constructed based on gravity loads (Sgambi et al, 2014). These components are manufactured in a hall equipped with computer control systems.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Behavior of Single-Sided Protruding Slabs

Salehi¹,

Akbarpour²

2018

American Journal of Engineering and Applied Sciences

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Due to the high seismicity of our regions, engineers have always sought to provide various solutions to improve the performance of buildings and consequences control of powerful earthquakes. Building Lighting is one of the methods used to reduce earthquake forces. The use of prefabricated slabs is one of the ways to reduce the dead load of a building. In this study, four types of prefabricated slabs with different thicknesses under a certain dead load have been modeled in ABAQUS Software. By analyzing nonlinear static analysis, slab capacity and nonlinear behavior are evaluated. The results show that by increasing the thickness of the slab, the shear strength of the slab increases. The results also show that the ultimate strength has been reduced in a hollow slab with polygon holes (non-circular).

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“…Prestressed reinforcement improves the serviceability performance of HC slabs compared to plain slabs (those without voids), increasing the cracking moment as well as the load-bearing capacity. Span lengths of up to 16 m and high load levels can be achieved with HC slab floor systems [2,3]. HC slabs have been made for several years.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Precast Prestressed Hollow Core Slabs With Openings: Experimental Study

khouly

Meleka

Tayel

et al. 2017

ERJ. Engineering Research Journal

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A hollow core slab is a precast prestressed concrete member with longitudinal hollow cores that reduce its self-weight. This paper presents the effects of openings on flexural and shear behavior of precast prestressed hollow core slabs. Three full-scale hollow core slabs of dimensions 4100x1200x160 mm were tested. One slab without opening is considered as a control specimen. The second slab with a central opening with dimensions 250x250 mm at mid of span was tested to investigate the effect of this opening on the flexure capacity. The third slab has an opening at mid of one-third of span was tested to investigate the effect of the opening on shear capacity of hollow core slab. All specimens were tested under four loading points until failure. Test results showed that the opening at mid-span decreases the flexure capacity of the slab. The failure load of the slab in this case is decreased by about 11.40%. The failure modes of the hollow core slab with a central opening as well as the control slab were ductile. The presence of the opening at maximum shear affect the slab behavior badly. It caused a sudden failure. The reduction of the failure load was about 21%.

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Genetic algorithm optimization of precast hollow core slabs

Cited by 16 publications

References 79 publications

Numerical web-shear strength assessment of precast prestressed hollow core slab units

Numerical web-shear strength assessment of precast prestressed hollow core slab units

Numerical Study of the Behavior of Single-Sided Protruding Slabs

Behavior of Precast Prestressed Hollow Core Slabs With Openings: Experimental Study

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