Book ChapterDOI
Experimental and analytical investigations on two-way flexural capacity of biaxial voided slab
R. Sagadevan,B. N. Rao +1 more
- Vol. 81, pp 233-247
TLDR
In this paper, the authors explored the possibility of biaxial voided slabs as a substitute for conventional reinforced concrete slabs and found that the flexural capacity of the two-way slab with voids is the same as a solid slab, with a minor reduction in its flexural stiffness.Abstract:
The rise in urbanisation and subsequent demand for infrastructure accelerates the use of concrete as a construction material. Conventional design practices need large member sizes to fulfil architectural and structural requirements. Hence, the size of structural members such as slab, beam, column, etc., significantly affects the quantity of concrete used. This calls for the need to optimise the use of concrete to reduce the self-weight of structure. The present study explores the possibility of biaxial voided slabs as a substitute for conventional reinforced concrete slabs. A typical biaxial voided slab eliminates concrete from the middle of the floor slab by introducing voids and it leads to a significant reduction in self-weight, about 30–50%. However, these voids reduce the sectional area of slab concrete, which leads to a reduction in flexural stiffness and shear resistance. The behaviour of the biaxial voided slab subjected to two-way flexure is discussed. Experiments are carried out to determine two-way flexural behaviour of the two-way slab with sphere shape voids by adopting 16-point loads. The obtained experimental results of strength and serviceability criteria are compared for slabs with and without voids. It is found that the flexural capacity of the two-way slab with biaxial voids is the same as a solid slab, with a minor reduction in its flexural stiffness. Furthermore, an analytical study is carried out based on the yield line analysis to predict the flexural capacity of the slab and compared with experimental results. It is evidenced that 16-point load is equivalent to 89% of uniformly distributed load and the flexural capacity of void slabs can be predicted by using yield line analysis as used in the conventional solid slab.read more
Citations
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Journal ArticleDOI
Experimental and analytical investigation of punching shear capacity of biaxial voided slabs
R. Sagadevan,B. N. Rao +1 more
TL;DR: In this paper, the applicability of conventional methods for solid slabs in the design standards, such as ACI 318 (2014), EN 1992-1-1 (2004) and IS 456 (2000), to predict the punching shear capacity of the voided slab is examined.
Journal ArticleDOI
Statistical Analysis of Influencing Design Parameters for Two Way Slabs
TL;DR: In this article, a comprehensive statistical analysis of factors that influence the design parameters of slab is presented, and it is found that low correlation between that there is high but negative correlation found between Effective Depth Required and spacing_x and Inputs variable is able to explain well only two variables Effective_depth require and Spacing_x.
Journal ArticleDOI
Numerical Analysis on Different Void Former On ANSYS
Nikita Jain,Asif Hussain +1 more
Journal ArticleDOI
Structural Behaviour of Voided Flat Slab With Various Void Ratios Under Vertical Loading
TL;DR: In this article, the effect of the position of voids in the voided flat slabs has been studied and it is concluded that the concrete has no role at below the neutral axis of structural void cross-section for all specimens including controlled specimens.
References
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Biaxial hollow slab with innovative types of voids
TL;DR: In this article, the advantages of a new kind of hollow slab over a solid slab were summed up and the most famous of present examples of the new technology are also demonstrated, mainly by manufacturer companies, are supported by regulations and local/international codes.
Journal ArticleDOI
A note on a possible basis for a new method of ultimate load design of reinforced concrete slabs
TL;DR: Because of tensile membrane action, reinforced concrete slabs can sustain loads far in excess of the ultimate load calculated by the yield-line theory, and a method of calculating the corresponding load-carrying capacity is proposed.
Journal ArticleDOI
Two-Way Flexural Behavior of Donut-Type Voided Slabs
TL;DR: In this paper, the structural properties of two-way voided slabs with segmented voids were investigated with a 12-point bending test focused on global behaviors, including its load bearing capacity, flexural stiffness, ductility, deflection, and load distribution.
Journal ArticleDOI
Flexural capacity and stiffness of monolithic biaxial hollow slabs
TL;DR: In this paper, the authors presented a research on flexural behaviour of hollow monolithic reinforced concrete slabs and analyzed their flexural capacity and stiffness using DIANA software, which can be applied for analyzing the stress state of the examined structures.
Flexural capacities of reinforced concrete two-way bubbledeck slabs of plastic spherical voids
TL;DR: In this article, the authors present the flexural capacities of R.C two way hollow slabs of plastic spherical voids, also known as BubbleDeck slab system, and verify their flexural behavior such as ultimate load, deflection, concrete compressive strain and crack pattern.
Related Papers (5)
Structural Capacities of Spherically Voided Biaxial Slab (SVBS)
Wondwosen Ali,Girum S. Urgessa +1 more
Experimental and analytical investigation of punching shear capacity of biaxial voided slabs
R. Sagadevan,B. N. Rao +1 more