1 I DESIGN FACTORS AND THE ECONOMICAL APPLICATION OF SPHERICAL TYPE VOIDS IN RC SLABS Kivanc Taskin 1 *, Kerem Peker 2 1 Anadolu University, Engineering Faculty, Civil Engineering Department, Iki Eylul Campus, 26555 Eskişehir, Turkey 2 ERDEMLI Engineering and Consulting Co. Ltd., Spor Caddesi , Babaefendi Sokak , Ufuk Palas 3/1, 34357, Beşiktaş / İstanbul,Turkey Abstract In a general way, the slab was designed only to resist vertical load. When span of the building is increasing, deflection of slab is more important. Therefore, the slab thickness is on the increase. The increasing of slab thickness makes slab heavier, and it leads to increase column and base size. Thus it makes building consume more material. To avoid these disadvantages which were caused by increasing of self-weight of slabs, the biaxial hollow slab system (void slab) was suggested. This slab system could optimize the size of vertical members like walls and columns by lightening the weight of slabs. The behaviors of biaxial hollow slab are influenced by the shape of void and cage. Long span flat slab systems with internal void formers have been used in Europe for a decade now. Voided Slab is a bi-axial reinforced concrete fat slab system, with a grid of internal void formers. The main advantage is the possibility of long spans due to the significant reduction in own weight, as well as the fast construction sequence with the use of flat lab formwork systems. This research is based on the modeling of void slabs using different structural analysis program (SAP 2000 etc) due to TS 500 (Requirements for Design and Construction of Reinforced Concrete Structures-Turkish Standard). Also this study scrutinizes the economy of various slab systems (waffle, mushroom, rib etc.), exposed to different load intensities and practical span ranges. Key words Spherical void formers; concrete floor systems; modelling; economy; span ranges; structural analysis *Corresponding author: Tel.: +90-222-3213550, Fax: +90-222-3239501 E-mail address: [email protected]
DESIGN FACTORS AND THE ECONOMICAL APPLICATION OF SPHERICAL TYPE VOIDS IN RC SLABS
Jun 18, 2023
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