Survey of the Deflection of Reinforced Concrete Slab in Considering the Hardness of Boundary Beams

Abstract

ABSTRACT
Features a bending working state of the slab structure as the deflection. When calculating the reinforced concrete structure according to the second-limit state, along with the crack width, the level of its deflection needs to be tightly controlled. The deflection of the slab when the allowable limit is exceeded will directly affect the aesthetics and normal work function of the work, causing negative feelings for human senses; specially reduce durability and the safety of the slab structure. The process of calculating the reinforced concrete slab, the deflection is controlled in two basic ways: a) to determine the calculating deflection of the floor and compare to the limit value according to design standards; b) Analysis of deflection control through minimum thickness (hmin) of
the reinforced concrete slab. In this article the author presents methods of survey the deflection of reinforced concrete slab according to the hardness ratio between the slab and the edge beam on the basis of analysis by the SAFE Software 2000 Model in there the reinforced concrete slab has different size and boundary conditions.

Keywords: reinforced concrete slab, deflection, second-limit state, controlling the deflection