ASSESSMENT OF STRUCTURAL SAFETY IN STRENGTH AND DURABILITY OF THE CORRUGATED CONCRETE SLAB

Emergency cases in buildings are caused by mistakes and imperfections of design documentation, deviations from design documentation and defects of construction. Reinforced concrete structures are the most prevalent type of structures in building and construction. It’s necessary to consider that deformability and crack resistance requirements are the main factors of design of such structures. Correct assessment of deformability and crack resistance depends on physical nonlinearity and creep of concrete and change of bending resistance of a section. The results of the assessment of technical condition of the corrugated concrete slab with significant deflections are given in the article. During the assessment it was determined, that in the course of construction the slab and the beams were built with deviations from design, middle beams had numerous normal and shearing cracks, outside beams had cracks caused by torque and bending moment. Calculations of the slab ender reveal that its strength and deformability are not enough to carry the loadings. Further exploitation of the floor slab will cause its failure. Economical comparison of various types of floor slabs with reference to the given building is done in the article.

defects, corrugated slab, cracks, torque and bending moment, deflection, durability