Influence of rising the corners of a simply supported reinforced concrete slab on its reinforcement by numerical mehods

• Published in: Journal of physics. Conference series 2020-08, Vol.1614 (1), p.12001
• Main Authors: Vasiljev, A V, Perekal'skiy, O E, Vasiljeva, N A, Larionov, S G, Potapov, Y B
• Format: Article
• Language: English
• Subjects: Bending moments; Bends; Concrete slabs; Contours; Corners; Finite element method; Numerical methods; Physics; Prefabrication; Reinforced concrete; Reinforcement
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1614/1/012001

The article presents a method for calculating a simply supported slab with a supple support contour using a numerical method in a computational software package. The support contour of a simply supported slab is formed by groups of two nodal finite elements, which allow modeling a linear supple bond in the vertical direction. They take into account the possibility of changes in the design scheme due to subsidence of the walls. The suppleness of the contour of prefabricated elements is 1 mm without taking into account the bends of the corners of a simply supported slab. The forces and reinforcement of a simply supported square slab were calculated according to the proposed methodology with a calculation where the joints of the contour are set to move in the vertical direction. As a result, the bending moments in the middle of the span increase, and the torques in the corners of the slab decrease. The reinforcement of the upper area of the slab is not required. The reinforcement of the lower area of the slab is increased by the amount of released reinforcement from the upper area of the slab.