On the definition deflections of monolithic slabs with the mixed reinforcing at the stage of limit equilibrium

Vitaliy Kuznetsov,Yulia Shaposhnikova,T Maltseva

doi:10.1051/matecconf/20167304015

Vitaliy Kuznetsov, Yulia Shaposhnikova + Show 1 more

Open Access

https://doi.org/10.1051/matecconf/20167304015

Copy DOI

Abstract

The article considers innovative materials and structures for flat monolithic slabs. Overlapping mixed diagonal reinforcement where high strength is used as prestressing reinforcement in a flexible sheath type “Monostrend”. The article discusses the theoretical solution to determine the deflection of a monolithic beamless slab without capitals in the process of limiting equilibrium. The formula based on the value of the limiting deflection cell, reinforcement class and plate thickness. Shows a plot of marginal values of deflections of different thickness slabs with reinforcement A500, for three cells to span 6, 7 and 9 m. These data set the initial stress in high-strength reinforcement and stress as a result acquired deflection in the slab floors with mixed diagonal reinforcement.

Highlights

More attention is paid to monolithic slabs
We present, developed by the authors, the theoretical solution to determine the deflection of a monolithic slab beamless floors without capitals in the stage of limit equilibrium [2, 3, 4, 5, 6]
The curvature of element 1/ρ for limiting equilibrium depends on two variable parameters: the value of the physical limit of elasticity of reinforcement Rs and the section height h0

Summary

Introduction

Frame-monolithic is one of the most popular types of construction [1]. To extend the range of span and loads for buildings of this type must be a more complete study of the work of monolithic slabs. We present, developed by the authors, the theoretical solution to determine the deflection of a monolithic slab beamless floors without capitals in the stage of limit equilibrium [2, 3, 4, 5, 6]. Knowing the values of deflections beamless floors in the stage of limit equilibrium necessary in the calculations of overlap strength while using ordinary and high-strength reinforcement [7] to prevent constriction reinforcement and maximize its strength characteristics [8, 9, 10, 11]. Particular importance is the purpose of prestressing armature levels in the case of highstrength armature, such as "monostrend", without adhesion to the concrete, as damage or break a wire rope is not localized in the concrete, and leads to overstress the rest of the wires, a jumplike increase of deflections, excessive disclosure of cracks and destruction of all overlap [13, 14, 15, 16]

Experimental section

Results section

Conclusions