Efficient Reinforcement for Reinforced Concrete Structures of Buildings Designed With Due Regard for Impact of Special Loads

The main design criterion is to prevent progressive collapse of structures in the first place to save people’s lives. When designing, studies and account of strength and deformability characteristics of reinforcement and concrete structures at stages close to the destruction as well as development and studies of new types of reinforcing bars ensuring the high strength and power intensity of adhesion between concrete and reinforcement at the stage of plastic deformation of tensile reinforcement on the anchorage and in the most loaded cross-sections of elements are very relevant. The requirements of normative documents of the Russian Federation and Eurocode 2 «Design of concrete structures» for mechanical properties of reinforcement ensuring greatly the strength of reinforced concrete structures are mapped. The principal differences showing that the requirements of Eurocode 2 deserve serious attention, as they are more specific in the evaluation of strength and deformation characteristic of reinforcement steels. Basic provisions to guide when developing geometric parameters of efficient types of the deformed reinforcement are formulated. It is shown that the new profile of reinforcement with the conventional name “sickle-shaped four-sided” makes it possible to significantly improve the strength and rigidity of adhesion between concrete and reinforcement due to the increase in bearing and shear resistance of zigzag inter- costal concrete keys of continuous length as well as due to the efficient operation of grains of coarse aggregate introduced in them

I.N. TIKHONOV¹, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
V.Z. MESHKOV¹, Candidate of Sciences (Engineering);
A.N. ZVEZDOV ², Doctor of Sciences (Engineering),
I.P. SAVRASOV² , Candidate of Sciences (Engineering) 

¹ NIIZHB named after A.A. Gvozdev, JSC “RC of Construction”) (6, 2nd Institutskaya Street, 109428, Moscow, Russian Federation) 
² JSC Research Center of Construction (JSC “RC of Construction”) (6, 2nd Institutskaya Street, 109428, Moscow, Russian Federation)

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