Latest issueAbout New Types of Reinforcing Rolled Metal for Earthquake Engineering
Authors:
Tihonov Igor N.
Dr. Sci. (Engineering), Head of the Center №21 of NIIZhB named after A.A. Gvozdev of JSC RCC. Moscow, Russian Federation
Smirnova Lyubov N.,
Cand. Sci. (Engineering), Scientific secretary of JSC RCC. Moscow, Russian Federation
Alexander A. Bubis
Head of Structures Earthquake Resistance Research Center of TSNIISK named after V.A.Kucherenko of JSC RCC. Moscow, Russian Federation
Tikhonov Georgy I.
Design Engineer of the Center №21 of NIIZhB n.a. A.A. Gvozdev of JSC RCC. Moscow, Russian Federation
Safonov A.A.
head of RC «NITSstroy», L.L.C. «Institute VNIIzhelezobeton», Moscow, Russian Federation
Rubric: Theoretical and experimental studies
Key words: reinforcing bars, endurance, double-sided multi-row profile, deformability, beyond the stage of plastic deformation, strength, earthquake engineering, adhesion to concrete, cyclic dynamic loading
Annotation:
As a result of the release of GOST 34028-2016 «Reinforcing bars for reinforced concrete structures» the manufacturability of new kinds of reinforcing bars, taking into account the needs of different areas of construction were increased. The materials of the present study prove the ability of reinforcement with a multi-row (six-row and screw four-row) arrangement of transverse ribs on its surface to maintain adhesion with concrete even at the stage of exceeding the limit values of deformation. This factor, as well as high endurance at cyclic dynamic effects, possibility of connection using couplings of four-row screw reinforcing bars and anchoring it with nuts, expands the possibilities of using the new valves not only in earthquake engineering, but also in nuclear power, transport and other types of construction. The new reinforcing bars of domestic production are able to gain a leading position not only in the domestic but also in foreign construction markets.