Stability of previously compressed reinforcement in concrete beams
Abstract
Stability of previously compressed reinforcement in concrete beams
Incoming article date: 07.11.2016Preliminary tensile steel bars, stacked in the tension zone of reinforced concrete structures, allows significant savings. Research carried out in recent decades, many scientists in the Russian Federation and abroad, show that the reinforcement in the compressed zone, subjected to preliminary compression, and is able to give a significant economic impact. This question has not been investigated. There is no justification for such a common attachment to the transverse reinforcement, especially when you consider that they work only in the short period of hardening concrete (28 days). It may be that there are extra expenses expensive metal, time and labor. These reasons impel to consider in order to create a mathematical model of this problem from the standpoint of structural mechanics and its decision.
Keywords: The stability, critical force, differential equations, mathematical model, mnogoprolёtny rod, reinforced concrete beam, the hinge bearing, pitch bearing, high-strength reinforcement, tension, compression, pre-compression.