Steel bar applicable to concrete

Abstract

The invention discloses a steel bar applicable to concrete. The steel bar comprises a steel bar body and a plurality of transverse ribs, wherein the transverse ribs protrude out of the steel bar body; the maximum size of the cross section of the steel bar body is d; the maximum size of the transverse ribs protruding out of the steel bar body is h and the width of the tops of the transverse ribs protruding out of the steel bar body is defined to be rib top width b; the distance between two adjacent transverse ribs in the length direction of the steel bar body is defined to be rib distance L; the transverse ribs are divided into two groups which are arranged at two sides of the steel bar body respectively; a part, located between the two groups of transverse ribs, of the cross section of the steel bar body is a smooth curve or / and a straight line; a value range of the rib top width b is 0.05d to 0.15d and a value range of the rib distance L is 0.3d to 3d. The steel bar applicable to the concrete, disclosed by the invention, has the beneficial effects that shape and size parameters of the steel bar are improved so that the steel bar body has a relatively smooth external profile and a structure which has cracking risks when being combined with the concrete is eliminated, so that the firm degree of steel bar concrete composed of the steel bar is improved.

Description

technical field [0001] The invention relates to a steel bar, in particular to a steel bar suitable for concrete. Background technique [0002] Reinforced concrete is often referred to as reinforced concrete in engineering. It refers to a composite material that works together to improve the mechanical properties of concrete by adding steel mesh, steel plates or fibers to the concrete. [0003] The reason why reinforced concrete can work together is determined by its own material properties. First of all, steel bars and concrete have approximately the same linear expansion coefficient, and excessive stress will not be generated due to different environments. Secondly, there is a good bond between the steel bar and the concrete. Sometimes the surface of the steel bar is also processed into ribs with intervals (called deformed steel bar) to improve the mechanical engagement between the concrete and the steel bar. However, this is still not enough to transmit the steel bar and...

AI Technical Summary

Problems solved by technology

The bonding coefficient of the steel bars used in the market is usually not more than 1, and such a bonding coefficient can only be said to meet the national standard, but it cannot achieve higher firm strength. When encountering disasters such as earthquakes and typhoons, Easy to release dangers such as fracture and collapse

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