Hot-rolled ribbed steel bar

Abstract

The invention discloses a hot-rolled ribbed steel bar. The hot-rolled ribbed steel bar comprises a steel bar body and a plurality of transverse ribs, wherein the maximum dimension of the cross sectionof the steel bar body is d, the maximum dimension of the transverse ribs protruding from the steel bar body is h, the width of the transverse ribs protruding from the top of the steel bar body is defined as the rib top width b, and the distance between every two adjacent transverse ribs in the length direction of the steel bar body is defined as the rib spacing L; the transverse ribs are dividedinto three groups and are evenly distributed on the outer periphery of the steel bar body; the part, 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; the maximum dimension h of the transverse ribs protruding from the steel bar body ranges from 0.03 d to 0.2 d; the value range of rib top width b is 0.04d to 0.15d; and the value range of the rib spacing L ranges from 0.3d to 3d.The hot-rolled ribbed steel bar has the beneficial effects of eliminating structures with cracking risks when combined with concrete, therebyimproving the firmness of reinforced concrete composed of steel bars.

Description

technical field [0001] The invention relates to a steel bar, in particular to a hot-rolled ribbed steel bar. 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 spaced ribs (called deformed steel bars) to improve the mechanical engagement between the concrete and the steel bar. However, this is still not enough to transmit the steel bar and the steel ...

AI Technical Summary

Problems solved by technology

The steel bars currently used in the market cannot achieve higher strength due to unreasonable structures. When

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