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Abstract
The study took five samples of screw-thread steel III, i.e. HRB400 steel bar of different diameters: 10mm, 12mm, 16mm, 20mm and 25mm; and conducted contrast experiments of their mechanical properties and components. The 600 sets of data collected from the experiments were processed by multivariate regression analysis of mechanical properties and components by diameter with MATLAB. The result showed that differentHRB400 screw-thread steel bars have different components with the mechanical properties meeting the standard of GB1499.2-2007 [1] part 2 steel for reinforced concrete hot rolled ribbed steel bar, which has a guidance function to scientific research in universities and production in enterprises.
Highlights
With the accelerated urbanization process of our country, building steel becomes an important guarantee of structure safety
There is a strong relationship between the mechanical properties of HRB400 steel bar and its components
On condition that the mechanical properties meet the standard of GB1499.2-2007 [1]part 2 steel for reinforced concrete hot rolled ribbed steel bar
Summary
With the accelerated urbanization process of our country, building steel becomes an important guarantee of structure safety. The main high-tensile steel bar used in our country is HRB400 steel. The HRB400 steel bar is one kind of screw-thread steel ċ and hot rolled ribbed steel bar. HRB400 screw-thread steel is high-tensile aseismic steel which has good extension, with a price higher than screw-thread steelĉ,Ċ. There is a strong relationship between the mechanical properties of HRB400 steel bar (yield points, strength of extension and extensibility) and its components (carbon, manganese, phosphorus, sulfur, oxygen, silicon and nitrogen). On condition that the mechanical properties meet the standard of GB1499.2-2007 [1]part 2 steel for reinforced concrete hot rolled ribbed steel bar,. The study analyzed the components of HRB400 screw-thread steel of different diameters.The HRB400 screw-thread steel in the study is the hot charging minus deviation bars bought by school
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