Material Performance Experiments Of Htrb700 Reinforcing Bar

The research shows that the increase of the strength of reinforcing bars can effectively improve the bearing capacity of the components, reduce the amount of reinforcing bars and decrease the difficulty of construction. At present, the yield strength of high-performance reinforcing bars developed abroad and applied in practical engineering is 400-900 MPa, while that in China has reached 700 MPa. As strain-rate sensitive materials, the strain-rate effect of reinforcing bars should be taken into account in the design of seismic buildings and explosion-resistant protective structures. In order to figure out the strain-rate effect of HIRB700, the properties of HRB400 and HTRB700 reinforcing bars are tested. Their performance mechanism and strain-rate response are studied respectively. Among them, the strain rate range of strain-rate effect experiments is 2.5x10(-4)-100 s(-1). The calculation formula is obtained after fitting and analyzing the experimental results, which provides information for the popularization and application of HTRB700 reinforcing bars with new high strength and high plasticity in seismic and explosion resistant structures.