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High-strength steel bar and method for controlling minimum reinforcement ratio of concrete plate flexural member through high-strength steel bars
The invention discloses a high-strength steel bar. The high-strength steel bar comprises 0.18-0.28% of C, 0.45-0.85% of Si, 1.35-1.65% of Mn, 0.09-0.26% of combined elements of V+Ti+Nb, 0.01-0.06% of Cr, 0.01-0.06% of Ni, 0-0.05% of Cu, 0-0.01% of Mo, 0.025% of P or less, 0.025% of S or less, 0.005-0.015% of N and the balance Fe and unavoidable impurities. The yield strength and tensile strength are improved, the plasticity is not lowered, and the yield strength can reach 600 MPa or more, so that when the high-strength steel bar is applied to a concrete plate flexural member, the minimum reinforcement ratio of the concrete plate flexural member is set as the larger value between 0.15 and 45ft/fy.
High-strength steel bar and method for controlling minimum reinforcement ratio of concrete plate flexural member through high-strength steel bars
The invention discloses a high-strength steel bar. The high-strength steel bar comprises 0.18-0.28% of C, 0.45-0.85% of Si, 1.35-1.65% of Mn, 0.09-0.26% of combined elements of V+Ti+Nb, 0.01-0.06% of Cr, 0.01-0.06% of Ni, 0-0.05% of Cu, 0-0.01% of Mo, 0.025% of P or less, 0.025% of S or less, 0.005-0.015% of N and the balance Fe and unavoidable impurities. The yield strength and tensile strength are improved, the plasticity is not lowered, and the yield strength can reach 600 MPa or more, so that when the high-strength steel bar is applied to a concrete plate flexural member, the minimum reinforcement ratio of the concrete plate flexural member is set as the larger value between 0.15 and 45ft/fy.
High-strength steel bar and method for controlling minimum reinforcement ratio of concrete plate flexural member through high-strength steel bars
YAO SHENGFA (author)
2015-11-25
Patent
Electronic Resource
English
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