In fact, when it comes to the difference between aseismic steel bar and ordinary steel bar, we can see from the name that one is with aseismic steel bar and the other is ordinary steel bar. Seismic steel bars are marked with E, and now they are basically used in the market. The core of steel bar with E is that the index of super-strength ratio of steel bar should not be too large, while the index of strength-yield ratio and elongation should not be too small.

　　抗震钢筋和普通钢筋的区别

　　The Difference between Seismic Reinforcement Bar and Common Reinforcement Bar

　　对于抗震钢筋和普通钢筋的区别，比较科学的是以下三点区别：

　　For the difference between aseismic steel bar and ordinary steel bar, the following three points are more scientific:

　　1)抗震钢筋的实测抗拉强度与实测屈服强度特征值之比不小于1.25；

　　1) The ratio of the measured tensile strength to the measured yield strength is not less than 1.25;

　　2)抗震钢筋的实测屈服强度与标准规定的屈服强度特征值之比不大于1.30；

　　2) The ratio of the measured yield strength to the characteristic value of the standard yield strength is not more than 1.30;

　　3)抗震钢筋的大力总伸长不小于9%。

　　3) The maximum total elongation of the aseismic steel bar is not less than 9%.

　　以上三条确保了钢筋的抗震能力，使得抗震钢筋能够在建筑发生倾斜、变形时“稳起”，不发生断裂。

　　The above three elements ensure the anti-seismic ability of the steel bars, so that the anti-seismic steel bars can be "stabilized" when the buildings are inclined and deformed, and do not break.

　　不过从新标准对抗震钢筋的三条规定要求来看，主要针对钢筋强度和伸长率的实测值在技术指标上作了一定的提升，如条对抗震钢筋规定从屈服到拉断还应承受25%以上的拉力；第二条保证钢筋屈服强度离散性不会过大而影响到设计对结构延性要求的效果；第三条由对普通钢筋规定的大力总伸长率不小于7.5%提高到不小于9%。这些技术指标的提高，加强了钢筋的抗震能力，保证了结构构件在地震力作用下具有更好的延性。

　　However, according to the three requirements of the new standard for seismic steel bars, the measured values of strength and elongation of steel bars have been improved to some extent in technical indicators, such as the first stipulation that seismic steel bars should bear more than 25% tension from yielding to breaking; the second one guarantees that the discreteness of yield strength of steel bars will not be too large to affect the effect of ductility requirement in design; and the third one guarantees that the discreteness of yield strength of steel bars will not be too large The maximum total elongation of bar is increased from 7.5% to 9%. The improvement of these technical indicators strengthens the seismic capacity of steel bars and ensures that structural members have better ductility under seismic force.

　　因此，抗震钢筋和普通钢筋的本质区别就是使钢筋获得更好的延性，从而能够更好地保证重要结构构件在地震时具有足够的塑性变形能力和耗能能力。

　　Therefore, the essential difference between aseismic steel bar and ordinary steel bar is to make the steel bar have better ductility, which can better ensure that the important structural components have enough plastic deformation capacity and energy dissipation capacity in earthquake.