为了了解新标准在抗震规定方面的有效性，按新规范设计8度区二级、9度区一级典型钢筋混凝土框架结构。
To verify the effectiveness of structural capacity design provisions in the new codes , firstly , two typical RC frame structures of Grade 2 in intensity-category 8 and Grade 1 in intensity-category 9 are designed according to the new codes .
一级钢筋