原式=1+3+2=6.
Li Lei is as at running as me.
A. better B. well C. good
假设构件的截面尺寸为b×h=200mm×300mm,as=as'=25mm,承受轴心拉力设计值N=380kN,弯矩设计值M=38kN·m,混凝土强度等级为C25,纵筋采用HRB335钢筋。假设截面为对称配筋,则靠近轴向拉力作用点一侧的纵向钢筋的计算面积As最接近()项配筋方案。
A.3φ18
B.3φ22
C.4φ18
D.2φ22