某厂房的围护结构设有悬吊式墙架柱，墙架柱支承于吊车梁的辅助桁架上，其顶端采用弹簧板与屋盖系统相连，底端采用开椭圆孔的普通螺栓与基础相连，计算简图如图所示。钢材采用Q235钢，墙架柱选用热轧H型钢HM244×175×7×11，截面形式如图所示，其截面特性：<br/> <br/> <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251104/9406376_0.png"><br/> <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251104/9406376_0_1.png"><br/> <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251104/9406376_0_2.jpg"><br/> <br/> 2.墙架柱在竖向荷载和水平风吸力共同作用下的弯矩分布图如图所示。已知AB段墙架柱在D点处的最大弯矩设计值<br/> <br/> <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251104/9406376_0_3.png"><br/> <br/> 轴力设计值N=15kN。试问，AB段墙架柱的最大应力计算数值（N/mm2）与下列何项数值最为接近？（　　）<br/> 提示：计算截面无栓（钉）孔削弱。<br/> <br/> <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251104/9406376_0_4.jpg">