PDF《第七章 偏心受拉构件承载力 判断题参考答案》

274 10

550 ' '

200 400

250 002 .

0 '

6 .

310 35

365 300

7 .

55 10

550 ' '

1 .

274 35

1 .

109 2

400 '

2 '

9 .

55 35

1 .

109 2

400 2 mm a h f Ne A mm bh mm a h f Ne A mm a e h e mm a e h e s y s s y s s s = - ? ? ? = - = = ? ? = > = - ? ? ? = - = = - + = - + = = - - = - - = r ' s A 选用

2 14

2 ' 308mm As = s A 选用

4 22

2 1520mm As =