区格水深（m）a(mm)b(mm)b/a k p(N/mm2)
2.0550
Ⅰ 2.498002590 3.240.750.0244Ⅱ 3.3757702590 3.360.50.0331Ⅲ 4.2357402590 3.500.50.0415Ⅳ 5.025******* 3.810.50.0492Ⅴ 5.7456202590 4.180.50.0563Ⅵ 6.4355702590 4.540.50.0631Ⅶ7.0655002590 5.180.750.0692Ⅷ150
50
0.1357.25800
0.129 6.6370
0.1447.14770
0.1577.15140
0.168 6.97740
0.178 6.7870
0.2287.63680
70
620
t=8mm70
570
150
500
150
890 910 810 770 740 680
700