工字鋼主要分為普通工字鋼、輕型工字鋼和寬翼緣工字鋼。按翼緣與腹板高度 比又分為寬幅、中幅、窄幅寬翼緣工字鋼。前二者生產的規格為10—60號,即 相應的高度為10 cm—60 cm。在相同高度下,輕型工字鋼翼緣窄、腹板薄、重 量輕。寬翼緣工字鋼又稱H型鋼,斷面特點是兩腿平行,且腿內側沒有斜度。 它屬于經濟斷面型鋼,是在四輥萬能軋機上軋制的,所以又稱“萬能工字鋼”。普通工字鋼、輕型工字鋼已經形成國家標準。
符號:h—高度; | ||||||||
b—寬度; | ||||||||
tw—腹板厚度; | ||||||||
t—翼緣平均厚度; | ||||||||
I—慣性矩; | ||||||||
W—截面模量 | ||||||||
型 號 | 尺 寸(mm) | 截面面積(cm2) | 理論重量(kg/m) | |||||
h | b | tw | t | R | ||||
mm | mm | mm | mm | mm | ||||
10 | 100 | 68 | 4.5 | 7.6 | 6.5 | 14.3 | 11.2 | |
12.6 | 126 | 74 | 5 | 8.4 | 7 | 18.1 | 14.2 | |
14 | 140 | 80 | 5.5 | 9.1 | 7.5 | 21.5 | 16.9 | |
16 | 160 | 88 | 6 | 9.9 | 8 | 26.1 | 20.5 | |
18 | 180 | 94 | 6.5 | 10.7 | 8.5 | 30.7 | 24.1 | |
20 | a | 200 | 100 | 7 | 11.4 | 9 | 35.5 | 27.9 |
b | 102 | 9 | 39.5 | 31.1 | ||||
22 | a | 220 | 110 | 7.5 | 12.3 | 9.5 | 42.1 | 33 |
b | 112 | 9.5 | 46.5 | 36.5 | ||||
25 | a | 250 | 116 | 8 | 13 | 10 | 48.5 | 38.1 |
b | 118 | 10 | 53.5 | 42 | ||||
28 | a | 280 | 122 | 8.5 | 13.7 | 10.5 | 55.4 | 43.5 |
b | 124 | 10.5 | 61 | 47.9 | ||||
32 | a | 320 | 130 | 9.5 | 15 | 11.5 | 67.1 | 52.7 |
b | 132 | 11.5 | 73.5 | 57.7 | ||||
c | 134 | 13.5 | 79.9 | 62.7 | ||||
36 | a | 360 | 136 | 10 | 15.8 | 12 | 76.4 | 60 |
b | 138 | 12 | 83.6 | 65.6 | ||||
c | 140 | 14 | 90.8 | 71.3 | ||||
40 | a | 400 | 142 | 10.5 | 16.5 | 12.5 | 86.1 | 67.6 |
b | 144 | 12.5 | 94.1 | 73.8 | ||||
c | 146 | 14.5 | 102 | 80.1 | ||||
45 | a | 450 | 150 | 11.5 | 18 | 13.5 | 102 | 80.4 |
b | 152 | 13.5 | 111 | 87.4 | ||||
c | 154 | 15.5 | 120 | 94.5 | ||||
50 | a | 500 | 158 | 12 | 20 | 14 | 119 | 93.6 |
b | 160 | 14 | 129 | 101 | ||||
c | 162 | 16 | 139 | 109 | ||||
56 | a | 560 | 166 | 12.5 | 21 | 14.5 | 135 | 106 |
b | 168 | 14.5 | 147 | 115 | ||||
c | 170 | 16.5 | 158 | 124 | ||||
63 | a | 630 | 176 | 13 | 22 | 15 | 155 | 122 |
b | 178 | 15 | 167 | 131 | ||||
c | 780 | 17 | 180 | 141 |