2024年3月29日发(作者：仆会欣)

尺寸/mm

型号

h

10

12.6

14

16

18

20a

20b

22a

22b

25a

25b

28a

28b

100

126

140

160

180

200

200

220

220

250

250

280

280

b

68

74

80

88

94

100

102

110

112

116

118

122

124

d

4.5

5.0

5.5

6.0

6.5

7.0

9.0

7.5

9.5

8.0

10.0

8.5

10.5

t

7.6

8.4

9.1

9.9

10.7

11.4

11.4

12.3

12.3

13.0

13.0

13.7

13.7

r

6.5

7.0

7.5

8.0

8.5

9.0

9.0

9.5

9.5

10.0

10.0

10.5

10.5

r1

3.4

3.5

3.8

4.0

4.3

4.5

4.5

4.8

4.8

5.0

5.0

5.3

5.3

14.345

18.118

21.516

26.131

30.756

35.578

39.578

42.128

46.528

48.541

53.541

55.404

61.004

11.261

14.223

16.890

20.513

24.143

27.929

31.069

33.070

36.524

38.105

42.030

43.492

47.888

截面面积/cm2理论质量/(kg/m)

Ix/cm4

245

488

712

1130

1660

2370

2500

3400

3570

5020

5280

7110

7480

X～X

参考数值

Y-Y

Wx/cm3ix/cmIx:SxIy/cm4Wy/cm3iy/cm

49

77.5

102

141

185

237

250

309

325

402

423

508

534

4.14

5.20

5.76

6.58

7.36

8.15

7.96

8.99

8.78

10.2

9.94

11.3

11.1

8.59

10.8

12.0

13.8

15.4

17.2

16.9

18.9

18.7

21.6

21.3

24.6

24.2

33.0

46.9

64.4

93.1

122

158

169

225

239

280

309

345

379

9.72

12.7

16.1

21.2

26.0

31.5

33.1

40.9

42.7

48.3

52.4

56.6

61.2

1.52

1.61

1.73

1.89

2.00

2.12

2.06

2.31

2.27

2.40

2.40

2.50

2.49

32a

32b

32c

36a

36b

36c

40a

40b

40c

45a

45b

45c

50a

50b

50c

56a

320

320

320

360

360

360

400

400

400

450

450

450

500

500

500

560

130

132

134

136

138

140

142

144

146

150

152

154

158

160

162

166

9.5

11.5

13.5

10.0

12.0

14.0

10.5

12.5

14.5

11.5

13.5

15.5

12.0

14.0

16.0

12.5

15.0

15.0

15.0

15.8

15.8

15.8

16.5

16.5

16.5

18.0

18.0

18.0

20.0

20.0

20.0

21.0

11.5

11.5

11.5

12.0

12.0

12.0

12.5

12.5

12.5

13.5

13.5

13.5

14.0

14.0

14.0

14.5

5.8

5.8

5.8

6.0

6.0

6.0

6.3

6.3

6.3

6.8

6_8

6.8

7.0

7.0

7.0

7.3

67.156

73.556

79.956

76.480

83.680

90.880

86.112

94.112

102.112

102.446

111.446

120.446

119,304

129.304

139.304

135.435

52.717

57.741

62.765

60.037

65.689

71.341

67.598

73.878

80.158

80.420

87.485

94.550

93.654

101.504

109.354

106.316

11100

11600

12200

15800

16500

17300

21700

22800

23900

22200

33800

35300

46500

48600

50600

65600

692

726

760

875

919

962

1090

1140

1190

1430

1500

1570

1860

1940

2080

2340

12.8

12.6

12.3

14.4

14.1

13.8

15.9

15.6

15.2

17.7

17.4

17.1

19.7

19.4

19.0

22.0

27.5

27.1

26.8

30.7

30.3

29.9

34.1

33.6

33.2

38.6

38.0

37.6

42.8

42.4

41.8

47.7

460

502

544

552

582

612

660

692

727

855

894

938

1120

1170

1220

1370

70.8

76.0

81.2

81.2

84.3

87.4

93.2

96.2

99.6

114

118

122

142

146

151

165

2.62

2.61

2.61

2.69

2.64

2.60

2.77

2.71

2.65

2.89

2.84

2.79

3.07

3.01

2.96

3.18

56b

56c

63a

63b

63c

12

①

560

560

630

630

630

120

240

240

270

270

300

300

300

550

550

550

168

170

176

178

180

74

116

118

122

124

126

128

130

168

168

170

14.5

16.5

13.0

15.0

17.0

5.0

8.0

10.0

8.5

10.5

9.0

11.0

13.0

12.5

14.5

16.5

21.0

21.0

22.0

22.0

22.0

8.4

13.0

13.0

13.7

13.7

14.4

14.4

14.4

21.0

21.0

21.0

14.5

14.5

15.0

15.0

15.0

7.0

10.0

10.0

10.5

10.5

11.0

11.0

11.0

14.5

14.5

14.5

7.3

7.3

7.5

7.5

7.5

3.5

5.0

5.0

5.3

5.3

5.5

5.5

5.5

7.3

7.3

7.3

146.635

157.835

154.658

167.258

179.858

17.818

47.741

52.541

54.554

59.954

61.254

67.254

73.254

134.185

145.185

156.185

115.108

123.900

121.407

131.298

141.189

13.987

37.477

41.245

42.825

47.064

48.084

52.794

57.504

105.335

113.970

122.605

68500

71400

93900

98100

102000

436

4570

4800

6550

6870

8950

9400

9850

62900

65600

68400

2450

2550

2980

3160

3300

72.7

381

400

485

509

597

627

657

2290

2390

2490

21.6

21.3

24.5

24.2

23.8

4.95

9.77

9.57

10.9

10.7

12.1

11.8

11.6

21.6

21.2

20.9

47.2

46.7

54.2

53.5

52.9

10.3

20.7

20.4

23.8

22.9

25.7

25.4

25.0

46.9

46.4

45.8

1490

1560

1700

1810

1920

46.9

280

297

345

366

400

422

445

1370

1420

1480

174

183

193

204

214

12.7

48.4

50.4

56.6

58.9

63.5

65.9

68.5

164

170

175

3.16

3.16

3.31

3.29

3.27

1.62

2.42

2.38

2.51

2.47

2.55

2.50

2.46

3.19

3.14

3.08

24a

①

24b①

27a①

27b①

30a①

30b①

30c①

55a①

55b①

55c①

符号意义：

h—

高度；

r

1

—

腿端圆弧半径；

b—

腿宽度；

l—

惯性矩；

d—

腰厚度；

W—

抗弯截面系数；

t—

平均腿厚度；

i—

惯性半径；

C—

形心；

r—

内圆弧半径；

S—

半截面的静力矩。

表1 工字钢截面尺寸、截面面积、理论重量及截面特性

截面尺寸，mm

型号

h

10

12.6

14

16

18

20a

20b

22a

22b

25a

25b

28a

28b

32a

32b

32c

36a

36b

36c

40a

40b

40c

45a

45b

45c

50a

50b

50c

56a

56b

56c

63a

63b

63c

100

126

140

160

180

200

200

220

20

250

250

280

280

320

320

320

360

360

360

400

400

400

450

450

450

500

500

500

560

560

560

630

630

630

b

68

74

80

88

94

100

102

110

112

116

118

122

124

130

132

134

136

138

140

142

144

146

150

152

154

158

160

162

`66

168

170

176

178

180

d

4.5

5.0

5.5

6.0

6.5

7.0

9.0

7.5

9.5

8.0

10.0

8.5

10.5

9.5

11.5

13.5

10.0

12.0

14.0

10.5

12.5

14.5

11.5

13.5

15.5

12.0

14.0

16.0

12.5

14.5

16.5

13.0

15.0

17.0

t

7.6

8.4

9.1

9.9

10.7

11.4

11.4

12.3

12.3

13.0

13.0

13.7

13.7

15.0

15.0

15.0

15.8

15.8

15.8

16.5

16.5

16.5

18.0

18.0

18.0

20.0

20.0

20.0

21.0

21.0

21.0

22.0

22.0

22.0

r

6.5

7.0

7.5

8.0

8.5

9.0

9.0

9.5

9.5

10.0

10.0

10.5

10.5

11.5

11.5

11.5

12.0

12.0

12.0

12.5

12.5

12.5

13.5

13.5

13.5

14.0

14.0

14.0

14.5

14.5

14.5

15.0

15.0

15.0

r

1

3.3

3.5

3.8

4.0

4.3

4.5

4.5

4.8

4.8

5.0

5.0

5.3

5.3

5.8

5.8

5.8

6.0

6.0

6.0

6.3

6.3

6.3

6.8

6.8

6.8

7.0

7.0

7.0

7.3

7.3

7.3

7.5

7.5

7.5

截面

面积

cm

2

14.345

18.118

21.516

26.131

30.756

35.578

39.578

42.128

46.528

48.541

53.541

55.404

61.004

67.156

73.556

79.956

76.480

83.680

90.880

86.112

94.112

102.112

102.446

111.446

120.446

119.304

129.304

139.304

135.435

146.635

157.835

154.658

167.258

179.858

理论

重量

kg/m

11.261

14.223

16.890

20.513

24.143

27.929

31.069

33.070

36.524

38.105

42.030

43.492

47.888

52.717

57.741

62.765

60.037

65.689

71.341

67.598

73.878

80.158

80.420

87.485

94.550

93.654

101.504

109.354

106.316

115.108

123.900

121.407

131.298

141.189

惯性矩，cm

4

Ix

245

488

712

1130

1660

2370

2500

3400

3570

5020

5280

7110

7480

11100

11600

12200

15800

16500

17300

21700

22800

23900

32200

33800

35300

46500

48600

50600

65600

68500

71400

93900

98100

102000

惯性半径，cm

ix

4.14

5.20

5.76

6.58

7.36

8.15

7.96

8.99

8.78

10.2

9.94

11.3

11.1

12.8

12.6

12.3

14.4

14.1

13.8

15.9

15.6

15.2

17.7

17.4

17.1

19.7

19.4

19.0

22.0

21.6

21.3

24.5

24.2

23.8

截面模数，cm

3

Wx

49.0

77.5

102

141

185

237

250

309

325

402

423

508

534

692

726

760

875

919

962

1090

1140

1190

1430

1500

1570

1860

1940

2080

2340

2450

2550

2980

3160

3300

Iy

33.0

46.9

64.4

93.1

122

158

169

225

239

280

309

345

379

460

502

544

552

582

612

660

692

727

855

894

938

1120

1170

1220

1370

1490

1560

1700

1810

1920

iy

1.52

1.61

1.73

1.89

2.00

2.12

2.06

2.31

2.27

2.40

2.40

2.50

2.49

2.62

2.61

2.61

2.69

2.64

2.60

2.77

2.71

2.65

2.89

2.84

2.79

3.07

3.01

2.96

3.18

3.16

3.16

3.31

3.29

3.27

Wy

9.72

12.7

16.1

21.2

26.0

31.5

33.1

40.9

42.7

48.3

52.4

56.6

61.2

70.8

76.0

81.2

81.2

84.3

87.4

93.2

96.2

99.6

114

118

122

142

146

151

165

174

183

193

204

214

2024年3月29日发(作者：仆会欣)

尺寸/mm

型号

h

10

12.6

14

16

18

20a

20b

22a

22b

25a

25b

28a

28b

100

126

140

160

180

200

200

220

220

250

250

280

280

b

68

74

80

88

94

100

102

110

112

116

118

122

124

d

4.5

5.0

5.5

6.0

6.5

7.0

9.0

7.5

9.5

8.0

10.0

8.5

10.5

t

7.6

8.4

9.1

9.9

10.7

11.4

11.4

12.3

12.3

13.0

13.0

13.7

13.7

r

6.5

7.0

7.5

8.0

8.5

9.0

9.0

9.5

9.5

10.0

10.0

10.5

10.5

r1

3.4

3.5

3.8

4.0

4.3

4.5

4.5

4.8

4.8

5.0

5.0

5.3

5.3

14.345

18.118

21.516

26.131

30.756

35.578

39.578

42.128

46.528

48.541

53.541

55.404

61.004

11.261

14.223

16.890

20.513

24.143

27.929

31.069

33.070

36.524

38.105

42.030

43.492

47.888

截面面积/cm2理论质量/(kg/m)

Ix/cm4

245

488

712

1130

1660

2370

2500

3400

3570

5020

5280

7110

7480

X～X

参考数值

Y-Y

Wx/cm3ix/cmIx:SxIy/cm4Wy/cm3iy/cm

49

77.5

102

141

185

237

250

309

325

402

423

508

534

4.14

5.20

5.76

6.58

7.36

8.15

7.96

8.99

8.78

10.2

9.94

11.3

11.1

8.59

10.8

12.0

13.8

15.4

17.2

16.9

18.9

18.7

21.6

21.3

24.6

24.2

33.0

46.9

64.4

93.1

122

158

169

225

239

280

309

345

379

9.72

12.7

16.1

21.2

26.0

31.5

33.1

40.9

42.7

48.3

52.4

56.6

61.2

1.52

1.61

1.73

1.89

2.00

2.12

2.06

2.31

2.27

2.40

2.40

2.50

2.49

32a

32b

32c

36a

36b

36c

40a

40b

40c

45a

45b

45c

50a

50b

50c

56a

320

320

320

360

360

360

400

400

400

450

450

450

500

500

500

560

130

132

134

136

138

140

142

144

146

150

152

154

158

160

162

166

9.5

11.5

13.5

10.0

12.0

14.0

10.5

12.5

14.5

11.5

13.5

15.5

12.0

14.0

16.0

12.5

15.0

15.0

15.0

15.8

15.8

15.8

16.5

16.5

16.5

18.0

18.0

18.0

20.0

20.0

20.0

21.0

11.5

11.5

11.5

12.0

12.0

12.0

12.5

12.5

12.5

13.5

13.5

13.5

14.0

14.0

14.0

14.5

5.8

5.8

5.8

6.0

6.0

6.0

6.3

6.3

6.3

6.8

6_8

6.8

7.0

7.0

7.0

7.3

67.156

73.556

79.956

76.480

83.680

90.880

86.112

94.112

102.112

102.446

111.446

120.446

119,304

129.304

139.304

135.435

52.717

57.741

62.765

60.037

65.689

71.341

67.598

73.878

80.158

80.420

87.485

94.550

93.654

101.504

109.354

106.316

11100

11600

12200

15800

16500

17300

21700

22800

23900

22200

33800

35300

46500

48600

50600

65600

692

726

760

875

919

962

1090

1140

1190

1430

1500

1570

1860

1940

2080

2340

12.8

12.6

12.3

14.4

14.1

13.8

15.9

15.6

15.2

17.7

17.4

17.1

19.7

19.4

19.0

22.0

27.5

27.1

26.8

30.7

30.3

29.9

34.1

33.6

33.2

38.6

38.0

37.6

42.8

42.4

41.8

47.7

460

502

544

552

582

612

660

692

727

855

894

938

1120

1170

1220

1370

70.8

76.0

81.2

81.2

84.3

87.4

93.2

96.2

99.6

114

118

122

142

146

151

165

2.62

2.61

2.61

2.69

2.64

2.60

2.77

2.71

2.65

2.89

2.84

2.79

3.07

3.01

2.96

3.18

56b

56c

63a

63b

63c

12

①

560

560

630

630

630

120

240

240

270

270

300

300

300

550

550

550

168

170

176

178

180

74

116

118

122

124

126

128

130

168

168

170

14.5

16.5

13.0

15.0

17.0

5.0

8.0

10.0

8.5

10.5

9.0

11.0

13.0

12.5

14.5

16.5

21.0

21.0

22.0

22.0

22.0

8.4

13.0

13.0

13.7

13.7

14.4

14.4

14.4

21.0

21.0

21.0

14.5

14.5

15.0

15.0

15.0

7.0

10.0

10.0

10.5

10.5

11.0

11.0

11.0

14.5

14.5

14.5

7.3

7.3

7.5

7.5

7.5

3.5

5.0

5.0

5.3

5.3

5.5

5.5

5.5

7.3

7.3

7.3

146.635

157.835

154.658

167.258

179.858

17.818

47.741

52.541

54.554

59.954

61.254

67.254

73.254

134.185

145.185

156.185

115.108

123.900

121.407

131.298

141.189

13.987

37.477

41.245

42.825

47.064

48.084

52.794

57.504

105.335

113.970

122.605

68500

71400

93900

98100

102000

436

4570

4800

6550

6870

8950

9400

9850

62900

65600

68400

2450

2550

2980

3160

3300

72.7

381

400

485

509

597

627

657

2290

2390

2490

21.6

21.3

24.5

24.2

23.8

4.95

9.77

9.57

10.9

10.7

12.1

11.8

11.6

21.6

21.2

20.9

47.2

46.7

54.2

53.5

52.9

10.3

20.7

20.4

23.8

22.9

25.7

25.4

25.0

46.9

46.4

45.8

1490

1560

1700

1810

1920

46.9

280

297

345

366

400

422

445

1370

1420

1480

174

183

193

204

214

12.7

48.4

50.4

56.6

58.9

63.5

65.9

68.5

164

170

175

3.16

3.16

3.31

3.29

3.27

1.62

2.42

2.38

2.51

2.47

2.55

2.50

2.46

3.19

3.14

3.08

24a

①

24b①

27a①

27b①

30a①

30b①

30c①

55a①

55b①

55c①

符号意义：

h—

高度；

r

1

—

腿端圆弧半径；

b—

腿宽度；

l—

惯性矩；

d—

腰厚度；

W—

抗弯截面系数；

t—

平均腿厚度；

i—

惯性半径；

C—

形心；

r—

内圆弧半径；

S—

半截面的静力矩。

表1 工字钢截面尺寸、截面面积、理论重量及截面特性

截面尺寸，mm

型号

h

10

12.6

14

16

18

20a

20b

22a

22b

25a

25b

28a

28b

32a

32b

32c

36a

36b

36c

40a

40b

40c

45a

45b

45c

50a

50b

50c

56a

56b

56c

63a

63b

63c

100

126

140

160

180

200

200

220

20

250

250

280

280

320

320

320

360

360

360

400

400

400

450

450

450

500

500

500

560

560

560

630

630

630

b

68

74

80

88

94

100

102

110

112

116

118

122

124

130

132

134

136

138

140

142

144

146

150

152

154

158

160

162

`66

168

170

176

178

180

d

4.5

5.0

5.5

6.0

6.5

7.0

9.0

7.5

9.5

8.0

10.0

8.5

10.5

9.5

11.5

13.5

10.0

12.0

14.0

10.5

12.5

14.5

11.5

13.5

15.5

12.0

14.0

16.0

12.5

14.5

16.5

13.0

15.0

17.0

t

7.6

8.4

9.1

9.9

10.7

11.4

11.4

12.3

12.3

13.0

13.0

13.7

13.7

15.0

15.0

15.0

15.8

15.8

15.8

16.5

16.5

16.5

18.0

18.0

18.0

20.0

20.0

20.0

21.0

21.0

21.0

22.0

22.0

22.0

r

6.5

7.0

7.5

8.0

8.5

9.0

9.0

9.5

9.5

10.0

10.0

10.5

10.5

11.5

11.5

11.5

12.0

12.0

12.0

12.5

12.5

12.5

13.5

13.5

13.5

14.0

14.0

14.0

14.5

14.5

14.5

15.0

15.0

15.0

r

1

3.3

3.5

3.8

4.0

4.3

4.5

4.5

4.8

4.8

5.0

5.0

5.3

5.3

5.8

5.8

5.8

6.0

6.0

6.0

6.3

6.3

6.3

6.8

6.8

6.8

7.0

7.0

7.0

7.3

7.3

7.3

7.5

7.5

7.5

截面

面积

cm

2

14.345

18.118

21.516

26.131

30.756

35.578

39.578

42.128

46.528

48.541

53.541

55.404

61.004

67.156

73.556

79.956

76.480

83.680

90.880

86.112

94.112

102.112

102.446

111.446

120.446

119.304

129.304

139.304

135.435

146.635

157.835

154.658

167.258

179.858

理论

重量

kg/m

11.261

14.223

16.890

20.513

24.143

27.929

31.069

33.070

36.524

38.105

42.030

43.492

47.888

52.717

57.741

62.765

60.037

65.689

71.341

67.598

73.878

80.158

80.420

87.485

94.550

93.654

101.504

109.354

106.316

115.108

123.900

121.407

131.298

141.189

惯性矩，cm

4

Ix

245

488

712

1130

1660

2370

2500

3400

3570

5020

5280

7110

7480

11100

11600

12200

15800

16500

17300

21700

22800

23900

32200

33800

35300

46500

48600

50600

65600

68500

71400

93900

98100

102000

惯性半径，cm

ix

4.14

5.20

5.76

6.58

7.36

8.15

7.96

8.99

8.78

10.2

9.94

11.3

11.1

12.8

12.6

12.3

14.4

14.1

13.8

15.9

15.6

15.2

17.7

17.4

17.1

19.7

19.4

19.0

22.0

21.6

21.3

24.5

24.2

23.8

截面模数，cm

3

Wx

49.0

77.5

102

141

185

237

250

309

325

402

423

508

534

692

726

760

875

919

962

1090

1140

1190

1430

1500

1570

1860

1940

2080

2340

2450

2550

2980

3160

3300

Iy

33.0

46.9

64.4

93.1

122

158

169

225

239

280

309

345

379

460

502

544

552

582

612

660

692

727

855

894

938

1120

1170

1220

1370

1490

1560

1700

1810

1920

iy

1.52

1.61

1.73

1.89

2.00

2.12

2.06

2.31

2.27

2.40

2.40

2.50

2.49

2.62

2.61

2.61

2.69

2.64

2.60

2.77

2.71

2.65

2.89

2.84

2.79

3.07

3.01

2.96

3.18

3.16

3.16

3.31

3.29

3.27

Wy

9.72

12.7

16.1

21.2

26.0

31.5

33.1

40.9

42.7

48.3

52.4

56.6

61.2

70.8

76.0

81.2

81.2

84.3

87.4

93.2

96.2

99.6

114

118

122

142

146

151

165

174

183

193

204

214