GBT6727XX客货运汽车用冷弯型钢尺寸外形重量及允许偏差Word下载.docx

GBT6727XX客货运汽车用冷弯型钢尺寸外形重量及允许偏差Word下载.docx

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图1冷弯方形空心型钢

H—长边；

B—短边；

t—壁厚。

图2冷弯矩形空心型钢

表1冷弯方形空心型钢

边长

mm

尺寸承诺偏差

壁厚

理论

重量

kg/m

截面

面积

cm2

惯性矩

cm4

惯性半径

cm

截面模数

cm3

扭转常数

B

±

△

t

M

A

Ix=Iy

rx=ry

wx=wy

It,cm4

Ct,cm3

20

0.50

1.5

1.75

2.0

0.826

0.941

1.050

1.052

1.199

1.340

0.583

0.642

0.692

0.744

0.732

0.720

0.692

0.985

1.106

1.215

0.88

0.98

1.06

25

1.061

1.363

1.352

1.548

1.736

1.216

1.357

1.482

0.948

0.936

0.923

0.973

1.086

1.186

1.998

2.261

2.502

1.47

1.65

1.80

30

2.5

3.0

1.296

1.490

1.677

2.032

2.361

1.652

1.898

2.136

2.589

3.008

2.195

2.470

2.721

3.154

3.500

1.152

1.140

1.128

1.103

1.078

1.463

1.646

1.814

2.102

2.333

3.555

4.048

4.511

5.347

6.060

2.21

2.49

2.75

3.20

3.58

40

4.0

1.767

2.039

2.305

2.817

3.303

4.198

2.525

2.598

2.936

3.589

4.208

5.489

6.237

6.939

8.213

9.320

11.064

1.561

1.549

1.537

1.512

1.488

1.438

2.744

3.118

3.469

4.106

4.660

5.532

8.728

10.009

11.238

13.539

15.628

19.152

4.13

4.69

5.23

6.21

7.07

8.48

50

2.238

2.933

3.602

4.245

5.454

2.852

3.298

3.736

4.589

5.408

6.947

11.065

12.641

14.146

16.941

19.463

23.725

1.969

1.957

1.945

1.921

1.897

1.847

4.426

5.056

5.658

6.776

7.785

9.490

17.395

20.025

22.578

27.436

31.972

40.047

6.65

7.60

8.51

10.22

11.77

14.43

60

0.60

5.0

3.560

4.387

5.187

6.710

8.129

4.540

5.589

6.608

8.547

10.356

25.120

30.340

35.130

43.539

50.468

2.350

2.329

2.256

2.207

8.380

10.113

11.710

14.513

16.822

39.810

48.539

56.892

72.188

85.560

12.60

15.22

17.65

21.97

25.61

70

0.65

5.170

6.129

7.966

9.699

6.590

7.808

10.147

12.356

49.400

57.522

72.108

84.602

2.740

2.714

2.665

2.616

14.100

16.434

20.602

24.172

78.500

92.188

117.975

141.183

21.20

24.74

31.11

36.65

80

0.70

7.071

9.222

11.269

9.008

11.747

14.356

87.838

111.031

131.414

3.122

3.074

3.025

21.959

27.757

32.853

139.660

179.808

216.628

33.02

41.84

49.68

90

0.75

6.0

8.013

10.478

12.839

15.097

10.208

13.347

16.356

19.232

127.277

161.907

192.903

220.420

3.531

3.482

3.434

3.385

28.283

35.979

42.867

48.982

201.108

260.088

314.896

365.452

42.51

54.17

64.71

74.16

100

0.80

11.734

14.409

16.981

11.947

18.356

21.632

226.337

271.071

311.415

3.891

3.842

3.794

45.267

54.214

62.283

361.213

438.986

511.558

68.10

81.72

94.12

120

0.90

14.246

17.549

20.749

18.147

22.356

26.432

402.260

485.441

562.094

4.708

4.659

4.611

67.043

80.906

93.683

635.603

776.632

910.281

100.75

121.75

141.22

表2矩形冷弯空心型钢

边长

壁厚

理论重量

截面面积

惯性矩

惯性半径

截面模数

扭转常数

H

Δ

Ix

Iy

rx

ry

Wx

Wy

Itcm4

Ctcm3

2.252

7.535

3.415

1.829

1.231

3.014

2.276

7.587

3.83

8.566

3.868

1.815

1.220

3.426

2.579

8.682

4.35

9.535

4.291

1.801

1.208

3.814

2.861

9.727

4.84

11.296

5.050

1.774

4.518

3.366

11.666

5.72

4.206

12.827

5.696

1.745

1.163

5.130

3.797

13.401

6.49

15.239

6.682

1.688

1.117

6.095

4.455

16.244

7.77

±

2.003

2.552

9.300

6.602

1.908

1.608

3.720

3.301

12.238

5.24

2.314

2.948

10.603

7.518

1.896

1.596

4.241

3.759

14.059

5.97

2.619

3.336

11.840

8.348

1.883

1.585

4.736

4.192

15.817

6.673

3.210

4.089

14.121

9.976

1.858

1.562

5.648

4.988

19.222

7.965

3.775

4.808

16.149

11.382

1.833

1.539

6.460

5.691

22.