Skip to main content

Official Journal of the Japan Wood Research Society

Table 1 Test results

From: Mechanical evaluation for laminated bamboo lumber along two eccentric compression directions

Specimen

\( N_{\text{ul}} \) (kN)

\( w_{\text{ul}} \) (mm)

\( \varepsilon_{\text{uasA}} \) (μɛ)

\( \varepsilon_{\text{uasC}} \) (μɛ)

\( \varepsilon_{\text{ulsA}} \) (μɛ)

\( \varepsilon_{\text{ulsC}} \) (μɛ)

\( s_{\text{ul}} \) (mm)

\( M_{\text{ul}} \) (kN m)

LBCC10-1

230.0

20.9

3227

−9910

−973

2944

9.49

7.12

LBCC10-2

228.4

20.1

2273

−8900

−817

3248

12.2

6.87

LBCC10-3

230.1

21.4

3094

−7045

−876

3036

9.76

7.22

LBCC10-4

228.7

18.3

2297

−8644

−770

2581

12.0

6.46

LBCC10-5

227.7

21.5

3534

−9700

−940

3045

8.04

7.16

LBCC10-6

232.0

35.9

2445

−8055

−696

2625

8.49

10.6

LBCC10-7

234.3

18.6

2914

−9008

−766

2280

7.83

6.70

LBCC10-8

223.2

23.0

3788

−10568

−962

2945

8.34

7.36

LBCC25-1

178.1

37.2

7443

−13067

−1921

4229

11.3

11.1

LBCC25-2

182.8

40.2

8379

−16075

−2141

4158

12.8

11.9

LBCC25-3

186.0

44.5

9319

−17030

−2742

5188

13.9

12.9

LBCC25-4

182.3

44.5

7709

−10129

−2397

6248

12.8

12.7

LBCC25-5

182.6

40.5

7237

−14516

−2022

–

14.3

12.0

LBCC25-6

180.5

35.3

6493

−13004

−1714

3318

12.2

10.9

LBCC25-7

188.7

42.8

8281

−13946

−2054

5432

13.2

12.8

LBCC25-8

180.5

40.2

7848

−15069

−2141

4481

13.1

11.8

LBCC40-1

148.8

46.6

10975

−15845

−2772

2831

23.8

12.9

LBCC40-2

149.4

52.6

10698

−15301

−2929

6597

24.7

13.8

LBCC40-3

138.3

46.6

10046

−16591

−2808

4859

21.6

12.0

LBCC40-4

140.7

48.5

8904

−17060

−2885

5082

19.1

12.5

LBCC40-5

145.4

43.5

10677

−18656

−2674

5602

23.3

12.1

LBCC40-6

151.9

53.0

11001

−18602

−2498

5398

22.6

14.1

LBCC40-7

137.1

39.9

9206

−14225

−2530

4036

16.0

10.9

LBCC40-8

137.2

33.1

6808

−10882

−1934

3048

14.4

10.0

LBCC55-1

127.5

47.7

10227

−14540

−3141

4810

22.9

13.1

LBCC55-2

131.4

50.0

10847

−18153

−2642

6082

23.7

13.8

LBCC55-3

125.7

47.2

9385

−15544

−2375

4734

22.6

12.8

LBCC55-4

129.4

54.8

11500

−15082

−3407

5738

29.2

14.2

LBCC55-5

124.9

41.2

7416

−12925

−2085

3825

17.6

12.0

LBCC55-6

117.5

–

8662

−12818

−2253

4324

19.2

6.46

LBCC55-7

130.2

45.8

10351

−16510

−3234

5107

24.6

13.1

LBCC55-8

127.9

39.9

8062

−13155

−2278

4375

19.2

12.1

LBCC70-1

105.9

37.0

7860

−10198

−2207

3422

19.8

11.3

LBCC70-2

107.4

42.0

9035

−13906

−2674

4290

20.6

12.0

LBCC70-3

112.4

45.0

9011

−14721

−2995

4948

24.1

12.9

LBCC70-4

112.3

48.0

10319

–

−2641

5836

25.9

13.3

LBCC70-5

107.3

38.5

8199

−10911

−2220

3798

21.0

11.6

LBCC70-6

108.3

47.8

9769

−13932

−2365

3746

26.7

12.8

LBCC70-7

100.2

38.1

8251

−10094

–

3551

20.7

10.8

LBCC70-8

112.0

47.8

9900

−15311

−2581

5250

26.0

13.2

LBCC80-1

105.7

44.4

9444

−11460

−2964

4899

26.0

13.1

LBCC80-2

104.4

49.2

10708

−14157

−3070

5380

30.6

13.5

LBCC80-3

107.7

54.4

10322

−16309

−3225

5662

29.8

14.5

LBCC80-4

101.2

42.9

8910

−14469

−2564

4649

23.0

12.4

LBCC80-5

102.7

49.3

9881

−14152

−3000

–

30.5

13.3

LBCC80-6

99.3

40.1

8102

−13452

−1947

4019

22.3

11.9

LBCC80-7

95.1

36.3

–

−9011

−1386

3530

20.1

11.1

LBCC80-8

101.8

45.6

9485

−11995

−2683

4234

26.8

12.8

LBCC90-1

81.8

31.0

6010

−6987

−1601

2269

16.3

9.90

LBCC90-2

91.5

36.0

8447

−9309

−2032

2163

26.7

11.5

LBCC90-3

85.3

41.0

8219

−5826

−2196

3872

24.0

11.2

LBCC90-4

86.9

40.0

8966

−10151

−2248

3931

26.6

11.3

LBCC90-5

88.0

38.1

8124

−11478

−2222

3885

28.6

11.3

LBCC90-6

93.7

45.9

8014

−10170

−2152

3130

25.4

12.7

LBCC90-7

89.5

48.7

9852

−14340

−2731

3647

33.2

12.4

LBCC90-8

86.8

39.5

8197

−11708

–

3499

25.8

11.2

LBCC100-1

76.8

41.0

7666

−8586

−1929

3519

31.4

10.8

LBCC100-2

81.6

39.1

8292

−8132

−2450

3381

29.3

11.4

LBCC100-3

84.6

44.5

8942

−10243

−2845

3569

30.9

12.2

LBCC100-4

79.3

40.6

8442

−9840

–

4685

28.3

11.1

LBCC100-5

79.5

34.5

7268

−8742

−2018

2627

22.5

10.7

LBCC100-6

93.4

52.3

10366

−12265

−3259

5150

36.1

14.2

LBCC100-7

79.7

–

7647

−10224

−2133

3516

26.5

7.97

LBCC100-8

80.2

31.5

8227

−8486

−2392

3006

27.5

10.5

LBCC110-1

73.5

41.0

8123

−12112

−2520

3409

35.4

11.1

LBCC110-2

83.7

39.0

8193

−13437

–

4660

34.5

12.5

LBCC110-3

84.2

39.0

10683

−15449

−2923

5460

35.9

12.5

LBCC110-4

80.8

40.0

9114

−10071

−2310

5457

34.1

12.1

LBCC110-5

80.7

42.2

8670

−10965

−3225

3198

34.1

12.3

LBCC110-6

80.6

41.0

8157

−9545

−2237

3570

27.5

12.2

LBCC110-7

80.0

39.6

8514

−10621

−2418

2652

28.9

12.0

LBCC110-8

80.4

37.8

8446

−11263

−2202

3095

26.9

11.9

LBCC120-1

72.1

45.8

8202

−12178

−2623

3418

36.4

12.0

LBCC120-2

80.2

48.6

9195

−13881

−2612

4941

42.1

13.5

LBCC120-3

73.8

51.9

7353

−14095

−2099

3489

41.9

12.7

LBCC120-4

78.5

49.4

8866

−10596

−2548

4289

39.8

13.3

  1. \( N_{\text{ul}} \) is the ultimate load. \( w_{\text{ul}} \) is the deflection for the peak load point. \( \varepsilon_{\text{uasA}} \) and \( \varepsilon_{\text{uasC}} \) are the longitudinal strain for face C and face A, respectively. \( \varepsilon_{\text{ulsA}} \) and \( \varepsilon_{\text{ulsC}} \) are the lateral strain for face C and face A, respectively. \( s_{\text{ul}} \) is the axial displacement. \( M_{\text{ul}} \) is the ultimate moment