Official Journal of the Japan Wood Research Society
Table 3 Influence of the section area and diameter–thickness ratio on the mechanical properties of the original bamboo columns
Group | A/mm2 | ξ | Ultimate hoop strain | Increase percentage | Ultimate longitudinal strain | Increase percentage | Ultimate bearing capacity /kN | Increase percentage | Lateral displacement at mid-height section /mm | Increase percentage |
|---|---|---|---|---|---|---|---|---|---|---|
2360 | 4.8 | -9863 | NA | 4379 | NA | 102.83 | NA | 0.54 | NA | |
10 < λ < 20 | 2642 | 5.5 | -10,632 | 7.80% | 4570 | 4.38% | 129.31 | 25.75% | 1.63 | 199.48% |
3112 | 5.7 | -14,965 | 51.73% | 4792 | 9.45% | 170.92 | 66.22% | 1.69 | 211.12% | |
2360 | 4.8 | -11,705 | NA | 3030 | NA | 91.94 | NA | 4.84 | NA | |
20 < λ < 30 | 2642 | 5.5 | -17,664 | 50.91% | 3945 | 30.22% | 115.04 | 25.13% | 5.73 | 18.33% |
3112 | 5.7 | -22,980 | 96.32% | 4386 | 44.78% | 160.91 | 75.02% | 6.16 | 27.27% | |
2360 | 4.8 | -4594 | NA | 803 | NA | 71.41 | NA | 2.70 | NA | |
30 < λ < 45 | 2642 | 5.5 | -10,890 | 137.04% | 2424 | 201.78% | 93.47 | 30.89% | 6.34 | 134.72% |
3112 | 5.7 | -10,995 | 139.34% | 3567 | 344.02% | 130.43 | 82.65% | 7.04 | 160.75% | |
2360 | 4.8 | -4184 | NA | 1440 | NA | 54.36 | NA | 9.33 | NA | |
45 < λ < 60 | 2642 | 5.5 | -5352 | 27.93% | 1699 | 18.01% | 75.90 | 39.62% | 9.44 | 1.13% |
3112 | 5.7 | -8371 | 100.08% | 2960 | 105.53% | 98.71 | 81.59% | 18.28 | 95.92% |