基于状态空间法的分段变截面吊杆张拉力分析
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欧阳光,李田军,张江涛,汪劲丰,徐荣桥
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Tension analysis of hangers with stepped cross-section based on state space method
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Guang OUYANG,Tian-jun LI,Jiang-tao ZHANG,Jing-feng WANG,Rong-qiao XU
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| 表 3 吊杆有效计算长度的识别结果 |
| Tab.3 Recognition results of effective calculation length of hanger |
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| lc /m | f1 /Hz | l0 /m | l0 /lc | （0.984lc+0.339）/m | T1 /kN | [（T1−T0）/T0]/% | | 0.5 | 37.118 | 2.002 | 4.005 | − | − | − | | 1.0 | 33.294 | 2.232 | 2.232 | − | − | − | | 1.5 | 30.847 | 2.409 | 1.606 | − | − | − | | 2.0 | 28.236 | 2.632 | 1.316 | − | − | − | | 2.5 | 25.194 | 2.950 | 1.180 | − | − | − | | 3.0 | 22.174 | 3.352 | 1.117 | 3.291 | 289.211 | −3.60 | | 3.5 | 19.561 | 3.800 | 1.086 | 3.783 | 297.364 | −0.88 | | 4.0 | 17.407 | 4.270 | 1.067 | 4.275 | 300.717 | 0.24 | | 4.5 | 15.643 | 4.751 | 1.056 | 4.767 | 301.982 | 0.66 | | 5.0 | 14.187 | 5.239 | 1.048 | 5.259 | 302.297 | 0.77 | | 5.5 | 12.970 | 5.730 | 1.042 | 5.751 | 302.169 | 0.72 | | 6.0 | 11.942 | 6.224 | 1.037 | 6.243 | 301.834 | 0.61 | | 6.5 | 11.061 | 6.719 | 1.034 | 6.735 | 301.409 | 0.47 | | 7.0 | 10.301 | 7.216 | 1.031 | 7.227 | 300.952 | 0.32 | | 7.5 | 9.637 | 7.713 | 1.028 | 7.719 | 300.494 | 0.16 | | 8.0 | 9.053 | 8.210 | 1.026 | 8.211 | 300.051 | 0.02 | | 8.5 | 8.535 | 8.708 | 1.025 | 8.703 | 299.629 | −0.12 | | 9.0 | 8.073 | 9.207 | 1.023 | 9.195 | 299.231 | −0.26 | | 9.5 | 7.658 | 9.705 | 1.022 | 9.687 | 298.859 | −0.38 | | 10.0 | 7.284 | 10.204 | 1.020 | 10.179 | 298.511 | −0.50 |
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