横风作用下大跨度人行悬索桥振动使用性研究
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唐剑明,谢旭
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Investigation on vibration serviceability of long-span suspension footbridge under crosswind
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Jian-ming TANG,Xu XIE
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| 表 1 精细模型与等效模型动力特性对比 |
| Tab.1 Comparison of dynamic characteristics between fine model and equivalent model |
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| 振型 | fnat /Hz | 偏差/% | | 精细模型 | 等效模型 | | 1阶对称侧弯 | 0.160 2 | 0.162 3 | 1.3 | | 1阶反对称侧弯与扭转 | 0.222 3 | 0.221 0 | −0.6 | | 1阶反对称竖弯 | 0.247 9 | 0.235 5 | −5.0 | | 1阶对称竖弯 | 0.282 7 | 0.275 4 | −2.6 | | 1阶对称侧弯与扭转 | 0.288 4 | 0.305 9 | 6.0 | | 2阶对称竖弯 | 0.394 6 | 0.381 8 | −3.2 | | 1阶反对称扭转 | 0.398 2 | 0.382 5 | −4.0 | | 1阶对称扭转 | 0.409 4 | 0.398 3 | −2.7 | | 2阶对称扭转 | 0.520 7 | 0.503 5 | −3.3 |
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