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| 水中结构的动力响应分析 | |
| 引用本文： | 雷凡,杨吉新,刘惠,方伟. 水中结构的动力响应分析[J]. 武汉理工大学学报(交通科学与工程版), 2011, 35(1). DOI: 10.3963/j.issn.1006-2823.2011.01.034 |
| 作者姓名： | 雷凡 杨吉新 刘惠 方伟 |
| 作者单位： | 1. 武汉理工大学交通学院,武汉,430063 2. 湖北鄂东长江公路大桥有限公司,黄石,430030 |
| 基金项目： | 国家863计划项目资助(批准号:2007AA11Z107) |
| 摘 要： | 将海洋悬跨管道、悬浮隧道等结构简化为简支梁,将水流引起漩涡泄放产生的升力简化为简谐荷载,考虑流固耦合效应研究水中结构的动力响应.在模态分析后,根据结构的自振频率范围选定简谐荷载的强制频率范围,进行谐响应分析得到响应-频率曲线,选取适当频率进行瞬态分析,得到响应的时间历程曲线.比较分析不同长度的结构在水和空气中的响应,分析表明:同一结构在水中的各阶自振频率小于空气中的自振频率;结构在水中的响应较空气中大;当简谐荷载以结构的一、二、三阶频率激振时,结构振动的位移幅值依次减小. |
| 关 键 词： | 水中结构 流固耦合 简谐荷载 动力响应 |
Dynamic Response Analysis of Submarine Structures |
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| Lei Fan,Yang Jixin,Liu Hui,Fang Wei. Dynamic Response Analysis of Submarine Structures[J]. journal of wuhan university of technology(transportation science&engineering), 2011, 35(1). DOI: 10.3963/j.issn.1006-2823.2011.01.034 | |
| Authors: | Lei Fan Yang Jixin Liu Hui Fang Wei |
| Affiliation: | Lei Fan1) Yang Jixin1) Liu Hui1) Fang Wei2)(School of Transportation,Wuhan University of Technology,Wuhan 430063,China)1)(Hubei Edong Changjiang Expressway Bridge Company Limited,Huangshi 430030,China)2) |
| Abstract: | The structures such as free spanning submarine pipelines and submerged floating tunnels were simplified as simply supported beams.And the vortex lift force caused by current was simplified as harmonic load.The dynamic response of submarine structures with fluid-solid interaction was studied.The forcing frequency range was selected according to the range of nature frequencies of structures after modal analysis and the frequency response curve was gotten by harmonic analysis.Then the proper frequencies were c... |
| Keywords: | submarine structure fluid-solid interaction harmonic load dynamic response |
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