海洋内波和洋流联合作用下水中悬浮隧道的动力响应

田雪飞; 董满生; 逄焕平; 林志; 牛忠荣

doi:10.3879/j.issn.1000-0887.2014.01.008

海洋内波和洋流联合作用下水中悬浮隧道的动力响应

doi: 10.3879/j.issn.1000-0887.2014.01.008

¹合肥工业大学交通运输工程学院,合肥 230009;²招商局重庆交通科研设计院有限公司, 重庆 400067;³合肥工业大学土木与水利工程学院, 合肥 230009

基金项目: 交通运输部建设科技项目（2013318740050）；中国博士后科学基金特别项目（201003274）；中国博士后科学基金（20110490833）

详细信息

作者简介:
田雪飞（1989—），女，湖北人，硕士生（E-mail: 1606602737@qq.com）

中图分类号: O327; O352
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- 被引次数: 0
出版历程
- 收稿日期: 2013-09-26
- 修回日期: 2013-11-07
- 刊出日期: 2014-01-15

Dynamic Responses of the Submerged Floating Tunnel Under Combined Internal Wave and Sea Current Effect

¹School of Transportation Engineering, Hefei University of Technology, Hefei 230009, P.R.China;²China Merchants Chongqing Communications Research & Design Institute Co., Ltd.,Chongqing 400067, P.R.China;³School of Civil Engineering, Hefei University of Technology, Hefei 230009, P.R.China

Funds: China Postdoctoral Science Foundation（20110490833）

摘要

摘要: 基于势流函数理论建立层化海洋内波流场，采用Morison方法考虑内波和洋流联合作用力，建立悬浮隧道流体相互作用非线性振动数学物理模型．运用Galerkin(伽辽金)法数值求解振动微分方程，研究海洋内波和洋流共同作用下水中悬浮隧道的多模态动力响应行为．通过对拟建隧道实例的计算分析，结果表明：第一阶模态对位移响应贡献最大，在内波、洋流联合作用下，海洋内波的作用不可忽视，使第一、三阶模态的幅值都有大幅度增加，且反映出强非线性．研究成果为悬浮隧道结构荷载分析及复杂环境下海洋工程结构物所受环境荷载的研究提供有益探讨.
- 水中悬浮隧道 /
- 海洋内波 /
- 洋流 /
- 势流理论 /
- Morison公式
Abstract: The stratified ocean internal wave flow field was established based on the potential flow function theory. The joint force by internal wave and sea current was considered with the Morison method to establish a nonlinear vibration mathematical-physical model of tunnel-fluid interaction. The corresponding vibration differential equations were solved numerically with the Galerkin method to study the multimodal dynamic response behaviors of the submerged floating tunnel under combined internal wave and sea current effect. According to the calculation and analysis of a practical example on the proposed tunnel, the first order mode contributed most of the displacement response.The effect of internal wave on the the joint force by internal wave and sea current could not be ignored, it resulted in a substantial increase of the response amplitudes of the first and third order modes and made the responses strongly nonlinear. The research results provide helpful discussions for the structural load analysis of submerged floating tunnels and for the study on environmental loads upon ocean engineering structures in a complex environment.
- submerged floating tunnel /
- ocean internal wave /
- sea current /
- potential flow theory /
- Morison formula

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参考文献(14)

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