TIAN Xue-fei, DONG Man-sheng, PANG Huan-ping, LIN Zhi, NIU Zhong-rong. Dynamic Responses of the Submerged Floating Tunnel Under Combined Internal Wave and Sea Current Effect[J]. Applied Mathematics and Mechanics, 2014, 35(1): 71-80. doi: 10.3879/j.issn.1000-0887.2014.01.008
 Citation: TIAN Xue-fei, DONG Man-sheng, PANG Huan-ping, LIN Zhi, NIU Zhong-rong. Dynamic Responses of the Submerged Floating Tunnel Under Combined Internal Wave and Sea Current Effect[J]. Applied Mathematics and Mechanics, 2014, 35(1): 71-80.

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

##### doi: 10.3879/j.issn.1000-0887.2014.01.008
Funds:  China Postdoctoral Science Foundation（20110490833）
• Rev Recd Date: 2013-11-07
• Publish Date: 2014-01-15
• 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.
•  [1] Remseth S, Leira B J, Okstad K M, Mathisen K M, Haukas T. Dynamic response and fluid/structure interaction of submerged floating tunnels[J]. Computer & Structures,1999,72(4/5): 659-685. [2] Venkataramana K, Yoshihara S, Toyoda S, Aikou Y. Current-induced vibrations of submerged floating tunnels[C]// The 6th International Offshore and Polar Engineering Conference. Vol2. Los Angeles, 1996: 111-118. [3] 麦继婷, 罗忠贤, 关宝树. 波流作用下悬浮隧道张力腿的涡激动力响应[J]. 西南交通大学学报, 2004,39(5): 600-604.(MAI Ji-ting, LUO Zhong-xian, GUAN Bao-shu. Vortex-induced dynamic response of tension legs for submerged floating tunnel under current effect[J]. Journal of Southwest Jiaotong University,2004,39(5): 600-604.(in Chinese）） [4] 葛斐, 惠磊, 洪友士. 波浪场中水中悬浮隧道动力响应的研究[J]. 工程力学, 2008,25(6): 188-194.（GE Fei, HUI Lei, HONG You-shi. Research on dynamic response of submerged floating tunnel to regular wave forces[J]. Engineering Mechanics,2008,25(6): 188-194.（in Chinese）） [5] Perotti F, Barbella G, Pilato M D. The dynamic behaviour of Archimede’s Bridges: numerical simulation and design implications[J]. Procedia Engineering,2010,4: 91-98. [6] Jakobsen B. Design of the submerged floating tunnel operating under various conditions[J]. Procedia Engineering,2010,4: 71-79. [7] Kunisu H. Evaluation of wave force acting on submerged floating tunnels[J]. Procedia Engineering,2010,4: 99-105. [8] ZHANG Shuang-yin, WANG Lei, HONG You-shi. Vibration behaviour and response to an accidental collision of SFT prototype in Qiandao lake(China)[J]. Procedia Engineering,2010,4: 189-197. [9] Kazeminezhad M H, Yeganeh-Bakhtiary A, Etemad-Shahidi A, Baas J H. Two-phase simulation of wave-induced tunnel scour beneath marine pipelines[J]. Journal of Hydraulic Engineering,2012,138(6): 517-529. [10] Wahyuni E, Budiman E, Raka I G P. Dynamic behaviour of submerged floating tunnels under seismic loadings with different cable configurations[J]. IPTEK, The Journal for Technology and Science,2012,23(2): 82-86. [11] Shahmardani M, Mirzapour J, Gheyratmand C, Tariverdilo S. Moving load analysis of submerged floating tunnels[J]. International Journal of Engineering,2012,25(1): 17-24. [12] 秦银刚, 周晓军. 洋流作用下悬浮隧道的混沌行为分析[J]. 铁道学报, 2010,32(4): 146-150.（QIN Yin-gang, ZHOU Xiao-jun. Analysis on chaotic behavior of submerged floating tunnel under ocean currents effect[J]. Journal of the China Railway Society,2010,32(4): 146-150.（in Chinese）） [13] 麦继婷. 波流作用下悬浮隧道的响应研究[D]. 硕士学位论文. 成都: 西南交通大学, 2005.（MAI Ji-ting. The study on responses of a submerged floating tunnel subjected to the wave and current[D]. Master Thesis. Chengdu: Southwest Jiaotong University, 2005.（in Chinese）） [14] Tagata G. Harmonically forced, finite amplitude vibration of a string[J]. Journal of Sound and Vibration,1977,51(4): 483-492.

### Catalog

###### 通讯作者: 陈斌, bchen63@163.com
• 1.

沈阳化工大学材料科学与工程学院 沈阳 110142