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| Analysis of the Responses of Submerged Floating Tunnel and Its Supporting Structure |
| MAI Ji—ring1，YANG Xian—cheng2，GUAN Bao—shu1 |
| 1．Southwest Jiaotong University，Chengdu，Sichuan 61003，China；2．China Shipbuilding Scientific and Technical Information Center，Shanghai 200011，China |
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Abstract Research purposes:A Submerged Floating Tunnel(SFY)is a new type of submarine structure and is kept under the water by a series of supporting structure．As SFT is directly impacted by water．it is necessary to analyze and calculate the responses of structure system to the actions of water flow and wave．In this paper，SFT and its support system are analyzed with a finite element model of spatial beam system．By applying beam element CR formulation and considering the interaction between water and structure，the calculation and analysis are made for the influences of crossing span，the shape of tunnel CROSS section and form of support on the response of structure system and axial stress of the support component
Research conclusions: The results show：(1)The differences of the static response in displacement of the tunnel and axial stress of support component are fairly small as the crossing span increases from 2 000 m to 4 000 m，but the dynamic response increase notably．(2)The static response of tunnel with an elliptical cross section is extreme smaller than that of tunnel with a circular cross section and the dynamic response of former is extreme bigger than that of the latter．(3)The response of SFTwith mooring tether anchorage is extreme smaller than that of sFr with tension leg anchorage．
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Received: 20 February 2009
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[1] 麦继婷,杨显成,关宝树.悬浮隧道在波浪作用下的动力 响应[J].铁道工程学报, 2007(3): 45 -49.
[2] O.C.津基威兹,R.W.路易斯,K.G.斯塔格.近海工程数 值方法[M ].大连工学院水利系,海洋工程研究所,译. 北京:海洋出版社, 1984.
[3] C.A.布雷比亚, S.瓦尔克.近海结构动力分析[M ].边 启光,译.北京:海洋出版社, 1985.
[4] 潘永仁.悬索桥的几何非线性静力分析及工程控制 [D ].上海:同济大学, 1996.
[5] KuoMoHsiao, Horng JannHorng, Yeh Ren Chen. A co- rotational procedure that handles large rotation of spatial beam structures[J]. Computer& Structures, 1987, 27(6): 769 -781.
[6] 刘北辰.工程计算力学-理论与应用[M ].北京:机械 工业出版社, 1994.
[7] Toshiyuki Fuji.i Submerged floating tunnels project in Funka Bay Design and Execution[C] //Proceedings of International Conference on Submerged floating tunne,l 1996: 15 -34.
[8] 麦继婷.波浪作用下悬浮隧道的响应研究[D ].成都:西 南交通大学, 2005.
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2009, Vol. 26 
