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EFFECT OF escape device FOR SUBMERGED FLOATING TUNNEL (SFT) ON HYDRODYNAMIC LOADS APPLIED TO SFT

Journal of Hydrodynamics 2012年第4期24卷 609-616页

作者： DONG Man-sheng MIAO Guo-ping YONG Long-chang NIU Zhong-rong PANG Huan-ping HOU Chao-qun School of Civil Engineering Hefei University of Technology Hefei 230009 China State Key Laboratory of Ocean Engineering -Shanghai JiaoTong Universityl Shanghai 200030 China School of Transportation Engineering Hefei University of Technology'Hefei 230009 China

This paper presents a potential approach to settle the problem of surviving major safety accidents in Submerged Floating Tunnel （SFT） that detachable emergency escape devices are set up outside SFT. The Computational Fluid Dynamics （CFD） technology is used to investigate the effect of emergency escape devices on the hydrodynamic load acting on SFT in uniform and oscillatory flows and water waves by numerical test. The governing equations, i.e., the Reynolds-Averaged Navier-Stokes （RANS） equations and k - ε standard turbulence equations, are solved by the Finite Volume Method （FVM）. Analytic solutions for the Airy wave are applied to set boundary conditions to generate water wave. The VOF method is used to trace the free surface. In uniform flow, hydrodynamic loads, applied to SFT with emergency escape device, reduce obviously. But, in oscillatory flow, it has little influence on hydrodynamic loads acting on SFT. Horizontal and vertical wave loads of SFT magnify to some extend due to emergency escape devices so that the influence of emergency escape devices on hydrodynamic loads of SFT should be taken into consideration when designed.

关键词： Submerged Floating Tunnel (SFT) conceptual design flow Airy wave escape device hydrodynamic load

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Discussion and Research on the High Building Fire escape devices and TRIZ

Discussion and Research on the High Building Fire Escape Dev...

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第18届工业工程与工程管理国际学术会议

作者： Guo-rong WU,Yue LI,Chuan-long LIU Nanchang University,Nanchang Jiangxi 330031

It discusses the status quo of escape system under the trend of the increasingly high building fire nowadays,and researches its feasibility and operation advantages and disadvantages with TRIZ *** makes relevant investigation and research in combination with a part of urban high buildings and the latest escape ***,it makes certain preconceptions and prospects on the development of the future high building fire escape system.

关键词： TRIZ Theory High Building Fire Creative Design escape device

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