Effects of fundamental structure parameters on dynamic responses of submerged floating tunnel under hydrodynamic loads

• Published in: Acta mechanica Sinica Vol. 25; no. 3; pp. 335 - 344
• Main Authors: Long, Xu, Ge, Fei, Wang, Lei, Hong, Youshi
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.06.2009
• Subjects: Classical and Continuum Physics; Computational Intelligence; Engineering; Engineering Fluid Dynamics; Research Paper; Theoretical and Applied Mechanics; 刚度系数; 动态响应; 悬浮隧道; 有线电视系统; 水力负荷; 水动力荷载; 沸水式反应器; 结构参数; Structural damp; Tunnel net buoyancy; Hydrodynamic load; Cable stiffness coefficient; Submerged floating tunnel; Buoyancy-weight ratio
• ISSN: 0567-7718; 1614-3116
• DOI: 10.1007/s10409-009-0233-y

This paper investigates the effects of structure parameters on dynamic responses of submerged floating tunnel （SFT） under hydrodynamic loads. The structure parameters includes buoyancy-weight ratio （BWR）, stiffness coefficients of the cable systems, tunnel net buoyancy and tunnel length. First, the importance of structural damp in relation to the dynamic responses of SPT is demonstrated and the mechanism of structural damp effect is discussed. Thereafter, the fundamental structure parameters are investigated through the analysis of SFT dynamic responses under hydrodynamic loads. The results indicate that the BWR of SFT is a key structure parameter. When BWR is 1.2, there is a remarkable trend change in the vertical dynamic response of SFT under hydrodynamic loads. The results also indicate that the ratio of the tunnel net buoyancy to the cable stiffness coefficient is not a characteristic factor affecting the dynamic responses of SFT under hydrodynamic loads.