Modelling the stochastic dynamic behaviour of a pontoon bridge

Case study on existing floating pontoon bridge.Study is based on finite element method and linearized potential theory.Investigation of damping contribution from fluid-structure interaction.Correlation of wave excitation interpreted with respect to geometry.Response effects due to changes in sea state are studied. Herein, a study on the hydrodynamic modelling of pontoon bridges is presented, with the Bergsoysund Bridge as a representative example. The model relies on the finite element method and linearized potential theory. The primary emphasis is placed on the stochastic response analysis within the framework of the power spectral density method. The quadratic eigenvalue problem is solved using a state-space representation and an iterative algorithm. The contribution of the fluid-structure interaction to the overall modal damping is investigated. Response effects due to changes in the sea state are studied. A frequency-independent approximation of the hydrodynamic coefficients is presented and discussed.

[1]  Mohammad Saeed Seif,et al.  Dynamic analysis of floating bridges , 1998 .

[2]  W. Pierson,et al.  A proposed spectral form for fully developed wind seas based on the similarity theory of S , 1964 .

[3]  Ioannis G. Raftoyiannis,et al.  Analytical models of floating bridges under moving loads , 2014 .

[4]  C. H. Beauchamp,et al.  Dynamic Response of Floating Bridge to Wave Forces , 2014 .

[5]  T.J.A. Agar,et al.  Aerodynamic flutter analysis of suspension bridges by a modal technique , 1989 .

[6]  M. Ochi,et al.  NON-GAUSSIAN CHARACTERISTICS OF COASTAL WAVES , 1984 .

[7]  Eugen Skudrzyk.  Wiener’s Generalized Harmonic Analysis , 1971 .

[8]  Ragnar Sigbjörnsson,et al.  Modelling of the stochastic dynamic behaviour of the Bergsøysund Bridge : an application of the power spectral density method , 2014 .

[9]  N. Wiener.  Generalized harmonic analysis , 1930 .

[10]  Chien Ming Wang,et al.  Large Floating Structures: Technological Advances , 2015 .

[11]  Eiichi Watanabe.  Floating Bridges: Past and Present , 2003 .

[12]  Malcolm R Leadbetter,et al.  Stationary and Related Stochastic Processes: Sample Function Properties and Their Applications , 1967 .

[13]  B. Kinsman,et al.  Wind Waves , 2018, New Frontiers in Operational Oceanography.

[14]  Odd M. Faltinsen,et al.  Sea loads on ships and offshore structures , 1990 .

[15]  B. J. Hartz.  Dynamic Response of the Hood-Canal Floating Bridge , 2014 .

[16]  Chien Ming Wang,et al.  Very Large Floating Structures , 2009 .

[17]  Jaak Monbaliu,et al.  COST Action 714. Measuring and analysing the directional spectra of ocean waves , 2005 .

[18]  Hiroshi Tanaka,et al.  Design and construction of a floating swing bridge in Osaka , 2000 .

[19]  Wang Cong,et al.  Hydroelastic analysis of a nonlinearly connected floating bridge subjected to moving loads , 2005 .

[20]  L. Borgman,et al.  Ocean wave simulation for engineering design , 1967 .

[21]  Ragnar Sigbjörnsson,et al.  On stochastic dynamics of floating bridges , 1980 .

[22]  Michael Isaacson,et al.  Frequency Domain Dynamic Analysis of a Floating Bridge , 2004 .

[23]  Torgeir Moan,et al.  Stochastic Dynamics of Marine Structures: Index , 2012 .

[24]  Geir Moe.  Design philosophy of floating bridges with emphasis on ways to ensure long life , 1997 .

[25]  Ragnar Sigbjörnsson.  Stochastic theory of wave loading processes , 1979 .