Initial Design of a Double Curved Floating Bridge and Global Hydrodynamic Responses Under Environmental Conditions (original) (raw)
Related papers
Mathematical Problems in Engineering, 2021
In this paper, a numerical study is presented to investigate wave force on the connections of main parts of a side-anchored straight floating bridge concept for the Bjørnafjorden fjord crossing. The floating bridge is supported by 18 pontoons, and three groups of mooring lines are employed to restrain the bridge against horizontal loads and increase its transverse stiffness. The created wave forces at the connections of pontoon-column and column-girder of the floating bridge considering the effects of short-crested and long-crested waves, varying wave direction, hydrodynamic interaction between pontoons, and mooring system are analyzed. It is found that short-crested and long-crested waves depending on their direction decrease or increase the wave forces on the joints. Considering that the effect of hydrodynamic interaction between pontoons can increase or reduce the wave forces and moments created in the joints, which means the neglect of the hydrodynamic interaction effects betwee...
Flexible-Floating Bridges: An Innovative Solution for Waterfront Regeneration in Congested Cities
This paper introduces floating bridges that can be utilized in planning for integrated and comprehensive transportation networks that would create and enhance the public use and enjoyment of the waterfront in congested cities. A numerical model for estimating the dynamic response of flexible floating bridges under moving trucks is The floating structure is modeled by 2D beam elements. whereas the fluid domain is modeled by 2D constant proposed. The method of solution is based on the combined use of Finite Element and Boundary Element methods. boundary elements. First, in order to obtain the hydrodynamic forces (added mass and radiation damping); the fluid-coupled free vibration analysis is carried out. Then, direct time integration is adopted to solve the equation of motion for structural system, A FORTRAN program has been developed and its results are testified with exact-analytical solution for floating beam under moving concentrated load. Two types of flexible floating structures...
Volume 7A: Ocean Engineering, 2018
The hydrodynamic interaction between floating bridge pontoons and its impact on the bridge global responses are investigated in the current study. The global model for end-anchored floating bridge for Bjørnefjord crossing is modelled in ORCINA-OrcaFlex. Forty-six pontoons are used to support the bridge, with a centerline distance of 100m between two pontoons. Two models are setup for comparison: (1) The OrcaFlex model with hydrodynamic coefficients of pontoons without hydrodynamic interaction; (2) The OrcaFlex model with hydrodynamic interaction coefficients, which were calculated by ANSYS-AQWA. Firstly, a case study of hydrodynamic interaction effects on added mass, potential damping and diffraction force is given, showing that the piston and sloshing modes have strong correlation with the resonances. Then two sea states were run on the two models with and without hydrodynamic interaction effects. The first order wave effects are included in the analysis. The observed extremes of t...
PARAMETRIC STUDY OF THE STRUCTURAL BEHAVIOR OF HORIZONTALLY CURVED BRIDGE DECK
PARAMETRIC STUDY OF THE STRUCTURAL BEHAVIOR OF HORIZONTALLY CURVED BRIDGE DECK, 2016
This paper investigates the impact of the following parameters on the structural behavior of horizontally curved bridge decks: A-The analytical modeling method, B-The radius of curvature, C-The number of internal cross girders, and D-The thickness of deck slab. The results of the different analytical modeling technique are compared to experimental results by conducting a load test on a physical model at the structural lab of the American University in Cairo cairo as a part of a research for curved bridges directed by the author.The remaining parameters of this study are investigated using a typical curved bridge deck commonly used in real projects. The impact of these parameters is addressed by the change in straining actions and the deflection of the main girders of the bridges.