Wave forces on adjacent floating bridges

1986 ◽  
Vol 8 (2) ◽  
pp. 67-75 ◽  
Author(s):  
P. McIver
Keyword(s):  
Wave Forces ◽  
Floating Bridges

scholarly journals FORCES ON A PONTOON IN THREE DIMENSIONAL WAVES

1970 ◽  
Vol 1 (12) ◽  
pp. 101
Author(s):  
J. Eie ◽  
A. Tratterberg ◽  
A. Torum
Keyword(s):  
Three Dimensional ◽  
Wave Pattern ◽  
Wave Forces ◽  
Deterministic Method ◽  
Laboratory Equipment ◽  
Floating Breakwater ◽  
Floating Bridges ◽  
Dimensional Wave

Wave forces on a long pontoon (floating breakwater, floating bridges etc.) depend to a large extent on the three dimensional wave pattern. There is no deterministic method for calculating wave forces for such structures in a three dimensional sea and laboratory equipment for testing long structures in irregular three dimensional waves does hardly exist.

Retrofitting of Floating Bridges With Perforated Outer Cover for Mitigating Wave-Induced Responses

2018 ◽  
Author(s):  
K. G. Vijay ◽  
T. Sahoo
Keyword(s):  
Structural Parameters ◽  
Domain Boundary ◽  
Wave Theory ◽  
Hydrodynamic Characteristics ◽  
Wave Forces ◽  
Vertical Force ◽  
Integer Multiple ◽  
Bridge Structures ◽  
Floating Bridges ◽  
Wave Induced

An investigation has been carried out based on multi-domain boundary element method to analyze the mitigation of wave-induced hydrodynamic loads on a pair of floating rectangular bridges by retrofitting the structures with external porous plates. The study is based on the assumptions of small amplitude water wave theory in finite water depth with the characteristics of wave-body interactions remain unaltered along the bridge. Wave past porous structure is modelled using Darcy’s law. Various hydrodynamic characteristics are studied by analyzing the wave forces acting on the floating bridges and the retrofitted porous structures for different wave and structural parameters. With the introduction of a retrofit, the horizontal force on the bridge reduces irrespective of wave and structural parameters, whilst vertical force increases under certain conditions. Moreover, when the distance between the bridges is an integer multiple of half of the wavelength of the incident waves, both the bridges experience optima in horizontal and vertical wave forces, with both these forces being 180° out of phase. The present study is expected to be useful in the design of efficient bridge structures which will reduce wave-induced hydrodynamics loads on the structure and thus enhance the service life of floating bridges.

scholarly journals A Comparison Study on the Hydroelasticity of Two Types of Floating Bridges in Inhomogeneous Wave Conditions

2018 ◽  
Author(s):  
Shuai Li ◽  
Shixiao Fu ◽  
Wei Wei ◽  
Torgeir Moan
Keyword(s):  
Time Domain ◽  
Linear Time ◽  
Reaction Force ◽  
Bending Moment ◽  
Horizontal Displacement ◽  
Wave Forces ◽  
Inhomogeneous Wave ◽  
Curved Bridge ◽  
Floating Bridges ◽  
Wave Conditions

Due to the interaction between elastic structural deformations and fluid motions, the responses of floating bridges should be analyzed by hydroelasticity methods. We firstly employed a linear time-domain approach, based on the discrete-module-based hydroelastic method to investigate the responses of two surface bridge concepts under first order wave forces, a straight bridge with mooring system and an end-anchored curved bridge. The results show that the displacement of the curved bridge is smaller, compared with the straight bridge. However, the reaction force and the vertical bending moment of the curved bridge are larger. Furthermore, a nonlinear time-domain hydroelasticity approach for analysis of the floating bridge under nonlinear wave forces within inhomogeneous wave conditions is established. Finally, a comparison between the linear and nonlinear responses of the moored straight bridge is made. The results show that the nonlinearity of the wave excitation forces has a significant influence on the mooring forces and horizontal displacement.

The Concept of the Optimum Alignment of Discharge Pipelines Due to the Minimization of the Wave Forces

1992 ◽  
Vol 25 (9) ◽  
pp. 211-216
Author(s):  
A. Akyarli ◽  
Y. Arisoy
Keyword(s):  
Wave Height ◽  
Wave Force ◽  
Wave Forces ◽  
Wave Direction ◽  
Incoming Wave ◽  
Pipeline Route ◽  
Optimum Alignment ◽  
The Cost ◽  
Resultant Wave

As the wave forces are the function of the wave height, period and the angle between the incoming wave direction and the axis of the discharge pipeline, the resultant wave force is directly related to the alignment of the pipeline. In this paper, a method is explained to determine an optimum pipeline route for which the resultant wave force becomes minimum and hence, the cost of the constructive measures may decrease. Also, the application of this method is submitted through a case study.

scholarly journals Characteristics of Breaking Wave Forces on Piles over a Permeable Seabed

2021 ◽  
Vol 9 (5) ◽  
pp. 520
Author(s):  
Zhenyu Liu ◽  
Zhen Guo ◽  
Yuzhe Dou ◽  
Fanyu Zeng
Keyword(s):  
Wave Breaking ◽  
Stokes Equations ◽  
Slope Angle ◽  
Wave Force ◽  
Breaking Waves ◽  
Offshore Wind ◽  
Secondary Wave ◽  
Wave Forces ◽  
Breaking Wave ◽  
Breaking Wave Forces

Most offshore wind turbines are installed in shallow water and exposed to breaking waves. Previous numerical studies focusing on breaking wave forces generally ignored the seabed permeability. In this paper, a numerical model based on Volume-Averaged Reynolds Averaged Navier–Stokes equations (VARANS) is employed to reveal the process of a solitary wave interacting with a rigid pile over a permeable slope. Through applying the Forchheimer saturated drag equation, effects of seabed permeability on fluid motions are simulated. The reliability of the present model is verified by comparisons between experimentally obtained data and the numerical results. Further, 190 cases are simulated and the effects of different parameters on breaking wave forces on the pile are studied systematically. Results indicate that over a permeable seabed, the maximum breaking wave forces can occur not only when waves break just before the pile, but also when a “secondary wave wall” slams against the pile, after wave breaking. With the initial wave height increasing, breaking wave forces will increase, but the growth can decrease as the slope angle and permeability increase. For inclined piles around the wave breaking point, the maximum breaking wave force usually occurs with an inclination angle of α = −22.5° or 0°.

Characteristics of wave forces on pile group foundations for sea-crossing bridges

2021 ◽  
Vol 235 ◽  
pp. 109299
Author(s):  
Zhenguo Wang ◽  
Wenliang Qiu
Keyword(s):  
Pile Group ◽  
Wave Forces
Sign in / Sign up

Export Citation Format

Share Document