Experiments and computations of solitary-wave forces on a coastal-bridge deck. Part II: Deck with girders

Hayatdavoodi, Masoud; Seiffert, Betsy R.; Ertekin, R. Cengiz

doi:10.1016/j.coastaleng.2014.02.007

Cited by 163 publications

(68 citation statements)

References 14 publications

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“…Meng (2008) and Huang and Xiao (2009) calculated the wave loads on specific prototype bridge decks by solving the Reynolds-averaged Navier-Stokes (RANS) equations by use of a computational fluid dynamics (CFD) approach. Recently, solitary and cnoidal wave forces on bridge decks are determined by solving Euler's equations by use of the CFD program OpenFOAM by Seiffert et al (2014), Hayatdavoodi et al (2014) and Hayatdavoodi et al (2015).…”

Section: Introductionmentioning

confidence: 99%

Vulnerability assessment of coastal bridges on Oahu impacted by storm surge and waves

et al. 2015

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Vulnerability assessment of four selected prototype coastal bridges on the island of Oahu, Hawaii, to the combination of storm surge and waves is presented. The maximum storm surge condition is estimated by considering an extensive series of simulated hurricanes making landfall on the island of Oahu, where the bridges are located. For the given extreme environmental conditions, wave loads on the deck of the selected bridges are calculated by use of several theoretical and computational approaches, including Euler's equations (OpenFOAM), the Green-Naghdi nonlinear equations, linear long-wave approximation and existing simplified, design-type force equations. Multiple scenarios of the relative location of the bridge deck and the still-water level are studied to determine the maximum possible wave loads on the bridge decks. Vulnerability of the coastal bridges to storm wave loads is determined by comparing the capacity of the bridge to the wave-induced loads on the structure.

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Section: Introductionmentioning

confidence: 99%

Vulnerability assessment of coastal bridges on Oahu impacted by storm surge and waves

et al. 2015

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“…In order to simplify the model fabrication, the piers of bridge models are assumed to be very thin in [3,4,6]. However, in the research [7,9,12], the effect of the tsunami on a complete pier and deck was neglected. This leads to reduced tsunami wave forces on the bridge models in hydraulic experiments.…”

Section: Introductionmentioning

confidence: 99%

“…They stated that the tsunami pressure in the case of a complete pier and deck was 50% higher than in the case of a stand-alone pier model. Hayatdavoodi et al [12] evaluated the vertical and horizontal load on the bridge deck. The result showed that for shallow water, there was no effect on positive horizontal forces, but there were increases in the negative horizontal forces.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Tsunami Bore Forces on a Coastal Bridge Using an Extreme Learning Machine

Mazinani

Ismail

Shamshirband

et al. 2016

Entropy

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This paper proposes a procedure to estimate tsunami wave forces on coastal bridges through a novel method based on Extreme Learning Machine (ELM) and laboratory experiments. This research included three water depths, ten wave heights, and four bridge models with a variety of girders providing a total of 120 cases. The research was designed and adapted to estimate tsunami bore forces including horizontal force, vertical uplift and overturning moment on a coastal bridge. The experiments were carried out on 1:40 scaled concrete bridge models in a wave flume with dimensions of 24 mˆ1.5 mˆ2 m. Two six-axis load cells and four pressure sensors were installed to the base plate to measure forces. In the numerical procedure, estimation and prediction results of the ELM model were compared with Genetic Programming (GP) and Artificial Neural Networks (ANNs) models. The experimental results showed an improvement in predictive accuracy, and capability of generalization could be achieved by the ELM approach in comparison with GP and ANN. Moreover, results indicated that the ELM models developed could be used with confidence for further work on formulating novel model predictive strategy for tsunami bore forces on a coastal bridge. The experimental results indicated that the new algorithm could produce good generalization performance in most cases and could learn thousands of times faster than conventional popular learning algorithms. Therefore, it can be conclusively obtained that utilization of ELM is certainly developing as an alternative approach to estimate the tsunami bore forces on a coastal bridge.

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“…Roy and Ghosh [8] proposed a simple model to estimate the horizontal force and moment of a floating plate against waves at different depths and found that the force and moment converged with increasing wave period and depth. Hayatdavoodi and Seiffert [9][10][11][12] conducted laboratory experiments and numerical simulations of conidial waves propagating over a submerged floating plate. The vertical force acting on the submerged floating plate appeared to scale linearly with the wave height, while the horizontal force varied nonlinearly with wavelength.…”

Section: Introductionmentioning

confidence: 99%

Submerged Fixed Floating Structure under the Action of Surface Current

Cui

Dai

et al. 2018

Water

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Abstract:The implementation of floating structures has increased with the construction of new sluices for flood control. The overturning moment of floating structure and its influencing factors are the important parameters that determine the structural safety. It is essential to understand the overturning characteristics of these structures in currents. Based on hydrodynamic theory and equilibrium analysis, the hydraulic characteristics of a floating structure are discussed by means of theoretical analysis and experiments. A formula for the overturning moment is developed in terms of the time-averaged pressure on the structure. The corresponding parametric study aims to assess the effects of flow velocities, vertical positions, shape ratios and water levels on the overturning moment. The experimental results show that hydrodynamic factors have a significant influence on the overturning of the structure. Furthermore, a relationship is obtained between the overturning moment and the contributing parameters according to dimensional analysis and the linear fitting method of multidimensional ordinary least squares (OLS). The results predicted by the formula agree with the experimental results, demonstrating the potential for general applicability.

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Experiments and computations of solitary-wave forces on a coastal-bridge deck. Part II: Deck with girders

Cited by 163 publications

References 14 publications

Vulnerability assessment of coastal bridges on Oahu impacted by storm surge and waves

Vulnerability assessment of coastal bridges on Oahu impacted by storm surge and waves

Estimation of Tsunami Bore Forces on a Coastal Bridge Using an Extreme Learning Machine

Submerged Fixed Floating Structure under the Action of Surface Current

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