Experimental Investigation of Wave Forces on Coastal Bridge Decks Subjected to Oblique Wave Attack

Fang, Qinghe; Hong, Rongcan; Guo, Anxin; Li, Hui

doi:10.1061/(asce)be.1943-5592.0001373

Cited by 41 publications

(8 citation statements)

References 23 publications

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“…Bradner et al (2011) made a concrete bridge model that consists of six AASHTO IIItype rib beans and a bridge deck with a thickness of 5 cm, which was used for a wave model test that was carried out in a wave tank at the University of Oregon with a large scale ratio of 1:5; in which the wave-induced horizontal and vertical forces on the bridge model for different wave parameters were measured. Limited theoretical investigations have been conducted on the wave loads of bridges (Fang et al 2019).Nonetheless, numerous studies of horizontal wave loads on piers (Morison et al 1950)and jetties (Mcconnell et al 2003) have been conducted, while others have investigated vertical wave loads on cylindrical components, at plates (French 1969), decks (Kaplan 1992), and offshore platforms. As a result, earlier theoretical approaches for calculating wave loads on other types of structures, such as exposed jetties and platforms, were extended to estimate the wave force operating on the bridge superstructure (Aguíñiga et al 2006,Aguíñiga et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling and Hydrodynamic Analysis of an Offshore Bridge Superstructure

Zheng

Zhao

et al. 2022

Preprint

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This study deals with the numerical modeling and hydrodynamic analysis of an offshore bridge superstructure. A scaled numerical model is established and numerical analysis with a focus on hydrodynamics is conducted. The numerical model and methods are validated by the comparisons of the model tests in various conditions. Second-order wave loads on the superstructure of the offshore bridge in different motion directions are calculated, and they are compared with the first-order wave loads to quantify the effects of the second-order wave loads. Then, a full-scale numerical model of the offshore bridge substructure is established; the hydrodynamic analysis of the full-scale numerical model is performed. In addition, the experimental results of the full-scale model are estimated based on the model similarity law and model test results of the scaled model. The numerical results calculated based on the two methods for the full-scale model are comprehensively compared in different load cases. The results and findings of this work greatly facilitates the design and numerical analysis of offshore bridge superstructures.

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Section: Introductionmentioning

confidence: 99%

Numerical Modeling and Hydrodynamic Analysis of an Offshore Bridge Superstructure

Zheng

Zhao

et al. 2022

Preprint

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“…Over the last two decades, numerous research efforts have been devoted to the use of computational fluid dynamics (CFD) method for investigating the wave forces acting on bridge decks [13][14][15][16][17]. The lateral restraining stiffness effect on bridge deck wave interactions was studied by embedding a custom code into ANSYS Fluent [18].…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Surrogate Model for the Prediction of Solitary Wave Forces on the Coastal Bridge Decks

Wang

Xue

2021

Infrastructures

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To facilitate the establishment of the probabilistic model for quantifying the vulnerability of coastal bridges to natural hazards and support the associated risk assessment and mitigation activities, it is imperative to develop an accurate and efficient method for wave forces prediction. With the fast development of computer science, surrogate modeling techniques have been commonly used as an effective alternative to computational fluid dynamics for the establishment of a predictive model in coastal engineering. In this paper, a hybrid surrogate model is proposed for the efficient and accurate prediction of the solitary wave forces acting on coastal bridge decks. The underlying idea of the proposed method is to enhance the prediction capability of the constructed model by introducing an additional surrogate to correct the errors made by the main predictor. Specifically, the regression-type polynomial chaos expansion (PCE) is employed as the main predictor to capture the global feature of the computational model, whereas the interpolation-type Kriging is adopted to learn the local variations of the prediction error from the PCE. An engineering case is employed to validate the effectiveness of the hybrid model, and it is observed that the prediction performance (in terms of residual mean square error and correlation coefficient) of the hybrid model is superior to the optimal PCE and artificial neural network (ANN) for both horizontal and vertical wave forces, albeit the maximum PCE degrees used in the hybrid model are lower than the optimal degrees identified in the pure PCE model. Moreover, the proposed hybrid model also enables the extraction of explicit predictive equations for the parameters of interest. It is expected that the hybrid model could be extended to more complex wave conditions and structural shapes to facilitate the life-cycle structural design and analysis of coastal bridges.

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“…During a tsunami, it is necessary to determine the waveinduced load on the superstructure of a bridge. e vertical layout and cross section of bridge superstructure are diverse, so it is difficult to have a unified wave force calculation model, so the direct test of wave force is the most effective method to evaluate the magnitude and law of wave force on bridge structure [5][6][7]. Cuomo et al [5] measured the wave force and pressure of the wharf with the protruding structure on a 1 : 25 scale model and studied the physical loading process in the test, which provided new guidance for the design of wave load on the main girder.…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance of Offshore Piers under Wave Impact and Chloride Ion Corrosion Environment

Yin

Zhang

2021

Shock and Vibration

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Offshore bridges may suffer from chloride ion corrosion, tsunami wave impact, and earthquake. However, the coupling effects of multiple factors have not been fully considered. This paper studied multiple degradation effects on the seismic performance of offshore piers considering tsunami wave impact, chloride ion corrosion, and their interaction. Firstly, through the scale model test of tsunami wave flume, the wave force of box girder structures and piers under different tsunami wave conditions is measured. Then, according to the corrosion characteristics of coastal chloride salts on reinforced concrete bridge piers, the corrosion parameters is selected by Latin hypercube sampling, and the influence of corrosion expansion and cracking of bridge pier cover on the chloride ion corrosion process is considered to modify the degradation model of corroded reinforced concrete materials. Finally, the wave load measured by the test is converted by the similarity criterion of the fluid mechanic test and loaded into the ABAQUS full-bridge model, and the pier after the tsunami wave is evaluated by the pushover analysis. The bearing capacity and lateral stiffness of the corroded pier before and after different tsunami waves are compared. The results show that the lateral bearing capacity and stiffness of bridge piers are, respectively, decreased by 27.6% and 6.2% after 30 years of service. Without corrosion, the lateral bearing capacity and stiffness of piers were, respectively, reduced by 11.45% and 10.6% after HXB-5 wave impact. After 30 years of service, the lateral bearing capacity and stiffness of bridge piers are, respectively, reduced by 41.8% and 22.5% under the combined action of corrosion and HXB-5 wave impact. It is found that the coupling effects of multiple degradation factors were more significant than the simple superposition ones. Therefore, the coupling effect of multiple factors should be considered in practical engineering.

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Experimental Investigation of Wave Forces on Coastal Bridge Decks Subjected to Oblique Wave Attack

Cited by 41 publications

References 23 publications

Numerical Modeling and Hydrodynamic Analysis of an Offshore Bridge Superstructure

Numerical Modeling and Hydrodynamic Analysis of an Offshore Bridge Superstructure

A Hybrid Surrogate Model for the Prediction of Solitary Wave Forces on the Coastal Bridge Decks

Seismic Performance of Offshore Piers under Wave Impact and Chloride Ion Corrosion Environment

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