Numerical simulations of lateral restraining stiffness effect on bridge deck–wave interaction under solitary waves

Xu, Guoji; Cai, C.S.

doi:10.1016/j.engstruct.2015.07.031

Cited by 73 publications

(37 citation statements)

References 25 publications

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“…For the vertical forces, the current method overestimates the values for small wave heights, which is probably attributed to the entrapped air between the girders underneath the deck slab. In the present 2D simulations, the entrapped air cannot escape in the direction normal to the wave propagating direction (longitudinal direction of the bridge deck), while in the experiment the entrapped air can be released in this direction in a timely manner [10,13,24].…”

Section: Deck Force Prediction and Verification With A Flat Deck Modelmentioning

confidence: 70%

“…is chosen for the transient flow, and the Pressure-Implicit with Splitting of Operators (PISO) scheme is utilized for the pressure-velocity coupling method. Further details of the numerical setups can be found in Xu and Cai [13].…”

Section: Wave Generation and Verification With Analytical Resultsmentioning

confidence: 99%

“…Therefore, the SDOF system serves well for the demonstration purpose of the present study. The details regarding the realization and verification of the mass-spring-damper system can be found in Xu and Cai [13] and Xu et al [14].…”

Section: Realization Of the Mass-spring-damper Systemmentioning

confidence: 99%

“…However, most of these studies focus on the rigid setups where the bridge model is fixed in the wave flume/tank experimentally and computationally. Very few studies have investigated the dynamic characteristics (flexible setups) of the bridge deck-wave interaction [9,[13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…The structural vibration induced by solitary waves decreases all the way to 0, whereas the vibration induced by periodical waves during one wave period may be further incited by the following incident waves. Hence, based on previous studies considering solitary wave actions on flexible bridge decks [13], the present study specifically investigates the flexible bridge decks under one typical periodical wave model -Stokes 2 nd order wave.…”

Section: Introductionmentioning

confidence: 99%

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Numerical investigation of the lateral restraining stiffness effect on the bridge deck-wave interaction under Stokes waves

Cai

2017

Engineering Structures

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This paper addresses one fundamental question on the bridge deck-wave interaction: do the bridge deck vibrations result in smaller wave forces on deck? In other words, are there any benefits to the coastal bridge structures vulnerable to waves once the bridge superstructure (deck) is allowed to vibrate to some extent, similar to the lateral restraining setups adopted to bridges in seismic areas. Based on a methodology of the mass-spring-damper system using a dynamic mesh updating technique proposed in previous studies, a wave model based on the Stokes 2 nd order wave theory is applied and verified with analytical solutions and experimental measurements in the literature, assuring a valid prediction in the following parametric study. The shear stress transport (SST) k-ω model is used as the turbulence closure for the RANS equations in order to capture the turbulence effects in the bridge deck-wave interaction. In the parametric study, general characteristics of the structural vibration and the wave forces are observed and discussed. The obtained results show that increasing the structural flexibilities in the transverse/lateral direction does not necessarily benefit the bridge structure with an obvious force reduction for both the horizontal and vertical forces on the bridge superstructure. However, this will unfortunately lead to larger horizontal forces on the interface between the bridge super and substructure and larger dynamic amplification factors for the bridge decks.

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Section: Deck Force Prediction and Verification With A Flat Deck Modelmentioning

confidence: 70%

Section: Wave Generation and Verification With Analytical Resultsmentioning

confidence: 99%