Experimental investigation of tsunami bore-induced forces and pressures on skewed box section bridges

Farvizi, Farzad; Melville, Bruce W.; Shamseldin, Asaad Y.; Shafiei, Seyedreza; Hendi, Ehsan

doi:10.1016/j.oceaneng.2021.108730

Cited by 21 publications

(1 citation statement)

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“…24 Numerous laboratory experiments and numerical simulations have quantitatively studied the pressure distribution and force of tsunami flows on structures. [25][26][27][28] Researchers at the Hinsdale Wave Research Laboratory (HWRL) at Oregon State University conducted extensive largescale physical model experiments on elevated structures subjected to storm waves, surges, and tsunami-like waves. 26,[29][30][31] Kihara et al [32][33][34] conducted a series of physical model experiments at the Central Research Institute of the Electric Power Industry (CRIEPI, Japan) using a large wave flume to produce tsunami inundations and studied their impacts on complex topographies and buildings.…”

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confidence: 99%

Tidal bore impact pressures on a trestle pier in the Qiantang River Estuary, China

Pan

2022

Advances in Mechanical Engineering

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Tidal bores are natural phenomena resulting from the nonlinear distortion of tidal waves and propagate upstream with the incoming tide. The Qiantang River tidal bore is world-famous for its great momentum which can occasionally inflict major damage to infrastructures in the Qiantang River Estuary, China. Existing design guidelines are not fit for accurately estimating the tidal bore loads on elevated structures. This study investigated the impact of tidal bores on the trestle piers of a river-crossing bridge using field tests. Based on the measured data, empirical formulas for the maximum impact pressure in four zones across the trestle were derived, and the influence of the Froude number on the peak pressure was determined. Results show that the peak pressure of the instantaneous impulsive state of the bore can exceed the pressure of the quasi-steady state 10-fold. The maximum dynamic impact pressure on the seaward side of the pier occurs at the base of the bore. The peak dynamic pressure accounts for 54%, 45%, and 20% of the total pressure for Froude numbers of 1.26, 1.12, and 1.04, respectively. The results of this study can serve as valuable references for the load design of structures against tidal bores and tsunami-like waves.

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