A comparative study of the first and second order theories and Goda's formula for wave-induced pressure on a vertical breakwater with irregular waves

Gurhan, G.; Ünsalan, Deniz

doi:10.1016/j.oceaneng.2005.02.011

Cited by 5 publications

(2 citation statements)

References 8 publications

(10 reference statements)

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“…The following paragraphs discuss how the additional type (c) uncertainties relate to the already present type (a) and (b) uncertainties. [9,11,42,[45][46][47][48][49]. Probably the most extended studies were those performed by Meer et al [45,46], who quantified model uncertainties in Goda's original wave load formula on the basis of a large number of experiments carried out at several hydraulic institutes.…”

Section: Comparison Of Model Uncertaintiesmentioning

confidence: 99%

“…It is however known from many references that the trapezoidal pressure distribution predicted by GT deviates from the one observed in reality, see e.g., Van Maris [51] for pulsating wave loads and and Hofland et al [41] for impact wave loads. Although many studies investigated model uncertainties of the type (a) and (b) inherent to GT [9,11,42,[45][46][47][48][49], most of these studies focused on resultant forces or wave pressures at still water level only. For an appropriate application of GT to slender hydraulic structures it is therefore recommended to conduct similar studies on the level of wave pressures as well.…”

Section: Final Remarkmentioning

confidence: 99%

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Applicability of the Goda–Takahashi Wave Load Formula for Vertical Slender Hydraulic Structures

Meinen¹,

Maria

Hofland

et al. 2020

JMSE

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Vertical slender hydraulic structures such as sluices, navigation locks, or storm-surge barriers are often dynamically loaded by waves. For a safe and economic design, an accurate description of the wave loads is needed. A widely used formula for this purpose is the Goda–Takahashi wave load formula (GT). It was derived for the assessment of gravity-based caisson breakwaters. Due to its many advantages, the formula is also often employed for the assessment of vertical slender hydraulic structures, although its applicability to those type of structures was never fully demonstrated. This study provides insights in the applicability of GT for vertical slender hydraulic structures. This is done based on a literature review on the historical backgrounds of GT, and an investigation of several case-studies. In the case-studies, the equivalent-static wave loads for caisson breakwaters in scope of GT are compared with those for vertical slender hydraulic structures. The results show that GT can safely be applied for vertical slender hydraulic structures loaded by pulsating wave loads, but that systematic over- or under-estimations are expected for breaking or impact wave loads. For individual cases, differences up to 200% were obtained. These large over- or under-estimations underline the need for an improvement of the current design tools for vertical slender hydraulic structures loaded by breaking or impact wave loads.

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