Dynamic pressures on curved front seawall models under random waves

Anand, K.V.; Sundar, V.; Sannasiraj, S. A.

doi:10.1016/s1001-6058(09)60249-3

Cited by 6 publications

(4 citation statements)

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“…Furthermore, introducing these overhangs with the existing structure could reduce the freeboard depth [19]. In addition, the benefits of altering the seaward shape of the seawall for efficient reduction of overtopping along with the reduction of impact force experienced by the coastal structure due to the wave loads have been investigated by many-c.f., [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Tsunami-like Flow-Induced Forces on the Landward Structure behind a Vertical Seawall with and without Recurve Using OpenFOAM

Harish

Sriram

Schüttrumpf

et al. 2022

Water

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It is more common to introduce the parapet/recurve/wave return wall over the existing structure, such as a vertical seawall or composite structure, to reduce the overtopping efficiently. The advantage of a recurve wall on top of the sea wall has been studied in the past in regards to wave interaction and overtopping. However, their efficiency in protecting the inland structure during extreme events such as flooding during a tsunami is unexplored. The present study addresses the effect of a vertical seawall with recurve in reducing the dam break surge simulating tsunami-induced forces on an inland structure. The study compares the momentum transferred on the landward structure behind a Vertical seaWall (VW) and a vertical wall with the Large ReCurve on the top (LRC) during overtopped conditions. The outcome from the numerical simulation shows an insignificant contribution due to the LRC in reducing the force on the inland structure compared to the VW, albeit delaying the impact time. However, the LRC performed slightly better in the case of a low-rise wall located near the inland structure than the VW. Furthermore, a low-rise VW increases the force and overturning moment on the inland structure compared to no-wall conditions. Both the LRC and the VW reduced the horizontal force on the structure linearly with the increase in height. An exponential decrease in the overturning moment was observed on the landward structure with the increase in the height of the VW or the LRC. Design equations are proposed for the forces and overturning moment reduction based on the height of the VW or the LRC.

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Section: Introductionmentioning

confidence: 99%

Tsunami-like Flow-Induced Forces on the Landward Structure behind a Vertical Seawall with and without Recurve Using OpenFOAM

Harish

Sriram

Schüttrumpf

et al. 2022

Water

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“…Curved seawalls (Figure 1b): The curved design of these seawalls reduces wave overtopping and redirects wave energy due to waves breaking back in a seaward direction [21]. The curved-face of the structure attenuates wave energy resulting in lower stress magnitudes [22].…”

Section: Introductionmentioning

confidence: 99%

Concrete Seawalls: Load Considerations, Ecological Performance, Durability, and Recent Innovations

Hosseinzadeh¹,

Ghiasian²,

Andiroglu³

et al. 2021

Preprint

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Increasing frequency of extreme weather events, driven by climate change, has resulted in an increasing demand for coastal structures to protect and stabilize shorelines. Concrete seawalls are a common category of coastal protection structures, designed with the primary objectives of absorbing wave action, preventing coastline erosion, and alleviating flooding. Much research has been carried out on improving the seawall performance. This work is a review of the current state-of-the-art in concrete seawalls focusing on design aspects including wave loading and innovative seawall designs, ecological considerations, and durability aspects. Wave loads on seawalls have received significant attention; however, their quantification remains a challenging task especially for novel designs. Drawing inspiration from natural shorelines, modification of surface complexity at a multitude of scales can improve the otherwise poor ecological performance of seawalls. The corrosion of the steel is a major durability concern, and the use of non-corrosive reinforcement can increase seawall durability towards corrosion. Examples of innovative seawall designs and systems which have the capability to outperform conventional seawalls are discussed. Advances in structural design, ecological engineering, and infrastructure materials science will drive the development of multi-functional seawalls which are sustainable, durable, and resilient.

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“…Seawalls are widespread in the north of Europe along the Dutch, Danish and German coasts, including also Great Britain. An extensive review of curved seawall shapes can be found in Anand et al (2010).…”

Section: Introduction and State Of The Artmentioning

confidence: 99%

Wave Loading for Recurved Parapet Walls in Non-Breaking Wave Conditions: Analysis of the Induced Impulsive Forces

Castellino¹,

Lara²,

Romano³

et al. 2018

Int. Conf. Coastal. Eng.

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This paper describes 2-D numerical simulations aiming to reproduce the pressure impulse named confined-crest impact (Castellino et al., 2018), which occurs when a recurved parapet wall and non-breaking wave conditions are interacting. The simulations are carried out by using the IH2VOF and IHFOAM, the latter developed as OpenFOAM additional library. The results show a large increase of the pressures and forces value when the recurved part of the vertical parapet results completely occluded by the non-breaking wave crest. A sensitivity analysis has been carried out to study the influence of the geometrical parameters (radius r and opening angle a). It has been found a low variability with respect to the radius increase (from 1.0 m to 2.0 m) and a higher influence related to the opening angle variation. Finally, the non-dimensional force component has been represented as a function of the hydraulic and geometrical parameters by means of the dimensionless product (l/h)*s. These parameters represent the overhang extension seaward of the parapet, the water depth and the wave steepness with reference to deep-water conditions.

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Dynamic pressures on curved front seawall models under random waves

Cited by 6 publications

References 1 publication

Tsunami-like Flow-Induced Forces on the Landward Structure behind a Vertical Seawall with and without Recurve Using OpenFOAM

Tsunami-like Flow-Induced Forces on the Landward Structure behind a Vertical Seawall with and without Recurve Using OpenFOAM

Concrete Seawalls: Load Considerations, Ecological Performance, Durability, and Recent Innovations

Wave Loading for Recurved Parapet Walls in Non-Breaking Wave Conditions: Analysis of the Induced Impulsive Forces

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