Experimental investigating on the reflected waves from the caisson-type vertical porous seawalls

Esmaeili, Mehdi; Rahbani, Maryam; Khaniki, Ali Karami

doi:10.1007/s13131-019-1386-6

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…Penelitian Umeda et al, (2013) tentang pengurangan genangan aliran tsunami dan energi tsunami oleh sekat vertikal berpori yang dipasang di atas tembok laut, hasil yang di peroleh yaitu efek pengurangan kedalaman genangan dan limpasan ditentukan oleh kerapatan sekat dan tinggi tsunami relatif terhadap tinggi sekat, sedangkan peredaman gelombang dipengaruhi oleh variasi ketinggian tsunami di depan sekat berpori. Esmaeili et al, (2019) melakukan studi model fisik untuk mengetahui efisiensi hidrodinamika tembok laut berpori vertikal tipe caisson yang digunakan untuk melindungi daerah pesisir dengan membandingkan refleksi gelombang dari tembok laut berpori, semi-pori, dan berpori yang disebabkan oleh gelombang reguler dan acak. hasilnya memperoleh persamaan empirik untuk menghitung koefisien refleksi dari berbagai jenis tembok laut sehingga dapat mengoptimalkan desain tembok laut vertikal dan untuk skema perlindungan pantai.…”

Section: Mitigasi Tsunami Dengan Pendekatan Struktur Buatanunclassified

Perlukah Sistem Mitigasi Hibrid Untuk Bencana Tsunami?: Sebuah Tinjauan Literatur

T Amaliah,

MA Thaha,

R Karamma

et al. 2024

KoNTekS

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Dewasa ini pesisir pantai menjadi wilayah yang berkembang pesat karena potensi keindahan laut dan sarana serta prasarana yang memadai sehingga mendorong pemukiman baru dan pengembangan wisata. Namun, potensi ini akan mengakibatkan semakin banyak masyarakat dan fasilitas umum yang terancam bencana gelombang tsunami. Untuk mengatasi dampaknya, solusi struktur mitigasi hibrid diterapkan. Langkah-langkah penanggulangan mencakup langkah-langkah struktur buatan untuk mencegah dampak tsunami seperti tembok laut, pemecah gelombang serta langkah-langkah struktur alami dengan penghijauan pantai. Jika upaya-upaya penanggulangan dengan struktur buatan untuk meredam energi dan mengurangi genangan, maka upaya dengan penanggulangan struktur alami untuk menurunkan kerentanan atau mitigasi dampak gelombang secara alamiah. Dalam makalah ini dilakukan tinjauan literatur tentang mitigasi dengan penanggulangan struktur buatan dan mitigasi dengan penanggulangan struktur alamiah (vegetasi pantai) dan tinjauan literatur tentang penggabungan penanggulangan struktur buatan dan struktur alami untuk mereduksi energi gelombang tsunami.

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Section: Mitigasi Tsunami Dengan Pendekatan Struktur Buatanunclassified

Perlukah Sistem Mitigasi Hibrid Untuk Bencana Tsunami?: Sebuah Tinjauan Literatur

T Amaliah,

MA Thaha,

R Karamma

et al. 2024

KoNTekS

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“…More recent studies applied different porosity components to investigate K r under regular waves (Koraim and Rageh [30]) and irregular waves for submerged structures (Young and Testik [31], Koraim et al [32]). Combinations of regular and irregular wave cases were recently applied to investigate the K r properties of partly or fully perforated caisson seawalls by Lee and Shin [33] and Esmaeili et al [34]).…”

Section: Introductionmentioning

confidence: 99%

Reflection Analysis of Impermeable Slopes under Bimodal Sea Conditions

Orimoloye

Karunarathna

Reeve

2020

JMSE

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Understanding of the reflection characteristics of coastal seawalls is crucial for design. Wave reflection can cause difficulties in small vessel manoeuvring at harbour entrances; this can cause damage to the toe of coastal structures by scouring. Previous studies have examined the reflection characteristics of coastal seawalls under random wind-generated waves without considering the effects of wave bimodality created by the presence of swell waves. This present study focuses on the influence of random wave bimodality on the reflective characteristics of coastal seawalls. 823 experimental tests were conducted to examine the reflection performance of impermeable sloping seawalls under bimodal waves. Reflection coefficients were computed from each test. The analysis of the results suggests that both unimodal and bimodal waves give similar reflection characteristics. However, the reflection coefficient in bimodal sea states seems to be more prolonged than in the unimodal sea states. It was found that the reflection coefficients of coastal seawalls are strongly influenced by the seawall slope, the wave steepness, the relative water depth, and the surf similarity parameters. A new empirical reflection equation to describe the influence of wave bimodality on the reflection characteristics of coastal seawalls has been formulated based on this study.

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A Composite Permeable Sloping Seawall for Effective Energy Dissipation: A Quasi-Soft Alternative Solution for Shore Protection

Dabir

Khare

Munireddy

2022

JMSE

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The recent trend in coastal research centers around environmental sustainability, especially in coastal conservation. A seawall typically has three layers, namely core, filter, and hard rubble/concrete armor. In the current study, a two-layered seawall is proposed, comprising a coir geotextile roll from the coastal regions, along with sand encapsulated in a geotextile over an impermeable core. This can be considered as a quasi-soft solution against the traditional, three-layered, hard alternative. The objective of this study is to investigate the combined effect of slope and porosity, of this composite structure, on the wave reflection. The findings show that the composite structure provides less reflection coefficient values compared to traditional rubble mound seawalls. Four orientations and positions of coir rolls with geosynthetic sandbag were tested. The armor layer with coir rolls overlain by geosynthetic sandbags over an impermeable core could be a better alternative, as it increases the hydrodynamic performance by 59% as compared to sandbags, used alone, over an impermeable core on a slope of 1:2.

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Experimental investigating on the reflected waves from the caisson-type vertical porous seawalls

Cited by 3 publications

References 13 publications

Perlukah Sistem Mitigasi Hibrid Untuk Bencana Tsunami?: Sebuah Tinjauan Literatur

Perlukah Sistem Mitigasi Hibrid Untuk Bencana Tsunami?: Sebuah Tinjauan Literatur

Reflection Analysis of Impermeable Slopes under Bimodal Sea Conditions

A Composite Permeable Sloping Seawall for Effective Energy Dissipation: A Quasi-Soft Alternative Solution for Shore Protection

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