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INNOVATIVE COASTAL CLIFF STABILISATION - THE SCARBOROUGH CLIFFS STABILISATION PROJECT 创新海岸悬崖稳定-斯卡伯勒悬崖稳定项目
Pub Date : 2023-10-02 DOI: 10.9753/icce.v37.management.64
Sam King, Martin Mulcahy, Bobbie Corbett, L. Angus Jackson, Jared Stewart, Loughlin Smith
Coastal cliff erosion and retreat is a common problem worldwide. Long-term erosion due to natural coastal processes have caused the iconic vibrant red cliffs of the Redcliffe peninsular (Scarborough, Queensland, Australia), to retreat landwards, which posed a potential risk to public safety and infrastructure. Investigations into coastal processes and geotechnical conditions at the site found that the retreat of the 320m long section of cliffs was largely driven by the slow notch erosion of the cliff base resulting in translational block failure of the overlying laterized cliff face and rotational collapse of the weaker cliff crest soils. To prevent continued notch erosion of the cliff base and subsequently improve the overall stability of the cliffs, a ‘lower cliff hardening’ solution was developed. This solution comprised of a coloured and textured, soilnailed, glass-fibre reinforced polymer reinforced shotcrete wall, which aimed to replicate the natural form and aesthetic of the existing lower cliff.
海岸悬崖侵蚀退缩是世界范围内普遍存在的问题。由于自然海岸过程的长期侵蚀,导致雷德克里夫半岛(澳大利亚昆士兰州斯卡伯勒)标志性的充满活力的红色悬崖向陆地退缩,这对公共安全和基础设施构成了潜在的风险。对现场海岸过程和岩土条件的调查发现,320米长的悬崖退缩主要是由悬崖底部的缓慢切口侵蚀驱动的,导致上覆的偏侧悬崖面平移块体破坏和较弱的悬崖顶部土壤旋转崩塌。为了防止悬崖底部持续的缺口侵蚀,并随后提高悬崖的整体稳定性,开发了一种“较低的悬崖硬化”解决方案。该方案由彩色和纹理、土钉、玻璃纤维增强聚合物增强喷射混凝土墙组成,旨在复制现有较低悬崖的自然形式和美学。
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引用次数: 0
UNDERSTANDING THE COASTAL RROCESSES WITHIN GUICHEN BAY AND CAPE DOMBEY THROUGH AIRBORNE LIDAR BATHYMETRY 利用机载激光雷达测深技术了解桂辰湾和董贝角的海岸过程
Pub Date : 2023-10-02 DOI: 10.9753/icce.v37.management.162
Mick Hawkins, Paul Seaton, Patrick Hesp, Graziela Miot da Silva
The South East Coastline of South Australia is a dynamic environment, with numerous beaches, shallow reef areas and exposed limestone cliffs. As such, it is a highly susceptible area to the impacts of climate change and coastal erosion. The Robe Council and Flinders University are conducting research on the seabed surrounding Cape Dombey and Guichen Bay to better understand and ultimately determine appropriate coastal management plans for the area. Bathymetry within the region is out of date and unreliable for accurate modelling for their research and Fugro will work with both parties to deliver high resolution topographic and bathymetric data over the town, coastline and the associated waters.
南澳大利亚的东南海岸线是一个充满活力的环境,拥有众多的海滩,浅礁区和裸露的石灰岩悬崖。因此,它是一个极易受到气候变化和海岸侵蚀影响的地区。罗布委员会和弗林德斯大学正在对董贝角和桂臣湾周围的海床进行研究,以更好地了解并最终确定该地区适当的海岸管理计划。该地区的水深测量已经过时,无法为他们的研究提供准确的建模,辉固将与双方合作,提供城镇、海岸线和相关水域的高分辨率地形和水深测量数据。
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引用次数: 0
DEVELOPING DIGITAL TOOLS FOR PLANNING, COORDINATION AND VISUALISATION OF DATA AND DESIGNS FOR DARWIN MIDDLE ARM 开发用于规划、协调和可视化达尔文中臂数据和设计的数字工具
Pub Date : 2023-10-02 DOI: 10.9753/icce.v37.structures.29
Beau Mackenzie, Joshua Parkinson
The Darwin Middle Arm Sustainable Development Precinct (MASDP) is a Whole of Government Project led by the Northern Territory (NT) Department of Infrastructure, Planning and Logistics (DIPL). Royal HaskoningDHV (RHDHV) has been working with DIPL on the maritime infrastructure design elements of the Precinct and has also been assisting with environmental planning and approvals. The communication of complex planning, design, environmental and commercial factors to various nontechnical stakeholders is a significant challenge for major infrastructure projects like MASDP. Digital tools, including online Geospatial Information Systems (GIS) and 3D Visualisation/Building Information Modelling (BIM) modelling software, have been utilised for effective management and communication of planning and design information.
达尔文中臂可持续发展区(MASDP)是由北领地(NT)基础设施、规划和物流部(DIPL)领导的一个整体政府项目。皇家HaskoningDHV (RHDHV)一直在与DIPL合作,设计该区域的海事基础设施元素,并协助进行环境规划和审批。对于像MASDP这样的大型基础设施项目来说,将复杂的规划、设计、环境和商业因素与各种非技术利益相关者进行沟通是一个重大挑战。数码工具,包括在线地理空间信息系统(GIS)和三维可视化/建筑信息模型(BIM)模型软件,已被用来有效地管理和沟通规划和设计信息。
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引用次数: 0
SEISMIC AND TSUNAMI HAZARD ASSESSMENT OF COASTAL BUILDINGS IN WEST COAST OF JAPAN 日本西海岸沿海建筑地震海啸危险性评估
Pub Date : 2023-10-02 DOI: 10.9753/icce.v37.management.136
Takuya Miyashita, Ryosuke Suganuma, Nobuhito Mori, Tomoya Shimura
Coastal cities are exposed to various types of disaster risks, such as tsunamis and storm surges. In particular, a megathrust earthquake has a potential to cause severe damage to cities almost simultaneously in terms of both seismic ground shaking and tsunami damage. However, in the countermeasures against future disasters, seismic and tsunami damage are generally assessed separately, and different source models are assumed for different types of disasters. This study aims to calculate damage probabilities of ground motion and tsunami for buildings in a coastal city under the same earthquake scenarios and to make an intercomparison between these two kinds of hazards.
沿海城市面临各种灾害风险,如海啸和风暴潮。特别是,大型逆冲地震有可能几乎同时对城市造成地面震动和海啸破坏。然而,在应对未来灾害的对策中,一般将地震和海啸的损失分别评估,并针对不同类型的灾害假设不同的震源模型。本研究旨在计算相同地震情景下地震动和海啸对沿海城市建筑物的破坏概率,并对这两种灾害进行相互比较。
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引用次数: 0
ANALYSIS OF TOPOGRAPHIC AND CURRENT INFORMATION BY ADCP AND WATERCRAFT 利用adcp和船只分析地形和水流信息
Pub Date : 2023-10-02 DOI: 10.9753/icce.v37.management.166
Naoyuki Inukai, Mitsuru Minamihara
In August 2017, when some high school students swam at Zenibako beach in Hokkaido, three students carried away and drowned. The several other accidents occurred at this beach in recently years. Firstly, we check the weather condition and the wave condition. Secondary, we conducted the field survey in August 2018. In the field survey, we used ADCP, and we got the water depth information and the current information. When we used the ADCP, this device and GPS device attached to a watercraft. During conducting the field survey, we got the aerial photographs by the UAV. The photographs were used to make a grid topographic data. Thirdly, we simulated the wind driven current in Ishikari Bay, and the wave current around Zenibako Beach. Finally, we considered the reason why the accident occurred. Our final purpose of this research is to obtain the knowledge for preventing the occurrence of water accidents. To obtain the knowledge, we grasped the mechanism of drowning by grasping the topography of the field and dynamics of the seawater when the water accident occurred.
2017年8月,一些高中生在北海道Zenibako海滩游泳时,三名学生被冲走淹死。近年来,这个海滩还发生了其他几起事故。首先,我们检查了天气情况和海浪情况。其次,我们在2018年8月进行了实地调查。在野外调查中,我们使用ADCP,得到了水深信息和水流信息。当我们使用ADCP时,这个装置和GPS装置连接在一艘船上。在实地调查中,我们通过无人机获得了航拍照片。这些照片被用来制作网格地形数据。第三,我们模拟了石卡里湾的风驱动流和真尼巴科海滩周围的海浪流。最后,我们考虑了事故发生的原因。我们研究的最终目的是获得预防水上事故发生的知识。为了获得知识,我们通过掌握水事故发生时的场地形和海水动力学来掌握溺水的机理。
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引用次数: 0
WIND AND WAVE TRAINED ARTIFICIAL NEURAL NETWORKS FOR THE FORECASTING OF WAVE CLIMATE IN HARBOUR AREA 采用风浪训练人工神经网络对港区波浪气候进行预报
Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.papers.58
Luca Cavallaro, Claudio Iuppa, Elisa Castro, Carla Faraci, Rosaria Ester Musumeci, Enrico Foti
Nowadays, maritime transportation has expanded rapidly, involving the need to enhance several navigation-related issues, particularly concerning the safety of navigation, which is significantly impacted by weather conditions. In this regard, creating a wave forecasting system could facilitate vessel movement at the harbour entrance or inside the sheltered area. Wave characteristics are usually estimated using numerical models, which generally require high computational costs, making them inadequate for nowcasting and forecasting wave climate. The current study describes the implementation of a forecasting methodology for the port area of Augusta (Sicily) based on an Artificial Neural Network (ANN) that attempts to deliver a trustworthy response and the numerical model but with a significant reduction in the computational time.
如今,海上运输迅速发展,涉及到需要加强几个与航行有关的问题,特别是与航行安全有关的问题,这受到天气条件的显著影响。在这方面,建立海浪预报系统可方便船只在海港入口或避风区内移动。波浪特征通常使用数值模式估计,这通常需要较高的计算成本,使其不适合临近预报和预测波浪气候。目前的研究描述了基于人工神经网络(ANN)的奥古斯塔(西西里岛)港区预测方法的实施,该方法试图提供可靠的响应和数值模型,但大大减少了计算时间。
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引用次数: 0
YEPPOON SURF POOL: FULL-SCALE VALIDATION OF A CFD MODEL Yeppoon冲浪池:CFD模型的全尺寸验证
Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.papers.39
Alireza Valizadeh, Simon Brandi Mortensen, Jason Antenucci, Aaron Trevis
DHI has been supporting Surf Lakes in the design and optimization of their inland surf pool since 2017. This support has been primarily through providing CFD simulations of various aspects of the design. Whilst the CFD model was verified against basic functionality tests and qualitatively compared to the field data, no quantitative comparisons were available until February 2022, where our high-quality numerical model was compared with the field measurements. The results of that comparison and some details and challenges of the numerical model are addressed in this paper. The agreement between measured data and CFD results is excellent, demonstrating the ability to provide effective design support despite a range of numerical challenges.
自2017年以来,DHI一直支持Surf Lakes的内陆冲浪池的设计和优化。这种支持主要是通过提供设计各个方面的CFD模拟。虽然CFD模型通过基本功能测试进行了验证,并与现场数据进行了定性比较,但直到2022年2月,我们的高质量数值模型才与现场测量结果进行了比较。本文讨论了这一比较的结果以及数值模型的一些细节和挑战。测量数据和CFD结果之间的一致性非常好,表明尽管存在一系列数值挑战,但仍有能力提供有效的设计支持。
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引用次数: 0
ORBITAL VELOCITIES DUE TO BICHROMATIC-BIDIRECTIONAL WAVES 双色双向波引起的轨道速度
Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.papers.59
Mario G. Souza e Silva, Ricardo Guimarães, Nils Kerpen, Paulo Cesar Rosman, Claudio F. Neves, Torsten Schlurmann
The paper describes the orbital velocity pattern generated by Bichromatic-Bidirectional waves (Bi-Bi waves), and investigate how the forced (long period) wave decays along the depth. Experiments conducted at a wave basin proved that the use of ADVs provided much better results than free surface elevations, due to the higher sensitivity of the instrument, as compared of the free surface measurements.
本文描述了双色-双向波(Bi-Bi波)产生的轨道速度分布,并研究了强迫(长周期)波沿深度衰减的情况。在波盆进行的实验证明,由于ADVs仪器的灵敏度更高,与自由表面测量相比,使用ADVs提供了比自由表面测量更好的结果。
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引用次数: 0
SIGNIFICANT WAVE HEIGHT PREDICTION USING TRANSFER LEARNING 使用迁移学习预测显著波高
Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.waves.12
Yuki Obara, Ryota Nakamura
Wave prediction needed for maritime construction is generally performed by numerical models. This method, however, requires a high-performance computer and a large cost of computational resources. With the development of neural networks, which can compute at a low cost, the use of neural networks in wave prediction has recently been studied. However, because a large amount of training data is required for neural network tasks using scarce datasets, it is difficult to predict wave conditions accurately. Fan et al. (2020) reported that using LSTM model for prediction of significant wave height (Hs) was higher accuracy than conventional neural network model. Additionally, they recommended using at least 2 years of training data for 6h predictions, that is, an excessively small amount of data is not presumed to predict sufficiently Hs. Therefore, we propose a wave prediction method using transition learning. Transfer Learning is the method of transferring trained knowledge from one model to another. In this study, we investigate whether transfer learning can be used to improve the performance of Hs prediction by transferring the knowledge learned at Sakata port, which has a large amount of training data, to the coast of Yamagata, which has a scarce one.
海上工程所需的波浪预报一般采用数值模型进行。然而,这种方法需要高性能的计算机和大量的计算资源。随着神经网络计算成本低的发展,神经网络在波浪预测中的应用已成为研究热点。然而,由于使用稀缺数据集的神经网络任务需要大量的训练数据,因此难以准确预测波浪状况。Fan et al.(2020)报道使用LSTM模型预测有效波高(Hs)比传统神经网络模型具有更高的精度。此外,他们建议使用至少2年的训练数据进行6h的预测,也就是说,不能认为数据量过小就能充分预测h。因此,我们提出了一种基于过渡学习的波浪预测方法。迁移学习是将训练过的知识从一个模型转移到另一个模型的方法。在本研究中,我们研究了迁移学习是否可以通过将在Sakata港口学习到的知识转移到山形海岸来提高Hs预测的性能,Sakata港口拥有大量的训练数据,山形海岸拥有稀缺的训练数据。
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引用次数: 0
EXPERIMENTAL INVESTIGATIONS INTO THE EFFECT OF STRONG WINDS ON WAVE OVERTOPPING AT A VERTICAL SEAWALL 大风对垂直海堤波浪过顶影响的实验研究
Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.structures.26
Naoto Inagaki, Tomoya Shibayama, Kunihiko Ishibashi, Ryota Nakamura, Miguel Esteban
Given the possible future intensification of tropical cyclones as a consequence of ongoing global warming, it is becoming increasingly important to consider the effect that stronger winds will have on nearshore wave dynamics. Despite the possible influence of wind on the characteristics of wave overtopping having been suggested decades ago (e.g. Iwagaki et al., 1966), to the authors’ knowledge, not so many studies on wave dynamics have discussed this effect (e.g. Ward, 1998). Hence, the present study quantitatively analyses the overtopping of coastal structures under various types of waves and wind speeds, and will discuss the wind effects on elementary hydrodynamic processes such as wave breaking.
由于持续的全球变暖,未来热带气旋可能会加剧,因此考虑强风对近岸波浪动力学的影响变得越来越重要。尽管几十年前就提出了风对波浪过顶特性的可能影响(如Iwagaki等人,1966),但据作者所知,并没有那么多关于波浪动力学的研究讨论过这种影响(如Ward, 1998)。因此,本研究定量分析了不同类型波浪和风速下海岸结构的过顶,并将讨论风对波浪破碎等基本水动力过程的影响。
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引用次数: 0
期刊
Proceedings of ... Conference on Coastal Engineering
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