Numerical Models in Coastal Hazards and Coastal Environment

Lee, Han Soo; Choi, Youngjin; Woo, Seung‐Buhm

doi:10.3390/jmse9050494

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…As a transitional zone between the continental interiors and the open ocean, coastal regions represent the most economically dynamic and project-intensive areas in China [1]. Due to the complex hydrogeological conditions in coastal regions, the use of internal bracing systems for supporting coastal foundation pits is essential [2][3][4]. Taking the example of metro construction in the coastal city of Qingdao in northern China, a large number of coastal metro foundation pits, as shown in Figure 1, have been formed in urban development in recent years to meet the requirements of economic development and transportation [5].…”

Section: Introductionmentioning

confidence: 99%

Performance of Prefabricated Hollow Concrete-Filled Steel Tube Bracings on Transverse Bending: Experimental and Numerical Analyses

Dong,

Peng,

Wang

et al. 2023

JMSE

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Due to the complex hydrogeological conditions in coastal regions, the use of internal bracing systems is necessary for supporting coastal foundation pits. This paper introduces a novel prefabricated foundation pit bracing system based on Hollow Concrete-Filled Steel Tube (H-CFST) structures that can be reused, offering significant economic and societal benefits. However, there is a severe lack of research on the application of H-CFST bracing systems. Through model tests and finite element simulations, the load-displacement characteristics and failure modes of prefabricated H-CFST bracing under transverse bending were investigated. The study revealed that when a wall thickness of 1.5 d was chosen, the self-designed hoop effectively mitigated strength and stiffness reduction at the bracing connection point. When the load reached 150 kN, the outer steel tube of the H-CFST components experienced localized yielding, and when the load was increased to 300 kN, the end supports exhibited cracking. Finite element analysis provided a more accurate prediction of bracing failure at 147.18 kN, and it offered valuable insights for optimizing the bracing design. Based on the above research, theoretical methods for calculating the bearing capacity of each bracing component under transverse bending conditions have been proposed and validated against experimental results.

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Section: Introductionmentioning

confidence: 99%

Performance of Prefabricated Hollow Concrete-Filled Steel Tube Bracings on Transverse Bending: Experimental and Numerical Analyses

Dong,

Peng,

Wang

et al. 2023

JMSE

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“…The impacts of climate change in coastal areas concern a significant part of society given that a large fraction of the global population (41%) and world's megacities (60%) are located in the coastal zone (Martínez et al, 2007). Coastal areas combine high population density, concentration of economic activities (Creel 2003), and high exposure to the impacts of waves, extreme sea levels, runoff, land subsidence and other hazards (Lee et al, 2021). Sea Level Rise (SLR) and impacts from extreme weather events will be most felt in most coastal areas in the next decades (Oppenheimer et al, 2019) where 190-630 million people are predicted to be inundated by 2,100 (Kulp and Strauss 2019).…”

Section: Introductionmentioning

confidence: 99%

Nature-Based Solutions in Coastal and Estuarine Areas of Europe

Moraes

Reguero

Mazarrasa

et al. 2022

Front. Environ. Sci.

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Momentum for sustainable and climate resilience solutions for coastal protection are growing globally given the pressing need to prevent further loss of biodiversity and ecosystems while meeting the climate change adaptation and mitigation goals. Nature-Based Solutions (NbS) represent an opportunity to align environmental and resilience goals, at a time of strained budgets in a global context and when short-term needs may run counter to long-term goals. In Europe, NbS fit the mandates of major EU environmental and climate change policies by restoring biodiversity and enhancing climate-resilience and carbon sequestration. Previous studies have compiled scientific evidence about hydro-meteorological hazards for the use of NbS. However, their implementation at scale is still lacking. As the knowledge and experience with NbS for adaptation to natural hazards and climate change increases, it becomes more important to draw lessons learned and insights for replicating and scaling up NbS, especially in coastal areas where their implementation is still limited compared to other environments. This study analyzed NbS case studies across European coastal and estuarine areas to draw key lessons, understand better the current status of implementation, and identify key challenges and gaps. From a total of 59 NbS case studies associated with flooding, erosion and biodiversity loss, results show an increase in NbS implementation since 1990s, but most rapidly between 2005 and 2015. Most of the case studies are hybrid solutions employing wetlands, predominantly located in the United Kingdom (UK) and the Netherlands. Funding of NbS is largely from public sources, and rarely come from a single or a private source. Three-quarters of the case studies reported monitoring activities, but more than half did not disclose quantitative results related to effectiveness against flooding and/or erosion. The need to improve coastal defenses was indicated as the main motivation for NbS implementation over traditional structures, while sustainability was the most mentioned additional reason. Although a variety of co-benefits and lessons learned was identified, clearer descriptions and enhanced details of such information are required. There is a need for tools and strategies to expand knowledge sharing of lessons learned to enable further replication of successful cases in other areas.

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A modeling application of integrated nature based solutions (NBS) for coastal erosion and flooding mitigation in the Emilia-Romagna coastline (Northeast Italy)

Unguendoli

Biolchi

Aguzzi

et al. 2023

Science of The Total Environment

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Numerical Models in Coastal Hazards and Coastal Environment

Abstract: According to the United Nations (UN) Atlas of the Oceans, about 44% of the world’s population lives in coastal areas within 150 km of the sea [...]

Cited by 3 publications

References 14 publications

Performance of Prefabricated Hollow Concrete-Filled Steel Tube Bracings on Transverse Bending: Experimental and Numerical Analyses

Performance of Prefabricated Hollow Concrete-Filled Steel Tube Bracings on Transverse Bending: Experimental and Numerical Analyses

Nature-Based Solutions in Coastal and Estuarine Areas of Europe

A modeling application of integrated nature based solutions (NBS) for coastal erosion and flooding mitigation in the Emilia-Romagna coastline (Northeast Italy)

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