Numerical Investigation of Countermeasure Effects on Overland Flow Hydrodynamic and Force Mitigation in Coastal Communities
0
조회
0
다운로드
4
인용
0
참고문헌
키워드
초록
Coastal communities have been vulnerable to extreme coastal flooding induced by hurricanes and tsunamis. Many studies solely focused on the overland flow hydrodynamic and loading mechanisms on individual inland structures or buildings. Only a few studies have investigated the effects of flooding mitigation measures to protect the coastal communities represented through a complex series of building arrays. This study numerically examined the performance of flood-mitigation measures from tsunami-like wave-induced overland flows. A computational fluid dynamic model was utilized to investigate the performance of mitigation structures such as submerged breakwaters and seawalls in reducing resultant forces on a series of building arrays. This study considered the effects of incident wave heights and four geometrically structural factors: the freeboard, crest width of submerged breakwaters, and the height and location of seawalls. The results showed that prevention structures reduced inundation flow depths, velocities, and maximum forces in the inland environment. The results also indicated that increasing the seawall height or reducing the freeboard of a submerged breakwater significantly reduces the maximum horizontal forces, especially in the first row of buildings. However, installing a low-lying seawall closer to the building rows amplifies the maximum forces compared to the original seawall at the shoreline.
Abstract
Coastal communities have been vulnerable to extreme coastal flooding induced by hurricanes and tsunamis. Many studies solely focused on the overland flow hydrodynamic and loading mechanisms on individual inland structures or buildings. Only a few studies have investigated the effects of flooding mitigation measures to protect the coastal communities represented through a complex series of building arrays. This study numerically examined the performance of flood-mitigation measures from tsunami-like wave-induced overland flows. A computational fluid dynamic model was utilized to investigate the performance of mitigation structures such as submerged breakwaters and seawalls in reducing resultant forces on a series of building arrays. This study considered the effects of incident wave heights and four geometrically structural factors: the freeboard, crest width of submerged breakwaters, and the height and location of seawalls. The results showed that prevention structures reduced inundation flow depths, velocities, and maximum forces in the inland environment. The results also indicated that increasing the seawall height or reducing the freeboard of a submerged breakwater significantly reduces the maximum horizontal forces, especially in the first row of buildings. However, installing a low-lying seawall closer to the building rows amplifies the maximum forces compared to the original seawall at the shoreline.
참고문헌 (23)
- "Summary Statement from the Japan – UNESCO – UNU Symposium on The Great East Japan Tsunami on 11 March 2011and Tsunami Warning Systems: Policy erspectives 16 – 17 February 2012" (2012)[URL]
- Aghababaei, M, "Performance assessment of building infrastructure impacted by the 2017Hurricane Harvey in the Port Aransas region", Journal of Performance of Constructed Facilities, 32(5), pp.4018069~ (2018)[DOI]
- Dang, H. V, "Numerical investigation of countermeasure effects on tsunami inundation hydrodynamic and force mitigation in the coastal communities", Proceedings of 2022 spring symposium of the Korea Association of Ocean Science and Technology Societies (2022)
- Dang, V. H, "Physical modeling of hard structure effects on tsunami force reduction in urban coastal environment", Ports 2022, pp.417~427 (2022)
- Eamon, C. D, "Observations of structural damage caused by hurricane Katrina on the Mississippi Gulf coast", Journal of Performance of Constructed Facilities, 21(2), pp.117~127 (2007)[DOI]
- Higuera, P, "Three-dimensional numerical wave generation with moving boundaries", Coastal Engineering, 101, pp.35~47 (2015)[DOI]
- Ishii, H, "Experimental and numerical investigation on tsunami run-up flow around coastal buildings", Coastal Engineering Journal, 63(4), pp.485~503 (2021)[DOI]
- Kihara, N, "A physical model of tsunami inundation and wave pressures for an idealized coastal industrial site", Coastal Engineering, 169, pp.103970~ (2021)[DOI]
- 이현진, "잠제의 소파효과에 관한 실험적 연구", 한국해양공학회지, 25(6), pp.29~34 (2011), 한국해양공학회
- Li, X, "3D numerical simulation of wave transmission for low–crested and submerged breakwaters", Coastal Engineering, 152, pp.103517~ (2019)[DOI]
- Lukkunaprasit, P, "Building damage in Thailand in the 2004 Indian Ocean tsunami and clues for tsunami–resistant design", The IES Journal Part A : Civil & Structural Engineering, 1(1), pp.17~30 (2008)[DOI]
- Moris, J. P, "Tsunami wave run-up load reduction inside a building array", Coastal Engineering, 169, pp.103910~ (2021)[DOI]
- Oshnack, M. E, "Effectiveness of small onshore seawall in reducing forcesinduced by Tsunami bore : large scale experimental study", Journal of Disaster Research, 4(6), pp.382~390 (2009)[DOI]
- Park, H, "Tsunami inundation modeling in constructed environments : A physical and numerical comparison of free–surface elevation, velocity, and momentum flux", Coastal Engineering, 79, pp.9~21 (2013)[DOI]
- 박선호, "파라미터 변화에 따른 석션버켓기초에 발생하는 세굴현상에 대한 수치해석 연구", 한국해양공학회지, 31(4), pp.281~287 (2017), 한국해양공학회
- Qin, X, "Three-dimensional modeling of tsunami forces on coastal communities", Coastal Engineering, 140, pp.43~59 (2018)[DOI]
- Raby, A, "Implications of the 2011 Great East Japan Tsunami on sea defence design", International Journal of Disaster Risk Reduction, 14, pp.332~346 (2015)[DOI]
- Rahman, S, "Experimental study on tsunami risk reduction on coastal building fronted by seawall", The Scientific World Journal, 2014, pp.729357~ (2014)[DOI]
- Sogut, D. V, "Interaction of a solitary wave with an array of macro-roughness elements in the presence of steady currents", Coastal Engineering, 164, pp.103829~ (2021)[DOI]
- Sogut, E, "Effects of building arrangement on flow and pressure fields generated by a solitary wave interacting with developed coasts", Advances in Water Resources, 134, pp.103450~ (2019)[DOI]
- Sun, W, "Numerical investigation on performance of submerged porous breakwater to mitigate hydrodynamic loads of coastal bridge deck under solitary wave", Ocean Engineering, 213, pp.107660~ (2020)[DOI]
- "Global and Regional Sea Level Rise Scenarios for the United States (NOAA Technical Report NOS CO-OPS 083)" (2017)[URL]
- Thomas, S, "Influence of finite–length seawalls for tsunami loading on coastal structures", Journal of Waterway, Port, Coastal, and Ocean Engineering, 138(3), pp.203~214 (2012)[DOI]