Title Wave Attenuation Experiment of Hualien Port (1/3) - Experiment Planning and Implementation
Dept Transportation Technology Research Center
Year 2024
Month 3
Price 200
Summary Since the construction of its own harbor, Hualien Port has consistently played a crucial role in connecting transportation and economic development in the eastern region. However, its unique harbor type makes it difficult to dissipate the surges generated by typhoons in the Pacific Ocean, leading to frequent instability in the harbor basin and adversely affecting the stability of vessels and the safety of personnel. In recent years, Hualien Port has faced international shipping trends and competition, necessitating concurrent development in transportation and tourism. Therefore, addressing the challenges of climate change and transition while reducing the impact of surges on the existing harbor type to enhance basin stability and maintain port safety becomes a top priority. This project consolidates past achievements and 2023 on-site wave observation data, revealing that the indicative wave height at Station 25 in the harbor exceeded 1 meter on nine occasions, with seven instances directly or indirectly influenced by typhoons. The study also plans hydraulic model experiments using long-term wave observation data and a bathymetric map of Hualien Port from 111 years. The experiment is expected to employ a 1/100 scale model with a depth of 40 cm, simulating wave conditions from four typhoons: Megi, Haitang, Mangkhut, and Danas. Additionally, five sets of regular wave test conditions will be designed based on the DAVIS wave-making system curve, and Hualien Port's annual waves will be simulated using JONSWAP irregular waves with ESE, SE, SSE, and S as the main wave directions.For improvement solutions, four proposals are developed: (1) installing energy dissipation facilities with block stones and wave absorbers near breakwaters, referencing Tomakomai Port in Japan; (2) placing seabed energy dissipation structures at the harbor exit; (3) converting sections of #7 and #12 piers into energy dissipationtype piers; and (4) implementing numerical improvement measures proposed by the institute in 2009. The effectiveness of these solutions will be assessed in subsequent experiments. During the planning of the experiment conditions, the institute has completed a comprehensive renovation of the second experimental shed, contributing to the safety and efficiency of future experiments. This project, through the integration of relevant studies on Hualien Port, the application of long-term wave statistics, the planning of hydraulic model experiments, and the development of energy dissipation solutions, aims to provide valuable references for Hualien Port Authority and related entities in future construction and development.
Post date 2024/03/28
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