| Autor: |
Knight, Sam, Hegarty, Rohan, Strewart, Jared, Leaman, Chris, Thiebaut, Severin, Atkinson, Alex, Folan, Anthony |
| Předmět: |
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| Zdroj: |
EA National Conference Publications; 2023, p388-395, 8p |
| Abstrakt: |
Moreton Bay Regional Council (MBRC) is planning significant coastal protection renewal and upgrade works along approximately 450 metres of the highly valued Woody Point foreshore, located on the Redcliffe Peninsular, Queensland. The project is situated adjacent the Moreton Bay Marine Park and the proposed works comprise the renewal and upgrade of approximately 340 metres of existing vertical seawall, upgrades to existing stormwater outfalls, plus the creation of a new and enhanced foreshore beach space. The detailed design phase of the project is due to be completed in 2023 and construction works are currently planned for 2025. A key design challenge was minimising seawall crest levels, to protect the existing high-value coastal views and amenity, whilst also ensuring pedestrian safety and protection from the effects of wave overtopping. Delivery of a thorough and well-considered design methodology enabled the project team to overcome this key design challenge, realising considerable reductions in the estimated capital costs for the seawall plus providing increased confidence in the design performance over the specified 100-year design life. This paper presents the design approach and outcomes of key project studies and investigations including discussion of: • development of key performance measures for the seawall structure (Basis of Design), • site specific investigations including a hydrographic survey and geotechnical investigations, and • project specific studies including MetOcean modelling and physical model testing. These investigations and studies supported the development of an adaptation strategy involving the adoption of a lower seawall crest level for the initial construction and the addition of a step to the seawall crest during the design life to maintain acceptable wave overtopping discharges considering projected Sea Level Rise (SLR). The adopted strategy resulted in a significant reduction in the estimated capital cost for the works and confirmed the value that such investigations can provide. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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