Coastal Defence Structures in Nsw, Australia

摘要

100 Years of Experience In a High Energy Wave Climate This paper uses the examples of Coffs Harbour breakwaters and the training wall head on the Richmond River at Ballina to outline some of the developments in coastal engineering design and construction over the last century. Most of the 63 major structures along the New South Wales (NSW) coastline are similar. Recent developments in data collection and analysis as well as the evolution of physical modelling techniques used for coastal structure design at the NSW Department of Public Works and Services' Manly Hydraulis Laboratory (MHL) are discussed using these two projects. The use of computational models in conjunction with physical models and the introduction of new variables such as wave obliquity and groupiness into breakwater design are discussed. The need to evalaute the performance of artificial units suhc as Accropodes, concrete cubes and Hanbars for primary armour at breakwate heads due to restructions on the availability of quarry armour and availablr construction techniques is briefly addressed.