考虑极端天气时港珠澳大桥人工岛设计波浪要素——II.设计波要素校核方法

近年来珠江口海域航道治理、桥梁工程、港口建设等大型水上工程建设项目越来越多，水工建筑物安全的重要性和对台风浪灾害破坏的敏感性是大型工程重点关注的要素之一，采用台风浪数学模型分析计算极端天气条件对港珠澳大桥岛桥结合部人工岛设计波浪要素的影响。分析统计1949—2014年影响广东省沿海地区的登陆台风资料，采用随机模型分析珠江口地区300年一遇的台风气压降和登陆最大风速参数；建立珠江口水域的台风浪数学模型；选取不利台风登陆路径，采用300年一遇台风参数组合计算极端天气条件下珠江口内东西人工岛的设计波浪要素，对原设计波要素进行复核。可为其他海洋工程项目设计提供新的思路和研究方法。

Study on the design wave on the artificial island of Hong Kong-Zhuhai-Macao Bridge while considering the extreme weather: II: checking method of design wave elements

Recently,there are more and more large-scale water engineering construction projects in the Pearl River Estuary,such as waterway regulation,bridge engineering and port construction. The importance of safety of hydraulic structures and sensitivity to typhoon wave damage are one of the key factors of large-scale projects. In this paper,the influence of extreme weather conditions on the design wave parameters of artificial island at the junction of Hong Kong-Zhuhai-Macao Bridge is analyzed and calculated by using typhoon wave numerical model. Firstly,the landing typhoon data affecting the coastal areas of Guangdong Province from 1949 to 2014 are analyzed,and the parameters of typhoon pressure drop and maximum landing wind speed 300-year event in Pearl River Estuary are analyzed by stochastic model. Then,the numerical model of typhoon wave in Pearl River Estuary waters is established. Finally,the unfavorable landing typhoon track is selected,and the wave parameters of east and west artificial islands in the Pearl River Estuary under extreme weather conditions are calculated by using the combination of typhoon parameters 300-year event,and the original design wave elements are reviewed. It can provide new ideas and research methods for the design of other ocean engineering projects.