Core Viewpoint - The construction of major infrastructure projects in the Guangdong-Hong Kong-Macao Greater Bay Area is significantly enhancing connectivity, but these projects face challenges related to typhoon resistance and stability under extreme weather conditions [1][2]. Group 1: Infrastructure Projects - The Huangmaohai Cross-Sea Channel, which began construction in June 2020 and is set to open in December 2024, spans approximately 31 kilometers, with a 14-kilometer sea crossing [2][4]. - The Shenzhen-Zhongshan Link, which includes the world's largest span offshore steel box girder suspension bridge, is noted for its complex construction challenges due to frequent typhoons in the region [4][5]. - The Lion Rock Channel is another significant project, featuring the world's first double-deck suspension bridge exceeding 2000 meters in span [5][6]. Group 2: Engineering Innovations - Engineers are employing advanced technologies to enhance the wind resistance of these bridges, including the development of a new combination dynamic structure for the Shenzhen-Zhongshan Link that improves its critical wind speed to 88 m/s, allowing it to withstand a typhoon of level 17 [5][6]. - The Huangmaohai Cross-Sea Channel has implemented wind tunnel tests to optimize its design, achieving performance that exceeds international comfort standards for wind-induced vibrations [4][5]. - The projects involve collaboration with multiple prestigious universities to conduct extensive wind tunnel experiments, leading to the selection of optimal cable and beam designs that enhance stability against wind-induced vibrations [6][7]. Group 3: Typhoon Preparedness - The approach to typhoon preparedness includes deploying thousands of personnel for inspections and safety checks across various construction sites, with significant resources allocated for emergency response [7][8]. - During the impact of Typhoon "Hagupit," the Hong Kong-Zhuhai-Macao Bridge was temporarily closed, and extensive monitoring was conducted to ensure safety [7][8]. - The monitoring systems for bridges like the Humen Bridge have been intensified to ensure rapid response to any sudden changes in conditions [9].