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“桦加沙”过境珠江,能扛17级台风的超级工程怎样了
21世纪经济报道· 2025-09-24 13:49
记者丨 伍素文 实习生钟宸 编辑丨蒋韵 深中通道、黄茅海跨海通道、港珠澳大桥、南沙大桥、虎门大桥……曾经被伶仃洋隔断的珠江 口两岸城市群,正被一道道卧波长虹串联成网,构成粤港澳大湾区跨海跨江通道群,见证着粤 港澳大湾区的加速融合。 随着一个个超级工程横空出世,"大桥经济"应势而起。不过,这些工程项目位处珠江口台风多 发海域, 如何解决强台风下桥梁颤振稳定性问题是桥梁建设面临的一大难题,也是个世界性 难题。 据"@广东天气"消息,9月24日13时,"桦加沙"(超强台风级)的中心位在广东省阳江市东偏 南方向约95公里的广东省近海海面上,中心附近最大风力16级,达到52米每秒的风速,中心最 低气压935百帕,八级大风范围半径约330公里,十级大风范围半径约150公里。截至24日下午 15:50,广东省共发布104个台风预警信号,分别是28红、19橙、18黄、39蓝。 面对极端天气与复杂环境,这些超级工程如何迎击超级风王? 超级工程"科技密码"显神通 珠江口是超强台风多发区,因此该区域的桥梁设计一直将抗风能力作为核心考量。工程师们综 合运用多种先进技术和方案,确保工程项目在极端风况下的稳定性与安全性。 超级工程的背 ...
风王“桦加沙”过境珠江,能扛17级台风的超级工程怎样了?
Core Viewpoint - The construction of major infrastructure projects in the Guangdong-Hong Kong-Macao Greater Bay Area is accelerating regional integration, but these projects face significant challenges due to extreme weather conditions, particularly typhoons [1][2]. Group 1: Infrastructure Projects - The Huangmaohai Cross-Sea Passage, which began construction in June 2020 and is set to open in December 2024, is a key project connecting Zhuhai and Jiangmen, with a total length of approximately 31 kilometers and a sea-crossing section of about 14 kilometers [2][4]. - The Shenzhong Passage, which includes the Shenzhong Bridge, is recognized as the world's most complex cross-sea cluster engineering project, featuring a total length of 2826 meters and a main span of 1666 meters, making it the largest span offshore steel box girder suspension bridge globally [5][6]. Group 2: Engineering Challenges - The design of bridges in the Pearl River Estuary prioritizes wind resistance due to the region's susceptibility to super typhoons, with engineers employing advanced technologies to ensure stability and safety under extreme wind conditions [2][4]. - The Huangmaohai Cross-Sea Passage has implemented innovative aerodynamic control technologies to manage bridge vibration and wind resistance, achieving performance that exceeds international comfort standards [5][6]. Group 3: Typhoon Impact and Response - Typhoon "Hagupit," classified as a super typhoon, impacted Guangdong, prompting the temporary closure of the Hong Kong-Zhuhai-Macao Bridge and extensive safety checks by the Guangdong Transportation Group, which deployed 9396 personnel for pre-typhoon inspections [8][9]. - The Guangdong Transportation Group has activated emergency response measures across 52 highway sections, with various levels of wind emergency responses initiated to ensure safety during the typhoon [10][11].