摘要
以世界最长的跨海大桥港珠澳大桥主体桥梁工程(分为A、B两段)为研究对象,基于车辆侧滑模型估算晴天和雨天、1~17级风力和多种风向角下不发生侧滑的安全车速阈值,分析安全车速随风向角、风力、晴雨状况的变化趋势。结果表明:最不利于安全行驶的风向角约为75°,港珠澳大桥A段最不利的风向角为120°、150°、300°、330°,B段最不利的风向角为15°、165°、195°、345°。综合分析大桥气象观测代表站的风向、风速资料表明,港珠澳大桥A段行车侧滑高风险季节为夏季,8月为高风险月份;B段高风险季节为夏季,7月为高风险月份,且B段风险大于A段。
Taking the main bridge project of HongKong-Zhuhai-Macao Bridge(HZMB),the longest cross-sea bridge in the world(divided into two sections,A and B),as the research object,based on the vehicle skid model to estimate the safe speed thresholds without side-slip under sunny and rainy days,wind force of 1 to 17,and a variety of wind angles,we have analyzed the trend of the change of the safe speeds with the wind angle,the wind force,and the sunny and rainy conditions.The results show that the most unfavorable wind angle for safe driving is about 75°,and the most unfavorable wind angles for section A of the HZMB are 120°,150°,300°,and 330°,while the most unfavorable wind angles for section B are 15°,165°,195°,and 345°.Comprehensive analysis of the wind direction and wind speed data from the representative stations for meteorological observation of the Bridge shows that the high risk season for vehicle sideslip on section A of the HZMB is summer,with August being the high-risk month;the high-risk season for section B is summer,with July being the high-risk month,and the risk indicator for section B is greater than that for section A.
作者
孙丽烨
夏冬
王静
苏昱丞
黄文敏
黄照亮
SUN Liye;XIA Dong;WANG Jing;SU Yucheng;HUANG Wenmin;HUANG Zhaoliang(Zhuhai Public Meteorological Service Centre,Zhuhai 519000,China;Zhuhai-Macao Meteorological Innovation and Application Research Centre,Zhuhai 519000,China)
出处
《气象与环境学报》
2024年第6期106-112,共7页
Journal of Meteorology and Environment
基金
珠海市气象局科研项目(ZH202106)资助。
关键词
风力
风向角
最大车速
行车安全
Wind force
Wind angle
Maximum vehicle speed
Driving safety
