Research on the 50meter level monitoring and early warning technology for ice on the Wuhan Tianxingzhou Yangtze River Bridge
Chen Yingying1, Zhu Chengying2,3, He Liwei1, Jia Wenqian1, Tan Jing1, Zhai Hongnan4
1. Hubei Meteorological Service Center,Wuhan 430205; 2. Key Laboratory of Transportation Meteorology of China Meteorological Administration,Nanjing 210041; 3. Nanjing Joint Institute for Atmospheric Sciences,Nanjing 210041; 4. Wuhan Meteorological Bureau,Wuhan,430040
Abstract：The article utilizes the observational data from the highway traffic meteorological station at the Tianxingzhou Yangtze River Bridge in Wuhan,collected every 10 minutes from January 11 to 19,2023,and combining information on traffic accidents and road closures caused by weather conditions,various meteorological factors of a local icing process on the bridge were analyzed.Thermal spectrum technology was employed to invert the spatially refined distribution characteristics of low temperature differences on the road surface in winter.The results showed that under rainy weather,the temperature difference between the air and the road surface was not significant.However,during clear skies,the peak-to-valley characteristics of road surface temperature were pronounced.When strong cold air arrived,the road surface temperature of the bridge could synchronize with the air temperature and drop to freezing point.During this snowfall and icing weather process,the road surface temperature at the bridge station on the same road section was on average 2 ℃lower than that at the ordinary station,with a maximum difference of 3.3 ℃.Two days after the weather turned sunny,the temperature remained significantly lower in the small hours,with a maximum difference of 3.6 ℃.Thermal spectrum maps were detected at 50-meter intervals during the sensitive period of low road surface temperature,revealing a maximum temperature difference of 4.4 ℃across the entire road section.The rapid changes in road surface temperature within a short distance,leading to local icing,were the primary meteorological cause of traffic accidents on river-crossing bridges in winter.
陈英英, 朱承瑛, 贺莉微, 贾文茜, 谭静, 翟红楠. 武汉天兴洲长江大桥桥面结冰50米级监测预警技术研究[J]. 气象水文海洋仪器, 2025, 42(6): 70-73.
Chen Yingying, Zhu Chengying, He Liwei, Jia Wenqian, Tan Jing, Zhai Hongnan. Research on the 50meter level monitoring and early warning technology for ice on the Wuhan Tianxingzhou Yangtze River Bridge. Meteorological Hydrological and Marine Instrument, 2025, 42(6): 70-73.
2025, Vol. 42 
