Safety Analysis of Wind-Induced Driving of High Pier Bridges
in High-Altitude Regions
MA Peixin1, ZHANG Yongshui2, LIU Lin3, HU Weifeng3, CHEN Ning4
(1. Highway Construction Administration of Qinghai Province, Xining 810000, Qinghai, China;
2. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China;
3. CCCC Infrastructure Maintenance Group CO., Ltd., Beijing 100112, China;
4. School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China)
Abstract：Aiming at the anti-wind performance of driving on the high pier bridge in the canyon area of high altitude in Qinghai Province, the aerodynamic characteristics of vehicle-bridge combination of the typical van type truck were analyzed by using the professional CFD software Fluent, and the aerodynamic parameter curves of the vehicle and the bridge under different wind attack angles were obtained respectively. On this basis, the response analysis and evaluation of wind-vehicle-bridge system under different road conditions, pavement conditions and cross wind speeds were carried out, and the corresponding speed limit operation standards were obtained. The research results show that: in the speed range of 100 km/h, the critical wind speed of the vehicle is greater than 35m/s when the vehicle is driving along the “dry” road surface with different road conditions, in the speed range of 100km/h, when the vehicle is driving along the road with the “very good” and “good” wet road conditions, the critical wind speed of the vehicle is 30 m/s; when the road conditions are “normal”, the critical wind speed and vehicle speed are 30m/s and 90km/h respectively, which indicates that the critical wind speed of vehicle driving safety and vehicle speed will both decrease with the deterioration of road grade; when the road condition level is “very good” and “good”, in the range of the given wind speed (15~35 m/s) and vehicle speed (60~100 km/h), the vehicle will not have driving comfort problems; when the road condition level is “normal” and the vehicles driving speed exceeds 80km/h, the total root mean square acceleration of vehicle weight is greater than 0.8, and the behavior of driving on the bridge will produce uncomfortable feelings for the drivers and passengers.
马培新1，张永水2，刘林3，胡伟锋3，陈宁4. 高海拔峡谷地带高墩桥梁风致行车安全性分析[J]. 重庆交通大学学报（自然科学版）, 2020, 39(08): 72-76.
MA Peixin1, ZHANG Yongshui2, LIU Lin3, HU Weifeng3, CHEN Ning4. Safety Analysis of Wind-Induced Driving of High Pier Bridges
in High-Altitude Regions. Journal of Chongqing Jiaotong University(Natural Science), 2020, 39(08): 72-76.
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2020, Vol. 39 
