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重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2020, Vol. 39 ›› Issue (08): 72-76.DOI: 10.3969/j.issn.1674-0696.2020.08.11

• 桥梁与隧道工程 • 上一篇    下一篇

高海拔峡谷地带高墩桥梁风致行车安全性分析

马培新1，张永水2，刘林3，胡伟锋3，陈宁4   

  1. (1. 青海省公路建设管理局，青海 西宁 810000；2. 重庆交通大学 土木工程学院，重庆 400074； 3. 中交基础设施养护集团有限公司，北京 100112； 4. 湖南科技大学 土木工程学院，湖南 湘潭 411201)
  • 收稿日期:2019-01-16 修回日期:2019-03-07 出版日期:2020-08-18 发布日期:2020-08-25
  • 作者简介:马培新（1969—），男，青海西宁人，高级工程师，主要从事高速公路建设与管理方面的工作。E-mail: 474910962@qq.com 通信作者：张永水（1965—），男，山西河津人，教授，主要从事桥梁工程设计理论与工程控制方面的研究。E-mail: zhangyongshui@sina.com
  • 基金资助:
    青海省科学技术厅应用基础项目（2016-ZJ-727）

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. (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)
  • Received:2019-01-16 Revised:2019-03-07 Online:2020-08-18 Published:2020-08-25

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摘要： 针对青海高海拔地区峡谷地带高墩桥梁行车抗风性能，采用CFD软件Fluent对典型厢式货车进行了车辆—桥梁组合气动特性分析，分别获取了在不同风攻角情况下的车辆、桥梁的气动参数曲线，在此基础上开展了不同路况、路面条件及不同横风风速下的风车桥响应分析和评价，得到对应的限速运营标准。研究结果表明：在100 km/h车速范围内，车辆沿着不同路况等级“干”路面行驶时，车辆行车临界风速均大于35 m/s。在100 km/h车速范围内，车辆沿路况等级为“非常好”和“好”的“湿”路面行驶时，车辆的行车临界风速为30 m/s，路况等级为“一般”时，行车临界风速和车速分别为30 m/s和90 km/h，表明车辆行车安全临界风速和车速均会随着道路等级的变差而降低；在路况等级为“非常好”和“好”时，在给定的风速（15~35 m/s）和车速（60~100 km/h）范围内行驶时车辆均不会发生行车舒适性问题，当路况等级为“一般”，车辆的行驶速度超过80 km/h时，车辆总体计权均方根加速度大于0.8时，桥上行车将会对驾乘人员产生不舒适的感受。

关键词: 桥梁工程, 高墩桥梁, 气动特性, 风车桥分析, 行车安全性

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 vehicles 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.

Key words: bridge engineering, high pier bridge, aerodynamic characteristics, wind-vehicle-bridge analysis, driving safety

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