| 侧风作用下静动态车-桥系统气动特性数值模拟研究 |
| |
| 引用本文： | 李永乐,汪斌,徐幼麟,廖海黎. 侧风作用下静动态车-桥系统气动特性数值模拟研究[J]. 土木工程学报, 2011, 0(Z1): 87-94 |
| |
| 作者姓名： | 李永乐 汪斌 徐幼麟 廖海黎 |
| |
| 作者单位： | 西南交通大学;香港理工大学; |
| |
| 基金项目： | 国家自然科学基金(50508036); 教育部新世纪优秀人才支持计划(NCET-06-0802); 四川省杰出青年学科带头人计划(2009-15-406) |
| |
| 摘 要： | 我国现阶段正处于轨道交通建设的高峰时期,线路中桥梁占有相当大的比重,车辆在桥梁上运行时构成车-桥系统共同承受侧向风的作用,车辆和桥梁间存在着显著的相互气动影响。基于数值模拟方法,对侧向风作用下车-桥体系的空气绕流场进行静动态模拟分析,将静态数值模拟气动力系数与风洞试验结果进行对比,基于动态气动统流特性,提出将桥面上方流场分为6个特征区域,并进一步分析风速和车速对车-桥系统气动特性的影响。分析表明,体系绕流状态具有三维特性,气动力随着车速和风速变化显著。研究结论对车-桥系统绕流及静动态气动荷载的确定具有一定的参考价值。
|
| 关 键 词： | 车-桥系统 气动特性 侧向风 数值模拟 气动力系数 |
Numerical simulation of aerodynamic characteristics for static and dynamic vehicle-bridge system under cross wind |
| |
| Li Yongle Wang Bin, Xu Youlin Liao Haili. Numerical simulation of aerodynamic characteristics for static and dynamic vehicle-bridge system under cross wind[J]. China Civil Engineering Journal, 2011, 0(Z1): 87-94 |
| |
| Authors: | Li Yongle Wang Bin Xu Youlin Liao Haili |
| |
| Affiliation: | Li Yongle1 Wang Bin1,2 Xu Youlin2 Liao Haili1(1.Southwest Jiaotong University,Chengdu 610031,China,2.Hong Kong Polytechnic University,Hong Kong,China) |
| |
| Abstract: | Nowadays,construction of railway network proceeds with high intensity in China,and a large portion of the network construction are bridges.When a train runs on a bridge,the vehicle-bridge system has to be subjected to cross wind together,and there is an intensive interaction between the aerodynamic forces of vehicle and bridge.Using the numerical simulation method,the air flow fields of static and dynamic vehicle-bridge system under cross wind are analyzed in this study.The aerodynamic coefficients of the s... |
| |
| Keywords: | vehicle-bridge system aerodynamic characteristic cross wind numerical simulation aerodynamic coefficient |
| 本文献已被 CNKI 等数据库收录！ |
|
