| 不同类型挡风墙对列车运行安全防护效果的影响 |
| |
| 引用本文： | 刘凤华.不同类型挡风墙对列车运行安全防护效果的影响[J].中南大学学报(自然科学版),2006,37(1):176-182. |
| |
| 作者姓名： | 刘凤华 |
| |
| 作者单位： | 中南大学,土木建筑学院,湖南,长沙,410075 |
| |
| 基金项目： | 铁道部科技研究开发计划 |
| |
| 摘 要： | 采用二维粘性不可压缩雷诺平均应力方程,在横风风速、路堤高度、挡风墙高度、设置位置相同时,分别对加筋对拉式、“L”型、薄型和土堤式这4种挡风墙背风侧车辆的气动力进行数值模拟计算。计算结果表明：加筋对拉式挡风墙中车辆受到的侧向力和侧滚力矩最小,防护效果最好,其次是“L”型和薄型挡风墙,防护效果最差的是土堤式挡风墙。
|
| 关 键 词： | 挡风墙 气动力 数值模拟 |
| 文章编号： | 1672-7207(2006)01-0176-07 |
| 收稿时间： | 2005-08-14 |
| 修稿时间： | 2005年8月14日 |
Wind-proof effect of different kinds of wind-break walls on the security of trains |
| |
| LIU Feng-hua.Wind-proof effect of different kinds of wind-break walls on the security of trains[J].Journal of Central South University:Science and Technology,2006,37(1):176-182. |
| |
| Authors: | LIU Feng-hua |
| |
| Institution: | School of Civil and Architectural Engineering, Central South University, Changsha 410075, China |
| |
| Abstract: | The numerical simulation calculation was carried out to obtain the aerodynamic force of the trains with four kinds of wind-break walls.The two dimension incompressible viscous N-S equation was used,with the cross-wind speed,height,position of wind-break wall and height of the embankment being the same.Calculation results show that the lateral force and overturning moment of the train are the smallest for the wind-break wall of the tendon type,so its wind-proof effect is the best,while the effects of the wall with "L" shape and over-thin rank second,but the effect of the earth type is the least. |
| |
| Keywords: | wind-break wall aerodynamic force numerical simulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
