腔室耗能型高速铁路风障的减载抗风性能
Wind Resistance Performance of the Windbreak with Air Chambers Dissipating Energy Applied in High-speed Railway
查看参考文献13篇
|
文摘
|
高速铁路挡风风障在减小列车在大风环境中运行的气动荷载的同时,自身具备良好的抗风能力和结构稳定性亦十分重要。为此,提出和设计出一种新型的由双层带孔薄板构成的透风式腔室耗能型挡风风障,并采用数值模拟方法对无挡风风障单层结构和腔室结构挡风风障的挡风作用及自身抗风性能进行计算和分析。结果表明,单层、腔室型挡风风障均可明显减少横风作用于列车的气动荷载,但它们的流场结构存在较明显的差异,且腔室结构风障所受的气动力较小;与单层风障相比,腔室型风障对列车气动荷载具有更好的减载效果以及更强的自身抗风能力和结构稳定性。通过改变腔室结构的两层薄板上透风孔的孔径比,可调节两层薄板的受力分配。腔室耗能型挡风风障的提出,为挡风风障的研究提供新的思路和方法,也可为高速列车的防风设计提供参考与依据。 |
|
其他语种文摘
|
It is also very important to improve resistant capabilities of wind resistance and structural stability of the windbreak while reducing train aerodynamic load. A new type of windbreak is proposed with double-layer structure forming a cavity chamber with hole for energy dissipation of crosswind. Numerical simulation is used to analyse and compare the effects of two kinds of windbreak in the reduction of aerodynamic force acting on the train and their own wind-resistance performance. The results show that the two types of windbreaks can significantly reduce the train aerodynamic load under the action of crosswind, and of course, there is obvious difference between them, and the aerodynamic force acting on the windbreak with cavity chamber structure is small than on another one with single layer structure. The new windbreak has better effect in aerodynamic load shedding for the train, stronger resistant capabilities of wind resistance and structural stability. By changing the aperture ratio of leak hole on the two layer plates, force distribution on them can be adjusted for the windbreak with chambers. This new type of windbreak is a new idea and will provide some useful references for design of the wind protection system for high speed train. |
|
来源
|
机械工程学报
,2014,50(4):99-106 【核心库】
|
|
DOI
|
10.3901/jme.2014.04.099
|
|
关键词
|
高速列车
;
横风
;
风障
;
腔室耗能型
;
抗风性能
|
|
地址
|
1.
北京交通大学土木建筑工程学院, 北京, 100044
2.
中国科学院力学研究所, 北京, 100190
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
0577-6686 |
|
学科
|
铁路运输 |
|
基金
|
国家自然科学基金
;
"十一五"国家科技支撑计划重大
;
中国博士后科学基金
|
|
文献收藏号
|
CSCD:5080684
|
参考文献 共
13
共1页
|
|
1.
Quinn A D. An investigation of the wind-induced rolling moment on a commercial vehicle in the atmospheric boundary layer.
Journal of Automobile Engineering,2007,21(11):1367-1379
|
CSCD被引
2
次
|
|
|
|
|
2.
Coleman S A. Experimental study of the aerodynamic behavior of high sided lorries in cross winds.
Journal of Wind Engineering and Industrial Aerodynamics,1994,54(3):401-429
|
CSCD被引
6
次
|
|
|
|
|
3.
Baker C J. Behaviour of road vehicles in unsteady cross winds.
Journal of Wind Engineering and Industrial Aerodynamics,1993,49(1):439-448
|
CSCD被引
3
次
|
|
|
|
|
4.
Baker C J. Assessment of wind tunnel testing techniques for ground vehicles in cross winds.
Journal of Wind Engineering and Industrial Aerodynamics,1990,33(1):429-438
|
CSCD被引
4
次
|
|
|
|
|
5.
Tatsuo N. Minimizing the effect of natural disasters.
Japan Railway & Transport Review,2000(3):52-59
|
CSCD被引
1
次
|
|
|
|
|
6.
盛其平. 高速铁路上的侧风问题.
铁道标准设计,2006(4):19-21
|
CSCD被引
2
次
|
|
|
|
|
7.
刘凤华. 不同类型挡风墙对列车运行安全防护效果的影响.
中南大学学报,2006,37(1):176-182
|
CSCD被引
22
次
|
|
|
|
|
8.
董香婷. 风障对侧风作用下列车行车安全影响的数值模拟研究.
铁道学报,2008,30(5):36-40
|
CSCD被引
14
次
|
|
|
|
|
9.
张健. 铁路防风栅抗风性能风洞试验研究与分析.
铁道科学与工程学报,2007,4(1):13-17
|
CSCD被引
13
次
|
|
|
|
|
10.
郑继平.
南疆线桥梁挡风墙结构性能研究,2009
|
CSCD被引
1
次
|
|
|
|
|
11.
毛军. 侧风风场特征对高速列车气动性能作用的研究.
铁道学报,2011,33(2):22-33
|
CSCD被引
28
次
|
|
|
|
|
12.
王福军.
计算流体动力学分析-CFD软件原理与应用,2004
|
CSCD被引
1166
次
|
|
|
|
|
13.
周宇. k-ω SST两方程湍流模型中参数影响的初步分析.
空气动力学学报,2010,28(2):213-217
|
CSCD被引
50
次
|
|
|
|
|
了解气象卫星更多信息，请访问