中国铁道科学2012，Vol.33Issue(1)：41-46,6.DOI:10.3969/j.issn.1001-4632.2012.01.07
某特长水下隧道气动效应试验研究
Experimental Research on the Aerodynamics Effect ofan Extra-Long Underwater Tunnel
摘要
Abstract
Experimental research was carried through on the aerodynamic effects produced by CRH2-061C EMU passing the down line of an extra-long underwater tunnel with the speed from 180 to 320 km · h-1 round trip by means of field test. Results show that the transient pressure, train induced wind and aerodynamic load inside tunnel as well as the micro-pressure waves increase with vehicle speed, while the comfort degree decreases with vehicle speed. Both the micro-pressure waves and the first wave pressure gradient of the south entrance of the tunnel are less than those of the north entrance. The chief reason is that the buffer structural types of the entrances are different. The aerodynamic load of ancillary facility in tunnel and the change value of 3 s transient pressure in the train are below the required values of relevant standard. Passengers feel an aural discomfort caused by pressure change when CRH2-061C EMU passes the tunnel with a speed over 250 km · h-1. Based on the results, we suggest that the reasonable negotiation speed of CRH2-061C EMU should be 260 km · h-1. Connected aisle in tunnel should be opened or energy absorbing material should be fixed up to attenuate the propagation energy of pressure wave. Compound control standard for comfort degree is studied and proposed.关键词
水下隧道/气动效应/瞬变压力/微气压波/舒适度/现场测试/试验研究Key words
Underwater tunnel/ Aerodynamic effect/ Transient pressure/ Micro-pressure wave/ Comfort/ Field test/ Experimental research分类
交通工程引用本文复制引用
马伟斌,俞翰斌,付连著,张千里,程爱君..某特长水下隧道气动效应试验研究[J].中国铁道科学,2012,33(1):41-46,6.基金项目
铁道部科技研究开发计划项目(11140F32) （11140F32）
