铁道科学与工程学报2018，Vol.15Issue(1)：1-7,7.
编组长度对高速列车表面交变压力载荷的影响
Numerical simulation of impact of train length on alternating pressure load
摘要
Abstract
Based on the standard κ-ε equation turbulence mode, using sliding mesh method, different length of trains (3 cars, 4 cars, 5cars and 8cars) passing by each other, operation and passing in the tunnel of worst length were all simulated. The pressure load on train surface was analyzed. Numerical results were compared with measurements from the full-scale train test. The wave shape fits well and the maximum error is below 6%. The results showed that the amplitude of pressure tail wave reduced by 11% in trains with 3 cars to 8 cars when pass by each other. The distribution regularity of pressure in the train is not changed by the train length, but the effect of the train length on pressure amplitude is obvious when operate and pass in the tunnel of worst length. The peak to peak of pressure reduced by 14.0% in trains with 3 cars to 8 cars when operation in tunnel, the value reduced by 26.4% when passing in tunnel.关键词
高速列车/列车长度/交会/隧道/交变压力Key words
high-speed train/train length/passing by each other/tunnel/alternating pressure分类
交通工程引用本文复制引用
周丹,贾丽荣,牛纪强..编组长度对高速列车表面交变压力载荷的影响[J].铁道科学与工程学报,2018,15(1):1-7,7.基金项目
湖南省自然科学基金资助项目(14JJ3028) （14JJ3028）
中国铁路总公司重大课题资助项目(2016ZB17) （2016ZB17）
湖南省研究生科研创新资助项目(CX2015B046) （CX2015B046）
