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gao su tie lu ( jing hu hu ning hu hang xian ) gui dao bu ping shun pu fen xi
Author(s): 
Pages: 1-6
Year: Issue:  4
Journal: Journal of Railway Science and Engineering

Keyword:  高速铁路轨道不平顺谱车体振动相干分析;
Abstract: 利用改进的Welch周期图法计算了京沪、沪杭、沪宁等高速铁路的轨道不平顺功率谱密度,从波长和幅值2个角度分析其轨道不平顺特征,并对成因进行探析;利用相干理论对轨道不平顺与车体振动加速度进行分析,探讨高速线路轨道不平顺引起的车体不利波长。研究结果表明:京沪、沪杭、沪宁高速铁路普遍存在2.8~2.9,6.45~6.5,24~25和32~33m不利波长范围的周期性轨道不平顺;高速铁路高低不平顺对车体垂向加速度影响显著;各高铁线水平和扭曲不平顺对车体垂、横向振动不利波长主要为2.0~3.5m窄带周期性波长。
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