中国铁道科学2012，Vol.33Issue(1)：19-26,8.DOI:10.3969/j.issn.1001-4632.2012.01.04
桥梁结构刚度对高速列车—轨道—桥梁耦合系统动力特性的影响
Influence of Bridge Structure Stiffness on the Dynamic Performance of High-Speed Train-Track-Bridge Coupled System
摘要
Abstract
The dynamic performances of high-speed train-track bridge coupled system are significantly affected by the structure stiffness of bridge, which directly influences the running safety and ride comfort of a train on the bridge. Based on train-track-bridge dynamic interaction theory, the influences of structure stiffness of bridge on the dynamic responses of the coupled system were analyzed using the train-track-bridge dynamic simulation software TTBSIM2. 0, in which a simply supported bridge and double-block ballastless track both commonly used in high-speed railway were chosen to be the study object. Results show that when the stiffness of beam or the lateral stiffness of piers is insufficient, the major dynamic indexes of train and bridge increase dramatically with the decrease of the stiffness, and the running safety and the ride comfort of the train are deteriorated severely. In particular, the resonance of beam excited by passing train may occur if the vertical stiffness of beam is insufficient. When the structure stiffness of bridge satisfies the design code, the dynamic responses of train-bridge system vary little with the change of stiffness. The running speed and track irregularities become the main factors to influence the running safety and ride comfort of train.关键词
高速铁路/桥梁/结构刚度/列车—轨道—桥梁耦合振动/动力特性Key words
High-speed railway/ Bridge/ Structural stiffness/ Train-track-bridge coupled vibration/ Dynamic performance分类
交通工程引用本文复制引用
翟婉明,王少林..桥梁结构刚度对高速列车—轨道—桥梁耦合系统动力特性的影响[J].中国铁道科学,2012,33(1):19-26,8.基金项目
国家自然科学基金重点资助项目(50838006) （50838006）
国家"九七三"计划项目(2007CB714706) （2007CB714706）
铁道部科技研究开发计划项目(2010G017-E) （2010G017-E）
优秀实验室资助项目(50823004) （50823004）
