中国铁道科学2011，Vol.32Issue(2)：33-40,8.
轨道型式对地铁与建筑物共建结构振动响应的影响
Influence of Different Track Types on the Vibration Response of the Jointly-Built Structure of Subway and the Buildings
摘要
Abstract
Based on a project in Shanghai that a subway station and building were jointly constructed, the dynamic response of the station hall and the upper floors of the structure by metro operation was field measured. The two-dimensional dynamic finite element model of railway track bed-jointly built structure-foundation was established. Through comparatively analyzing the calculated and the field tested time-domain spectrum and 1/3 octave spectrum of the vertical vibration acceleration of the jointly-built structure, the differences of the vibration response in the jointly-built structure aroused by the general track, Cologne-egg high-elastic fastener track and steel-spring floating slab track were investigated. The main conclusions show that the peak acceleration amplitude of the jointly-built structure is about half of that of the general track at the same position when adopting Cologne-eggs high-elastic fastener. The peak acceleration amplitude of steel-spring floating slab track whose natural frequency is 6 Hz is only about 1/10 of that of the general track at the same position. However, as for the cycle and the duration of the vertical vibration, steel-spring floating slab track is relatively longer. The vibration-reduction effect of both Cologne-egg high-elastic fastener track and steel-spring floating slab track is obvious. The difference is that the former (the latter) is provided with better vertical vibration-reduction effect on the vibration of the frequency band below 25 Hz (above 25 Hz). The change of the natural frequency of steel-spring floating slab track has little effect on vibration response with regard to this jointly-built project.关键词
减振轨道/高弹扣件轨道/钢弹簧浮置板轨道/共建结构/地下铁道/振动分类
通用工业技术引用本文复制引用
周萌,韦凯,周顺华,肖军华,宫全美..轨道型式对地铁与建筑物共建结构振动响应的影响[J].中国铁道科学,2011,32(2):33-40,8.基金项目
上海市"科技创新行动计划"重点科技项目(09231201600) （09231201600）
上海市博士后科研基金资助项目(10R21416300) （10R21416300）
