| 轨道型式对地铁与建筑物共建结构振动响应的影响 |
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| 引用本文： | 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). |
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| 作者姓名： | 周萌 韦凯 周顺华 肖军华 宫全美 |
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| 作者单位： | 1. 同济大学,交通运输工程学院,上海,201804
2. 西南交通大学,牵引动力围家重点实验室,四川,成都,610031 |
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| 基金项目： | 上海市“科技创新行动计划”重点科技项目(09231201600); 上海市博士后科研基金资助项目(10R21416300) |
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| 摘 要： | 以上海某地铁站与建筑物共建工程为例,现场实测由于地铁运行引起的车站站厅层、上部结构各楼层的动力响应,建立道床—共建结构—地基二维动力有限元模型。通过对比分析计算和实测的共建结构竖向振动加速度的时域谱和1/3倍频程振级谱,探讨普通轨道、科隆蛋高弹扣件轨道和钢弹簧浮置板轨道在引起共建结构振动响应方面的差异。研究结果表明:采用科隆蛋高弹扣件轨道时,共建结构同一位置的加速度峰值约是普通轨道的1/2,而固有频率为6 Hz的钢弹簧浮置板轨道的加速度峰值仅为普通轨道的1/10左右,但钢弹簧浮置板轨道引起的振动周期和持时相对较长;科隆蛋高弹扣件轨道与钢弹簧浮置板轨道均有明显的减振效果,所不同的是前者对25 Hz以下、后者对25 Hz以上频段的竖向振动有较好减振效果;钢弹簧浮置板固有频率的变化对该共建结构振动响应的影响很小。
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| 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 |
Influence of Different Track Types on the Vibration Response of the Jointly-Built Structure of Subway and the Buildings |
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| ZHOU Meng,WEI Kai,ZHOU Shunhua,XIAO Junhua,GONG Quanmei.Influence of Different Track Types on the Vibration Response of the Jointly-Built Structure of Subway and the Buildings[J].China Railway Science,2011,32(2). |
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| Authors: | ZHOU Meng WEI Kai ZHOU Shunhua XIAO Junhua GONG Quanmei |
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| Institution: | ZHOU Meng1,WEI Kai2,ZHOU Shunhua1,XIAO Junhua1,GONG Quanmei1(1.School of Transportation Engineering,Tongji University,Shanghai201804,China,2.Traction Power State Key Laboratory,Southwest Jiaotong University,Chengdu Sichuan610031,China) |
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| 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,... |
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| Keywords: | Damping track High-elastic fastener track Steel-spring floating slab track Jointly-built structure Underground railway Vibration |
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