| 车致振动在盖挖逆作法施工地下结构中的传播规律研究 |
| Propagation Characteristic of Vehicle induced Vibration in Underground Structures Being Constructed by Cover and Excavation Up down Method |
| 投稿时间：2013-12-13 |
| 中文关键词:城际铁路 盖挖逆作法施工地下结构 动力响应 现场测试 列车 地下结构系统耦合振动 |
| 英文关键词:intercity railway underground structures being constructed by cover and excavation up down method dynamic response field test vehicle underground structures system coupled vibration |
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| 中文摘要: |
| 以某铁路车站站场下地下结构盖挖逆作法施工为工程背景，首先现场测试分析了城际铁路列车通过时地下结构的振动响应，其后建立了动车组 轨道结构 地下结构系统耦合动力分析模型，仿真分析了城际铁路列车通过地下结构的全过程，系统探讨了地下结构的车致振动响应及其空间传播规律，揭示了地下结构车致振动机理。研究结果表明，地下结构车致振动随着与运营线路的距离加大而逐渐衰减，且衰减速度逐渐减小；结构动力响应随列车运行时速的提高而增大。 |
| 英文摘要: |
| Based on the underground structure being constructed by cover and excavation up down method under a railway station yard, the vibration response of the underground structures was tested when intercity train was operating. The dynamic analysis model of EMU track structure underground structures coupled system is set up. The structure vibration response and propagation characteristic of vehicle induced vibration are analysed systematically while intercity train running on the underground structures by means of the theories of random vibration. The mechanism of vehicle induced vibration of underground structures is revealed. The results of the study indicated that the vehicle induced vibration response of underground structures and the decay rate are getting weaker gradually with increasing distance from railway line. The structural dynamic response increases with increased train speed. |
| 马坤全,朱金波.车致振动在盖挖逆作法施工地下结构中的传播规律研究[J].石家庄铁道大学学报(自然科学版),2015,(2):38-44. |
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