【作者】 罗伟；

【导师】 陈嵘； 韦凯；

【作者基本信息】 西南交通大学 ， 道路与铁道工程， 2015， 硕士

【摘要】 随着城市建设规模的不断扩大,城市区域环境状况变得越来越复杂。在新的发展形势下,城市轨道交通环境振动问题也正逐渐呈现出新的特点和形势：首先,密集的路网布局正逐渐扩大轨道交通环境振动影响的范围；其次,居民对于生活质量要求的普遍提高使得关注轨道交通环境振动问题的人群正逐渐扩大；最后,城市可持续发展的战略目标正对振动环境影响评价工作的全局性和完整性寄予越来越多的期望。鉴于这样三个方面的原因,开展城市大区域范围内环境振动的预测和评估正逐渐发展成一种客观的现实需求。对于由城市轨道交通引起的环境振动,考虑到小区块预测模型覆盖范围的局限性,针对敏感工点开展局部区块振动预测和评估的传统模式已不能满足新形势下的客观需要。城市轨道交通环境振动的预测和评估不再止于解决个别案例,而客观要求发展新的可行的预测模式,以实现对轨道交通沿线较大区域范围内环境振动分布情况的快速预测和直观呈现。鉴于此,本论文在系统梳理国内外研究成果的基础上,结合具体科研面目和新形势,着眼于地下铁道沿线大区域范围内环境振动的快速预测和可视化管理,首次提出了地下铁道环境振动地图的概念和新的区域环境振动管理理念,并编制了地下铁道环境振动地图软件。主要工作和研究内容包括：(1)搜集和整理国内外城市轨道交通环境振动问题的研究现状,并讨论了开展轨道交通沿线大区域范围内环境振动快速预测和可视化管理的现实意义。(2)结合车辆-轨道耦合系统随机振动分析理论和有限元谐响应分析方法,建立了地下铁道环境振动频域预测模型。(3)参考交通工程噪声地图的定义和研究思路,首次提出了地下铁道环境振动地图的概念。(4)提出地下铁道环境振动地图的设计思路与研制方法,并编制完成了地下铁道环境振动地图软件,实现了对地下铁道沿线大区域范围内环境振动状况的快速预测与可视化管理。更多还原

【Abstract】 With the continuous expansion of the scale of city construction, the regional environmental situation in cities is becoming more and more complex. Track traffic environmental vibration problem in this new climate is gradually showing new situation and characteristics:Firstly, the network layout optimization of rail transit is gradually expanding more distant effects of environmental vibration caused by track traffic. Secondly, for the generally increasing demand for a better quality of life, the population that shows solicitude for environmental vibration induced by track traffic is getting larger. Finally, the strategic goal of sustainable development for cities is increasingly resting its hope on a global and complete environmental impact assessment. In view of the reasons of such three aspects, to carry out the prediction and evaluation of environmental vibration of big block, large area is gradually developing into a kind of objective and practical needs.Considering the limitation of coverage for the small block prediction model, traditional forecast model has been no longer enough for the research on traffic induced vibrations. Prediction and evaluation of urban rail traffic environmental vibration has been no longer remain in solving individual cases, while objectively requires to predict and display the status quo of environment vibration fleetly and intuitively with new feasible prediction model.In view of this, this paper take the focus on the rapid prediction and visualization display of the full area, large range environmental vibration along the underground railroad. First proposed the new management concept of vibration mapping, and developed the environmental vibration mapping software for underground railway.(1) Collected and sorted out the status of the domestic and foreign research on the city orbit traffic environmental vibration. And discussed the practical implications of the rapid prediction and visualization display of full area, large range environmental vibration along the underground railroad.(2) Established the two-dimensional frequency domain prediction model for the underground railway environmental vibration, combining with the random vibration analysis theory for vehicle/track coupling system and the linear elastic finite element analysis method for semi infinite object.(3) First proposed the new management concept of vibration mapping for the environmental vibration induced by underground railway.(4) Put forward the idea and method of developing and designing the environmental vibration mapping software for underground railway. And completed the integrated software for fast prediction and visualization management of the underground railway environmental vibration mapping.更多还原