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首页 > 过刊浏览>2018年第46卷第11期 >1520-1527. DOI:10.11908/j.issn.0253-374x.2018.11.008
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城市高架轨道多层隔振系统影响参数匹配
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[cstr]
作者:
作者单位:

上海材料研究所,同济大学

中图分类号:

TQ332

基金项目:

国家自然科学基金项目（51708422，51678446）


Parameter Matching on Multi-layer Vibration Isolation System of Viaduct Rail Transit
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    摘要:

    以轨道交通30 m双线混凝土简支箱梁桥为研究对象，考虑扣件轨道板支承桥梁支座多层隔振系统内部耦合机理，建立车轨桥有限元模型(FEM).通过现场试验数据验证模型有效性.利用该模型展开多工况计算分析，研究各层隔振元件刚度的改变对车体、轨道结构、桥梁结构振动响应特性和综合隔振效果的影响规律，获取参数匹配原则.结果表明：高架轨道各层隔振元件宜采用匹配设计，可在改善沿线环境隔振效果的同时，兼顾车轨桥各层子系统动力响应特性.

    Abstract:

    By taking two simply supported box girder bridges of 30 m as example, a systematic dynamic simulation model of vehicletrackbridge was established, with a consideration of the coupling mechanism of multilayer vibration isolation system. The finite element model(FEM) was verified by a set of field tests. Good agreement between measurement and predicted results proved the effectiveness and accuracy of the model. With the validated simulation model, the effect of resilient parameters on the dynamic response of vehicle, track, slab, bridge wing plate, web plate, bottom plate and bridge pier, was obtained. Finally, parameter matching principle was presented. The results indicate that an optimized elastic parameters matching design of viaducts may improve the isolation efficiency for the vibration environment along railway lines, and ameliorate the dynamic properties of each substructure of vehiclerailbridge systems.

    参考文献
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刘艳,罗雁云.城市高架轨道多层隔振系统影响参数匹配[J].同济大学学报(自然科学版),2018,46(11):1520~1527

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  • 收稿日期:2018-01-15
  • 最后修改日期:2018-09-13
  • 录用日期:2018-08-13
  • 在线发布日期: 2018-11-29
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