车-线-隧垂向环境振动预测辛模型及其应用

王平; 杨帆; 韦凯

doi:10.6052/j.issn.1000-4750.2015.12.0973

车-线-隧垂向环境振动预测辛模型及其应用

王平^1,2,
杨帆^1,2,
韦凯^1,2,

1.
高速铁路线路工程教育部重点实验室, 成都 610031;
2.
西南交通大学土木工程学院, 成都 610031

基金项目: 国家自然科学基金高铁联合基金项目（U1434201，U1234201）；国家杰出青年科学基金项目（51425804）；国家自然科学基金面上项目（51578468）；中央高校基本科研业务费专项资金项目（2682015CX087）

详细信息

作者简介:
王平(1969-),男,湖北宜昌人,教授,博士,从事铁路轨道安全理论研究(E-mail:wping@home.swjtu.edu.cn);杨帆(1987-),男,江苏淮安人,博士生,从事轨道交通系统动力学研究(E-mail:yangfan_swjtu@126.com).

通讯作者:
韦凯(1980-),男,山西临汾人,副研究员,博士后,从事轨道交通系统动力学及环境振动噪声问题研究(E-mail:wei_mike@163.com).

中图分类号: U211.3
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- 文章访问数: 342
- HTML全文浏览量: 26
- PDF下载量: 123
出版历程
- 收稿日期: 2015-12-08
- 修回日期: 2016-03-20
- 刊出日期: 2017-05-24

SYMPLECTIC MODEL AND ITS APPLICATION OF VERTICAL ENVIRONMENT VIBRATION PREDICTION ABOUT VEHICLE-TRACK-TUNNEL COUPLED SYSTEM

WANG Ping^1,2,
YANG Fan^1,2,
WEI Kai^1,2,

1.
Key Laboratory of High-speed Railway Engineering, Ministry of Education, Chengdu 610031, China;
2.
School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China

More Information

Corresponding author:
WEI Kai: 10.6052/j.issn.1000-4750.2015.12.0973

摘要

摘要: 结合随机振动虚拟激励法、无穷周期链式结构的辛数学方法及有限元谐响应分析法，提出了考虑扣件胶垫刚度频变特性的车-线-隧垂向环境振动预测的辛模型。以南京地铁1号线为研究对象，利用等效线性动黏弹性模型之一的Martin-Davidenkov模型来描述土体加卸载对应的应力-应变非线性关系，将地表土层垂向振动加速度级的理论计算结果与实测数据进行对比，二者在整个频域内的吻合度较高，在中心频率为50 Hz位置处两者的最大峰值结果仅相差0.6 dB，表明实测线路上的轨道不平顺水平和计算条件较为接近，验证了车-线-隧垂向环境振动预测的辛模型及其参数选取方法合理，在频域范围内有较好的预测精度及效率。
- 车-线-隧 /
- 环境振动 /
- 虚拟激励法 /
- 辛数学 /
- 刚度频变
Abstract: By combining the random vibration Pseudo Excitation Method (PEM), symplectic mathematics of infinitely periodic sub-structures, and harmonic response finite element analysis, a prediction model of environment vertical vibration induced by a vehicle-track-tunnel coupled system is proposed which accounts for the frequency-dependent stiffness of the rail pad. Taking Nanjing's Metro Line 1 Project as the research object, a Martin-Davidenkov model, a type of equivalent linear visco-elastic model, was used to describe the relationship between soil loading and unloading and nonlinear stress-strain. Theoretical results of vertical acceleration of the surface soil are compared with the measured data, and they agree well in the whole frequency domain but have a maximum peak difference of 0.6 dB at the centre frequency of 50 Hz. The conclusion indicates that the track irregularity on the testing subway line is close to the calculated condition, and the prediction model for environment vertical vibration of the vehicle-track-tunnel coupled system has better predictive accuracy and efficiency in the frequency domain and its parameter selection method is reasonable.
- vehicle-track-tunnel /
- environment vibration /
- pseudo excitation method /
- symplectic mathematics /
- frequency-dependent stiffness

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参考文献(17)

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文章访问数: 342
HTML全文浏览量: 26
PDF下载量: 123
被引次数: 15

车-线-隧垂向环境振动预测辛模型及其应用

作者简介: 王平(1969-),男,湖北宜昌人,教授,博士,从事铁路轨道安全理论研究(E-mail:wping@home.swjtu.edu.cn);杨帆(1987-),男,江苏淮安人,博士生,从事轨道交通系统动力学研究(E-mail:yangfan_swjtu@126.com).

通讯作者: 韦凯(1980-),男,山西临汾人,副研究员,博士后,从事轨道交通系统动力学及环境振动噪声问题研究(E-mail:wei_mike@163.com).

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出版历程

SYMPLECTIC MODEL AND ITS APPLICATION OF VERTICAL ENVIRONMENT VIBRATION PREDICTION ABOUT VEHICLE-TRACK-TUNNEL COUPLED SYSTEM

Corresponding author: WEI Kai: 10.6052/j.issn.1000-4750.2015.12.0973

期刊类型引用(7)

其他类型引用(8)

计量

出版历程

目录

作者简介:
王平(1969-),男,湖北宜昌人,教授,博士,从事铁路轨道安全理论研究(E-mail:wping@home.swjtu.edu.cn);杨帆(1987-),男,江苏淮安人,博士生,从事轨道交通系统动力学研究(E-mail:yangfan_swjtu@126.com).

通讯作者:
韦凯(1980-),男,山西临汾人,副研究员,博士后,从事轨道交通系统动力学及环境振动噪声问题研究(E-mail:wei_mike@163.com).

Corresponding author:
WEI Kai: 10.6052/j.issn.1000-4750.2015.12.0973