...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Acoustics >Structure-borne noise from long-span steel truss cable-stayed bridge under damping pad floating slab: Experimental and numerical analysis
【24h】

Structure-borne noise from long-span steel truss cable-stayed bridge under damping pad floating slab: Experimental and numerical analysis

机译：阻尼垫浮动下的长跨度钢桁架斜拉桥的结构 - 传承噪声：实验和数值分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study investigates the structure-borne noise characteristics and a control measure of the long-span steel truss cable-stayed bridge (LSTCB) which are induced by running trains in urban rail transit. A frequency-domain theoretical model of a vehicle-track coupling interaction system, in which the vibration reduction track structure of damping pad floating slab (DPFS) are taken into account, is firstly established, from which the wheel-rail dynamic force, the force transmission rate, and the force transmitted to the bridge can be obtained. After that, a vibration model of the LSTCB and a noise model of the steel truss girder are established, which are based on the refined finite element method (FEM) and statistical energy analysis (SEA) method respectively, to predict the structure-borne noise of the LSTCB. Next, the near-field noise test of an LSTCB under DPFS at an urban rail transit line, are analyzed and used to validate the prediction model. Then, the structure-borne noise characteristics of the LSTCB and noise reduction effect of DPFS are studied. It is found that the wheel-rail transfer to the track slab and bridge are influenced by the track structure system; the attenuation rate of the near-field sound pressure level (SPL) is relatively slow in the range of 20-100 Hz, fast after 100 Hz, and faster than the far-field SPL; the vibration energies that input to the LSTCB are mainly distributed in the bridge deck, longitudinal web, and transverse web; the sound radiation capability of the bridge deck is stronger than that of other subsystems; compared with the common track structure (embedded sleeper), the track structure of DPFS can reduce the overall sound pressure level of the LSTCB by 10-13 dB(A). (C) 2019 Elsevier Ltd. All rights reserved.
机译：本研究调查了通过在城市轨道交通中运行火车引起的长跨度钢桁架斜拉桥（LSTCB）的结构 - 传播噪声特性和控制措施。车辆轨道耦合交互系统的频域理论模型，其中考虑了阻尼垫浮板（DPF）的减振轨道结构，首先建立了轮轨动态力，力可以获得传输速率，并且可以获得传递到桥梁的力。之后，建立了LSTCB的振动模型和钢桁架梁的噪声模型，其分别基于精制的有限元方法（FEM）和统计能量分析（海）方法，以预测结构传播的噪音LSTCB。接下来，分析了城市轨道交通线下DPF下LSTCB的近场噪声测试，并用于验证预测模型。然后，研究了DPF的LSTCB的结构 - 传承噪声特性和DPF的降噪效果。发现轮轨转移到轨道板和桥梁受轨道结构系统的影响;近场声压级（SPL）的衰减率在20-100Hz的范围内相对较慢，100 Hz之后快，并且比远场SPL更快;输入到LSTCB的振动能量主要分布在桥式甲板，纵向纤维网和横向网上;桥式甲板的声辐射能力比其他子系统更强大;与公共轨道结构（嵌入式睡眠机）相比，DPF的轨道结构可以将LSTCB的总体压力水平降低10-13dB（A）。 （c）2019 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Applied Acoustics》 |2020年第1期|106988.1-106988.15|共15页
  • 作者

    Liang Lin; Li XiaoZhen; Zheng Jing; Lei KangNing; Gou Hongye;

  • 作者单位

    Southwest Jiaotong Univ Dept Bridge Engn Chengdu Sichuan Peoples R China|Southwest Jiaotong Univ MOE Key Lab High Speed Railway Engn Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Dept Bridge Engn Chengdu Sichuan Peoples R China|Southwest Jiaotong Univ MOE Key Lab High Speed Railway Engn Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Dept Bridge Engn Chengdu Sichuan Peoples R China|Southwest Jiaotong Univ MOE Key Lab High Speed Railway Engn Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Dept Bridge Engn Chengdu Sichuan Peoples R China|Southwest Jiaotong Univ MOE Key Lab High Speed Railway Engn Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Dept Bridge Engn Chengdu Sichuan Peoples R China|Southwest Jiaotong Univ MOE Key Lab High Speed Railway Engn Chengdu 610031 Sichuan Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Urban rail transit; Long-span steel truss cable-stayed bridge; Vehicle-track coupling interaction system; Track of damping pad slab; Noise reduction effect;

    机译：城市轨道交通;长跨度钢桁架斜拉桥;车辆轨道耦合交互系统;轨道阻尼垫板;降噪效果;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号