地铁引发环境振动的时频能量评价方法
Time-Frequency Energy Evaluation Method of the Vibration Induced by Underground Subway

作者: 张 斌 , 宗 刚 , 李广振 , 任晓崧 :同济大学,土木工程学院结构工程与防灾研究所,土木工程防灾国家重点实验室,上海;

关键词: 时频分析时频能量评价场地振动地铁Time-Frequency Analysis Time-Frequency Energy Evaluation Ground Vibration Underground Subway

摘要:
振动测试与评价是现代城市轨交建设环评工作不可或缺的工作内容之一,如何合理有效的对振动进行评价是近年来的研究热点。基于振动信号时频分析,提出了地铁引发场地振动响应的时频能量评价方法。优选Margenau-Hill-Spectrogram时频分布作为基本时频分布类型,对地铁实测信号的时频特性进行了统计分析,而后对地铁振动信号进行了局部化时频能量和累积时频能量的深入分析,并与传统评价方进行了对比。研究结果表明,地铁引发的场地振动信号具备显著的局部化时频特性,其局部化时频能量和累积时频能量均具有较好的统计稳定性,时频能量评价指标可较好涵盖传统评价指标表征特点的同时,对信号能量的描述更为准确和全面,时频能量评价方法适用于地铁引发场地振动的环境评价。

Abstract: Evaluation of environmental vibration is essential to environmental dynamic testing and analysis. How to reasonably evaluate the vibration is a widely concerned issue. This paper proposed the time-frequency energy analysis method. Firstly, the Margenau-Hill-Spectrogram time-frequency distribution was selected as the optimal analysis distribution and statistical analysis of the time- frequency characteristics of the measured vibration signals was given. Secondly, further analysis of the local time-frequency energy and accumulated time-frequency energy was done. By comparing with traditional evaluation methods, the results show that the vibration induced by underground subway has remarkable local time-frequency characteristics, and that both the local and accumulated time-frequency energy has statistics stability. The time-frequency energy evaluation can be used to replace the traditional evaluation method and to describe the energy accurately and comprehensively. Time-frequency energy evaluation is suitable for the vibration induced by underground subway.

文章引用: 张 斌 , 宗 刚 , 李广振 , 任晓崧 (2014) 地铁引发环境振动的时频能量评价方法。 土木工程, 3, 176-188. doi: 10.12677/HJCE.2014.36022

参考文献

[1] 夏禾, 吴萱, 于大明 (1999) 城市轨道交通系统引起的环境振动问题. 北方交通大学学报, 4, 1-6.

[2] 陈建国, 夏禾, 陈树礼, 苏木标 (2010) 运行列车引起的周围地面震动规律研究. 工程力学, 1, 98-103.

[3] L. G. Kurzweil (1982) Ground-borne noise and vibration. Journal of Sound and Vibration, 86, 321-328.

[4] 楼梦麟, 李守继, 丁洁民, 陆秀丽 (2007) 基于多点输入的地铁引起房屋振动评价研究. 振动与冲击, 12, 84-87.

[5] 高广运, 何俊峰, 李志毅等 (2010) 列车运行引起的地面振动衰减分析. 交通科学与工程, 1, 74-78.

[6] 沈莹, 郑建国, 陈龙珠 (2010) 工程结构环境振动影响评价指标研究. 工程抗震与加固改造, 5, 1-7.

[7] (2007) 铁路环境振动测量. 中华人民共和国铁道行业标准, TB/T3152-2007.

[8] (2005) 住宅建筑室内振动限制及其测量方法标准. 中华人民共和国标准, GB/T50355-2005.

[9] 雷晓燕, 圣小珍 (2004) 铁路交通噪声与振动. 科学出版社, 北京, 229.

[10] (1991) JBJ22-1991, 中华人民共和国行业标准:隔振设计规范. 中国建筑工业出版社, 北京.

[11] YSJ55-1990. 中华人民共和国冶金部工业标准 (1990) 机器动荷载作用下建筑物承重结构的振动计算和隔振设计规程. 冶金工业出版社, 北京.

[12] 尹皓, 李耀增, 辜小安, 李晏良 (2010) 高速铁路环境振动特性研究. 铁道劳动安全卫生与环保, 1, 32-36.

[13] 葛哲学, 陈仲生 (2006) MATLAB时频分析技术及其应用. 人民邮电出版社, 北京, 2-5, 66-82.

[14] Boashash, B. (2003) Time frequency signal analysis and processing. Library of Congress Cataloging in Publication Data, Hungary Press.

[15] Auger, F., Flandrin, P., Goncalves, P. and Lemoine, O. (1995-1996) Time-frequency toolbox. Post & and Telecom Press, Beijing.

[16] Papandreou-Suppappola, A. (2003) Applications in time-frequency signal processing. CRC Press LLC, Boca Raton.

[17] Zhang, B., Zong, G., Li, W.T. and Shan, T.T. (2013) Optimal time-frequency distribution for analyzing non-stationary signal of ground vibration induced by subway. In: Recent Advances in Environmental Vibration, TongJi University Press, Shanghai, 81-87.

[18] 吕鹏, 宗刚, 李文涛, 单涛涛 (2013) 地铁引发场地振动的实测信号能量分析. 工程力学, 6, 325-328.

[19] 李文涛 (2014) 地铁引发场地振动的实测与数值模拟研究. 同济大学, 上海.

分享
Top