[1]李志栋,黄晓明,岳学军.半刚性基层沥青路面非连续结构强迫振动声效[J].东南大学学报(自然科学版),2011,41(6):1277-1282.[doi:10.3969/j.issn.1001-0505.2011.06.028]
 Li Zhidong,Huang Xiaoming,Yue Xuejun.Sound analysis of forced vibration feature of discontinuous structure in semi-rigid base asphalt pavement[J].Journal of Southeast University (Natural Science Edition),2011,41(6):1277-1282.[doi:10.3969/j.issn.1001-0505.2011.06.028]
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半刚性基层沥青路面非连续结构强迫振动声效()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第6期
页码:
1277-1282
栏目:
交通运输工程
出版日期:
2011-11-20

文章信息/Info

Title:
Sound analysis of forced vibration feature of discontinuous structure in semi-rigid base asphalt pavement
作者:
李志栋12黄晓明1岳学军2
(1东南大学交通学院,南京 210096)(2河南高远路业集团,新乡 453000)
Author(s):
Li Zhidong12Huang Xiaoming1Yue Xuejun2
(1 School of Transportation, Southeast University, Nanjing 210096, China)
(2 Henan Gaoyuan Road Group, Xinxiang 453000, China)
关键词:
道路工程 半刚性基层沥青路面 非连续结构 冲击加载 强迫振动微分方程 噪声响应频带 非连续性识别
Keywords:
road engineering semi-rigid base asphalt pavement discontinuous structure shock loading differential equation of forced vibration response frequency band of noise discontinuity identification
分类号:
U418.6
DOI:
10.3969/j.issn.1001-0505.2011.06.028
摘要:
为了无损、快速地识别半刚性基层沥青路面的结构非连续状态,实现病害预警和预养护,对冲击作用下路面板体强迫振动机理及其振动噪声特征进行了分析,并对单自由度路面系统的强迫振动微分方程进行求解.研究表明:因土基沉降、低温施工、压实不足等原因,沥青路面将产生结构内部及层间非连续病害; 而非连续状态下的板体强迫振动噪声特征对冲击加载方式、板体尺寸、模量、非连续区域面积等因素最为敏感; 通过有限元声场模拟确定路面非连续性有效识别冲击力为1.0kN,可识别最大非连续面积为4m×4m,最显著强迫振动噪声能量集中在300~800Hz频带内.
Abstract:
In order to identify the discontinuous state of semi-rigid base asphalt pavement structure nondestructively, rapidly, and realize the pavement disease prediction and preventive maintenance , the forced vibration mechanism and noise character in pavement structure under impact loading were analyzed, and forced vibration differential equation for single degree of freedom pavement system is solved. It is shown that the discontinuous disease in the asphalt pavement structure and interlayer comes from foundation settlement, low temperature construction, insufficient compaction and so on, and forced vibration noise character of the pavement are most sensitive to impact loading manner, pavement size, modulus, and the discontinuous area. Finally, by means of finite element simulation of sound field it is ascertained that the impact force of 1. 0 kN is effective to identify the pavement structure discontinuity, and the maximal recognizable discontinuous area is 4 m×4 m, and the majority of forced vibration noise energy is concentrated in the band of 300-800 Hz.

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备注/Memo

备注/Memo:
作者简介: 李志栋(1973—),男,博士生,工程师; 黄晓明(联系人),男,博士,教授,博士生导师,huangxm@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(51178112)、河南省交通科技资助项目(2009P225).
引文格式: 李志栋,黄晓明,岳学军.半刚性基层沥青路面非连续结构强迫振动声效分析[J].东南大学学报:自然科学版,2011,41(6):1277-1282. [doi:10.3969/j.issn.1001-0505.2011.06.028]
更新日期/Last Update: 2011-11-20