地震工程学报2016，Vol.38Issue(z1)：144-149,6.DOI:10.3969/j.issn.1000-0844.2016.Supp.1.0144
天津某工业公司机械振动激发波的特征分析
Characteristics of Excited Waves Caused by Mechanical Vibration of an Industrial Plant in Tianj in
摘要
Abstract
In this study,ground motion acceleration was recorded at different sites around a heavy-industry plant in Tianj in.First,we calculated the level of the vibration caused by the industrial machines,which could provide the basis for the vibration impact assessment.Second, we obtained the three dominant frequencies of ground motion,which were 5.1,5.6,and 12.5 Hz,by frequency spectrum analysis.Third,we estimated the correlation coefficients between the site near the vibration source (point O)and other sites by correlation analysis and discussed the rea-son why the coefficients were different.Finally,we adopted the two-station method in seismology to measure the group velocities of the surface waves between the industrial plant and nearby fac-tories influenced by the vibration.The measured velocities were 86,97,and 105 m/s and the wavelengths were 16.8,17.4,and 8.6 m at frequencies of 5.1,5.6,and 12.5 Hz,respectively. The present study can provide fundamental design parameters for reducing and isolating the vibration caused by machines.关键词
振级/频谱分析/相关分析/群速度/双台法Key words
vibration level/frequency spectrum analysis/correlative analysis/group velocity/two-station method分类
通用工业技术引用本文复制引用
叶庆东,毛远凤,王生文,管见,郭俊峰..天津某工业公司机械振动激发波的特征分析[J].地震工程学报,2016,38(z1):144-149,6.基金项目
中国地震局第一监测中心主任基金 （）
