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文章采用现场实测和有限元动力分析研究电子厂房的微振动响应,采用加速度拾振器测试了电子厂房修建前环境振动大小,采用ANSYS软件建立了厂房有限元动力分析模型,模拟地脉动作用下厂房内地面振动大小。电子厂房施工完毕后再次测量厂房内地坪的微振动,通过厂房修建前后的实测振动数据分析厂房刚性地坪对地面微振动幅值和频率的影响,比较了有限元动力分析结果与实测结果的差异。结果发现:场地振动主要由小于10Hz低频振动控制,厂房刚性地坪对低频振动的控制能力优于高频振动,可以减小厂房地面振动大小;厂房内部机械振源对地面振动幅值和频率有极大影响。
In this paper, the field experiment and finite element dynamic analysis are used to study the micro-vibration response of the electronic factory building. The vibration amplitude of the electronic factory building before the construction is tested by accelerometer. ANSYS software is used to establish the finite element dynamic analysis model of the workshop. The size of the ground vibration. After construction of the electronic factory, the micro-vibration of the floor in the factory was measured again. The influence of the rigid floor of the factory on the amplitude and the frequency of the ground micro-vibration was analyzed through the measured vibration data before and after the construction of the factory. The difference between the finite element dynamic analysis and the measured data was compared . The results show that the vibration of the site is mainly controlled by the low-frequency vibration less than 10Hz, the control ability of the rigid floor of the plant for low-frequency vibration is better than that of the high-frequency vibration, which can reduce the vibration amplitude of the plant floor. The internal vibration amplitude and frequency Great influence.