高层工业厂房异常振动测试与加固试验

了研究高层工业厂房的异常振动成因与加固方法，采用有限元分析和现场振动测试相结合的方法，建立了高层工业厂房三维有限元模型，进行了高层工业厂房加固前的有限元分析和现场振动测试。针对高层工业厂房作业舒适程度要求严格、采光要求高、加固空间受限等要求，为解决机器设备与高层工业厂房的共振问题，提出了采用短肢剪力墙加固的现场加固方案，并进行了加固前后有限元分析结果和现场振动测试结果的对比分析。结果表明:机器设备安装在工业厂房的高层后，机器设备与厂房共振是造成高层工业厂房异常振动的主要原因；加固后高层工业厂房的强度和刚度得到明显提高，高层工业厂房长度方向固有频率由2.45 Hz提高至5.87 Hz，高层工业厂房宽度方向固有频率由2.94 Hz提高至7.83 Hz，与机器设备沿高层工业厂房水平方向频率不在共振区间，高层工业厂房的加速度和速度振动特性得到改善，取得了良好的加固效果；振动测试结果和加固方法可为高层工业厂房的设计和加固提供借鉴和参考。

Experiment on Abnormal Vibration Test and Reinforcement of High-rise Industrial Building

In order to study the abnormal vibration cause and reinforcement method of high-rise industrial building, finite element analysis method and field vibration test method were adopted, a three-dimensional finite element model of high-rise industrial building was established. Finite element analysis and field vibration test was carried out before reinforcement. Based on strict comfort level, limited reinforcement space and high lighting requirement of high-rise industrial building, a field reinforcement scheme with short leg shear wall was put forward. Comparison analysis of finite element calculation results and field vibration test results before and after reinforcement were carried out. The results show that the machines and high-rise industrial building resonated after machines are installed at the high level of industrial building, and it is the main reason for the abnormal vibration of high-rise industrial building. Strength and stiffness of reinforced high-rise industrial building are obviously improved, natural frequency of length direction of high-rise industrial building is improved from 2.45 Hz to 5.87 Hz, natural frequency of width direction of high-rise industrial building is improved from 2.94 Hz to 7.83 Hz. Vibration frequency of machines is not in the resonant interval with high-rise industrial building. Vibration characteristics of high-rise industrial building are improved and good reinforcement effects are obtained. Vibration test results and reinforcement methods can provide reference for the design and reinforcement of high rise industrial buildings.