单层混凝土工业厂房纵向抗震理论研究

发布时间：2018-11-18 12:22

【摘要】：现今单层工业厂房的抗震研究多集中于厂房的横向抗震。但几次大震震害表明,厂房的纵向抗震同样不容忽视。《建筑抗震设计规范》在第9.1.8中对厂房的纵向抗震计算做出规定,但是与该规范第5.2.6中做出的规定在纵向水平地震作用的分配方式的采用上存在不相符的地方。本文以单层工业厂房纵向抗震为研究主题,通过对模型的模拟分析,寻求单层工业厂房纵向抗震计算合理的计算方法。本文利用SAP2000软件,针对不同的厂房形式建立不同的模型,通过对模型进行反应谱分析和时程分析,提取柱间支撑内力进行对比分析,得出结论：预制板单层工业厂房或有内天沟厂房在进行纵向抗震计算时,屋盖产生的水平地震作用宜按照抗侧力构件从属面积上重力荷载代表值的比例分配。对于未按照该计算方法进行设计建造的厂房,在遭遇罕遇地震时很有可能发生严重的破坏,针对这种情况,本文建议在柱间支撑增设粘滞阻尼器来增强厂房纵向抗震能力。本文建立新的带有粘滞阻尼器的模型,通过对新模型的计算分析,发现该种加强方式能很好的减小厂房在地震作用下发生的破坏,是一种有效的加强方法。
[Abstract]:Nowadays, the seismic research of single-story industrial buildings is mainly focused on transverse seismic resistance. However, the earthquake damage of several major earthquakes shows that the longitudinal seismic resistance of the factory building should not be ignored. The Code for Seismic Design of buildings stipulates the longitudinal seismic calculation of the building in 9.1.8. However, there are some inconsistency with the regulation of 5.2.6 in the application of vertical horizontal seismic action distribution mode. In this paper, the longitudinal earthquake resistance of single-story industrial factory buildings is taken as the research topic. Through the simulation and analysis of the model, a reasonable calculation method for longitudinal seismic calculation of single-story industrial buildings is sought. In this paper, SAP2000 software is used to establish different models for different workshop forms. Through the analysis of response spectrum and time history of the model, the internal forces of support between columns are extracted for comparative analysis. It is concluded that the horizontal seismic action produced by the roof should be distributed according to the gravity load representative value on the dependent area of the lateral force member in the longitudinal seismic calculation of the prefabricated single-story industrial factory building or the factory building with inner gutter. For the factory buildings which are not designed and constructed according to the calculation method, serious damage may occur in the event of rare earthquakes. In view of this situation, it is suggested that viscous dampers should be added to the braces between columns to enhance the longitudinal seismic capacity of the buildings. In this paper, a new model with viscous dampers is established. Through the calculation and analysis of the new model, it is found that this kind of strengthening method can reduce the damage of the powerhouse under earthquake and is an effective strengthening method.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU375;TU352.11

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