浅谈凹字形框架结构的抗震性能
发布时间：2019-01-08 08:59
【摘要】：以北京市某社区服务中心为例,进行凹字形平面框架的抗震性能分析。采用振型分解反应谱法进行多遇地震下的计算分析,而后利用弹塑性时程分析方法补充进行罕遇地震下的计算分析。然后为了研究凹字形平面不规则性,建立了平面更为规则的回字形结构作为对比模型,分析其平面不规则对框架整体性的影响。经分析表明,本工程框架结构在多遇地震下能够满足规范对于刚度以及承载力的要求。并且在罕遇地震作用下,弹塑性变形也均小于规范要求的限值。最后通过与回字形平面的框架模型进行比对分析可知,两种平面类型的结构在小震下的整体性能指标相差不大。本工程的抗震性能分析结论可以作为与本工程类似的凹凸不规则框架结构的参考。
[Abstract]:Taking a community service center in Beijing as an example, the seismic behavior of concave plane frame is analyzed. The mode decomposition response spectrum method is used to calculate and analyze the frequent earthquakes, and the elastic-plastic time-history analysis method is used to supplement the calculation and analysis of rare earthquakes. Then, in order to study the irregularity of concave plane, a more regular circular structure of plane is established as a contrast model, and the influence of plane irregularity on the integrity of frame is analyzed. The analysis shows that the engineering frame structure can meet the requirements of rigidity and bearing capacity of the code under the frequent earthquake. And under the rare earthquake, the elastic-plastic deformation is less than the limit value required by the code. Finally, by comparing with the frame model of the return plane, it can be seen that the overall performance indexes of the two types of structures under small earthquakes are not different. The conclusion of seismic performance analysis of this project can be used as a reference for concave and convex irregular frame structures similar to this project.
【作者单位】： 中国电子工程设计院;
【分类号】：TU352.11
，
本文编号：2404383
[Abstract]:Taking a community service center in Beijing as an example, the seismic behavior of concave plane frame is analyzed. The mode decomposition response spectrum method is used to calculate and analyze the frequent earthquakes, and the elastic-plastic time-history analysis method is used to supplement the calculation and analysis of rare earthquakes. Then, in order to study the irregularity of concave plane, a more regular circular structure of plane is established as a contrast model, and the influence of plane irregularity on the integrity of frame is analyzed. The analysis shows that the engineering frame structure can meet the requirements of rigidity and bearing capacity of the code under the frequent earthquake. And under the rare earthquake, the elastic-plastic deformation is less than the limit value required by the code. Finally, by comparing with the frame model of the return plane, it can be seen that the overall performance indexes of the two types of structures under small earthquakes are not different. The conclusion of seismic performance analysis of this project can be used as a reference for concave and convex irregular frame structures similar to this project.
【作者单位】： 中国电子工程设计院;
【分类号】：TU352.11
，
本文编号：2404383
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