【摘要】：以北京市某社區(qū)服務中心為例,進行凹字形平面框架的抗震性能分析。采用振型分解反應譜法進行多遇地震下的計算分析,而后利用彈塑性時程分析方法補充進行罕遇地震下的計算分析。然后為了研究凹字形平面不規(guī)則性,建立了平面更為規(guī)則的回字形結構作為對比模型,分析其平面不規(guī)則對框架整體性的影響。經(jīng)分析表明,本工程框架結構在多遇地震下能夠滿足規(guī)范對于剛度以及承載力的要求。并且在罕遇地震作用下,彈塑性變形也均小于規(guī)范要求的限值。最后通過與回字形平面的框架模型進行比對分析可知,兩種平面類型的結構在小震下的整體性能指標相差不大。本工程的抗震性能分析結論可以作為與本工程類似的凹凸不規(guī)則框架結構的參考。
[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.
【作者單位】： 中國電子工程設計院;
【分類號】：TU352.11
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本文編號：2404383