框架-剪力墙偏心结构地震反应分析
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摘要
本文分别用空间杆系模型和空间实体模型对框架-剪力墙偏心结构进行弹塑性时程分析,比较二者的差别。研究发现,平面布置相同,偏心距不同情况下,两种模型的计算结果随着偏心距的增大而增大,并通过比较得出在分析塑性变形较大的结构时,采用空间实体模型进行分析,才能反映结构真实的地震反应;当保持偏心距不变时,结构空间弹塑性反应随着框架与剪力墙的相对刚度的增大而增大,用实体模型进行分析,才能更好地揭示结构的抗震性能。
The elasto-plastic seismic response analysis on frame-shear wall asymmetric structures with spatial model of element and spatial solid model is carried out in the paper.The analysis results are compared.It is found that the computational results of two models are increasing with the increase of eccentricity when the general layout is same and the eccentricity is different.The conclusion is drawn that frame-shear wall asymmetric structure with bigger plastic deformation can reflect the real reaction when applying spatial solid model by comparing the analysis results.When the eccentricity is a constant,the elasto-plastic response of structure is increasing with the increase of relative stiffness between frame and shear wall.In this case,a frame-shear wall asymmetric structure with spatial solid model can reveal the seismic performance of structure better.
The elasto-plastic seismic response analysis on frame-shear wall asymmetric structures with spatial model of element and spatial solid model is carried out in the paper.The analysis results are compared.It is found that the computational results of two models are increasing with the increase of eccentricity when the general layout is same and the eccentricity is different.The conclusion is drawn that frame-shear wall asymmetric structure with bigger plastic deformation can reflect the real reaction when applying spatial solid model by comparing the analysis results.When the eccentricity is a constant,the elasto-plastic response of structure is increasing with the increase of relative stiffness between frame and shear wall.In this case,a frame-shear wall asymmetric structure with spatial solid model can reveal the seismic performance of structure better.
引文
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[2]张新培.钢筋混凝土抗震结构非线性分析[M].科学出版社,2004Zhang Xin-pei.The Non-linear Analysis of Reinforced Conconcrete Seismic Structures[M].Beijing:Science Press,2004(in Chinese)
[3]GB50010-2002,混凝土结构设计规范[S].北京:中国建筑工业出版社,2002GB50010-2002,Code for design of concrete structures[S].Beijing:Chian Building Industry Press,2002(in Chinese)
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