摘要
使用ABAQUS对试验2榀框架建立有限元模型,1榀为整浇结构(ZJ),1榀为带施工缝结构(DF)。将数值分析结果与试验结果对比,两者较好吻合可确定数值模型的正确性。对2榀框架模型进行时程分析,将位移时程、底部剪力等结果做对比分析,结果表明:在7度罕遇地震和8度多遇地震下,DF框架顶层和首层的位移峰值均大于ZJ框架;ZJ框架剪力峰值几乎均大于DF框架。由此得出施工缝的存在对框架结构抗震性能确有不利影响,在设计与施工中应加强施工缝的处理,提高其强度以降低对结构抗震性能的不利影响。
In this paper,authors established a finite element model of two frames of experiment with ABAQUS,the one is integral pouring structure（ ZJ）,and the other is the structure with construction joints（ DF）. Through the comparison of simulation result and the experiment results,the finite element models are right when they coincide well. This paper uses time-history analysis to study two frame models of experiment and frame models of different construction joints. Based on the analysis of displacement time-history and shear time-history,the results show that under the 7 degree rare earthquakes and 8 degree frequent earthquakes,for the displacement maximum of two floors,DF frame is bigger than ZJ frame. And for the shear maximum of bottom,ZJ frame is bigger than DF. The results show that construction joints have detrimental effect to the frames. When construction joints are processed well,the detrimental effect can be reduced or the detrimental effect will increase.
出处
《施工技术》
CAS
北大核心
2014年第4期12-16,共5页
Construction Technology
基金
天津市自然科学基金项目(11JCYBJC03100)
关键词
框架结构
施工缝
抗震
时程分析
有限元分析
structural frames
construction joints
seismic
time-history analysis
finite element analysis
