考虑施工缝影响的框架结构地震反应时程分析
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摘要
在总结框架试验研究成果的基础上,运用动力时程分析方法,对有施工缝框架和整浇框架的非弹性抗震性能进行了研究。采用层间剪切模型和三线性恢复力模型,分别输入8度多遇地震和7度罕遇地震作用下的迁安地震波、ElCentro地震波和天津地震波,对两个框架的弹塑性地震反应进行了模拟。将有施工缝框架和整浇框架的顶层位移、层间最大位移、层间最大剪力进行了对比分析。模拟结果表明:有施工缝框架和整浇框架,在迁安波、ElCentro波和天津波的作用下,结构顶层的位移时程曲线和加速度时程曲线随着地震动时间的变化规律是基本一致的。
On the basis of the frame experiment,the inelastic seismic response characteristics of testing frame with construction joints and monolithic cast frame are studied by dynamic time-history method.Using interface layer shear model and the trilinear restoring force model,the elastic-plastic seismic responses of two frames are simulated by inputting Qian'an earthquake waves,El Centro earthquake waves and Tianjin earthquake waves under 8 degree frequently-occurred earthquake action and 7 degree seldom-occurred earthquake action.The top drift,the maximum inter-storey drift and the maximum inter-storey shear of frames are analyzed and compared with monolithic cast frame.Dynamic time-history analysis results show that the vibration rule of top drift time-history curves and top acceleration time-history curves of the frame with construction joints and the monolithic cast frame are very similar with the time vibration of earthquake motion under Qian'an earthquake waves,El Centro earthquake waves and Tianjin earthquake waves.
On the basis of the frame experiment,the inelastic seismic response characteristics of testing frame with construction joints and monolithic cast frame are studied by dynamic time-history method.Using interface layer shear model and the trilinear restoring force model,the elastic-plastic seismic responses of two frames are simulated by inputting Qian'an earthquake waves,El Centro earthquake waves and Tianjin earthquake waves under 8 degree frequently-occurred earthquake action and 7 degree seldom-occurred earthquake action.The top drift,the maximum inter-storey drift and the maximum inter-storey shear of frames are analyzed and compared with monolithic cast frame.Dynamic time-history analysis results show that the vibration rule of top drift time-history curves and top acceleration time-history curves of the frame with construction joints and the monolithic cast frame are very similar with the time vibration of earthquake motion under Qian'an earthquake waves,El Centro earthquake waves and Tianjin earthquake waves.
引文
[1]东南大学.建筑结构抗震设计[M].北京:中国建筑工业出版社,1999.
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[2]吕西林,卢文生.R.C.框架结构的振动台试验和面向设计的时程分析方法[J].地震工程与工程振动,1998,18(2):48-58.
[3]王亚勇.关于设计反应谱、时程法和能量方法的探讨[J].建筑结构学报,2000,21(1):21-28.
[4]吕西林,金国芳,吴晓涵.钢筋混凝土结构非线性有限元理论与应用[M].上海:同济大学出版社,1997.
[5]苏晓生.掌握MATLAB6.0及其工程应用[M].北京:科学出版社,2002.
[6]MAGRAB E B.MATLAB原理与工程应用[M].高会生,译.北京:电子工业出版社,2002.
[7]MATHEWS J H,FINK K K.Numerical methods using matlab[M].北京:电子工业出版社,2002.
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