高层混合结构地震整体损伤指标研究
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摘要
首先基于模态参数,给出高层混合结构在四个损伤状态下的最终软化指标;然后用非线性分析软件CANNY对9个不同结构参数高层混合结构模型进行了近500次不同地震动作用下的非线性时程分析,建立了最大层间位移角与最终软化指标及结构参数之间的关系,以及最大层间位移角和最大总位移角之间的关系;并结合Pushover分析,提出了高层混合结构基于变形和能量的双参数损伤指标,最后通过一高层混合结构的模拟地震振动台试验对建议的各损伤指标量化值进行了验证.
Based on the modal parameters of the structures,the paper presents a proposal of four damage states and the range of final softening index of each state.Then,9 hybrid structures with different structural characteristics are analyzed by structural analysis program CANNY for about 500 times subjected to different ground motions.So,the relationship of the maximum interstory drift and the main structural characteristics,as well as the final softening index is obtained.At the same time,the relationship between the maximum interstory drift and the maximum roof displacement over the height is acquired.Based on the pushover analysis,a damage index of high-rise hybrid structures accounting for maximum deformation and cumulative damage is put forward.Finally,a case study is conducted on a high-rise hybrid structure model tested on the shaking table before,and verifies the quantities of damage indices suggested in the paper.
Based on the modal parameters of the structures,the paper presents a proposal of four damage states and the range of final softening index of each state.Then,9 hybrid structures with different structural characteristics are analyzed by structural analysis program CANNY for about 500 times subjected to different ground motions.So,the relationship of the maximum interstory drift and the main structural characteristics,as well as the final softening index is obtained.At the same time,the relationship between the maximum interstory drift and the maximum roof displacement over the height is acquired.Based on the pushover analysis,a damage index of high-rise hybrid structures accounting for maximum deformation and cumulative damage is put forward.Finally,a case study is conducted on a high-rise hybrid structure model tested on the shaking table before,and verifies the quantities of damage indices suggested in the paper.
引文
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[11]Zhang X,Wong K K F,Wang Y.Performance assessment of moment resistingframes during earthquakes based onthe force analogy method[J].Engineering Structures,2007,29(10):2792.
[12]李国强,周向明,丁翔.高层建筑钢-混凝土混合结构模型模拟地震振动台试验研究[J].建筑结构学报,2001(2):2.LI Guoqiang,ZhOU Xiangming,DI NG Xiang.Shaking table study on a model of steel-concrete hybrid structure tall buildings[J].Journal of Building Structures,2001(2):2.
[13]卜一,吕西林,周颖,等.采用增量动力分析方法确定高层混合结构的性能水准[J].结构工程师,2009,25(2):77.BO Yi,LU Xilin,ZHOU Ying,et al.Studies on the multi-level of hybrid structures using incremental dynamic analysis[J].Structural Engineers,2009,25(2):77.
[14]吕西林.高层建筑结构[M].武汉:武汉理工大学出版社,2003.LU Xilin.High-rise structures[M].Wuhan:Wuhan University of Technology Press,2003.
[15]吕西林.复杂高层建筑结构抗震理论与应用[M].北京:科学出版社,2007.LU Xilin.Seismic theory of complex high-rise structures with application[M].Beijing:Science Press,2007.
[2]Ren WX,Guido D R.Structural damage identification using modal dataⅠ:si mulation verification[J].Journal of Structural Engineering,2002,128(1):87.
[3]Dipasquale E,Cakmak AS.On the relation between local and global damage indices[R].New York:National Center for Earthquake Engineering Research,1989.
[4]李洪泉,欧进萍.剪切型钢筋混凝土结构的地震损伤识别方法[J].哈尔滨建筑大学学报,1996,29(2):8.LI Hongquan,OUJinping.An identification method of shear-type RCframe for earthquake damage[J].Journal of Harbin University of Architecture and Engineering,1996,29(2):8.
[5]李国强,郝坤超,陆烨.框架结构损伤识别的两步法[J].同济大学学报:自然科学版,1998,26(5):483.LI Guoqiang,HAO Kunchao,LU Ye.Two-step approach for damage identification of frame structures[J].Journal of Tongji University:Natural Science,1998,26(5):483.
[6]Ghobarah A,Abou-Elfath H,Biddah A.Response-based damage assessment of structures[J].Earthquake Engineering and Structural Dynamics,1999,28(1):79.
[7]朱红武,王孔藩,唐寿高.模态损伤指标及其在结构损伤评估中的应用[J].同济大学学报:自然科学版,2004,32(12):1589.ZHU Hongwu,WANG Kongfan,TANG Shougao.Modal damage index and its application in structure damage assessment[J].Journal of Tongji Unviversity:Natural Science,2004,32(12):1589.
[8]江近仁,孙景江.砖结构的地震破坏模型[J].地震工程与工程振动,1987,7(1):20.JI ANGJinren,SUN Jinjiang.Seismic damage model of brick structure[J].Earthquake Engineering and Engineering Vibration,1987,7(1):20.
[9]欧进萍,牛荻涛,王光远.多层非线性抗震钢结构的模糊动力可靠性分析与设计[J].地震工程与工程振动,1990,10(4):27.OUJinping,NI U Ditao,WANG Guangyuan.Fuzzy dynamical reliability analysis and design of multi-storey nonlinear a seismic steel structures[J].Earthquake Engineering and Engineering Vibration,1990,10(4):27.
[10]牛荻涛,任利杰.改进的钢筋混凝土结构双参数地震破坏模型[J].地震工程与工程振动,1996,16(4):44.NI U Ditao,REN Lijie.A modified seismic damage model with double variables for reinforced concrete structures[J].Earthquake Engineering and Engineering Vibration,1996,16(4):44.
[11]Zhang X,Wong K K F,Wang Y.Performance assessment of moment resistingframes during earthquakes based onthe force analogy method[J].Engineering Structures,2007,29(10):2792.
[12]李国强,周向明,丁翔.高层建筑钢-混凝土混合结构模型模拟地震振动台试验研究[J].建筑结构学报,2001(2):2.LI Guoqiang,ZhOU Xiangming,DI NG Xiang.Shaking table study on a model of steel-concrete hybrid structure tall buildings[J].Journal of Building Structures,2001(2):2.
[13]卜一,吕西林,周颖,等.采用增量动力分析方法确定高层混合结构的性能水准[J].结构工程师,2009,25(2):77.BO Yi,LU Xilin,ZHOU Ying,et al.Studies on the multi-level of hybrid structures using incremental dynamic analysis[J].Structural Engineers,2009,25(2):77.
[14]吕西林.高层建筑结构[M].武汉:武汉理工大学出版社,2003.LU Xilin.High-rise structures[M].Wuhan:Wuhan University of Technology Press,2003.
[15]吕西林.复杂高层建筑结构抗震理论与应用[M].北京:科学出版社,2007.LU Xilin.Seismic theory of complex high-rise structures with application[M].Beijing:Science Press,2007.
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