近场地震作用下密肋耗能复合墙结构地震响应分析
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摘要
通过非弹性动态方法,改变控制参数的结构,输入不同近场地震波,进行地震响应分析.利用非线性有限元程序IDARC,建立密肋耗能复合墙结构简化分析模型,对同等条件下的密肋耗能复合墙结构与框架剪力墙结构,在近场地震作用下的典型层滞回曲线及结构耗能分布系数,进行对比分析.结果表明:在近场地震作用下密肋耗能复合墙结构,表现出良好的耗能减震能力,是一种较理想的新型抗震结构体系.
The non-elastic dynamic method is used in the seismic response analysis of structure with varied controlling parameters subjected to differential near-field ground motions.IDARC was employed to establish the simplified analysis model of multi-ribbed energy-dissipated composite wall structure.Under the same conditions,the hysteretic curve of typical layer and coefficient of energy distribution of multi-ribbed energy-dissipated composite wall structure and frame shear-wall structure are compared in the near-field ground motions.The results show that the structure has a good performance of energy dissipation and vibration reduction for near-field ground motions and it is a new ideal aseismic structure system.
The non-elastic dynamic method is used in the seismic response analysis of structure with varied controlling parameters subjected to differential near-field ground motions.IDARC was employed to establish the simplified analysis model of multi-ribbed energy-dissipated composite wall structure.Under the same conditions,the hysteretic curve of typical layer and coefficient of energy distribution of multi-ribbed energy-dissipated composite wall structure and frame shear-wall structure are compared in the near-field ground motions.The results show that the structure has a good performance of energy dissipation and vibration reduction for near-field ground motions and it is a new ideal aseismic structure system.
引文
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[3]GBJ5001-2001,建筑抗震设计规范[S].北京:中国建筑工业出版社,2002.GBJ5001-2001,Building code of aseismic designing[S].Beijing:China Architecture and Building Press,2002.(inChinese)
[4]Malhotra P K.Response of buildings to near-field pulse-likeground motions[J].Earthquake Engineering and StructuralDynamics 1999,28:1309-1326.
[5]贾英杰.中高层密肋壁板结构设计理论及设计方法研究[D].西安:西安建筑科技大学,2004.JIA Yingjie.Research on calculation theory and designmethod of multi-ribbed composite wall in moderate high-rise multi-ribbed slab structure[D].Xi’an:Xi’an Universi-ty of Architecture and Technology,2004.(in Chinese)
[6]周福霖.结构工程减震控制[M].北京:地震出版社,1997:4.ZHOU Fulin.Control of earthquake reduction of structureengineering[M].Beijing:Earthquake Press,1997:4(inChinese)
[7]袁泉.密肋壁板轻框结构非线性地震反应分析[D].西安:西安建筑科技大学,2003.YUAN Quan.Nonlinear earthquake response analysis ofmulti-ribbed wall slab with light-weight outer frame struc-ture[D].Xi’an:Xi’an University of Architecture andTechnology,2003.(in Chinese)
[8]Zahrah T F,Hall W J.Earthquake energy absorption inSDOF structures[J].Journal of Structural Engineering,ASCE,1995,110(8):202-245.
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