罕遇地震下设黏滞阻尼器钢框架-混凝土核心筒结构减震效果评估
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摘要
为评估设非线性液体黏滞阻尼器钢框架-混凝土核心筒结构在罕遇地震作用下的减震效果,以某典型的高层建筑实际工程为背景,采用PERFORM-3D程序建立三维计算模型,分别输入3条地震波进行非线性动力时程分析。然后根据原结构和减震结构的分析结果,从楼层位移、楼层位移角、塑性损伤和结构耗能分布等方面进行了对比分析。分析结果表明:设非线性液体黏滞阻尼器后,钢框架-混凝土核心筒结构的楼层位移、层间位移角和塑性损伤都明显减小,并达到罕遇地震作用下的预期减震目标;对比原结构,由于阻尼器消耗了大部分地震能量,使得减震结构构件的非弹性耗能有所减少。针对罕遇地震作用下的减震效果,对减震结构方案提出了具体改善措施,以供实际工程参考。
To evaluate damping effects of steel frame-concrete core wall structure with viscous dampers under severe earthquake,a typical high-rise building with and without dampers are modeled and analyzed by PERFORM-3D program. Nonlinear dynamic time-history analyses are performed under 3 inputs of earthquake records,respectively.And then comparison of the analysis results is conducted with original structure in four respects such as floor displacement,story drifts,plastic damage and energy dissipation etc. The analysis results show that the use of nonlinear fluid viscous dampers on the steel frame-concrete core wall structural system results in obviously reducing seismic responses of the structure,comparing with the case without dampers; when the dampers installed,the floor displacement,story drifts and the plastic damage of the structure decrease and then can meet the damping goal under severe earthquake; when the structure installed dampers,inelastic energy dissipation of the structure decrease significantly because of damper 's energy dissipation. On this basis,some valuable suggestions about improving the damping structure are put forward into practical application.
To evaluate damping effects of steel frame-concrete core wall structure with viscous dampers under severe earthquake,a typical high-rise building with and without dampers are modeled and analyzed by PERFORM-3D program. Nonlinear dynamic time-history analyses are performed under 3 inputs of earthquake records,respectively.And then comparison of the analysis results is conducted with original structure in four respects such as floor displacement,story drifts,plastic damage and energy dissipation etc. The analysis results show that the use of nonlinear fluid viscous dampers on the steel frame-concrete core wall structural system results in obviously reducing seismic responses of the structure,comparing with the case without dampers; when the dampers installed,the floor displacement,story drifts and the plastic damage of the structure decrease and then can meet the damping goal under severe earthquake; when the structure installed dampers,inelastic energy dissipation of the structure decrease significantly because of damper 's energy dissipation. On this basis,some valuable suggestions about improving the damping structure are put forward into practical application.
引文
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[13]GB5011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2011.GB5011-2010 Code for seismic design of building[S].Beijing:China Architecture&Building Press,2011(in Chinese)
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[15]ASCE/SEC 41-06 Seismic rehabilitation of existing buildings[S].Reston:American Society of Civil Engineers,2007.
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[17]JGJ3-2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2011.JGJ3-2010 Technical specification for concrete structures of tall building[S].Beijing:China Architecture&Building Press,2011.(in Chinese)
[2]汪大绥,周建龙.我国高层建筑钢-混凝土混合结构发展与展望[J]建筑结构学报,2010,31(6):62-70WANG Dasui,ZHOU Jianlong.Development and prospect of hybrid high-rise building structures in China[J].Journal of Building structures,2010,31(6):62-70.(in Chinese)
[3]李国强.我国高层建筑钢结构发展的主要问题[J]建筑结构学报.1998(2):24-32.LI Guoqiang.Existing problems in development of tall steel buildings in China[J].Journal of Building Structures,1998(2):24-32.(in Chinese)
[4]马良喆,陈永祁,赵广鹏.银泰中心主塔楼采用液态黏滞阻尼器的减振设计[J]建筑结构,2009,39(5):23-28.MA Liangzhe,CHEN Yongqi,ZHAO Guangpeng.Passive dissipation design with liquid viscous damper for Silvertie Centre Building[J].Journal of Building Structures,2009,39(5):23-28.(in Chinese)
[5]陈永祁,曹铁柱.液态黏滞阻尼器在盘古大观高层建筑上的抗震应用[J]钢结构,2009,24(8):39-46.CHEN Yongqi,CAO Tiezhu.Vibration reduction of fluid viscous dampers on Beijing high-rise buildings in Pangu Plaza[J].Steel construction,2009,24(8):39-46.(in Chinese)
[6]丁洁民,何志军,王华琪等.同济大学教学科研综合楼复杂高层结构分析与设计[J]建筑结构,2008,38(10):1-5.DING Jiemin,HE Zhijun,WANG Huaqi,et al.Structural analysis and design of the complex high-rise structure of Teaching and Research Complex of Tongji university[J].Journal of Building Structures,2008,38(10):1-5.(in Chinese)
[7]龚治国,吕西林,翁大根.超高层主楼与裙房黏滞阻尼器连接减振分析研究[J]土木工程学报,2007,40(9):8-15.GONG Zhiguo,LV Xilin,WENG Dagen.Analysis of vibration reduction of fluid linking dampers connecting main building with podium[J].China Civil Engineering Journal,2007,40(9):8-15.(in Chinese)
[8]李霆,王小南,范华冰等.武汉保利广场混合减震连体高层结构设计[J]建筑结构,2012,42(12):1-7LI Ting,WANG Xiaonan,FAN Huabing,et al.Structure design on connected double-tower of Wuhan Ploy Plaza with mixed energy dissipation devices[J].Journal of Building Structures,2012,42(12):1-7.(in Chinese)
[9]曾明,赵均.钢框架-混凝土核心筒结构设液体黏滞阻尼器的减震控制分析[J].防灾减灾工程学报,2013,33(5):524-529.ZENG Ming,ZHAO Jun.Seismic reduction and control analysis of steel frame-concrete core wall structure with viscous damper[J].Journal of Disaster Prevention and Mitigation Engineering,2013,33(5):524-529.(in Chinese)
[10]孙芳垂,江欢成,朱象清,等.世界建筑结构设计精品选—中国篇[M].北京:中国建筑工业出版社,2001.SUN Fangchui,JIANG Huancheng,ZHU Xiangqing,et al.World excellence building structure design of China[M].Beijing:China Architecture&Building Press,2001.(in Chinese)
[11]曾明.PERFORM-3D基本操作与实例[M].北京:中国铁道出版社,2013.ZENG Ming.PERFORM-3D basic operation and examples[M].Beijing:China Railway Publishing House,2013.(in Chinese)
[12]Powell G H.A state of the art educational event performance based design using nonlinear analysis[R].Berkeley:Computers and Structures Inc.,2007.
[13]GB5011-2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2011.GB5011-2010 Code for seismic design of building[S].Beijing:China Architecture&Building Press,2011(in Chinese)
[14]Naish D.Wallace JW,Fry JA,Klemencic R.Reinforced concrete link beams:alternative details for improved construction[R].SGEL Report2009/06,University of California,Los Angeles,CA.
[15]ASCE/SEC 41-06 Seismic rehabilitation of existing buildings[S].Reston:American Society of Civil Engineers,2007.
[16]北京金土木软件技术有限公司.Pushover在建筑工程抗震设计中的应用[M].北京:中国建筑工业出版社,2010.Beijing Civil King Software Technology Co.,Ltd.Application of Pushover in the seismic design of building engineering[M].Beijing:China Architecture&Building Press,2010.(in Chinese)
[17]JGJ3-2010高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社,2011.JGJ3-2010 Technical specification for concrete structures of tall building[S].Beijing:China Architecture&Building Press,2011.(in Chinese)
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