基于能量被动耗能结构抗震设计方法的研究
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摘要
将结构前两阶振型各自等效为单自由度,采用模态pushover分析确定各等效单自由度的屈服强度系数和延性系数,然后由反应谱计算各阶振型耗散能量需求,利用各振型能量分布曲线,求得各层耗散能量需求,叠加得到各层地震总能量需求,据此确定耗能装置的类型及设计参数。运用该方法对9层钢框架进行了设计,并通过非线性动力分析进行了验证,结果表明该方法精确度符合实际工程需求。
Equivalent single-degree-of-freedom(ESDOF) systems for the first two modes are converted.Modal yield strength and ductility coefficients of the ESDOF system are determined and the distribution of hysteretic energy in each story is got by modal pushover analysis.The energy contribution of each mode is determined using energy spectra and the required amount of energy dissipation is estimated and used to design appropriate energy dissipation system.The application of the method is illustrated by an example of a nine-story steel frame with passive energy dissipation system design.The results from the proposed method agree with the results from the non-linear time-history analysis.
Equivalent single-degree-of-freedom(ESDOF) systems for the first two modes are converted.Modal yield strength and ductility coefficients of the ESDOF system are determined and the distribution of hysteretic energy in each story is got by modal pushover analysis.The energy contribution of each mode is determined using energy spectra and the required amount of energy dissipation is estimated and used to design appropriate energy dissipation system.The application of the method is illustrated by an example of a nine-story steel frame with passive energy dissipation system design.The results from the proposed method agree with the results from the non-linear time-history analysis.
引文
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[4]Chou CC,Uang C M.Establishing absorbed energy spectra-attenuation approach[J].Earthquake Engineering and Structural Dynamics 2000,29(10):1441-1455.
[5]周云,徐彤,周福霖.抗震与减震结构的能量分析方法研究与应用[J].地震工程与工程振动,1999,19(4):133-139.ZHOU Yun,XU Tong,ZHOU Fulin.Research and development of structural seismic design based on energy method[J].Journal of EarthquakeEngineering and Engineering Vibration,1999,19(4):133-139.(in Chinese)
[6]Chou C C,Uang C M.A procedure for evaluating seismic energy demand of framed structures[J].Earthquake Engineering and Structural Dynam-ics,2003,32(2):229-244.
[7]李宁,翟长海,谢礼立.基于能量的模态pushover分析方法[J].建筑结构学报,2009,30(6):101-106.LI Ning,ZHAI Changhai1,XIE Lili.Energy-based modal pushover analysis method[J].Journal of Building Structures,2009,30(6):101-106.(in Chinese)
[8]沈蒲生,朱建华.基于Pushover方法的框筒结构在水平地震作用下的层间耗能研究[J].工程抗震与加固改造,2006,28(3):1-6.SHEN Pusheng,ZHU Jianhua.Analysis of energy dissipation among stories of reinforced concrete frame-tube structure under horizontal Earthquakebased on pushover method[J].Earthquake Resistant Engineering and Retrofitting,2006,28(3):1-6.(in Chinese)
[9]朱建华,沈蒲生.基于能量原理的钢筋混凝土筒体结构抗震性能研究[J].地震工程与工程振动,2006,26(5):109-113.ZHU Jianhua,SHEN Pusheng.Seismic analysis of reinforced concrete frame-core structures based on energy concept[J].Journal of EarthquakeEngineering and Engineering Vibration,2006,26(5):109-113.(in Chinese)
[10]刘哲锋,沈蒲生,龚胡广.钢框架-钢筋混凝土剪力墙结构的地震能量反应分析[J].地震工程与工程振动,2007,27(2):69-73.LIU Zhefeng,SHEN Pusheng,GONG Huguang.Seism ic energy response of steel frame-reinforced concrete shear wall hybrid structures[J].Jour-nal of Earthquake Engineering and Engineering Vibration,2007,27(2):69-73.(in Chinese)
[11]叶列平,程光煜,曲哲,等.基于能量抗震设计方法研究及其在钢支撑框架结构中的应用[J].建筑结构学报,2012,33(11):36-45.YE Lieping,CHENG Guangyu,QU Zhe,et al.Study on energy-based seismic design method and application on steel braced frame structures[J].Journal of Building Structures,2012,33(11):36-45.(in Chinese)
[12]白久林,欧进萍.基于能量平衡的钢筋混凝土框架结构抗震塑性设计方法[J].建筑结构学报2012,(10):22-31.BAI Jiulin,OU Jinping.Seismic plastic design of RC frame structure based on energy balcmce[J].Journal of Building Structures,2012(10):22-31.(in Chinese)
[13]Lin Y Y,Tsai M H,Hwang J S,et al.Direct displacement-based design for building with passive energy dissipation systems[J].Eng.Struct.,2003,25:25-37.
[2]Riddell R,Garcia JE.Hysteretic energy spectrum and damage control[J].Earthquake Eng Struct Dyn,2001;30(12):1791-816.
[3]Nurtug A,Sucuoglu H.Prediction of seismic energy dissipation in SDOF systems[J].Earthquake Engineering and Structural Dynamics,1995,24(9):1215-1223.
[4]Chou CC,Uang C M.Establishing absorbed energy spectra-attenuation approach[J].Earthquake Engineering and Structural Dynamics 2000,29(10):1441-1455.
[5]周云,徐彤,周福霖.抗震与减震结构的能量分析方法研究与应用[J].地震工程与工程振动,1999,19(4):133-139.ZHOU Yun,XU Tong,ZHOU Fulin.Research and development of structural seismic design based on energy method[J].Journal of EarthquakeEngineering and Engineering Vibration,1999,19(4):133-139.(in Chinese)
[6]Chou C C,Uang C M.A procedure for evaluating seismic energy demand of framed structures[J].Earthquake Engineering and Structural Dynam-ics,2003,32(2):229-244.
[7]李宁,翟长海,谢礼立.基于能量的模态pushover分析方法[J].建筑结构学报,2009,30(6):101-106.LI Ning,ZHAI Changhai1,XIE Lili.Energy-based modal pushover analysis method[J].Journal of Building Structures,2009,30(6):101-106.(in Chinese)
[8]沈蒲生,朱建华.基于Pushover方法的框筒结构在水平地震作用下的层间耗能研究[J].工程抗震与加固改造,2006,28(3):1-6.SHEN Pusheng,ZHU Jianhua.Analysis of energy dissipation among stories of reinforced concrete frame-tube structure under horizontal Earthquakebased on pushover method[J].Earthquake Resistant Engineering and Retrofitting,2006,28(3):1-6.(in Chinese)
[9]朱建华,沈蒲生.基于能量原理的钢筋混凝土筒体结构抗震性能研究[J].地震工程与工程振动,2006,26(5):109-113.ZHU Jianhua,SHEN Pusheng.Seismic analysis of reinforced concrete frame-core structures based on energy concept[J].Journal of EarthquakeEngineering and Engineering Vibration,2006,26(5):109-113.(in Chinese)
[10]刘哲锋,沈蒲生,龚胡广.钢框架-钢筋混凝土剪力墙结构的地震能量反应分析[J].地震工程与工程振动,2007,27(2):69-73.LIU Zhefeng,SHEN Pusheng,GONG Huguang.Seism ic energy response of steel frame-reinforced concrete shear wall hybrid structures[J].Jour-nal of Earthquake Engineering and Engineering Vibration,2007,27(2):69-73.(in Chinese)
[11]叶列平,程光煜,曲哲,等.基于能量抗震设计方法研究及其在钢支撑框架结构中的应用[J].建筑结构学报,2012,33(11):36-45.YE Lieping,CHENG Guangyu,QU Zhe,et al.Study on energy-based seismic design method and application on steel braced frame structures[J].Journal of Building Structures,2012,33(11):36-45.(in Chinese)
[12]白久林,欧进萍.基于能量平衡的钢筋混凝土框架结构抗震塑性设计方法[J].建筑结构学报2012,(10):22-31.BAI Jiulin,OU Jinping.Seismic plastic design of RC frame structure based on energy balcmce[J].Journal of Building Structures,2012(10):22-31.(in Chinese)
[13]Lin Y Y,Tsai M H,Hwang J S,et al.Direct displacement-based design for building with passive energy dissipation systems[J].Eng.Struct.,2003,25:25-37.
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