消能减震结构的损伤集中分布研究
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摘要
消能减震结构是一种应用前景非常广泛的结构抗震体系。利用能量平衡的原理,采用质点系振动模型,通过对建筑结构模型进行地震响应和能量耗散的时程分析,讨论了在结构中设置薄弱层即消能层,控制结构在地震中的损伤集中分布在结构消能层的理论可行性,研究了所布置阻尼器及结构薄弱层的参数对损伤的集中程度的影响。结果表明设置消能层能够集中损伤,并可以减少消能层上部主体结构的截面尺寸,达到节省建筑材料提高经济效益目的。
Passive energy dissipation structure is one popular aseismic structure for passive seismic control. In the study,building structure was considered as a mass-spring model,and a weak layer was installed to investigate the possibility of converging seismic energy damage on the weak layer. According to energy conservation,time-history analysis was employed to calculate the model’s seismic response and energy dissipation. Based on the result,the feasibility of controlling seismic energy dissipation is discussed. It is found that the metallic damper installed in the structure and the parameters of the weak layer affect the energy damage convergence.
Passive energy dissipation structure is one popular aseismic structure for passive seismic control. In the study,building structure was considered as a mass-spring model,and a weak layer was installed to investigate the possibility of converging seismic energy damage on the weak layer. According to energy conservation,time-history analysis was employed to calculate the model’s seismic response and energy dissipation. Based on the result,the feasibility of controlling seismic energy dissipation is discussed. It is found that the metallic damper installed in the structure and the parameters of the weak layer affect the energy damage convergence.
引文
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[4]严东方.浅谈消能减震结构[J].科技情报开发与经济,2006,16(8):165~167.Yan Dongfang.Talking about the Energy-dissipating and Shock-absorbing structure[J].Sci-Tech Information Development&Economy,2006,16(8):165~167.(in Chinese)
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[6]包世华.新编高层建筑结构[M].北京:中国水利水电出版社,2001.Bao Shihua.Newly edited tall building structures[M].Beijing:China Water Conservancy and Hydropower Press,2001.(in Chinese)
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[9]GB50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.GB50011-2001code for seismic design of building[S].Beijing:China Architecture and Building Press,2001.(in Chinese)
[10]Hasan R,Xu L,Grierson D E.Push-over analysis for performance-based seismic design[J].Computers and Structures,2002,80(31):2483~2493.
[11]日本建築構造技術者恊会編.応答制御構造設計法[M].東京:彰国社,2000.Technical Institute of Japanese Building Construction.Structural design method for response control[M].Tokyo:Syogunisya,2000.(in Japanese)
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