复杂高层结构体系二道防线的探讨
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摘要
为保证框架-核心筒结构体系多道抗震防线之概念设计,各国规范对内外筒剪力分配都有定量要求。然而这种要求的本质是即使结构构件部分有损伤,整体结构也能够保证共同作用且能够有效地进行内力重分布,并满足预定的结构抗震性能目标,特别对复杂和新型结构体系,这种设计概念更加重要。以超限高层巨型框架核心筒结构体系为例,通过性能化抗震设计方法,论证了巨型框架-核心筒结构在大震作用下内外筒协调工作,内外筒剪力能够重新分布,并满足预设之抗震性能目标。
For frame-core wall system,the seismic shear force distribution among the frame and core wall is supposed to meet quantitative requirements in Chinese and foreign seimic codes to ensure the enough load capacity and stiffness of the frames.The purpose of these requirements is to achieve the internal force redistribution among frames and core wall after the stiffness degradation of shear walls under seismic effects,then the target performance level can be satisfied.This concept is important,especially for structurally new and complicated systems.A design example of a mega frame-core wall structural system is demonstrated to validate that the target performance level can be reached by the interaction and the internal force redistribution among the frames and core wall under the largest earthquake shaking.
For frame-core wall system,the seismic shear force distribution among the frame and core wall is supposed to meet quantitative requirements in Chinese and foreign seimic codes to ensure the enough load capacity and stiffness of the frames.The purpose of these requirements is to achieve the internal force redistribution among frames and core wall after the stiffness degradation of shear walls under seismic effects,then the target performance level can be satisfied.This concept is important,especially for structurally new and complicated systems.A design example of a mega frame-core wall structural system is demonstrated to validate that the target performance level can be reached by the interaction and the internal force redistribution among the frames and core wall under the largest earthquake shaking.
引文
[1]JGJ3—2002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,2002.
[2]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[3]2000 International Building Code[S].InternationalCode Council.IBC-2000.第41卷增刊曹倩,等.复杂高层结构体系二道防线的探讨335
[4]1997 Uniform building code[S].In-ternationalConference of Building Officials.UBC-1997.
[5]Applied Technology Council.ATC-3-06 Amendedtentative provisions for the development of seismicregulations for buildings[S].
[6]钱稼茹等.钢框架-混凝土核心筒结构框架地震设计剪力标准值研究[J].建筑结构2008,38(3):1-5.
[7]国家标准建筑抗震设计规范管理组.建筑抗震设计规范(GB50011—2010)统一培训教材[M].北京:地震出版社,2010.
[2]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[3]2000 International Building Code[S].InternationalCode Council.IBC-2000.第41卷增刊曹倩,等.复杂高层结构体系二道防线的探讨335
[4]1997 Uniform building code[S].In-ternationalConference of Building Officials.UBC-1997.
[5]Applied Technology Council.ATC-3-06 Amendedtentative provisions for the development of seismicregulations for buildings[S].
[6]钱稼茹等.钢框架-混凝土核心筒结构框架地震设计剪力标准值研究[J].建筑结构2008,38(3):1-5.
[7]国家标准建筑抗震设计规范管理组.建筑抗震设计规范(GB50011—2010)统一培训教材[M].北京:地震出版社,2010.
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