框架-混凝土核心筒混合结构位移限值的探讨
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摘要
框架-混凝土核心筒混合结构在我国已得到广泛应用,但对其水平位移限值的研究尚不完善,还存在诸多问题。通过理论分析和有限元计算,讨论了高宽比对结构变形的影响,明确了高宽比与位移限值间的相关性。通过四个算例的位移特性和安全性的比较,认为相对层间位移角和顶点位移角可以作为层间位移角的有效补充,而且当外围框架类型不同时,宜视位移指标不同给出相应的位移限值。
Frame-concrete corewall hybrid structure is widely used in China,but research on horizontal drift limit is not fully addressed.Based on theoretical analysis and finite element analysis,influence of height-width ratio on structural deformation was discussed and the relationship between height-width ratio and drift limit was illustrated.Furthermore,drift and safety of four frame-concrete corewall hybrid structures were compared.As a result,relative inter-story drift and roof drift can act as effective supplements of inter-story total drift,and drift limit should be determined according to different drift index for structures with different peri-frame type.
Frame-concrete corewall hybrid structure is widely used in China,but research on horizontal drift limit is not fully addressed.Based on theoretical analysis and finite element analysis,influence of height-width ratio on structural deformation was discussed and the relationship between height-width ratio and drift limit was illustrated.Furthermore,drift and safety of four frame-concrete corewall hybrid structures were compared.As a result,relative inter-story drift and roof drift can act as effective supplements of inter-story total drift,and drift limit should be determined according to different drift index for structures with different peri-frame type.
引文
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[3]张令心,郭丰雨.钢-混凝土混合结构抗震研究评述[J].地震工程与工程振动,2004,24(3):51-56.
[4]程绍革.钢-混凝土筒混合结构弹塑性反应分析及探讨[J].建筑结构,1998,28(6):33-35.
[5]吕西林,李俊兰.钢筋混凝土核心筒体抗震性能试验研究[J].地震工程与工程振动,2002,22(3):42-50.
[6]李俊兰,吕西林.钢筋混凝土核心筒体抗震性能分析[J].地震工程与工程振动,2003,23(5):102-108.
[7]傅学怡.实用高层建筑结构设计[M].北京:中国建筑工业出版社,1999.
[8]田淑明.框架-混凝土核心筒混合结构的刚度与抗震性能研究[D].北京:清华大学,2008.
[9]SMITH STAFFORD B,SALIM IRAWAN.Parameterstudy of outrigger-braced tall building structures[J].Journal of Structure Engineering,1981,107(ST10):2001-2014.
[10]聂建国,田淑明.大震下高层型钢混凝土结构弹塑性分析[J].清华大学学报:自然科学版,2007,47(6):772-776.
[11]CARLOS E VENTURA,DING YUMING.Linear andnonlinear seismic response of a 52-storey steel framebuilding[J].The Structural Design of Tall Buildings,2000,9(1):25-45.
[12]蒋利学.用广义剪切变形参数分析超高层混凝土结构的层间变形[J].建筑结构,2001,31(1):7-10.
[13]LI KANGNING.Canny for 3D nonlinear static anddynamic structural analysis[M].Singapore NationalUniversity of Singapore Press,2006.
[14]刘大海,杨翠如,钟锡根.高层建筑抗震设计[M].北京:中国建筑工业出版社,1993.
[15]郭子雄,吕西林,王亚勇.建筑结构抗震变形验算中层间弹性位移角限值的研讨[J].工程抗震,1998(2):1-6.
[16]郭子雄,吕西林,王亚勇.建筑结构在罕遇地震下弹塑性变形验算的讨论[J].工程抗震,1999(1):13-18.
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[18]HASELTON CURT B.Assessing seismic collapse safetyof modern reinforced concrete moment frame buildings[D].Stanford:Stanford University,2006.
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