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（1 哈爾濱工業(yè)大學建筑設計研究院，哈爾濱 150090； 2 蘭州大學土木工程與力學學院，蘭州 730000）

［摘要］鋼管約束鋼筋混凝土短柱具有優(yōu)越的延性和彈塑性層間變形能力，因此在轉換柱中應用時可顯著提高轉換結構的整體抗震性能。對大連中國石油大廈外筒的鋼管約束鋼筋混凝土轉換短柱進行了抗震性能模型試驗，模型比例為1∶6。試驗中的主要參數(shù)為軸壓比、剪跨比和對拉鋼筋設置。試驗結果表明，鋼管約束混凝土短柱中，鋼管對核心混凝土的有效約束限制了核心混凝土剪切破壞的產(chǎn)生，改變了鋼筋混凝土短柱在水平地震作用下的剪切脆性破壞模式。在抗震工程中采用鋼管約束鋼筋混凝土柱可有效提高鋼筋混凝土框架短柱的延性、彈塑性層間變形能力和耗能性能，從而顯著提高結構的整體抗震性能。

［關鍵詞］鋼管約束鋼筋混凝土；短柱；抗震性能；軸壓比；剪跨比

中圖分類號：TU528文獻標識碼：A文章編號：1002-848X(2011)06-0091\|03

Experimental study on seismic behavior of tubed RC transition short columns

Zhang Xiaodong¹, Ma Zhongji¹, Liu Jingyun¹, Liu Zhiwei¹, Zhou Xuhong², Liu Jiepeng^{1, 2}(1 Architectural Design and Research Institute, Harbin Institute of Technology, Harbin 150090, China; 2 School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China)

Abstract:Tubed RC short columns exhibited excellent ductility and interstory plastic deformation capacity, therefore the anti-seismic performance of transition structures will be improved obviously when the transition short columns are in the form of tubed RC columns. Model test was carried out to study the seismic behavior of  tubed RC transition short columns used in the outer tube of Dalian China Petrol Mansion building. The scale of the model was 1∶6. The main parameters studied in this research were axial load ratio, shear span to depth ratio and using of stiffening bars. The test results indicate that the effectively confinement from the outer tube to the core concrete restrains the shear failure of RC short columns and  transforms the brittle shear failure mode of RC short columns under lateral seismic load. Using tubed RC columns in anti-seismic structures will effectively improve the ductility, interstory plastic deformation capacity and energy dissipation capacity of RC short columns, thereby effectively improve the anti-seismic performance of the whole structures.

Keywords:tubed RC; short column; anti-seismic performance; axial load ratio; shear span to depth ratio

*國家自然科學基金(50708027)，黑龍江省自然科學基金(E2007\|24)。

作者簡介：張小冬，碩士，教授，一級注冊結構工程師，Email: 163zhangxiaodong@163.com。

參考文獻

［1］  ZHOU XUHONG，  LIU JIEPENG.Seismic behavior and shear strength of tubed RC short columns［J］. Journal of Constructional Steel Research, 2010, 66(3): 385\|397.

［2］  GB50010—2002混凝土結構設計規(guī)范［S］. 北京：中國建筑工業(yè)出版社，2002.

［3］  Load and resistance factor design［S］. Chicago: American Institute of Steel Construction, 1994.

［4］  ACI318—99 Building code requirements for structural concrete and commentary［S］. Farmington Hills: American Concrete Institute, 1999.

［5］  Eurocode 4 Design of composite steel and concrete structures, part 1.1, general rules and rules for buildings［S］. Brussels: European Committee for Standardization, 1996.