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范  重¹，李  波²，范學(xué)偉¹
(1 中國建筑設(shè)計(jì)研究院，北京100044；2 北京交通大學(xué)土木建筑工程學(xué)院，北京100044)

[摘要] 連梁是超高層建筑剪力墻受力的關(guān)鍵部位，采用合理的配筋形式是提高小跨高比連梁性能的主要途徑之一，本文采用數(shù)值方法對(duì)不同配筋形式小跨高比連梁的受力性能進(jìn)行了重點(diǎn)分析。分析結(jié)果表明，交叉斜筋、綜合配筋與交叉暗撐均可不同程度的提高連梁的剛度和抗剪承載力，綜合配筋連梁鋼筋應(yīng)力和連梁裂縫分布均勻，而交叉斜筋和交叉暗撐連梁鋼筋應(yīng)力和裂縫分布則較為集中。
[關(guān)鍵詞] 超高層建筑；短連梁；有效配筋；數(shù)值分析

Research on Effective Reinforcement Arrangement of Coupling Beam with Small Aspect Ratio in Shear Walls of Super-tall building
Fan Zhong¹, Li Bo², Fan Xuewei¹
(1 China Architecture Design and Research Group, Beijing 100044, China; 2 School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China)

Abstract: Coupling beam is the critical parts in shear wall, and effective reinforcement arrangement is one of the methods to improve the behaviors of coupling beams with small aspect ratio in shear wall of super-tall building. In the presented paper, numerical research is camed out to investigate the behaviors of coupling beams with different reinforcement arrangements i.e.,scheme with bidiagonal bar, scheme with composite cross bar and scheme with bidiagonal concealed column. Numerical analysis results show that the stiffness and shear force resisting capacity of coupling beam is improved due to new reinforcement arrangements.  Distributions of crack in concrete and stress in bar of coupling beam with composite cross bar are homogeneous, but those of coupling beam with other reinforcements arrangement are concentrated.
Keywords: super-tall building; coupling beam with small aspect ratio; effective reinforcement arrangement; numerical analysis