范  重¹，李  波²，范学伟¹
(1 中国建筑设计研究院，北京100044；2 北京交通大学土木建筑工程学院，北京100044)

[摘要] 连梁是超高层建筑剪力墙受力的关键部位，采用合理的配筋形式是提高小跨高比连梁性能的主要途径之一，本文采用数值方法对不同配筋形式小跨高比连梁的受力性能进行了重点分析。分析结果表明，交叉斜筋、综合配筋与交叉暗撑均可不同程度的提高连梁的刚度和抗剪承载力，综合配筋连梁钢筋应力和连梁裂缝分布均匀，而交叉斜筋和交叉暗撑连梁钢筋应力和裂缝分布则较为集中。
[关键词] 超高层建筑；短连梁；有效配筋；数值分析

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