(1 中国建筑设计研究院， 北京 100044； 2 北京建筑大学土木与交通工程学院， 北京 100044；3 中国石化集团北京设计院， 北京100011)

［摘要］针对框架-核心筒结构联肢剪力墙的特点，提出根据相邻左、右墙肢变形确定连梁变形的计算方法。分别对高度为180m和300m的框架-核心筒结构进行在多遇地震和罕遇地震作用下的弹塑性动力时程分析，考察连梁在整体结构中的变形情况。在多遇地震作用下，连梁刚度较大，左、右墙肢在倾覆力矩作用下的拉、压变形较大，大部分连梁的变形角明显小于结构的层间位移角。结构加强层对附近楼层变形具有明显的抑制作用，连梁变形很小。在罕遇地震作用下，连梁刚度退化显著，左、右墙肢在倾覆力矩作用下的拉、压变形减小，大部分连梁的变形角大于结构的层间位移角。在不同地震波作用下连梁的变形差异显著，在罕遇地震作用下的最大变形角可达1/40。在进行结构抗震设计时，应保证连梁具有足够的塑性变形能力。

［关键词］框架-核心筒； 连梁； 弹塑性时程分析； 变形

中图分类号：TU394文献标识码：A文章编号：1002-848X(2017)09-0001-08

Study on deformation characteristics of coupling beams in frame-core structures

Fan Zhong1, Wang Haibo1,2, Liu Yunbo3, Zhu Dan1, Pei Yuchen1,2, Liu Xuelin1， Wang Yihua1

(1 China Architecture Design & Research Group, Beijing 100044， China; 2 School of Civil Engineering and Transportation， Beijing University of Civil Engineering and Architecture， Beijing 100044， China; 3 Beijing Design Institute of SINOPEC, Beijing 100011， China)

Abstract:According to the characteristics of pier shear walls in frame-core structures, an evaluation method for the deformation of the coupling beams was proposed based on displacements of the adjacent wall segments. The elasto-plastic dynamic time-history analyses of the frame-core structures with the height of 180m and 300m were carried out in the case of frequent earthquakes and rare earthquakes, and the deformation of the coupling beams in the whole structure was investigated. Because the stiffness of coupling beams is relatively larger during frequent earthquake loading, the tension and compression deformations in the both wall segments are obvious caused by overturning moments, and the deformation rotations of the most coupling beams are smaller than the inter-story drift ratio of the building structure. Outrigger trusses have strong constrain effect on the adjacent region of the structure, and the deformation of the coupling beams nearby is quite small. Under rare earthquake actions, the stiffness degradation of coupling beams is significant, and the tension and compression deformations in the both wall segments are reduced under overturning moments, and the deformation rotations of the most coupling beams are larger than the inter-story drift ratio of the building structure. The magnitude of deformation response for the coupling beams during the different seismic waves is quite different, the maximum deformation rotation of them can reach 1/40 under rare earthquake actions. So, in earthquake resistant design of the frame-core structures, sufficient plastic deformation capacity should be ensured for the coupling beams.

Keywords:frame-core structure; coupling beam; elasto-plastic time history analysis; deformation

作者简介：范重，博士，教授级高级工程师，Email: fanz@cadg.cn。