平面凹凸不规则高层结构弱连接楼盖设计与加强措施研究  

Study on design and strengthening measures of weakly connected diaphragm of high-rise structure with concave convex irregular plane

作　　者：刘臣 唐熙 周斌 LIU Chen;TANG Xi;ZHOU Bin(Shenzhen General Institute of Architectural Design and Research Co.,Ltd.,Shenzhen 518031,China)

机构地区：[1]深圳市建筑设计研究总院有限公司,深圳518031

出　　处：《建筑结构》2024年第23期1-12,共12页Building Structure

摘　　要：由中心区和若干个外伸单肢通过弱连接楼盖连接组成的平面凹凸不规则高层结构,因单肢抗侧能力不足导致单肢与中心区的弱连接部位受力复杂。如何进行截面内力的计算成为弱连接楼盖设计的关键。单肢与中心区的水平力传递除依靠楼板外,连接部位的剪力墙和边梁也发挥重要作用。在现有研究的基础上,结合工程实践对不同的弱连接楼盖截面内力计算方法进行了比较;分析了结构高度、连接部位结构布置、单肢端截面宽度等因素对弱连接楼盖受力的影响;同时利用弹性时程分析和多尺度有限元分析对弱连接楼盖的受力机制及损伤特点进行研究,基于分析结果和工程经验,从结构布置原则、计算方法和构造等方面总结了弱连接楼盖的针对性加强措施。For the high-rise structure with concave convex irregular plane composed of a central area and several extended wings connected by the weakly connected diaphragm,the weak connection between the wings and central area was subjected to complex forces due to the weakly structural rigidity of the wings.How to calculate the internal forces of the sections is the key to the design of weakly connected diaphragm.Except the slabs,shear walls and edge beams also had played important roles in the transmission of horizontal force between the wings and central area.Based on the existing research and combined with engineering practice,different calculation methods for the section internal force of the weakly connected diaphragm were compared.The impact of structure height,partial layout and width of connecting slab on the stress of weakly connected diaphragm was analyzed.Simultaneously,the force mechanism and damage characteristics of the weakly connected diaphragm were studied by using elastic time history analysis and multi-scale finite element analysis.Based on analysis results and engineering experience,the targeted strengthening measures for weakly connected diaphragm were summarized from the aspects of layout principles,calculation method and construction.

关 键 词：弱连接楼盖 平面凹凸不规则 剪力分配 有限元分析 抗震性能化设计 加强措施 

分 类 号：TU375[建筑科学—结构工程]