前滩某超高层塔楼结构设计  

Structural Design of Super-High Residential Shear Wall Structure

作　　者：周正久 顾绍义[1] 李杰 徐圣佳 吴挺奋 ZHOU Zhengju;GU Shaoyi;LI Jie;XU Shengjia;WU Tingfen(Shanghai Institute of Architecture Design&Research Limited Company,200041,Shanghai,PRC;Shanghai Pudong Exploration(Group)Co.Ltd.,200120,Shanghai,PRC)

机构地区：[1]上海建筑设计研究院有限公司,上海200041 [2]上海浦东开发(集团)有限公司,上海200120

出　　处：《江西科学》2023年第3期528-535,共8页Jiangxi Science

摘　　要：前滩某超高层办公塔楼,屋面高度153.45m,主屋面以上设置约15.4m高的钢结构塔冠。塔楼采用钢管混凝土框架-钢筋混凝土核心筒结构体系。采用2种不同力学模型的分析软件进行多遇地震下的整体分析,验证小震下结构体系及布置的合理性。通过弹性动力时程分析,进一步验证了采用CQC法设计的合理性。针对不规则超限项均采取了针对性的加强措施,对关键构件设定性能目标,并进行了相应的抗震性能设计。对斜柱和与其相连的框架梁进行了拉弯及压弯承载力分析。对穿层柱进行专项分析,确保穿层柱受力的合理储备。对平面大悬挑区域进行专项舒适度分析,确保正常使用条件下的舒适性。对高区较高的悬臂钢结构塔冠立柱关键节点进行有限元分析,确保复杂节点受力可靠及传力路径合理。采用弹塑性动力时程分析对结构在罕遇地震下的动力特性及损伤退化开展进行了进一步研究。A high-rise office tower in Qiantan,roof height is 153.45 m,and the Steel Tower Crown is about 15.4 m above the main roof.The tower adopts concrete-flled Steel Tubular frame-rein-forced concrete core tube structure system.Two kinds of analysis software of different mechanical models are used to analyze the whole structure under frequent earthquake,and the rationality of structure system and arrangement under small earthquake is verified.Through the elastic dynamic time-history analysis,the rationality of the design with CQC method is further verified.Aiming at the irregular out-of-gauge items,the strengthening measures are adopted,and the performance targets of the key components are set and the corresponding seismic performance design is carried out.The load-carrying capacity of inclined column and Frame Beam connected with it is analyzed.Special analysis is carried out to ensure the reasonable force reserve of the through-layer column.The comfort degree of plane large cantilever area is analyzed to ensure the comfort under normal use conditions.The finite element analysis of the key joints of Cantilever Steel Tower Crown Column in high area is carried out to ensure the reliability of the complex joints and the rationality of the force transmission path.The elastoplastic dynamic time-history analysis is used to study the dynamic characteristics and damage degradation of structures under rare earthquakes.

关 键 词：超高层 塔楼 舒适度分析 节点有限元分析 弹塑性动力时程分析 

分 类 号：TU318[建筑科学—结构工程]