超高层建筑核心筒超前施工结构性能分析与设计*
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(1 绿地控股集团有限公司，上海 200023；2 同济大学建筑工程系，上海 200092；3 同济大学建筑设计研究院(集团)有限公司，上海 200092)[摘要] 近年来钢-混凝土混合结构体系在我国超高层建筑中得到广泛应用。框架-核心筒体系的施工流程需要核心筒超前外框架施工。考虑到施工期间结构体系、材料特性和荷载作用的时变性，需要引入施工阶段基于性能的结构设计（PBSD）方法分析与控制处于不同施工阶段的结构状态，解决超高层建筑施工过程分析与控制的问题。本文提出了核心筒超前外框架施工层数的合理分析方法，并在建立的500m基准超高层建筑模型上进行了验证。研究结果表明，基于性能目标对施工阶段核心筒超前施工进行分析是可行有效的，核心筒超前施工是施工阶段需要控制和评估的重要参数。[关键词] 超高层建筑;基于性能的结构设计;框架-核心筒结构;超前施工中图分类号:TU974 文献标识码：A 文章编号：1002-848X(2013)S1-0985-06*上海市科技攻关计划资助（编号：09dz1207704）;上海市青年科技启明星计划（跟踪）资助（编号：11QH1402700）。通讯作者：方朔，Email:610640057@qq.com。Performance Analysis and Design of Built in Advance Tube of Super Tall BuildingZhu Chuanhai1, Fang Shuo2, Zhao Xin3, Ding Kun4(1 Greenland Group Co., Ltd., Shanghai 200023, China；2 Department of Building Engineering, Tongji University, Shanghai 200092, China; 3 Tongji Architectural Design (Group) Co., Ltd., Shanghai 210096, China)Abstract : Nowadays the hybrid structural system of steel and concrete is widely applied in super tall buildings. Construction process in construction stage of the frame -tube structure brings about tube stories built in advance. Allowed for time-variant performance of structural system, material property and loading in the construction stage, performance based structural design (PBSD) should be introduced to evaluate and control different structural states of different construction stages to solve problems of evaluation and control. A method to evaluate built in advance tube stories is proposed and a benchmark super tall building of 500m is established to illustrate the application of the proposed new method. The results show that the proposed performance objective based method is feasible and effective. Built in advance of tube needs special consideration and control in construction stage.Keywords : super tall building;performance based structural design (PBSD);frame-tube structure;build in advance
