CCTV新台址主楼结构设计与思考
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摘要
CCTV主楼为倾斜双塔连体结构,位于8度抗震设防区,设计使用年限为100年,属特别复杂超限超高层连体建筑。主体结构采用刚度较大的支撑外筒结构体系。新颖的结构体型给结构设计及施工带来了很多新课题和难点。通过采用性能化的抗震设计方法以及理论分析与试验研究相结合,对结构关键技术如施工模拟、高含钢率SRC柱、罕遇地震下的弹塑性时程分析、新型节点构造的应用以及防连续倒塌等加以综合研究与分析,很好地解决了工程中遇到的技术难题。施工过程中的应力和变形监测结果也初步验证了结构设计方法的正确性和可靠性。CCTV主楼结构经历了艰辛的设计历程,其设计成果是对现有设计理念、设计方法的丰富和推进,同时也在设计理论、抗震性能化目标、现行规范运用、复杂形体建筑设计等方面引发了新的课题和思考。
The New CCTV Building consists of two leaning towers,which are linked together at the top via a cantilever link element.The building is located at 8 degree-earthquake fortification zone and its design working life is 100 years.Its structural design requirement exceeds the code limits.The main tower adopts external tube with braces,which can provide high stiffness.The novel and complicated structure system brings a lot of new challenges to structure design and construction.All the technical problems have been overcome finally by using performance-based seismic design,detailed construction sequence analysis,non-linear seismic response analysis,innovative type joint,high-ratio steel SRC column.The monitoring data of stress and deformation achieved during the construction procedure proves the validity and reliability of the design method.The design process of the New CCTV Building is tough,but it also pushes the development of existing design method and concept.Meanwhile,it encourages a lot new studies in design methodology,the application of existing standard and complex building design.
The New CCTV Building consists of two leaning towers,which are linked together at the top via a cantilever link element.The building is located at 8 degree-earthquake fortification zone and its design working life is 100 years.Its structural design requirement exceeds the code limits.The main tower adopts external tube with braces,which can provide high stiffness.The novel and complicated structure system brings a lot of new challenges to structure design and construction.All the technical problems have been overcome finally by using performance-based seismic design,detailed construction sequence analysis,non-linear seismic response analysis,innovative type joint,high-ratio steel SRC column.The monitoring data of stress and deformation achieved during the construction procedure proves the validity and reliability of the design method.The design process of the New CCTV Building is tough,but it also pushes the development of existing design method and concept.Meanwhile,it encourages a lot new studies in design methodology,the application of existing standard and complex building design.
引文
[1]华东建筑设计研究院有限公司.CCTV新台址工程结构设计、理论分析与试验研究系列课题报告[R].上海:华东建筑设计研究院有限公司,2007.(ECADI.Design,analysis and experimental study on CCTVNewHeadquarters[R].Shanghai:ECADI,2007.(in Chinese))
[2]奥纳工程顾问有限公司.中国中央电视台新台址CCTV主楼建筑结构超限设计可行性报告[R].香港:奥纳工程顾问有限公司,2003.(ARUP.Feasibility study on thestructural design exceeding the code limits of CCTV NewHeadquarters[R].Hong kong:ARUP,2003.(inChinese))
[3]GB 50011—2001建筑抗震设计规范[S].(GB50011—2001 Code for seismic design of building[S].(inChinese))
[4]中国建筑科学研究院.中央电视台新台址CCTV主楼结构模型模拟地震振动台试验研究[R].北京:中国建筑科学研究院,2005.(CABR.Experimental study on themodel test of shaking table for CCTV New Headquarters[R].Beijing:CABR,2005.(in Chinese))
[5]汪大绥,姜文伟,包联进等.CCTV新台址主楼施工模拟分析及应用研究[J].建筑结构学报,2008,29(3):104-110.(WANG Dasui,JIANG Wenwei,BAO Lianjin,et al.Staged construction analysis and application research onNew CCTV Building[J].Journal of Building Structures,2008,29(3):104-110.(in Chinese))
[6]陈以一,王海生,赵宪忠等.高含钢率SRC压弯柱滞回性能试验研究[J].建筑结构学报,2008,29(3):31-39.(CHEN Yiyi,WANG Haisheng,ZHAO Xianzhong,et al.Experimental study on hysteretic behavior of SRC columnswith high ratio of core steel[J].Journal of BuildingStructures,2008,29(3):31-39.(in Chinese))
[7]郭彦林,高巍,林冰,盛和太.CCTV新台址主楼外筒“米”形节点滞回性能的试验研究[J].建筑结构学报,2008,29(3):63-72.(GUO Yanlin,GAO Wei,LIN Bing,SHENG Hetai.Experimental investigation to the complexconnections in the external tube system of New CCTVBuilding[J].Journal of Building Structures,2008,29(3):63-72.(in Chinese))
[8]包联进,姜文伟,孙战金等.CCTV主楼外筒关键节点设计与构造[J].建筑结构学报,2008,29(3):82-87.(BAO Lianjin,JIANG Wenwei,SUN Zhanjin,et al.Detailed design of key joints of the external tube in NewCCTV Building[J].Journal of Building Structures,2008,29(3):82-87.(in Chinese))
[2]奥纳工程顾问有限公司.中国中央电视台新台址CCTV主楼建筑结构超限设计可行性报告[R].香港:奥纳工程顾问有限公司,2003.(ARUP.Feasibility study on thestructural design exceeding the code limits of CCTV NewHeadquarters[R].Hong kong:ARUP,2003.(inChinese))
[3]GB 50011—2001建筑抗震设计规范[S].(GB50011—2001 Code for seismic design of building[S].(inChinese))
[4]中国建筑科学研究院.中央电视台新台址CCTV主楼结构模型模拟地震振动台试验研究[R].北京:中国建筑科学研究院,2005.(CABR.Experimental study on themodel test of shaking table for CCTV New Headquarters[R].Beijing:CABR,2005.(in Chinese))
[5]汪大绥,姜文伟,包联进等.CCTV新台址主楼施工模拟分析及应用研究[J].建筑结构学报,2008,29(3):104-110.(WANG Dasui,JIANG Wenwei,BAO Lianjin,et al.Staged construction analysis and application research onNew CCTV Building[J].Journal of Building Structures,2008,29(3):104-110.(in Chinese))
[6]陈以一,王海生,赵宪忠等.高含钢率SRC压弯柱滞回性能试验研究[J].建筑结构学报,2008,29(3):31-39.(CHEN Yiyi,WANG Haisheng,ZHAO Xianzhong,et al.Experimental study on hysteretic behavior of SRC columnswith high ratio of core steel[J].Journal of BuildingStructures,2008,29(3):31-39.(in Chinese))
[7]郭彦林,高巍,林冰,盛和太.CCTV新台址主楼外筒“米”形节点滞回性能的试验研究[J].建筑结构学报,2008,29(3):63-72.(GUO Yanlin,GAO Wei,LIN Bing,SHENG Hetai.Experimental investigation to the complexconnections in the external tube system of New CCTVBuilding[J].Journal of Building Structures,2008,29(3):63-72.(in Chinese))
[8]包联进,姜文伟,孙战金等.CCTV主楼外筒关键节点设计与构造[J].建筑结构学报,2008,29(3):82-87.(BAO Lianjin,JIANG Wenwei,SUN Zhanjin,et al.Detailed design of key joints of the external tube in NewCCTV Building[J].Journal of Building Structures,2008,29(3):82-87.(in Chinese))
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