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(奧雅納工程顧問, 廣州 510620)
[摘要]廣州東塔采用帶伸臂桁架的巨型框架-核心筒體系,為滿足建筑功能和抗震性能的要求,核心筒外墻采用了強度等級高達C80的內(nèi)嵌雙層鋼板混凝土組合剪力墻。鋼板混凝土組合剪力墻極限承載力高,延性好,耗能能力強,抗震性能優(yōu)異,在超高層建筑結(jié)構(gòu)中應(yīng)用前景廣闊。著重介紹內(nèi)嵌雙層鋼板混凝土組合剪力墻的設(shè)計考慮和施工要點,包括承載力計算、構(gòu)造措施、典型連接節(jié)點、鋼板分段與吊裝、裂縫控制等。計算結(jié)果表明,各項指標能滿足建筑功能需求和結(jié)構(gòu)抗側(cè)剛度、承載力的要求。
[關(guān)鍵詞]內(nèi)嵌雙層鋼板混凝土組合剪力墻; C80混凝土; 抗震性能; 裂縫控制
中圖分類號:TU973文獻標識碼:A文章編號:1002-848X(2017)14-0074-06
Structural design and construction of composite high strength concrete shear wall with embedded double steel plates in Guangzhou East Tower
Hou Shengli, Liu Yongce, Zhao Hong
(Arup, Guangzhou 510620, China)
Abstract:Guangzhou East Tower adopts mega frame-corewall with outriggers as its main structural system. To satisfy the architectural and seismic design requirements, the external wall of corewall adopts composite C80 high-strength concrete shear wall with embedded double steel plates. The composite shear wall with embedded double steel plates features high ultimate bearing capacity, significant ductility, good energy dissipation ability and good seismic behavior. It has a great prospect of application in super-tall building structures. The design considerations and key points of construction of composite concrete shear wall with embedded double steel plates were emphatically introduced, including calculation of bearing capacity, construction measures, typical joint connections, steel plate segmentation and hoisting, crack control, etc.. The calculation results show that all the indices can meet the requirement of architectural function and the requirements of the lateral stiffness and bearing capacity of the structure.
Keywords:composite concrete shear wall embedded with double steel plates; C80 concrete; seismic behavior; crack control
作者簡介:侯勝利,碩士,副總工程師,一級注冊結(jié)構(gòu)工程師,Email:sheng-li.hou@arup.com。