- 摘 要
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(清華大學(xué)建筑設(shè)計研究院，北京 100084)
［提要］某鋼筋混凝土高層框架核心筒結(jié)構(gòu)角部沿豎向設(shè)置了跨越3層的內(nèi)凹陽臺，使得局部樓層平面不能形成封閉的外框架邊梁，由此對結(jié)構(gòu)的整體側(cè)向剛度造成了一定的削弱。采取對比的方法，分別分析了不設(shè)置跨層內(nèi)凹陽臺以及設(shè)置跨越不同層數(shù)的內(nèi)凹陽臺對結(jié)構(gòu)整體側(cè)向剛度的影響。分析結(jié)果表明，工程的跨層內(nèi)凹陽臺并非明顯的結(jié)構(gòu)薄弱部位，對結(jié)構(gòu)的整體側(cè)向剛度影響很小，約為3%～4%，實際結(jié)構(gòu)具有良好的整體側(cè)向剛度。同時對《高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程》的相關(guān)條文進行了討論。
［關(guān)鍵詞］側(cè)向剛度；框架梁；框架核心筒結(jié)構(gòu)；鋼筋混凝土結(jié)構(gòu)；高層建筑
Analysis on Framecorewall Structure Without Some Corner Beams/He Xiaogang (Architectural Design & Research Institute, Tsinghua University, Beijing 100084,China)
Abstract:A design project of a concrete framecorewall tall building is presented. Due to the required inner balconies with 3storyheight at the two opposite corners on some floors, the related edge beams cannot be connected to the two corner columns which are in a diagonal line. The layout affects the lateral stiffness of the structure. The behavior of the structure is compared with the ordinary framecorewall structure which has continuous exterior frame beams; and comparison of behaviors of similar structures, in which inner balconies are with different story heights, is carried out. It is concluded that the lacking of some corner beams of the introduced structure has little influence on its overall behavior. The influence is only about 3%～4%, and the seismic behavior of the structure is quite well. The related section of the Technical Specification for Concrete Structures of Tall Building of China is also discussed.
Keywords:lateral stiffness; frame beam; framecorewall structure; reinforced concrete structures; tall buildings
