- 摘 要
-
（北京清華同衡規(guī)劃設計研究院有限公司節(jié)材研究與結構優(yōu)化中心， 北京 100086）
［摘要］在框筒結構中，加強層樓板對結構的整體抗震性能影響顯著。以結構高度為248-2m典型框筒結構為例，采用ABAQUS軟件對加強層樓板進行彈塑性分析，得到了樓板裂縫擴展情況，并分析了樓板配筋率、框架受力狀況及樓板厚度對加強層剛度的影響。最后，通過彈塑性樓板模型與不同彈性樓板等效剛度折減系數(shù)的彈性樓板模型進行對比，給出了不同情況下結構整體分析時彈性樓板等效剛度折減系數(shù)的合理取值。
［關鍵詞］框筒結構； 加強層； 彈性樓板等效剛度折減系數(shù)
中圖分類號：TU971文獻標識碼：A文章編號：1002-848X(2018)01-0005-04
Research on the stiffness reduction factor of the floors at strengthened story in typical frame-tube structures
Wang Changxing, Fu Xuebao, Wang Dongfang, Chen Chuncai
(Materials Saving Research and Structural Optimization Center, Beijing Tsinghua Urban Planning and Design Institute, Beijing 100086, China)
Abstract:The floors at strengthened story are significant effect on the seismic performance in frame-tube structures. A typical 248-2 meters high frame-tube structure was taken as an example, the elastoplastic properties of the floors at strengthened story using ABAQUS were analyzed to get the development of cracks in the floors, and the influence of the reinforcement ratio of the floor, the frame force situation and the thickness of the floor on the stiffness of the strengthened story were analyzed. At last, the reasonable stiffness reduction factor of the elastic floors under different conditions were proposed through comparing the elastoplastic floor model with the elastic floor model using different stiffness reduction factor.
Keywords:frame-tube structure; strengthened story; equivalent stiffness reduction factor of the elastic floors
作者簡介：王昌興，本科，教授級高級工程師，Email：china-xing@126.com。
