樓蓋體系對框架-核心筒結(jié)構(gòu)性能的影響分析
蘇云鵬,肖嘉,韓合軍
- 摘 要
-
蘇云鵬,肖嘉,韓合軍(中國電子工程設(shè)計院, 北京100840)[摘要]根據(jù)樓面梁端部的連接形式可將框架-核心筒結(jié)構(gòu)常采用的樓蓋體系分為三種:1)樓面梁與外框架和內(nèi)筒均為鉸接連接(鉸接樓蓋);2)樓面梁與外框架剛接連接但與內(nèi)筒鉸接連接(半剛接樓蓋);3)樓面梁與外框架和內(nèi)筒均為剛接連接(剛接樓蓋)。通過某高層混合結(jié)構(gòu)的具體算例詳細探討了三種樓蓋體系對結(jié)構(gòu)整體剛度的影響、對外框架與核心筒剪力墻之間內(nèi)力分配的影響以及對外框架內(nèi)力的影響,并提出了鉸接節(jié)點設(shè)計應(yīng)考慮樓面梁軸力的不利因素,最后總結(jié)了各種樓蓋體系的適用范圍。[關(guān)鍵詞]高層建筑; 樓蓋體系; 混合結(jié)構(gòu); 框架-核心筒; 結(jié)構(gòu)性能中圖分類號:TU318.2 文獻標識碼:A 文章編號:1002-848X(2013)08-0014-05Analysis on performance of frame-core wall structure with different floor systemsSu Yunpeng, Xiao Jia, Han Hejun(China Electronics Engineering Design Institute, Beijing 100840, China)Abstract: According to different connection forms of floor beam, the floor system, which is commonly used in frame-core wall structure, can be categorized into three groups: 1) floor beam hinged to both outer gimbal and inner tube; 2) floor beam hinged to inner tube but rigidly connected to outer gimbal; 3) floor beam rigidly connected to both outer gimbal and inner tube. For the three floor systems, the influence on structure stiffness, internal force distribution between outer gimbal and inner tube, and internal force of the frame was discussed by analysis of a high-rise hybrid structure. Axial force of floor beam should be considered for the first and the second kind of floor systems in design. Finally, the applicability of the three floor systems was summarized.Keywords: high-rise building; floor system; hybrid structure; frame-core wall structure; structure performance參考文獻[1]包世華,張銅生. 高層建筑結(jié)構(gòu)設(shè)計和計算[M]. 北京:清華大學(xué)出版社,2005.[2]傅學(xué)怡. 實用高層建筑結(jié)構(gòu)設(shè)計[M]. 2版. 北京:中國建筑工業(yè)出版社,2010.[3]聶建國,田淑明,矯金廣. 框架核心筒組合結(jié)構(gòu)體系在選型中的剛度規(guī)律[J]. 建筑科學(xué)與工程學(xué)報,2008,25(1):10-17.[4]程懋堃, 張燕平, 沈莉. 對框架核心筒結(jié)構(gòu)平面布置的理解和探討[J]. 建筑結(jié)構(gòu).技術(shù)通訊, 2007,37(9):5-6.[5]JGJ 3—2010 高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程[S]. 北京:中國建筑工業(yè)出版社,2011.