倾斜框架柱对框架-核心筒结构受力性能影响的初步分析  

Preliminary Analysis of Effects of Sloping Columns on Structural Behaviors of Frame-core Tube Structures

作　　者：袁世聪 蒋欢军[1,2] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092 [2]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《结构工程师》2014年第1期20-25,共6页Structural Engineers

基　　金：国家科技支撑计划课题(2012BAJ13B02)

摘　　要：利用结构分析软件ETABS和规范反应谱对一个采用竖直框架柱的钢筋混凝土框架-核心筒结构计算模型和两个在底部10层含有不同倾角的倾斜框架柱的框架-核心筒结构进行常遇地震作用下的弹性地震反应分析,研究倾斜外框架柱对框架与核心筒受力和变形的影响。研究表明,倾斜外框架柱使核心筒墙肢和框架柱的受力发生改变,会减小结构的层间位移,增大框架承担楼层水平剪力和倾覆弯矩的比重。The effects of sloping columns on the structural behavior of the frame-core tube structure were stud- ied by the elastic spectrum seismic response analysis under the frequent earthquakes. ARC frame-core tube structure with normal vertical frame column and another two RC frame-core tube structures with sloping col- umns in different sloping angels were modeled by using the structural analysis software Etabs. The analysis re- sults indicate that sloping columns change the internal forces of frame columns and core walls, decrease the in- ter-story drift, and increase the ratio of the shear force and overturning moment suffered by the frame to that of the total floor.

关 键 词：框架-核心筒结构 斜柱 层间位移 剪力 

分 类 号：TU973.2[建筑科学—结构工程]