带加强层框架-核心筒结构的静力弹塑性分析  

Nonlinear Static Analysis of Frame-Tube Structures with Strengthened Stories

作　　者：陈林之[1] 吕西林[1] 

机构地区：[1]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》2007年第4期18-23,共6页Structural Engineers

摘　　要：高层框架-核心筒结构为提高抗侧刚度、降低剪力滞后效应,常设置伸臂与外围圈梁构成水平加强层。以模拟框架考虑核心筒的弹塑性性能,运用空间有限元程序对某带加强层框架-核心筒结构进行了静力弹塑性分析,考察了结构的抗侧刚度变化、屈服机制、出铰顺序等,得到若干具有工程设计参考价值的结论。　Strengthened stories composed of outriggers and ring beams are often used in high-rise frame-tube structures in order to enhance structural lateral stiffness and weaken the shear lag effect.In this paper nonlinear static analysis of a frame-tube structure with strengthened stories is carried out by spatial finite element method,in which the nonlinear performance of the core tube is simulated by frame elements.The yield mechanism and sequence of plastic hinges as well as the change of structural lateral stiffness are investigated,and some useful results are obtained.

关 键 词：加强层 静力弹塑性 模拟框架 

分 类 号：TU973.1[建筑科学—结构工程]