文档介绍：河北工程大学
硕士学位论文
基于Pushover分析的V型偏心支撑钢框架抗震性能研究
姓名:陈林
申请学位级别:硕士
专业:结构工程
指导教师:谭燕秋
2011-04
摘要
摘要
偏心支撑具有弹性阶段刚度接近中心支撑框架,弹塑性阶段的延性和耗能能力
接近于纯框架的特点,是一种良好的抗震结构。本文对该结构体系的弹塑性进行分
析研究,并且应用静力非线性 Pushover 分析方法,对一栋 6 层 V 型偏心支撑钢框
架结构体系进行分析;本文主要研究内容包括:
(1) 分析研究钢框架结构体系以及静力非线性 Pushover 分析方法在国内外的
发展状况。
(2) 在有关文献研究的基础上,论述了 V 型偏心支撑钢框架的设计原理。
(3) 静力非线性 Pushover 分析方法的理论研究。
(4) 利用 SAP2000 有限元软件建立 V 型偏心支撑钢框架的空间计算模型,并
对其进行了静力非线性 Pushover 分析,研究结构在不同地震力作用下的变形能力
和破坏机理,根据分析结果评定该体系在不同地震力作用下的抗震性能,最后对
比分析耗能粱段对结构抗震性能的影响。
关键词:静力非线性 Pushover;V 型偏心支撑钢框架;塑性铰;耗能梁段
Ⅰ
Abstract
Abstract
The elasticity phase stiffness of the V style eccentric braced steel frame is approach
to the centre braced steel frame,in the plasticity phase the transformation and the ability
of consume earthquake energy is approach to frame structure. Its elastic-plastic
character is analyzed and a model which has six stories has been discussed in this paper
with the nonlinear static Pushover analysis. The main study contents of thin paper are
followed:
(1)The paper analyzed and studied the general situation of the steel-frame system
and the method of nonlinear Pushover analysis.
(2)Based on the previous study, this paper has discussed the design theory for the
V style eccentric bracing steel.
(3)The theory of the analysis method of nonlinear Pushover has been studied in
the paper.
(4)Using the SAP2000 to set up a V style eccentric bracing steel frame model,
which has been analyzed by the method of Pushover, at the same time, it has studied the
ability of distortion the demolish mechanism of the model under the different
earthquake, from the result the paper has assessed the capability of the structure under
the different earthquake, at last, the based distance has been studied which can effect the
capability of the structure.
Keywords: nonlinear static Pushover analysis; V style eccentric bracing steel frame;
plastic hinge; link beam