钢管混凝土框架抗震性能的非线性有限元分析（可复制毕业论文）.pdf

华中科技大学
硕士学位论文
钢管混凝土框架抗震性能的非线性有限元分析
姓名:杨建兴
申请学位级别:硕士
专业:结构工程
指导教师:朱宏平;查晓雄
20051021
华中科技大学硕士学位论文
摘要
钢管混凝土结构由于其自身特殊的优点,使其在技术经济上优于其他结构,因
而国内外学者对钢管混凝土结构的力学性能和设计方法进行了大量的研究工作,到
目前为止,对钢管混凝土结构基本构件的抗震性能进行了大量的静力试验和低周反
复荷载试验及理论研究,而对结构在动荷载作用下的整体抗震性能的研究则很少,
特别是振动台试验和在真实的地震波作用下结构的反应。
时程分析法由于输入的是真实的地震波记录,能够比较真实地反应地震过程中
结构的动力性能,详细了解结构在整个地震过程中的动力响应,是目前较为精细的
分析方法。本文利用 LS-DYNA 大型有限元动力分析软件,采用时程分析方法和拟
静力试验的方法,对一榀单跨两层的钢管混凝土框架结构的整体抗震性能进行了三
维非线性有限元分析,比较了钢管混凝土框架结构和钢筋混凝土框架结构在地震波
作用下的加速度、位移、延性及滞回耗能等动力响应,综合评定了钢管混凝土框架
结构的抗震性能。最后,本文简单研究了含钢率、混凝土强度及钢材强度对钢管混
凝土框架结构的水平荷载-位移骨架曲线的影响情况。研究表明,钢管混凝土框架结
构的抗震性能优于钢筋混凝土框架结构,为今后深入研究钢管混凝土框架结构的抗
震性能提供了条件,同时为实际工程设计提供了参考依据。


关键词:钢管混凝土框架非线性有限元分析弹塑性地震反应分析
抗震性能

I
华中科技大学硕士学位论文
Abstract
The concrete-filled steel tubular structures is superior to other structures in technology
and economy because of its advantages, therefore the domestic and international scholars
have carried on many researches on mechanics performance and design methods of the
concrete-filled steel tubular structures. Nowadays, many works have been done about the
seismic behavior of CFST members in many countries by theoretical studies and pseudo
dynamic testing and quasi-static testing. However, the research on the working performance
of CFST frame has seldom been investigated, especially shaking table testing and response
of structure und actual earthquake wave.
The time-history seismic analysis can truly reflect the seismic behavior of structure
and find out the earthquake response when earthquake happens, so it is the precise
method at present. In this paper, author carries on three-dimensional finite element
analysis to the seismic behavior of concrete-filled steel tubular frames under actual
earthquake waves by LS-DYNA software. The questions such as acceleration,
displacement, hysteretic behavior, ductility and the ability of energy dissipation have been
emphatically studied about a one-lay-two-story CFST and reinfo