【作者】 王一贤；

【导师】 毛蓉萍；

【作者基本信息】 西南交通大学 ， 结构工程， 2011， 硕士

【摘要】 随着我国经济的发展,建筑工程迅速发展。以钢框架-混凝土核心筒为代表的混合结构在我国高层及超高层建筑中的应用越来越广泛。因为混合结构在降低结构自重,加快施工进度等方面有着明显的优势,良好的经济效益,因而有着广阔的应用前景。几十年来,国内外的各专家学者对其从理论分析、模型实验、数值计算等方面进行了研究,取得了众多成果。本文论述了混合结构在水平地震作用下的变形特点和受力规律,阐述了弹性动力时程分析方法的原理,介绍了求解地震作用的数值积分法Newmark-β法,对其他积分方法做了相应的简介,在有限元理论方面介绍了板壳单元的刚度矩阵,这些都将作为数值模拟计算的理论基础。本文进一步建立了有限元模型,采用振型分解反应谱法分析地震作用,研究作为混合结构主要抗侧力构件的混凝土核心筒及其刚度变化对整个结构地震响应的影响。研究内容为：通过改变混凝土核心筒的厚度、混凝土弹性模量以及核心筒厚度随高度增加而减小,得到混合结构层间位移、层间位移角变化规律,以及倾覆力矩和剪力在框架和核心筒之间的分配变化规律。通过分析,可以看出混凝土核心筒厚度的变化对结构位移和内力有着明显的影响。针对结构内力在核心筒厚度变化处有较大波动的这一情况,采用弹性时程分析法作为补充计算,得出与振型分解反应谱法较为一致的结果；还采用唐山波、EL-CENTRO波和TARZANA波对基本模型进行分析,得到结构在不同地震波作用下的地震响应。更多还原

【Abstract】 With the growth of chinese economy, civil engineering expand rapidly,mixed structure, mainly steel frame-RC core wall, are applied to tall buildings and super-tall buildings more and more widely in our country. Because they have significant advantages in reducing the structure weight, speeding up the progress of construction, saving investment. In recent years, experts and scholars have done much research work in theoretical analysis, model experiments, and numerical calculation, in our contry and foreign contey, getting many achievement.In this paper, features of deformation and internal force of stell frame-RC core wall under level force, elastic dynamic time history method and, Newmark-B method which is the numerical integration method for earthquake are introduced, other integration methods have been briefly described. The shell element stiffness matrix is introduced in this paper. These will serve as the theoretical basis for numerical calculation.In his paper, RC core wall which is the main member of resisting level force and stiffness of RC core wall will be analysising. Floor displacement, angle between floors, distributions of moment and shear force between steel frame and RC core wall, are researched by changing the thickness, modulus, andlayout of RC core wall. We can draw a conclusion that the thickness of RC-core wall have obvious influence on structure.In this paper, the elastic time history analysis method are used while internal force changes greater at the section of core wall changes, consistent results obtained with the response spectrum method, in addition, analysizing of the basic model A with Tangshan seismic wave, El-centro seismic wave,Tarzana eismic wave, resulting in different seismic response of the structure under different seismic waves.更多还原