【作者】 许开成；

【导师】 张安哥；

【作者基本信息】 华东交通大学 ， 结构工程， 2008， 硕士

【摘要】 目前钢管混凝土的研究主要集中在构件和节点的受力特性方面,而对整体结构的研究工作还开展得较少。现行《钢管混凝土结构技术规程》中高层钢管混凝土结构高宽比限值,都是参考钢筋混凝土结构或钢结构规程的取值,而没有专门针对钢管混凝土结构的高宽比限值。就此问题,作者对钢管混凝土框架结构高宽比限值问题进行了研究和分析。本文主要进行了如下几方面的工作:1、建立框架结构高宽比限值的计算原理:从结构刚度、整体稳定、承载能力和经济合理等方面综合考虑,找出钢管混凝土框架结构高宽比限值确定的依据;2、高宽比限值的理论计算:设计出一系列不同高宽比的钢管混凝土框架,根据钢管混凝土结构统一理论,从变形、整体稳定和经济合理等方面对不同高宽比的框架进行理论计算,得出高宽比限值的建议值;3、高宽比限值的数值分析:以ABAQUS为平台,将理论计算的对象进行数值分析,并将数值分析的结果与理论分析的结果比较,最终得出钢管混凝土框架结构高宽比的限值的建议值,为工程设计提供参考数据。更多还原

【Abstract】 Nowadays studies on concrete-filled steel tube mainly focuses more on the characteristics of the force acting on components and the node, less on the work of the overall structure. In present "Technical specification for concrete-filled steel tubular structure," the height-to-width ratio limits of concrete-filled steel tubular high-level structure are drawn indirectly with reference to reinforced concrete structure or steel structure, not specifically acquired from themselves. In this regard, the thesis conducts a research on height-to-width ratio of the concrete-filled steel tubular framed structure as follows:1, Establishment of calculation principle of height-to-width ratio of framed structure: work out the factors determining the limits of height-to-width ratio of framed structure based on a comprehensive consideration of the aspects like the structural stiffness, the overall stability,the carrying capacity and economy.2,Theoretical calculation of height-to-width ratio: design a series of concrete-filled steel tubular framed structures of different height-to-width ratio, and by applying the unified theory derive the suggestion value of height-to-width ratio from such aspects as deformation, the overall stability and economy;3, Numerical analysis of height-to-width ratio: with ABAQUS working as the platform, conduct the numerical analysis of the theoretical calculation object, and finally obtain the suggestion value of height-to-width ratio of concrete-filled steel tubular framed structure after making a comparison between the numerical analysis result and the theoretical analysis result.更多还原