钢筋混凝土巨型框架结构节点中延性性能分析

发布时间：2018-05-25 08:42

本文选题：节点 + 巨型框架结构　；参考：《吉林建筑大学》2015年硕士论文

【摘要】：随着我国建筑结构的飞速发展,巨型框架结构建筑体系已经成为关注的焦点,但是我国对巨型结构体系的研究还是非常的少,因此对于发展和完善巨型框架结构体系的设计理念还是具有十分重要的价值。通过介绍巨型框架结构体系在国内外的应用以及发展概况,钢筋混凝土结构主要是靠延性来抵抗地震作用下的非弹性变形,本文着重分析了钢筋混凝土巨型框架结构的延性的重要性极其作用、影响结构延性的主要因素。在上述基础上,采用ABAQUS有限元分析软件对巨型框架结构的梁柱节点模型试件进行模拟分析,得出软件模拟的结果可以做为理论继续研究作重要依据,并作为对混凝土巨型框架结构设计有益的参考资料。通过软件模拟分析得出:在整个钢筋混凝土巨型框架梁柱节点的构件中,巨柱的竖向轴力和巨梁梁端的竖向往复荷载的作用下得出相应的应力云图,根据应力云图分析节点中巨型梁端受力最大位置,随即通过改变影响节点梁端延性的主要因素,如梁的刚度:在改变钢筋的配筋率、混凝土强度等级,分别根据ABAQUS后处理得出的滞回曲线,观察滞回曲线的变化并且做分析比较,最后通过滞回曲线计算出等效阻尼比,进而得出其结构的延性分析。通过本文的研究,可以为钢筋混凝土巨型框架结构延性的设计提供参考价值。
[Abstract]:With the rapid development of the building structure in our country, the mega-frame structure building system has become the focus of attention, but the study of the mega-structure system in our country is still very few. Therefore, it is of great value to develop and perfect the design concept of mega-frame structure system. By introducing the application and development of mega-frame structure system at home and abroad, reinforced concrete structures mainly rely on ductility to resist inelastic deformation under earthquake. In this paper, the importance of the ductility of reinforced concrete mega-frame structures and the main factors affecting the ductility of the structures are analyzed. On the basis of the above, the ABAQUS finite element analysis software is used to simulate and analyze the Liang Zhu node model specimen of the mega-frame structure, and the result of the software simulation can be used as an important basis for further theoretical research. And as a useful reference for the design of concrete mega-frame structure. Through the software simulation analysis, it is concluded that the corresponding stress cloud diagram is obtained under the action of the vertical axial force of the giant column and the vertical reciprocating load at the end of the giant beam in the whole Liang Zhu joint of the reinforced concrete mega-frame. According to the stress cloud diagram, the position of the maximum force at the end of the giant beam in the joint is analyzed, and then the main factors affecting the ductility of the joint beam are changed, such as the stiffness of the beam, the reinforcement ratio of the steel bar, the grade of concrete strength, According to the hysteretic curves obtained by ABAQUS, the changes of hysteretic curves are observed and compared. Finally, the equivalent damping ratio is calculated by the hysteretic curves, and the ductility analysis of the structures is obtained. The research in this paper can provide reference value for the ductility design of reinforced concrete mega-frame structure.
【学位授予单位】：吉林建筑大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU375.4

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