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在混凝土结构加固工程中,加大截面法被公认为是一种较为可靠的加固方法。但现今对于加大截面法加固理论的研究,大多局限于构件层面,对于结构整体层面的分析涉及很少。本文应用OpenSees有限元分析软件,采用纤维单元,对一单跨二层RC框架结构,分别进行预震损及震损加固的动力弹塑性分析,研究新型自密实混凝土材料加固RC框架结构的自身动力特性及动力响应,并与振动台模型试验结果进行对比,验证分析方法的可行性。
In the concrete structure reinforcement project, increasing the section method is recognized as a more reliable reinforcement method. However, most of the researches on the reinforcement theory of cross-section method are mostly confined to the component level, which involves very little analysis on the overall level of the structure. In this paper, OpenSees finite element analysis software is used to analyze the dynamic elasto-plasticity of a single-span two-story RC frame structure with pre-earthquake damage and earthquake damage reinforcement by using fiber elements. The dynamic behavior of the RC frame structure strengthened by the new self-compacting concrete material is studied. Characteristics and dynamic response, and compared with shaker model test results to verify the feasibility of analytical methods.