新型材料加固震损RC框架的动力弹塑性分析

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。

Elasto-plastic dynamic analysis for pre-destroyed RC frame strengthened with new concrete material

In the reinforced concrete strengthening works,enlarging section method is recognized as an effective method.However,the research in this regard nowadays is confined to the component level,the research for structural level is still in suspense.Finite element program OpenSees was adopted to simulate a single span two story RC frame,with the fiber section,the elasto-plastic dynamic analysis for pre-destroyed and strengthening RC frame were completed to study the seismic characteristics and seismic performances of the structure strengthened with new type self-compacting concrete material.The simulated results were compared with test results,and the feasibility of the method was validated.