本文選題：鋼筋混凝土框架　切入點：靜力彈塑性分析　出處：《中南大學》2014年碩士論文　論文類型：學位論文

【摘要】：鋼筋銹蝕和混凝土碳化等耐久性損傷會導致混凝土結構抗震性能顯著下降,但目前的主要研究都集中在損傷對單個構件抗震性能的影響上,而對整個結構的研究比較少。本文結合國家自然科學基金項目“鋼筋混凝土結構抗震耐久性研究(51178470)”,通過有限元軟件ABAQUS分析研究耐久性損傷對鋼筋混凝土框架結構抗震性能的影響。論文主要工作如下： (1)對選取的試驗框架建立有限元分析模型,對其進行靜力彈塑性分析,并與試驗結果進行對比,驗證ABAQUS分析模型及模擬方法的可靠性與準確性 (2)對不同鋼筋銹蝕率的框架結構進行靜力彈塑性分析,分別得到了結構的荷載-位移曲線、層間位移角曲線,分析不同銹蝕率結構在小、中、大震下的抗震性能及其規(guī)律,并在此基礎上擬合了考慮銹蝕率影響的框架抗震承載力及層間位移角的折減公式。 (3)對不同碳化深度的框架結構進行靜力彈塑性分析,分別得到了結構的荷載-位移曲線、層間位移角曲線,分析不同碳化深度結構在小、中、大震下的抗震性能。 (4)對不同使用時間的框架結構進行靜力彈塑性分析,分別得到了結構的荷載-位移曲線、層間位移角曲線,分析不同使用時間下結構在小、中、大震下的抗震性能及其規(guī)律,并在此基礎上擬合了考慮隨時間變化的框架抗震承載力及層間位移角的折減公式。
[Abstract]:Durability damage such as corrosion of steel bar and carbonization of concrete will cause the seismic performance of concrete structure to decline significantly, but the main research at present is focused on the effect of damage on the seismic behavior of single member. However, the research on the whole structure is less. In this paper, combined with the project of National Natural Science Foundation "Research on Seismic durability of reinforced concrete structure (51178470)", the durability damage to reinforced concrete frame structure is studied by finite element software ABAQUS. The main work of this paper is as follows:. 1) the finite element analysis model of the selected test frame is established, and the static elastic-plastic analysis is carried out. The reliability and accuracy of the ABAQUS analysis model and the simulation method are verified by comparing with the test results. (2) the static elastic-plastic analysis of frame structures with different corrosion rates of steel bars is carried out, and the load-displacement curves and interstory displacement angle curves are obtained, respectively. The seismic behavior and regularity of structures with different corrosion rates under small, moderate and large earthquakes are analyzed. On this basis, the formula of seismic bearing capacity and interstory displacement angle of frame considering the effect of corrosion rate is fitted. 3) the static elastic-plastic analysis of frame structures with different carbonation depths is carried out, and the load-displacement curves and interstory displacement angle curves are obtained, respectively, and the seismic behavior of structures with different carbonation depths under small, moderate and large earthquakes is analyzed. 4) the static elastic-plastic analysis of frame structures with different service time is carried out, and the load-displacement curves and interstory displacement angle curves are obtained, respectively. The seismic behavior and regularity of the structures under small, moderate and large earthquakes are analyzed under different service times. On this basis, the formula of seismic bearing capacity and interstory displacement angle of frame considering time variation is fitted.
【學位授予單位】：中南大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TU375.4

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