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  本文選題：偏心距　切入點：肢長比　出處：《東北石油大學》2017年碩士論文　論文類型：學位論文

【摘要】：異形柱是指其截面為L形、T形、十字形等形式的柱體,該種形式的柱子能夠有效的避免室內(nèi)出現(xiàn)明顯的棱角、減輕結構的自重,并且使建筑內(nèi)部布局更加美觀。雖然異形柱有很多方面的優(yōu)點,但對鋼筋混凝土異形截面柱力學性能的研究還很匱乏。近年來,由于鋼筋混凝土異形柱結構體系的廣泛應用,對于鋼筋混凝土異形柱結構體系的探索與研究成為一項重要研究課題�；炷林褂眠^程中可能面臨施工后混凝土澆筑強度低,設計荷載與實際應用荷載不符合等情況。針對于鋼筋混凝土異形截面柱,采用合理的加固方式尤為必要,碳纖維布作為相對成熟的加固材料,對異形柱的加固具有重要意義。本文將基于ABAQUS有限元模型,對CFRP布加固混凝土異形截面柱的力學性能進行研究。本文的主要研究工作包括:1.對CFRP布加固鋼筋混凝土L形截面柱的相關理論公式進行補充和豐富。2.建立合理的CFRP布加固鋼筋混凝土異形截面柱有限元模型,根據(jù)已有的參考文獻對模型的正確性加以驗證,從而為后續(xù)的研究奠定基礎。3.拓展研究參數(shù),基于ABAQUS分析的結果,確定偏心距、CFRP布粘貼層數(shù)、肢長比,混凝土強度等級、肢長肢厚比五個因素對CFRP布加固鋼筋混凝土異形截面柱的影響規(guī)律。4.根據(jù)有限元分析結果,為工程實際應用以及后續(xù)學者的研究提供科學依據(jù)。
[Abstract]:Special-shaped columns refer to columns whose sections are L-shaped T-shaped, cross-shaped and so on. The columns of this form can effectively avoid the appearance of obvious edges in the interior and reduce the weight of the structure. Although special-shaped columns have many advantages, the study of mechanical properties of special-shaped reinforced concrete columns is still scarce. In recent years, due to the widespread application of reinforced concrete special-shaped columns, The exploration and study of reinforced concrete special-shaped column structure system has become an important research topic. The design load does not accord with the actual applied load. It is necessary to adopt a reasonable reinforcement method for reinforced concrete special-shaped cross-section columns, and carbon fiber sheet is used as a relatively mature reinforcement material. This paper is based on the ABAQUS finite element model. The mechanical properties of reinforced concrete special-section columns strengthened with CFRP sheets are studied. The main research work in this paper includes: 1. Supplement and enrich the relevant theoretical formulas of reinforced concrete L-section columns strengthened with CFRP sheets. Finite element model of reinforced concrete special-section columns strengthened with CFRP sheets, The correctness of the model is verified according to the existing references, thus laying a foundation for further research. 3. Based on the results of ABAQUS analysis, the number of layers attached to the eccentric ABAQUS cloth, the ratio of limb length to length, and the grade of concrete strength are determined. The effects of the ratio of limb length to limb thickness on the reinforcement of reinforced concrete special-section columns with CFRP sheets. 4. According to the results of finite element analysis, this paper provides a scientific basis for the practical application of engineering and the subsequent research by scholars.
【學位授予單位】：東北石油大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU375.3
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本文編號：1594190