型钢混凝土柱受力性能及设计方法研究

发布时间：2018-05-10 10:18

本文选题：型钢混凝土结构 + 轴压比　；参考：《哈尔滨工程大学》2014年硕士论文

【摘要】：型钢混凝土结构是在混凝土中配置实腹式或空腹式型钢,并配有箍筋和纵筋的结构,简称SRC结构,SRC结构使得混凝土的抗压性能和钢材的抗拉性能都能得到很好的发挥,能有效的解决混凝土的抗拉性能不足问题,由于混凝土受压能代替部分钢材承受压力,从而能够节省钢材达到良好的经济效益。由于型钢混凝土结构具有很多优点,优于一般的混凝土结构和钢结构,近些年来越来越受到世界各国的重视。型钢混凝土结构越来越被广泛地应用于大跨结构、高层建筑结构和高耸结构中,尤其是抗震区的建筑结构中。本文首先对型钢混凝土结构的特点和在国内外研究发展情况做简要介绍,然后对型钢混凝土柱轴压比限值进行研究,分析了钢筋混凝土柱与型钢混凝土柱轴压比之间的关系,以大、小偏心界限破坏平衡条件为基础,推导型钢混凝土柱的轴压比限值公式。对型钢混凝土柱正截面和斜截面承载力进行研究,并对国内外相关规范的计算方法对比和总结。其次,对偏心受压型钢混凝土柱的二阶效应进行分析,研究其对SRC柱承载力的影响,并对SRC柱的偏心距增大系数进行理论分析,总结国内外相关学者在这一方面的研究成果。并运用有限元分析软件ANSYS对两组不同轴压比和不同配箍率的型钢混凝土柱在低周反复荷载作用下进行有限元分析。最后通过数值模拟的结果得到在不同轴压比和不同配箍率情况下,型钢混凝土柱的滞回曲线和骨架曲线,从而分析轴压比和配箍率对型钢混凝土柱受力性能的影响。
[Abstract]:Steel reinforced concrete (SRC) structure is a kind of solid or hollow type steel structure in concrete, which is equipped with stirrups and longitudinal bars. It is called SRC structure, which makes the compressive performance of concrete and the tensile performance of steel can be well played. It can effectively solve the problem of insufficient tensile performance of concrete. Because concrete can replace some steel under pressure, it can save steel to achieve good economic benefits. Because steel reinforced concrete structure has many advantages, it is better than common concrete structure and steel structure, so it has been paid more and more attention in the world in recent years. Steel reinforced concrete (SRC) structures are more and more widely used in long-span structures, high-rise building structures and high-rise structures, especially in seismic areas. In this paper, the characteristics of steel reinforced concrete structure and its research and development at home and abroad are briefly introduced, then the limit value of axial compression ratio of steel reinforced concrete column is studied, and the relationship between reinforced concrete column and steel reinforced concrete column axial compression ratio is analyzed. Based on the failure equilibrium condition of large and small eccentricity limits, the limit formula of axial compression ratio of steel reinforced concrete columns is derived. The bearing capacity of normal section and inclined section of steel reinforced concrete column is studied, and the calculation methods of relevant codes at home and abroad are compared and summarized. Secondly, the second order effect of eccentrically compressed steel reinforced concrete columns is analyzed, and the influence on the bearing capacity of SRC columns is studied. The increasing coefficient of eccentricity of SRC columns is theoretically analyzed, and the research results of domestic and foreign scholars in this field are summarized. Two groups of SRC columns with different axial compression ratio and different hoop ratio were analyzed by finite element analysis software ANSYS under low cyclic cyclic loading. Finally, the hysteretic curves and skeleton curves of SRC columns are obtained under different axial compression ratios and different hoop ratios, and the effects of axial compression ratio and hoop ratio on the mechanical properties of SRC columns are analyzed.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU398.9

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