钢筋混凝土十字形受压柱力学性能分析
发布时间：2019-05-28 01:24
【摘要】：随着人们物质生活的提高,对住宅的要求越来越高,住宅的舒适性和美观性得到结构设计人员和开发商的重视。因此异形柱结构以其独特的构造优势在工程中得到广泛的应用。目前,国内外对异形柱研究较多,本文在前人研究的基础上,对钢筋混凝土十字形柱的力学性能,进行了三维有限元数值模拟分析,主要研究内容如下:采用前人已做试验中的试件尺寸和材料力学指标,应用有限元分析软件ABAQUS,建立了钢筋混凝土十字形轴心受压柱有限元模型,进行数值模拟分析。分析结果与试验结果基本吻合,验证了模型的合理性。利用上述模型,针对钢筋混凝土十字形轴心受压柱的力学性能,进行了应力和变形分析。研究了混凝土强度等级、长细比、纵筋配筋率和体积配箍率等参数对其力学性能的影响。利用上述模型,进行了钢筋混凝土十字形偏心受压柱三维有限元数值模拟分析,给定了界限偏心距的判定条件;探讨了混凝土强度等级、纵筋配筋率和体积配箍率对界限偏心距的影响;分析了钢筋混凝土十字形柱在单向小偏心、单向大偏心、双向小偏心和双向大偏心等四种受压情况下混凝土强度等级、纵筋配筋率、体积配箍率和长细比等参数对其力学性能的影响。
[Abstract]:With the improvement of people's material life, the requirements for housing are getting higher and higher, and the comfort and aesthetics of housing have been paid attention to by structural designers and developers. Therefore, special-shaped column structure has been widely used in engineering because of its unique structural advantages. At present, there are many researches on special-shaped columns at home and abroad. On the basis of previous studies, the three-dimensional finite element numerical simulation analysis of the mechanical properties of reinforced concrete cross-shaped columns is carried out in this paper. The main research contents are as follows: based on the specimen size and material mechanics index, the finite element model of reinforced concrete cross axial compression column is established by using the finite element analysis software ABAQUS, and the numerical simulation analysis is carried out. The analysis results are in good agreement with the experimental results, and the rationality of the model is verified. Based on the above model, the stress and deformation of reinforced concrete cross axial compression columns are analyzed. The effects of strength grade, slenderness ratio, longitudinal reinforcement ratio and volume hoop ratio on the mechanical properties of concrete are studied. Based on the above model, the three-dimensional finite element numerical simulation analysis of reinforced concrete cross eccentric compression columns is carried out, and the conditions for judging the limit eccentricity are given. The effects of concrete strength grade, longitudinal reinforcement ratio and volume hoop ratio on the limit eccentricity are discussed. The concrete strength grade and longitudinal reinforcement ratio of reinforced concrete cross columns under four kinds of compression conditions, such as unidirectional small eccentricity, unidirectional large eccentricity, bidirectional small eccentricity and bidirectional large eccentricity, are analyzed. Effects of volume hoop ratio and slenderness ratio on its mechanical properties.
【学位授予单位】：湘潭大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU375
本文编号：2486603
[Abstract]:With the improvement of people's material life, the requirements for housing are getting higher and higher, and the comfort and aesthetics of housing have been paid attention to by structural designers and developers. Therefore, special-shaped column structure has been widely used in engineering because of its unique structural advantages. At present, there are many researches on special-shaped columns at home and abroad. On the basis of previous studies, the three-dimensional finite element numerical simulation analysis of the mechanical properties of reinforced concrete cross-shaped columns is carried out in this paper. The main research contents are as follows: based on the specimen size and material mechanics index, the finite element model of reinforced concrete cross axial compression column is established by using the finite element analysis software ABAQUS, and the numerical simulation analysis is carried out. The analysis results are in good agreement with the experimental results, and the rationality of the model is verified. Based on the above model, the stress and deformation of reinforced concrete cross axial compression columns are analyzed. The effects of strength grade, slenderness ratio, longitudinal reinforcement ratio and volume hoop ratio on the mechanical properties of concrete are studied. Based on the above model, the three-dimensional finite element numerical simulation analysis of reinforced concrete cross eccentric compression columns is carried out, and the conditions for judging the limit eccentricity are given. The effects of concrete strength grade, longitudinal reinforcement ratio and volume hoop ratio on the limit eccentricity are discussed. The concrete strength grade and longitudinal reinforcement ratio of reinforced concrete cross columns under four kinds of compression conditions, such as unidirectional small eccentricity, unidirectional large eccentricity, bidirectional small eccentricity and bidirectional large eccentricity, are analyzed. Effects of volume hoop ratio and slenderness ratio on its mechanical properties.
【学位授予单位】：湘潭大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU375
【参考文献】
相关期刊论文 前10条
1 李佩;刘忠;李科锋;陈叶;;钢筋混凝土轴心受压T形柱力学性能研究[J];工程建设与设计;2016年09期
2 陈叶;刘忠;李佩;杨龙刚;;L形混凝土偏心受压柱力学性能数值分析[J];水利与建筑工程学报;2016年03期
3 苏德利;曹菲;;十字形钢筋混凝土异形柱非线性全过程分析[J];沈阳建筑大学学报(自然科学版);2010年05期
4 郭棣,吴敏哲;L形柱构件试验中的问题分析[J];西安建筑科技大学学报(自然科学版);2003年02期
5 郭棣,吴敏哲,田炜;T形截面钢筋混凝土柱偏心受压分析[J];西安建筑科技大学学报(自然科学版);2001年02期
6 姚俊淦,江见鲸;异形柱双向偏心受压正截面承载力分析及程序设计[J];力学与实践;2001年02期
7 曹万林,庞国新,胡国振,周明杰,卢立炜;较小剪跨比带暗柱L形柱抗震性能试验研究[J];世界地震工程;2000年02期
8 胡国振,曹万林,周明杰,郝春森,曲英华;钢筋混凝土带暗柱L形柱抗震性能试验研究[J];世界地震工程;1999年04期
9 曹万林,胡国振,吴二军,周明杰;较小剪跨比带暗柱十字形柱抗震性能试验研究[J];地震工程与工程振动;1999年03期
10 曹万林,庞国新,吴二军,周明杰;钢筋混凝土带暗柱T形柱抗震性能试验研究[J];世界地震工程;1999年03期
相关博士学位论文 前1条
1 孙林柱;钢筋混凝土异形柱轴心受压性能的试验研究[D];天津大学;2007年
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