| 方钢管再生混凝土柱偏压性能影响因素分析 |
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| 引用本文： | 陈宗平,谭秋虹,徐金俊.方钢管再生混凝土柱偏压性能影响因素分析[J].解放军理工大学学报,2015(2):149-155. |
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| 作者姓名： | 陈宗平 谭秋虹 徐金俊 |
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| 作者单位： | 1. 广西大学 土木建筑工程学院，广西 南宁 530004； 2. 广西大学 工程防灾与结构安全教育部重点实验室，广西 南宁 530004,1. 广西大学 土木建筑工程学院，广西 南宁 530004； 2. 广西大学 工程防灾与结构安全教育部重点实验室，广西 南宁 530004,1. 广西大学 土木建筑工程学院，广西 南宁 530004； 2. 广西大学 工程防灾与结构安全教育部重点实验室，广西 南宁 530004 |
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| 基金项目： | 国家自然科学基金资助项目(50908057,21568004);广西自然科学基金资助项目(2012GXNSFAA053203,2013GXNSFDA019025);
广西科技攻关资助项目(桂科攻12118023G3) |
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| 摘 要： | 为了研究方钢管再生混凝土柱在偏心荷载作用下的性能退化规律,以再生粗骨料取代率、长细比和偏心距为变化参数,设计了15个试件进行静力单调加载试验,在此基础上分析了其延性、耗能、刚度退化的演化过程。研究结果表明,方钢管再生混凝土柱的承载能力比方钢管普通混凝土柱的差,其极限承载力均随长细比和偏心距的增大而减小;轴心受压时,其耗能能力随取代率的增加呈先降后升的趋势,且随长细比的增加而降低;偏心受压时,其耗能能力随取代率的增加而降低,但随长细比的增加而提高;所有试件的耗能能力随偏心距的增大而提高,且延性系数随取代率的增加而降低;试件的弹性刚度随取代率的增加总体表现为先增后减的趋势,但均随长细比和偏心距的增加而降低。
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| 关 键 词： | 方钢管再生混凝土 取代率 耗能 延性 刚度 |
| 收稿时间： | 6/3/2014 12:00:00 AM |
Parameter analysis and performance on RACFSST columns under eccentric compression |
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| CHEN Zongping,TAN Qiuhong and XU Jinjun.Parameter analysis and performance on RACFSST columns under eccentric compression[J].Journal of PLA University of Science and Technology(Natural Science Edition),2015(2):149-155. |
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| Authors: | CHEN Zongping TAN Qiuhong and XU Jinjun |
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| Institution: | 1. College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; 2.Key Lab of Disaster
Prevention and Structural Safety of Chinese Ministry of Education, Guangxi University, Nanning 530004, China,1. College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; 2.Key Lab of Disaster
Prevention and Structural Safety of Chinese Ministry of Education, Guangxi University, Nanning 530004, China and 1. College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China; 2.Key Lab of Disaster
Prevention and Structural Safety of Chinese Ministry of Education, Guangxi University, Nanning 530004, China |
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| Abstract: | To study the performance degradation rule of recycled aggregate concrete filled square steel tube (RACFSST) columns under eccentric compression loading, 15 specimens with different replacement ratio of recycled coarse aggregate, slenderness ratio and eccentricity were tested under the monotonic static loading. On this basis, the evolutionary process of ductility, energy consumption and stiffness degeneration were analyzed. The results show that the bearing capacity of RACFSST columns is lower than that of square steel tube concrete columns,and that its ultimate bearing capacity decreases with the increase of slenderness ratio and eccentricity. The energy consumption of axial compression specimens goes up after dropping along with the increase of replacement ratio and decreases with the increase of slenderness ratio, while the energy consumption of eccentric loading specimens reduces with the increase of replacement ratio and increases with the rise of slenderness ratio. The energy consumption capacity of specimens increases with the rise of eccentricity, and the ductility indexes of specimens decrease with the increase of replacement ratio. Elastic stiffness drops after going up along with the increase of replacement ratio and decreases along with slenderness ratio and eccentricity rise. |
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| Keywords: | RACFSST replacement ratio energy consumption ductility stiffness |
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