矩形钢管混凝土框架结构受力性能试验研究
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摘要
为了研究矩形钢管混凝土梁在框架结构中的受力性能,并进一步分析全矩形钢管混凝土框架结构的抗震性能,对竖向荷载和低周反复水平荷载作用下的两榀单跨两层矩形钢管混凝土框架模型进行了抗震性能试验研究。以柱含钢率为变化参数,研究分析了矩形钢管混凝土框架结构的破坏机制、滞回特征、延性、强度及刚度退化等性能。结果表明:与钢筋混凝土、钢结构框架相比较,矩形钢管混凝土框架结构具有承载力高、耗能能力强、强度退化不明显、延性性能好等优点。由此可以推断:矩形钢管混凝土框架结构在承载力、抗震性能以及材料利用等方面有较多的优越性,有进一步研究和推广应用的价值。
In order to investigate the mechanical behavior of concrete filled RHS (rectangular hollow section) beams and the seismic behavior of concrete filled RHS frames, two one-bay, two-story concrete-filled RHS frame specimens are tested under static vertical loads and low cycle horizontal loads. Taking the steel ratio of column cross-section as the main experimental parameter, hysteretic behavior, ductility, degradation of strength and stiffness are examined and analyzed. The result indicates that the concrete-filled RHS frames have advantages such as higher bearing capacity, excellent energy dissipation capacity and ductility behavior, and inconspicuous strength degradation compared with the reinforced concrete frame and the steel frame. Therefore, it is concluded that the concrete-filled RHS frame has wonderful superiority on bearing capacity, seismic behavior and effective use of material; it deserves further research and wide application.
In order to investigate the mechanical behavior of concrete filled RHS (rectangular hollow section) beams and the seismic behavior of concrete filled RHS frames, two one-bay, two-story concrete-filled RHS frame specimens are tested under static vertical loads and low cycle horizontal loads. Taking the steel ratio of column cross-section as the main experimental parameter, hysteretic behavior, ductility, degradation of strength and stiffness are examined and analyzed. The result indicates that the concrete-filled RHS frames have advantages such as higher bearing capacity, excellent energy dissipation capacity and ductility behavior, and inconspicuous strength degradation compared with the reinforced concrete frame and the steel frame. Therefore, it is concluded that the concrete-filled RHS frame has wonderful superiority on bearing capacity, seismic behavior and effective use of material; it deserves further research and wide application.
引文
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[3]Matsui C.Strength and behavior of frames with concrete filled square steel tubular columns under earthquake loading[C].Proceedings of1st International Specialty Conference on CFST,Harbin,1985:143―146.
[4]Kawaguchi J,Morino S,Sugimoto T.Elastic-plastic behavior of concrete-filled steel tubular frames[C].Proceedings of the Engineering Foundation Conference on Steel and Concrete CompositionⅢ.ASCE,New York,USA,1997:272―281.
[5]沈之容,蒋涛.矩形钢管混凝土结构的经济性分析[J].特种结构,2001(4):1―4.Shen Zhirong,Jiang Tao.The economic analysis on concrete-filled rectangular steel tube structure[J].The Special Structure,2001(4):1―4.(in Chinese)
[6]王晶.矩形钢管混凝土受弯性能研究[D].包头:内蒙古科技大学,2006.Wang Jing.The flexural behavior research on concrete-filled rectangular steel tube structure[D].Baotou:Inner Mongolia University of Science and Technology,2006.(in Chinese)
[7]CECS:159:2004,《矩形钢管混凝土结构技术规程》[S].北京:中国计划出版社,2004.CECS159:2004,Technical specification for structures with concrete-filled rectangular steel tube member[S].Beijing:China Planning Press,2004.(in Chinese)
[8]JGJ101-96,建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.JGJ101-96,Specificating of testing methods for earthquake resistant building[S].Beijing:China Architecture Industry Press,1997.(in Chinese)
[9]石启印,张科强,白国良.低周反复荷载下两跨三层钢-砼组合框架受力性能的试验研究[J].陕西工学院学报,1996,12(3):50―57.Shi Qiyin,Zhang Keqiang,Bai Guoliang.The experimental study of mechanical behavior on two-span,three stories steel-concrete combined framework[J].The Journal of Engineering College in Shaanxi,1996,12(3):50―57.(in Chinese)
[10]孙犁,李凤霞.半刚性连接钢框架抗震性能的模型试验研究[J].世界地震工程,2005,21(4):143―147.Sun Li,Li Fengxia.The model experimental study of seismic behavior on semi-rigid connection steel frame[J].World Earthquake Engineering,2005,21(4):143―147.(in Chinese)
[11]贾连光,许峰,张绍武.轻型钢框架结构的抗震性能试验研究[J].工业建筑,2005,35(10):64―68.Jia Lianguang,Xu Feng,Zhang Shaowu.The experimental research of seismic behavior on lightweight steel frame[J].Industrial Construction,2005,35(10):64―68.(in Chinese)
[12]邹翾,周德源.3层钢筋混凝土框架结构反复加载试验分析[J].四川科学技术研究,2005,21(2):7―11.Zou Xuan,Zhou Deyuan.The experimental analysis of cyclic loading on three stories reinforced concrete frame structure[J].The Science and Technology Research in Sichuan,2005,21(2):7―11.(in Chinese)
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