填充墙对矩形钢管混凝土框架结构抗震性能的影响研究
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摘要
为了研究填充墙对钢管混凝土框架结构抗震性能和受力性能的影响规律,该文通过两榀单跨两层带填充墙的矩形钢管混凝土框架结构的低周反复荷载试验,研究分析了该类框架结构的承载能力、延性、耗能能力、破坏机理及其破坏特征。结果表明,填充墙的存在使框架的承载能力、抗侧刚度均大幅度增加,但其屈服位移和极限位移减小,延性降低。经比较研究发现,带填充墙的矩形钢管混凝土框架与同类其他框架相比具有良好的抗震性能和耗能能力。鉴于填充墙的存在对矩形钢管混凝土框架的受力性能和延性均有较大的影响,在钢管混凝土框架结构的工程实践中,应明确填充墙对结构受力的贡献,若考虑填充墙参与结构受力,则应在整体结构分析中给予考虑,否则填充墙宜与框架柱采取柔性连接,避免产生刚度效应。
To study the influence rules of filler walls on the aseismic behavior and mechanical behavior of concrete-filled rectangular steel tubular (CFRST) frames,the load-carrying capacity,ductility,energy dissipation capacity,failure mechanism and characteristics were researched,through the quasi-static tests of two bays,1-span 2-floor concrete-filled rectangular steel tubular frames with filler walls.The results indicate that the filler walls make the load-carrying capacity and lateral stiffness of the frames increase,the yield displacement and ultimate displacement decrease,and the ductility reduces.Compared with other frames,the concrete-filled rectangular steel tubular frames with filler walls have better aseismic performance and energy dissipation capacity.Owing to the more obvious effect of the filler walls on the mechanical behavior and ductility of this kind of frames,the contribution made by filler walls should be clear in the engineering practice of concrete-filled steel tubular structures.If the filler walls are considered to participate in bearing loads,it should be considered in structure analyses,otherwise the connection between the filler walls and frame columns should be flexible to avoid the stiffness effect.
To study the influence rules of filler walls on the aseismic behavior and mechanical behavior of concrete-filled rectangular steel tubular (CFRST) frames,the load-carrying capacity,ductility,energy dissipation capacity,failure mechanism and characteristics were researched,through the quasi-static tests of two bays,1-span 2-floor concrete-filled rectangular steel tubular frames with filler walls.The results indicate that the filler walls make the load-carrying capacity and lateral stiffness of the frames increase,the yield displacement and ultimate displacement decrease,and the ductility reduces.Compared with other frames,the concrete-filled rectangular steel tubular frames with filler walls have better aseismic performance and energy dissipation capacity.Owing to the more obvious effect of the filler walls on the mechanical behavior and ductility of this kind of frames,the contribution made by filler walls should be clear in the engineering practice of concrete-filled steel tubular structures.If the filler walls are considered to participate in bearing loads,it should be considered in structure analyses,otherwise the connection between the filler walls and frame columns should be flexible to avoid the stiffness effect.
引文
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[10]韩鑫.带填充墙矩形钢管混凝土框架结构性能研究[D].包头:内蒙古科技大学,2008.Han Xin.The behavior research of concrete-filled rectangular steel tube frame with filler wall[D].Baotou:Inner Mongolia University of Science and Technology,2008.(in Chinese)
[2]张雅君.填充墙对钢筋混凝土框架结构受力及变形性能的改善[J].工程建设与设计,2001(6):37―39.Zhang Yajun.Improve of the filler wall to the mechanicaland deformation performance of the reinforced concrete frame structure[J].Engineering Construction and Design,2001(6):37―39.(in Chinese)
[3]关国雄,夏敬谦.钢筋混凝土框架砖填充墙结构抗震性能的研究[J].地震工程与工程振动,1996,16(1):87―99.Guan Guoxiong,Xia Jingqian.The research on seismic behavior of reinforced concrete brick infilled walls’frame structure[J].Earthquake Engineering and Vibration,1996,16(1):87―99.(in Chinese)
[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]Zhang Yaochun,Xu Chao,Lu Xiaozhe.Experiment study of hysteretic behavior for concrete-filled square thin-walled steel tubular columns[J].Journal of Constructional Steel Research,2006(4):1―9.
[6]CECS154-2004,矩形钢管混凝土结构技术规程[S].北京:中国计划出版社,2004.CECS154-2004,Technical specification for structures with concrete-filled rectangular steel tube member[S].Beijing:China Planning Press,2004.(in Chinese)
[7]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)
[8]任利民.矩形钢管混凝土框架结构抗震性能研究[D].包头:内蒙古科技大学,2007.Ren Limin.Research on seismic behavior of concrete filled rectangular steel frame[D].Baotou:Inner Mongolia University of Science and Technology,2007.(in Chinese)
[9]李斌,任利民.矩形钢管混凝土框架结构试验研究[J].哈尔滨工业大学学报,2007,39(增刊):606―609.Li Bin,Ren Limin.The experimental research of concrete-filled rectangular steel tube frame structure[J].Journal of Harbin Institute of Technology,2007,39(supplement):606―609.(in Chinese)
[10]韩鑫.带填充墙矩形钢管混凝土框架结构性能研究[D].包头:内蒙古科技大学,2008.Han Xin.The behavior research of concrete-filled rectangular steel tube frame with filler wall[D].Baotou:Inner Mongolia University of Science and Technology,2008.(in Chinese)
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