泡沫铝填充钢管支撑滞回性能的试验研究
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摘要
对3榀中心支撑框架进行了滞回性能研究,其中2榀框架的支撑部分填充了泡沫铝材料,主要考察支撑填充泡沫铝后对框架整体滞回性能的影响。通过对试验所得的P-Δ滞回曲线和骨架曲线进行分析,表明:支撑部分填充泡沫铝后,框架整体承载能力提高,支撑的屈曲破坏滞后甚至不出现屈曲,滞回曲线饱满,没有发生明显的捏缩现象。本文研究的框架具有良好的滞回性能和耗能能力。
Three centrically braced frames filled with foamed aluminum subjected to reversed cyclic load are tested in the paper with the purpose of researching their hysteresis behavior.By analyzing the P-Δ curves and the framework curves gaining from the tests,we can conclude that the hysteresis curves are plump in shapes,and have no apparent pinch phenomenon.Also,the integral bearing capacity of the frames is rising.The results show that the centrically braced frames filled with foamed aluminum have better hysteresis behavior and more extraordinary dissipative capability.
Three centrically braced frames filled with foamed aluminum subjected to reversed cyclic load are tested in the paper with the purpose of researching their hysteresis behavior.By analyzing the P-Δ curves and the framework curves gaining from the tests,we can conclude that the hysteresis curves are plump in shapes,and have no apparent pinch phenomenon.Also,the integral bearing capacity of the frames is rising.The results show that the centrically braced frames filled with foamed aluminum have better hysteresis behavior and more extraordinary dissipative capability.
引文
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[6]连尉安,张耀春.钢支撑及框架-中心支撑双重抗侧力体系研究现状、不足及改进[J].地震工程与工程振动,2005,25(3):68
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[8]于英华,梁冰,等.多孔泡沫金属研究现状及分析[J].青岛建筑工程学院学报,2003,24(1):56~58
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[2]Maison B F.Cyclic response prediction for braced steelframes[J].Journal of Structural Division,1980,106:1416~1423
[3]Ikeda K.Phenomenological modeling of steel braces undercyclic loading[D].California:University of California,1984
[4]Boutros M K.Cyclic behavior of partly plastic pinnedcircular tubesⅡ:Testing and verification of the model[J].Thin-Walled Structures,1999,33:82~99
[5]Tsutomu U.Plastic analysis of steel members and framessubjected to cyclic loading[J].Engineering Structures,1997,22:135~145
[6]连尉安,张耀春.钢支撑及框架-中心支撑双重抗侧力体系研究现状、不足及改进[J].地震工程与工程振动,2005,25(3):68
[7]吴华英.钢支撑框架抗侧力性能试验研究及有限元分析[D].武汉:武汉理工大学,2004:9~23
[8]于英华,梁冰,等.多孔泡沫金属研究现状及分析[J].青岛建筑工程学院学报,2003,24(1):56~58
[9]JGJ101-2002,建筑抗震试验方法规程[S]
[10]邓长根.日本建筑结构耗能减震研究和应用的若干新进展[J].四川建筑科学研究,2003,29(2):85
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