国产TJ-Ⅰ型屈曲约束支撑的性能研究
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摘要
结合国内外研究和工程现状,以世博会场馆工程为背景,采用国产低屈服点钢(LYP160MPa),Q195,特制低屈服点钢材(LYP225MPa)作为芯材,研制出新型TJ-Ⅰ型屈曲约束支撑。经过一系列试验研究和理论分析,确定了合理的构造和设计准则,研制出更大吨位的并能实际应用于世博会场馆的支撑。在同济大学建筑结构实验室进行了一系列的低周往复加载试验中,本文选取了10根试件的试验结果,设计屈服吨位分别为40kN、90kN、120kN、130kN1、60kN、180kN。通过对试验结果和现象的总结和理论分析,我们可以清晰地看到支撑性能的稳步提高。试验结果表明,TJ-I型屈曲约束支撑具有良好的滞回性能和低周疲劳性能,与国外同类产品的性能相当,是一种十分有效的耗能构件。此次试验采用了宝山钢铁厂生产的国产低屈服点钢,促进了低屈服点钢在抗震工程领域中的应用。
Combined with the research and projects status at home and abroad,based on the Exquisite museum project,the newly-developed Domestic TJ-Ⅰ Buckling-Restrained Braces(TJI BRB),adopted domestic low yield point steel(LYP160MPa),Q195,specially made low yield point steel(LYP225MPa) as the core material,were presented in this paper.By a series of experimental research and theoretical analysis,we refined the existing conformations constantly,and ascertained the reasonable design procedure,which facilitated the application of the TJI BRB with greater yielding force that will be implemented in exquisite museum.Ten specimens,whose yielding forces are 400kN,900kN,1200kN,1300kN,1600kN,1800kN separately,are selected from the low cyclic loadings tests carried out in the building structure laboratory in Tongji university.By the summary of the test phenomenon and theoretical analysis,we can observe the steady improvement of the property of the specimens clearly.The TJI BRB,as the eventual experiment results indicated,illustrated steady hysteretic properties and outstanding fatigue characters,which are competitive to the parallel oversea products and is deemed as an effective damping device.By the adoption of the domestic low yield point steel,the research result can promote the application of the low yield point steel in aseismic engineering.
Combined with the research and projects status at home and abroad,based on the Exquisite museum project,the newly-developed Domestic TJ-Ⅰ Buckling-Restrained Braces(TJI BRB),adopted domestic low yield point steel(LYP160MPa),Q195,specially made low yield point steel(LYP225MPa) as the core material,were presented in this paper.By a series of experimental research and theoretical analysis,we refined the existing conformations constantly,and ascertained the reasonable design procedure,which facilitated the application of the TJI BRB with greater yielding force that will be implemented in exquisite museum.Ten specimens,whose yielding forces are 400kN,900kN,1200kN,1300kN,1600kN,1800kN separately,are selected from the low cyclic loadings tests carried out in the building structure laboratory in Tongji university.By the summary of the test phenomenon and theoretical analysis,we can observe the steady improvement of the property of the specimens clearly.The TJI BRB,as the eventual experiment results indicated,illustrated steady hysteretic properties and outstanding fatigue characters,which are competitive to the parallel oversea products and is deemed as an effective damping device.By the adoption of the domestic low yield point steel,the research result can promote the application of the low yield point steel in aseismic engineering.
引文
[1]GB50011-2001,建筑抗震设计规范[S].
[2]李国强,胡宝林,孙飞飞.国产TJI型屈曲约束支撑的研制与试验研究[A].第十一届高层建筑抗震技术交流会论文集[C].高层建筑抗震专业委员会,2007.523-540.
[3]汪家铭,中岛正爱.屈曲约束支撑体系的应用与研究进展I[J].建筑钢结构进展,2005,7(1):1-12.
[4]JGJ101-96,建筑抗震试验方法规程[S].
[5]AISC Seismic Provisions[C].2005:204-250.
[6]李国强,胡宝琳.屈曲约束支撑曲线滞回模型和刚度方程的建立[J].地震工程与工程振动,2007,27(2):26-31.
[2]李国强,胡宝林,孙飞飞.国产TJI型屈曲约束支撑的研制与试验研究[A].第十一届高层建筑抗震技术交流会论文集[C].高层建筑抗震专业委员会,2007.523-540.
[3]汪家铭,中岛正爱.屈曲约束支撑体系的应用与研究进展I[J].建筑钢结构进展,2005,7(1):1-12.
[4]JGJ101-96,建筑抗震试验方法规程[S].
[5]AISC Seismic Provisions[C].2005:204-250.
[6]李国强,胡宝琳.屈曲约束支撑曲线滞回模型和刚度方程的建立[J].地震工程与工程振动,2007,27(2):26-31.
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