国标Q235钢屈曲约束支撑低周疲劳试验研究
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摘要
屈曲约束支撑是一种利用金属屈服滞回耗能的装置,具有性能稳定、制作方便、成本低廉等优点。通过对国标Q235钢屈曲约束支撑进行低周疲劳试验,评估其累积滞回性能,分析影响其失效模式的因素,并与国外同类型屈曲约束支撑进行对比。试验结果表明:屈曲约束支撑滞回曲线饱满,累积塑性变形远大于AISC规程的建议值;支撑屈服段内的焊缝对低周疲劳性能的影响显著,试验表明大应变幅值下焊缝影响被削弱;核心板的多波屈曲是导致屈曲约束支撑的低周疲劳性能小于核心板材的低周疲劳性能的主要原因;与同期在国外开展的屈曲约束支撑低周疲劳性能试验相比,在相同加载幅值下,国标Q235钢屈曲约束支撑表现出与SM400A钢屈曲约束支撑相当的性能,国产普通钢支撑完全可以替代同等级钢材进口屈曲约束支撑。
A buckling-restrained brace(BRB) is an energy dissipation device making use of metal yielding and its advantages include the stable energy dispersion capacity,easy construction and low-cost fabrication,etc.This paper presents the low-cycle fatigue test of Q235 steel BRB.The failure modes and the effects on its failure modes are discussed and compared with the experiments introduced in the literature.Test results show that the BRB possesses the stable hysteretic performance and its cumulative plastic deformation is much larger than the value suggested in the AISC specification.The effect of the weld in the BRB's yielding range on the low-cycle fatigue performance is evident.However,it was observed from the experiment that the effect of the weld is reduced due to the large strain loading amplitude.The mutli-wave buckling of the core brace member is regarded as the main reason why the low-cycle fatigue performance of BRB was lower compared to the corresponding material.Under the similar loading pattern,the performance of Q235 steel BRB is the same as the SM400A BRB.Hence,the domestic BRB can replace the imported BRB based on the low-cycle fatigue data.
A buckling-restrained brace(BRB) is an energy dissipation device making use of metal yielding and its advantages include the stable energy dispersion capacity,easy construction and low-cost fabrication,etc.This paper presents the low-cycle fatigue test of Q235 steel BRB.The failure modes and the effects on its failure modes are discussed and compared with the experiments introduced in the literature.Test results show that the BRB possesses the stable hysteretic performance and its cumulative plastic deformation is much larger than the value suggested in the AISC specification.The effect of the weld in the BRB's yielding range on the low-cycle fatigue performance is evident.However,it was observed from the experiment that the effect of the weld is reduced due to the large strain loading amplitude.The mutli-wave buckling of the core brace member is regarded as the main reason why the low-cycle fatigue performance of BRB was lower compared to the corresponding material.Under the similar loading pattern,the performance of Q235 steel BRB is the same as the SM400A BRB.Hence,the domestic BRB can replace the imported BRB based on the low-cycle fatigue data.
引文
[1]Xie Q.State of the art of buckling-restrained braces in Asia[J].Journal of Constructional Steel Research,2005,61(6):727-748
[2]Tsai K C,Lai J W,Hwang Y C,et al.Research and application of double-core buckling restrained braces in Taiwan[C]//Proceedings of the13th World Conference on Earthquake Engineering.Canada,2004
[3]李妍,吴斌,王倩颖,等.防屈曲钢支撑阻尼器的试验研究[J].土木工程学报,2006,39(7):9-14(Li Yan,Wu Bin,Wang Qianying,et al.An experimental study of anti-buckling steel damping-braces[J].China Civil Engineering Journal,2006,39(7):9-14(in Chinese))
[4]李国强,孙飞飞,陈素文,等.大吨位国产TJⅡ型屈曲约束支撑的研制与试验研究[J].建筑钢结构进展,2009,11(4):22-26(Li Guoqiang,Sun Feifei,Chen Suwen,et al.Development and experimental study of large-tonnage domestic TJ II buckling-restrained brace[J].Progress in Steel Building Structures,2009,11(4):22-26(in Chinese))
[5]胡大柱,李国强,孙飞飞,等.屈曲约束支撑铰接框架足尺模型模拟地震振动台试验[J].土木工程学报,2010,43(增1):520-525(Hu Dazhu,Li Guoqiang,Sun Feifei,et al.Full-scale shaking table tests on a hingeconnected steel frame with buckling restrained braces[J].China Civil Engineering Journal,2010,43(S1):520-525(in Chinese))
[6]郭彦林,江磊鑫.型钢组合装配式防屈曲支撑性能及设计方法研究[J].建筑结构,2010,40(1):30-37(Guo Yanlin,Jiang Leixin.Behavior and application of bucklingrestrained braces assembled with section steels[J].Building Structure,2010,40(1):30-37(in Chinese))
[7]黄海涛,尹学军,高向宇,等.足尺错十字截面组合热轧角钢防屈曲支撑试验研究[J].土木工程学报,2010,43(增2):164-169(Huang Haitao,Yin Xuejun,Gao Xiangyu,et al.Static test studies on full-scale bucklingrestrained brace specimens with quasi-cross section of steel angles[J].China Civil Engineering Journal,2010,43(S2):164-169(in Chinese))
[8]邓雪松,邹征敏,周云.开槽式三重钢管防屈曲耗能支撑试验研究与有限元模拟[J].土木工程学报,2010,43(12):41-49(Deng Xuesong,Zou Zhengmin,Zhou Yun.Experimental and finite-element studies of notched triplesteel tube buckling-resistant brace[J].China Civil Engineering Journal,2010,43(12):41-49(in Chinese))
[9]周云,邓雪松,钱洪涛,等.开孔式三重钢管防屈曲耗能支撑性能试验研究[J].土木工程学报,2010,43(9):77-87(Zhou Yun,Deng Xuesong,Qian Hongtao,et al.An experimental study of the perforation-type triple-steel tube Buckling-Restrained Brace[J].China Civil Engineering Journal,2010,43(9):77-87(in Chinese))
[10]赵俊贤,吴斌,欧进萍.新型全钢防屈曲支撑的拟静力滞回性能试验[J].土木工程学报,2011,44(4):60-70(Zhao Junxian,Wu Bin,Ou Jinping.Uniaxial quasi-static cyclic tests on the hysteretic behavior of a novel type of allsteel buckling-restrained brace[J].China Civil Engineering Journal,2011,44(4):60-70(in Chinese))
[11]Wang C,Usami T,Funayama J.Improving low-cycle fatigue performance of high-performance bucklingrestrained braces by toe-finished method[J].Journal of Earthquake Engineering,2012,16(8):1248-1268
[12]梅洋,吴斌,赵俊贤,等.组合钢管混凝土式防屈曲支撑[J].灾害学,2010,25(增1):99-104(Mei Yang,Wu Bin,Zhao Junxian,et al.Buckling-restrained braces with combined concrete-filled steel tubes[J].Journal of Catastrophology,2010,25(S1):99-104(in Chinese))
[13]Matsui R,Takeuchi T.Effect of local buckling of core plates on cumulative deformation capacity in bucklingrestrained braces[C]//Proceedings of the STESSA2012.Chile,2012:609-613
[14]AISC.Seismic provisions for structural steel buildings[R].Chicago,Illinois:AISC,2010
[2]Tsai K C,Lai J W,Hwang Y C,et al.Research and application of double-core buckling restrained braces in Taiwan[C]//Proceedings of the13th World Conference on Earthquake Engineering.Canada,2004
[3]李妍,吴斌,王倩颖,等.防屈曲钢支撑阻尼器的试验研究[J].土木工程学报,2006,39(7):9-14(Li Yan,Wu Bin,Wang Qianying,et al.An experimental study of anti-buckling steel damping-braces[J].China Civil Engineering Journal,2006,39(7):9-14(in Chinese))
[4]李国强,孙飞飞,陈素文,等.大吨位国产TJⅡ型屈曲约束支撑的研制与试验研究[J].建筑钢结构进展,2009,11(4):22-26(Li Guoqiang,Sun Feifei,Chen Suwen,et al.Development and experimental study of large-tonnage domestic TJ II buckling-restrained brace[J].Progress in Steel Building Structures,2009,11(4):22-26(in Chinese))
[5]胡大柱,李国强,孙飞飞,等.屈曲约束支撑铰接框架足尺模型模拟地震振动台试验[J].土木工程学报,2010,43(增1):520-525(Hu Dazhu,Li Guoqiang,Sun Feifei,et al.Full-scale shaking table tests on a hingeconnected steel frame with buckling restrained braces[J].China Civil Engineering Journal,2010,43(S1):520-525(in Chinese))
[6]郭彦林,江磊鑫.型钢组合装配式防屈曲支撑性能及设计方法研究[J].建筑结构,2010,40(1):30-37(Guo Yanlin,Jiang Leixin.Behavior and application of bucklingrestrained braces assembled with section steels[J].Building Structure,2010,40(1):30-37(in Chinese))
[7]黄海涛,尹学军,高向宇,等.足尺错十字截面组合热轧角钢防屈曲支撑试验研究[J].土木工程学报,2010,43(增2):164-169(Huang Haitao,Yin Xuejun,Gao Xiangyu,et al.Static test studies on full-scale bucklingrestrained brace specimens with quasi-cross section of steel angles[J].China Civil Engineering Journal,2010,43(S2):164-169(in Chinese))
[8]邓雪松,邹征敏,周云.开槽式三重钢管防屈曲耗能支撑试验研究与有限元模拟[J].土木工程学报,2010,43(12):41-49(Deng Xuesong,Zou Zhengmin,Zhou Yun.Experimental and finite-element studies of notched triplesteel tube buckling-resistant brace[J].China Civil Engineering Journal,2010,43(12):41-49(in Chinese))
[9]周云,邓雪松,钱洪涛,等.开孔式三重钢管防屈曲耗能支撑性能试验研究[J].土木工程学报,2010,43(9):77-87(Zhou Yun,Deng Xuesong,Qian Hongtao,et al.An experimental study of the perforation-type triple-steel tube Buckling-Restrained Brace[J].China Civil Engineering Journal,2010,43(9):77-87(in Chinese))
[10]赵俊贤,吴斌,欧进萍.新型全钢防屈曲支撑的拟静力滞回性能试验[J].土木工程学报,2011,44(4):60-70(Zhao Junxian,Wu Bin,Ou Jinping.Uniaxial quasi-static cyclic tests on the hysteretic behavior of a novel type of allsteel buckling-restrained brace[J].China Civil Engineering Journal,2011,44(4):60-70(in Chinese))
[11]Wang C,Usami T,Funayama J.Improving low-cycle fatigue performance of high-performance bucklingrestrained braces by toe-finished method[J].Journal of Earthquake Engineering,2012,16(8):1248-1268
[12]梅洋,吴斌,赵俊贤,等.组合钢管混凝土式防屈曲支撑[J].灾害学,2010,25(增1):99-104(Mei Yang,Wu Bin,Zhao Junxian,et al.Buckling-restrained braces with combined concrete-filled steel tubes[J].Journal of Catastrophology,2010,25(S1):99-104(in Chinese))
[13]Matsui R,Takeuchi T.Effect of local buckling of core plates on cumulative deformation capacity in bucklingrestrained braces[C]//Proceedings of the STESSA2012.Chile,2012:609-613
[14]AISC.Seismic provisions for structural steel buildings[R].Chicago,Illinois:AISC,2010
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