螺旋箍筋约束防屈曲支撑设计方法及滞回性能研究
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摘要
基于钢套筒约束防屈曲支撑的设计理论,给出了适用于螺旋箍筋约束防屈曲支撑的设计方法。设计制作了两种钢芯截面的螺旋箍筋约束防屈曲支撑构件,通过低周往复试验验证设计方法的合理性,研究此类支撑的滞回性能。试验结果表明:按照所建议的设计方法制作的螺旋箍筋约束防屈曲支撑构件具有稳定的滞回耗能性能,可以用于实际工程。
Design method of buckling restrained brace( BRB) confined with spiral reinforcement was formed based on the theory of the ones confined with steel tube. Then this kind of BRB specimens with two types of steel core section was designed. Cyclic loading was carried out under those BRB elements to verify the design method and their hysteretic behavior. The test results show that the seismic performance and hysteretic energy dissipation capacity of the BRB specimens designed with this method performed well,which means it fits for using on practical engineering.
Design method of buckling restrained brace( BRB) confined with spiral reinforcement was formed based on the theory of the ones confined with steel tube. Then this kind of BRB specimens with two types of steel core section was designed. Cyclic loading was carried out under those BRB elements to verify the design method and their hysteretic behavior. The test results show that the seismic performance and hysteretic energy dissipation capacity of the BRB specimens designed with this method performed well,which means it fits for using on practical engineering.
引文
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[12]GB/T 228—2002金属材料室温拉伸试验方法[S].
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[2]汪家铭,中岛正爱,陆烨.屈曲约束支撑体系的应用和研究进展[J].建筑钢结构进展,2005,7(1):1-12.
[3]Watanabe A,Hitomi Y,Saeki E,et al.Properties of Brace Encased in Buckling-Restraining Concrete and Steel Tube[C]//Proceedings of Ninth World Conference on Earthquake Engineering.1988:719-724.
[4]Iwata,Murai M.Buckling-Restrained Brace Using Steel Mortar Planks Performance Evaluation As a Hysteretic Damper[J].Earthquake Engineering and Structural Dynamics,2006,35(14):1807-1826.
[5]王华琪,丁洁民,何志军.防屈曲支撑的应用与设计[J].结构工程师,2007,23(4):6-11.
[6]Nakamura H,Maeda Y,Sasaki T,et al.Fatigue Properties of Practical-Scale Unbonded Braces[R].Nippon Steel Technical Report,2000:1-57.
[7]程光煜,叶列平,崔鸿超.防屈曲耗能钢支撑设计方法的研究[J].建筑结构学报,2008,29(1):40-48.
[8]GB 50010—2010混凝土结构设计规范[S].
[9]马宁.全钢防屈曲支撑及其钢框架结构抗震性能与设计方法[D].哈尔滨:哈尔滨工业大学,2010.
[10]GB 50011—2010建筑抗震设计规范[S].
[11]JGJ 297—2013建筑消能减震技术规程[S].
[12]GB/T 228—2002金属材料室温拉伸试验方法[S].
[13]ANSI/AISC 341-10.Seismic Provision for Structural Steel Buildings[S].Chicago:American Institute of Steel Construction,2010.