防屈曲支撑加固既有RC框架结构抗震性能研究
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摘要
参照建于20世纪70年代末的具有代表性的8层RC框架结构,按照1∶2.5的比例进行缩尺,制作一个两榀两层三跨的RC框架子结构模型。采用外贴防屈曲支撑RC框架的方式分别加固子结构模型每榀的中间跨,两榀框架的加固方式分别为植筋加固和抗剪键加固。对加固后的模型进行拟静力抗震性能试验,试验研究的结果表明,两种加固方法均安全可靠;防屈曲支撑加固后RC框架结构的抗震性能明显提高,在规范允许的变形条件下,地震能量主要被防屈曲支撑耗散,试验结果表明防屈曲支撑在地震作用时耗散的地震能量占到结构总耗能的66.9%以上。另外,根据FEMA356中基于性能的抗震设计方法,采用Perform-3D软件对框架结构模型进行非线性分析,分析结果与试验结果吻合良好。
A 1∶ 2.5 two-storey RC-frame-structure model is designed as a substructure of an existing eight-storey RC building built in late 1970s.It is respectively reinforced with two buckling-restrained-braces frames by means of embedded bars and shear connectors respectively on the middle span of the three-span RC model structure on both sides.Pseudo-static cyclic loading tests were carried out on the model frame substructure.The test results show that the two connecting methods of buckling-restrained braced frame perform well together with the existing frame structure under cyclic loading,and buckling-restrained braces increase the seismic performance of model structure and seismic energy to the structures during earthquake is mainly absorbed by buckling-restrained braces,leading to less damage to structure elements.The test result shows that more than 66.9% seismic energy is absorbed by buckling-restrained braces.Nonlinear analysis of the frame structure is conducted by the program Perform-3D and the computation results agree well with the tested ones.
A 1∶ 2.5 two-storey RC-frame-structure model is designed as a substructure of an existing eight-storey RC building built in late 1970s.It is respectively reinforced with two buckling-restrained-braces frames by means of embedded bars and shear connectors respectively on the middle span of the three-span RC model structure on both sides.Pseudo-static cyclic loading tests were carried out on the model frame substructure.The test results show that the two connecting methods of buckling-restrained braced frame perform well together with the existing frame structure under cyclic loading,and buckling-restrained braces increase the seismic performance of model structure and seismic energy to the structures during earthquake is mainly absorbed by buckling-restrained braces,leading to less damage to structure elements.The test result shows that more than 66.9% seismic energy is absorbed by buckling-restrained braces.Nonlinear analysis of the frame structure is conducted by the program Perform-3D and the computation results agree well with the tested ones.
引文
[1]Tremblay R,Bolduc P,Neville R,et al.Seismic testingand performance of buckling-restrained bracing systems[J].Canadian Journal of Civil Engineering,2006,33(2):183-198
[2]Fahnestock L A,Sause R,Ricles J M.Seismic responseand performance of buckling-restrained braced frames[J].Journal of Structural Engineering,2007,133(9):1195-1204
[3]Fahnestock L A,Ricles J M,Sause R.Experimentalevaluation of a large-scale buckling-restrained braced frame[J].Journal of Structural Engineering,2007,133(9):1205-1214
[4]Berman J W,Bruneau M.Cyclic testing of a bucklingrestrained braced frame with unconstrained gussetconnections[J].Journal of Structural Engineering,2009,135(12):1499-1510
[5]顾炉忠,高向宇,徐建伟,等.防屈曲支撑混凝土框架结构抗震性能试验研究[J].建筑结构学报,2011,32(7):101-111(Gu Luzhong,Gao Xiangyu,Xu Jianwei,etal.Experimental research on seismic performance of BRBconcrete frames[J].Journal of Building Structures,2011,32(7):101-111(in Chinese))
[6]周云.防屈曲耗能支撑结构设计与应用[M].北京:中国建筑工业出版社,2007
[7]Saiful I,Wu Hui.Seismic retrofit of a 14-story suspendedfloor building using advanced analysis and energy dissipationdevices[C]//Seventh U.S.National Conference onEarthquake Engineering.Boston,Mass,2002
[8]Saiful I,Huang S C,Wu Hui.Seismic retrofit of a non-ductile concrete building using Buckling Restrained BraceFrame(BRBF)[C]//SEAOC 2004 Convention Proceedings.Monterey,California,2004:31-42
[9]李国强,宫海,张杨,等.TJ型屈曲约束支撑在加固工程中关键技术研究[J].建筑结构,2010,40(增):135-138(Li Guoqiang,Gong Hai,Zhang Yang,et al.Study onkey technologies of TJ buckling restrained braces instrengthening projects[J].Journal of Building Structures,2010,40(S):135-138(in Chinese))
[10]刘珩,吴徽.防屈曲支撑框架的非线性性能研究[C]//第六届全国土木工程研究生学术论坛论文集,2008
[11]高向宇,杜海燕,张慧,等.国标Q235热轧钢材防屈曲支撑抗震性能试验研究[J].建筑结构,2008,38(3):91-95(Gao Xiangyu,Du Haiyan,Zhang Hui,et al.Experimental study on seismic performance of buckling-restrained brace made of Q235 hot-rolled steel in China[J].Journal of Building Structures,2008,38(3):91-95(in Chinese))
[12]赵健,刘珩,吴徽.防屈曲支撑框架试验研究[C]//中国钢协结构稳定与疲劳分会第12届(ASSF-2010)学术交流会暨教学研讨会论文集,2010
[13]Zhao Jian,Wu Hui.Experiment study on Buckling-RestrainedBraced Reinforced Concrete Frame[C]//Proceedings of the3rd International Conference on Contemporary Problems inArchitecture and Construction,2011
[14]TJ11—1978工业与民用建筑抗震设计规范[S].北京:中国建筑工业出版社,1978
[15]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB50011—2010Code for seismicdesign of buildings[S].Beijing:China Architecture&Building Press,2010(in Chinese))
[16]GB50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002(GB50010—2002Code for designof concrete structures[S].Beijing:China Architecture&Building Press,2002(in Chinese))
[17]JGJ145—2004混凝土结构后锚固技术规程[S].北京:中国建筑工业出版社,2005(JGJ145—2004Technicalspecification for post-installed fastenings in concretestructures[S].Beijing:China Architecture&BuildingPress,2005(in Chinese))
[18]GB50017—2003钢结构设计规范[S].北京:中国计划出版社,2003(GB50017—2003Code for design of steelstructures[S].Beijing:China Planning Press,2003(inChinese))
[19]JGJ101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997(JGJ101—1996Specification oftesting methods for earthquake resistant building[S].Beijing:China Architecture&Building Press,1997(inChinese))
[20]余志武,罗小勇.水平低周反复荷载作用下无粘结部分预应力混凝土框架的抗震性能研究[J].建筑结构学报,1996,17(2):30-36(Yu Zhiwu,Luo Xiaoyong.Experimental research on aseismic properties of unbondedP.C.frame under horizontal low cyclic loading[J].Journal of Building Structures,1996,17(2):30-36(inChinese))
[21]夏敬谦,关国雄,罗学海,等.剪力墙结构、框架填充墙结构模型模拟地震试验研究[J].地震工程与工程振动,1996,16(2):55-66
[22]Computers and Structures,Inc..Perform-3D v4.0.3[OL].US:Computers and Structures,Inc.,2007
[23]苏志彬,林述涛.结构非线性分析与性能评价软件PERFORM-3D[J].建筑结构:技术通讯,2007(3):25-27
[2]Fahnestock L A,Sause R,Ricles J M.Seismic responseand performance of buckling-restrained braced frames[J].Journal of Structural Engineering,2007,133(9):1195-1204
[3]Fahnestock L A,Ricles J M,Sause R.Experimentalevaluation of a large-scale buckling-restrained braced frame[J].Journal of Structural Engineering,2007,133(9):1205-1214
[4]Berman J W,Bruneau M.Cyclic testing of a bucklingrestrained braced frame with unconstrained gussetconnections[J].Journal of Structural Engineering,2009,135(12):1499-1510
[5]顾炉忠,高向宇,徐建伟,等.防屈曲支撑混凝土框架结构抗震性能试验研究[J].建筑结构学报,2011,32(7):101-111(Gu Luzhong,Gao Xiangyu,Xu Jianwei,etal.Experimental research on seismic performance of BRBconcrete frames[J].Journal of Building Structures,2011,32(7):101-111(in Chinese))
[6]周云.防屈曲耗能支撑结构设计与应用[M].北京:中国建筑工业出版社,2007
[7]Saiful I,Wu Hui.Seismic retrofit of a 14-story suspendedfloor building using advanced analysis and energy dissipationdevices[C]//Seventh U.S.National Conference onEarthquake Engineering.Boston,Mass,2002
[8]Saiful I,Huang S C,Wu Hui.Seismic retrofit of a non-ductile concrete building using Buckling Restrained BraceFrame(BRBF)[C]//SEAOC 2004 Convention Proceedings.Monterey,California,2004:31-42
[9]李国强,宫海,张杨,等.TJ型屈曲约束支撑在加固工程中关键技术研究[J].建筑结构,2010,40(增):135-138(Li Guoqiang,Gong Hai,Zhang Yang,et al.Study onkey technologies of TJ buckling restrained braces instrengthening projects[J].Journal of Building Structures,2010,40(S):135-138(in Chinese))
[10]刘珩,吴徽.防屈曲支撑框架的非线性性能研究[C]//第六届全国土木工程研究生学术论坛论文集,2008
[11]高向宇,杜海燕,张慧,等.国标Q235热轧钢材防屈曲支撑抗震性能试验研究[J].建筑结构,2008,38(3):91-95(Gao Xiangyu,Du Haiyan,Zhang Hui,et al.Experimental study on seismic performance of buckling-restrained brace made of Q235 hot-rolled steel in China[J].Journal of Building Structures,2008,38(3):91-95(in Chinese))
[12]赵健,刘珩,吴徽.防屈曲支撑框架试验研究[C]//中国钢协结构稳定与疲劳分会第12届(ASSF-2010)学术交流会暨教学研讨会论文集,2010
[13]Zhao Jian,Wu Hui.Experiment study on Buckling-RestrainedBraced Reinforced Concrete Frame[C]//Proceedings of the3rd International Conference on Contemporary Problems inArchitecture and Construction,2011
[14]TJ11—1978工业与民用建筑抗震设计规范[S].北京:中国建筑工业出版社,1978
[15]GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010(GB50011—2010Code for seismicdesign of buildings[S].Beijing:China Architecture&Building Press,2010(in Chinese))
[16]GB50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002(GB50010—2002Code for designof concrete structures[S].Beijing:China Architecture&Building Press,2002(in Chinese))
[17]JGJ145—2004混凝土结构后锚固技术规程[S].北京:中国建筑工业出版社,2005(JGJ145—2004Technicalspecification for post-installed fastenings in concretestructures[S].Beijing:China Architecture&BuildingPress,2005(in Chinese))
[18]GB50017—2003钢结构设计规范[S].北京:中国计划出版社,2003(GB50017—2003Code for design of steelstructures[S].Beijing:China Planning Press,2003(inChinese))
[19]JGJ101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997(JGJ101—1996Specification oftesting methods for earthquake resistant building[S].Beijing:China Architecture&Building Press,1997(inChinese))
[20]余志武,罗小勇.水平低周反复荷载作用下无粘结部分预应力混凝土框架的抗震性能研究[J].建筑结构学报,1996,17(2):30-36(Yu Zhiwu,Luo Xiaoyong.Experimental research on aseismic properties of unbondedP.C.frame under horizontal low cyclic loading[J].Journal of Building Structures,1996,17(2):30-36(inChinese))
[21]夏敬谦,关国雄,罗学海,等.剪力墙结构、框架填充墙结构模型模拟地震试验研究[J].地震工程与工程振动,1996,16(2):55-66
[22]Computers and Structures,Inc..Perform-3D v4.0.3[OL].US:Computers and Structures,Inc.,2007
[23]苏志彬,林述涛.结构非线性分析与性能评价软件PERFORM-3D[J].建筑结构:技术通讯,2007(3):25-27
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