震损框架节点外包钢板加固试验研究
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摘要
针对震损框架节点的修复加固以及附加阻尼器支撑连接节点的增强加固,提出一种外包钢板加固方法,并探讨了相应设计参数的确定方法,基于四个足尺寸钢筋混凝土框架节点试件进行了拟静力试验,以验证其加固效果及可靠性。试验首先通过预损加载来模拟框架节点的地震损伤,其后分别按不同外包钢板厚度和不同界面灌浆料进行节点加固,并进行再加载试验。结果表明:外包钢板厚度参数对于震损节点加固试件的屈服强度、极限强度及屈服位移等抗震性能的影响十分敏感,而外包钢板与内部节点间的填充材料选择,诸如结构胶或无收缩性水泥灌浆料等,则对节点试件的加固效果影响不大;对于连接阻尼器支撑节点,外包钢板加固方法可有效保证节点在较大阻尼器出力下仍保持良好的整体性和安全性,从而达到"强节点弱构件"的抗震设计目的。
A steel-enveloped approach is proposed for seismic repair of earthquake-damaged frame joints and seismic strengthening of frame joints connected with added dampers.The determination method of design parameters is discussed.Four full-scale specimens are tested by pseudo-static method to verify the retrofitting effect and reliability of the steel-enveloped approach.The experimental program includes the pre-damage testing,the steel-enveloped retrofitting,and the retesting of post-retrofit specimens.The test result shows that the thickness of enveloped steel plates plays a more important role in increasing the yield strength,ultimate strength and yield displacement of original specimens than interface disposal measures.For the frame joints connected with damper-braces,the porposed steel-enveloped approach can be applied to ensure a good seismic integrity and safety of the frame joint with a larger damper force,so as to realize the design goal of Strong Joint-Weak Member.
A steel-enveloped approach is proposed for seismic repair of earthquake-damaged frame joints and seismic strengthening of frame joints connected with added dampers.The determination method of design parameters is discussed.Four full-scale specimens are tested by pseudo-static method to verify the retrofitting effect and reliability of the steel-enveloped approach.The experimental program includes the pre-damage testing,the steel-enveloped retrofitting,and the retesting of post-retrofit specimens.The test result shows that the thickness of enveloped steel plates plays a more important role in increasing the yield strength,ultimate strength and yield displacement of original specimens than interface disposal measures.For the frame joints connected with damper-braces,the porposed steel-enveloped approach can be applied to ensure a good seismic integrity and safety of the frame joint with a larger damper force,so as to realize the design goal of Strong Joint-Weak Member.
引文
[1]余琼,李思明.柱加大截面法加固框架节点试验分析[J].工业建筑,2005,35(4):43-47(Yu Qiong,LiSiming.Analysis of RC beam-column joints strengthenedby enlarging column section[J].Industrial Construction,2005,35(4):43-47(in Chinese))
[2]Pimanmas A,Chaimahawan P.Shear strength of beam-column joint with enlarged joint area[J].EngineeringStructures,2010,32(9):2529-2545
[3]陆洲导,刘长青,张克纯,等.外包钢套法加固钢筋混凝土框架节点试验研究[J].四川大学学报:工程科学版,2010,42(3):56-62(Lu Zhoudao,Liu Changqing,ZhangKechun,et al.Experimental study on the seismicperformance of enveloped steel strengthened RC frame joint[J].Journal of Sichuan University:Engineering ScienceEdition,2010,42(3):56-62(in Chinese))
[4]Yen J,Chien H K.Steel plates rehabilitated RC beam-column joints subjected to vertical cyclic loads[J].Construction and Building Materials,2010,24(3):332-339
[5]Mahini S S,Ronagh H R.Strength and ductility of FRPweb-bonded RC beams for the assessment of retrofittedbeam-column joints[J].Composite Structures,2010,92(6):1325-1332
[6]Niroomandi A,Maheri A,Maheri M R,et al.Seismicperformance of ordinary RC frames retrofitted at joints byFRP sheets[J].Engineering Structures,2010,32(8):2326-2336
[7]王作虎,杜修力,詹界东,等.AFRP加固混凝土梁柱节点抗震性能研究[J].北京工业大学学报,2009,35(1):30-35(Wang Zuohu,Du Xiuli,Zhan Jiedong,et al.Experimental study on the seismic behavior of beam-columnjoints strengthened with AFRP sheets[J].Journal ofBeijing University of Technology,2009,35(1):30-35(inChinese))
[8]余江滔,苏磊,陆洲导,等.玄武岩纤维加固震损三维混凝土框架节点抗震试验[J].同济大学学报:自然科学版,2011,39(1):18-24(Yu Jiangtao,Su Lei,LuZhoudao,et al.Experimental study on bfrp-reinforced pre-damaged concrete beam-column joints by simulatedearthquake[J].Journal of Tongji University:NaturalScience Edition,2011,39(1):18-24(in Chinese))
[9]吴波,王维俊.碳纤维布加固钢筋混凝土框架节点的抗震性能试验研究[J].土木工程学报,2005,38(4):60-65,83(Wu Bo,Wang Weijun.An experimental study onthe seismic behavior of beam-column joints strengthenedwith carbon fiber sheets[J].China Civil EngineeringJournal,2005,38(4):60-65,83(in Chinese))
[10]王步,刘伯权,王溥.碳纤维布抗震加固混凝土T型节点试验[J].长安大学学报:自然科学版,2008,28(2):69-74(Wang Bu,Liu Boquan,Wang Pu.Tests onreinforced concrete T-joints strengthened with carbon-fiber-reinforced-plastic(CFRP)sheets to seismic resistance[J].Journal of Chang’an University:Natural ScienceEdition,2008,28(2):69-74(in Chinese))
[11]Le-Trung K,Lee K,Lee J,et al.Experimental study ofRC beam-column joints strengthened using CFRPcomposites[J].Composites Part B:Engineering,2010,41(1):76-85
[12]彭亚萍,王铁成,张玉敏,等.FRP加固混凝土梁柱边节点抗震性能试验[J].哈尔滨工业大学学报,2007,39(12):1969-1973(Peng Yaping,Wang Tiecheng,ZhangYumin,et al.Experimental study on seismic performanceof concrete beam-column joints reinforced with FRP[J].Journal of Harbin Institute of Technology,2007,39(12):1969-1973(in Chinese))
[13]曹忠民,李爱群,王亚勇,等.钢绞线网片-聚合物砂浆加固空间框架节点试验[J].东南大学学报:自然科学版,2007,37(2):235-239(Cao Zhongmin,Li Aiqun,Wang Yayong,et al.Experimental study on RC spacebeam-column joints strengthened with high strength steelwire mesh and polymer mortar[J].Journal of SoutheastUniversity:Natural Science Edition,2007,37(2):235-239(in Chinese))
[14]Tsonos A G.Effectiveness of CFRP-jackets and RC-jacketsin post-earthquake and pre-earthquake retrofitting of beam-column subassemblages[J].Engineering Structures,2008,30(3):777-793
[15]余江滔,陆洲导,张克纯.震损钢筋混凝土框架节点修复后抗震性能试验研究[J].建筑结构学报,2010,31(12):64-73(Yu Jiangtao,Lu Zhoudao,Zhang Kechun.Experimental study on seismic behavior of strengthened RCcolumn-beam joints damaged by simulated earthquake[J].Journal of Building Structures,2010,31(12):64-73(inChinese))
[16]中国建筑标准设计研究院.09SG610-2国家建筑标准设计图集:建筑结构消能减震(振)设计[M].北京:中国计划出版社,2009
[17]翁大根,张瑞甫,张世明,等.基于性能和需求的消能减震设计方法在震后框架结构加固中的应用[J].建筑结构学报,2010,31(增2):66-75(Weng Dagen,ZhangRuifu,Zhang Shiming,et al.Application of energydissipation method in post-earthquake RC frame retrofitbased on performance and demand[J].Journal of BuildingStructures,2010,31(S2):66-75(in Chinese))
[18]Weng Dagen,Zhang Chao,Lu Xilin.Application of energydissipation technology to C-category frame structure ofschool buildings for seismic retrofit of increasingprecautionary intensity[J].Advanced Materials Research,2011,163-167:3480-3487
[19]GB50023—2009建筑抗震鉴定标准[S].北京:中国建筑工业出版社,2009(GB50023—2009Standard forseismic appraisal of buildings[S].Beijing:ChinaArchitecture&Building Press,2009(in Chinese))
[20]吕西林,李森,Urukap T H.钢筋混凝土框架“强柱弱梁”抗震措施的试验研究[J].结构工程师,2011,27(增):151-156(Lu Xilin,Li Sen,Urukap T H.Tests onseismic fortification measures about“strong column andweak beam”for RC frame[J].Structural Engineers,2011,27(S):151-156(in Chinese))
[2]Pimanmas A,Chaimahawan P.Shear strength of beam-column joint with enlarged joint area[J].EngineeringStructures,2010,32(9):2529-2545
[3]陆洲导,刘长青,张克纯,等.外包钢套法加固钢筋混凝土框架节点试验研究[J].四川大学学报:工程科学版,2010,42(3):56-62(Lu Zhoudao,Liu Changqing,ZhangKechun,et al.Experimental study on the seismicperformance of enveloped steel strengthened RC frame joint[J].Journal of Sichuan University:Engineering ScienceEdition,2010,42(3):56-62(in Chinese))
[4]Yen J,Chien H K.Steel plates rehabilitated RC beam-column joints subjected to vertical cyclic loads[J].Construction and Building Materials,2010,24(3):332-339
[5]Mahini S S,Ronagh H R.Strength and ductility of FRPweb-bonded RC beams for the assessment of retrofittedbeam-column joints[J].Composite Structures,2010,92(6):1325-1332
[6]Niroomandi A,Maheri A,Maheri M R,et al.Seismicperformance of ordinary RC frames retrofitted at joints byFRP sheets[J].Engineering Structures,2010,32(8):2326-2336
[7]王作虎,杜修力,詹界东,等.AFRP加固混凝土梁柱节点抗震性能研究[J].北京工业大学学报,2009,35(1):30-35(Wang Zuohu,Du Xiuli,Zhan Jiedong,et al.Experimental study on the seismic behavior of beam-columnjoints strengthened with AFRP sheets[J].Journal ofBeijing University of Technology,2009,35(1):30-35(inChinese))
[8]余江滔,苏磊,陆洲导,等.玄武岩纤维加固震损三维混凝土框架节点抗震试验[J].同济大学学报:自然科学版,2011,39(1):18-24(Yu Jiangtao,Su Lei,LuZhoudao,et al.Experimental study on bfrp-reinforced pre-damaged concrete beam-column joints by simulatedearthquake[J].Journal of Tongji University:NaturalScience Edition,2011,39(1):18-24(in Chinese))
[9]吴波,王维俊.碳纤维布加固钢筋混凝土框架节点的抗震性能试验研究[J].土木工程学报,2005,38(4):60-65,83(Wu Bo,Wang Weijun.An experimental study onthe seismic behavior of beam-column joints strengthenedwith carbon fiber sheets[J].China Civil EngineeringJournal,2005,38(4):60-65,83(in Chinese))
[10]王步,刘伯权,王溥.碳纤维布抗震加固混凝土T型节点试验[J].长安大学学报:自然科学版,2008,28(2):69-74(Wang Bu,Liu Boquan,Wang Pu.Tests onreinforced concrete T-joints strengthened with carbon-fiber-reinforced-plastic(CFRP)sheets to seismic resistance[J].Journal of Chang’an University:Natural ScienceEdition,2008,28(2):69-74(in Chinese))
[11]Le-Trung K,Lee K,Lee J,et al.Experimental study ofRC beam-column joints strengthened using CFRPcomposites[J].Composites Part B:Engineering,2010,41(1):76-85
[12]彭亚萍,王铁成,张玉敏,等.FRP加固混凝土梁柱边节点抗震性能试验[J].哈尔滨工业大学学报,2007,39(12):1969-1973(Peng Yaping,Wang Tiecheng,ZhangYumin,et al.Experimental study on seismic performanceof concrete beam-column joints reinforced with FRP[J].Journal of Harbin Institute of Technology,2007,39(12):1969-1973(in Chinese))
[13]曹忠民,李爱群,王亚勇,等.钢绞线网片-聚合物砂浆加固空间框架节点试验[J].东南大学学报:自然科学版,2007,37(2):235-239(Cao Zhongmin,Li Aiqun,Wang Yayong,et al.Experimental study on RC spacebeam-column joints strengthened with high strength steelwire mesh and polymer mortar[J].Journal of SoutheastUniversity:Natural Science Edition,2007,37(2):235-239(in Chinese))
[14]Tsonos A G.Effectiveness of CFRP-jackets and RC-jacketsin post-earthquake and pre-earthquake retrofitting of beam-column subassemblages[J].Engineering Structures,2008,30(3):777-793
[15]余江滔,陆洲导,张克纯.震损钢筋混凝土框架节点修复后抗震性能试验研究[J].建筑结构学报,2010,31(12):64-73(Yu Jiangtao,Lu Zhoudao,Zhang Kechun.Experimental study on seismic behavior of strengthened RCcolumn-beam joints damaged by simulated earthquake[J].Journal of Building Structures,2010,31(12):64-73(inChinese))
[16]中国建筑标准设计研究院.09SG610-2国家建筑标准设计图集:建筑结构消能减震(振)设计[M].北京:中国计划出版社,2009
[17]翁大根,张瑞甫,张世明,等.基于性能和需求的消能减震设计方法在震后框架结构加固中的应用[J].建筑结构学报,2010,31(增2):66-75(Weng Dagen,ZhangRuifu,Zhang Shiming,et al.Application of energydissipation method in post-earthquake RC frame retrofitbased on performance and demand[J].Journal of BuildingStructures,2010,31(S2):66-75(in Chinese))
[18]Weng Dagen,Zhang Chao,Lu Xilin.Application of energydissipation technology to C-category frame structure ofschool buildings for seismic retrofit of increasingprecautionary intensity[J].Advanced Materials Research,2011,163-167:3480-3487
[19]GB50023—2009建筑抗震鉴定标准[S].北京:中国建筑工业出版社,2009(GB50023—2009Standard forseismic appraisal of buildings[S].Beijing:ChinaArchitecture&Building Press,2009(in Chinese))
[20]吕西林,李森,Urukap T H.钢筋混凝土框架“强柱弱梁”抗震措施的试验研究[J].结构工程师,2011,27(增):151-156(Lu Xilin,Li Sen,Urukap T H.Tests onseismic fortification measures about“strong column andweak beam”for RC frame[J].Structural Engineers,2011,27(S):151-156(in Chinese))
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