钢筋混凝土框架节点震损加固方法的对比研究
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摘要
近年来,许多研究者进行了地震中受损的混凝土框架梁-柱节点的修复和加固研究,提出了包括碳纤维、外包钢套、玄武岩、钢铰线-聚合物砂浆以及水泥基灌浆料加大截面等多种修复加固方法。本文对以上几种加固方法的特点,试验试件特征和试验步骤,震损程度以及试验结果进行了综述,比较分析了几种不同方法修复后受损节点的承载力和部分抗震性能指标。结果表明,通过适当的加固处理,受损构件完全有可能达到甚至是超过受损前的承载力和抗震性能。
In recent years,a number of researchers concentrated on the rehabilitation and strengthening of RC column-beam joints damaged by earthquake.Several methods,such as carbon fiber-reinforced polymer sheet,basalt fiber-reinforced polymer sheet,enveloped steel,composite cover of high strength wire mesh and polymer mortar and enlarging section with new concrete material are presented.A comprehensive survey is made in this paper concerning with the characteristics of mentioned methods,the layout of the specimens,the process of test,the level of seismic damage and the test data.The effects of the different methods on the strength and seismic performance of the repaired specimens are compared.Through comparison,the validation of rehabilitation and strengthening methods is verified,which means the mechanical properties of the damaged joints,once treated by an appropriate way,can recover or even exceed the original strength and seismic performance.
In recent years,a number of researchers concentrated on the rehabilitation and strengthening of RC column-beam joints damaged by earthquake.Several methods,such as carbon fiber-reinforced polymer sheet,basalt fiber-reinforced polymer sheet,enveloped steel,composite cover of high strength wire mesh and polymer mortar and enlarging section with new concrete material are presented.A comprehensive survey is made in this paper concerning with the characteristics of mentioned methods,the layout of the specimens,the process of test,the level of seismic damage and the test data.The effects of the different methods on the strength and seismic performance of the repaired specimens are compared.Through comparison,the validation of rehabilitation and strengthening methods is verified,which means the mechanical properties of the damaged joints,once treated by an appropriate way,can recover or even exceed the original strength and seismic performance.
引文
[1]GB 50011-2001,建筑抗震设计规范[S]GB 50011-2001,Code for Seismic Design of Buildings[S](in Chinese)
[2]张敏政.汶川地震中都江堰市的房屋震害[J].地震工程与工程振动,2008,28(3):1～6Zhang Min-zheng.Building Damage in DujiangyanDuring M8.0 Wenchuan Earthquake[J].EarthquakeEngineering and Engineering Vibration,2008 28(3):1～6(in Chinese)
[3]王亚勇.汶川地震建筑震害启示-抗震概念设计[J].建筑结构学报,2008,29(4):20～25Wang Ya-yong.Lessons Learnt from Building Damagesin the Wenchuan Earthquake-seismic Concept Design ofBuildings[J].Journal of Building Structure,2008,29(4),20～25(in Chinese)
[4]谢莉萍.碳纤维加固低配箍混凝土梁板柱节点抗震试验研究[D].上海:同济大学,2003Xie Li-ping.Aseismatic research of R/C beam-column-slab subassemblies with low ratio of transversereinforcement rehabilitated by carbon fiber reinfocedplastic(CFRP)[D].Shanghai:Tongji University,2003(in Chinese)
[5]程莉.玄武岩纤维加固震损混凝土框架节点抗震性能试验研究[D].上海:同济大学,2008Cheng Li.Investigation of BFRP-Reinforced Pre-damaged Concrete Beam-Column Joints under ReversedCyclic Loading[D].Shanghai:Tongji University,2008(in Chinese)
[6]胡显奇,申屠年.连续玄武岩纤维在军工及民用领域的应用[J].高科技纤维与应用,2005,30(6):7～13Hu Xian-qi,Shentu Nian.The Applications of the CBFin War Industry&Civil Fields[J].Hi-Tech Fiber&Application,2005,30(6):7～13(in Chinese)
[7]王焕杰.外包钢套法加固混凝土框架节点抗震性能试验研究[D].上海:同济大学,2008Wang Huan-jie.Experimental Study on the SeismicPerformance of Enveloped Steel Strengthened RC FrameJoint[D].Shanghai:Tongji University,2008(inChinese)
[8]曹忠民,李爱群,王亚勇,姚秋来.高强钢绞线网-聚合物砂浆复合面层加固震损梁柱节点的试验研究[J].工程抗震与加固改造,2005,27(6):45～50sCao Zhong-min,Li Ai-qun,Wang Ya-yong,Yao Qiu-lai.Experimental Study on Damaged RC Beam-columnJoints Strengthened by Composite Cover of High StrengthWire Mesh and Polymer Mortar[J].EarthquakeResistant Engineering and Retrofitting,2005,27(6):45～50(in Chinese)
[9]刘春浩.新型混凝土材料加固框架节点抗震性能试验研究[D].上海:同济大学,2010Liu Chun-hao.Study on Performance of ReinforcedConcrete Structure Strengthened by New ConcreteMaterial[D].Shanghai:Tongji University,2010(inChinese)
[10]GBT50448-2008,水泥基灌浆材料应用技术规范[S]GBT50448-2008,Code for Application Technique ofCementitious Grout[S](in Chinese)
[11]中华人民共和国住房和城乡建设部.地震灾后建筑鉴定与加固技术指南[M].北京:中国建筑工业出版社,2008Ministry of Housing and Urban-rural Dvelopment ofPeople's Republic of China.Post-earthquake BuildingEvaluation and Strengthening Technical Guidelines[M].Beijing:China Architecture&Building Press,2008(inChinese)
[12]中华人民共和国建设部.建筑地震破坏等级划分标准[S].建抗字第377号文,1990Ministry of Housing and Urban-rural Dvelopment ofPeople's Republic of China.Grading Standards forConstruction of Earthquake Damage[S].Seismic OrderNo.377,1990(in Chinese)
[13]中华人民共和国住房和城乡建设部.汶川地震灾后农房恢复重建技术导则(试行),2008Ministry of Housing and Urban-rural Dvelopment ofPeople's Republic of China.Reconstruction of RuralHousing after Wenchuan Earthquake TechnicalGuidelines(Trial)[S].2008(in Chinese)
[2]张敏政.汶川地震中都江堰市的房屋震害[J].地震工程与工程振动,2008,28(3):1～6Zhang Min-zheng.Building Damage in DujiangyanDuring M8.0 Wenchuan Earthquake[J].EarthquakeEngineering and Engineering Vibration,2008 28(3):1～6(in Chinese)
[3]王亚勇.汶川地震建筑震害启示-抗震概念设计[J].建筑结构学报,2008,29(4):20～25Wang Ya-yong.Lessons Learnt from Building Damagesin the Wenchuan Earthquake-seismic Concept Design ofBuildings[J].Journal of Building Structure,2008,29(4),20～25(in Chinese)
[4]谢莉萍.碳纤维加固低配箍混凝土梁板柱节点抗震试验研究[D].上海:同济大学,2003Xie Li-ping.Aseismatic research of R/C beam-column-slab subassemblies with low ratio of transversereinforcement rehabilitated by carbon fiber reinfocedplastic(CFRP)[D].Shanghai:Tongji University,2003(in Chinese)
[5]程莉.玄武岩纤维加固震损混凝土框架节点抗震性能试验研究[D].上海:同济大学,2008Cheng Li.Investigation of BFRP-Reinforced Pre-damaged Concrete Beam-Column Joints under ReversedCyclic Loading[D].Shanghai:Tongji University,2008(in Chinese)
[6]胡显奇,申屠年.连续玄武岩纤维在军工及民用领域的应用[J].高科技纤维与应用,2005,30(6):7～13Hu Xian-qi,Shentu Nian.The Applications of the CBFin War Industry&Civil Fields[J].Hi-Tech Fiber&Application,2005,30(6):7～13(in Chinese)
[7]王焕杰.外包钢套法加固混凝土框架节点抗震性能试验研究[D].上海:同济大学,2008Wang Huan-jie.Experimental Study on the SeismicPerformance of Enveloped Steel Strengthened RC FrameJoint[D].Shanghai:Tongji University,2008(inChinese)
[8]曹忠民,李爱群,王亚勇,姚秋来.高强钢绞线网-聚合物砂浆复合面层加固震损梁柱节点的试验研究[J].工程抗震与加固改造,2005,27(6):45～50sCao Zhong-min,Li Ai-qun,Wang Ya-yong,Yao Qiu-lai.Experimental Study on Damaged RC Beam-columnJoints Strengthened by Composite Cover of High StrengthWire Mesh and Polymer Mortar[J].EarthquakeResistant Engineering and Retrofitting,2005,27(6):45～50(in Chinese)
[9]刘春浩.新型混凝土材料加固框架节点抗震性能试验研究[D].上海:同济大学,2010Liu Chun-hao.Study on Performance of ReinforcedConcrete Structure Strengthened by New ConcreteMaterial[D].Shanghai:Tongji University,2010(inChinese)
[10]GBT50448-2008,水泥基灌浆材料应用技术规范[S]GBT50448-2008,Code for Application Technique ofCementitious Grout[S](in Chinese)
[11]中华人民共和国住房和城乡建设部.地震灾后建筑鉴定与加固技术指南[M].北京:中国建筑工业出版社,2008Ministry of Housing and Urban-rural Dvelopment ofPeople's Republic of China.Post-earthquake BuildingEvaluation and Strengthening Technical Guidelines[M].Beijing:China Architecture&Building Press,2008(inChinese)
[12]中华人民共和国建设部.建筑地震破坏等级划分标准[S].建抗字第377号文,1990Ministry of Housing and Urban-rural Dvelopment ofPeople's Republic of China.Grading Standards forConstruction of Earthquake Damage[S].Seismic OrderNo.377,1990(in Chinese)
[13]中华人民共和国住房和城乡建设部.汶川地震灾后农房恢复重建技术导则(试行),2008Ministry of Housing and Urban-rural Dvelopment ofPeople's Republic of China.Reconstruction of RuralHousing after Wenchuan Earthquake TechnicalGuidelines(Trial)[S].2008(in Chinese)
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