绵阳市房屋震害分析及震后加固方法研究
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摘要
汶川地震中,绵阳市大部分房屋均有不同程度破坏。本文对绵阳市砖混结构、框架结构房屋所受震害、加固方案进行分析,对施工过程进行了跟踪调研。经过几次明显震感的余震后,经检测,加固过的房屋未出现任何破坏,表明:(1)依据现行相关规范要求进行加固的房屋,抗震能力明显增强。(2)依据墙体破坏程度和墙体承重与否,对墙体采用不同的加固方法,可达到安全快捷的效果。(3)短柱引发结构脆性破坏,采用加箍筋办法对其加强,其抗剪承载力可满足抗震要求。(4)加固针对性要强,震害严重的墙体和抗震薄弱部位墙体要重点加固,从整体上提高建筑抗震能力。
In Wenchuan earthquake,Most building structures were damaged for different degrees in Mianyang city.Damage and strength of masonry and frame structures in Mianyang city are analysis,and buildings for post-earthquake reinforcement situation are investigated in this paper.The results show that:(1) The seismic damage of buildings is slight according to applicable code,most of them repairing easily and can be used.(2) According to height of buildings,damage degree and locations of walls adopt different reinforcement which can be safe and economical.(3) Short columns can induced brittle failure,strengthen it with additional stirrups,which shearing capacity can meet the seismic requirements.(4) Seismic capacity of buildings are improving obviously after reinforcement.The buildings do not appear any structural damage while happened three times over 5 magnitude Mianzhu city earthquake.
In Wenchuan earthquake,Most building structures were damaged for different degrees in Mianyang city.Damage and strength of masonry and frame structures in Mianyang city are analysis,and buildings for post-earthquake reinforcement situation are investigated in this paper.The results show that:(1) The seismic damage of buildings is slight according to applicable code,most of them repairing easily and can be used.(2) According to height of buildings,damage degree and locations of walls adopt different reinforcement which can be safe and economical.(3) Short columns can induced brittle failure,strengthen it with additional stirrups,which shearing capacity can meet the seismic requirements.(4) Seismic capacity of buildings are improving obviously after reinforcement.The buildings do not appear any structural damage while happened three times over 5 magnitude Mianzhu city earthquake.
引文
[1]韩军,李英民,刘立平,郑妮娜,王丽萍,刘建伟.5.12汶川地震绵阳市区房屋震害统计与分析[J].重庆建筑大学学报,2008,30(5):26～33Han Jun,Li Ying-min,Liu Li-ping,Zhang Ni-na,Wang Li-ping,Liu Jian-wei.Building Damage inMianyang City Caused by the May 12,Earthquake inWenchuan,Sichuan Province,P.R.China[J].Journal of Chongqing Jianzhu University,2008,30(5):26～33(in Chinese)
[2]徐有邻.汶川震害的教训-教学楼倒塌的反思[J].建筑结构,2009,(11):50～53Xu You-lin.Lessons from Wenchuan Seismic Damage:Introspection on the Collapse of Classroom Buildings[J].Building Structure,2009,(11):50～53(inChinese)
[3]薛彦涛,黄世敏,姚秋来,等.汶川地震钢筋混凝土框架结构震害及对策[J].工程抗震与加固改造,2009,(5):93～100Xue Yan-tao,Huang Shi-min,Yao Qiu-lai,et al.Seismic Damage and Design Concept from the Buildingsof RC Frame Structure in Wenchuan Earthquake[J].Earthquake Resistant Engineering and Retrofitting,2009,(5):93～100(in Chinese)
[4]马明,彭亚萍.混凝土框架梁柱节点FRP抗震加固研究综述[J].工程抗震与加固改造,2010,(1):93～97Ma Ming,Peng Ya-ping.Research Review on theSeismic Performance of Concrete Frame JointsReinforced with FRP[J].Earthquake ResistantEngineering and Retrofitting,2010,(1):93～97(inChinese)
[5]施楚贤.对砌体结构类型的分析与抗震设计建议[J].建筑结构,2010,40(1):74～76Shi Chu-xian Analysis for Dividing Types of MasonryStructures and Seismic Design Recommendations[J].Building Structure,2010,40(1):74～76(in Chinese)
[6]GBJ11-89,建筑抗震设计规范[S]GBJ11-89,Code for Seismic Design of Building[S](inChinese)
[7]GB50011-2001,建筑抗震设计规范[S]GB 50011-2001,Code for Seismic Design of Building[S](in Chinese)
[8]GB50003-2001,砌体结构设计规范[S]GB50003-2001,Code for Design of Masonry Structures[S](in Chinese)
[9]03SG611,砖混结构加固与修复[S]03SG611,Atlas of Brick-concrete Structure Reinforce-ment and Repair[S](in Chinese)
[10]GB50011-2002,混凝土结构设计规范[S]GB50011-2001,Code for Design of Concrete Structures[S](in Chinese)
[11]JGJ116-98,建筑抗震加固技术规程[S]JGJ116-98,Technical Specification for SeismicStrengthening for Buildings[S](in Chinese)
[12]CECS146:2003,碳纤维片材加固修复混凝土结构技术规程[S]CECS146:2003,Technical Specification forStrengthening Concrete Structures with Carbon FiberReinforce Polymer Laninate[S](in Chinese)
[2]徐有邻.汶川震害的教训-教学楼倒塌的反思[J].建筑结构,2009,(11):50～53Xu You-lin.Lessons from Wenchuan Seismic Damage:Introspection on the Collapse of Classroom Buildings[J].Building Structure,2009,(11):50～53(inChinese)
[3]薛彦涛,黄世敏,姚秋来,等.汶川地震钢筋混凝土框架结构震害及对策[J].工程抗震与加固改造,2009,(5):93～100Xue Yan-tao,Huang Shi-min,Yao Qiu-lai,et al.Seismic Damage and Design Concept from the Buildingsof RC Frame Structure in Wenchuan Earthquake[J].Earthquake Resistant Engineering and Retrofitting,2009,(5):93～100(in Chinese)
[4]马明,彭亚萍.混凝土框架梁柱节点FRP抗震加固研究综述[J].工程抗震与加固改造,2010,(1):93～97Ma Ming,Peng Ya-ping.Research Review on theSeismic Performance of Concrete Frame JointsReinforced with FRP[J].Earthquake ResistantEngineering and Retrofitting,2010,(1):93～97(inChinese)
[5]施楚贤.对砌体结构类型的分析与抗震设计建议[J].建筑结构,2010,40(1):74～76Shi Chu-xian Analysis for Dividing Types of MasonryStructures and Seismic Design Recommendations[J].Building Structure,2010,40(1):74～76(in Chinese)
[6]GBJ11-89,建筑抗震设计规范[S]GBJ11-89,Code for Seismic Design of Building[S](inChinese)
[7]GB50011-2001,建筑抗震设计规范[S]GB 50011-2001,Code for Seismic Design of Building[S](in Chinese)
[8]GB50003-2001,砌体结构设计规范[S]GB50003-2001,Code for Design of Masonry Structures[S](in Chinese)
[9]03SG611,砖混结构加固与修复[S]03SG611,Atlas of Brick-concrete Structure Reinforce-ment and Repair[S](in Chinese)
[10]GB50011-2002,混凝土结构设计规范[S]GB50011-2001,Code for Design of Concrete Structures[S](in Chinese)
[11]JGJ116-98,建筑抗震加固技术规程[S]JGJ116-98,Technical Specification for SeismicStrengthening for Buildings[S](in Chinese)
[12]CECS146:2003,碳纤维片材加固修复混凝土结构技术规程[S]CECS146:2003,Technical Specification forStrengthening Concrete Structures with Carbon FiberReinforce Polymer Laninate[S](in Chinese)
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