砌体墙的面内受弯损坏形态及其抗震优势实例剖析
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摘要
根据震害考察及试验现象研究,发现一些砌体墙的正截面受弯损坏形态,呈现出抗震性能好、受拉裂缝可逆和损坏后易修等特点,对砌体抗震墙平面内弯曲损坏形态的特点与剪切破坏进行了比较,剖析了弯曲型损坏在抗震性能、易修复性方面的优势;对砌体房屋、砌体构筑物、古建砖结构的承重墙体以及混凝土框架砌体填充墙的受弯开裂损坏形态进行了地震实例分析;对承重砌体墙的弯曲破坏形态进行了试验实例分析。研究指出,倡导砌体墙的弯曲型开裂是实现砌体结构高效防震防灾的一个重要途径,加强受弯开裂型式及剪切控制技术的创新研究,具有重要理论和应用意义。
Flexural destruction configuration on normal section of masonry wall is found during investigation of earthquakes disaster or experiment phenomena,which shows that seismic properties are outstanding,and tensile cracks are reversible and walls are easily repaired.Characteristics of shear failure are compared with those of flexural destruction,and advantages of flexural destruction over shear failure in respects of seismic properties and repairing feasibility are analyzed.Furthermore,flexural destruction configuration of masonry building walls,masonry special structure walls,ancient brick structure walls and masonry infilled walls in frame is demonstrated by way of representative earthquake examples together with experimental examples.It is pointed out that advocating flexural type of destruction is important approaches for masonry buildings to achieve protecting against and mitigating earthquake disasters,and that strengthening further innovative researches on flexural destruction configuration and shear failure control technology exhibits much theoretical and applied significance.
Flexural destruction configuration on normal section of masonry wall is found during investigation of earthquakes disaster or experiment phenomena,which shows that seismic properties are outstanding,and tensile cracks are reversible and walls are easily repaired.Characteristics of shear failure are compared with those of flexural destruction,and advantages of flexural destruction over shear failure in respects of seismic properties and repairing feasibility are analyzed.Furthermore,flexural destruction configuration of masonry building walls,masonry special structure walls,ancient brick structure walls and masonry infilled walls in frame is demonstrated by way of representative earthquake examples together with experimental examples.It is pointed out that advocating flexural type of destruction is important approaches for masonry buildings to achieve protecting against and mitigating earthquake disasters,and that strengthening further innovative researches on flexural destruction configuration and shear failure control technology exhibits much theoretical and applied significance.
引文
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[2]中华人民共和国住房和城乡建设部.2007年城市、县城和村镇建设统计公报[EB.]www.cin.gov.cn/hytj/jshytjgb/200806/t20080624_173507.htm,2008
[3]张文芳,程文瀼,李爱群.地震倾覆力矩对多层砌体结构墙体的影响[J.]建筑结构,1998(9):8-11(ZhangWenfang,Cheng Wenrang,Li Aiqun.The impact ofseismic overturning moment on multi-storey masonry walls[J.]Building Structures,1998(9):8-11(in Chinese))
[4]中国建筑科学研究院.2008年汶川地震建筑震害图片集[M.]北京:中国建筑工业出版社,2001(ChinaAcademy of Building Research.Photo collection of 2008wenchuan earthquake damage tobuildings[M.]Beijing:ChinaArchitecture&Building Press,2008(in Chinese))
[5]张文芳.多层砖房基础滑移隔震的试验、理论分析和应用研究[D].南京:东南大学,1999(Zhang Wenfang.Reserch of experiment,theory and application on basesliding isolation for multi-Storey masonry buildings[D].Nanjing:Southeast University,1999(in Chinese))
[6]郝彤,刘立新,王仁义.混凝土多孔砖墙体抗震性能试验研究[C]//全国砌体结构基本理论与工程应用学术会议论文集.长沙,2007:240-244
[7]The Masonry Society,American Concrete Institute,StructuralEngineering Institute of ASCE.TMS 402-05/ACI 530-05/ASCE 5-05 Building code requirements for masonrystructures[S].Boulder:The Masonry Standards JointCommittee(MSJC),2005
[8]The Masonry Society,American Concrete Institute,StructuralEngineering Institute of ASCE.TMS 602-05/ACI 530.1-05/ASCE 6-05 Specification for masonry structures[S].Boulder:The Masonry Standards Joint Committee,2005
[9]周云,伍圣喜,吴从晓.近年地震中砌体房屋的震害分析和设计建议[C/]/全国砌体结构基本理论与工程应用学术会议论文集.长沙,2007:257-260
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