芯柱式构造柱约束墙体抗震变形能力试验研究
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摘要
芯柱式构造柱可解决现浇构造柱支模难、造价高、工期长等问题。通过11个试件(6个芯柱式构造柱约束墙体、2个现浇构造柱约束墙体、3个素墙体)的低周反复加载试验,对比分析了不同约束条件下墙体的骨架曲线特征、位移延性及位移角,探讨了竖向压应力、高宽比及墙体形式对芯柱式构造柱约束墙体变形能力的影响。试验结果表明,芯柱式构造柱的作用与传统现浇构造柱相近,可通过对墙体的约束增强墙体的整体变形能力。
A new tie-column such as core-column,named as core-tie-column,for the substitution of cast-in-place tie-column was used to improve seismic performance of mansonry structures.Pseudo-static testes of 11 wall specimens including 6 walls constrained by core-tie-columns,2 walls constrained by cast-in-place tie-columns,and 3 walls without constraints were carried out to study the seismic deformation capacity of mansonry walls with core-tie-columns.The skeleton load-displacement curves and the normalized skeleton curves,displacement ductility factors,drift angels of the specimens were analyzed and compared.The effects of the level of vertical compress load,aspect ratio and the wall style on the deformation capacity of the wall with core-tie-columns were distinguished.It is shown that the constraints effects of core-tie-columns on masonry wall are effective and the walls with core-tie-columns have good deformation capacity as those with cast-in-place tie-columns.
A new tie-column such as core-column,named as core-tie-column,for the substitution of cast-in-place tie-column was used to improve seismic performance of mansonry structures.Pseudo-static testes of 11 wall specimens including 6 walls constrained by core-tie-columns,2 walls constrained by cast-in-place tie-columns,and 3 walls without constraints were carried out to study the seismic deformation capacity of mansonry walls with core-tie-columns.The skeleton load-displacement curves and the normalized skeleton curves,displacement ductility factors,drift angels of the specimens were analyzed and compared.The effects of the level of vertical compress load,aspect ratio and the wall style on the deformation capacity of the wall with core-tie-columns were distinguished.It is shown that the constraints effects of core-tie-columns on masonry wall are effective and the walls with core-tie-columns have good deformation capacity as those with cast-in-place tie-columns.
引文
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[11]金伟良,徐铨彪,潘金龙,等.不同构造措施混凝土空心小型砌块墙体的抗侧力性能试验研究[J].建筑结构学报,2001,22(6):64-72.JIN WEI-LIANG,XU QUAN-BIAO,PAN JIN-LONG.Experi mental study on lateral resistancebehavior of small concrete hollow block wall withdifferent constructional measures[J].Journal ofBuilding Structures,2001,22(6):64-72.
[12]杨伟军,陈利群,祝晓庆.混凝土多孔砖墙体抗震性能试验研究[J].工程力学,2008(9):126-133.YANG WEI-JUN,CHEN LI-QUN,ZHU XIAO-QING.Experi mental study on seismic behavior ofconcrete perforated brick walls[J].EngineeringMechanics,2008(9):126-133.
[13]FRANCESCA DA PORTO,MANUEL GRENDENE,CLAUDIO MODENA.Esti mation of load reductionfactors for clay masonry walls[J].Earthquake EngngStruct.Dyn.,2009,38:1155-1174.
[14]周锡元,李万举,闫维明,等.构造柱约束的混凝土小砌块墙体抗震性能的试验研究[J].土木工程学报,2006(8):45-50.ZHOU XI-YUAN,LI WAN-JU,YAN WEI-MING,etal.An experi mental study on the seismic behavior ofsmall concrete block walls confined by tie columns andbeams[J].China Civil Engineering Journal,2006(8):45-50.
[15]朱伯龙,吴明舜,蒋志贤.砖墙用钢筋网水泥砂浆面层加固的抗震能力研究[J].地震工程与工程振动,1984(3):70-81.ZHU BO-LONG,WU MING-SHUN,JIANG ZHI-XIAN.A study on aseismic capacity of brick wallstrengthened with cement mortar reinforced with steelmesh[J].Earthquake Engineering and EngineeringVibration,1984(3):70-81.
[2]朱伯龙,蒋志贤,吴明舜.外加钢筋混凝土柱提高砖混房屋抗震能力的研究[J].同济大学学报,1983(1):31-43.ZHU BO-LONG,JIANG ZHI-XIAN WU MING-SHUN.Astudy on aseismic capacity of brick masonrybuildings strengthened with reinforced concretecolumns[J].Journal of Tongji University,1983(1):31-43.
[3]李英民,刘立平.汶川地震建筑震害与思考[M].重庆:重庆大学出版社,2008:6.
[4]刘晓峰,蔡贤辉,程耿东.砌体结构震害及农村房屋加固的锚固拉结方法[J].大连理工大学学报,2009,49(5):631-638.LI U XIAO-FENG,CAI XIAN-HUI,CHENG GENG-DONG.Earthquake damage of masonry buildings andanchorage-tie strengthening method for rural houses[J].Journal of Dalian University of Technology,2009,49(5):631-638.
[5]DOGANGU N A,UUAL A,LIVAOGLU R.Seismicperformance of masonry buildings during recentearthquakes in turkey[C]//14th World Conference onEarthquake Engineering,October 12-17,2008,Beijing,China.
[6]李英民,刘立平,郑妮娜,等.村镇建筑实用抗震技术[M].重庆:重庆大学出版社,2009:47.
[7]重庆大学.一种用于砌体结构的构造柱以及其专用预制块:中国,200820100863.6[P].2009-9-16.
[8]MI HA TOMAZEVIC,IZTOK KLEMENC.Seismicbehaviour of confined masonry walls[J].EarthquakeEngineering and Structural Dynamics,1997(26):1059-1071.
[9]YANG WEIJUN,LIU CHENGWEI,YIN MINGJUAN.Experi mental research on seismic behavior of concretebrick wall[C]//Niu Ditao,Ru Jiping.The 8thInternational Symposium on Structural Engineering forYoung Experts.Beijing:Science Press,2004:1011-1016.
[10]SHEDID MT,DRYSDALE R G,El-dakhakhni W W.Ductility of reinforced concrete masonry shear wallsunder seismic loading[C]//14th World Conference OnEarthquake Engineering,October 12-17,2008,Beijing,China.
[11]金伟良,徐铨彪,潘金龙,等.不同构造措施混凝土空心小型砌块墙体的抗侧力性能试验研究[J].建筑结构学报,2001,22(6):64-72.JIN WEI-LIANG,XU QUAN-BIAO,PAN JIN-LONG.Experi mental study on lateral resistancebehavior of small concrete hollow block wall withdifferent constructional measures[J].Journal ofBuilding Structures,2001,22(6):64-72.
[12]杨伟军,陈利群,祝晓庆.混凝土多孔砖墙体抗震性能试验研究[J].工程力学,2008(9):126-133.YANG WEI-JUN,CHEN LI-QUN,ZHU XIAO-QING.Experi mental study on seismic behavior ofconcrete perforated brick walls[J].EngineeringMechanics,2008(9):126-133.
[13]FRANCESCA DA PORTO,MANUEL GRENDENE,CLAUDIO MODENA.Esti mation of load reductionfactors for clay masonry walls[J].Earthquake EngngStruct.Dyn.,2009,38:1155-1174.
[14]周锡元,李万举,闫维明,等.构造柱约束的混凝土小砌块墙体抗震性能的试验研究[J].土木工程学报,2006(8):45-50.ZHOU XI-YUAN,LI WAN-JU,YAN WEI-MING,etal.An experi mental study on the seismic behavior ofsmall concrete block walls confined by tie columns andbeams[J].China Civil Engineering Journal,2006(8):45-50.
[15]朱伯龙,吴明舜,蒋志贤.砖墙用钢筋网水泥砂浆面层加固的抗震能力研究[J].地震工程与工程振动,1984(3):70-81.ZHU BO-LONG,WU MING-SHUN,JIANG ZHI-XIAN.A study on aseismic capacity of brick wallstrengthened with cement mortar reinforced with steelmesh[J].Earthquake Engineering and EngineeringVibration,1984(3):70-81.
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