预制式构造柱约束墙体抗震性能试验研究
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摘要
基于村镇砌体结构房屋的造价水平及施工条件,提出了2种预制式构造柱技术。进行了5个预制式构造柱约束墙体试件(3个预制式构造柱1约束墙和2个预制式构造柱2约束墙)的低周反复加载试验。对比分析了两种预制式构造柱与现浇构造柱在改善墙体破坏特征、滞回耗能特性、变形能力及刚度退化特征等方面的作用。试验结果表明,两种预制式构造柱可使墙体的裂缝发展更充分,能够提高墙体的耗能能力及变形能力,对刚度退化特征的影响不大。作为经济实用的构造柱技术,可在村镇建筑中使用。
Two kinds of precast tie-columns were put forward for masonry structural buildings in rural areas according to the economic background and constructional abilities of rural buildings.Pseudo-static tests of five masonry walls,of which three wall specimens were constrained by precast tie-columns 1 and two wall specimens were constrained by pre-cast tie-columns 2,were carried out.The seismic performance,including failure feature,dissipation capacity,deformation capacity and stiffness degradation,were investigated and distinguished.The results show that,the failure cracks develop more fully than walls without any constraints.The plastic energy dissipation capacity and deformation capacity can be improved by two kinds of precast tie-columns,and the features of stiffness degradation are similar as walls without constraints.The two kinds of precast tie-columns can be used in masonry buildings in rural areas for economic and practice.
Two kinds of precast tie-columns were put forward for masonry structural buildings in rural areas according to the economic background and constructional abilities of rural buildings.Pseudo-static tests of five masonry walls,of which three wall specimens were constrained by precast tie-columns 1 and two wall specimens were constrained by pre-cast tie-columns 2,were carried out.The seismic performance,including failure feature,dissipation capacity,deformation capacity and stiffness degradation,were investigated and distinguished.The results show that,the failure cracks develop more fully than walls without any constraints.The plastic energy dissipation capacity and deformation capacity can be improved by two kinds of precast tie-columns,and the features of stiffness degradation are similar as walls without constraints.The two kinds of precast tie-columns can be used in masonry buildings in rural areas for economic and practice.
引文
[1]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.
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[2]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.
[3]周炳章.用钢筋混凝土构造柱提高砖混结构抗震性能的试验研究及设计计算[C]//中国建筑学会地震学术委员会地震工程论文集.北京:科学出版社,1982.
[4]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,2006,39(8):45-50.
[5]SHEDID M T,DRYSDALE R G,EL-DAKHAKHNI WW.Ductility of reinforced concrete masonry shear wallsunder seismic loading[C]//14th World Conference onEarthquake Engineering,2008.
[6]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.
[7]DO GˇANGN A,URAL A,LIVAO GˇLU R.Seismicperformance of masonry buildings during recentearthquakes in turkey[C]//14th World Conference onEarthquake Engineering,2008.
[8]郑妮娜.装配式构造柱约束砌体抗震性能研究[D].重庆:重庆大学,2010.
[9]JGJ101—96建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.
[10]夏敬谦,吴明舜,周炳章.砌体构件抗震性能研究[C]//中国工程抗震研究四十年.北京:地震出版社,1989.
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