带有施工缝钢筋混凝土框架柱抗震性能试验研究
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摘要
近年来地震灾害频发,居民住宅的抗震性能越来越得到重视.通过对灾区房屋安全性评估和震损情况调查发现大量框架结构建筑的倒塌有共同的现象:框架柱柱顶施工缝位置破坏更为突出.实际施工中有很多施工单位不严格按照规范规定的施工缝处理方法施工,由此对框架柱抗震性能的影响需要试验研究.本文介绍了9根试件进行低周反复试验,分析试验现象和实验数据得到试件的滞回曲线、位移延性系数、粘滞阻尼系数等抗震性能指标.试验结果表明:在中低轴压比下,应该对框架柱留置的施工缝按规范进行严格处理;在高轴压比下,可以不对施工缝进行严格处理.
In recent years,earthquake disasters Frequently occurred,earthquake resistant capability of residential buildings have been paid more and more attention.Through the Post-seismic Damage Assessment of thebuildings in disaster area,we found that a large number of collapse of frame structure buildings have common phenomenon that the damage of construction joints of frame column capitals is more prominent.In the actual construction many construction units do construct unstrictly according to the construction standard of treatment method of construction joint,the influence of the way to the frame column of seismic performance need experimental study.This paper introducts the test of 9 test columns under low cyclic static loading,analysis the experimental phenomena and experimental data,and gain specimens of seismic performance index,such as hysteresis curve,displacement ductility,viscous damping coefficient.the test result show that in the middle and low axial compression ratio should construct strictly according to the construction standard of treatment method of construction joint,and in the high axial compression ratio could construct unstrictly.
In recent years,earthquake disasters Frequently occurred,earthquake resistant capability of residential buildings have been paid more and more attention.Through the Post-seismic Damage Assessment of thebuildings in disaster area,we found that a large number of collapse of frame structure buildings have common phenomenon that the damage of construction joints of frame column capitals is more prominent.In the actual construction many construction units do construct unstrictly according to the construction standard of treatment method of construction joint,the influence of the way to the frame column of seismic performance need experimental study.This paper introducts the test of 9 test columns under low cyclic static loading,analysis the experimental phenomena and experimental data,and gain specimens of seismic performance index,such as hysteresis curve,displacement ductility,viscous damping coefficient.the test result show that in the middle and low axial compression ratio should construct strictly according to the construction standard of treatment method of construction joint,and in the high axial compression ratio could construct unstrictly.
引文
[1]孙治国,王东升,李宏男,等.汶川地震钢筋混凝土框架震害及震后修复建议[J].自然灾害学报,2010,19(4):114-123.
[2]GJ-101-96,建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.
[3]刘春阳,李振宝,马华,等.钢筋混凝土框架空间节点抗震性能试验研究[J].工业建筑,2011(6):67-70.
[4]李刚,傅仕磊,林巍.FRP加固混凝土柱的位移延性系数研究[J].低温建筑技术,2011(3):43-45.
[5]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.
[6]程浩德,房贞政.基于震害指数的预应力混凝土扁梁框架节点抗震性能评估[J].福州大学学报:自然科学版,2011,39(2):260-265.
[7]王作虎,杜修力,詹界东.低周反复荷载下预应力FRP筋混凝土梁的抗震性能试验研究[C]//崔京浩.第19届全国结构工程学术会议论文集(第Ⅲ册).北京:工程力学杂志社,2010:164-170.
[2]GJ-101-96,建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1997.
[3]刘春阳,李振宝,马华,等.钢筋混凝土框架空间节点抗震性能试验研究[J].工业建筑,2011(6):67-70.
[4]李刚,傅仕磊,林巍.FRP加固混凝土柱的位移延性系数研究[J].低温建筑技术,2011(3):43-45.
[5]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.
[6]程浩德,房贞政.基于震害指数的预应力混凝土扁梁框架节点抗震性能评估[J].福州大学学报:自然科学版,2011,39(2):260-265.
[7]王作虎,杜修力,詹界东.低周反复荷载下预应力FRP筋混凝土梁的抗震性能试验研究[C]//崔京浩.第19届全国结构工程学术会议论文集(第Ⅲ册).北京:工程力学杂志社,2010:164-170.
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