注胶加固震损混凝土框架模型振动台试验研究
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摘要
为了研究注胶加固技术的有效性,采用数种地震波形,对一栋双跨8层混凝土框架缩尺模型(缩比为1:4)进行了模拟多种烈度地震振动台预震损试验,框架模型损坏后采用注胶加同技术修复框架震损裂缝,然后对框架模型进行相同的模拟多种烈度地震振动台试验。比较混凝土框架模型在注胶加固前后的抗震性能,研究了框架模型的自振特性以及在不同地震烈度下的楼层刚度。试验结果显示,经过注胶加固后的混凝土框架模型具有良好的抗震性能,表明注胶加同技术可以有效地修复震损后的混凝土框架结构。
In order to investigate the effect of epoxy injection technique,a 1/4 scale two-bay eight-storey RC frame model that had been pre-damaged with the test on the shaking table was tested again on the shaking table after being retrofitted by the epoxy injection technique to study and contrast the seismic performance of the model structure.The dynamic characteristics of the structure and its story lateral stiffness under different earthquake intensities were analyzed. Test and analysis results showed that the RC frame retrofitted by epoxy injection technique was possessed of good earthquake resistance,showing that epoxy injection is an adequate method for retrofitting earthquake-damaged structures.
In order to investigate the effect of epoxy injection technique,a 1/4 scale two-bay eight-storey RC frame model that had been pre-damaged with the test on the shaking table was tested again on the shaking table after being retrofitted by the epoxy injection technique to study and contrast the seismic performance of the model structure.The dynamic characteristics of the structure and its story lateral stiffness under different earthquake intensities were analyzed. Test and analysis results showed that the RC frame retrofitted by epoxy injection technique was possessed of good earthquake resistance,showing that epoxy injection is an adequate method for retrofitting earthquake-damaged structures.
引文
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[3]ACl Committee 503.Use of epoxy compounds with concrete.American Concrete Institute Journal Proceedings;1973
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[8]GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社
[9]JGJ 3-2002高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社
[2]王亚勇.汶川地震建筑震害启示:抗震概念设计[J].建筑结构学报,2008,29(4):20-25
[3]ACl Committee 503.Use of epoxy compounds with concrete.American Concrete Institute Journal Proceedings;1973
[4]谢献忠,易伟建,陈文新.钢筋混凝土框架结构模型动力识别试验研究[J].工程力学,2009,26(7):170-175
[5]李国强,李杰.工程结构动力检测理论与应用.北京:科学出版社,2002
[6]吕西林.复杂高层建筑结构抗震理论与应用.北京:科学出版社,2007
[7]Roy R.Craig,Jr.结构动力学.北京:人民交通出版社,1996
[8]GB 50011-2001建筑抗震设计规范[S].北京:中国建筑工业出版社
[9]JGJ 3-2002高层建筑混凝土结构技术规程[S].北京:中国建筑工业出版社
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