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外包钢套法加固钢筋混凝土框架节点试验研究
引用本文:陆洲导,刘长青,张克纯,王焕杰.外包钢套法加固钢筋混凝土框架节点试验研究[J].四川大学学报(工程科学版),2010,42(3):56-62.
作者姓名:陆洲导  刘长青  张克纯  王焕杰
作者单位:同济大学,结构工程与防灾研究所,上海,200092
基金项目:国家自然科学基金资助项目(50778134); 高等学校博士学科点专项科研基金资助项目(200802471089)
摘    要:在汶川地震中大批框架节点受损破坏,亟需找一种方法对这些节点进行加固修复.为此,设计制作了4个3维钢筋混凝土框架节点进行试验,研究外包钢套法加固震损节点的抗震性能.试验流程为先对框架节点进行预震损,然后进行裂缝修补和外包钢套法加固,最后进行低周反复破坏试验.结果表明,加固后的框架节点由"弱柱强梁"转变为"强柱弱梁"的破坏形式.由对节点的滞回曲线、骨架曲线、延性系数等参数的分析可知:外包钢套法可以显著提高节点刚度,延性等抗震性能.通过外包钢套加固,预震损节点的承载力和抗震性能恢复并超过了节点预震损前的承载力和抗震性能.

关 键 词:地震  损伤  3维框架节点  修复  外包钢套  抗震性能
收稿时间:3/5/2009 12:00:00 AM
修稿时间:2009/4/20 0:00:00

Experimental Study on the Seismic Performance of Enveloped Steel Strengthened RC Frame Joint
Lu ZhouDao,Liu Changqing,Zhang Kechun and Wang Huanjie.Experimental Study on the Seismic Performance of Enveloped Steel Strengthened RC Frame Joint[J].Journal of Sichuan University (Engineering Science Edition),2010,42(3):56-62.
Authors:Lu ZhouDao  Liu Changqing  Zhang Kechun and Wang Huanjie
Affiliation:LU Zhou-dao,LIU Chang-qing,ZHANG Ke-chun,WANG Huan-jie (Research Inst.of Structural Eng., Disaster Reduction,Tongji Univ.,Shanghai 200092,China)
Abstract:A large number of column-beam joints(C-BJ) have been damaged in the Wenchun earthquake.Thereby a proper method is urgently needed for strengthening the damaged joints.This paper presented the experimental study on the seismic behaviors of 4 repaired C-BJs,2 of which had been pre-damaged under cyclic loads.The test procedure included pre-damage,rehabilitation and re-test under cyclic loads.The test results showed that the failure mode of strong beam and weak column changed into strong column and weak beam af...
Keywords:earthquake  damage  3D frame joint  repair  enveloped steel  earthquake resistance  
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