钢筋混凝土框架复合加固法抗震性能试验研究
|
摘要
为研究钢板与碳纤维复合加固法对损伤钢筋混凝土框架的加固效果,设计了三榀框架分别采用钢板加固、碳纤维加固、以及复合加固3种方法对三榀完全相同且达到屈服的损伤框架进行加固,并通过低周反复荷载试验对比分析了加固框架和原框架的抗震性能。试验结果表明:钢板加固混凝土框架可以明显提高框架的承载能力,但是耗能能力较差;碳纤维加固框架具有良好的耗能能力,但是承载能力提高有限;复合加固框架综合了这两种加固框架的优点,既具有承载力较高,又拥有耗能能力好的优点,是一种较为理想的加固方法。
In order to inspect the strengthening effect of damaged RC frame combination rehabilitation with bonded carbon fiber and steel plate,the three same yield damaged RC frames are reinforced by bonded steel plate,CFRP and combination strengthening,and the seismic performance of the three strengthened frames and the un-strengthened one are compared and analyzed after low reversed cyclic loading tests.The test results show that the steel plate strengthening frame′s seisimic bearing capacity is obviously enhanced,but its energy dissipation capability is weaker than the other two strengthened frames;the CFRP strengthening frame's energy dissipation capability is obviously higher than the other two strengthened ones,but its bearing capacity is improved limitedly;the combination strengthening frame's seisimic bearing capacity and energy dissipation capability are both improved more evidently.Thus the combination method is an ideal seisimic strengthening method.
In order to inspect the strengthening effect of damaged RC frame combination rehabilitation with bonded carbon fiber and steel plate,the three same yield damaged RC frames are reinforced by bonded steel plate,CFRP and combination strengthening,and the seismic performance of the three strengthened frames and the un-strengthened one are compared and analyzed after low reversed cyclic loading tests.The test results show that the steel plate strengthening frame′s seisimic bearing capacity is obviously enhanced,but its energy dissipation capability is weaker than the other two strengthened frames;the CFRP strengthening frame's energy dissipation capability is obviously higher than the other two strengthened ones,but its bearing capacity is improved limitedly;the combination strengthening frame's seisimic bearing capacity and energy dissipation capability are both improved more evidently.Thus the combination method is an ideal seisimic strengthening method.
引文
[1]吴波,王维俊.碳纤维布加固钢筋混凝土框架节点的抗震性能试验[J].土木工程学报,2005,38(4):60～64Wu Bo,Wang Wei-jun.An Experimental Study on theSeismic Behavior of Beam-column Joints Strengthenedwith Carbon Fiber Sheets[J].China Civil EngineeringJournal.2005,38(4):60～64,(in Chinese)
[2]王新玲,范建伟,王华.CFRP布加固损伤钢筋混凝土框架的抗震试验研究[J].世界地震工程,2009,25(3):119～123Wang Xin-ling,Fan Jian-wei,Wang Hua.ExperimentalStudy on the Damaged RC Frame Structure Strengthenedwith CFRP under Low-cycle Repeated Load[J].WorldEarthquake Engineering,2009,25(3):119～123(inChinese)
[3]苏湘.纤维布抗剪加固钢筋混凝土框架节点研究[D].西安:长安大学,2008Su Xiang.The Study of the Shear Reinforcement of RCFrame’s Joints by FRP Sheet[D].Xi’an:Chang AnUniversity,2008(in Chinese)
[4]GB50010-2010,混凝土结构设计规范[S]GB50010-2010,Code for Design of Concrete Structures[S](in Chinese)
[5]GB50367-2006,混凝土结构加固设计规范[S]GB50367-2006,Design Code for Strengthening ConcreteStructure[S](in Chinese)
[6]JGJ101-96,建筑抗震试验方法规程[S]JGJ101-96,Specificating of Testing Method forEarthquake Resistant Building[S](in Chinese)
[7]李忠献.工程结构试验理论与技术[M].天津:天津大学出版社,2004Li Zhong-xian.Testing Theory and Technique ofEngineering Structures[M].Tianjin:Tianjin UniversityPress,2004(in Chinese)
[8]GB50011-2010,建筑抗震设计规范[S]GB50011-2010,Code for Seismic Design of Buildings[S](in Chinese)
[2]王新玲,范建伟,王华.CFRP布加固损伤钢筋混凝土框架的抗震试验研究[J].世界地震工程,2009,25(3):119～123Wang Xin-ling,Fan Jian-wei,Wang Hua.ExperimentalStudy on the Damaged RC Frame Structure Strengthenedwith CFRP under Low-cycle Repeated Load[J].WorldEarthquake Engineering,2009,25(3):119～123(inChinese)
[3]苏湘.纤维布抗剪加固钢筋混凝土框架节点研究[D].西安:长安大学,2008Su Xiang.The Study of the Shear Reinforcement of RCFrame’s Joints by FRP Sheet[D].Xi’an:Chang AnUniversity,2008(in Chinese)
[4]GB50010-2010,混凝土结构设计规范[S]GB50010-2010,Code for Design of Concrete Structures[S](in Chinese)
[5]GB50367-2006,混凝土结构加固设计规范[S]GB50367-2006,Design Code for Strengthening ConcreteStructure[S](in Chinese)
[6]JGJ101-96,建筑抗震试验方法规程[S]JGJ101-96,Specificating of Testing Method forEarthquake Resistant Building[S](in Chinese)
[7]李忠献.工程结构试验理论与技术[M].天津:天津大学出版社,2004Li Zhong-xian.Testing Theory and Technique ofEngineering Structures[M].Tianjin:Tianjin UniversityPress,2004(in Chinese)
[8]GB50011-2010,建筑抗震设计规范[S]GB50011-2010,Code for Seismic Design of Buildings[S](in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心