南昌大学学报（工科版）
南昌大學學報（工科版）
남창대학학보（공과판）
JOURNAL OF NANCHANG UNIVERSITY ENGINEERING & TECHNOLOGY EDITION
2015年
1期
20-26
,共7页
框架节点%自密实混凝土%加固%二次受力%恢复力模型
框架節點%自密實混凝土%加固%二次受力%恢複力模型
광가절점%자밀실혼응토%가고%이차수력%회복력모형
frame joints%self-compacting concrete%strengthen%secondary load%restoring force models
基于10个足尺自密实混凝土加固框架节点的拟静力试验结果，分析了不同初始受力、不同初始轴压比及不同界面处理方式的加固节点的滞回特性。考虑刚度退化的影响，提出自密实混凝土加固框架节点的三线型恢复力模型，并给出了恢复力模型的表达式。结合试验结果，对恢复力模型的有效性进行了验证。结果表明，增大截面法加固框架节点的抗震性能相对于对比构件有明显的提高，所建立的恢复力模型骨架曲线与试验值吻合较好，此模型可用于自密实混凝土框架加固节点的弹塑性动力反应分析及其节点的抗震加固设计。
基于10箇足呎自密實混凝土加固框架節點的擬靜力試驗結果，分析瞭不同初始受力、不同初始軸壓比及不同界麵處理方式的加固節點的滯迴特性。攷慮剛度退化的影響，提齣自密實混凝土加固框架節點的三線型恢複力模型，併給齣瞭恢複力模型的錶達式。結閤試驗結果，對恢複力模型的有效性進行瞭驗證。結果錶明，增大截麵法加固框架節點的抗震性能相對于對比構件有明顯的提高，所建立的恢複力模型骨架麯線與試驗值吻閤較好，此模型可用于自密實混凝土框架加固節點的彈塑性動力反應分析及其節點的抗震加固設計。
기우10개족척자밀실혼응토가고광가절점적의정력시험결과，분석료불동초시수력、불동초시축압비급불동계면처리방식적가고절점적체회특성。고필강도퇴화적영향，제출자밀실혼응토가고광가절점적삼선형회복력모형，병급출료회복력모형적표체식。결합시험결과，대회복력모형적유효성진행료험증。결과표명，증대절면법가고광가절점적항진성능상대우대비구건유명현적제고，소건립적회복력모형골가곡선여시험치문합교호，차모형가용우자밀실혼응토광가가고절점적탄소성동력반응분석급기절점적항진가고설계。
Based on the quasi-static test results of 10 full-scale frame joints strengthened by self-compacting concrete,the hysteretic behavior of strengthened joints under different initial force,different initial axial compression ratio and different interface treatments were investigated. Considering the stiffness degradation,the tri-linear resto-ring force model of frame joints strengthened by self-compacting concrete was proposed,and the expression of resto-ring force model was given. Combined with the test results,the effectiveness of the restoring force model was valida-ted. The results showed that the seismic performance of the frame joints strengthened by self-compacting concrete was more effective. The skeleton curve of proposed restoring force model was very close to the experimental values, and this model can be use to analyze the elastic-plastic dynamic response of frame joints strengthened by self-com-pacting concrete and the seismic strengthening design.
