增大截面法加固低配箍率钢筋混凝土柱抗震性能试验研究  

Experimental Study on Seismic Behavior of Low Stirrup Ratio RC Columns by Enlarging Section

作　　者：陆超超 王铁成[1,2] 赵海龙[1,2] 白锡庆[1] 

机构地区：[1]天津大学建筑工程学院,天津300072 [2]滨海土木工程结构与安全教育部重点试验室,天津大学,天津300072

出　　处：《工程抗震与加固改造》2015年第6期23-30,共8页Earthquake Resistant Engineering and Retrofitting

摘　　要：为研究低配箍率钢筋混凝土框架柱采用增大截面法加固后的抗震性能,本文结合某实际加固工程,按照1/2缩尺制作6根钢筋混凝土柱,1根为未加固对比柱,另外5根采用不同增大截面形式加固,对所有试件进行低周往复试验。重点研究不同增大截面加固形式对柱的破坏形态、滞回性能、水平承载力、延性变形能力、刚度、耗能等抗震性能的影响。研究结果表明,不同增大截面加固形式能不同程度地改善低配箍率钢筋混凝土柱的多项抗震性能,其中一些增大截面形式是比较有效的加固方法。Six frame columns with 1 /2 scale are designed and produced to study the seismic behavior of low stirrup ratio RC columns by enlarging section according to a practical strengthening engineering. One model is prototype control column,and other five are strengthened by different enlarging sections. The low-cycle and repeated load is imposed on these columns until they were broken. The research focuses on the seismic behavior such as failure mode, hysteretic behavior, lateral capacity, ductile and deformable performance,stiffness,energy dissipation of the retrofitting column with different section enlargement methods. It＇s indicated that different enlarging sections improve the seismic behavior in varying degrees from the experimental results.

关 键 词：增大截面法 低配箍率 框架柱 抗震性能 

分 类 号：TU352.11[建筑科学—结构工程] TU375.3