摘要
为考察后置混凝土翼墙加固框架角柱的抗震性能,设计制作了6个在相邻两侧面后置混凝土翼墙的试件.这6个在役框架角柱加固前试验轴压比分为0.31、0.36、0.40三档,纵筋采用HRB400钢筋,纵筋配筋率分为1.23%、1.05%、0.82%三档;箍筋采用HPB300钢筋,箍筋配箍率为0.6%.对这6个试件进行低周反复荷载试验,发现加固后的试件平行于受力方向翼墙在远离角柱一侧损伤严重,而角柱和垂直于受力方向翼墙损伤较轻,达到了加固后原柱同时承受竖向荷载和水平地震作用,翼墙以抵御水平地震作用为主并作为耗能元件有效耗能的目的.
6 specimens of post-build concrete wing wall located two neighboring faces of corner columns were designed and conducted to study the seismic performance of the post-build concrete wing wall reinforce frame corner column. Three test axial compression ratio including 0.31, 0.36, 0.40 was designated for exiting frame corner columns. HRB400 was used as longitudinal steel bar. The ratio of longitudinal reinforcement was 1.23%, 1.05%, 0.82% and stirrup with HPB300 ratio 0.6%. The results of six specimens under cyclic reversing load show that damage degree of the parallel wing wall away from the corner column was significant, while the corner column and the perpendicular wing wall were damaged lighter. Existing column could resist vertical loads and horizontal seismic actions. The wing walls could bear horizontal seismic action and as an effective dissipation energy component.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2015年第12期21-25,共5页
Journal of Harbin Institute of Technology
基金
国家教育部长江学者奖励计划(2009-37)
哈尔滨工业大学"985工程"优秀科技创新团队建设项目(2011)
黑龙江省科技推广项目(TC10A0101)
黑龙江省教育厅项目(12535047)
关键词
混凝土框架角柱
轴压比
后置翼墙
抗震加固
耗能
concrete frame corner column
axial compression ratio
post-build wing wall
anti-seismic reinforce
energy consumption
