摘要
为研究圆形钢套管加固混凝土柱的基本力学性能,进行了1根未加固的普通钢筋混凝土柱和10根圆形钢套管加固的混凝土短柱在不同加固钢套管厚度及初始轴压比下轴心受压试验,初始轴力通过对未加固试件施加后张预应力来进行模拟;在试验研究的基础上,根据应变协调原则对加固后构件轴压承载力进行了数值分析.研究结果表明,加固构件的承载力随着钢套管厚度的增加而增加,初始轴压比的变化对加固后构件的承载力影响不显著,且理论分析结果与试验结果吻合较好.
To study the basic mechanical performance of reinforced concrete column strengthened by circular steel jacket, a set of experimental work was carried out. 1 contrast unstrengthened square reinforced concrete column and 10 reinforced concrete columns strengthened by circular steel jacket were tested under axial loading. The primary parameters of the strengthened columns are original axial load ratio and steel jacket thickness. Post prestressing force was supplied to the columns before they were strengthened to analogue the original axial load. Based on the experimental research, the axial beating capacity of the strengthened columns is analyzed numerically according to deformation compatibility. The results show that the axial beating capacity increases with the increase of the steel jacketing thickness, and the original axial pressure ratio has no obvious effects on the axial bearing capacity. The numerical results agree well with the experimental results.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第4期580-584,共5页
Journal of Southeast University：Natural Science Edition
基金
广东省自然科学基金资助项目(990565
020965)
关键词
加固
圆形钢套管
混凝土柱
轴压
retrofitting
circular steel jacketing
reinforced concrete column
axial loading
