作　　者： (高鹏）; (彭飞）; (丁磊）; (吴宜龙）; (童林）;

机构地区： 合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处： 《工程抗震与加固改造》 2017年第3期30-36,共7页

摘　　要： 对4个不同高宽比的碳纤维布约束型钢混凝土短柱进行轴压试验,结果表明构件高宽比越大,加固后变形能力增长越好。随后在数值模拟基础上,对更大参数范围的约束型钢混凝土柱和钢筋混凝土柱做比较分析,发现对截面高宽比小的柱实施约束加固易获得承载力加固效果,而对大高宽比柱则易获得延性加固效果;且在高宽比大于2.0的情况下,约束型钢混凝土柱比钢筋混凝土柱仍具有较好加固效果,碳纤维布有良好的应变发挥,组合柱截面内存在混凝土有效约束区。 Four steel reinforced concrete （SRC） rectangular short columns with different aspect ratio of cross sections are confined by carbon fiber reinforced polymer （CFRP） , and then they are conducted to the axial compressive experiment, whose results indicates that the ductility of specimen increases with the aspect ratio. Then the finite element method is used to compare and analyze the compressive behavior of CFRP-confined SRC columns and CFRP-confined RC columns with the parameter of aspect ratio. It reveales that strength rehabilitation could be easily obtained for specimen with lower sectional aspect ratio, while ductility rehabilitation could be easily got ten for specimen with higher aspect ratio. When the aspect ratio is more than 2.0, confined SRC columns still show better strength increment compared with confined RC columns, in which CFRP has high working strain and the effective confined concrete area still exists in column section.

关 键 词： 约束 型钢混凝土柱 高宽比 轴压性能