碳纤维布加固震损SRC柱抗震性能有限元分析  

Finite element analysis of CFRP strengthened seismic-damaged SRC columns

作　　者：孙艳[1] 杨建明[1] 许成祥[1,2] 卢梦潇 

机构地区：[1]武汉科技大学城市建设学院,湖北武汉430065 [2]长江大学城市建设学院,湖北荆州434023

出　　处：《广西大学学报（自然科学版）》2017年第1期18-27,共10页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(51478048);湖北省自然科学基金(创新群体)资助项目(2015CFA029)

摘　　要：为了深入研究碳纤维布加固震损型钢混凝土(SRC)柱的抗震性能,基于试验研究,采用材料性能折减的方法考虑震损的影响,应用有限元分析软件ABAQUS对碳纤维布加固震损型钢混凝土柱的抗震性能进行模拟计算,计算结果与试验结果吻合良好。通过数值计算,分析了轴压比、碳纤维布加固量和地震损伤程度对加固效果的影响。分析表明,采用材料性能折减的方法是考虑震损对构件性能影响的一种有效可行方法;在轴压比0.2~0.5范围内,轴压比增加使型钢混凝土柱的极限位移减小;在碳纤维布加固层数1~3范围内,碳纤维布层数增加能提高型钢混凝土柱的极限承载力和极限位移;地震损伤程度达到0.6时,加固修复型钢混凝土柱抗震能力未能恢复至原构件。In order to study the seismic behavior of Steel Reinforced Concrete （ SRC ） columns strengthened with Carbon Fiber Reinforced Polymer （ CFRP） sheets, the influence of seismic damage was considered by reducing material properties,and the seismic behavior of SRC columns strengthened with CFRP sheets was simulated by using the finite element analysis software ABAQUS based on experiments. The calculated results are in good agreement with the experimental results. Through numerical calculation,the axial compression ratio, the amount of CFRP sheets and the seismic damage level on the reinforcement effect were analyzed. The analysis shows that it is an effective and feasible method to consider the influence of the seismic damage on the performance of the components by reducing material properties. When the axial compression ratio was within the scope of 0. 2 -0. 5,its increase reduces the ultimate displacement of SRC columns. When the column was strengthened with CFRP sheets from 1 to 3 layers,the increase of the layers can improve the ultimate bearing capacity and the limit displacement of the SRC columns. The rehabilitatedcolumns failed to recover their full seismic strength on a damage level of 0. 6.

关 键 词：型钢混凝土(SRC)柱 地震损伤 碳纤维布加固 有限元分析 抗震性能 

分 类 号：TU398[建筑科学—结构工程]