异形钢管再生混凝土柱抗震性能有限元研究与影响因素分析  

Finite Element Research on Seismic Performance and Influence Factors of Recycled Concrete Filled Special-shaped Steel Tube Columns

作　　者：黄帮友 朱凯 龚玉云 

机构地区：[1]金寨现代产业园区规划建设环保局,安徽六安237300 [2]中交二公局第六工程有限公司,陕西西安710065 [3]长江大学城市建设学院,湖北荆州434023

出　　处：《长江大学学报（自然科学版）》2017年第9期48-53,共6页Journal of Yangtze University(Natural Science Edition)

基　　金：住房和城乡建设部科技计划项目(2014-K2-021)

摘　　要：为研究T形钢管再生混凝土柱在不同影响因素下的滞回性能,以再生骨料取代率为变化参数,进行了3根试件的有限元模拟分析。基于已建立的模型,进行了轴压比、含钢率及钢材强度为参数的有限元分析。根据模拟得到滞回曲线和骨架曲线,分析了设计参数对位移延性系数、承载力、刚度和耗能能力等抗震指标的影响。研究结果表明,T形钢管再生混凝土柱的滞回曲线较为饱满,从梭形逐步发展到弓形;随着再生骨料取代率的增大,柱的极限承载力和塑性变形能力有所下降,但影响较小;随着轴压比的提高,柱的极限承载力减小,延性变差;随着含钢率的增高,柱的水平承载力和变形能力提高;钢材强度的提高对柱的抗震能力起到有益作用;基于结构滞回性能指标的要求,T形钢管再生混凝土柱可用于实际工程的需要。In order to investigate the seismic performance of recycled concrete recycled concrete filled special-shaped steel tube columns under different influence factors,the recycled coarse aggregate replacement percentage is considered in this paper,and three specimens are designed for finite element analysis.The study results indicate that all hysteretic curves of recycled concrete filled T-shaped steel tube columns are plump,whose shapes change from the early fusiformis to later arches.With the increase of recycled coarse aggregate replacement percentage,the ultimate bearing capacity and plastic deformation capacity are reduced but the effect is less.With the increase of axial ratio,the ultimate bearing capacity and duclity are reduced and durability is poor.With the increase of steel ratio,its horizontal capacity and plastic deformation capacity are increased.With the increase of steel strength,the seismic performance of T-shaped columns become better.Based on the hysteretic performance of structure,the recycled concrete filled T-shaped steel tube columns can be used in practical engineering.

关 键 词：T形钢管再生混凝土柱 抗震性能 变化参数 有限元分析 

分 类 号：TU398.9[建筑科学—结构工程]