钢管-GFRP管-混凝土柱抗震性能的研究  

Research on Seismic Behavior of Steel-GFRP-Concrete Columns

作　　者：仓友清[1] 查晓雄[1] 王晓璐[1] 

机构地区：[1]哈尔滨工业大学深圳研究生院,广东深圳518055

出　　处：《建筑钢结构进展》2011年第1期43-48,共6页Progress in Steel Building Structures

摘　　要：本文主要研究了钢管-GFRP管-混凝土柱在定轴力和往复水平力作用下的抗震性能。基于有限元分析软件ABAQUS对该构件的滞回性能进行了分析,得到了不同影响因素下骨架曲线形状的变化规律。研究表明,加入FRP管会降低原钢管混凝土构件的延性。当轴压比较大、长细比较小时,FRP管的脆性破坏会造成骨架曲线形状的突变。若对轴压比和长细比进行适当控制,则该构件仍能够满足延性的要求。最后对已有的实心或空心钢管混凝土压弯构件恢复力模型进行了修正,得到了适合本文构件的恢复力简化模型。This paper mainly studied on the seismic performance of steel-GFRP-concrete components under fixed axial force and cyclic horizontal load. The hysteretic behavior of the proposed component is studied based on FEA software ABAQUS. The variation law of the skeleton curve is obtained with the related parameters. The results show that FRP tube can reduce the ductility of the component; the skeleton curve will change suddenly when FRP tube fractures in the case of high axial compression ratio and low slenderness ratio. However,the ductility property can still meet the requirements in most cases. Finally the existing restoring force model of solid and hollow CFST is revised to satisfy the proposed component.

关 键 词：钢管-GFRP管-混凝土柱 骨架曲线 恢复力模型 有限元分析 延性 

分 类 号：TU352.5[建筑科学—结构工程]