GFRP管-螺旋箍筋复合约束RC柱抗震性能分析  

Analysis of Seismic Behavior of GFRP Pipe-Spiral Stirrup Composite Confined Reinforced Concrete Column

作　　者：张云峰[1] 郭道琳 隋如玉 ZHANG Yunfeng;GUO Daolin;SUI Ruyu(School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing 163318,Heilongjiang China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318

出　　处：《河南科学》2021年第3期443-452,共10页Henan Science

基　　金：国家自然科学基金资助项目(51308028)。

摘　　要：为探究GFRP管-螺旋箍筋复合约束钢筋混凝土(RC)柱的抗震性能,以GFRP管厚和轴压比为主要影响参数设计了七根复合约束RC柱,应用有限元模拟软件ABAQUS建立GFRP管-螺旋箍筋复合约束RC柱的数值仿真模型,并与现有试验数据对比验证所建模型的准确度,进一步总结复合约束RC柱在低周反复荷载作用下GFRP管厚和轴压比对抗震性能的影响规律.结果表明:增大GFRP管厚,峰值荷载及其对应位移有所提高,本文工况下GFRP管厚为3 mm时组合柱构件的延性性能最好;提高轴压比对组合柱的极限承载力有明显提升效果,减缓刚度退化速率,但是耗能能力和延性减弱.In order to explore the seismic behavior of GFRP pipe-spiral stirrup composite confined reinforced concrete column,seven specimens were designed in this paper with the GFRP pipe thickness and axial compression ratio as the dominating affection factors.The numerical modeling logiciel ABAQUS was used to establish the computing pattern of RC column.The degree of preciseness of the pattern was validated by the contrast with the available test data,and the influence law of GFRP pipe thickness and axial compression ratio on seismic behavior of composite confined RC column under low cyclic loading was carried out.The consequence indicated that the limit carrying capacity and the corresponding displacement were promoted with the growth of GFRP pipe thickness,and the ductility of composite column was the best when the GFRP pipe thickness was 3 mm.Increasing the axial compression ratio could promote the limit carrying capacity of composite columns and retard the stiffness degeneration rate,but the energy dissipation capacity and ductility decreased obviously.

关 键 词：GFRP管 螺旋箍筋 轴压比 抗震性能 影响规律 

分 类 号：TU375.3[建筑科学—结构工程]