Abstract

The present investigation examines the structural performance of repaired recycled aggregate concrete columns reinforced with GFRP bars and spirals. Six samples were longitudinally and transversely reinforced with GFRP bars and GFRP spirals while other six samples were longitudinally and transversely reinforced with steel bars steel spirals. The effects of concentric compression, eccentric compression, the pitch of spirals, CFRP wrapping, steel reinforcement, and GFRP reinforcement on the axial strength, load-deflection response, axial deflection, strength index, stiffness index, ductility index, and failure modes of samples were investigated. The results depicted that the repaired columns portrayed a significant improvement in their structural performance.

摘要

目前的调查检查了用 GFRP 钢筋和螺旋钢筋修复的再生骨料混凝土柱的结构性能。六个样品纵向和横向用GFRP筋和GFRP螺旋钢筋，而其他六个样品纵向和横向用钢筋螺旋钢筋。同心压缩、偏心压缩、螺距、CFRP缠绕、钢筋、GFRP筋对试件轴向强度、荷载-挠度响应、轴向挠度、强度指标、刚度指标、延性指标和破坏模式的影响被调查。结果表明，修复后的柱子的结构性能有了显着改善。