西北工程技术学报2026，Vol.25Issue(1)：33-41,9.DOI:10.26974/j.cnki.XBGC.2026.01.005
拉挤型GFRP管-混凝土-圆钢管双壁空心柱的轴压性能
Axial Compressive Behavior of Pultruded GFRP Tube-Concrete-Steel Tube Double-Skin Hollow Columns
摘要
Abstract
This study investigates the stress mechanism and bearing performance of a novel composite column comprising a pultruded GFRP tube,concrete,and a steel tube.Thirteen composite column specimens were fabricated with varying parameters,including GFRP tube thickness,concrete strength,cross-sectional hollowness ratio,steel tube thickness,number of shear stud layers,and cross-sectional form.Axial compressive tests were conducted to assess the bearing capacity of the composite columns.The results indicate three typical failure modes for the double-skin tube composite(DSTC)specimens.Additionally,increasing the number of shear stud layers enhances the bearing capacity of the DSTC specimens.Based on the test results and the limit equilibrium theory,a bearing capacity calculation formula for the composite column was derived,with the computed results aligning well with the experimental findings.关键词
拉挤型GFRP管-混凝土-圆钢管双壁空心柱/承载力/轴压性能/受力机理/计算模型Key words
pultruded GFRP tube-concrete-steel tube double-walled hollow column/bearing capacity/axial compressive performance/mechanical behavior/computing model分类
建筑与水利引用本文复制引用
弓颢钒,杨文伟,陈志伟,曹一波..拉挤型GFRP管-混凝土-圆钢管双壁空心柱的轴压性能[J].西北工程技术学报,2026,25(1):33-41,9.基金项目
国家自然科学基金项目(52168025) （52168025）
