拉挤型GFRP管-混凝土-圆钢管双壁空心柱的轴压性能OA
Axial Compressive Behavior of Pultruded GFRP Tube-Concrete-Steel Tube Double-Skin Hollow Columns
为探究拉挤型玻璃纤维增强聚合物(GFRP)管-混凝土-圆钢管双壁空心柱的受力机理及其承载性能,以GFRP 管厚度、混凝土强度、截面空心率、钢管厚度、抗滑栓钉层数及截面形式为参数制作了 13 根组合柱试件,并对该新型柱进行了轴压承载力试验.结果表明,该空心组合柱存在三种典型的破坏形态,GFRP 管厚度和混凝土强度对构件的轴压性能影响显著,抗滑栓钉层数的增加有利于提升空心组合柱的承载力.结合组合柱的试验结果并基于极限平衡理论,推导出了该组合柱的承载力计算公式,承载力模型计算结果与试验结果吻合较好.
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.
弓颢钒;杨文伟;陈志伟;曹一波
宁夏大学 土木与水利工程学院,宁夏 银川 750021||宁夏土木工程防震减灾工程技术研究中心,宁夏 银川 750021宁夏大学 土木与水利工程学院,宁夏 银川 750021||宁夏土木工程防震减灾工程技术研究中心,宁夏 银川 750021宁夏大学 土木与水利工程学院,宁夏 银川 750021||宁夏土木工程防震减灾工程技术研究中心,宁夏 银川 750021宁夏大学 土木与水利工程学院,宁夏 银川 750021||宁夏土木工程防震减灾工程技术研究中心,宁夏 银川 750021
建筑与水利
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
pultruded GFRP tube-concrete-steel tube double-walled hollow columnbearing capacityaxial compressive performancemechanical behaviorcomputing model
《西北工程技术学报》 2026 (1)
33-41,9
国家自然科学基金项目(52168025)
评论