GFRP短柱构件轴压性能试验与有限元分析  

AXIAL COMPRESSION PERFORMANCE TEST AND FINITE ELEMENT ANALYSIS OF GFRP SHORT COLUMN COMPONENTS

作　　者：李浩全 惠颖[1] LI Haoquan;XI Ying(Department of Civil Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学土木工程系

出　　处：《低温建筑技术》2019年第7期39-43,共5页Low Temperature Architecture Technology

基　　金：国家自然科学基金资助项目(51378108)

摘　　要：为探究玻璃纤维增强复合材料(GFRP)压杆稳定承载性能,对GFRP圆杆进行轴心受压试验,主要考察长细比、截面尺寸以及边界条件对杆件的影响。通过试验得到杆件的极限承载力、破坏模式、荷载-位移曲线和应力-应变曲线。在试验基础上采用有限元软件ABAQUS计算了不同长细比、径厚比的两端铰支GFRP轴压杆的承载力,得到不同径厚比下轴压杆件极限承载力随长细比的变化曲线。结合试验和数值模拟结果,得到了铰支条件下GFRP轴心受力杆件破坏模式随长细比、径厚比的变化规律,为压杆稳定承载力计算公式的提出奠定基础。In order to investigate the stable bearing capacity of glass fiber reinforced composites (GFRP), the axial compression test of GFRP round rods was carried out. The effects of slenderness ratio, section size and boundary conditions on the rods were mainly investigated. The ultimate bearing capacity, failure mode, load-displacement curve and stress-strain curve of the rod are obtained through experiments. Based on the test, the finite element software ABAQUS was used to calculate the bearing capacity of the GFRP axial compression rods with different slenderness ratios and radius-thickness ratios. The variation curves of ultimate bearing capacity of axially compressed members with slenderness ratio under different diameter-thickness ratios are obtained. Combined with the experimental and numerical results, the failure modes of GFRP axially loaded members with hinged supports are obtained, which lays a foundation for the formulation of the stability bearing capacity of compression members.

关 键 词：GFRP 刀铰支座 长细比 径厚比 轴心受压 极限承载力 

分 类 号：TU323.1[建筑科学—结构工程]