GFRP管钢骨高强混凝土轴心受压柱力学性能有限元分析  

Finite Element Analysis of Mechanical Properties of GFRP Steel Reinforced High Strength Concrete Columns Under Axial Compression

作　　者：李檀 周乐[1] LI Tan;ZHOU Le(School of Architecture and Civil Engineering, Shenyang University, Shenyang 110044, China)

机构地区：[1]沈阳大学建筑工程学院,辽宁沈阳110044

出　　处：《沈阳大学学报（自然科学版）》2022年第3期221-226,共6页Journal of Shenyang University：Natural Science

基　　金：辽宁省教育厅项目(LJKZ1168);沈阳科技局中青年科技创新人才支持计划项目(RC190199)。

摘　　要：为研究GFRP管约束混凝土组合柱的工作性能,利用ABAQUS有限元软件对GFRP管钢骨高强混凝土柱进行轴压载荷下的有限元分析。结合已有试验数据及其本构关系,通过形成接触关系、单元选取、网格划分、定义载荷和边界条件建立分析模型,并和已知试验数据对比验证模型的正确性。利用该有限元模型得到了GFRP管约束混凝土组合柱的轴心受压载荷变化曲线,并分析了相关参数对试件破坏结果的影响。结果表明:试件的承载力随GFRP管壁厚度增大而增大,随缠绕角度的增大而减小;GFRP管对抑制混凝土形变、提升其承载力极限具有积极作用。In order to further study the working performance of GFRP pipe constrained concrete composite columns,ABAQUS finite element software was used to conduct finite element analysis of GFRP pipe steel bone high strength concrete columns under axial load.Combined with the existing experimental data and its constitutive relationships,the analytical model was established by building contact relationships,unit selection,meshing,defining loads and boundary conditions,and comparing with known experimental data to verify the correctness of the model.The finite element model was used to obtain the axial compressive load change curve of the GFRP tube constrained concrete composite column,and the influence of the relevant parameters on the failure result of the specimen was further analyzed.The results show that the bearing capacity of the specimen increases with the increase of the thickness of the GFRP pipe wall and decreases with the increase of the winding angle,and the GFRP pipe has a positive effect on inhibiting the deformation of the concrete and increasing its bearing capacity limit.

关 键 词：GFRP管 钢骨高强混凝土 轴心受压 有限元分析 破坏承载力 

分 类 号：TU398.9[建筑科学—结构工程] TU528.1