大连理工大学学报2016，Vol.56Issue(4)：375-381,7.DOI:10.7511/dllgxb201604008
FRP管-混凝土-钢管复合套管约束性能有限元分析
Finite element analysis for confinement behavior of hybrid FRP tube-concrete-steel tube composite bushing
摘要
Abstract
In order to study the confinement behavior of hybrid FRP tube-concrete-steel tube composite bushing,a finite element (FE)method is introduced to simulate FRP confined concrete short columns using ABAQUS software,and a modified Hognestad formula is presented to describe the stress-strain relations of concrete under uniaxial compression.The comparison of simulation and test results shows that this FE method does well in predicting mechanic properties of FRP confined concrete short columns by defining material parameters,element models,surface interactions and boundary conditions accurately.Based on these analytical data mentioned above,confinement behavior of FRP tube-concrete-steel tube composite bushing under three kinds of material thicknesses is analyzed.Study results indicate that the stress-strain curve of the concrete confined by the composite bushing presents a bilinear shape,in which the first line is decided by the steel tube mainly,while the second one by the FRP tube and concrete.Some references are provided for further research of this kind of composite column.关键词
FRP/复合套管/有限元方法/应力-应变关系Key words
FRP/composite bushing/finite element method/stress-strain relations分类
建筑与水利引用本文复制引用
张俊林,任慧韬,王苏岩..FRP管-混凝土-钢管复合套管约束性能有限元分析[J].大连理工大学学报,2016,56(4):375-381,7.基金项目
国家自然科学基金资助项目(51378089) （51378089）
