Size effect of GFRP-concrete-steel tubular composite columns under axial compression
LI Wen
MENG Rui
NA Yu
Abstract：In order to study the influence of size effect on the mechanical properties of GFRP-concrete-steel tubular composite columns, the mechanical properties of 8 specimens with different specimen sizes and different concrete strength grades under axial compression were tested and studied with the static loading method under the condition of satisfying the geometrical similarity.In addition, the failure phenomenon, load-strain curve, ultimate bearing capacity and stress value change of 8 specimens of composite columns were analyzed and compared.The results show that with increasing the specimen size, the deformation resistance of specimens decreases, and the size effect is obvious.With increasing the thickness of GFRP tube, the bearing capacity of specimens gets improved, the mechanical properties of specimens get enhanced, and the effect of size effect reduces.
Keywords：GFRP-concrete-steel tubular composite columnsize effectcompression specimenaxial compressionstatic loadingexperimental studyload-strain curveultimate bearing capacity
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 464-468 )