Experimental and numerical investigations of GFRP-repaired short steel tubes with dented damage under axial loading

Abstract

This article mainly investigates the axial compressive behavior of GFRP-repaired dented steel tubes through experimental and numerical methods. First, the experimental tests are implemented to introduce dented damage, perform repair processing, and research the final compression response. Subsequently, numerical simulation is conducted to characterize the dented deformation and the axial compression behavior of GFRP-repaired dented steel tubes. Finally, the parametric studies of GFRP-repaired steel tubes are further conducted numerically. The results demonstrated that GFRP can evidently polish up the mechanical behavior of dented steel tube, delay local buckling, and finally improve the ultimate compression strength of steel tubes.

Keywords:

• GFRP repairing
• axial compression behavior
• numerical simulation
• progressive damage analysis
• parametric studies

Disclosure statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (Grant No. 52071308 and 51879248), the Natural Science Foundation of Jiangsu Higher Education Institutions of China under Grants 21KJB570009, and in part by Projects from Nantong city Grant MS22022103 and JC2021170.