Study on the Residual Load-Bearing Capacity of CFRP-Reinforced CFST Columns After Impact

DOI

10.2991/978-94-6463-793-9_13How to use a DOI?

Keywords

CFRP; Concrete-Filled Steel Tubular Columns; Low-Speed Impact; Finite Element; LS-DYNA

Abstract

Based on the simulation technology of LS-DYNA software, this study conducted comprehensive and detailed finite element simulations of concrete-filled steel tube (CFST) columns strengthened with carbon fiber-reinforced polymer (CFRP) wrapping under lateral impact loading. After validating the reliability of the simulation results by comparing them with experimental data from existing literature, this research further expanded the scope of parametric analysis. The study thoroughly investigated the influence of three key factors—CFRP ply orientation, number of reinforcement layers, and reinforcement range—on the residual compressive bearing capacity of CFST columns after lateral impact. Through a series of analyses, the following significant conclusions were drawn: (1) CFRP reinforcement significantly enhances the impact resistance of CFST columns under lateral impact loading, while effectively improving their residual compressive bearing capacity. (2) The CFRP ply angle has a notable influence on the reinforcement effect, with the compressive bearing capacity reaching its maximum when the CFRP ply angle is 0° (transverse direction), whereas it is relatively lower when the ply angle is 90° (longitudinal direction). (3) Increasing the number of CFRP layers and the reinforcement range improves the compressive bearing capacity of CFST columns, and when the reinforcement range extends to 2/3 of the clear span, the enhancement in compressive bearing capacity becomes particularly significant.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Yaxiong He
AU  - Feng Fu
PY  - 2025
DA  - 2025/07/28
TI  - Study on the Residual Load-Bearing Capacity of CFRP-Reinforced CFST Columns After Impact
BT  - Proceedings of the 2025 8th International Conference on Traffic Transportation and Civil Architecture (ICTTCA 2025)
PB  - Atlantis Press
SP  - 132
EP  - 142
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-793-9_13
DO  - 10.2991/978-94-6463-793-9_13
ID  - He2025
ER  -