Simplified impact force models for novel FRP-steel–concrete composite columns under axial impact loading

Huiyu Bai, Daiyu Wang, Tao Yu, Changhai Zhai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)

Abstract

This study aims to investigate the axial impact resistance of FRP tube-confined concrete-encased cross-shaped steel column (FCCSC). The numerical simulations were conducted utilizing the ABAQUS software. The finite element (FE) models developed in this study were validated and upgraded by fitting the relevant test data of FRP-confined concrete-filled steel tube (FCFST). Subsequently, a significant number of models were established and executed with four variable parameters, namely impact mass, impact velocity, concrete strength and FRP tube thickness. Based on the analysis results, typical axial impact states were summarized and defined. Then, the simplified impact force time history models were developed for predicting the dynamic responses of FCCSCs subjected to axial impact loads. The dynamic damage index for axial impact resistance and the corresponding design flow of FCCSCs also have been proposed.

Original languageEnglish
Article number105273
JournalStructures
Volume57
DOIs
Publication statusPublished - Nov 2023

Keywords

  • Axial impact performance
  • Composite columns
  • Damage states
  • Dynamic damage index
  • Numerical simulations

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Safety, Risk, Reliability and Quality

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