Experimental tests on composite beam-column joint with WUF-B connection subjected to impact loads

Kang Chen, Bo Yang, Yao Zhang*, Kang Hai Tan*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This paper presents a test programme on composite welded unreinforced flange-bolted web (WUF-B) joints subjected to impact loads from a drop-weight test machine. A total of four beam-column joints were designed and tested to investigate the governing parameters including the impact velocity, joint type and slab thickness of composite decking. Structural responses such as impact force, axial force and bending moment developed at the joints were presented. Typical failure modes for the middle and side joints were shown and discussed. Besides, development of strains at different locations of the joints, as well as strain rate effect on material strength was investigated. A comparison of design predictions and measured values of tying resistance, flexural resistance and rotation capacities was conducted. In addition, a comparison with the similar specimens but subjected to quasi-static tests was conducted. It was found that the strain rate effect could enhance flexural resistance and tying resistance but reduce the ultimate rotation capacity. Composite slab effect would enhance flexural resistance but reduce tying resistance.

Original languageEnglish
Article number104506
JournalInternational Journal of Impact Engineering
Publication statusPublished - Apr 2023


  • Composite joint
  • Impact load
  • Progressive collapse
  • Strain rate
  • WUF-b


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