Parametric study on shear capacity of circular-hole and long-hole perfobond shear connector

Shuangjie Zheng, Yuqing Liu*, Teruhiko Yoda, Weiwei Lin

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Perfobond connectors are a certain type of shear connectors used in steel and concrete composite structures. In composite bridges with narrow connector distances or shallow rib heights, it is unfavorable to enhance shear connection by using large circular-hole perfobond connectors. To solve this problem, an alternative perfobond connector was developed by making long-holes on steel rib plates. In this paper, 21 push-out specimens were fabricated and loaded to failure. The main objective was to compare the failure mode, shear capacity and slip behavior of perfobond connectors using circular-holes and long-holes. Furthermore, 87 nonlinear finite element simulations were performed to further study the effects of hole geometry and concrete strength. The parametric results were generated to evaluate the shear capacity equations for perfobond connectors. Finally, an analytical model was proposed to predict the shear strength of both circular-hole and long-hole perfobond connectors. (C) 2015 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)64-80
Number of pages17
JournalJournal of Constructional Steel Research
Volume117
DOIs
Publication statusPublished - Feb 2016
MoE publication typeA1 Journal article-refereed

Keywords

  • Composite bridge
  • Perfobond connector
  • Shear resistance
  • Circular-hole
  • Long-hole
  • SHAPED COMPOSITE DOWELS
  • PUSH-OUT TESTS
  • FATIGUE BEHAVIOR
  • STEEL
  • RESISTANCE
  • STUDS

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