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Calculating Method Study and Parameter Analysis of Slender LCFST Columns Under Axial Loading

  • Ting Zhou
  • Ziyang Ren
  • Baoqi JiangEmail author
  • Minyang Xu
  • Zhiyong Lei
  • Zhihua Chen
Article
  • 17 Downloads

Abstract

L-shaped columns composed of concrete-filled steel tubes (LCFST columns) connected by steel plates, which are important component to make sure the mono-column working together, were investigated under axial loading experiment with different width and thickness of connection plates. The relationships between load and longitudinal displacement, lateral displacement, longitudinal strains and transverse strains as well as failure mode are presented. Load carrying capacity of LCFST columns increased with the width and thickness of the connection plates increasing. In addition, the integrity of the specimen was improved with increase of thickness and decrease of width of the connection plates. Failure modes obtained from the finite element model were consistent with the phenomenon observed in the test. Besides, the parameters of slenderness ratio, dimensions of connection plate, and transverse stiffener spacing were analyzed. Finally, the calculating method of yield bearing capacity of axial compression was proposed based on the former analysis.

Keywords

LCFST columns Concrete-filled steel tubes Experimental Investigation Axial loading Connection plates Finite element model Parameter analysis 

Notes

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Copyright information

© Korean Society of Steel Construction 2019

Authors and Affiliations

  1. 1.School of architectureTianjin UniversityTianjinChina
  2. 2.School of Civil EngineeringTianjin UniversityTianjinChina
  3. 3.Tianjin International Engineering InstituteTianjin UniversityTianjinChina
  4. 4.China Overseas Building (COB) LtdJinanChina
  5. 5.China Harbour Engineering Company LtdBeijingChina

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