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International Journal of Steel Structures

, Volume 18, Issue 4, pp 1306–1317 | Cite as

In-Plane Stability of Concrete-Filled Steel Tubular Parabolic Truss Arches

  • Changyong LiuEmail author
  • Qing Hu
  • Yuyin Wang
  • Sumei Zhang
Article
  • 85 Downloads

Abstract

For determining the in-plane buckling resistance of a concrete-filled steel tubular (CFST) arch, the current technical code GB50923-2013 specifies the use of an equivalent beam-column method which ignores the effect of rise-to-span ratio. This may induce a gap between the calculated result and actual stability capacity. In this study, a FE model is used to predict the buckling behavior of CFST truss arches subjected to uniformly distributed loads. The influence of rise-to-span ratio on the capacity of truss arches is investigated, and it is found that the stability capacity reduces as rise-to-span ratio declines. Besides, the calculations of equivalent slenderness ratio for different truss sections are made to consider the effect of shear deformation. Moreover, based on FE results, a new design equation is proposed to predict the in-plane strength of CFST parabolic truss arches under uniformly distributed loads.

Keywords

Concrete-filled steel tube Truss arch In-plane stability Rise-to-span ratio Shear deformation 

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Number 51378152).

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Copyright information

© Korean Society of Steel Construction 2018

Authors and Affiliations

  1. 1.Key Lab of Structures Dynamic Behavior and Control of the Ministry of EducationHarbin Institute of TechnologyHarbinChina
  2. 2.Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters of the Ministry of Industry and Information TechnologyHarbin Institute of TechnologyHarbinChina
  3. 3.School of Civil EngineeringHarbin Institute of TechnologyHarbinChina

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