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author:

Wei, J. (Wei, J..) [1] | Zhang, H. (Zhang, H..) [2] | Luo, X. (Luo, X..) [3] | Yang, Y. (Yang, Y..) [4] (Scholars:杨艳)

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Abstract:

In order to study the influence of concrete strength and steel ratio on the axial compressive bearing capacity of a rectangular steel tube confined ultra-high-strength concrete short columns, and to evaluate the applicability of current bearing capacity calculation methods, a validated finite element model is used to calculate the ultimate bearing capacity of rectangular steel tube confined concrete short columns under axial compression for parameter study. The accuracy of the current calculation methods is evaluated by comparing the calculation results with test data, and the calculation method of bearing capacity is improved. The study shows that with the increase of concrete strength, the confining action tends to decrease with the same confining force parameters. The confining action of high-strength concrete members is less affected by steel ratio and chamfer ratio. The confining action of short rectangular steel tube columns decreases with the increase of the length ratio of long and short sides. Due to the decrease of confining action with increasing concrete strength and the materials strength exceeds the limitation, the proposed formula can make a better prediction on the ultimate bearing capacity than current calculation method. © 2022, Progress in Steel Buiding Structures All right reserved.

Keyword:

Bearing capacity; Confining action; Rectangular steel tube; Short column; Ultra-high-strength concrete

Community:

  • [ 1 ] [Wei, J.]School of Civil Engineering, Fujian University of Technology, Fuzhou, 350118, China
  • [ 2 ] [Wei, J.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China
  • [ 3 ] [Zhang, H.]School of Civil Engineering, Fujian University of Technology, Fuzhou, 350118, China
  • [ 4 ] [Luo, X.]School of Civil Engineering, Fujian University of Technology, Fuzhou, 350118, China
  • [ 5 ] [Yang, Y.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China

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Source :

建筑钢结构进展

ISSN: 1671-9379

CN: 31-1893/TU

Year: 2022

Issue: 7

Volume: 24

Page: 75-83

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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