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author:

Lai, Z. (Lai, Z..) [1] (Scholars:赖志超) | Yan, J. (Yan, J..) [2] | Liu, X. (Liu, X..) [3] | Li, D. (Li, D..) [4] (Scholars:李栋) | Yang, X. (Yang, X..) [5] (Scholars:杨晓强) | Wang, Y. (Wang, Y..) [6] (Scholars:王莹)

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Scopus

Abstract:

High-strength steel and concrete materials (i.e., steel with yield stress Fy > 525 MPa and concrete with compressive strength f'c > 70 MPa) have been applied in various types of structures because they can increase the resistance and space efficiency of the structure. However, the AISC Specification (AISC 360-16) does not permit the use of high-strength materials in concrete-filled steel tube (CFT) members due to a lack of adequate research. This paper aims at investigating the behavior of high-strength CFT long columns and evaluating the applicability of current design equations for high-strength rectangular CFT long columns. Firstly, an experimental database including 74 tests of high-strength rectangular CFT long columns was compiled and gaps in the database were identified. Then, finite element (FE) models were developed and benchmarked for parametric studies. The effects of width-to-thickness ratio of the steel tube, yield stress of steel, compressive strength of concrete, and length-to-depth ratio of the member were investigated. Finally, new design equations for high-strength rectangular CFT long columns were proposed based on the modified slenderness reduction factor in AISC 360-16. © 2023 Elsevier Ltd

Keyword:

Axial behavior and design CFT Evaluation Finite element analysis High-strength

Community:

  • [ 1 ] [Lai Z.]College of Civil Engineering, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 2 ] [Yan J.]College of Civil Engineering, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 3 ] [Liu X.]College of Civil Engineering, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 4 ] [Li D.]College of Civil Engineering, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 5 ] [Yang X.]College of Civil Engineering, Fuzhou University, Fujian, Fuzhou, 350108, China
  • [ 6 ] [Wang Y.]College of Civil Engineering, Fuzhou University, Fujian, Fuzhou, 350108, China

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Source :

Journal of Building Engineering

ISSN: 2352-7102

Year: 2023

Volume: 75

6 . 7

JCR@2023

6 . 7 0 0

JCR@2023

ESI HC Threshold:35

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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