Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 322, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2021.126144
Keywords
Concrete-filled steel tube; Stub columns; Compressive strength; Design specification; Review
Categories
Funding
- Fundamental Research Funds for the Central University, Chang'an University [300102219711]
- National Natural Science Foundation of China [51978066]
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This paper reviews the compressive strength of circular concrete-filled steel tube stub columns (CFST-SCs) and evaluates the applicability and reliability of international design specifications for predicting compressive strength. The study reveals that all specifications yield conservative predictions on the strength capacity of CFST-SCs. Additionally, the paper provides recommendations for preventing buckling failure and assesses the applicability of existing guidelines for evaluating axial strength of CFST-SCs.
This paper reviews the compressive strength of circular concrete-filled steel tube stub columns (CFST-SCs). The material compositions for compressive behavior experiments of circular CFST-SCs are summarized, and the confinement effect and failure mode are discussed. Experimental results of 367 circular CFST-SCs are utilized to evaluate applicability and reliability of six international design specifications for predicting compressive strength. The reliability of prediction results under different influencing factors is discussed. The outcomes revealed that all specifications yielded conservative predictions on the strength capacity of the circular CFST-SCs. AS/NZS 2327 and CAN/CSA S16-01 bring the most conservative predictions. On average, EC 4 better captures the strength capacity of small-size circular CFST-SCs provides an adequate reliability level for structural design. The study provides summations of measures preventing buckling failure of circular CFST-SCs and the applicability of existing guidelines for assessing their axial strength.
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