Longitudinal Allowable Stress of Steel Tube in Concrete-filled Steel Tube(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2015年06期
- Page:
- 1-7
- Research Field:
- Publishing date:
Info
- Title:
- Longitudinal Allowable Stress of Steel Tube in Concrete-filled Steel Tube
- Author(s):
- LIU Yong-jian; JIANG Lei; ZHANG Ning
- National Engineering Laboratory for Bridge Structure Safety Technology, Chang’an University
- Keywords:
- concrete-filled steel tube; ultimate bearing capacity; composite action; steel tube; longitudinal allowable stress; strength reduction
- PACS:
- -
- DOI:
- -
- Abstract:
- According to multiaxial stress state of steel tube and concrete under ultimate state in concrete-filled steel tubular (CFST)stub columns under axial load, longitudinal allowable stress reduction factor of steel tube and compressive strength improvement factor of concrete were defined to analyze the stress state and calculate the axial bearing capacity, and the calculation methods of the factors were proposed. Comparison between the calculation values of the method and test values was carried out. The results show that the calculation results are in good agreement with the test results. The proposed longitudinal allowable stress reduction factor contributes to understanding interaction mechanism and can provide references for joint design of CFST structure in scope of engineering.
Last Update: 2015-11-30