期刊
JOURNAL OF STRUCTURAL ENGINEERING
卷 141, 期 12, 页码 -出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)ST.1943-541X.0001303
关键词
Composite column; Concrete-filled steel tube; Concrete encasement; Precast concrete; Metal and composite structures
资金
- Shinsegae EC
- High-Tech Urban Development Program [09 RD A01]
- R&D Policy Infra Program - Ministry of Land, Infrastructure, and Transport (MOLIT) of the Korean Government [11-Technology Standardization-09-01]
- National Research Foundation of Korea [2012H1A2A1008342, 22A20130012076] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
An experimental study was performed to investigate the axial-flexural load-carrying capacity of concrete-filled steel tube columns encased with thin precast concrete (PC). Six eccentrically loaded columns and one concentrically loaded column were tested. To prevent the premature failure of the concrete encasement, various reinforcement details such as studs, steel fiber, welded wire mesh, and cross ties were used. The maximum axial loads of the specimens agreed with the strengths predicted by current design codes, although in some specimens, the load-carrying capacity decreased immediately after the peak strength owing to early spalling of the concrete encasement. On the basis of the test results, the use of fiber-reinforced concrete is recommended to increase the ductility of columns by restraining the spalling of the concrete encasement. (C) 2015 American Society of Civil Engineers.
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