Abstract
This paper presents 36 specimen test results of high strength concrete-filled steel tube (CFST) stub columns subjected to axial compressive load. In the tests, the external compressive load vs strain on the steel tube relations were monitored and used to develop the stress-strain curves of steel tube under the 2-dimensional stress state assumption for the tube. Then the load on concrete core is successfully separated from the total load. Based on above separation, the longitudinal stress vs longitudinal strain of concrete and steel tube were developed and discussed in detail, which greatly simplified the analysis for CFST members. It was shown that concrete bearing capacity is increased by the confinement from steel tube and the ductility of CFST stub columns is improved to a certain extent.
| Original language | English |
|---|---|
| Pages (from-to) | 31-34 |
| Number of pages | 4 |
| Journal | Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology |
| Volume | 35 |
| Issue number | SUPPL. |
| State | Published - Aug 2003 |
| Externally published | Yes |
Keywords
- Axial compression
- Concrete-filled steel tube
- Separation
- Stress-strain relationship
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