Research on Bond Behavior of Concrete Filled Steel Tube under High Stress
[1]Zheng Liang,Zhang Dapeng,Guo Hong,et al.Research on Bond Behavior of Concrete Filled Steel Tube under High Stress[J].Journal of Zhengzhou University (Engineering Science),2018,39(01):18-23.[doi:10.13705/j.issn.1671-6833.2018.01.027]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
39
Number of periods:
2018 01
Page number:
18-23
Column:
Public date:
2018-01-20
- Title:
- Research on Bond Behavior of Concrete Filled Steel Tube under High Stress
- Keywords:
- concrete filled steel tube; push-out; relative displacement; longitudinal strain; adhesive force
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2018.01.027
- Abstract:
- Many studies of concrete-filled steel tubular （CEST）colimn push-out test, failed to consider the impact of core concrete expansion on the bond performance between the steel ppe and core concrete. This study aimed to examine the influence of core concrete expansion on the bond performance between steel pipe and core concrete, with pipe wall thickness and height、core concrete stress level, aspect ratio and coefficient of sliding friction between steel pipe and concrete core as change parameters. It designed a total of three groups of 10 cotrete filled steel tube column specimens to carry on push-out test. Test results showed Loaddisplacement curve was basically the same trend under this two stress state, but it had a higher carrying capacity under high stress conditions. Under high stress conditions, when the load was small, the amount of the introduction and the amount of compression were basically the same, but with the increase of load, the increase of amount of compression is faster than the rate of the increase of the increase of the amount introduction. Core concrete expansion had a greater impact on the bond performance between steel pipe and core concrete. By buttering steel pipe inner surface to reduce the friction coefficient between the steel pipe and core concrete, it had a clear impact on th relative displacement between the steel and concrete.
- References:
- -
- Similar References:
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Last Update:
2018-01-23