Debonding would seriously affect the beneficial confinement effect on core concrete from steel tube in Concrete Filled Steel Tubular (CFST) structures. The influences of debonding on the behaviour of CFST long columns subjected to eccentric compression were studied experimentally in this paper with the main parameters of steel ratio and slenderness ratio. It can be found that compared with the non-debonding CFST long columns subjected to eccentric load, the ultimate load-carrying capacity of debonding specimens are lower, the displacements corresponding to the ultimate load-carrying capacity and the lateral deflections at specimen mid-height are less. With an increase in steel ratio or slenderness ratio, the reduction coefficients on the ultimate load-carrying capacity of CFST long columns subjected to eccentric load increased. With a decrease in steel ratio or an increase in slenderness ratio, the reduction coefficients on the lateral deflection of CFST long columns subjected to eccentric load increased.

Experimental research on influence of debonding on circular CFST long columns subjected to eccentric load / Xue, J. Q.; Liu, Z. H.; Zhang, Y. F.; Briseghella, B.; Chen, B. C.; Wei, J. G.. - (2020), pp. 1481-1485. ((Intervento presentato al convegno 7th International Symposium on Life-Cycle Civil Engineering, IALCCE 2020 tenutosi a chn nel 2020 [10.1201/9780429343292-198].

Experimental research on influence of debonding on circular CFST long columns subjected to eccentric load

Liu Z. H.;Briseghella B.;
2020

Abstract

Debonding would seriously affect the beneficial confinement effect on core concrete from steel tube in Concrete Filled Steel Tubular (CFST) structures. The influences of debonding on the behaviour of CFST long columns subjected to eccentric compression were studied experimentally in this paper with the main parameters of steel ratio and slenderness ratio. It can be found that compared with the non-debonding CFST long columns subjected to eccentric load, the ultimate load-carrying capacity of debonding specimens are lower, the displacements corresponding to the ultimate load-carrying capacity and the lateral deflections at specimen mid-height are less. With an increase in steel ratio or slenderness ratio, the reduction coefficients on the ultimate load-carrying capacity of CFST long columns subjected to eccentric load increased. With a decrease in steel ratio or an increase in slenderness ratio, the reduction coefficients on the lateral deflection of CFST long columns subjected to eccentric load increased.
7th International Symposium on Life-Cycle Civil Engineering, IALCCE 2020
chn
2020
1481
1485
Xue, J. Q.; Liu, Z. H.; Zhang, Y. F.; Briseghella, B.; Chen, B. C.; Wei, J. G.
Experimental research on influence of debonding on circular CFST long columns subjected to eccentric load / Xue, J. Q.; Liu, Z. H.; Zhang, Y. F.; Briseghella, B.; Chen, B. C.; Wei, J. G.. - (2020), pp. 1481-1485. ((Intervento presentato al convegno 7th International Symposium on Life-Cycle Civil Engineering, IALCCE 2020 tenutosi a chn nel 2020 [10.1201/9780429343292-198].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1287210
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