A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Seismic performance evaluation of rubberized concrete-filled corrugated steel tube piers
https://orcid.org/http://orcid.org/0000-0002-5742-0618
The use of concrete-filled steel tube (CFST) piers has attracted widespread attention due to their high load-bearing capacity, excellent ductility, and superior seismic performance. Given their role as bridge substructures responsible for transmitting seismic loads, the ability of CFST piers to dissipate energy under seismic conditions significantly impacts bridge safety. This study investigates rubberized concrete-filled corrugated steel tube (RuCFCST) pier as a solution for addressing issues such as local buckling, bulging, or tearing damage in CFST columns during seismic loading. Four 1:4 scale pier specimens were subjected to pseudostatic tests to determine the effects of the axial compression ratio, filling concrete type, and connection method on the damage development, failure mode, strain distribution, and seismic performance of the pier specimens. In addition, a reliable nonlinear finite element model was established to evaluate sensitive parameters such as the length–diameter ratio, axial compression ratio, diameter-to-thickness ratio, and confinement factor. The influence of each parameter on this type of composite pier was revealed. The results showed that the flexural strength of corrugated steel tubes filled with rubber concrete was 17.4% lower than that of ordinary concrete tubes, but the ductility coefficient was 24.3% higher. When the axial compression ratio is increased from 0.2 to 0.3, the flexural strength of the composite pier increases by 16.8%, while the ductility coefficient decreases by 8%. Additionally, utilizing embedded connections reduces the flexural strength by 16.4%, but it increases the ductility coefficient by 45.9%. Finite element analysis revealed that the confinement factor was the metric with the highest sensitivity in relation to the flexural strength of the pier. This research is a novel and comprehensive exploration of the seismic performance of RuCFCST piers that provides experimental and numerical support for transitioning from conventional CFSTs to this innovative structural solution.
Seismic performance evaluation of rubberized concrete-filled corrugated steel tube piers
https://orcid.org/http://orcid.org/0000-0002-5742-0618
The use of concrete-filled steel tube (CFST) piers has attracted widespread attention due to their high load-bearing capacity, excellent ductility, and superior seismic performance. Given their role as bridge substructures responsible for transmitting seismic loads, the ability of CFST piers to dissipate energy under seismic conditions significantly impacts bridge safety. This study investigates rubberized concrete-filled corrugated steel tube (RuCFCST) pier as a solution for addressing issues such as local buckling, bulging, or tearing damage in CFST columns during seismic loading. Four 1:4 scale pier specimens were subjected to pseudostatic tests to determine the effects of the axial compression ratio, filling concrete type, and connection method on the damage development, failure mode, strain distribution, and seismic performance of the pier specimens. In addition, a reliable nonlinear finite element model was established to evaluate sensitive parameters such as the length–diameter ratio, axial compression ratio, diameter-to-thickness ratio, and confinement factor. The influence of each parameter on this type of composite pier was revealed. The results showed that the flexural strength of corrugated steel tubes filled with rubber concrete was 17.4% lower than that of ordinary concrete tubes, but the ductility coefficient was 24.3% higher. When the axial compression ratio is increased from 0.2 to 0.3, the flexural strength of the composite pier increases by 16.8%, while the ductility coefficient decreases by 8%. Additionally, utilizing embedded connections reduces the flexural strength by 16.4%, but it increases the ductility coefficient by 45.9%. Finite element analysis revealed that the confinement factor was the metric with the highest sensitivity in relation to the flexural strength of the pier. This research is a novel and comprehensive exploration of the seismic performance of RuCFCST piers that provides experimental and numerical support for transitioning from conventional CFSTs to this innovative structural solution.
Seismic performance evaluation of rubberized concrete-filled corrugated steel tube piers
https://orcid.org/http://orcid.org/0000-0002-5742-0618
The use of concrete-filled steel tube (CFST) piers has attracted widespread attention due to their high load-bearing capacity, excellent ductility, and superior seismic performance. Given their role as bridge substructures responsible for transmitting seismic loads, the ability of CFST piers to dissipate energy under seismic conditions significantly impacts bridge safety. This study investigates rubberized concrete-filled corrugated steel tube (RuCFCST) pier as a solution for addressing issues such as local buckling, bulging, or tearing damage in CFST columns during seismic loading. Four 1:4 scale pier specimens were subjected to pseudostatic tests to determine the effects of the axial compression ratio, filling concrete type, and connection method on the damage development, failure mode, strain distribution, and seismic performance of the pier specimens. In addition, a reliable nonlinear finite element model was established to evaluate sensitive parameters such as the length–diameter ratio, axial compression ratio, diameter-to-thickness ratio, and confinement factor. The influence of each parameter on this type of composite pier was revealed. The results showed that the flexural strength of corrugated steel tubes filled with rubber concrete was 17.4% lower than that of ordinary concrete tubes, but the ductility coefficient was 24.3% higher. When the axial compression ratio is increased from 0.2 to 0.3, the flexural strength of the composite pier increases by 16.8%, while the ductility coefficient decreases by 8%. Additionally, utilizing embedded connections reduces the flexural strength by 16.4%, but it increases the ductility coefficient by 45.9%. Finite element analysis revealed that the confinement factor was the metric with the highest sensitivity in relation to the flexural strength of the pier. This research is a novel and comprehensive exploration of the seismic performance of RuCFCST piers that provides experimental and numerical support for transitioning from conventional CFSTs to this innovative structural solution.
Seismic performance evaluation of rubberized concrete-filled corrugated steel tube piers
Archiv.Civ.Mech.Eng
Feng, Mingyang (author) / Zhang, Linlin (author) / Liu, Baodong (author) / Hao, Changshun (author) / Sun, Haibo (author)
2024-04-09
Article (Journal)
Electronic Resource
English
Seismic performance evaluation of rubberized concrete-filled corrugated steel tube piers
| Springer Verlag | 2024
Seismic Design of Concrete-Filled Circular Steel Bridge Piers
| Online Contents | 2004