Abstract
An accurate estimation of the axial compression capacity of the concrete-filled steel tubular (CFST) column is crucial for ensuring the safety of structures containing them and preventing related failures. In this article, two novel hybrid fuzzy systems (FS) were used to create a new framework for estimating the axial compression capacity of circular CCFST columns. In the hybrid models, differential evolution (DE) and firefly algorithm (FFA) techniques are employed in order to obtain the optimal membership functions of the base FS model. To train the models with the new hybrid techniques, i.e., FS-DE and FS-FFA, a substantial library of 410 experimental tests was compiled from openly available literature sources. The new model’s robustness and accuracy was assessed using a variety of statistical criteria both for model development and for model validation. The novel FS-FFA and FS-DE models were able to improve the prediction capacity of the base model by 9.68% and 6.58%, respectively. Furthermore, the proposed models exhibited considerably improved performance compared to existing design code methodologies. These models can be utilized for solving similar problems in structural engineering and concrete technology with an enhanced level of accuracy.
Highlights
IntroductionConcrete-filled steel tube (CFST) members make better utilization of steel and concrete than traditional bare steel or reinforced concrete structures
The findings showed that the fuzzy system (FS)-firefly algorithm (FFA), FS-differential evolution (DE), FS-genetic algorithm (GA), and FS-particle swarm optimization (PSO) models outperformed
The FS-FFA model provided the best performance according to the various criteria for predicting circular concrete-filled steel tubular (CFST) ultimate load values
Summary
Concrete-filled steel tube (CFST) members make better utilization of steel and concrete than traditional bare steel or reinforced concrete structures. The steel tube gives confinement to the concrete infill, while the concrete infill prevents the inward buckling of the steel tube. CFST members have a long history of being used in a broad range of construction projects due to their efficiency as structural components. CFSTs have been utilized as (1) mega columns in super high-rise buildings, (2) chord members in long-span arch bridges, (3) bridge piers, (4) floodwall piling, and (5) underwater pipeline structures, as described by researchers like Wang et al [1]. The CFST components in these situations are utilized to support compressive forces
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
