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A platform for research: civil engineering, architecture and urbanism
Axial compression performance of ultra-high-strength concrete filled steel tubular lattice short columns
Abstract This study addresses the current research gap in the mechanical performance of Concrete Filled Steel Tubular (CFST) lattice columns, focusing on high-strength or ultra-high-strength materials. Tests were conducted on six Ultra-High-Strength Concrete (UHSC) filled steel tubular lattice short columns to investigate their axial compression performance. Experimental parameters included core concrete strength and steel tube wall thickness of the CFST limbs. Discussions covered failure modes, load–displacement curves of specimens, load–strain relationships of limb tubes and lacing tubes, and Poisson's ratios of limb tubes. Subsequently, Finite Element Model (FEM) was established using ABAQUS Software and verified by test results. The FEM was employed for further parameter analysis, including the steel tube wall thickness of the limb, the core concrete strength of the limb, the steel tube strength of the limb, and the center distance between the limbs. Finally, existing calculation methods for predicting the ultimate bearing capacity of UHSC-filled steel tubular lattice short columns were evaluated, leading to the proposal of a practical and accurate calculation method based on the findings.
Highlights Addressing the gap in the mechanical performance of CFST lattice columns using ultra-high-strength materials. Revealing the axial compression mechanism of UHSC-filled steel tubular short columns through experiments. Utilizing validated finite element models to conduct comprehensive parameter analysis. Examining the calculation formula for determining the axial compression bearing capacity of this new lattice column.
Axial compression performance of ultra-high-strength concrete filled steel tubular lattice short columns
Abstract This study addresses the current research gap in the mechanical performance of Concrete Filled Steel Tubular (CFST) lattice columns, focusing on high-strength or ultra-high-strength materials. Tests were conducted on six Ultra-High-Strength Concrete (UHSC) filled steel tubular lattice short columns to investigate their axial compression performance. Experimental parameters included core concrete strength and steel tube wall thickness of the CFST limbs. Discussions covered failure modes, load–displacement curves of specimens, load–strain relationships of limb tubes and lacing tubes, and Poisson's ratios of limb tubes. Subsequently, Finite Element Model (FEM) was established using ABAQUS Software and verified by test results. The FEM was employed for further parameter analysis, including the steel tube wall thickness of the limb, the core concrete strength of the limb, the steel tube strength of the limb, and the center distance between the limbs. Finally, existing calculation methods for predicting the ultimate bearing capacity of UHSC-filled steel tubular lattice short columns were evaluated, leading to the proposal of a practical and accurate calculation method based on the findings.
Highlights Addressing the gap in the mechanical performance of CFST lattice columns using ultra-high-strength materials. Revealing the axial compression mechanism of UHSC-filled steel tubular short columns through experiments. Utilizing validated finite element models to conduct comprehensive parameter analysis. Examining the calculation formula for determining the axial compression bearing capacity of this new lattice column.
Axial compression performance of ultra-high-strength concrete filled steel tubular lattice short columns
Wei, Jian-Gang (author) / Han, Jin-Peng (author) / Luo, Xia (author) / Yang, Yan (author) / Li, Cong (author) / Wang, Wen-Rong (author)
2024-02-23
Article (Journal)
Electronic Resource
English
Numerical modelling of concrete-filled steel tubular short columns under axial compression
| DOAJ | 2023