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- Title
Research on the interfacial bonding performance of novel composite L‐shaped concrete‐filled steel tubes.
- Authors
Bai, Ying‐hua; Xin, Hao; Xie, Bo; Shen, Kang; Yan, Yan
- Abstract
Summary: This study aims to investigate the bonding performance of novel composite specially shaped concrete‐filled steel tubes (CFSTs). Seven novel composite L‐shaped CFST specimens were designed utilizing variations in steel tube wall thickness, steel tube length, and concrete strength as the primary parameters. Their failure modes, load–slip relationships, and longitudinal strain distribution patterns were examined through push‐out tests. Additionally, finite element models of the members were established using nonlinear spring elements based on the experimental data and subjected to numerical analysis. The research findings indicate that the ultimate bond strength of the composite L‐shaped CFSTs is positively correlated with steel tube wall thickness, steel tube length, and concrete strength. The strain distributions on the concave and convex faces of the L‐shaped steel tubes are identical. The results obtained from the finite element analysis closely match the experimental findings.
- Subjects
COMPOSITE columns; INTERFACIAL bonding; STEEL tubes; FINITE element method; ULTIMATE strength; FAILURE mode &; effects analysis; CONCRETE-filled tubes; NUMERICAL analysis
- Publication
Structural Design of Tall & Special Buildings, 2024, Vol 33, Issue 10, p1
- ISSN
1541-7794
- Publication type
Article
- DOI
10.1002/tal.2108