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Rectangular concrete-filled steel tubular beam-columns using high-strength steel: Experiments and design
AbstractConcrete-filled steel tubular (CFT) columns and high-strength steel have been increasingly used in construction. However, the application of high-strength steel in CFT columns has not been permitted in many design codes. This paper reports an experimental investigation on the behavior of rectangular CFT beam-columns using high-strength steel. The influences of the in-fill concrete, eccentricity ratio and the width-to-thickness ratio on the resistance of the test columns are discussed. The contact behavior is studied using the finite element analysis. Chinese code DB 29-57 adopts the assumption that the concrete bears the axial load only, and the steel tube withstands the bending moment and part of the axial load. A new N-M interaction approach is developed based on the foresaid assumption to account for the plastic behavior of high-strength steel. The approach is verified by the experimental results and the available current design codes to be reasonably conservative, and it can be employed to design rectangular CFT beam-columns using high-strength steel.
HighlightsNew test data for rectangular CFT beam-columns using high-strength steel is reported.Behaviors of rectangular CFT beam-columns using high-strength steel are analyzed.The current design codes are calibrated with the experimental results.A new N-M interaction approach is proposed and verified by the experimental results.
Rectangular concrete-filled steel tubular beam-columns using high-strength steel: Experiments and design
AbstractConcrete-filled steel tubular (CFT) columns and high-strength steel have been increasingly used in construction. However, the application of high-strength steel in CFT columns has not been permitted in many design codes. This paper reports an experimental investigation on the behavior of rectangular CFT beam-columns using high-strength steel. The influences of the in-fill concrete, eccentricity ratio and the width-to-thickness ratio on the resistance of the test columns are discussed. The contact behavior is studied using the finite element analysis. Chinese code DB 29-57 adopts the assumption that the concrete bears the axial load only, and the steel tube withstands the bending moment and part of the axial load. A new N-M interaction approach is developed based on the foresaid assumption to account for the plastic behavior of high-strength steel. The approach is verified by the experimental results and the available current design codes to be reasonably conservative, and it can be employed to design rectangular CFT beam-columns using high-strength steel.
HighlightsNew test data for rectangular CFT beam-columns using high-strength steel is reported.Behaviors of rectangular CFT beam-columns using high-strength steel are analyzed.The current design codes are calibrated with the experimental results.A new N-M interaction approach is proposed and verified by the experimental results.
Rectangular concrete-filled steel tubular beam-columns using high-strength steel: Experiments and design
Du, Yansheng (author) / Chen, Zhihua (author) / Richard Liew, J.Y. (author) / Xiong, Ming-Xiang (author)
Journal of Constructional Steel Research ; 131 ; 1-18
2016-12-12
18 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2017
Behaviour of eccentrically loaded high-strength rectangular concrete-filled steel tubular columns
| Online Contents | 2006