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A platform for research: civil engineering, architecture and urbanism
New confining stress-based design for rubberised concrete-filled single/double-skin steel tubular short columns
Abstract Despite being characterised by a reduction in compressive, tensile and flexural strengths when compared to standard concrete, rubberised concrete (RuC) is being used as a way to conserve natural resources and reduce the amount of tires entering landfills. An excellent solution to limit the RuC's compressive strength drop is to incorporate this type of concrete into steel tubes. However, up-to-date there is a lack of lateral confining pressure formulae for square and circular rubberised concrete-filled steel tubular (RuCFST) columns and rubberised concrete-filled double-skin steel tubular (RuCFDST) columns. Hence, the main aim of this technical note is to provide new design formulae based on lateral confining pressure and calibrated by means of test results available in the literature. These formulae are then used to suggest more accurate design strength models compared to those obtained from European, American and Australian specifications.
Graphical abstract Display Omitted
Highlights Lateral confining pressure of steel tubes for rubberised concrete is investigated. Square and circular RuCFST and RuCFDST columns are considered. New lateral confining pressure formulae are proposed. More accurate design strength models compared to those of EC4, AISC and AS2327 are proposed.
New confining stress-based design for rubberised concrete-filled single/double-skin steel tubular short columns
Abstract Despite being characterised by a reduction in compressive, tensile and flexural strengths when compared to standard concrete, rubberised concrete (RuC) is being used as a way to conserve natural resources and reduce the amount of tires entering landfills. An excellent solution to limit the RuC's compressive strength drop is to incorporate this type of concrete into steel tubes. However, up-to-date there is a lack of lateral confining pressure formulae for square and circular rubberised concrete-filled steel tubular (RuCFST) columns and rubberised concrete-filled double-skin steel tubular (RuCFDST) columns. Hence, the main aim of this technical note is to provide new design formulae based on lateral confining pressure and calibrated by means of test results available in the literature. These formulae are then used to suggest more accurate design strength models compared to those obtained from European, American and Australian specifications.
Graphical abstract Display Omitted
Highlights Lateral confining pressure of steel tubes for rubberised concrete is investigated. Square and circular RuCFST and RuCFDST columns are considered. New lateral confining pressure formulae are proposed. More accurate design strength models compared to those of EC4, AISC and AS2327 are proposed.
New confining stress-based design for rubberised concrete-filled single/double-skin steel tubular short columns
Hassanein, M.F. (author) / Silvestre, N. (author)
2022-07-18
Article (Journal)
Electronic Resource
English
Behaviour of Slender Hybrid Rubberised Concrete Double Skin Tubular Columns under Eccentric Loading
| DOAJ | 2023