A Design Method for Walls with Encased Steel Profiles

Plumier, André; Degée, Hervé; Dragan, Dan; Huy, Nguyễn Quang

doi:10.1007/978-3-319-59471-2_124

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“…More details regarding the design approach can be found in Chapter 5 of a recently published book -"Design of hybrid structures -where steel profiles meet concrete" [7] with various types of numerical examples.…”

Section: Introductionmentioning

confidence: 99%

Characterizing transition zone between steel‐concrete composite and reinforced concrete members

Dragan,

Das,

Degee

2023

ce papers

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Steel profiles are often embedded in reinforced concrete (RC) members (specially columns) to achieve higher performance in a localised manner. Although the RC and steel‐concrete composite zones of such members can be respectively designed according to the Eurocodes 2 and 4, the transition zone between the steel profile and its surrounding concrete needs to be adequately designed to ensure an effective transmission of the axial force, shear and bending moments carried by the interrupted steel component. This is currently not covered by the design standards and is only partially covered by the current literature. This article proposes a design procedure for such transition zones relying on a 2‐steps approach: (1) Definition of the transverse load to be transferred from the steel part of the composite zone to the RC part, based on a reasonable distribution of the contact pressure between the profile and the surrounding concrete; and (2) Evaluation of a suitable “strut & tie” mechanism to ensure the appropriate transfer of this load and consecutive design of the transverse reinforcement. In order to evaluate the efficiency of the design approach, the transition zone between a composite and a pure RC part of a locally composite column was investigated experimentally. Four test specimens were designed and tested in order to study the influence of certain parameters, e.g. length of the assumed transfer zone, presence of one or two lateral beams at the level of the transfer zone, compression level in the column, etc.

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Section: Introductionmentioning

confidence: 99%