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The objective of the presented work is the analysis of the numerically determined nodal moments at the exterior wall-floor joint compared to the linear-elastic calculation of a frame section according to Annex C of Eurocode 6, Part 1–1 (EN 1996-1-1). The focus of the comparative analysis is the influence of the structural nonlinearity of the exterior wall-floor joint as well as the acting wall axial force, which are explicitly captured in the FE model in contrast to the linear-elastic frame section. In particular, the contact zone is of special importance for partially supported floor and the associated discontinuous stress distribution between the exterior wall and slab. The reason for this is the fact that the transition zone between the masonry wall and the slab behaves in a highly nonlinear manner due to the lack of tensile strength. The related eccentricity e/a required for the ultimate limit state design is thus significantly influenced by the interaction of the axial force and the resulting joint rotations.

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Numerical Investigation for Nonlinear Internal Forces at the Exterior Wall-Floor Joints

  • 会议论文

  • 发表日期：

    2025年

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  • Jonathan Meißner,
  • Detleff Schermer,
  • Franziska Amberger,
  • Philipp Hofmann

摘要

The objective of the presented work is the analysis of the numerically determined nodal moments at the exterior wall-floor joint compared to the linear-elastic calculation of a frame section according to Annex C of Eurocode 6, Part 1–1 (EN 1996-1-1). The focus of the comparative analysis is the influence of the structural nonlinearity of the exterior wall-floor joint as well as the acting wall axial force, which are explicitly captured in the FE model in contrast to the linear-elastic frame section. In particular, the contact zone is of special importance for partially supported floor and the associated discontinuous stress distribution between the exterior wall and slab. The reason for this is the fact that the transition zone between the masonry wall and the slab behaves in a highly nonlinear manner due to the lack of tensile strength. The related eccentricity e/a required for the ultimate limit state design is thus significantly influenced by the interaction of the axial force and the resulting joint rotations.