FAQ 004716 | When calculating deformations in RF‑CONCRETE Members, I get jumps in the deformation diagram. Why?

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09/11/2020

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Adrian Langhammer

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Question

When calculating deformations in RF‑CONCRETE Members, I get jumps in the deformation diagram. Why?

Answer

In RF‑CONCRETE Members, the deformation in the cracked state is determined by using a coefficient "ζ" (according to EN 1992‑1‑1, 7.4.3). For this simplified method, the coefficient ζ is only determined once per member. The linear deformation is upscaled according to the governing location in the member.

In this context, it is possible to determine different coefficients ζ for the individual members. When scaling the linear deformation, jumps occur between the individual members.

Figure 01 - Jump in Deformation Diagram

To avoid this effect, it is recommended to use sets of members.

Figure 02 - Design of Sets of Members

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Dlubal FAQ Deformation State II (cracked) Cracked state Zeta Implausible Jump Frequently Asked Question FAQ about Dlubal Question and Answer about Dlubal

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  • Updated 10/07/2020

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