In connection with the nonlinear calculation for the serviceability limit state designs, I get implausibly large crack width and deformation values in the RF-CONCRETE Modules (see Figure 1). What is the cause and how can I fix the problem?

Answer

Please note that in the context of the nonlinear calculation, the reinforcement is not increased automatically. A nonlinear calculation is based on an already provided reinforcement. This provided reinforcement can result, for example, from the ultimate limit state designs or from a defined basic reinforcement. The reinforcement applied for the SLS designs can be displayed graphically (see Figure 2).

Cause of the Problem:

If no reinforcement results from the ULS or the basic reinforcement in some areas, the serviceability limit state design is carried out without the applied reinforcement, and very high results may result, for example in the crack width.

Solution to the problem:

It should be ensured that there is a reinforcement in each zone of the structure. This can be implemented by applying a basic reinforcement (see Figure 3).







Keywords

High Large Implausibly Values Result values Crack width Steel stress Deformation Reinforced concrete Nonlinear

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