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How to model masonry wall in SCIA Engineer?

The masonry wall can be modelled in two ways:

1) Using orthotropy

2) Using non-linearity Compression-only 2D members

In both cases, we can also use a non-linear line hinge on the edge of the wall to ensure that moments are not transmitted to the wall and, in the event of tension, cause the structure to disconnect.

For this option we set local nonlinearities in the project data.

Beam local nonlinearity

For non-linear hinge behavior, Pressure only and Tension only functions are pre-defined. The stiffness field that appears after selecting a non-linear behavior (marked in yellow) is considered in a linear calculation.

Nonlinear functions

Note: Possibility of nonlinear behavior of line hinge is possible since version 19.0

 

1) Modelling of the masonry wall using orthotropy

This method eliminates the arch effect in the wall.

- In the project we set the material masonry

Material masonry

- In the construction service select Masonry wall. The masonry wall has a predefined orthotropic element that eliminates the vaulting of internal forces.

Masonry wall

Orthotropy

Note: This option is available since version 19.0. In earlier versions it is necessary to use a regular wall and set the orthotropy manually. To eliminate the arch effect, the coefficient d33 should be reduced to a minimum value.

 

2) Modelling of the masonry wall using nonlinearity Compression-only 2D members

The modelling of this wall leads to a nonlinear calculation with a nonlinearity of the Compression-only 2D members.

Compression-only 2D members

Then we can change the FEM model of the wall

FEM model  

 

More about modelling and behavior of masonry walls you can see on our webinar

SCIA ENGINEER - PRACTICAL APPLICATION OF RECENT DEVELOPMENT IN ANALYSIS AND EVALUATION OF RESULTS

https://www.scia.net/en/support/webinars/scia-engineer-practical-application-recent-development-analysis-and-evaluation