Grillage Modeling: Proportions & Arrangements

For any grillage modeling, there are two fundamental aspects to be taken into account: Proportions & Arrangements

Proportions: The element's lengths of the grillage should be similar, i.e., the longitudinal and transversal girders' distances should be of the same magnitude: A ~ B;
Arrangements: The transverse elements should be orthogonal to the longitudinal elements as this is a better solution when compared to skew transverse girders, as shown in the picture below.

Arrangement

More information can be found in the respective Training example, with documentation and files:

3d. Composite Grillage

The 3d. option in the RM Bridge Enterprise Training Examples, 3d. Composite Grillage has the datasets and a description document for ÖNORM, modeling, analysis and design of a three span grillage model…