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Grillage anlaysis for bridges

Grillage anlaysis for bridges

Grillage anlaysis for bridges

(OP)
Good morning -

When performing a grillage analysis on a composite steel I-girder bridge (plate elements with beam elements; beam ends offset to represent the "depth" of the superstructure), do you just add the plate moments to the moments in the beam to obtain your design moment.

I tried to release the moments in the plates, but end up with an instability.

Thank you for any help.

 

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