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PostPosted: Tue Dec 12, 2017 6:53 am 
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Joined: Tue Mar 28, 2017 7:31 am
Posts: 2
Hi.

I have attempted to do a grillage model. I am not too sure if I have set up the bearings and structural lines at the supports correctly.

I have a three span bridge with two fixed piers in the middle. Here is what I did.
1) Defined the geometric axis at the centroid of each beam
2) Drew the structural line and gave it a cross-section
3) Drew a structural line along the top and bottom of entire width of deck at the supports
4) Connected those two lines using line constraint
5) At the abutments I defined structural points with my bearing properties
6) At the fixed piers i drew another structural line at the top of pier and connected the structural line at the bottom of the deck and top of pier using a line link with 1e8 in both the spring and transverse direction (to simulate fixed)

Is this the correct process? I've tried to attach the model but i get the error (identified as possible attack vector). For now I am just concerned with the dead load of the deck itself.

cheers


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