QUESTION: How to Model and Run RC Slab Bridge in LARSBridge V20?

ANSWER:

Generally, the reinforced concrete slab in OLD LARs (V10) was analyzed as a 12" wide RC beams.

So in LARS V20 users can model the RC slab as 12" wide RC beams.

We have LARS V20 example files for both Simple and Multiple span RC Beams.

Please check the below mentioned path.

D:\LARSBridge_USTSG\Examples\Tutorial Files\Simple Span\CIP RC Girder.

Step by Step procedure to model RC Slab Bridge.

1) First Click on ADD Bridge and select Concrete girders,

2) Then input the Alignment, Profiles and Cross Sections.

3) Input the Pier/Abutment Station Location values.

4) Input a very small value for the Deck Slab thickness and input the material as None.

5) If the Deck slab information is not added then the program will not run.

6) In the Girder Layout input the Beam Layout information (Edge Spacing, Beam Spacing ....).

7) The Beam spacing should be 12".

7) Click on Girder Definition and select Girder Type as Rectangular and Girder Element as Web.

8) Input the Width (12") and the depth of the Slab.

9) Then input the Rebar pattern for each beam.

10) Program generates the Dead load automatically, but user can apply additional loads as well.

11) In the Analysis window user can generate the Live load distribution factors or manually input the LLDF.

11) Then Run the analysis and generate the report.

LARSBridge – Step by Step procedure to model and Run RC Slab Bridge.