Content Comparison

Longitudinal Offset = It offsets the foundation along the alignment.

Transverse Offset = It offsets the foundation on the y-axis perpendicular to the alignment.

Rotation = It rotates the XY plane.

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In Staged Construction Analysis, when joints are activated they normally enter at the location that was initially given to them. Joints sometimes need to become active in a location relative to the deformed structure of the model, rather than in an exact position known ahead of time.

The construction method option of construction stages specifies how to place a joint relative to the deformed location of other joints.

In Steel I Girder Bridges, deck formwork deforms and follows girder displacements. Therefore deck nodes should be constructed by shifting the node down to match the translational displacement of the girders nodes. This can be achieved with the Construction Method = Equal option of construction stages.

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For the Composite Section parameterrefer to AASHTO(2020) 6.10.1.1.1-Stresses.

The modular ratio should be taken as = n = E/Ec, where Ec = modulus of elasticity of the concrete.

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Short term and long term applications depends on the sequence of loading which results in the stress at the section.

Per AASHTO(2020) 6.10.1.1.1b—Stresses for Sections in Positive Flexure

For transient loads assumed to be applied to the short-term composite section, the concrete deck area shall be transformed by using the short-term modular ratio, n. For permanent loads assumed applied to the long-term composite section, the concrete deck area shall be transformed by using the long-term modular ratio, 3n. Where moments due to the transient and permanent loads are of opposite sign at the strength limit state, the associated composite section may be used with each of these moments if the resulting net stress in the concrete deck due to the sum of the unfactored moments is compressive. Otherwise, the provisions of Article 6.10.1.1.1c shall be used to determine the stresses in the steel section. Stresses in the concrete deck shall be determined as specified in Article 6.10.1.1.1d.

Click on the arrow button above the Analysis button located in the upper-left corner of the OpenBrIM screen.

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Click on the FEA button on the screen that opens up.

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Click on the first button on the screen that opens up and Click on the Loading button.

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Click on the third button and in the opened window, select the construction stage for which you want to see the loading.

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If there is no design lane to be set, follow the steps below:

- Click the three dots on the cell and select Import Design Lane.

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- In the opened window, choose the design lane.
- Click the Import button.

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Click on the arrow button above the Analysis button located in the upper-left corner of the OpenBrIM screen.

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Click on the FEA button on the screen that opens up.

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Click on the first button on the screen that opens up and Click on the Loading button.

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Click on the second button and in the opened window, select the case for which you want to see the loading.

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Click on the third button and in the opened window, select the degree for wind load for which you want to see the loading.

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If there is no limit state to be set, follow the steps below:

- Click the three dots on the cell and select Import OBPAASHTOLimitState.

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- In the opened window, choose the limit state.
- Click the Import button.

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If you have made changes to an analyzed model and click the button to perform the analysis again, the question shown below will be asked. You can either continue with the saved old analysis results or click the analysis button again to update the analysis results.

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If you have made changes to an designed model and click the button to perform the design again, the question shown below will be asked. You can either continue with the saved old design results or click the design button again to update the design results.

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Click on the arrow button above the Analysis button located in the upper-left corner of the OpenBrIM screen.

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Click on the FEA button on the screen that opens up.

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Click on the first button on the screen that opens up and Click on the Loading button.

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Click on the third button and in the opened window, select the degree for wind load for which you want to see the loading.

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Click on the arrow button above the Analysis button located in the upper-left corner of the OpenBrIM screen.

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Click on the Docs. button on the screen that opens up.

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