QUESTION ON CONSPAN FLARED GIRDER GEOMETRY TAB

Hi, guys, I have three questions regarding CONSPAN flared girder modeling.

1. In "Bridge Component Layout" dialogue, does the "Bearing" mean the center line of the bearings?

2. As you can see in the picture above, it is a curved bridge. How do I check the length (Span length, precast length) of each girder?

3. In the "Analysis Factor" dialogue, the live load distribution factor is give at 10th points with "code equations" option. Can I manually input DF (for both DL and LL) at 10th points?

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  • 1. In "Bridge Component Layout" dialogue, does the "Bearing" mean the center line of the bearings?

    Let me try to answer one question at a time to avoid confusion . I see that all the screen shot looks the same.

    The Bridge Component Layout dialog box is used to define the physical location of superstructure connections.
    The physical location of these connections is specified using a stationing value from a common datum.

    The bearing does not mean the center line of the bearing.

    The bearing of the superstructure connection is specified using a N-S degrees-minutes-section E-W value. You may also use the
    keyword NORMAL to denote a normal or radial connection, or the commend SKEW x.x where x.x is a positive or
    negative skew (from a normal) angle.

    Please see the attached Screenshot.

    Answer Verified By: Dong Wang 

  • Thank you for the detailed answers. I have a further question regarding your answer. The "NORMAL" option for bearing means the bearing is normal to reference line, right? To define bearings normal to girder, I have to use "SKEW" option, right? Thanks for your help.
  • NORMAL option means there is no Skew which is basically 0 degree. The centerline of bridge/Alignment and centerline of pier generally Align in same direction.

    SKEW -The term ‘angle of skew’ or ‘skew angle is basically the angle between a normal/perpendicular to the alignment/centerline of the bridge and the centerline of the pier . Thus, on a straight bridge, the skew angle at all supports would normally be the same and the term skew angle can be applied to the bridge as a whole. 
    For more information Please check this link .

    communities.bentley.com/.../18350.definition-of-skew-angle-within-the-abc-wizard
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