Conspan Flared Girder

RE: Conspan Flared Girder

Dilip Matange [Bentley] — Wed, 06 Jan 2021 15:34:05 GMT

Please email me your phone # at dilip.matange@bentley.com. I will call you to discuss.

Regards
Dilip

RE: Conspan Flared Girder

Benjamin Spilker — Wed, 06 Jan 2021 15:06:28 GMT

Is this the "Deck offset to Align" data listed in the bridge component layout? If so, those numbers match my Microstation sketches. I simply can't figure out what logic is used to define the girder locations. Their left hand reference seems to be a point out in space outside of the bridge deck and past the bent cap.

Furthermore, changing the spacing at the beginning of the girder also seems to change the location of the end of the girder.

When I go into the parametric editor to define the points manually, the bent stations have all changed.

Any ideas what is going on?

RE: Conspan Flared Girder

Vinay mysore — Wed, 06 Jan 2021 08:57:00 GMT

Issue might be related to alignment offset , please check that information.

I hope it helps

RE: Conspan Flared Girder

Benjamin Spilker — Tue, 05 Jan 2021 22:48:17 GMT

I am having a similar issue with a framing plan I am working on.

As you can see, I am ending up with girders outside of the bridge deck, and the girders do not appear to be spaced correctly. I have followed the advice above and cannot get the girders to the correct locations. Is this a graphical error, or do I have incorrect input?

RE: Conspan Flared Girder

Dilip Matange [Bentley] — Tue, 03 Nov 2015 19:46:51 GMT

The attached image should explain the Deck Offset and Deck Width along with other terms:

Regards

Dilip

RE: Conspan Flared Girder

Dilip Matange [Bentley] — Tue, 03 Nov 2015 19:06:09 GMT

Hi Rob,

Please email me your phone # at dilip.matange@bentley.com. I will call you

Regards
Dilip

RE: Conspan Flared Girder

Rob Zolcak — Tue, 03 Nov 2015 18:49:50 GMT

Thanks for the earlier response. I still have issues with the geometry. Below is a bridge run with skewed supports and simple span.

Here is the alignment information.

Here is the layout information. I could not find where the deck offset alignment was defined. I assume if you leave at 0, the alignment is taken along the longitudinal centerline of the bridge.

Here is the cross section information. For this situation, the beams are actually parallel. I noticed you are using a later version of the software, not version 14.

As you can see in the bridge cross section below, the deck and beams do not line up correctly. The beams need to be shifted 3.15 ft to the right. Let mw know if you see an input error.

Thanks for any help you can provide!

RE: Conspan Flared Girder

Dilip Matange [Bentley] — Mon, 02 Nov 2015 20:26:37 GMT

Hi Rob,

For Flared Girder geometry, first you need to toggle ON the Flared Girder option in the Project Tab:

Then go to the Geometry tab and click on "Cross Section..."

The Cross Section Layout dialog box allows you to define the curb data, lane data, topping thickness and most importantly the layout of the girders.

Beam numbering is based on looking upstation, and Beam 1 being referenced as the extreme left-hand-side girder with all other beams following sequentially in each span. The Distance from previous beam at start or end of each span is always measured along the pier length (accounting for any skew). For the first beam in each span, this distance is measured from the pier cap edge (to account for cases where the pier cap length may not be the same as deck width, etc.).

Regards
Dilip