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Bridge detailing to be improved

Bridge detailing to be improved

Hello,

There will be an increase in demand for civil Infrastructure projects.

Bridge detailing is probably a billion dollar market, and so little is done to be automated in Advance Steel.

 

Highway, Railroad and Pedestrian bridges can be divided in 3 main categories-rolled beam, plate girders without horizontal sweep and plate girders with horizontal sweep.

 

1. Rolled beam bridges: 

1.1. Stringers are modeled cambered, but represented straight with bearing points being on one horizontal line. We need an improved drawing style for stringers - if possible-a separate macro to generate stringers as straight members and place stiffeners along them, sole plates and drip bars and possibility to dimension them automatically-this is may be too much to ask-but once it is done-this software will be on top.

 

1.2. Diaphragms-these are either skewed at abutments with bent plates connected to bearing stiffeners or square (intermediate diaphragms). Advance steel does not have a macro for the skewed diaphragms. These add up to appr. 2-3-4 hours per span with 6-7 stringers.

 

1.3. Utility supports-these are either channels, double angles or W-beams and may have bracing on both ends. Similar to diaphragms, these can be square or at skewed abutments.

 

2. Plate girders without horizontal sweep:

2.1. Similar to rolled beam stringers, modeled cambered, represented straight. We need a powerful macro to show them straight with stiffeners, top and bottom flanges splices locations, sole plates shown, and drip bars shown. Again-if this is done, this software will get on board majority of bridge detailers.

A separate macro for drip bars and sole plates attached to bottom flanges will be great.

2.2. Diaphragms and utility supports-there is a need of powerful macro for creating them between 4 points in the model (top and bottom of WEB plates for the two adjacent girders) 

 

3. Bridges with horizontal sweep-similar to the girders above, these need an additional top view to show relation between web plate and stiffener.

 

Bridge detailing is a completely different category in steel detailing, it is much more complicated than structural steel for buildings and miscellaneous metals, it requires extensive investigation of geometry for load and non-load conditions, and improving the modeling part by having ready macro for diaphragms, utility supports, sole plates (with bevel included), and drip bars will bring this software at a higher level.

 

Having main members represented straight on shop drawings will require a different engine than AutoCad (probably), but once it is done-it will speed up detailing and bring more and more users to this software.

 

Being NISD certified, Category Bridge, Senior Class I detailer and having done more than 200-250 bridges so far, I can say there will be market for Advance steel that is currently very little covered.

 

Regards, 

Ilko Dimitrov

ACBS

3 Kommentare
acbsdesign
Mentor

For the users and fabricators who are thinking about using Advance Steel for bridges-yes, it is better than detailing bridges in plain AutoCad.

- 3D model with nc/dxf export, surface area, proper weights, collision check, BOM, bolts lengths and count, and BEST of all-steel fits onsite. 

My idea is Autodesk to invest in 4-5 new connections to build the diaphragms, utility supports, drip bars, and sole plates, 3-4 new drawings styles, and in a powerful macro to generate drawings for cambered members to be straight with 4 end points matching the end points of the cambered members, and the attached parts shown schematically, with section views generated as well.

acbsdesign
Mentor

As a starting point would be best if we can submit Advance BOM (assign preliminary numbers) based on shape, size and thickness. Currently Advance BOM is generated by selecting each size and run the numbering to have the material sorted per size having the preliminary numbers in order.

acbsdesign
Mentor


As a second wish-possibility to create intelligent connections to cambered  plate girders-stiffener plates, diaphragms between girders, bolted splice joints.

Stiffener plates have (always) different values for clipping at the corners along the web and along the flange.

We need this done also for W-stringers.

The amount of cutting along the web and flanges is a function of the thickness of the main member.

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