1. © 2009 Bentley Systems, Incorporated Richard W. Bradshaw Director of Development – Rail Design Modeling with Bentley Rail

2. © 2009 Bentley Systems, Incorporated 2 | WWW.BENTLEY.COM Roadway Designer for Track Utilizing Roadway Design for modeling track and earthwork.

3. © 2009 Bentley Systems, Incorporated 3 | WWW.BENTLEY.COM Earthwork Modeling & Templates Components –Closed shapes that represent man–made materials –Sleepers / ties –Ballast –Subballast –Other materials End conditions –Ditches –Cut / fill slopes Similar to roads!

4. © 2009 Bentley Systems, Incorporated 4 | WWW.BENTLEY.COM Earthwork Modeling & Roadway Designer Utilize alignment model –Horizontal –Vertical –Cant, which is railway superelevation! Utilize typical sections Define model specifics –Typical sections –Point controls Cant Shoulder widening Minimum ballast depth Etc.

5. © 2009 Bentley Systems, Incorporated 5 | WWW.BENTLEY.COM Easily create new single track model…

6. © 2009 Bentley Systems, Incorporated 6 | WWW.BENTLEY.COM Or a New double track model…

7. © 2009 Bentley Systems, Incorporated 7 | WWW.BENTLEY.COM Or Even Adding Track to a Corridor! Adding track to increase capacity –Double tracking / triple tracking –Parallel existing horizontal, vertical and cant

8. © 2009 Bentley Systems, Incorporated 8 | WWW.BENTLEY.COM Easily create track models…

9. © 2009 Bentley Systems, Incorporated 9 | WWW.BENTLEY.COM So lets look at some examples Modeling track formation examples

10. © 2009 Bentley Systems, Incorporated 10 | WWW.BENTLEY.COM Single Track Characteristics –Single track –Ballast surface rotates with superelevation –Sub-grade widens to accommodate high side superelevation, but cross-slopes remain constant

11. © 2009 Bentley Systems, Incorporated 11 | WWW.BENTLEY.COM Ballast Rotation Ballast Rotation with Superelevation –PGL Vertical alignment constraint –Cant L rail – cant R rail – cant –Horizontal & Slope constraint

12. © 2009 Bentley Systems, Incorporated 12 | WWW.BENTLEY.COM Sub-grade Widening Sub-grade shoulder widening (high side super) –R subballast B Horizontal constraint –R subballast T Two slope constraints –R ballast B Two slope constraints

13. © 2009 Bentley Systems, Incorporated 13 | WWW.BENTLEY.COM Simple Single Track Template Shoulder widening –R subballast B –R subballast T –R ballast B

14. © 2009 Bentley Systems, Incorporated 14 | WWW.BENTLEY.COM Point Controls Within Roadway Designer add the Point Controls for –Cant Center, left and right

15. © 2009 Bentley Systems, Incorporated 15 | WWW.BENTLEY.COM Curve Widening Curve widening will be applied to –R subballast B –L subballast B Based upon a simple table

16. © 2009 Bentley Systems, Incorporated 16 | WWW.BENTLEY.COM Final Point Controls After applying cant point controls and curve widening point controls, we will have the following:

17. © 2009 Bentley Systems, Incorporated 17 | WWW.BENTLEY.COM Resulting in and…

18. © 2009 Bentley Systems, Incorporated 18 | WWW.BENTLEY.COM A 3D Model…

19. © 2009 Bentley Systems, Incorporated 19 | WWW.BENTLEY.COM And ECXAttributes A means to share data without a specific application!

20. © 2009 Bentley Systems, Incorporated 20 | WWW.BENTLEY.COM Lets extend our solution Building on top of the rail superelevation solution by adding more constraints into the template.

21. © 2009 Bentley Systems, Incorporated 21 | WWW.BENTLEY.COM Parametric & Other Constraints One point under each rail for minimum depth Constraints –Parametric Constraints for Depth Sub-grade widths –Horizontal –Vertical Minimum

22. © 2009 Bentley Systems, Incorporated 22 | WWW.BENTLEY.COM Parametric Constraints –Min ballast depth Default to 450mm, but user can over-ride –L subballast width & R subballast width Default to 3 m, but again it can be over-ridden

23. © 2009 Bentley Systems, Incorporated 23 | WWW.BENTLEY.COM And lets extend it some more Building upon our previous solutions to arrive at a more advanced solution

24. © 2009 Bentley Systems, Incorporated 24 | WWW.BENTLEY.COM Multiple Track Alignments Constraints –Horizontal & slope constraints for superelevation –Minimum vertical depth under each rail to sub-grade Note “end of sleeper ballast build-up”

25. © 2009 Bentley Systems, Incorporated 25 | WWW.BENTLEY.COM Adding Multi-alignment Point Controls Points Controls –Right track superelevation –Left track superelevation –Minimum vertical depth –Sub-grade widths

26. © 2009 Bentley Systems, Incorporated 26 | WWW.BENTLEY.COM And the 3D model

27. © 2009 Bentley Systems, Incorporated 27 | WWW.BENTLEY.COM If you need some help..\samples\rail modeling –.itl and associated.pdf (linked to the.itl)

28. © 2009 Bentley Systems, Incorporated 28 | WWW.BENTLEY.COM Swept Path Analysis New functionality for the modeling of vehicle swept paths

29. © 2009 Bentley Systems, Incorporated 29 | WWW.BENTLEY.COM Swept Path Analysis New functionality for the creation of swept path / vehicle envelopes –Results can be Horizontal project only Interactive or 3D mesh –Up to 3 vehicles in tandem –Uses horizontal, vertical and cant geometries

30. © 2009 Bentley Systems, Incorporated 30 | WWW.BENTLEY.COM Interactive

31. © 2009 Bentley Systems, Incorporated 31 | WWW.BENTLEY.COM Combining Track & Overhead Line to Create a Rail Information Model