1. Generating Construction Drawings from RM Bridge
Alex Mabrich, PE, MSc Bridge Product Specialist 1

2. Geometry Definition Any Type of Analysis
GENERAL OVERVIEW
ONE WAY EXPORT
Geometry Definition
Any Type of Analysis
Superstructure
Substructure
Stage by stage
Non-linear…
Axis.
Cross Sections.
Structural Units (Segments).
Preparation for Design Checks:
Stress Points
Temperature Points
Perimeter…
Tendon definition.
Loading preparation.
Load Combinations.
Construction Sequence.
Analysis.
Design Code Checks:
Fibre Stress
Ultimate Capacity
Shear Capacity…
EXPORT ANY TIME

3. Geometrical Pre-Processor
GENERAL APPROACH
Geometrical Pre-Processor
Definition of axis reflecting the position of a structure in 3D
Definition of cross-sections
Definition of segments by distributing cross-sections along the axis
Assignment of tables and formulas to vary dimensions over the length of the structure
Preparation of Reference points for design checks
Preparation of shapes for the geometry of tendons

4. 1.Axis: 2.Cross Section GP DEFINITIONS
Combination of plan view & elevation view = 3D position of axis.
Elevation: straight lines, arcs & parabolas.
Plan View: straight lines, arcs & spirals.
Distance measured along axis = station.
Axis
Bridge
2.Cross Section
The intersection of the Construction lines are used to compose plane elements, which define the Finite Element CS.
Construction lines are basis of CS.
FE element mesh.
Variables: e.g. height variation.
Parts: e.g. composite, grillage… 1 2
Part numbers
Segment points

5. 3.Formulas & Tables 4.Segment Axis CS Tables Segment GP DEFINITIONS
Adapt the Cross Section variables along the axis.
4.Segment
Part of the system prepared to be exported to RM: Components are identified and logically grouped together.
Consists of segment points.
Assignment of CS to seg. Points.
Definition of beam elements & nodes.
Master segment: related to axis.
Slave segment: depending on geometry & position in other segments.
Slave reference line
Segment points
Bridge girders.
Piers.
Cross Beams.
Cables.
Types:
Axis CS
Tables
Segment

6. Axis – Plan View
Definitions in Plan View using straight lines, arcs and spirals
30.000
0.000
95.000
80.000
15.000 x z

7. Axis – Elevation AXIS DEFINITON
Definition in Elevation using straight lines, arcs and parabolas

8. Axis – 3D y z x AXIS DEFINITON
Bridge structure x z y
Combination of plan view & elevation view = 3D position of axis
All distances are measured along the axis defined in plan view

9. Axis CS Segment SEGMENTS Plan View Axis
A Segment is a part of a structure prepared for the export to RM2006
Components are identified and logically grouped together
Discretisation of the structure along the defined axis → “Segment points”
Plan View
Axis

11. GP to RM Transfer Geometry to Analysis Module
Geometry gets transformed to an Structural Model
Design Calculations performed in RM
Creation of the BrIM folder

13. What is Generated? A BrIM folder in your working directory
Geometry data
Design Information
2D Drawings
3D models : Bridge and DTM

14. BrIM Folder General Layout 3D DTM 3D Model 3D Tendon Alignment Axes
Horizontal Alignment
Vertical Alignment
Elevation view
Deck
Typical Sections
Segment Sections
Construction
Structural Model
Shop Drawings
Individual Segment Sections

15. General Layout 3D DTM: bridge in 3D
3D Model : 3d model including the structural nodes used.
3D Tendon: tendon layout
Alignment: 2D alignment data

16. Axes
Horizontal Alignment: 2D alignment with table of geometric elements.
Vertical Alignment: 2D alignment and profile tables.
Elevation view: 2D profile and table of geometric elements.

17. Deck
Typical Sections: structural segments in which the bridge was divided.
Segment Sections: typical cross sections of the segments used. Segments in tabular format.

18. Construction
Structural Model: structural model used, nodes, segments, abutments and piers.

19. Shop Drawings
Individual Segment sections: segments design data in 2D and 3D. Segment steel reinforcement.

20. CADD Standards Based on a “seed” dgn file” Template.dgn
In the future, we will specify label symbology of the structural elements, fonts and text size for labeling, scales to use.

21. Thanks for your attention !
Generating Construction Drawings from RM Bridge
Alex Mabrich, PE, MSc Bridge Product Specialist 1