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

Alex Mabrich, PE, MSc Bridge Product Specialist

Generating Construction Drawings from RM

Bridge

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ONE WAY EXPORT

EXPORT ANY TIME

Geometry Definition Any Type of Analysis

Axis. Cross Sections. Structural Units (Segments). Preparation for Design Checks:

Stress Points

Temperature Points

Perimeter…

Stage by stage

Non-linear… Tendon definition. Loading preparation. Load Combinations. Construction Sequence. Analysis. Design Code Checks:

Fibre Stress

Ultimate Capacity

Shear Capacity…

Superstructure

Substructure

GENERAL OVERVIEW

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GENERAL APPROACH

– 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

Geometrical Pre-Processor

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GP DEFINITIONS

1.Axis:

2.Cross Section

Elevation: straight lines, arcs & parabolas.

Plan View: straight lines, arcs & spirals.

Distance measured along axis = station.

Combination of plan view & elevation view = 3D position of axis.

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…

Axis

Bridge

1 1 1 1 11 11

22

22

22

2 2

1 1 1 1 1 11 1

1 1

1 1 1 1Part numbers

Segment points

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GP DEFINITIONS 3.Formulas & Tables

4.Segment

Axis CS Tables 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.

Bridge girders.

Piers.

Cross Beams.

Cables.

Slave reference line

Segment points

Adapt the Cross Section variables along the axis.

Types:

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– Definitions in Plan View using straight lines, arcs and spirals

Axis – Plan View

30

.000

0.0

00

95

.000

14

0.00

0

80

.000

15

.000

x

z

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AXIS DEFINITON

– Definition in Elevation using straight lines, arcs and parabolas

Axis – Elevation

0.

000

20.0

00

65.0

00

140

.000

0.115

- 0.320

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AXIS DEFINITON

– Combination of plan view & elevation view = 3D position of axis

– All distances are measured along the axis defined in plan view

Axis – 3D

Axis

Bridge structure

xz

y

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SEGMENTS

– A Segment is a part of a structure prepared for the export to RM2006– Components are identified and logically grouped together

Axis CS Segment

Axis

– Discretisation of the structure along the defined axis → “Segment points”

Plan View

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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


What is Generated?

• A BrIM folder in your working directory

• Geometry data

• Design Information

• 2D Drawings

• 3D models : Bridge and DTM


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


General Layout

• 3D DTM: bridge in 3D

• 3D Model : 3d model including the structural nodes used.

• 3D Tendon: tendon layout

• Alignment: 2D alignment data


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.


Deck

• Typical Sections: structural segments in which the bridge was divided.

• Segment Sections: typical cross sections of the segments used. Segments in tabular format.


Construction

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


Shop Drawings

• Individual Segment sections: segments design data in 2D and 3D. Segment steel reinforcement.


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.


Alex Mabrich, PE, MSc Bridge Product Specialist

Generating Construction Drawings from RM Bridge

Thanks for your attention !

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

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