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A Selection of Features in more

Detail

2016 / 1 CABD

Bridge Geometry

CABD - Computer Aided Bridge Design

2016 / 2 CABD

System GenerationBridge Geometry – Computer Aided Bridge Design

2016 / 3 CABD

• 3D Road/rail axes for any bridge type,

• Geometry of beams and shells depending on parametric input linking formulas and tables,

• Connecting sub-structures, pylons, cables, wing walls, foundations,

piles … to superstructure,

• All parts hyperlinked and parametric.

• 3D axes also serve for traffic load and

pre-stressing.

System GenerationBridge Geometry – CABD - General

2016 / 4 CABD

• New Axis: Alignment elements in plan and elevation are defined graphically using

the corresponding tasks. Geometric parameters can be defined for this axis.

• Axis from AutoCAD curves: The axis geometry is created directly from the selected

AutoCAD geometry. Geometric parameters can be defined for the axis.

• Import axis from the SOFiSTiK database: Axis and geometric parameters are

imported from an existing database, and can then be further processed. Linked

structural elements will lose the access.

System GenerationBridge Geometry – CABD - Alignment

2016 / 5 CABD

Horizontal Alignment

• Definition of alignment in plan view.

• Length and tangent mode.

• Straight lines, circular arcs, transition

curves and curve sequence.

• Sub-types: Clothoide, bloss curve

transition, sinusodial form and

cosinusodial form.


2016 / 6 CABD

Vertical Alignment

• Height development is independent of

the alignment in plan view.

• Given with input of z-coordinates of the

tangential intersection points.

• Curvature follows a quadratic parabolic

curve.


2016 / 7 CABD

Definition of axis based variables

• Variable progression can be defined

along a geometric axis.

• Control of cross section variation

• Linear, quadratic or cubic splines can be

created.

• Stepped variations are possible.


2016 / 8 CABD

Definition of placements

• Definition of important intersections or

points for the alignment.

• For each placement a local working plan

is created.

• Working planes are aligned perpendicular

to the axis

• Types: Support axis, construction point,

excess at the beginning excess at the

end and connection point.


2016 / 9 CABD

Definition of secondary axes

• Can be defined relative to an axis or by

selecting an AutoCAD geometry.

System Generation

Bridge Geometry – CABD - Alignment

Live Examples

Beam Bridge

Slab Bridge

2016 / 10 CABD

Volume Model

2016 / 11 Volume Model

System GenerationVolume Element

SOFiPLUSSOFiSTiK

Rhinoceros Interface

SOFiMSHC

Structural Model

SOFiMSHA

Finite Element Model



General:

SOFiMSHC SOFiMSHA

Unstructured Meshing SVO UMSH / UBND

Structured Meshing - TRAN, BRIC, EXTR, LOFT

Interfaces between Volumes - SPRI, INTF


System GenerationEXTR – Extrusion and Sweeping of Elements

Option Type of source element Will be extruded to

NODE Nodes Beam elements

KINE Kinematic constraints Layers of kinematic constraints

SPRI Spring elements Layers of spring elements

EDGE Nodal sequence Quad elements

BEAM Beam element Quad elements

SLN Structural line Quad elements

QUAD Shell elements Bric elements

SAR Structural areal Bric elements

General:



Structural Line to Quad Element:

• Create two structural lines, one reference line and a path

• Export both to SSD

Reference Line

Path




+PROG SOFiMSHA

HEAD Generating of Quad Elements

SYST REST $ Needed to restore existing Elements

in the database

GRP 9 $ Group of generated Quad elements

QUAD PROP MNO 1 T 200[mm] $ poperties of Quad elements

EXTR TYPE SLN FROM SLN TO 1 PATH SLN V1 2 DIV 10

END

Reference Line

Path




EXTR TYPE SLN FROM SLN TO 1 PATH SLN V1 2 DIV 10

Reference Line

PathSelector

Number of

structural line

ID of

Selector

Extrusion pathNumbers of

Subdevisions

Type of element

to be extrude




Path (2)

Reference Line (1)

1

23

654

78

910



Quad to Bric Element:

• Create a structural area as reference and a path

• Export both to SSD

Reference

Structural Area

Path


Reference

Structural Area

Path



+PROG SOFiMSHA

HEAD Generating of Volume Elements


in the database

GRP 3 $ Group of generated Bric elements

QUAD PROP MNO 1 T 200[mm] $ poperties of Quad elements

EXTR TYPE QUAD FROM SAR TO 1 PATH SLN V1 3 OPT R

END


Reference

Structural Area

Path



EXTR TYPE QUAD FROM SAR TO 1 PATH SLN V1 3 OPT R

Selector

Number of

structural line

ID of

Selector

Extrusion pathExtrusions

Options

Type of element

to be extrude

Extrusion Options: R … Rotate source D … Delete source




Extrusion Options:

R … Rotate source

Without Extrusion Options:


System GenerationLOFT – Lofting / Interpolation

General:

• Lofting between Source / Target areas.

• Guiding Curves for curved boundaries

• Source / Target Meshes must be a

topological equal.



Quad to Quad:

Target: SAR 2

• Create a structural area as source and a target.

• Export both to SSD.

Result: Different meshes

Source: SAR 1



Create a topologically similar mesh:

+PROG SOFiMSHC

HEAD Create a topologically similar mesh

PAGE UNII 5

SYST SPAC GDIV 10000 GDIR NEGZ ; CTRL TOPO 0

CTRL TOLG VAL 0.010000[m] ; CTRL MESH 1

CTRL HMIN VAL 0.2[m] ; CTRL DELN 0

SYST REST $ Needed to restore existing Elements in the database

SAR -2 $ Modification of Structural Area 2

SARS REFT >SAR REF 1 $ Coupling with Structural Area 1

END

Target: SAR 2

Source: SAR 1



SAR -2

SARS REFT >SAR REF 1

Target: SAR 2 A negative identifier changes

existing definitions.

Defines boundary conditions, kinetmatic or

elastic couplings for the last defined SAR.

REFT: Coupling with SAR 1.

Create a topologically similar mesh:

Source: SAR 1



Target: SAR 2

Create Volume Elements:

+PROG SOFIMSHA

HEAD Volume Elements


GRP 10 $ Group of generated Bric elements

LOFT TYPE SAR 1 2 DIV 5

END

Source: SAR 1



Source: SAR 1

Target: SAR 2

Create Volume Elements:

LOFT TYPE SAR 1 2 DIV 5

Type of source/target

element. ID of source.

ID of target.

Number of Layers.

1

2

3

4

5



Summary:




Summary:


• Create a topologically similar mesh.



Summary:


• Create a topologically similar mesh.

• Create a volume elements.



Example - Shotcrete plug:

Shotcrete plug

Presure



Further Information:

• User Manual:

SOFiMESHC

SOFiMESHA

• Teddy Examples:

• Youtube Video:

SOFinar: SOFiSTiK 2016: Volume Meshing Features in SOFiMSHA

https://www.youtube.com/watch?v=Fd9BBDncxRg&t=59s


Hybrid Structures

General:

For detail design it is sometimes helpful to

refine a global model just at one spot you

are interested.

This gives the advantage to reduce

calculation time in huge models but gives

details results where needed.

2016 / 34 Hybrid Structures

Hybrid Structures

How to define:

There is no special option to activate. Just

to connect the different Elements, Structural

Line and Structural Area, by using

Constraints.


Hybrid Structures

Project: Øyanbru overbygning,

Client: Vegvesen, Oslo

Network arch bridge with local detailing on connection nodes. Global and local check.


Hybrid Structures

Project: IME Complex in Athens

Consultant: FCP Vienna

Comment: 3D Building model, detailed and global model, seismic design


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