“eurocodes and innovation” - · pdf file22 eurocodes and innovation midas civil...

Developments in Finite Element Analysis for Bridges

“Eurocodes and Innovation”

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Eurocodes and Innovation

midas CivilDevelopments in Finite Element Analysis for Bridges

Ease of UseVehicle Loading - AutocombinationsCable TuningConstruction Stage AnalysisCode checking - Eurocodes

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midas Civil

[ Steel Plate Girder Bridge ]

[ Arch Bridge ]

[ Post-tensioned Tendon Bridge ]

[ Suspension Bridge ]

[ Cable-stayed Bridge ]

Ease of Use / User Interface

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midas Civil

Composite PC Girder Bridge

Bridge Modeling

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midas Civil

Composite Steel Girder Bridge

Bridge Modeling

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midas Civil

Composite Steel Girder Bridge

Bridge Modeling

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midas Civil

PSC Box Bridge (4 Cells)

Bridge Modeling

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midas Civil

Segmental Bridge and Tendons

Bridge Modeling

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midas Civil

Suspension Bridge Wizard

Bridge Structure Wizards

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midas Civil

FCM Bridge Wizard


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midas Civil

RC Slab Bridge Wizard


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midas Civil

RC Frame/Box Culvert Wizard


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midas CivilGrillage Model Wizard (customization for Caltrans)

[Layout Tab]

[Span Tab]

[Section Tab] [Transverse Tab]

[Tendon Tab]

[Load Tab]

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midas CivilGrillage Model Wizard (customization for Caltrans)

[ Grillage Model – BMD ]

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midas CivilIntegral Bridge Wizard (Lehane)

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midas Civil

Moving Load Code

Traffic Line Lane or

Traffic Surface Lane

Standard Vehicular

Load or User-defined

Vehicular Load

Vehicle Loading

Defining Moving Load in 3 steps

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midas Civil



Standard Vehicular


Vehicular Load

Moving Load Code

Moving Load Analysis


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midas Civil

Moving Load Code



Standard Vehicular


Vehicular Load


Moving Load Analysis

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midas CivilMoving Load Tracer

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midas Civil

[ Construction Stage Analysis – Bending Moment ]

Staged Construction

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midas CivilTime Dependent Materials

• Time Dependent Material (Creep/Shrinkage, Compressive Strength and Tendon Loss) as per Eurocode2:04

Model > Properties > Time Dependent Material(Creep/Shrinkage)

Model > Properties > Time Dependent Material(Comp. Strength)

Load > Prestress loads > Tendon Property

Creep/Shrinkage

Compressive

Strength

Tendon

Losses

Time Dependent Material (Creep/Shrinkage, Compressive Strength and Tendon Loss) as per Eurocode2:04

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midas CivilCode Checking - Eurocodes

Gen (V741) Civil (V740)

Concrete Material DB EC2:2004 EC2:2004

Steel Material DB EC3:2005 EC3:2005

Steel Section DB UNI, BS, DIN UNI, BS, DIN

Time dependent materials (Creep,

Shrinkage and Modulus of Elasticity)EC2:2004 (new for V760) EC2:2004 (new for V760)

Prestress losses EC2:2004 (new for V760) EC2:2004 (new for V760)

Static Wind load EC1:2005 N/A

Static Seismic Load EC8:2004 N/A

Response Spectrum Function EC8:2004 EC8:2004

Vehicle Load N/A EC1:2003

Masonry Pushover UNI N/A

RC Pushover EC8:2004 N/A

Steel Pushover EC8:2004 N/A

Load Combination EC0:2002 EC0:2002

Concrete Frame Design (ULS & SLS) EC2:2004 N/A

Steel Frame Design (ULS & SLS) EC3:2005 N/A

Concrete Slab & Wall Design EC2:2004 (new for V760) N/A

Capacity Design EC8:2004 (new for V760) N/A

Composite Plate Girder Design N/A

EC4:2005

EC2:2004

EC3:2005

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Beam Design/Code Checking

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Concrete Wall Design/Code Checking

5. Click [Graphic…] button.

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midas CivilPSC Design

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midas CivilPSC Design

[ Result Tables ]

[ Design Report (EXCEL compatible) ]

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midas Civil

FEACivil, Gen

Frame Model

(General Section) Generated Solid Geometry

Analysis Model

(3D Prism Mesh)

Frame Solid Wizard automatically generates Solid Geometry & Mesh

by importing Frame Model (*.MCS) from Civil and Gen.

MCS Format

Automatic Frame to Solid/Shell Model Generation

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midas Civil

File > Export > Frame Section for Solid, Frame Section for Plate

• Tendon Profiles as well as concrete girder can be exported to midas FEA for detail analysis.

• Exporting frame model to plate model in midas FEA is newly implemented.

Export frame model to solid/plate model

• The user can easily generate the solid/plate model with tendons, which will be analyzed in midas FEA.

[midas Civil: line beam model]

[midas FEA: Imported tendons]

Including Tendons if Required

[midas FEA: Solid model]


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[ Geometry Modeling ]

[ Interface Analysis ]

[ Reinforcement Analysis ]

[ Various Contour Plot ]

[ Map-mesh Generation ]

Introduction of midas FEA


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Data Exchange

Imported CAD Geometry

Generated MeshStandards for CAD Data Exchange STEP (STandard for the Exchange of Product Model Data)

IGES (Initial Graphics Exchange Specification)

• Import (Geometry)• STEP, IGES

• ACIS*, Parasolid*

• SolidWorks*, Inventor*, etc.

• AutoCAD DWG / DXF

• MIDAS MxT files

‘*’ marked CAD interfaces are options.

• Export (Geometry)• STEP, IGES, BRep

• MSC/NASTRAN*

• Import (Analysis Data)• DIANA

• MSC/NASTRAN

• Neutral (Text)

• Export (Analysis Data)• MIDAS/Civil, MIDAS/Gen

• Neutral (Text)


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Virtual Transformation (Translation, Rotation, Scaling)

by Mouse DraggingTransformation

Control Box

Virtual Mesh Transformation


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Modeling Method

• Embedded Bar (Incompatible Mesh)

• Truss (Compatible Mesh) +

Interface (Slip, Friction)

Truss + Interface(Compatible)

Prism Map-Mesh

Embedded Bar (Incompatible)

Analysis Result

Reinforcement Elements


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PSC BoxLoad Step 1

PSC BoxLoad Step 5

• Disc Normal: Opening Direction• Disc Color : Magnitude• Line : Shearing Direction

f wG fGfG /h ε nncr

Discrete Crack Smeared Crack

σncr

ctf ctf

σncr

Concrete Crack Models

Cracking Models Total Strain Crack Fixed Crack Mode & Rotating Crack Model

Discrete Crack Mode Interface Nonlinearity

Results Crack Pattern (Crack Stress/Strain)

Element Status Cracking: Partially/Fully Open, Closed, Not Yet Plasticity: Previously Plastic, Elastic, Plastic, Critical Contact: No Contact, Slip, Stick

midas FEA project applications


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Temperature Distribution

Temperature of Fire

Fire in a Subway Structure Guss Asphalt Pavement

Thermal Stress

Temperature at the Top Plate

Heat TransferSteady-State & Transient

Conduction, Convection, Radiation

Heat Flux

Heat Flow

Temperature Gradient Display

midas FEA project applications


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[ TGM (Terrain Geometry Maker) ]

[ Virtual Transformation ]

[ Probe Result ]

[ Partitioned Plot ]

[ Automesh Generation ]

Introduction of midas GTS


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Midas GTS project applications


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midas GTS project applications

“eurocodes and innovation” - · pdf file22 eurocodes and innovation midas civil...

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