midas civil ver.7.4.0 enhancements analysis & design

midas Civil ver.7.4.0 Enhancements

Analysis & Design1. Composite Plate Girder Design as per EN1994-2

2. Automatic generation of load combination as per EN1990

Pre/Post-Processing

3. Moving load analysis considering wheel spacing as per Indian code

4. Improvement on calculation method of Tendon Primary Moment

5. Improvement on UNI code concrete material DB

Pre/Post Processing1. Addition of Linear Constraints function

2. AASHTO LRFD Negative Live Load Moments

3. Effective Width Section Properties based on AASHTO LRFD: 2006

4. Nonlinear Temperature Gradient Model

5. Section shape display for irregular section imported from SPC

6. Addition of CEB-FIP 78 model code

7. Improvement on importing dxf file

8. Improvement on Iterative Unknown Load Factor Analysis

9. Fast display of removing hidden lines from Tapered Section Group

10. Default unit system is changed from kips-ft to kN-m

11. Section stiffness reflecting steel reinforcement in the construction stage

12. Display general link element deformations of Time History Analysis result

13 Improvements on calculation of Floor Load Data

2008.04MIDAS IT

13. Improvements on calculation of Floor Load Data

14. Pull-down Menu layout for Design is changed.

15. Web-based online manual including context-sensitive help

MIDAS Civil Integrated Solution SystemFor Bridge and Civil Structure 2008 Upgrade

Analysis & Design

1 C it Pl t Gi d D i EN1994 21. Composite Plate Girder Design as per EN1994-2Design > Composite Plate Girder Design

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Composite Plate Girder Modeling

• Composite Plate Girder Design as per EN1994-2 is newly implemented.

Effects & UsageEC4 Composite Plate Girder Design Parameter dialogEC4 Composite Plate Girder Design Parameter dialog

• Bending Resistance

• Resistance to Vertical Shear

• Resistance to Lateral-torsional Buckling

• Resistance to Transverse force

• Resistance to Longitudinal Shear• Resistance to Longitudinal Shear

• Resistance to Fatigue

Composite Plate Girder Result TableComposite Plate Girder Result Table


Analysis & Design

2 A t ti ti f l d bi ti EN19902. Automatic generation of load combination as per EN1990Result > Combination

• Load combination for ULS and SLS design as per EN1990 is automatically generated.

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• ψ factor for variable actions other than traffic loads is automaticallyentered during load combinations. For detailed explanation regardingtraffic loads, refer to the online manual “Load > Moving Load Analysis

Effects & Usage

Data > Moving Load Cases”.

Eurocode Moving Load Case dialogEurocode Moving Load Case dialog

Auto Generation of Load Combination dialogAuto Generation of Load Combination dialog


Analysis & Design

3 M i l d l i id i h l i I di d3. Moving load analysis considering wheel spacing as per Indian code

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Load > Moving Load Analysis Data > Traffic Line Lane

• By considering wheel spacing in moving load analysis, more accurate analysis results can be obtained.

Influence line resulting from moving load analysisInfluence line resulting from moving load analysis

Traffic line lane dialogTraffic line lane dialog


Analysis & Design

4 I t T d P i M t l l ti th d4. Improvement on Tendon Primary Moment calculation method

• Ver.7.3.0: The program internally recalculated Tendon Primary Moment considering the translation of neutral axis for the

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Ver.7.3.0: The program internally recalculated Tendon Primary Moment considering the translation of neutral axis for the construction stage analysis model.

• Ver.7.4.0: Tendon Primary Moment does not change regardless of the translation of neutral axis.


Analysis & Design

5 I t It li UNI d t t i l DB5. Improvement on Italian UNI code concrete material DB

• In the concrete material DB as per Italian UNI code, Rck10, Rck15 & Rck20 have been added.• In the old version cubic strength was used for design strength in Eurocode design In ver 7 4 0 it is corrected to

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• In the old version, cubic strength was used for design strength in Eurocode design. In ver.7.4.0, it is corrected to cylindrical strength.

• When the user opens a model file which is created in the old version, design strength will not be updated. However when the user opens the ‘Material Data’ dialog or ‘Modify Concrete Materials’ dialog and changes the material properties of UNI

Effects & Usage

UNI codeconcrete DB

Design Strength (MPa) Modulus of Elasticity (MPa)

old version ver 7 4 0 old version ver 7 4 0

the user opens the Material Data dialog or Modify Concrete Materials dialog and changes the material properties of UNI code, the design strength of all the UNI code assigned elements in the model file will be updated correct design strength.

concrete DB old version ver.7.4.0 old version ver.7.4.0

Rck 10 - 8 - 2.5331E+4

Rck 15 - 12 - 2.7085E+4

Rck 20 - 16 - 2.8607E+4

Rck 25 25 20 2.8500E+4 2.9961E+4

Rck 30 30 25 3.1220E+4 3.1475E+4

Rck 35 35 28 3.3721E+4 3.2308E+4

Rck 40 40 32 3.6049E+4 3.3345E+4

Rck 45 45 35 3.8236E+4 3.4077E+4

Rck 50 50 40 4 0305E+4 3 5220E+4Rck 50 50 40 4.0305E+4 3.5220E+4

2008 UpgradeMIDAS Civil Integrated Solution SystemFor Bridge and Civil Structure

Pre / Post-processing

1 Additi f Li C t i t f ti1. Addition of Linear Constraints function Model > Boundaries > Linear Constraints

U d C t t•A Linear Constraints function is newly implemented to constrain a specific node to subordinate to the movements of certain nodes.

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•Rigid Link can be applied in terms of global axis only. Using Linear Constraints, it enables to constrain displacement/rotation between nodes in terms of any axis as well as global axis.

Effects & Usage

Explicit TypeExplicit Type Weighted Displacement TypeWeighted Displacement TypeLinear Constraint DisplayLinear Constraint Display



2 AASHTO LRFD N ti Li L d M t2. AASHTO LRFD Negative Live Load MomentsLoad > Moving Load Analysis Data > Lane Support - Negative Moment at Interior Piers

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S t l i d t fi d ti t i t i d

• Negative moment zone by uniform load is automatically determined.

Effects & Usage

• Separate analysis procedure to find negative moment zone is not required.

Beam Moment Diagram due to uniform loadBeam Moment Diagram due to uniform load

Lane Supports (Negative moment at Inner Piers) dialogLane Supports (Negative moment at Inner Piers) dialog Lane supports are automatically assigned to the negative moment zone.



Step 1. Assign main girder elements to a group.

Model > Group > Define Structure Group

Step 2. Add the group in Auto Input box of the Lane Supports (Negative Moment at Interior Piers) dialog.

Load > Moving Load Analysis Data > Lane Support - Negative Moment at Interior Piers

St 3 Ch k th ti t i th t i d ft f i l iStep 3. Check the negative moment zone in the post-processing mode after performing analysis.

Group 1

[Step 1][Step 1] [Step 2][Step 2]

[Step 3][Step 3]



3 Eff ti Width S ti P ti b d AASHTO LRFD 20063. Effective Width Section Properties based on AASHTO LRFD: 2006Model > Structure Wizard > PSC Bridge > Effective Width Scale Factor

• Effective flange widths based on the AASHTO LRFD are automatically calculated.

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•By auto-calculating effective width section properties, modeling time will be significantly reduced.

• Calculated effective width by elements can be checked as shown in the figure

Effects & Usage

y gbelow.

Effective Width Scale Factor DialogEffective Width Scale Factor Dialog

Effective Width Calculation ResultEffective Width Calculation Result



4 N li T t G di t M d l4. Nonlinear Temperature Gradient ModelLoad > Temperature Load > Beam Section Temperature

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• Nonlinear temperature gradient for the PSC / Composite section can be entered.

Effects & Usage

•Section width for the PSC / Composite section with nonlinear temperature gradients is automatically calculated. (In the old version, section width was calculated for the PSC section with linear temperature gradients only.)

Beam Section Temperature DialogBeam Section Temperature Dialog Positive Vertical Temperature Gradient in Concrete & Steel SuperstructurePositive Vertical Temperature Gradient in Concrete & Steel Superstructure

In the old version In Ver.7.4.0



5 S ti h di l f i l ti i t d f SPC5. Section shape display for irregular section imported from SPCView > Display

•Section Shape Display function for irregular section imported from SPC is

Upgrade ContentsSection Shape Display function for irregular section imported from SPC is

newly implemented.

Hidden Surface viewHidden Surface view

Frame view with Section Shape display optionFrame view with Section Shape display optionFrame view with Section Shape display optionFrame view with Section Shape display option



6 Additi f CEB FIP 78 d l dModel > Properties > Time Dependent Material (Creep/Shrinkage)

6. Addition of CEB-FIP 78 model code

•CEB-FIP (1978) model code as well as CEB-FIP (1990) model code can be applied in the construction stage analysis.

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Time Dependent Material (Creep/Shrinkage) DialogTime Dependent Material (Creep/Shrinkage) Dialog

CEB-FIP Code (1978) Result View CEB-FIP Code (1978) Result View



7. Improvement on importing dxf fileFile > Import > AutoCAD DXF File

• Various polyline types such as triangle and rectangle can be imported to midas Civil as plate elements in a DXF format.

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Triangle polyline in AutoCADTriangle polyline in AutoCAD

Plate elements in midas CivilPlate elements in midas Civil



8 I t It ti U k L d F t A l i8. Improvement on Iterative Unknown Load Factor AnalysisResults > Unknown Load Factor

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• When calculating Unknown Load Factors through iteration, CS:Summation load case is used instead of CS: Dead Load and CS:Erection Load.

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• For the concrete cable-stayed bridge, optimal cable forces thatsatisfy the specific constraints of a structure can be determinedreflecting the creep and shrinkage effects. Program automatically

Effects & Usage

g p g g yiterates Unknown Load Factor analysis for the construction-stagemodel with the creep and shrinkage effects and finds the optimalcable forces.



9 F t di l f i hidd li f T d S ti G9. Fast display of removing hidden lines from Tapered Section GroupModel > Properties > Tapered Section GroupView > Remove Hidden Lines

• Display speed is reduced in removing hidden lines from beam elements to which Tapered Section Group is assigned.

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Model information V730 V740 Reduced time (Ratio)

Time required

Test example

Time required (sec.) 1,080 5 1/216

10. Default unit system is changed from kips-ft to kN-m.

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• Default unit system can be changed in the Tools>Unit System menu.

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11 S ti tiff fl ti t l i f t i t ti t11. Section stiffness reflecting steel reinforcement in construction stagesModel > Properties > Section > CompositeModel > Properties > Reinforcement of SectionsLoad > Construction Stage Analysis Data > Composite Section for C.S.

• Steel reinforcement entered in the deck of composite plate girder is considered in the construction stage analysis.

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• Cracked section properties of plate girders at the support region can be applied to the construction stage analysis. Stresses of steel reinforcement are calculated and provided in the table.

Effects & Usage

p



12 Di l l li k l t d f ti f Ti Hi t A l i lt12. Display general link element deformations of Time History Analysis resultModel > Results > Result Tables > Time History Analysis > General Link

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• General link element deformations of time history analysis results are tabulated in a Spread Sheet format.

Time History Analysis (General Link) TableTime History Analysis (General Link) Table

13 Improvements on calculation of Floor Load Data13. Improvements on calculation of Floor Load DataLoad > Define Floor Load TypeLoad > Assign Floor Load Type

Increase in speed of calculating Floor Load data

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Example Increase in speed of calculating Floor Load data

Model information Status Ver.7.2.1 Ver.7.4.0 Improvement

- Elements: 31859Story: 30 When calculating

Example

- Story: 30- Floor loads are assigned to all the floors.

floor loads before performing analysis

160 sec. 66 sec. 2.4 times

* Computer information: Intel(R) Pentium(R) 4 CPU 2.80GHz, 1GB RAM



14 P ll d M l t f D i i h d14. Pull-down Menu layout for Design is changed.

D i i t i d

Upgrade Contents• V730 • V740

• Design menu is categorized.

15. Web-based online manual including context-sensitive helpUpgrade Contents

•A web-based online manual is available. Pressing [F1] Key will open the web-based online manual provided that you are connected to the internet.

• Pressing the [F1] key gives the user context-sensitive help for all dialogs.

midas civil ver.7.4.0 enhancements analysis & design

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