midas Gen Tutorial Eurocode Design of Multi-story RC Building Eurocode Design of a Multi-story RC Building Part I – EC2 in Gen P II Mdl&D i P Part III – ULS Member Design Part II – Model & Design Parameters Part IV – ULS Member Checks Part V – SLS Member Checks MIDAS Information Technology Co., Ltd. MIDAS Information Technology Co., Ltd. 1
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Eurocode Design of a Multi-story g yRC Building
Part I – EC2 in Gen
P II M d l & D i P
Part III – ULS Member Design
Part II – Model & Design Parameters
U S e be es g
Part IV – ULS Member Checks
Part V – SLS Member Checks
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Eurocode Design of Reinforced Concrete Building EN 1992 1 1 2004as per EN 1992-1-1: 2004
OverviewOverviewEurocode Design of Reinforced Concrete BuildingModel- 6-story Reinforced Concrete Building- Element: Wall, BeamL d & B d C ditiLoad & Boundary Condition- Self Weight- Floor Loads- Wind Loads
Seismic Loads- Seismic Loads- SupportsAnalysis- Linear Static Analysis
Program Version V7.4.1
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Program License Registered, Trial
Revision Date 2008.07.30
Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Reinforced Concrete Design Features in midas GenGen provides automatic design for beam, column and shear wall. Isolated footing design is not applicable to Eurocode 2.
Section checking with the given data.
Ultimate limit state and Serviceability limit state design and/or checking.
Default load combinations as per Eurocode 2.
Static wind loads as per Eurocode 1 4: 2005Static wind loads as per Eurocode 1-4: 2005
Static seismic loads and response spectrum function as per Eurocode 8-1: 2004
Capacity design as per Eurocode 8-1 is not applicable.
Available Section shapes
Column: Rectangle, Circular, Hollow circular
Wall: RectangleWall: Rectangle
Beam: Rectangle, T-shape
Note:
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Torsion should be checked by the user.
Iregular wall such as L or H shape cannot be designed.
Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Beam design
Beam section size (b, h)
The following data are required to be input for Beam design:
Cover to rebar center
Bar size
Main rebar: Up to 5 sizes simultaneously selected which GEN will use
( ){ }mmmmhdefault 2.76,5.63,10maxmin=
Main rebar: Up to 5 sizes simultaneously selected, which GEN will use to find the most appropriate.
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Shear Wall designFollowings are the design results provided by Gen:
Vertical rebar
Spacing of vertical rebar
Capacity ratio for the most critical part among top and bottom of wall
Uniaxial P M interaction diagramUniaxial P-M interaction diagram
Horizontal
Required rebar area per unit length
Spacing of horizontal rebar
Capacity ratio for the most critical part among top and bottom of wall
Check for crushing of compression strutsCheck for crushing of compression struts
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
PART II PART II -- ContentsContents
The Model FilePerforming the AnalysisDesign ParametersULS Design
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Typical Floor Plan
9000 mm 9000 mm 9000 mm 9000 mmm
5100
mm
mm
0 m
m51
00
7200
0 m
m51
0010
0 m
m
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Typical Sectional Elevation00
mm
400
4000
mm
m40
00 m
m45
00 n
mnm
0 m
m45
00
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5000
Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Opening the Pre-generated Model File
1. File > Open Project…
2. Select “EC2 Design”.
3 Click [Open] button2 3. Click [Open] button.2
This tutorial is intended to illustrate design procedure as per Eurocode2. Therefore, the geometry creation, boundary assignment load application will be skipped
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assignment, load application will be skipped. For the aforementioned, refer to “Seismic Design for RC Building” tutorial.
In this tutorial, slab is not included in the model and considered as a rigid diaphragm.
Analysis
model and considered as a rigid diaphragm.
1. Analysis > Perform Analysis
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Parameters for ULS Design
• Load Combinations
• Design Code
• Sway Frame Definitions y f
• Member Assignment
• Live Load Reduction Factor Modifications
• Unbraced Lengths (L, Lb)
• Partial Safety Factors
• Concrete and Rebar Properties
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Load Combinations
41. Results > Combinations…
2. Click on “Concrete Design” tab.
3. Click [Auto Generation…] button.
4 Option: Add
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4. Option: Add
5. Code Selection: Concrete
6. Design Code: Eurocode2:04
7. Click [OK] Button.
8. Click [Close] Button.
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The program automatically creates design load combinations which can be also modified or deleted by the user.
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deleted by the user.
Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
ULS Design
Concrete Beam Design
Section for Design1
Concrete Column Design
Concrete Wall Design
1. The “Section for Design” function provides Member design of concrete sections based on the section data defined by the user. It allows you to find the appropriate section without re-analysis.
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
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41. As with Beam we may check [Detail…] &
[Summary…] results. 2. As with Column we may Draw PM Curve.
5 1
2
Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Concrete Wall Design (2)
5. Click [Graphic…] button.
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Manually Entering Rebar and ULS Checking
Enter Rebar Data using “Design > Concrete Design Parameter > Modify Beam/Column/Wall Section Data” or “Design > Concrete Code Design > Beam/Column/Wall Design > [Update Rebar] button”1 Design > Beam/Column/Wall Design > [Update Rebar] button1
1. In this tutorial, “Modify Beam Section Data” will only be illustrated. In the same manner, Column and Wall Section Data can also be defined.
1. Rebar will be MANUALLY entered using “Design > Concrete Design Parameter > Modify Beam/Column/Wall Section Data”
1. Rebar can be AUTOMATICALLY entered using “Design > Concrete Code Design > Beam/Column/Wall g g gDesign > [Update Rebar] button” (this is illustrated later).
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building
Once the load combinations are generated using “Auto Generation” as per Eurocode2 as in Step 3-1, the program automatically assigns the “Quasi-permanent” “Frequent” and “Characteristic” loadpermanent”, “Frequent” and “Characteristic” load combinations.
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Fundamentalsmidas Gen Tutorial Eurocode Design of Multi-story RC Building