midas Gen Training Serieslatinamerica.midasuser.com/web/upload/sample/Gen-GTSNX_soil_spri… ·...
Transcript of midas Gen Training Serieslatinamerica.midasuser.com/web/upload/sample/Gen-GTSNX_soil_spri… ·...
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midas Gen Training SeriesBOUNDARY CONDITION COMPARISON
FOR STEEL BUILDING DESIGN
Angel Francisco Martinez
• Civil Engineer
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BOUNDARY CONDITION COMPARISON
FOR STEEL BUILDING DESIGN
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Dimensions70m
48m
64m
48m
64m
6m
70m
3.8m
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Inspect Properties
• Material-Steel ASTM A36
-Concrete ASTM Grade C4000
• 9 Sections
Steel Section Concrete
C1 W18x258 0.7 X 0.7 m
C2 W18x211 0.7 X 0.7 m
SG1 W24x76 na
C3 W12x152 0.7 X 0.7 m
C4 W14x159 0.7 X 0.7 m
C5 W18x283 na
SG1 W24x76 na
BR1 W10x60 Na
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Boundary Conditions
• Assign fixed all SUPPORTS to bottom nodes (footing)
1. Node/Element > Supports
2. Fix all DOF’s3. Select base nodes
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Perform Analysis
1. Run model with fixedbase
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Results: Deformations
• Check Deformations
1. Results > Deformations > Displacements Contours
2. DXYZ under Self Weight Load
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Results: Reactions
• Check Vertical Reactions
1. Results > Reactions > FZ
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Update File for Soil Springs
1. Save As Soil Springs Constant File2. Delete Fixed Boundary
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Apply Spring Supports
• Assign Constant Soil Springs to bottom nodes (footing)
1. Node/Element > Spring Supports
2. Fix all DOF’s except SDz3. Select base nodes4. Apply SDz 15000 kN/m Spring stiffness
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Results: Settlement
• Run Analysis, Check Deformations
1. Results > Deformations > Displacements Contours
2. DXYZ under Self Weight Load
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Export to GTS NX
1. Export Building in MXT File to GTS NX2. Export Reactions DZ Nodal Results to GTS NX for FIXED BC
New Option inGen 2017v3.1
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Spring Stiffness Calculation
1. Import Structurefrom Gen for node location info
2. Import Ground CAD Geometry
New Option inGTS NX 2017
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Soil Springs from GTS NX
1. 3D Finite Element soil layers2. Import Reactions from Gen file3. Delete Building model
New Option inGTS NX 2017
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Extract Results, Export to Excel
1. Settlement Results can be probed into table
2. Copy results into Excel Sheet
New Option inGTS NX 2017
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Update Springs in Gen
1. Get Spring Stiffness K from Geotechnical engineer.
2. K = Reactions RZ / settlement DZ3. Update springs in Gen model
Spring Stiffness table
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Perform Analysis
1. Run model with updated soil springs
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Fixed BC Soil Spring
Result Comparison
Deformation vs Settlement
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Steel CODE CHECK
1. Create Load Combinations for Steel Design with Design Code: AISC 14
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Steel CODE CHECK
1. Run Steel Code Check
2. Select Section 221 and Click Graphic to see detail report
3. Check Results
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1. Run Steel Optimal Design
2. Analysis Option > 3 repetitions
3. Select All > Run Design
Steel Optimal Design
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1. 1st Design Iteration, 1 section still fail2. 2nd Design iteration, all sections pass3. 3rd iteration was no necessary, no cha
nges in section. Click Graph Report4. Model Update Sections
Steel Optimal Design
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Steel Optimal Design
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Results after steel design
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SRC CODE CHECK
1. Create Load Combinations for SRC Design with Design Code: SSRC79
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SRC Concrete Design
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SRC CODE CHECK
1. Run SRC Design > Code Check > Column Checking
2. Select Section 69 3. Click Graphic to see detail report
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SRC DESIGN
1. Run SRC Design > Optimal Design2. Select 2013. Analysis Option > 3 repetitions4. Design > Update Model
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SRC Concrete Design
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After SRC Design
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Steel Plants
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Detail Section Report
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Stadium
Beijing National Stadium, China
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Airports
Beijing Airport, China
Inchon Airport,
S. Korea
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