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1
Design and Analysis of Pipe Support Steel Framing System
Using GTSTRUDL and Pre/Post Processor Computer Program
GTSTRUDL User’s Group Annual Meeting 2006GTSTRUDL User’s Group Annual Meeting 2006
June 22, 2006Tae-Kyou Lee
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GTSTRUDL User’s Group Annual Meeting 2006 2
Ⅰ. Introduction to Pipe Support
Ⅱ. Pipe Support Design
Ⅲ. Concrete Anchorage Design
Ⅳ. PSDAP
Ⅴ . Proposals and Questions
Contents
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GTSTRUDL User’s Group Annual Meeting 2006 3
Ⅰ. Introduction to Pipe Support
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GTSTRUDL User’s Group Annual Meeting 2006 4
<Yonggwang NPP>
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GTSTRUDL User’s Group Annual Meeting 2006 5
<Wolsong NPP>
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GTSTRUDL User’s Group Annual Meeting 2006 6
A structural system thattransmits supporting loads on
piping systems safely to the supporting building.
What is Pipe Support?What is Pipe Support?
ⅠⅠ. Introduction to Pipe Support - 1. Introduction to Pipe Support - 1
Definition of Pipe SupportDefinition of Pipe Support
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GTSTRUDL User’s Group Annual Meeting 2006 7
ⅠⅠ. Introduction to Pipe Support - 2. Introduction to Pipe Support - 2
Types of Pipe SupportsTypes of Pipe Supports
- Plate and Shell Type Support
- Linear Type SupportLinear Type Support
- Component StandardComponent Standard
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GTSTRUDL User’s Group Annual Meeting 2006 8
Steel Framing Pipe Support
Embeded Plate & Concrete Expansion Anchors.
- ASME Section III Division 1 Subsection NF “Support”- Korea Electric Power Industry Code(KEPIC) MNF
- ACI 349 Appendix B “Anchorage to Concrete”- ACI 318 Appendix D “Anchorage to Concrete”
ⅠⅠ. Introduction to Pipe Support - 3. Introduction to Pipe Support - 3
Codes for Pipe Support DesignCodes for Pipe Support Design
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GTSTRUDL User’s Group Annual Meeting 2006 9
ASME NF : Supports
ACI 349-01Anchorage
Typical Examples of Jurisdictional Boundaries
Between Piping Supports & Building Structure
ⅠⅠ. Introduction to Pipe Support - 4. Introduction to Pipe Support - 4
Codes for Pipe Support Design (Continue)Codes for Pipe Support Design (Continue)
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GTSTRUDL User’s Group Annual Meeting 2006 10
Ⅱ. Pipe Support Design
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GTSTRUDL User’s Group Annual Meeting 2006 11
- Check feasibility- Pipe Support 3D CAD
Modeling using Support Modeler
- Select Embedment Plate
- Verify constructivity of piping & supports
- Piping Subsystem freeze
- Pipe Support Design : ASME III NF, AISC-ASD
- Anchor Design : ACI 349, ACI 318
- Weld & Local stress check : AWS D 1.1
ASME NF
- 2D Microstation : Support Configuration
- 3D CAD Model : Bill of Material, Load &
Displacement, Information in title block, etc.
ⅡⅡ. Pipe Support Design - 1. Pipe Support Design - 1
Pipe Support Design Process in Korea NPPPipe Support Design Process in Korea NPP
Walkdown Pipe Support Analysis & Design
Pipe Support
Sketch &
Modeling
Pipe Support Drawing
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GTSTRUDL User’s Group Annual Meeting 2006 12
- Construction
- Test
- Normal
- Severe Environmental Condition
- Abnormal
- Extreme Environmental Condition
- Severe Environmental / Abnormal
- Extreme Environmental / Abnormal
Load Condition
Loads and Load CombinationsLoads and Load Combinations
ⅡⅡ. Pipe Support Design - 2. Pipe Support Design - 2
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GTSTRUDL User’s Group Annual Meeting 2006 13
Seismic Loads
Loads and Load Combinations (Continue)Loads and Load Combinations (Continue)
ⅡⅡ. Pipe Support Design - 3. Pipe Support Design - 3
<FRS for each damping value >
2% damping
4% damping
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GTSTRUDL User’s Group Annual Meeting 2006 14
- Service Level A Load
- Thermal movements greater than 1/16”
- F = μ x (Dead load + Thermal load)
Frictional Forces (Due to Thermal Movement)
ⅡⅡ. Pipe Support Design - 4. Pipe Support Design - 4
Loads and Load Combinations (Continue)Loads and Load Combinations (Continue)
Dead + Thermal
Friction Force
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GTSTRUDL User’s Group Annual Meeting 2006 15
Normal Stress
Allowable StressesAllowable Stresses
ⅡⅡ. Pipe Support Design - 5. Pipe Support Design - 5
0.1w
w
c
c
b
b
a
a
F
f
F
f
F
f
F
f
wcba ffff ,,,
wcba FFFF ,,,
: Actual Normal Stress
: Allowable normal Stress
Distinct from ASD
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GTSTRUDL User’s Group Annual Meeting 2006 16
Shear Stress
Allowable StressesAllowable Stresses
ⅡⅡ. Pipe Support Design - 6. Pipe Support Design - 6
: Shear Area
: Thickness
fv hA
T
J
Tt
A
Vf
: Actual Shear Stress
: Shear Force
: Torsion Force
: Torsional Constant
vf
VTJ
At
ftdh
fff tbA
vF : Allowable Shear Stress
0.1v
v
F
f
Distinct from ASD
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GTSTRUDL User’s Group Annual Meeting 2006 17
Shear stress : 0.95 Fy/
Tensile stress, Bending stress : 0.95Fy
Compression Stress : 2/3 Fcr (Fcr : critical buckling stress)
Maximum Stress
ⅡⅡ. Pipe Support Design - 7. Pipe Support Design - 7
Maximum StressesMaximum Stresses
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GTSTRUDL User’s Group Annual Meeting 2006 18
- Safety-related : 1/16 inch
- Non-safety-related : 1/8 inch
- The deflection and rotation of the building structure
shall not be considered.
Allowable DeflectionAllowable Deflection
ⅡⅡ. Pipe Support Design - 8. Pipe Support Design - 8
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GTSTRUDL User’s Group Annual Meeting 2006 19
Local Stress Check (KOPEC Standard)Local Stress Check (KOPEC Standard)
Lf
LF
1C
2C
af
vf
rF
Actual Local Stress
Allowable Local Stress
Modification factor for bending Stress
Modification factor for Shear Stress
Actual Axial Stress
Actual Shear Stress
Allowable Stress
21
22
21 )(75.0)(32 abxvr
abxLL ffCfCF
ffCFf
Local Stress
Check !
ⅡⅡ. Pipe Support Design - 9. Pipe Support Design - 9
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GTSTRUDL User’s Group Annual Meeting 2006 20
Ⅲ. Concrete Anchorage Design
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GTSTRUDL User’s Group Annual Meeting 2006 21
hef
Cast-In-Place Anchor
Post-Installed Anchor
Types of AnchorTypes of Anchor
ⅢⅢ. Anchorage Design - 1. Anchorage Design - 1
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GTSTRUDL User’s Group Annual Meeting 2006 22
Types of AnchorTypes of Anchor
ⅢⅢ. Anchorage Design - 2. Anchorage Design - 2
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GTSTRUDL User’s Group Annual Meeting 2006 23
Failure Mode of Anchor SystemFailure Mode of Anchor System
ⅢⅢ. Anchorage Design - 3. Anchorage Design - 3
- Anchor Steel Tension Failure
- Concrete Breakout
- Concrete Pullout
- Concrete Side Face Blowout
Tension Failure of Anchor System
- Anchor Steel Shear Failure
- Concrete Pryout
- Concrete Breakout
Shear Failure of Anchor System
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GTSTRUDL User’s Group Annual Meeting 2006 24
2.1V
V
N
N
N2.0NandV2.0V)3
OKisVV,N2.0N)2
OKisNN,V2.0V)1
n
u
n
u
nunu
unnu
unnu
2.1V
V
N
N
nInteractioTrilinear
n
u
n
u
nV2.0
nN2.0
0.1)V
V()
N
N(
nInteractioElliptical
3
5
n
u3
5
n
u
nV
nN
uN
uV
Tension – Shear InteractionTension – Shear Interaction
ⅢⅢ. Anchorage Design - 4. Anchorage Design - 4
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GTSTRUDL User’s Group Annual Meeting 2006 25
Ⅳ. PSDAP
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GTSTRUDL User’s Group Annual Meeting 2006 26
- Design & Analysis Pipe Support According to ASME NF and ACI349
- User Friendly Program Using GUI and New Concept of Beta Angle
- Automatic Execution of GTSTRUDL
- Local Stress Check
- Evaluation of Concrete Anchorage System
Features of PSDAPFeatures of PSDAP
ⅣⅣ. PSDAP - 1. PSDAP - 1
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GTSTRUDL User’s Group Annual Meeting 2006 27
Input FileInput File
Local StressesLocal StressesCalculationCalculation
&&Pipe Support Pipe Support
Steel Framing DesignSteel Framing Design
Integration ofIntegration ofPipe Support Pipe Support Steel FramingSteel Framing
&&Anchor systemAnchor systemDesign ResultsDesign Results
PSDAP
Generating GTSTRUDL Input FileCalculating Member Forces, Joint Reactions, Weld Sizes, Deflection andAuxiliary Member Interaction Ratios
Anchor Design
Non-linear Static Analysis of Anchor SystemCheck Anchor Interaction RatioCheck Plate Interaction Ratio.
Concept ofConcept of Pipe Support Design in PSDAPPipe Support Design in PSDAP
ⅣⅣ. PSDAP - 2. PSDAP - 2
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GTSTRUDL User’s Group Annual Meeting 2006 28
Input FileInput File
Non LinearNon LinearStaticStatic
AnalysisAnalysisUsing GTSTRUDLUsing GTSTRUDL
Evaluation of Evaluation of AnchorAnchorSystemSystem
Pre-Processor
• Generating GTSTRUDL Input File• Generating Non-linear Spring andDistributing Applied Loads to PlateJoint with Constraints
• Executing GTSTRUDL
Post-Processor
• Calculating eccentricities of anchor load • Evaluation of Anchor System using Anchor Result of GTSTRUDL
Concept of Anchorage Design in PSDAPConcept of Anchorage Design in PSDAP
ⅣⅣ. PSDAP - 3. PSDAP - 3
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GTSTRUDL User’s Group Annual Meeting 2006 29
- KOPEC.DS Korean Standard rolled shape database file
- PSDAP.CFG Indicate running path of “GTSTRUDL”, “ULTRA-EDITOR”, “MS-WORD” executing file. Load Factor and Load Combinations.
- EMBTYPE.TXT File of embedded plate & anchor properties
-.PST Basic file for pipe support design
-.INP Input file for anchor design
- kvalue.txt Database file of k1 & k values of member
Inputs of PSDAPInputs of PSDAP
ⅣⅣ. PSDAP - 4. PSDAP - 4
Data & Configuration Files
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GTSTRUDL User’s Group Annual Meeting 2006 30
< Drawing >
< PSDAP input file >
ⅣⅣ. PSDAP - 5. PSDAP - 5
Inputs of PSDAPInputs of PSDAP
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GTSTRUDL User’s Group Annual Meeting 2006 31
PIPE SUPPORT NO
JOINT COORDINATES
MEMBER INCIDENCES
WELD
LOADING ‘RO’ / LOADING ‘RA’
LOAD COMBINATION
ANCHOR INFORMATION
Inputs of PSDAP (Continue)Inputs of PSDAP (Continue)
ⅣⅣ. PSDAP - 6. PSDAP - 6
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GTSTRUDL User’s Group Annual Meeting 2006 32
- X, Y, Z coordination, type and attached plan of Embedded Plate , , target member
- If target member indication was omitted, “PSDAP” asks to input target member.- If a member is welded to building steel structure, user shall indicate the conne- ction type as one of the following 4 examples.
<IPW1> <IPF1> <IPW2> <IPF2>
PIPE SUPPORT NO Drawing Number
JOINT COORDINATES
Inputs of PSDAP (Continue)Inputs of PSDAP (Continue)
ⅣⅣ. PSDAP - 6. PSDAP - 6
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GTSTRUDL User’s Group Annual Meeting 2006 33
Member Incidences Member number, start & end joint of member, beta angle, member profile name.
Weld - W shapes : Default Config. No. = 112
- Structural Tubing : Default Config. No. = 154
- User can change the weld configuration with indicating joint No., incident
member No. , weld configuration No. as follows.
ex> Weld
8 7 114
ⅣⅣ. PSDAP - 7. PSDAP - 7
Inputs of PSDAP (Continue)Inputs of PSDAP (Continue)
Config. No. : 112 154 114
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GTSTRUDL User’s Group Annual Meeting 2006 34
LOADING ‘RO’ / LOADING ‘RA’
- Loading joint, forces, moments (Global coordination)
-‘RO’ : Reactions of pipe, cable tray, duct supports and ties
-‘RA’ : Accident reactions of Pipe, Cable tray and duct supports and ties.
ⅣⅣ. PSDAP - 8. PSDAP - 8
Inputs of PSDAP (Continue)Inputs of PSDAP (Continue)
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GTSTRUDL User’s Group Annual Meeting 2006 35
- Indicate “Service Level” that user wants to analysis. - More than 2 Service Level can be inputted at once
ex)LOAD COMBINATIONB,D
- PSDAP applies default load combination as follows. ANC_A = 1.4(DEAD) + 1.4(RO) ANC_B = 1.4(DEAD) + 1.4(RO) + 1.9(OBE) ANC_D = DEAD + RA + SSE STL_A = DEAD + RO STL_B = DEAD + RO + OBE STL_D = DEAD + RA + SSE
Load Combination
ⅣⅣ. PSDAP - 9. PSDAP - 9
Inputs of PSDAP (Continue)Inputs of PSDAP (Continue)
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GTSTRUDL User’s Group Annual Meeting 2006 36
- Information of Embedded Plate installation.
- Joint : Joint No. where embedded plate is installed
- Angle : Curved angle of anchor
- FC : Compressive Strength of Concrete(Ksi)
- EDPX : Distance from the center of an anchor to the concrete edge
in “+X” direction- EDMX : Distance from the center of an anchor to the concrete edge in “-X” direction- EDPY : Distance from the center of an anchor to the concrete edge in “+Y” direction- EDMY : Distance from the center of an anchor to the concrete edge in “-Y” direction
- D : Depth of concrete
- DX : Eccentricity of embedded plate in “+X” direction
- DY : Eccentricity of embedded plate in “+Y” direction
- COND : Whether concrete is cracked or not
Anchor Information
ⅣⅣ. PSDAP - 10. PSDAP - 10
Inputs of PSDAP (Continue)Inputs of PSDAP (Continue)
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GTSTRUDL User’s Group Annual Meeting 2006 37
Inclined member attached to the
embedded plate should be shown
as follows.
< Definition of Embedded Plate Attached Plan>>
+Y Plan+Y Plan
+X Plan+X Plan
+Z Plan+Z Plan
ex)joint X Y Z Emb. type Attached plan 8 20 15 0 D1 plan :+X
ⅣⅣ. PSDAP - 11. PSDAP - 11
Inputs of PSDAP (Continue)Inputs of PSDAP (Continue)
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GTSTRUDL User’s Group Annual Meeting 2006 38
Beta Angle of GTSTRUDLBeta Angle of GTSTRUDL
ⅣⅣ. PSDAP - 12. PSDAP - 12
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GTSTRUDL User’s Group Annual Meeting 2006 39
Beta Angle of GTSTRUDL (Continue)Beta Angle of GTSTRUDL (Continue)
ⅣⅣ. PSDAP - 13. PSDAP - 13
<Beta Angle = 90><Beta Angle = 0>
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GTSTRUDL User’s Group Annual Meeting 2006 40
<Beta Angle = 0>
1 Dimension
Beta Angle of PSDAPBeta Angle of PSDAP
ⅣⅣ. PSDAP - 14. PSDAP - 14
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GTSTRUDL User’s Group Annual Meeting 2006 41
<Beta Angle = 0>
2 Dimension
Beta Angle of PSDAP (Continue)Beta Angle of PSDAP (Continue)
ⅣⅣ. PSDAP - 15. PSDAP - 15
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GTSTRUDL User’s Group Annual Meeting 2006 42
<Beta Angle = 0>
3 Dimension Reference Axis = Direction of Bracing (“Y” at following support)
ⅣⅣ. PSDAP - 16. PSDAP - 16
Beta Angle of PSDAP (Continue)Beta Angle of PSDAP (Continue)
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GTSTRUDL User’s Group Annual Meeting 2006 43
- _STL.GTI GTSTRUDL Input file for analysis of pipe support auxiliary steel frame.
- _ANC.GTI GTSTRUDL Input file for analysis of anchor system.
- .SSC 2D(.SSC) and 3D(_3.SSC) graphic file of pipe support.
- .CCD Result file of anchor system analysis.
- .PSD Result file of anchor system and pipe support auxiliary steel frame.
Output Files of PSDAPOutput Files of PSDAP
ⅣⅣ. PSDAP - 17. PSDAP - 17
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GTSTRUDL User’s Group Annual Meeting 2006 44
- G-Value and Load Combinations
- Input file
- Max deflection in “X”, “Y”, “Z” direction
- Member interaction ratios
- Local stress & weld result
- Result of anchor and plate analysis
- Result of anchor and plate analysis
- GTSTRUDL Output
Outputs of PSDAPOutputs of PSDAP
ⅣⅣ. PSDAP - 18. PSDAP - 18
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GTSTRUDL User’s Group Annual Meeting 2006 45
Execution of PSDAPExecution of PSDAP
ⅣⅣ. PSDAP - 19. PSDAP - 19
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GTSTRUDL User’s Group Annual Meeting 2006 46
Users can check Users can check result more result more
detail by detail by selecting filesselecting files
Users can check Users can check the shape of the shape of
pipe support in pipe support in 2D and/or 3D2D and/or 3D
Execution of PSDAP (Continue)Execution of PSDAP (Continue)
ⅣⅣ. PSDAP - 20. PSDAP - 20
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GTSTRUDL User’s Group Annual Meeting 2006 47
Ⅴ . Proposals and Questions
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GTSTRUDL User’s Group Annual Meeting 2006 48
Warping Boundary ConditionWarping Boundary Condition
Pin-Fix VS Fix – Pin
- What’s different ?
- Should I decide which end of a member is fixed?
PinFixFixPin
Ⅴ Ⅴ . . ProposalsProposals and Questions - 1and Questions - 1
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GTSTRUDL User’s Group Annual Meeting 2006 49
ProposalProposal
There are only 2 configurations of member to
member connection at GTSTRUDL. User inputs the thickness of flange or web of a target member as the
thickness of base plate.
GTSTRUDL does not calculate local stress.
Ⅴ Ⅴ . . ProposalsProposals and Questions - 2and Questions - 2
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GTSTRUDL User’s Group Annual Meeting 2006 50
AWS D1.1- Stresses of shear on effective area of weld < 0.3 x Tensile Strength
- Stress at base metal net section shear area < 0.4 x Yield strength.
GTSTRUDLDoes GTSTRUDL always use 0.3 x Tensile Strength as allowable stress in
connection section ?
Does GTSTRUDL Consider every section from I ~V ?
Does GTSTRUDL Consider Base Plate shear Stress?Does GTSTRUDL Consider Base Plate shear Stress?
Ⅴ Ⅴ . . ProposalsProposals and Questions - 3and Questions - 3
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GTSTRUDL User’s Group Annual Meeting 2006 51
Thank youThank you