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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 2006 GTSTRUDL User’s Group Annual Meeting 2006 June 22, 2006 Tae-Kyou Lee
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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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Ⅰ. Introduction to Pipe Support

Ⅱ. Pipe Support Design

Ⅲ. Concrete Anchorage Design

Ⅳ. PSDAP

Ⅴ . Proposals and Questions

Contents

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Ⅰ. Introduction to Pipe Support

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<Yonggwang NPP>

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<Wolsong NPP>

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A structural system that

transmits supporting loads onpiping 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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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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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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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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Ⅱ. Pipe Support Design

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- 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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- Construction

- Test

- Normal

- Severe Environmental Condition

- Abnormal

- Extreme Environmental Condition

- Severe Environmental / Abnormal

- Extreme Environmental / Abnormal

Load ConditionLoads and Load CombinationsLoads and Load Combinations

ⅡⅡ. Pipe Support Design - 2. Pipe Support Design - 2

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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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- 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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Normal Stress

Allowable StressesAllowable Stresses

ⅡⅡ. Pipe Support Design - 5. Pipe Support Design - 5

0.1w

w

c

c

b

b

a

a

Ff

Ff

Ff

Ff

wcba ffff ,,,

wcba FFFF ,,,

: Actual Normal Stress

: Allowable normal Stress

Distinct from ASD

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Shear StressAllowable StressesAllowable Stresses

ⅡⅡ. Pipe Support Design - 6. Pipe Support Design - 6

: Shear Area

: Thickness

fv hA

TJTt

AVf

: Actual Shear Stress

: Shear Force

: Torsion Force

: Torsional Constant

vf

VTJ

At

ftdh

fff tbA

vF : Allowable Shear Stress

0.1v

v

Ff

Distinct from ASD

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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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- 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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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 ffCfCFffCFf

Local Stress

Check !

ⅡⅡ. Pipe Support Design - 9. Pipe Support Design - 9

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Ⅲ. Concrete Anchorage Design

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hef

Cast-In-Place Anchor

Post-Installed Anchor

Types of AnchorTypes of Anchor

ⅢⅢ. Anchorage Design - 1. Anchorage Design - 1

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Types of AnchorTypes of Anchor

ⅢⅢ. Anchorage Design - 2. Anchorage Design - 2

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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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2.1V

VN

NN2.0NandV2.0V)3OKisVV,N2.0N)2OKisNN,V2.0V)1

n

u

n

u

nunu

unnu

unnu

2.1V

VN

NnInteractioTrilinear

n

u

n

u

nV2.0

nN2.0

0.1)V

V()N

N(

nInteractioElliptical

35

n

u35

n

u

nV

nN

uN

uV

Tension – Shear InteractionTension – Shear Interaction

ⅢⅢ. Anchorage Design - 4. Anchorage Design - 4

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Ⅳ. PSDAP

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- 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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Input FileInput FileLocal StressesLocal Stresses

CalculationCalculation&&

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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Input FileInput FileNon LinearNon Linear

StaticStaticAnalysisAnalysis

Using 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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- 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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< Drawing >

< PSDAP input file >

ⅣⅣ. PSDAP - 5. PSDAP - 5

Inputs of PSDAPInputs of PSDAP

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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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- 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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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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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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- 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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- 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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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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Beta Angle of GTSTRUDLBeta Angle of GTSTRUDL

ⅣⅣ. PSDAP - 12. PSDAP - 12

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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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<Beta Angle = 0>

1 Dimension

Beta Angle of PSDAPBeta Angle of PSDAP

ⅣⅣ. PSDAP - 14. PSDAP - 14

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<Beta Angle = 0>

2 Dimension

Beta Angle of PSDAP (Continue)Beta Angle of PSDAP (Continue)

ⅣⅣ. PSDAP - 15. PSDAP - 15

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<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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- _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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- 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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Execution of PSDAPExecution of PSDAP

ⅣⅣ. PSDAP - 19. PSDAP - 19

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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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Ⅴ . Proposals and Questions

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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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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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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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Thank youThank you