SEASTATE.LOADOUT.

Modifying model and seastate input file to only include jacket for load out

1) Modify the structure to include jacket structure only

Use Precede to open the model, delete the deck structure, piles, conductors, and wishbones; delete footprint weight EQPT.

Using “Display” > “Zoom Box” > “Translate/Rotate” > “General”, select the whole structure, pick rotation angle about Y, input rotation angle -90.0, input Z translation = 11.0 m to rotate and move the structure.

Using “Display” > “Zoom Box” > “Translate/Rotate” > “General” again, select the whole structure, pick rotation angle about Z, input rotation angle 180.0 rotate the structure to final fabrication position.

Delete all existing Ky, Kz, Ly, and Lz definitions, and add Kz and Lz definitions for jacket horizontal framings and X braces.

Add joints C101, C103, C201, C203, C301, C303, C401, and C403 relative to 101L, 103L, 201L, 203L, 301L, and 303L correspondingly with dZ = -1.75; Add joints D101, D103, D201, D203, D301, D303, D401, and D403 relative to C101, C103, C201, C203, C301, C303, C401, and C403 correspondingly with dZ = -1.75; Connecting these joints vertically with members using member group label set to CAN.

Modifying members D101-C101, D103-C103, D201-C201, D203-C203, D301-C301, D303- C303, D401-C401 to compression only members.

Modifying members C101-101L, C103-103L, C201-201L, C203-203L, C301-301L, C303- 303L C401-401L, and C403-403L to set joint B offsets -61.6 cm in global Z directions. Set joint fixity 001000 to joints D101, D103, D201, D203, D301, D303, D401, and D403; Set joint fixity 110000 to joints C101, C105, C201, C205, C301, C303, C401, and C403. Define member properties for CAN: Member group CAN, Diameter = 76.20 cm, Wall Thickness = 2.54 cm

The added member group CAN, members and joints shall looks like following: SACS System Training 2011

Gap Loadout - 2 --- GRUP CAN 76.200 2.540 20.007.72424.80 1 1.001.00 0.500 7.8490 … MEMBER D103C103 CAN C MEMBER1C103103L CAN MEMBER OFFSETS -61.60 MEMBER D203C203 CAN C MEMBER1C203203L CAN MEMBER OFFSETS -61.60 MEMBER D303C303 CAN C MEMBER1C303303L CAN MEMBER OFFSETS -61.60 MEMBER D101C101 CAN C MEMBER1C101101L CAN MEMBER OFFSETS -61.60

MEMBER D201C201 CAN C MEMBER1C201201L CAN MEMBER OFFSETS -61.60 MEMBER D301C301 CAN C MEMBER1C301301L CAN MEMBER OFFSETS -61.60 MEMBER D401C401 CAN MEMBER1C401401L CAN MEMBER OFFSETS -61.60 … JOINT C101 -79.500 13.350 1.750 110000 JOINT C103 -79.500-13.350 1.750 110000 JOINT C201 -50.000 10.400 1.750 110000 JOINT C203 -50.000-10.400 1.750 110000 JOINT C301 -21.000 7.500 1.750 110000 JOINT C303 -21.000 -7.500 1.750 110000 JOINT C401 2.000 5.200 1.750 110000 JOINT C403 2.000 -5.200 1.750 110000 JOINT D101 -79.500 13.350 0.000 001000 JOINT D103 -79.500-13.350 0.000 001000 JOINT D201 -50.000 10.400 0.000 001000 JOINT D203 -50.000-10.400 0.000 001000 JOINT D301 -21.000 7.500 0.000 001000 JOINT D303 -21.000 -7.500 0.000 001000 JOINT D401 2.000 5.200 0.000 001000 JOINT D403 2.000 -5.200 0.000 001000 --- 2) Modify the SeaState input file

Revise the mudline elevation and water depth to be 0.00.

Remove HYDRO, HYDRO2, AMOD, CDM, marine growth, and group override cards; remove all load cases.

Add load case DEAD to include only structural selfweight; Use weight selection line

INCWGT to include the gravity effects from weight groups ANOD, LPAD and WKWY

into load case DEAD.

Add 5 load combinations named as ALLS, LOS1, LOS2, LOS3 and LOS4 to combine

DEAD with a load factor 1.0, and representing all supports effective and 2 out of 8 supports

lost for each following load combination. SACS System Training 2011

Gap Loadout - 3

Add gap load case selection LCSEL line to include ALLS, LOS1, LOS2, LOS3 and LOS4 for gap analysis.

The SeaState input file shall look like following:

--- LDOPT NF+Z1.0280007.849000 GLOBMN NPNP K

LCSEL GP ALLS LOS1 LOS2 LOS3 LOS4 FILE B CENTER CEN1 LOAD LOADCNDEAD INCWGT ANODLPADWKWY DEAD DEAD -Z M LCOMB

LCOMB ALLS DEAD1.0000 LCOMB LOS1 DEAD1.0000 LCOMB LOS2 DEAD1.0000 LCOMB LOS3 DEAD1.0000

LCOMB LOS4 DEAD1.0000 END

---

Create Gap input file GAPINP.DAT to define no load gap elements

For Gap options,

All gap elements defined in the model = Yes; Units = MN;

Add Gap type override by member LCGAP line to define,

No load member D101-C101 and D103-C103 for load case LOS1; No load member D201-C201 and D203-C203 for load case LOS2; No load member D301-C301 and D303-C303 for load case LOS3; No load member D401-C401 and D403-C403 for load case LOS4; The gap input file generated shall looks like following:

--- GAPOPT 0 MN 600 0.00001 M

LCGAP LOS1 INC NL MEM D101C101 D103C103 LCGAP LOS2 INC NL MEM D201C201 D203C203 LCGAP LOS3 INC NL MEM D301C301 D303C303 LCGAP LOS4 INC NL MEM D401C401 D403C403 END

--- Create gap run file and run the analysis.

SACS System Training 2011 Gap Loadout - 4

Review results. Gap element report:

--- LOAD CASE ALLS CONVERGED IN 0 ITERATIONS

NO. GAP ELEMENT TYPE DEFLECTION FORCE FACTOR CM KN 1 D103-C103 COMP -0.01096 -736.2 0.000000E+00 2 D203-C203 COMP -0.01531 -1028.5 0.000000E+00 3 D303-C303 COMP -0.01248 -838.5 0.000000E+00 4 D101-C101 COMP -0.01094 -734.7 0.000000E+00 5 D201-C201 COMP -0.01532 -1029.4 0.000000E+00 6 D301-C301 COMP -0.01249 -839.1 0.000000E+00 7 D403-C403 COMP -0.00694 -466.5 0.000000E+00 8 D401-C401 COMP -0.00696 -467.6 0.000000E+00 LOAD CASE LOS1 CONVERGED IN 30 ITERATIONS NO. GAP ELEMENT TYPE DEFLECTION FORCE FACTOR CM KN 1 D103-C103 NULL -1.37222 0.0 0.207227E+05 2 D203-C203 COMP -0.03268 -2195.1 0.000000E+00 3 D303-C303 COMP -0.01204 -808.8 0.000000E+00 4 D101-C101 NULL -1.37133 0.0 0.207094E+05 5 D201-C201 COMP -0.03267 -2194.9 0.000000E+00 6 D301-C301 COMP -0.01203 -808.4 0.000000E+00 7 D403-C403 COMP -0.00099 -66.3 0.000000E+00 8 D401-C401 COMP -0.00100 -67.1 0.000000E+00 LOAD CASE LOS2 CONVERGED IN 30 ITERATIONS NO. GAP ELEMENT TYPE DEFLECTION FORCE FACTOR CM KN

1 D103-C103 COMP -0.01882 -1264.1 0.000000E+00 2 D203-C203 NULL -0.62087 0.0 0.937611E+04 3 D303-C303 COMP -0.01926 -1293.7 0.000000E+00 4 D101-C101 COMP -0.01880 -1262.7 0.000000E+00

SACS System Training 2011 Gap Loadout - 5 5 D201-C201 NULL -0.62139 0.0 0.938407E+04 6 D301-C301 COMP -0.01928 -1295.1 0.000000E+00 7 D403-C403 COMP -0.00762 -511.8 0.000000E+00 8 D401-C401 COMP -0.00764 -513.2 0.000000E+00 LOAD CASE LOS3 CONVERGED IN 30 ITERATIONS NO. GAP ELEMENT TYPE DEFLECTION FORCE FACTOR CM KN 1 D103-C103 COMP -0.01079 -724.5 0.000000E+00 2 D203-C203 COMP -0.02110 -1417.7 0.000000E+00 3 D303-C303 NULL -0.53055 0.0 0.801215E+04 4 D101-C101 COMP -0.01076 -723.0 0.000000E+00 5 D201-C201 COMP -0.02112 -1418.8 0.000000E+00 6 D301-C301 NULL -0.53093 0.0 0.801791E+04 7 D403-C403 COMP -0.01381 -927.5 0.000000E+00 8 D401-C401 COMP -0.01383 -929.0 0.000000E+00 LOAD CASE LOS4 CONVERGED IN 30 ITERATIONS NO. GAP ELEMENT TYPE DEFLECTION FORCE FACTOR CM KN 1 D103-C103 COMP -0.00784 -526.4 0.000000E+00 2 D203-C203 COMP -0.01609 -1081.0 0.000000E+00 3 D303-C303 COMP -0.02177 -1462.6 0.000000E+00 4 D101-C101 COMP -0.00782 -525.1 0.000000E+00 5 D201-C201 COMP -0.01611 -1082.0 0.000000E+00 6 D301-C301 COMP -0.02179 -1463.4 0.000000E+00 7 D403-C403 NULL -0.71792 0.0 0.108418E+05 8 D401-C401 NULL -0.71884 0.0 0.108556E+05 --- SACS System Training 2011

Transportation Analysis Page - 1

Transportation Analysis

1. Transportation analysis using TOW program Preparation

1) Under “Training Project”, create “Tow” subdirectory 2) Under “Tow” subdirectory, create “Tow Inertia” directory

3) Copy SACINP.DAT model file from “Static” directory to “Tow Inertia” directory and rename it to SACINP.DECK.

General Information

A complete tow analysis includes the following parts: 1) The static analysis for dead load only

2) The tow analysis for transportation inertia loads

3) Combine the results from the above two analyses to generate a combined common solution file

4) Post processing, including member code checks and joint can checks.

Modifying model for tow inertia load generation

Delete the structure below elevation (+ 4.0 m), delete conductor joints 705F, 706F, 707F, and 708F at elevation (+ 15.3 m).

Delete surface weight group LIVE, remove it from weight combination WTCMB line. Add joints at elevation (+ 5.5 m) on each leg, name them 601S, 602S, 603S, and 604S; Add joints 0.5 m below the bottom of deck leg joints, name them 601, 602, 603, and 604, and set the joint fixities as 111111.

603L, and 604-604L, set the member group name as GAP, and define the GAP group as OD = 106.68 cm, and wall thickness = 3.81 cm, release all three member moments at the bottom end, and define the member type as “Compression”.

Around each support can joint 601, 602, 603, and 604 add 4 tie-down support joints, name them D101 to D104 for joints around joint 601, D201 to D204 for joints around joint 602, D301 to D304 for joints around joint 603, and D401 to D404 for joints around joint 604. Add tie-down members from joints S101~S104 to 601S, S201~S204 to 602S, S301~S304 to 603S, and S401~S404 to 604S, set the member group name as SEA, and define SEA as OD = 30.48 cm, and the wall thickness = 1.905 cm, define member type as “No Load”.

Create a seastate input file SEAINP.DEAD for dead load only

Create a seastate input file SEAINP.DEAD only contain the dead load, see the following. SACS System Training 2011

Transportation Analysis Page - 2

--- LDOPT NF+Z1.0280007.849000 0.00 0.00GLOBMN FILE B LOAD LOADCNP000 INCWGT MASS DEAD DEAD -Z M BML END ---

Create a gap analysis run file and execute analysis

Create a runfile and run the analysis, and browse for the results. The generated common solution file will be used to combine with the one generated from the analysis.

Create tow input file TOWINP.TRAN

Tow options need to be set to MN units and center of motion, Coordinate X = -75.0 m, Y = 3.5 m and Z = 4.5 m

Weight combination group MASS is selected by using INCWGT line for inertia load generation.

Tow input file includes motions of 12.5 degree roll @ 10 seconds period, 10 degree pitch @ 15 seconds period, and the heave acceleration of 0.2 G.

There are totally 8 load cases will be created using MOTION line. The gravity is only included in the lateral forces only.

SACS System Training 2011

Transportation Analysis Page - 3 +R+H: + Roll + Heave -R+H: - Roll + Heave +R-H: + Roll - Heave -R-H: - Roll - Heave +P+H: + Pitch + Heave -P+H: - Pitch + Heave +P-H: + Pitch - Heave -P-H: - Pitch – Heave

The tow input file generated shall looks like following:

--- TRANSPORTATION ANALYSIS SAMPLE

TOWOPT MN OR -75.00 3.50 4.5XYZ INCWGT MASS

MOTION+R+H 12.5 10.0 0.2 L MOTION-R+H-12.5 10.0 0.2 L

MOTION+R-H 12.5 10.0 -0.2 L MOTION-R-H-12.5 10.0 -0.2 L MOTION+P+H 10.0 15.0 0.2 L MOTION-P+H -10.0 15.0 0.2 L MOTION+P-H 10.0 15.0 -0.2 L MOTION-P-H -10.0 15.0 -0.2 L END ---

Create a gap input file GAPINP.DAT to override the tie-down members to standard members.

Define members with group ID of SEA as standard members for the above 8 load cases. --- GAPOPT 0 MN 600 0.00001 M

LCGAP +R+H INC ST GRP SEA LCGAP -R+H INC ST GRP SEA LCGAP +R-H INC ST GRP SEA LCGAP -R-H INC ST GRP SEA LCGAP +P+H INC ST GRP SEA LCGAP -P+H INC ST GRP SEA LCGAP +P-H INC ST GRP SEA LCGAP -P-H INC ST GRP SEA END

---

Create tow analysis run file and execute the tow analysis

Create run file, run the analysis and browse for results. SACS System Training 2011

Transportation Analysis Page - 4 SACS System Training 2011

Transportation Analysis Page - 5

Tow inertia loading summary report:

--- ---

* * * D Y N A M I C L O A D I N G S U M M A T I O N * * * (MOMENTS ABOUT SACS ORIGIN)

(NOTE: ASTERISK BY LOAD CASE ID INDICATES STRUCTURAL WEIGHT EXCLUDED)

* JACKET POSITION * ** ANGULAR ACCEL ** *** TRANS ACCEL *** **** FORCE SUMMATION **** ***** MOMENT SUMMATION *****

LOAD ROLL PITCH YAW ROLL PITCH YAW SURGE SWAY HEAVE SURGE SWAY HEAVE ROLL PITCH YAW