RFSSP13013CALST001 LIFTING ANALYSIS FOR COOL WATER SKID Rev0 716.docx

1、RFSSP13013CALST001 LIFTING ANALYSIS FOR COOL WATER SKID Rev0 716 LIFTING ANALYSIS FOR COOL WATER SKIDDISCIPLINE：STRUCTUREPAGE 1 of 21COSIGN DISCIP.STOUELINMAPIPRGESASIGN02013-7-16ISSUED FOR APPROVALRev.DateDescriptionPrepared ByChecked By Reviewed ByApproved ByTHIS DOCUMENT CONTAINS CONFIDENTIAL PRO

2、PRIETARY INFORMATION AND MAY NOT BE TRANSFERRED, REPRODUCED, OR USED TO CONSTRUCT ANY PROJECT WITHOUT THE EXPRESS AUTHORITY OF RICHFORM.水冷却系统制作RF Job No.Document No.Rev.RFS-SP-13-013CONTENTS1. INTRODUCTION 32. CODE AND STANDARD 33. ANALYSIS PROGRAM 34. Structure Model 35. Load And Load Combination 6

3、5.1. Basic Load 65.2. Load Combination 76. Analysis Results 76.1. Internal Loads (Factors) 76.2. Deflection 86.3. Nominal Stress Check 97. Conclusion 9APPENDIX A: COOL WATER skid PADEYE CALCULATION 10APPENDIX B: LIFTING FRAME UPPER PADEYE CALCULATION 14APPENDIX C: LIFTING FRAME LOWER PADEYE CALCULAT

4、ION 181. INTRODUCTIONThe report summarizes the result of lifting analysis for cool water skid.In the report, structural skid weight is 1.3t, and vessels and pipings weight is 2.5t(maximum disassembled weight).Padeye check of skid and lifting frame,please see Appendix A,B&C for details.2. CODE AND ST

5、ANDARDThe analysis will be performed with reference to the following code and standards:a) API-RP-2A: American Petroleum Institute recommended practice for planning, designing and constructing fixed offshore platforms-WSD.b) AISC: Manual of Steel Construction, Allowable Stress Design3. ANALYSIS PROG

6、RAMStructure Analysis Computer System (SACS) program has been used in structural global analysis, member stress check. It is made by Engineering Dynamic Inc. of U.S.A.4. Structure ModelThe lifting analysis computer model of the skid is three-dimensional frame, four slings. The detail computer model

7、in SACS program is shown in Fig.1 Fig.3.The properties of member group and section are summarized as below.AMODAMOD 200 1.330SECTSECT I20A WF 10.001.140 20.000.700 0.90GRUPGRUP 127 12.700 0.800 20.00 8.0023.50 1 1.001.00 0.50N 7.849GRUP I20 I20A 20.00 8.0023.50 1 1.001.00 N 7.849GRUP SL 5.200 2.590

8、20.00 8.0023.50 1 1.001.00 0.50N 7.849Fig.1 Structure SACS 3D ModelFig.2 Structure SACS Model(Member Group)Fig.3 Structure SACS Model(Joint Number)5. Load And Load Combination5.1. Basic LoadBasic load include structure dead load and cool water tanks and pipings weight.The dead load is calculated by

9、computer program. cool water tanks and pipings weight added to the computer model as distributed member loads.Load caseLoad descriptionDEADStructure dead loadEQTanks and pipings weight* SEASTATE BASIC LOAD CASE SUMMARY * RELATIVE TO MUDLINE ELEVATION LOAD LOAD FX FY FZ MX MY MZ DEAD LOAD BUOYANCY CA

10、SE LABEL (KN) (KN) (KN) (KN-M) (KN-M) (KN-M) (KN) (KN) 1 EQ 0.000 0.000 -26.846 -27.597 35.793 0.000 0.000 0.000 2 DEAD 0.000 0.000 -17.476 -17.031 30.539 0.000 17.850 0.3745.2. Load CombinationThe uncertain factor of 1.05 is considered for DEAD and EQ, the dynamic load factor 1.35 and 2.00 are cons

11、idered. For lifts to be made at open, exposed sea (i.e., offshore locations), padeyes and other internal members(and both end connections) framing into the joint where the padeye is attached and transmitting lifting forces within the structure is designed for load factor of 2.0 applied to the calcul

12、ated static loads. All other structural members transmitting lifting forces are designed using load factor of 1.35.The load combination is shown in the following table.Load caseLoad description100(DEAD+EQ)x1.05135100x1.35200100x2.00Allowable stress increase 1.33 for “load case 200” is considered. *

13、SEASTATE COMBINED LOAD CASE SUMMARY * RELATIVE TO MUDLINE ELEVATION LOAD LOAD FX FY FZ MX MY MZ CASE LABEL (KN) (KN) (KN) (KN-M) (KN-M) (KN-M) 3 100 0.000 0.000 -46.537 -46.859 69.649 0.000 4 135 0.000 0.000 -62.825 -63.259 94.026 0.000 5 200 0.000 0.000 -93.074 -93.717 139.298 0.0006. Analysis Resu

14、lts6.1. Internal Loads (Factors)From SACS results, the internal loads are shown as below.SACS-IV SYSTEM MEMBER FORCES AND MOMENTS * KN * * KN-M * MEMBER MEMBER GROUP LOAD FORCE(X) FORCE(Y) FORCE(Z) MOMENT(X) MOMENT(Y) MOMENT(Z) NUMBER END ID CASE T- 1 T SL 100 8.92 -0.01 -0.17 0.00 0.29 0.01 135 12.

15、04 -0.01 -0.23 0.00 0.39 0.02 200 17.84 -0.01 -0.33 0.01 0.58 0.02 1 100 8.32 -0.01 -0.17 0.00 -0.30 -0.01 135 11.23 -0.01 -0.23 0.00 -0.40 -0.02 200 16.64 -0.01 -0.33 0.01 -0.59 -0.03 U- F U SL 100 11.20 0.00 0.16 0.00 -0.26 0.00 135 15.12 0.00 0.21 0.00 -0.35 0.00 200 22.41 0.00 0.31 0.01 -0.52 0.

16、00 F 100 10.60 0.00 0.14 0.00 0.26 -0.01 135 14.31 0.00 0.19 0.00 0.35 -0.01 200 21.21 0.00 0.28 0.01 0.51 -0.02 V- I V SL 100 9.19 0.06 0.13 0.00 -0.22 -0.11 135 12.41 0.08 0.18 0.00 -0.29 -0.14 200 18.39 0.12 0.26 0.01 -0.43 -0.21 I 100 8.59 0.06 0.11 0.00 0.21 0.10 135 11.60 0.08 0.15 0.00 0.28 0

17、.14 200 17.18 0.12 0.23 0.01 0.42 0.21 W- 4 W SL 100 10.20 -0.05 -0.15 0.00 0.25 0.10 135 13.77 -0.07 -0.20 0.00 0.34 0.13 200 20.40 -0.11 -0.30 0.01 0.51 0.20 4 100 9.60 -0.05 -0.15 0.00 -0.26 -0.09 135 12.96 -0.07 -0.20 0.00 -0.36 -0.12 200 19.20 -0.11 -0.30 0.01 -0.53 -0.18 X- T X SL 100 11.33 -0

18、.01 0.16 0.00 -0.19 0.05 135 15.29 -0.02 0.22 0.00 -0.26 0.07 200 22.65 -0.02 0.32 0.00 -0.38 0.10 T 100 10.23 -0.01 -0.15 0.00 -0.15 -0.03 135 13.80 -0.02 -0.20 0.00 -0.21 -0.04 200 20.45 -0.02 -0.30 0.00 -0.30 -0.06 X- U X SL 100 13.10 0.00 0.17 0.00 -0.23 0.01 135 17.68 0.00 0.23 0.00 -0.31 0.01

19、200 26.20 0.00 0.34 0.00 -0.46 0.02 U 100 12.00 0.00 -0.14 0.00 -0.13 0.00 135 16.20 0.00 -0.19 0.00 -0.18 -0.01 200 24.00 0.00 -0.28 0.00 -0.26 -0.016.2. DeflectionDeflection of lifting is shown as below. * MAXIMUM JOINT DEFLECTION REPORT * LOAD * X-DIRECTION * * Y-DIRECTION * * Z-DIRECTION * CASE

20、JOINT DEFLECTION JOINT DEFLECTION JOINT DEFLECTION CM CM CM 100 F 0.6151 U -0.5460 F -0.2477 135 F 0.8304 U -0.7371 F -0.3345 200 F 1.2302 U -1.0919 F -0.4955 6.3. Nominal Stress Check The nominal stress check of the cool water skid is performed by using API-RP- 2A.The results of nominal stress chec

21、k indicated that the unity check values for all members dont exceed 1.0 in load case 135 and 200.Therefor no member in the lifting analysis exceeds the allowable stress. The summary of the unity check is shown as below. * * * M E M B E R G R O U P S U M M A R Y * * * API RP2A 21ST/AISC 9TH MAX. DIST

22、 EFFECTIVE CMGRUP CRITICAL LOAD UNITY FROM * APPLIED STRESSES * * ALLOWABLE STRESSES * CRIT LENGTHS * VALUES * ID MEMBER COND CHECK END AXIAL BEND-Y BEND-Z AXIAL EULER BEND-Y BEND-Z COND KLY KLZ Y Z M N/MM2 N/MM2 N/MM2 N/MM2 N/MM2 N/MM2 N/MM2 M M 127 T- W 200 0.07 1.5 -1.76 8.69 -0.03 107.00 196.86

23、176.25 176.25 C.15 3.0 3.0 0.85 0.85I20 H- I 200 0.22 0.0 4.40 25.72 0.32 141.00 305.80 141.00 176.25 TN+BN 1.3 1.3 0.85 0.85SL T- 1 200 0.30 3.5 7.84 -42.93 -1.83 141.00 14.21 176.25 176.25 TN+BN 3.5 3.5 0.85 0.857. ConclusionBased on the upper words, we will get the following conclusion: The lifting of the cool water skid is safe.APPENDIX A: COOL WATER skid PADEYE CALCULATIONAPPENDIX B: LIFTING FRAME UPPER PADEYE CALCULATIONAPPENDIX C: LIFTING FRAME LOWER PADEYE CALCULATION