ABS 2 PART 5A 5B-2017 RULES FOR BUILDING AND CLASSING STEEL VESSELS 2017 PART 5A & 5B SPECIFIC VESSEL TYPES (These Rules are applicable for those vessels having construction contra.pdf

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1、 Part 5A & 5B: Specific Vessel Types (Chapters 1 and 3) RULES FOR BUILDING AND CLASSING STEEL VESSELS 2017 PART 5A & 5B SPECIFIC VESSEL TYPES Common Structural Rules for Bulk Carriers and Oil Tankers (These Rules are applicable for those vessels having construction contracts signed 1 July 2016 to 30

2、 June 2017) American Bureau of Shipping Incorporated by Act of Legislature of the State of New York 1862 2016 American Bureau of Shipping. All rights reserved. ABS Plaza 16855 Northchase Drive Houston, TX 77060 USA (Copyright in these Rules is also owned by the other IACS members as at 1 stJuly 2012

3、. Copyright 1 stJuly IACS 2012) ii 01 JAN 2015 COMMON STRUCTURAL RULES Foreword These Rules published on 1 July 2016 consist of: Common Structural Rules for Bulk Carriers and Oil Tankers 1 January 2015 Rule Change Notice No. 1 (to 1 January 2014 version) effective 1 July 2015 Urgent Rule Change Noti

4、ce No. 1 (to 1 January 2014 version) effective 1 July 2015 Corrigenda No. 1 (to 1 January 2015 version) effective 1 July 2015 In association with the harmonization of the Common Structural Rules (CSR) for Bulk Carriers and Oil Tankers, on 1 July 2015, the three Sub-parts, 5A, 5B, and 5C, of Part 5 o

5、f the Rules for Building and Classing Steel Vessels, 2015 are as follows: Contents Part 5A: General Hull Requirements (IACS CSR Part 1) Part 5B: Ship Types (IACS CSR Part 2) Part 5C: This Part is divided into two separate booklets as follows: Chapters 1 to 6: Tankers and Bulk Carriers not covered by

6、 Part 5A and Part 5B and Container Carriers Chapters 7 to 13: Passenger Vessels, Liquefied Gas Carriers, Chemical Carriers, Vessels Intended to Carry Vehicles, Water Carriers, Membrane Tank LNG Carriers, and Vessels Using Gases or other Low- Flashpoint Fuels. Application Oil Tankers The structural r

7、equirements in Part 5A, Pt 1 and Part 5B, Pt 2, Ch 2 of the Rules are applicable for double hull oil tankers of 150 m in length and upward, with structural arrangements as specified in Part 5A, Pt 1, Ch 1, Sec 1, 1.3. For oil tankers with structural arrangements not covered by Part 5A, Pt 1 and Part

8、 5B, Pt 2, Ch 2, the requirements in Part 5C, Chapters 1 or 2, are to be complied with. Application Bulk Carriers The structural requirements in Part 5A, Pt 1 and Part 5B, Pt 2, Ch 1 of the Rules are applicable for single side skin and double side skin bulk carriers of 90m in length and upward, with

9、 structural arrangements as specified in Part 5A, Pt 1, Ch 1, Sec 1, 1.2. For vessels intended to carry ore or bulk cargoes, other than the single side skin or double side skin bulk carriers of 90 m in length and upward with structural arrangements as specified in Part 5A, Pt 1 and Part 5B, Pt 2, Ch

10、 1, the requirements in Part 5C, Chapters 3 or 4 are to be complied with. Application ABS Construction Monitoring Program These compulsory requirements for CSR notation are specified in Part 5C, Appendix 2. Application Onboard Systems for Oil Tankers and Bulk Carriers The onboard systems for all tan

11、kers are to comply with the requirements of Part 5C, Chapter 1, Section 7, and for all bulk carriers are to comply with the requirements of Part 5C, Chapter 3, Section 7 of the Rules. Application References Other Parts of the ABS Rules that are referenced within Part 5A, 5B, or 5C are also to be app

12、lied. COMMON STRUCTURAL RULES 01 JAN 2015 iii The following flow chart indicates the application of the Rules and typical Class Notations for tanker and bulk carrier vessels, of which arrangements and scantlings are in full compliance with the Rules: This Page Intentionally Left Blank Full Revision

13、History for CSR BC & OT Summary of changes from the 01 JAN 2014 Rules Amendment Type / No. Adoption Date Rule Version Date Effective Date 1 Rule Change Notice 1 22 DEC 2014 01 JAN 2014 01 JUL 2015 2 Urgent Rule Change Notice 1 22 DEC 2014 01 JAN 2014 01 JUL 2015 3 Corrigenda 1 20 JAN 2016 01 JAN 201

14、5 01 JUL 2015 Common Structural Rules for Bulk Carriers and Oil Tankers Corrigenda 1 to 01 January 2015 version Note: This Corrigenda enters into force on 1 stJuly 2015. Copyright in these Common Structural Rules is owned by each IACS Member as at 1st January 2014. Copyright IACS 2014. The IACS memb

15、ers, their affiliates and subsidiaries and their respective officers, employees or agents (on behalf of whom this disclaimer is given) are, individually and collectively, referred to in this disclaimer as the “IACS Members“. The IACS Members assume no responsibility and shall not be liable whether i

16、n contract or in tort (including negligence) or otherwise to any person for any liability, or any direct, indirect or consequential loss, damage or expense caused by or arising from the use and/or availability of the information expressly or impliedly given in this document, howsoever provided, incl

17、uding for any inaccuracy or omission in it. For the avoidance of any doubt, this document and the material contained in it are provided as information only and not as advice to be relied upon by any person. Any dispute concerning the provision of this document or the information contained in it is s

18、ubject to the exclusive jurisdiction of the English courts and will be governed by English law. COMMON STRUCTURAL RULES CORRIGENDA 1 CORRIGENDA 1 TO 01 JANUARY 2015 PAGE 2 OF 38 COMMON STRUCTURAL RULES FOR BULK CARRIERS AND OIL TANKERS CORRIGENDA 1 This document contains editorial amendments or clar

19、ifications within the following Parts and Chapters of the Common Structural Rules for Bulk Carriers and Oil Tankers, 01 January 2015. The amendments are effective on 1st July 2015. The technical background document containing explanation for the editorial amendments in this document can be found in

20、“Technical Background for Corrigenda 1 to 01 January 2015 version”. COMMON STRUCTURAL RULES CORRIGENDA 1 CORRIGENDA 1 TO 01 JANUARY 2015 PAGE 3 OF 38 PART 1 GENERAL HULL REQUIREMENTS CHAPTER 3 STRUCTURAL DESIGN PRINCIPLES SECTION 5 LIMIT STATES 3 STRENGTH CHECK AGAINST IMPACT LOADS 3.1 General 3.1.1

21、 Structural response against impact loads such as forward bottom slamming, bow flare slamming impact and grab chocks depends on the loaded area, magnitude of loads and structural grillage. SECTION 6 STRUCTURAL DETAIL PRINCIPLES 2 GENERAL PRINCIPLES 2.2 Local reinforcements 2.2.1 Reinforcements at kn

22、uckles a) Knuckles are in general to be stiffened to achieve out-of-plane stiffness by fitting ordinary stiffeners or equivalent means in line with the knuckle. b) Whenever a knuckle in a main member (shell, longitudinal bulkhead etc) is arranged, stiffening in the form of webs, brackets or profiles

23、 is to be connected to the members to which they are to transfer the load (in shear). See example of reinforcement at upper hopper knuckle in Figure 1. c) For longitudinal shallow knuckles, closely spaced carlings are to be fitted across the knuckle, between longitudinal members above and below the

24、knuckle. Carlings or other types of reinforcement need not be fitted in way of shallow knuckles that are not subject to high lateral loads and/or high in-plane loads across the knuckle, such as deck camber knuckles. d) Generally, the distance between the knuckle and the support stiffening in line wi

25、th the knuckle is not to be greater than 50 mm. Otherwise, fatigue analysis according to Ch 9 is to be submitted by the designer. COMMON STRUCTURAL RULES CORRIGENDA 1 CORRIGENDA 1 TO 01 JANUARY 2015 PAGE 4 OF 38 Figure 1 : Example of reinforcement at knuckles 3 STIFFENERS 3.1 GENERAL 3.1.2 Where the

26、 angle between the web plate of the stiffener and the attached plating is less than 50 deg as shown on Figure 2, a tripping bracket is to be fitted. If the angle between the web plate of an unsymmetrical stiffener and the attached plating is less than 50 deg, the face plate of the stiffener is to be

27、 fitted on the side of open angle. Figure 2 : Stiffener on attached plating with an angle less than 50 deg COMMON STRUCTURAL RULES CORRIGENDA 1 CORRIGENDA 1 TO 01 JANUARY 2015 PAGE 5 OF 38 3.2 Bracketed end connections of non-continuous stiffeners 3.2.5 Brackets at the ends of non-continuous stiffen

28、ers For connections similar to items (c) and (d) in Figure 3 where the smaller stiffener is connected to a primary supporting member or bulkhead, the bracket arm length is not to be less than two times of hstf. 5 INTERSECTION OF STIFFENERS AND PRIMARY SUPPORTING MEMBERS 5.1 Cut-outs 5.1.3 Cut-outs i

29、n way of cross tie ends and floors under bulkhead stools or in high stress areas are to be fitted with full collar plates, see Figure 7. Figure 8 : Symmetric and asymmetric cut-outs (part of figure shown only) _ t wCOMMON STRUCTURAL RULES CORRIGENDA 1 CORRIGENDA 1 TO 01 JANUARY 2015 PAGE 6 OF 38 Fig

30、ure 9 : Primary supporting member web stiffener details tws, tws1, tws2 : Net thickness of the primary supporting member web stiffener/backing bracket, in mm. dw, dw1, dw2 : Minimum depth of the primary supporting member web stiffener/backing bracket, in mm. dwc, dwc1, dwc2 : Length of connection be

31、tween the primary supporting member web stiffener/backing bracket and the stiffener, in mm. tf : Net thickness of the flange in mm. For bulb profile, tf is to be obtained as defined in Pt.1 Ch.3 Sec.7 1.4.1. 10 -210 -210 -210 -2Replace tw with tws Replace tw with tws Replace tw1 with tws1 Replace tw

32、2 with tws2 Replace tw- with tw1 Replace tw2 with tws2 COMMON STRUCTURAL RULES CORRIGENDA 1 CORRIGENDA 1 TO 01 JANUARY 2015 PAGE 7 OF 38 5.2 Connection of stiffeners to PSM 5.2.3 The load, W 2, in kN, transmitted through the PSM web stiffener is to be taken as: If the web stiffener is connected to t

33、he intersecting stiffener: + = 1 1 2 4 1 A A f A W W w c a If the web stiffener is not connected to the intersecting stiffener: 0 2 = W The values of A w, A wc and A 1 are to be such that the calculated stresses satisfy the following criteria: For the connection to the PSM web stiffener not in way o

34、f the weld: perm w For the connection to the PSM web stiffener in way of the weld: perm wc For the shear connection to the PSM web: perm w where: W : Load, in kN, as defined in 5.2.2. c f : Collar load factor as defined in 5.2.2. a : Panel aspect ratio, as defined in 5.2.2. 1 A : Effective net shear

35、 area, in cm 2 , as defined in 5.2.2. w A : Effective net cross sectional area, in cm 2 , as defined in 5.2.2. w : Direct stress, in N/mm 2 , in the PSM web stiffener at the minimum bracket area away from the weld connection: w w A W 2 10 = wc : Direct stress, in N/mm 2 , in the PSM web stiffener in

36、 way of the weld connection: wc wc A W 2 10 = w : Shear stress, in N/mm 2 , in the shear connection to the PSM web: 1 1 10 A W wc = 1 1 10 A W w = wc A : Effective net area, in cm 2 , of the PSM web stiffener in way of the weld as shown in Figure 9. perm : Permissible direct stress given in Table 1

37、for AC-S and AC-SD, in N/mm 2 . perm : Permissible shear stress given in Table 1 for AC-S and AC-SD, in N/mm 2 . COMMON STRUCTURAL RULES CORRIGENDA 1 CORRIGENDA 1 TO 01 JANUARY 2015 PAGE 8 OF 38 8 DOUBLE SIDE STRUCTURE 8.1 General 8.1.1 Side shell, and inner hull bulkheads and longitudinal bulkheads

38、 are generally to be longitudinally framed. Where the side shell is longitudinally framed, the inner hull bulkheads are to be longitudinally framed. Alternative framing arrangements are to be specially considered by the Society. SECTION 7 STRUCTURAL IDEALISATION 1 STRUCTURAL IDEALISATION OF STIFFENE

39、RS AND PRIMARY SUPPORTING MEMBERS 1.4 Geometrical properties of stiffeners and primary supporting members 1.4.8 Shear area of primary supporting members with web openings The effective web height, h eff, in mm, to be considered for calculating the effective net shear area, A sh- n50 is to be taken a

40、s the lesser of: h eff = h w h eff = h w3 + h w4 h eff = h w1 + h w2 + h w4 where: h w : Web height of primary supporting member, in mm. h w1, h w2, h w3, h w4 : Dimensions as shown in Figure 16. Where an opening is located at a distance less than hw/3 from the cross-section considered, h eff is to

41、be taken as the smaller of the net height and the net distance through the opening. See Figure 16. Figure 16 : Effective shear area in way of web openings COMMON STRUCTURAL RULES CORRIGENDA 1 CORRIGENDA 1 TO 01 JANUARY 2015 PAGE 9 OF 38 2.2 Load calculation point 2.2.2 Buckling For the prescriptive

42、buckling check of the EPP according to Ch 8, Sec 3, the LCP for the pressure and for the hull girder stresses are defined in Table 5. For the FE buckling check, Ch 8, Sec 4 is applicable. Table 5 : LCP coordinates for plate buckling LCP coordinates LCP for pressure LCP for hull girder stresses (Fig.

43、 23) Bending stresses(1) Shear stresses Non horizontal plate Horizontal plate x coordinate Same coordinates as LCP for yielding See Table 4 Mid-length of the EPP y coordinate Both upper and lower ends of the EPP (points A1 and A2) Outboard and inboard ends of the EPP (points A1 and A2) Mid-point of

44、EPP (point B) z coordinate Corresponding to x and y values (1) The bending stress for curved plate panel is the mean value of the stresses calculated at points A1 and A2. LCP coordinates LCP for pressure LCP for hull girder stresses (Fig. 23) Bending stresses(1) Shear stresses Non horizontal plate H

45、orizontal plate x coordinate Same coordinates as LCP for yielding See Table 4 Mid-length of the EPP y coordinate Corresponding to x and z values Outboard and inboard ends of the EPP (points A1 and A2) Mid-point of EPP (point B) z coordinate Both upper and lower ends of the EPP (points A1 and A2) Cor

46、responding to x and y values (1) The bending stress for curved plate panel is the mean value of the stresses calculated at points A1 and A2. COMMON STRUCTURAL RULES CORRIGENDA 1 CORRIGENDA 1 TO 01 JANUARY 2015 PAGE 10 OF 38 CHAPTER 4 LOADS SECTION 6 INTERNAL LOADS 1 PRESSURES DUE TO LIQUIDS 1.2 Stat

47、ic liquid pressure 1.2.2 Harbour/sheltered water operations The static pressure, P ls due to liquid in tanks and ballast holds for harbour/sheltered water operations, in kN/m 2 , is to be taken as: drop air top ls P h z z P + + = ) ( L g for ballast tanks PV top ls P z z P + = ) ( L g for cargo tank

48、s filled with liquid cargo ) 0.5 ( L air top ls h z z P + = g for ballast holds with h air=0 and for other cases 5 LOADS ON NON-EXPOSED DECKS AND PLATFORMS 5.3 Concentrated force due to unit load 5.3.1 If a unit load is carried on an internal deck, the static and dynamic forces due to the unit load

49、carried are to be considered when a direct analysis is applied for stiffeners or primary supporting members such as in Pt 1, Ch 6, Sec 5 1.2 or Pt 1, Ch 6, Sec 6 3.3 respectively. COMMON STRUCTURAL RULES CORRIGENDA 1 CORRIGENDA 1 TO 01 JANUARY 2015 PAGE 11 OF 38 SECTION 8 LOADING CONDITIONS 4.2.6 Design load combinations for direct strength analysis The loading patterns to be considered in the direct strength analysis of bulk carriers are summarised in Table 10.