WO2006049119A1 - 船舶用鋼構造体及び船舶 - Google Patents
船舶用鋼構造体及び船舶 Download PDFInfo
- Publication number
- WO2006049119A1 WO2006049119A1 PCT/JP2005/019984 JP2005019984W WO2006049119A1 WO 2006049119 A1 WO2006049119 A1 WO 2006049119A1 JP 2005019984 W JP2005019984 W JP 2005019984W WO 2006049119 A1 WO2006049119 A1 WO 2006049119A1
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- WO
- WIPO (PCT)
- Prior art keywords
- steel structure
- ship
- thickness
- plate
- value
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B2231/00—Material used for some parts or elements, or for particular purposes
- B63B2231/02—Metallic materials
- B63B2231/04—Irons, steels or ferrous alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B3/48—Decks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B3/48—Decks
- B63B3/54—Hatch openings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B3/56—Bulkheads; Bulkhead reinforcements
Definitions
- the present invention relates to a marine steel structure having excellent brittle crack propagation stopping characteristics.
- the present invention relates to a marine steel structure suitably used as a longitudinal member near the upper deck in a large vessel such as a container ship or a Balta carrier having a large cargo opening near the upper deck. Is.
- FIG. 5 is a schematic view showing the port side of the container ship with an upward force
- FIG. 6 is a cross-sectional view showing a longitudinal member at an upper position A in FIG. FIG.
- reference numeral 1 is a container ship
- C is a container ship center line
- 2 is a ship side outer plate (outer shell)
- 3 is an upper deck plate (upper deck)
- 4 is a longe with an upper deck plate
- 5 is a longibalta Head (longitudinal bulkhead)
- 6 is a hatching plate
- 6a is a hatching plate
- 6b is a long plate with a hatching plate
- 6c is a long plate with a hatching plate
- 6d is a longe with a hatching plate Show.
- steel plates with a plate thickness of around 60 mm and a standard yield strength of 390 NZmm 2 are used for the longitudinal members near the upper deck 3 of large container ships of 6000 TEU (20 ft container equivalent). ing.
- the longitudinal members of the Hachiko-forming 6 located above the upper deck 3 (Hachiko-forming plate 6a, Longi with a Hachiko-forming plate 6b, Hachiko-forming top plate 6c, S In Longi 6d), the longitudinal bending stress is maximized, so thickening is remarkable.
- the fracture toughness value is specified by the classification societies to prevent the occurrence of brittle cracks.
- the bending moment (longitudinal bending moment) in the ship length direction is large near the center in the length direction of the hull, and the plate thickness is 30 mm because the upper deck has high stress in the ship length direction (longitudinal bending stress). It is stipulated that grade E steels with high toughness should be used when exceeding (the grade of fracture toughness is expressed in alphabetical order and is specified in alphabetical order from the lowest fracture toughness value). Fracture toughness values are also specified for welds.
- Patent Document 1 Japanese Patent Laid-Open No. 2004-232052
- the present invention has been made in view of such circumstances, and an object thereof is to provide a steel structure used for a large vessel such as a large container vessel.
- the marine steel structure of the present invention employs the following means, that is, the marine steel structure according to the present invention has a standard yield strength of 390 NZmm 2 in a tensile test.
- K value Large value K indicating arrest performance K (hereinafter referred to as “K value”) ca ca
- This marine steel structure has a higher yield strength in the tensile test than 390 NZmm 2 , so it is stronger than the 390 NZmm 2 grade steel plate stipulated by the classification society, and the plate thickness can be made thinner than before. it can.
- the K value is the operating temperature of the ship—10 ca
- the upper limit value of the steel structure thickness can be determined so that sufficient arresting performance can be maintained while maintaining the arresting performance required for marine structural members.
- the marine steel structure according to the present invention is a marine steel structure having a predetermined thickness, which has a standard yield strength in a tensile test of greater than 390 NZmm 2 and a fracture in a Charpy impact test.
- This marine steel structure has a higher yield strength in the tensile test than 390 NZmm 2 , so it is stronger than the 390 NZmm 2 grade steel plate stipulated by the classification society, and the plate thickness can be made thinner than before. it can.
- the K value is the ship's operating temperature—10 ca
- a marine steel structure according to the present invention is a marine steel structure having a predetermined thickness, and has a standard yield strength in a tensile test larger than 390 NZmm 2 and absorption in a Charpy impact test.
- Energy value Force performance value K is -10 ° C 400 ca
- ONZmm 1 'in fracture appearance transition temperature of the indicated steel sheet having a thickness of 5 may be of a higher absorption energy value in Charpy shock test corresponding.
- This marine steel structure has a higher yield strength in the tensile test than 390 NZmm 2 , so it is stronger than the 390 NZmm 2 grade steel plate stipulated by the classification society, and the plate thickness can be made thinner than before. it can.
- the K value is the ship's operating temperature—10 ca
- the ship of the present invention includes the steel structure!
- This ship has a plate thickness of a high-strength steel structure that takes into account the necessary arrest performance. Therefore, even if the ship grows in size, strength is secured without significantly increasing the thickness of the steel structure. .
- the steel structure may be used as a longitudinal member near the upper deck.
- a ship using the steel structure as a longitudinal member near the upper deck has the thickness of the longitudinal member set in consideration of necessary arrest performance. The strength is ensured without significantly increasing the thickness. Therefore, it is possible to prevent the ship's center of gravity from increasing.
- a steel structure having strength and arrestability suitable as a structural member can be provided without significantly increasing the thickness. Therefore, if this steel structure is used, the weldability is not impaired, so that the weld quality of the welded portion can be ensured when building a ship.
- ships using this steel structure have a significantly thicker structural member while maintaining strength. It is possible to prevent the board from being pressed.
- this steel structure is used as a longitudinal member near the upper deck of a ship with a large cargo opening such as a container ship, the ship's resilience As a result, the ship of the present invention loads more loads such as containers compared to a ship that secures its strength by greatly increasing the longitudinal members near the upper deck. It is possible.
- FIG. 1 is a diagram showing the results of a large-scale hybrid ESSO test conducted on various steel sheets.
- FIG. 2 is a diagram showing the shape and dimensions of an ESSO test piece.
- FIG. 4 is a graph showing the relationship between the fracture surface transition temperature of steel sheet and the Charpy impact absorption energy at 40 ° C.
- FIG. 5 A schematic view of the port side of the container ship as seen from above.
- FIG. 6 is a cross-sectional view showing a longitudinal member at an upper position A in FIG.
- the marine steel structure of the present invention is suitably used as a structural member of a marine vessel that may be thickened.
- the marine steel structure of the present invention is suitably used for a longitudinal member in the vicinity of the upper deck of a container ship, which tends to be thickened due to large longitudinal bending stress. Above all, it is most suitably used for container ships with a load capacity exceeding 8000 TEU.
- the steel structure for ships of the present invention is applicable not only to container ships but also to ships having a high possibility of thick plates (for example, Balta carriers, LNG carriers, etc.).
- the standard yield strength in the tensile test of the steel structure of the present invention is higher than the 390 NZmm 2 class defined as a high-strength steel sheet by the classification society, more preferably 460 NZmm 2 or more.
- the steel structure of the present invention can be reduced in thickness by about 10 to 20% compared to a 390 NZmm 2 grade steel sheet.
- the K value of the steel structure of the present invention is 4000 NZmm 15 or more at -10 ° C. This was determined as follows.
- Fig. 1 shows the results of this large-scale hybrid ESSO test.
- the K value of the test material is the test temperature ca
- the component force to be able to stop the propagation of long cracks ⁇ ivy Since the operating temperature of the ship is defined as 10 ° C, the K value of the steel structure of the present invention is ca. 5 or more.
- the K value can be obtained by the ESSO test described below.
- the K value can also be obtained by other test methods such as the double cacaus tensile test, but here we will explain the ESSO test as a representative.
- Figure 2 shows the shape and dimensions of the ESSO test piece.
- Fig. 2 (a) shows the overall shape of the ESSO test piece, and
- Fig. 2 (b) shows the notch shape of the ESSO test piece.
- a tab is attached by welding to both ends where the stress of the test piece shown in Fig. 2 is applied, and this is set on a large testing machine.
- a predetermined temperature distribution is given to the test piece and a predetermined tensile stress is applied.
- a wedge is struck to the notch to give a sufficient impact energy to generate a brittle crack. Record the temperature at which the brittle cracks that have occurred propagated and stopped and the length and stress of the brittle cracks.
- the brittle crack propagation resistance value K is calculated by substituting the length and stress of the brittle crack into the following equation.
- the inventors investigated the relationship between the transition temperature and the plate thickness necessary to ensure the required arrest performance, that is, OOONZmm 1 ' 5 or more at 10 ° C, which is the operating temperature of the ship. I found. We also found that there is a correlation between the transition temperature and the Charpy impact absorption energy value. Therefore, by combining these correlations, we examined a method for simply determining whether a steel structure with a given plate thickness satisfies the required arrest performance using the Charpy impact absorption energy value V.
- Figure 3 shows a plate thickness of 40mm, ca
- the fracture surface temperature ca can be easily obtained even when the arrest performance (K) of the steel plate is not a component.
- the arrest performance (K) of the steel plate can be determined from the degree (vTrs) and the plate thickness.
- Figure 4 is a graph showing the relationship between the fracture surface transition temperature (vTrs) (° C) and Charbi impact absorption energy (vE (-40 ° C)) (J) at 40 ° C.
- Peak impact absorption energy value (vE) can be obtained.
- the arrest performance deteriorates due to the thick plate.
- the weight increases due to the thick plate.
- the restoring force is reduced, resulting in a decrease in the container load capacity.
- grade and thickness of the longitudinal members near the upper deck are as follows.
- the increase in weight can be suppressed by increasing the strength of the material of (2) above, making the ship's outer skin 2 and the Longibalta head 5 thinner, with a relatively small contribution to strength against longitudinal bending. Is assumed. However, since the arrest performance is not taken into consideration, the plate thickness of the upper deck plate 3 and the hatching 6 is reduced!
- the grade and thickness of the longitudinal member near the upper deck are as follows.
- the plate thickness is suppressed as in the conventional case, and the necessary arrest performance is exhibited.
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-321238 | 2004-11-04 | ||
JP2004321238A JP4898110B2 (ja) | 2004-11-04 | 2004-11-04 | 船舶用鋼構造体の選択方法及び船舶 |
Publications (1)
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WO2006049119A1 true WO2006049119A1 (ja) | 2006-05-11 |
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PCT/JP2005/019984 WO2006049119A1 (ja) | 2004-11-04 | 2005-10-31 | 船舶用鋼構造体及び船舶 |
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WO (1) | WO2006049119A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007326147A (ja) * | 2006-05-12 | 2007-12-20 | Jfe Steel Kk | 脆性亀裂伝播停止特性に優れる溶接構造体 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4943793B2 (ja) * | 2006-09-20 | 2012-05-30 | 株式会社アイ・エイチ・アイ マリンユナイテッド | コンテナ船のハッチコーミング |
JP2010195330A (ja) * | 2009-02-26 | 2010-09-09 | Mitsubishi Heavy Ind Ltd | 船体用鋼板の選定方法及び船舶 |
KR200477411Y1 (ko) * | 2010-11-17 | 2015-06-05 | 대우조선해양 주식회사 | 해상 구조물의 비상탈출통로 구조 |
KR102605383B1 (ko) * | 2019-09-06 | 2023-11-23 | 삼성중공업 주식회사 | 연료 공급 시스템 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09157794A (ja) * | 1995-12-06 | 1997-06-17 | Nippon Steel Corp | 制振合金及びその製造方法 |
JPH09302445A (ja) * | 1996-05-09 | 1997-11-25 | Sumitomo Metal Ind Ltd | 低温用Ni含有鋼とその製造方法 |
JPH1136042A (ja) * | 1997-07-18 | 1999-02-09 | Sumitomo Metal Ind Ltd | アレスト性と溶接性に優れた高張力鋼および製造方法 |
JPH1161249A (ja) * | 1997-08-27 | 1999-03-05 | Nkk Corp | 靭性に優れた引張り強さ780N/mm▲2▼級鋼の製造方法 |
JP2000160680A (ja) * | 1998-11-30 | 2000-06-13 | Nippon Steel Corp | アレスト性に優れた鋼材を用いた建築構造部材および建築構造物 |
JP2000328177A (ja) * | 1999-05-24 | 2000-11-28 | Kobe Steel Ltd | アレスト特性および延性破壊特性に優れた鋼板 |
JP2003226931A (ja) * | 2002-02-05 | 2003-08-15 | Nippon Steel Corp | アレスト性に優れた直接焼入れ型高張力厚鋼板 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3499084B2 (ja) * | 1996-06-28 | 2004-02-23 | 新日本製鐵株式会社 | 脆性き裂伝播停止特性に優れた建築用低降伏比高張力鋼材及びその製造方法 |
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- 2004-11-04 JP JP2004321238A patent/JP4898110B2/ja active Active
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- 2005-10-31 WO PCT/JP2005/019984 patent/WO2006049119A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09157794A (ja) * | 1995-12-06 | 1997-06-17 | Nippon Steel Corp | 制振合金及びその製造方法 |
JPH09302445A (ja) * | 1996-05-09 | 1997-11-25 | Sumitomo Metal Ind Ltd | 低温用Ni含有鋼とその製造方法 |
JPH1136042A (ja) * | 1997-07-18 | 1999-02-09 | Sumitomo Metal Ind Ltd | アレスト性と溶接性に優れた高張力鋼および製造方法 |
JPH1161249A (ja) * | 1997-08-27 | 1999-03-05 | Nkk Corp | 靭性に優れた引張り強さ780N/mm▲2▼級鋼の製造方法 |
JP2000160680A (ja) * | 1998-11-30 | 2000-06-13 | Nippon Steel Corp | アレスト性に優れた鋼材を用いた建築構造部材および建築構造物 |
JP2000328177A (ja) * | 1999-05-24 | 2000-11-28 | Kobe Steel Ltd | アレスト特性および延性破壊特性に優れた鋼板 |
JP2003226931A (ja) * | 2002-02-05 | 2003-08-15 | Nippon Steel Corp | アレスト性に優れた直接焼入れ型高張力厚鋼板 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007326147A (ja) * | 2006-05-12 | 2007-12-20 | Jfe Steel Kk | 脆性亀裂伝播停止特性に優れる溶接構造体 |
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Publication number | Publication date |
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JP2006131056A (ja) | 2006-05-25 |
JP4898110B2 (ja) | 2012-03-14 |
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