WO2019208548A1 - Structure flottante en mer - Google Patents

Structure flottante en mer Download PDF

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Publication number
WO2019208548A1
WO2019208548A1 PCT/JP2019/017163 JP2019017163W WO2019208548A1 WO 2019208548 A1 WO2019208548 A1 WO 2019208548A1 JP 2019017163 W JP2019017163 W JP 2019017163W WO 2019208548 A1 WO2019208548 A1 WO 2019208548A1
Authority
WO
WIPO (PCT)
Prior art keywords
stool
longitudinal
floating structure
strength member
offshore floating
Prior art date
Application number
PCT/JP2019/017163
Other languages
English (en)
Japanese (ja)
Inventor
俊佑 岩見
研 中村
Original Assignee
三井Ｅ＆Ｓ造船株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三井Ｅ＆Ｓ造船株式会社 filed Critical 三井Ｅ＆Ｓ造船株式会社
Publication of WO2019208548A1 publication Critical patent/WO2019208548A1/fr

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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
    • B63B3/14—Hull parts
    • B63B3/26—Frames
    • B63B3/32—Web frames; Web beams
    • 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
    • B63B3/52—Pillars; Deck girders
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices

Definitions

  • the present invention relates to an offshore floating structure in which production equipment is installed on an upper deck or the like.
  • Offshore floating structures such as floating production storage and loading equipment (FPSO) produce oil and gas from the bottom of the ocean through the riser pipe, and the crude oil produced can be stored in tanks and shipped to tankers.
  • FPSO floating production storage and loading equipment
  • tankers not only are tanks for crude oil stored, but production equipment is installed on the upper deck.
  • This production equipment is equipped with various equipment such as gas separation equipment, dehydration equipment, metering equipment, power generation equipment, etc., and is designed according to the characteristics of the oil well and installed after the hull is manufactured. The details are often undecided.
  • the production equipment is installed on a stool on the upper deck in a state of being fixed on the gantry, but the configuration and installation position of the stool is not only the type, arrangement, and size of the production equipment, but also the wave load.
  • the influence of the deformation of the offshore floating structure on the gantry must be taken into consideration, and as described above, it takes time to complete the design and the construction period of the FPSO is long.
  • the load transmitted to the offshore floating structure differs depending on the type and arrangement of production equipment and the type of stool, and the upper deck may have to be reinforced.
  • there is a problem that such a girder must be considered so as not to interfere with piping on the upper deck.
  • the present invention can freely set / change the arrangement of the top side in the direction of the captain without performing reinforcement work, etc. Even if the arrangement or weight of the top side is changed, the design of the hull itself The purpose is to provide an offshore floating structure that does not affect the construction.
  • the offshore floating structure of the present invention is an offshore floating structure capable of mounting production equipment on the upper deck, and has a longitudinal partition wall extending in the longitudinal direction of the offshore floating structure and connected to the lower surface of the upper deck.
  • the upper surface of the upper deck at a position where the upper side of the vertical partition wall is connected is a stool installation section on which a stool for supporting production equipment can be installed, and the vertical passage at the position where the stool installation section is provided
  • the upper side of the partition is made of a steel material having a thickness of 25 mm or more.
  • the upper side of the longitudinal partition wall is made of high tensile steel, for example.
  • the upper side of the longitudinal partition wall is made of, for example, the same material having a uniform thickness over the entire length of the area for mounting the production equipment.
  • the upper side part of the longitudinal partition wall at the position where the stool installation part is provided is made of, for example, a steel material having a thickness of 30 mm or more.
  • the plate width in the depth direction of the upper side portion of the longitudinal partition wall is, for example, 1 m to 4 m.
  • the offshore floating structure has a transverse hull strength member extending in the width direction of the offshore floating structure on the lower surface of the upper deck, and a vertical partition wall of a reinforcing portion of the horizontal hull strength member located below the stool installation portion The area around the connection is reinforced.
  • the stool is a plate-like longitudinal stool strength member arranged along the longitudinal direction of the offshore floating structure in an upright state, and the width direction of the offshore floating structure in an upright state intersecting with the longitudinal stool strength member And a plate-like lateral stool strength member disposed along the length of the longitudinal stool strength member. The length of the longitudinal stool strength member is longer than the length of the lateral stool strength member.
  • the longitudinal stool strength member and the lateral stool strength member have an isosceles trapezoidal shape.
  • a flange is formed on the side connecting the upper side and the lower side of the longitudinal stool strength member and the lateral stool strength member having an isosceles trapezoidal shape.
  • a face material is provided.
  • the vicinity of the lower side edge of the longitudinal stool strength member has a soft toe shape that relieves stress concentration with respect to the hull longitudinal bending moment.
  • the lower end portion of the face member provided on the transverse stool strength member has a repellent shape spreading in the longitudinal direction, and both ends thereof have a soft toe shape that relieves stress concentration against the hull longitudinal bending moment.
  • the height of the stool is 45% to 55% of the production deck height, and the space from the upper deck to the stool height is the piping area for the hull.
  • the lower end portion of the face material provided on the longitudinal stool strength member may be provided with a repellent shape portion exhibiting a repellent shape extending in the width direction of the offshore floating structure, and on the lower surface of the upper deck along the longitudinal partition wall.
  • a backing member connected to the repellent portion of the face material provided on the longitudinal stool strength member may be provided at an intermediate position between two adjacent lateral hull strength members.
  • a bracket member connected to the front and rear edges of the longitudinal stool strength member may be provided to relieve stress concentration on the hull longitudinal bending moment.
  • the top side arrangement can be freely set / changed in the direction of the ship without performing reinforcement work, and even if the top side arrangement, weight, etc. are changed, the hull itself
  • An offshore floating structure that does not affect the design or construction can be provided.
  • FIG. 1 is a plan view of an upper deck of an offshore floating structure according to an embodiment of the present invention.
  • the offshore floating structure 10 of the present embodiment is, for example, FPSO, and produces oil and gas at a production facility 14 (see FIG. 4) provided on the upper deck 12 and stores the produced crude oil in a tank. It is a facility for loading into tankers.
  • the production facility 14 is mounted in a plant installation area P provided on the upper deck 12 between the bow portion 10S and the living section 10A.
  • Each of the production facilities 14 is supported by a stool 16 (see FIG. 2) installed on the upper deck 12.
  • the stool 16 is connected to the lower surface of the upper deck 12 in accordance with the design of the production facility 14, and a longitudinal partition wall 18 and a transverse hull strength member (for example, a deck cross beam or a horizontal partition wall) 20 that support the stool 16. Is installed at the position where FIG. 1 schematically shows a longitudinal bulkhead 18 and a transverse hull strength member 20 under the upper deck 12 in a plant installation area (area for mounting production equipment) P.
  • FIG. 2 is a cross-sectional view of the offshore floating structure 10 showing a configuration relating to reinforcement of the longitudinal partition wall 18 of the offshore floating structure 10 in the present embodiment, and is a cross-sectional view excluding the horizontal hull strength member 20. is there.
  • the upper side 18 ⁇ / b> A in the range of about 1 m to 4 m, more preferably about 1.5 m to 2 m below the upper deck 12 is the plant installation area P.
  • the steel material for example, high-tensile steel is adopted.
  • FIG. 3 is a cross-sectional view of the offshore floating structure 10 showing a configuration relating to reinforcement of the transverse hull strength member 20 of the offshore floating structure 10 in the present embodiment.
  • the transverse hull strength member 20 is a deck cross beam or a horizontal bulkhead, and a deck cross beam is illustrated in FIG.
  • the reinforcing portion 20 ⁇ / b> A of the transverse hull strength member 20 is indicated by a hatched area.
  • the reinforcing portion 20A has a width including the bottom of the stool 16 within the range of about 1 m to 4 m, more preferably about 1.5 m to 2 m below the upper deck 12 in the lateral hull strength member 20 below the upper deck 12.
  • the reinforcing portion 20A is made of a steel material having a thickness of about 25 mm or more, more preferably about 30 mm or more over the entire length of the plant installation area P.
  • the steel material for example, high-tensile steel is adopted.
  • FIG. 4 is a side view showing a state in which the production equipment 14 is mounted / installed on the stool 16 installed on the upper deck 12.
  • a gantry 22 is installed as a top side support, and a production deck 24 on which the production equipment 14 is mounted is installed via the gantry 22.
  • the height h from the upper deck 12 of the stool 16 is 45% to 55% with respect to the height H from the upper deck 12 of the production deck 24, and from the upper deck 12 to the height of the stool 16.
  • This space is a piping area for the hull. Note that the space between the top surface of the stool 16 and the production deck 24 is left as a space for use on the top side (production facility) side.
  • FIG. 5 is a (a) side view, (b) front view, and (c) plan view of the stool 16 used in the present embodiment.
  • FIG. 6 is a perspective view of the stool 16 of the present embodiment installed on the upper deck 12. A more detailed configuration of the stool 16 of the present embodiment will be described with reference to FIGS.
  • the stool 16 of the present embodiment includes a longitudinal stool strength member 160 and a lateral stool strength member 162 having an isosceles trapezoidal shape using, for example, a steel plate (the shape may be rectangular). ), Both stand vertically on the upper deck 12, and cross each other at the center. Further, a top plate 164 is provided at the top of the longitudinal stool strength member 160 and the lateral stool strength member 162 so as to cover them. That is, the gantry 22 or the like shown in FIG. 4 is installed on the top plate 164 by welding or the like so as to allow sliding.
  • the longitudinal stool strength member 160 is attached by welding or the like along the longitudinal partition wall 18, and the lateral stool strength member 162 is attached by welding or the like along the transverse hull strength member 20. It is done.
  • the length L1 of the bottom side of the longitudinal stool strength member 160 is, for example, about 40% longer than the length L2 of the bottom side of the lateral stool strength member 162. Further, both ends of the bottom side of the lateral stool strength member 162 coincide with one position of the longitudinal rib 19 provided under the upper deck 12, for example.
  • FIG. 7 shows a first example in which flange-shaped face members 166 and 168 are provided on the sides connecting the upper side and the lower side of the longitudinal stool strength member 160 and the lateral stool strength member 162 in the stool 16 of FIGS. A modification is shown.
  • the vicinity 160A of the side edge of the longitudinal stool strength member 160 has a soft toe shape that relaxes stress concentration with respect to the hull longitudinal bending moment (in the longitudinal bulkhead L.BHD direction) The stress relaxation part.
  • the lower end portion of the face member 168 provided on the transverse stool strength member 162 has a repellent shape spreading in the longitudinal direction of the hull, and both ends of the repellent shape portion 168A are softening materials that reduce stress concentration against the vertical hull bending moment. It is a tow shape.
  • FIG. 8 is an enlarged view showing the structure of the stool according to the second modified example at the installation position
  • FIG. 8A is a side view along the longitudinal partition wall 18
  • FIG. 8B is a horizontal hull.
  • 3 is a front view along the strength member 20.
  • a repellent repellent shape portion 166 ⁇ / b> A is also provided at the lower end portion of the face material 166 of the longitudinal stool strength member 160 in order to withstand a greater weight. That is, the repellent shape portion 166A is arranged along the hull width direction.
  • a backing member 170 is provided on the lower surface of the upper deck 12 along the repellent shape portion 166A. That is, the repellent shape portion 166 ⁇ / b> A is connected to the backing member 170 through the upper deck 12.
  • two backing members are provided on the lower surface of the upper deck 12 in advance for each lateral hull strength member 20.
  • the length in the ship length direction of the stool 16 is made to coincide with the interval (transspace) T between the transverse hull strength members 20, and one backing member 170 is shared by the adjacent horizontal hull strength members 20. By doing so, the number is halved.
  • FIGS. 9 and 10 an enlarged side view and a perspective view showing a structure of the third modified example at the installation position of the stool are shown in FIGS. 9 and 10, respectively.
  • the stool can withstand a greater weight by providing a repellent shape portion 166A also at the lower end portion of the face material 166 provided on the longitudinal stool strength member 160 along the longitudinal partition wall 18.
  • a repellent shape portion 166A also at the lower end portion of the face material 166 provided on the longitudinal stool strength member 160 along the longitudinal partition wall 18.
  • stress concentration occurs with respect to the longitudinal bending moment of the hull in the vicinity of the repellent shape portion 166A, and the strength of the stool 16 itself may not satisfy the requirement. Therefore, in the third modified example, in addition to the configuration of the second modified example, the lower front edge (front side) and the lower rear edge (rear side) of the longitudinal stool strength member 160 are Then, a bracket member 172 having a soft toe shape that relieves stress concentration is connected to form a stress relieving portion.
  • the longitudinal partition wall on which the stool can be installed is reinforced in advance, so that the top side can be arranged in the ship's direction without performing reinforcement work after the hull construction. It can be freely set / changed, and even if the top side arrangement, weight, etc. are changed, there is no impact on the design and construction of the hull itself. Therefore, it is possible to prevent the hull construction period from being delayed due to the design change on the top side.
  • the degree of freedom of stool installation is also increased by reinforcing the periphery of the connecting portion of the transverse hull strength member that intersects the longitudinal bulkhead in the plant installation area.
  • the hull is divided between the upper deck and the production deck with the lower side as a space for hull piping and electric wire laying and the upper side as a space used for the top side with the top surface of the stool as a boundary. Piping and wire laying design and construction are not affected by changes in the top side, and delays in the hull construction period can be prevented more reliably.
  • the hull longitudinal bending moment greatly affects the strength of the stool, but in this embodiment, the longitudinal stool strength member has a soft toe shape to alleviate stress concentration, and the hull. The influence of the longitudinal bending moment can be reduced.
  • the upper side of the longitudinal bulkhead is configured to be uniformly reinforced over the entire length of the plant installation area, but the longitudinal bulkhead reinforcement is similar to the reinforcing portion of the transverse hull strength member. It is also possible to adopt a configuration that is performed only in the vicinity of the connecting portion of the intersection.
  • the relationship of the length between the longitudinal direction stool strength member and the horizontal direction stool strength member applied to the stool of FIGS. 5 and 6 can be applied to each modification.
  • the soft tow shape demonstrated in the modification can also be applied to the end of the longitudinal stool strength member of the stool shown in FIGS.
  • a stool having the following configuration is used. It is considered as an invention.
  • a stool according to the first invention is a stool for mounting production equipment on an upper deck on an offshore floating structure, and is a plate-like shape installed along the longitudinal direction of the offshore floating structure in an upright state.
  • a longitudinal stool strength member, and a plate-like lateral stool strength member installed along the width direction of the offshore floating structure in an upright state intersecting with the longitudinal stool strength member.
  • the length of the upper side and the lower side of the horizontal stool strength member is the same, or the upper side is shorter than the lower side, and a face material is provided in a flange shape on the side connecting the upper side and the lower side, and the surface provided on the horizontal stool strength member
  • the lower end of the material has a repellent shape that exhibits a repellent shape spreading in the longitudinal direction, and both ends of the repellent shape have a soft tow shape that relieves stress concentration against the hull longitudinal bending moment It is.
  • the stool related to the second invention is the stool according to the first invention, wherein the stool has a soft tow shape in the vicinity of the lower side edge of the longitudinal stool strength member to reduce stress concentration against the hull longitudinal bending moment. Is provided.
  • a stool according to a third invention is the stool according to the second invention, wherein the stress relaxation portion includes a bracket member connected to a front edge and a rear edge of the longitudinal stool strength member.
  • the stool according to the fourth invention is characterized in that in the stools of the first to third inventions, the length of the longitudinal stool strength member is longer than the length of the lateral stool strength member.
  • a stool according to a fifth invention is the stool according to the first invention, wherein the lower end portion of the face material provided on the longitudinal stool strength member has a repellent shape portion exhibiting a repellent shape extending in the width direction of the offshore floating structure.
  • a backing member connected to a repellent shape portion of a face material provided on a longitudinal stool strength member at a middle position between two adjacent lateral hull strength members on the lower surface of the upper deck along the longitudinal bulkhead Is provided.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Revetment (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

L'invention concerne une structure flottante en mer (10) pouvant être un système d'unité flottante de production, de stockage et de déchargement (FPSO) dans lequel une installation de production (14) peut être montée sur un pont supérieur (12). La structure flottante en mer (10) comprend une paroi de séparation longitudinale (18) qui s'étend dans la direction longitudinale et est reliée à la surface inférieure du pont supérieur (12). Une surface supérieure du pont supérieur (12), correspondant à l'emplacement où une partie latérale supérieure (18A) de la paroi de séparation longitudinale (18) est accouplée au pont supérieur (12), fait office de partie d'installation d'appui au niveau de laquelle un appui (16) destiné à supporter l'installation de production (14) peut être installé. La partie latérale supérieure (18A) de la paroi de séparation longitudinale, à l'emplacement où est disposée la partie d'installation d'appui, est composée d'un élément en acier ayant une épaisseur d'au moins 25 mm.
PCT/JP2019/017163 2018-04-24 2019-04-23 Structure flottante en mer WO2019208548A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018082829A JP2019188977A (ja) 2018-04-24 2018-04-24 洋上浮体構造物
JP2018-082829 2018-04-24

Publications (1)

Publication Number Publication Date
WO2019208548A1 true WO2019208548A1 (fr) 2019-10-31

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Application Number Title Priority Date Filing Date
PCT/JP2019/017163 WO2019208548A1 (fr) 2018-04-24 2019-04-23 Structure flottante en mer

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JP (1) JP2019188977A (fr)
WO (1) WO2019208548A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114148446A (zh) * 2021-12-10 2022-03-08 广州文冲船厂有限责任公司 一种集装箱船的支柱

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112570859B (zh) * 2020-12-08 2022-04-05 上海振华重工启东海洋工程股份有限公司 一种下浮体分段建造方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389188A (en) * 1977-01-13 1978-08-05 Hitachi Zosen Corp Sheep transport vessel
WO2005056379A1 (fr) * 2003-12-15 2005-06-23 Single Buoy Moorings Inc. Structure modulaire de stockage et/ou de traitement d'hydrocarbures au large
KR20110004639A (ko) * 2009-07-08 2011-01-14 대우조선해양 주식회사 인화성 화물 운반선의 태양광발전장치
JP2014162430A (ja) * 2013-02-27 2014-09-08 Mitsubishi Heavy Ind Ltd デッキ置きタンク構造およびその据え付け方法
KR20160150417A (ko) * 2015-06-22 2016-12-30 대우조선해양 주식회사 선체 상부 데크 상의 구조물 지지장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389188A (en) * 1977-01-13 1978-08-05 Hitachi Zosen Corp Sheep transport vessel
WO2005056379A1 (fr) * 2003-12-15 2005-06-23 Single Buoy Moorings Inc. Structure modulaire de stockage et/ou de traitement d'hydrocarbures au large
KR20110004639A (ko) * 2009-07-08 2011-01-14 대우조선해양 주식회사 인화성 화물 운반선의 태양광발전장치
JP2014162430A (ja) * 2013-02-27 2014-09-08 Mitsubishi Heavy Ind Ltd デッキ置きタンク構造およびその据え付け方法
KR20160150417A (ko) * 2015-06-22 2016-12-30 대우조선해양 주식회사 선체 상부 데크 상의 구조물 지지장치

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114148446A (zh) * 2021-12-10 2022-03-08 广州文冲船厂有限责任公司 一种集装箱船的支柱

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