EP2214952A2 - Hüllenstruktur insbesondere für seeschiffe - Google Patents
Hüllenstruktur insbesondere für seeschiffeInfo
- Publication number
- EP2214952A2 EP2214952A2 EP08853929A EP08853929A EP2214952A2 EP 2214952 A2 EP2214952 A2 EP 2214952A2 EP 08853929 A EP08853929 A EP 08853929A EP 08853929 A EP08853929 A EP 08853929A EP 2214952 A2 EP2214952 A2 EP 2214952A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- structure according
- shell
- wall
- cover
- plate
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
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
- B63B3/16—Shells
- B63B3/20—Shells of double type
Definitions
- Sheath structure in particular for seagoing vessels
- the invention relates to a casing structure, in particular for seagoing vessels, according to the preamble of claim 1.
- the object of the invention is to provide a shell structure with increased structural resistance, improved wearing properties and / or increased collision resistance, which in particular is easy to inspect or to maintain.
- the invention solves this problem with the means of claim 1.
- the plate cover according to the invention provides for a significant increase in the elasto-plastic energy absorption capacity and the structural resistance and an improvement in the carrying properties, in particular the limit carrying properties of the shell structure, with minimal additional use of material based on the total mass of the hull ,
- the increase of the elasto-plastic energy absorption capacity leads to a significant increase of the collision resistance especially against side collision and dynamic ice pressure due to the forced dissipation of the kinematic energy of the collision opponent.
- the application of the invention to the bottom wall of seagoing ships leads accordingly leading to an increase in resistance to ground contact.
- An essential advantage of the invention results from the fact that it can build on a conventional envelope structure.
- the plate cover is attached to the conventional secondary stiffening system, substantial modification of the primary support structure is not required.
- the invention therefore requires only a comparatively small interference with the structural basic structure of conventional envelope structures. Since the stiffening system according to the invention can be produced with plate covering by means of known thermal joining methods, the casing structure according to the invention can be produced with the present production facilities, especially in the shipbuilding industry.
- the plate cover has selectively positioned and adequately designed openings for inspection and / or inspection by assembly personnel in order to meet grading companies' inspection and maintenance requirements.
- preferably convex or cylindrically curved plate cover elements are used, resulting in a continuous tubular stiffening of the wall.
- two essential functions are covered, namely increasing the energy absorption of the stiffening by forcing the interaction of bending and membrane stiffness of the structure in the range of very large elasto-plastic deformations to failure onset (structure collapse); and ensuring accessibility for inspection and maintenance by means of a curved rebuilding of the stiffened surfaces.
- preferably flat plate cover elements can be used.
- the flat plate cover elements are preferably joined to the profile with a constant material thickness over the entire stiffening region. This achieves an efficient supporting effect up to the limit bearing range as well as a production-related simplified design.
- the failure mechanism of this planar reinforcement differs fundamentally from that of the convexly curved cover.
- the geometry and position of the inspection and maintenance openings significantly affect the energy absorption, so that they are determined substantially from a structural mechanics point of view.
- highly ductile material in the form of austenitic steel is preferably used.
- the invention is applicable to seagoing vessels of all types, in particular cargo-carrying seagoing vessels such as tankers, container and bulk carriers; ice-breaking and ice-skimming vessels, - off-shore vessels, such as supply and drilling vessels; Navy ships. Applicability in marine and offshore engineering as well as steel bridge construction is also conceivable.
- the additionally introduced plate cover in the outer shell may also be used under standard conditions of loading. integrated into the drive.
- FIG. 1 shows a perspective view of a part of a casing structure according to the invention
- FIG. 2 shows a cross section through the sheath structure of FIG. 1 in a detail according to section A-A in FIG. 1;
- FIG. 3 is a perspective view of a section of the casing structure according to FIG. 2;
- FIG. 4 is a cross-sectional view of the sheath structure of FIG. 3; FIG.
- FIG. 5 is a cross-sectional view of the shell structure in another embodiment
- FIG. 6 shows a perspective view of a part of a casing structure according to the invention in another embodiment
- FIG. 7 shows a cross section through the sheath structure of FIG. 6 in a cutout
- FIG. 8 shows a perspective view of a part of a casing structure according to the invention in a further embodiment
- FIG. 9 a detail of Fig. 8;
- FIG. 10 is a cross-section through the sheath structure of FIG. 9;
- FIG. 10 is a cross-section through the sheath structure of FIG. 9;
- FIG. 11 is a perspective view of the dashed section of FIG. 9; FIG.
- FIG. 12 is a perspective view of a detail of FIG. 11; FIG.
- FIG. 13 shows a perspective view of a part of a casing structure according to the invention in a further embodiment
- FIG. 14 is a longitudinal view of the sheath structure of FIG. 13; FIG.
- Fig. 15 is a perspective view of a part of a conventional shell structure.
- 16 is a perspective view of part of a conventional sheath structure in another embodiment.
- a conventional envelope structure 10 of a ship's hull 11 will be explained below with reference to FIGS. 15, 16.
- the sheath structure 10 comprises a bottom wall 12 and side walls 13, and furthermore a support structure 21 for a deck is shown. Between the bottom wall 12, the side walls 13 and the deck support structure 21, a cargo space 15 is formed.
- the side wall 13 shown comprises a primary support structure 14 of frame frames 17, in particular in transverse construction, to which the outer wall 16 is attached, and orthogonal to the frame
- the hull structure 10 further comprises a secondary stiffening system 19 whose basic structure consists of profile stiffeners 20 arranged in parallel and attached to the outer wall 16.
- the stiffening system 19 can be designed in a transverse construction as shown in FIG. 15 or in a longitudinal construction as shown in FIG. 16.
- the secondary stiffening system 19 is not fastened to the primary support structure 14, in other words the secondary stiffening system 19 is mechanically independent of the primary support structure 14.
- the inventive casing structure 10 according to FIGS. 1 to 14 is based on the conventional casing structure 10 shown in FIGS. 15 and 16.
- the primary support structure 14 is substantially without modifications.
- the secondary stiffening system 19 is produced by attaching the panel cover 22 according to the invention to the existing profile stiffeners 20.
- the attachment of the plate cover 22 may be made prior to attachment of the primary support structure 14 to the wall 16 in an open environment, that is under favorable manufacturing conditions.
- a preferred embodiment of the plate cover 22 in the form of elongated, convexly curved plate elements 23 is shown by the example of a transverse stiffening.
- Each plate member 23 is attached to the free or from the wall 16 remote end of two adjacent profile strips 20 lengthwise.
- each plate element 23 may be formed in several parts from each arranged between two stringers 23 sections.
- the convexly curved plate elements 23 result in a continuous tubular stiffening, whereby a significant increase in the energy absorption by promoting the interaction of bending and membrane stiffness of the Structure in the range of very large elasto-plastic deformations until failure occurs (structural collapse) is achieved.
- FIGS. 2 to 5 examples of a cover unit made up of two adjacent plate elements 23a, 23b are shown in detail.
- the plate member 23a is attached at the free ends of the adjacent profile stiffeners 20a, 20b, the plate member 23b at the free ends of the adjacent profile stiffeners 20b, 20c lengthwise. Due to the convexly curved shape of the plate elements 23a, 23b results in the cross section according to Figures 4 and 5 between the profile stiffeners 20, a curved space 24 which is accessible or accessible for inspection and maintenance personnel.
- the targeted positioning and the size of the cutouts 26 are decisive in the case of the convexly curved plate elements 23 for the realization of a flexible fixation of the end cross sections with a degree of clamping of the stiffening, under which a deformation kinematic or failure forms, with which a significant increase of the elastoplastic Energy intake is achieved.
- the plate elements 23 preferably have material reinforcements 30 in relation to central regions 31 between the stringers 18. More generally, a grading of the plate thickness of the plate members 23 will depend on the free, unsupported length of the stiffener (stringer spacing) for efficient material utilization exploited. For comparatively short stiffening sections (stringer spacing), a constant material thickness is preferred.
- the profile stiffeners 20 are in this embodiment preferably Flachwulstprofile, optionally also built T-profiles, which depending on the purpose and profile webs of different heights can be used.
- the outer profile stiffeners 20a, 20c are flat bead profiles, while the center stiffener 20b is a built T-profile to provide sufficient seating for the edges of the plate members 23a, 23b.
- the center stiffener 20b is designed as a flat bead profile with a larger web height in comparison to the outer stiffeners 20a, 20c.
- Suitable aids for example crampons 25, may be provided for passing through the tubular stiffeners 16, 20a, 20b, 23a or 16, 20b, 20c, 23b.
- the installation of a lift is conceivable.
- FIGS. 6, 7 makes it clear that the plate cover 22 according to the invention in the form of elongated, convexly curved plate elements 23 can also be used on longitudinal stiffening systems 19 with slight adjustments.
- Convex curved plate elements 23 can be advantageously used in particular in flat wall areas. Furthermore, convexly curved plate elements 23 may be made of normal strength steel, but also of austenitic steel, without impairing the effective principle of the stiffening in terms of production engineering and economic advantages.
- the embodiment according to FIGS. 8 to 12 relates to an alternative design of the plate cover in the form of flat plate elements 32, which can be used in particular in curved wall areas, see for example the lower section of the plate element 32 in FIG. 9. With the flat cover 32 of the stiffener 20 creates a kind of sandwich structure. As can be seen in particular from FIG.
- the plate element 32 preferably extends continuously over three or more profile stiffeners 20a, 20b, 20c, whereby an efficient carrying effect is achieved up to the limit bearing range.
- the cover 32 is preferably made of highly ductile material, in particular austenitic steel, whereby the energy absorption capacity of the shell structure significantly increased again and beyond the problem of corrosion for additionally introduced material surfaces can be solved.
- the flat plate elements 32 preferably have a constant material thickness over the entire stiffening region. As profiles 20 Flachwulstprofile, see Figures 10 to 12, and equally T-profiles and flat steel profiles into consideration.
- the plate element 32 is preferably fastened to the profile stiffeners 20 by means of laser welding, wherein preferably two seams 33a, 33b are to be used, see FIG. 12.
- cutouts 26 in the plate members 32 allow a visual inspection and maintenance with a suitable device, even if the gap between the outer wall 16 and the plate members 32 due to low web height of the profiles 20th should not be accessible to personnel.
- the geometry and position of the cutouts 26 are determined substantially from a structural mechanical point of view.
- FIG. 13 and 14 corresponds substantially to the embodiment of Figures 6, 7 with respect to the sidewalls, but illustrates that the invention is also applicable to the bottom wall 12 of the hull in order to increase ground contact resistance.
- the secondary stiffening system 19 according to the invention is embedded on the outer wall 16 with convexly arched plate elements 23 attached to longitudinal profile stiffeners 20 in the rust-shaped primary support system consisting of floor panels 34 and only longitudinally shown supports 35.
- All embodiments relate in particular to double-walled envelope structures, wherein an inner shell or inner wall 27 (see FIGS. 2, 7, 10, 13, 14) attached to the inside of the support structure 14 is shown in FIGS. 1, 6, 8, 15, 16 is omitted to make apparent the internal structure of the shell structure.
- On the inner wall 27 may also be a stiffening system, in particular in the form of mutually parallel profile stiffeners 29 may be attached.
- the invention is not limited to double-shell structures but can also be applied to single-walled shell structures.
- the number of adjoining plate elements 23 depends in particular on the distance between the frame ribs 17 (FIGS. 1, 2, 8, 10) and the stringers 18 (FIGS. 6, 7, 13, 14) and the bottom side rails 35 ( Figures 13, 14).
- the examples of FIGS. 2 to 7 and 9 to 11 relate to two adjoining plate elements 23, the invention also including individual plate elements 23 (see FIG. 1 and 8) and, of course, more than two adjacent plate elements 23 (see, for example, bottom 12 in Figs. 13, 14).
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Rolling Contact Bearings (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL08853929T PL2214952T3 (pl) | 2007-11-30 | 2008-11-15 | Struktura kadłubu, w szczególności dla statków żeglugi morskiej |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007058060A DE102007058060B3 (de) | 2007-11-30 | 2007-11-30 | Hüllenstruktur für Seeschiffe |
| PCT/EP2008/009690 WO2009068199A2 (de) | 2007-11-30 | 2008-11-15 | Hüllenstruktur insbesondere für seeschiffe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2214952A2 true EP2214952A2 (de) | 2010-08-11 |
| EP2214952B1 EP2214952B1 (de) | 2012-10-24 |
Family
ID=40514664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08853929A Not-in-force EP2214952B1 (de) | 2007-11-30 | 2008-11-15 | Hüllenstruktur insbesondere für seeschiffe |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2214952B1 (de) |
| DE (1) | DE102007058060B3 (de) |
| ES (1) | ES2398369T3 (de) |
| PL (1) | PL2214952T3 (de) |
| WO (1) | WO2009068199A2 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018105921A1 (de) * | 2018-03-14 | 2019-09-19 | Op-Maritim Ip Gmbh | Schiffsrumpf |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8523933D0 (en) * | 1985-09-27 | 1985-10-30 | British Shipbuilders Eng | Large sandwich structures |
| US6706406B1 (en) * | 1996-11-13 | 2004-03-16 | Fern Investments Limited | Composite steel structural plastic sandwich plate systems |
| NL1010794C2 (nl) * | 1998-12-11 | 2000-06-19 | Schelde Maritiem B V | Botsbestendige dubbelwandige structuur. |
| DE102004041593B4 (de) * | 2004-08-26 | 2007-02-15 | Lindenau Gmbh Schiffswerft Und Maschinenfabrik | Doppelhüllenschiff |
-
2007
- 2007-11-30 DE DE102007058060A patent/DE102007058060B3/de active Active
-
2008
- 2008-11-15 PL PL08853929T patent/PL2214952T3/pl unknown
- 2008-11-15 ES ES08853929T patent/ES2398369T3/es active Active
- 2008-11-15 EP EP08853929A patent/EP2214952B1/de not_active Not-in-force
- 2008-11-15 WO PCT/EP2008/009690 patent/WO2009068199A2/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009068199A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2398369T3 (es) | 2013-03-15 |
| EP2214952B1 (de) | 2012-10-24 |
| WO2009068199A2 (de) | 2009-06-04 |
| DE102007058060B3 (de) | 2009-05-07 |
| WO2009068199A3 (de) | 2009-12-23 |
| PL2214952T3 (pl) | 2013-08-30 |
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