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Slanted double-bottom ship based on bevel alignment
Description
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Technical field
The present invention relates to ship building technical field, in particular, relate to the connection mode of double bottom in double bottom boats and ships.
Background technology
The design of the horizontal double bottom of existing marine vessel applications as shown in Fig. 1,2 and 5, in flat outer bottom 1 peace, the end 3, be arranged in parallel.As Fig. 1, in flat outer bottom 1 peace, bottom stringers 2 is not set at the end 3.As Fig. 2, in flat outer bottom 1 peace, bottom stringers 2 is set at the end 3, bottom stringers 2 is supported on longitudinal bulkhead 4 belows.
Problem is, in order to reach certain functional requirement, the outer bottom in ship design is connected with the transition of topside and adopts part inclined design, as Fig. 3,4, and the type of attachment shown in application drawing 1,2 completely, therefore the original type of attachment of needs is improved.
Summary of the invention
The present invention is directed to the problems referred to above, the knuckle that has designed a kind of knuckle contraposition inclination double bottom connects, and its object is intended to guarantee the structural strength of knuckle, avoids under the concentrated prerequisite of stress, and the end in oblique outer bottom peace outer bottom, tiltedly interior end peace is connected.
In order to achieve the above object, the invention provides a kind of knuckle contraposition inclination double bottom boats and ships, comprise the interior end of flat outer bottom peace that bottom of ship be arranged in parallel.Extend to topside at the oblique outer bottom that in described flat outer bottom peace, the end be arranged in parallel by connection respectively and the tiltedly interior end; Between the knuckle position of described flat outer bottom and tiltedly outer bottom and the described flat interior end and the knuckle position at the tiltedly interior end, vertical bottom stringers is set.
In addition, as required, the top of described bottom stringers vertically arranges longitudinal bulkhead.
The present invention relates to a kind of knuckle design of knuckle contraposition inclination double bottom, in particular, comprise in ship design, the interior end of inclination and the design of the outer bottom of inclination, and bottom stringers and longitudinal bulkhead design (if longitudinal bulkhead is set).The present invention has applied the method that bottom stringers is set at knuckle point, and applies vertical contraposition connection, reasonably arranges each structure angle, effectively transmitted the load of the interior end and outer bottom, the stress that has reduced to produce because of knuckle is concentrated, and has improved the intensity of structure, has simplified technique.
Accompanying drawing explanation
Fig. 1, Fig. 2 are two kinds of prior art double bottom boats and ships ship type elevation profile schematic diagrams.
Fig. 5 is as the concrete form schematic diagram of horizontal double bottom boats and ships bottom in Fig. 1,2 prior aries.
Fig. 3, the 4th, knuckle contraposition inclination double bottom boats and ships ship type of the present invention elevation profile schematic diagram.
Fig. 6 is the knuckle design form schematic diagram of knuckle contraposition inclination double bottom of the present invention.
The specific embodiment
In order to reach certain functional requirement, outer bottom in ship design adopts inclined design, if the interior end, still adopts conventional design level to arrange, will cause interior outer bottom not parallel, interior outer bottom is built coordinate and is determined very complicated, connecting panel between outer bottom of the interior end is all trapezoidal plate, the sheet material of ordering goods due to steel mill is all rectangular plate, needs Duo Ji road cutting technique, and, the side plate cutting away cannot recycle, and laid down cost will increase greatly.
The present invention is as shown in Fig. 3,4,6, and the 1 interior end 3 of peace of flat outer bottom by knuckle, connects oblique outer bottom 6 respectively and extend to topside at the tiltedly interior end 5, and outer bottom with the advantage of the parallel design in the interior end is, facilitate arrangement structure, facilitate on-the-spot construction, improved the degree of utilization of steel plate, the cost of saving steel.In like manner, the knuckle point of flat outer bottom 1 and oblique outer bottom 6 and the knuckle point contraposition of putting down the interior end 3 and the tiltedly interior end 5---be that horizontal coordinate is consistent, the plate of the horizontal double bottom of same energy assurance is rectangle.
As shown in Figure 3, flat outer bottom 1 and tiltedly outer bottom 6 knuckle point with described flat in the end 3 and tiltedly in arrange between the knuckle point at the end 5 bottom stringers 2.This design, corresponding to as in the horizontal double bottom design of Fig. 1 prior art, if do not need to arrange longitudinal bulkhead, does not have bottom stringers conventionally yet.The advantage of this design is: due to the end 5 in tiltedly with flat in the end 3 not at same plane, in flat, the ends 3 load can only be delivered to knuckle point along plane of the flat interior ends 3, tiltedly, the ends 5 load can only be delivered to knuckle point along the tiltedly interior ends 5 plane, two load direction of transfer change, can generation equal the out-of-plane load in the interior end 3 and the tiltedly interior end 5, thereby generation stress is concentrated.Within tiltedly the end 5 with flat in the ends 3 connection location bottom stringers 2 is set, effectively balance flat in the out-of-plane load in the end 3 and the tiltedly interior end 5, reduced stress concentrated, improved the intensity of structure.
As shown in Figure 4, the present invention bottom stringers 2 and longitudinal bulkhead 4 aligning structure.This design designs corresponding to double bottom as horizontal in Fig. 2 prior art, if longitudinal bulkhead 4 need to be set, guarantee bottom stringers 2 with longitudinal bulkhead 4 at same plane, can be effectively and between longitudinal bulkhead along vertical transmitted load, due in same plane, so can not produce stress, do not concentrate.
Few ballast water VLCC oil carrier of take is below example, by utilizing the analysis of finite element model, and the optimization of a plurality of designs is selected, and the advantage of the knuckle design of knuckle contraposition inclination double bottom of the present invention is described.In Fig. 6, the design of the interior ends 5 of inclination is consistent with outer bottom 6 angles that tilt, that is: the outer bottom 6 of the interior end 5 of inclination, inclination adopts parallel design, and angle of inclination is identical, is A.The inside and outside end tilting, adopts parallel design, and angle of inclination A is preferably 15 degree; Tiltedly, the end 5, arranges bottom stringers 2 with connection location of the flat interior ends 3, bottom stringers 2 and longitudinal bulkhead 4 contrapositions, bottom stringers 2 is perpendicular to the peaceful outer bottom 1 in the end 3 in flat, tiltedly in the end 5 with flat in the ends 3 connection location, tiltedly outer bottom 6 and flat outer bottom 1 connection location, bottom stringers 2 and longitudinal bulkhead 4 coordinate is consistent in the horizontal direction.Because double bottom adopts inclined design, the height D1 of horizontal double bottom is 3000mm, the height D2=D1*cosA=3000*cos15 of inclination double bottom °=2917mm.
Pointed herein: wedged bottom and flat " knuckle ", not the bilinear knuckle of narrow sense connects, but general reference comprising that bilinear connects, single circular arc excessively connects, multi straight connects, many circular arcs connect etc. " knuckle " and locate details and connect and design.
Pointed herein: tiltedly the end 5 with flat in the ends 3 connection location, tiltedly outer bottom 6 and flat outer bottom 1 connection location, bottom stringers 2 and longitudinal bulkhead 4 " coordinate is consistent " in the horizontal direction, not the numerical value of the three-dimensional coordinate of narrow sense equates, but make a general reference for meeting engineering-built needs, the various details along A angle, horizontal direction or other angles in positive and negative 100mm connect design.
The above; it is only the preferably specific embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; according to technical scheme of the present invention and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection scope of the present invention.
Claims (2)
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Claims (2)
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1. knuckle contraposition inclination double bottom boats and ships, comprise the interior end (3) of flat outer bottom (1) peace that bottom of ship be arranged in parallel, it is characterized in that,
The oblique outer bottom (6) that in described flat outer bottom (1) peace, the end (3) be arranged in parallel by connection respectively extended and is connected to topside with the tiltedly interior end (5); Between the knuckle position of described flat outer bottom (1) and tiltedly outer bottom (6) and the described flat interior end (3) and the knuckle position at the tiltedly interior end (5), vertical bottom stringers (2) is set.
2. knuckle contraposition inclination double bottom boats and ships according to claim 1, is characterized in that, the top of described bottom stringers (2) vertically arranges longitudinal bulkhead (4).