CN103661794A

CN103661794A - Ship with equant oblique double-layer bottoms

Info

Publication number: CN103661794A
Application number: CN201310639413.XA
Authority: CN
Inventors: 张恩国; 马延德; 沈闻孙; 田天; 包岩; 王景洋; 彭贵胜; 陈立
Original assignee: Dalian Shipbuilding Industry Co Ltd
Current assignee: Dalian Shipbuilding Industry Co Ltd
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2014-03-26
Anticipated expiration: 2033-11-29
Also published as: CN103661794B

Abstract

The invention discloses a ship with equant oblique double-layer bottoms. The ship comprises flat outer bottoms (1) and flat inner bottoms (3). The flat outer bottoms (1) and the flat inner bottoms (3) are parallel to the bottom of the ship and are respectively connected with oblique outer bottoms (6) and oblique inner bottoms (5) so as to be connected to shipboards, and the oblique outer bottoms (6) are parallel to the oblique inner bottoms (5); bottom longitudinal girders (2) are arranged among folded corners of the flat outer bottoms (1) and the oblique outer bottoms (6) and folded corners of the flat inner bottoms (3) and the oblique inner bottoms (5). The bottom longitudinal girders (2) are aligned with a longitudinal bulkhead (4) (if the longitudinal bulkhead is available), the folded corners of the inner bottoms and the outer bottoms are equally divided by the bottom longitudinal girders (2), coordinates of the folded corners of the inner bottoms are consistent with coordinates of upper end points of the bottom longitudinal girders (2), and coordinates of the folded corners of the outer bottoms are consistent with coordinates of lower end points of the bottom longitudinal girders (2). The ship has the advantages that a method for arranging the bottom longitudinal girders at folded corner points is applied, various structural angles are reasonably arranged by the aid of an equant included angle principle, accordingly, loads can be effectively transmitted, stress concentration can be reduced, the structural strength of the ship can be improved, and a technology can be simplified.

Description

A kind of fraction inclination double bottom boats and ships that wait

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, designed a kind of knuckle design that waits fraction inclination double bottom, 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 fraction inclination double bottom boats and ships that wait, comprise the interior end of flat outer bottom peace that bottom of ship be arranged in parallel.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, are connected to topside; 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, bottom stringers is set.And described bottom stringers is divided the knuckle between described flat outer bottom and oblique outer bottom and at the described flat interior end and the described tiltedly interior end equally.

In addition, as required, the top of described bottom stringers arranges longitudinal bulkhead.

The present invention has applied the method that bottom stringers is set at knuckle point, and minute angle principle such as application, reasonably arranges each structure angle design, 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, the fraction inclination double bottom boats and ships ship type elevation profile schematic diagrams such as the present invention.

Fig. 6 is the knuckle design form schematic diagram that the present invention waits fraction inclination double bottom.

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 oblique interior end 5.The knuckle of the end and outer bottom in the stringers decile of bottom, because decile design can the every load of mean allocation, proof stress, has reduced stress and has concentrated effectively, has 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 that bottom stringers 2 is connected with longitudinal bulkhead 4 contrapositions, can be effectively and between longitudinal bulkhead along vertical transmitted load, although not in same plane, but there is effective support at the end in the tiltedly interior end peace both sides, so can not produce stress, concentrate.And decile design can keep double bottom height constant, keeps the conformability of intensity.

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, illustrate that the present invention waits the advantage of the knuckle design of fraction inclination double bottom: the inside and outside end of inclination adopts parallel design, and angle of inclination A is 15 degree; The knuckle of the end and outer bottom in the stringers decile of bottom, the included angle B of bottom stringers and horizontal outer bottom is (180-A)/2=(180-15)/2=82.5 degree.Because double bottom adopts inclined design, the height D1 of horizontal double bottom is 3000mm, the height D2=3000mm of inclination double bottom.

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:, the upper extreme point " coordinate is consistent " of knuckle place, the interior end and bottom stringers, the lower extreme point " coordinate is consistent " of outer bottom knuckle place and bottom stringers, 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

1. wait fraction 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,

Extend to side of a ship side direction at the oblique outer bottom (6) that in described flat outer bottom (1) peace, the end (3) be arranged in parallel by connection respectively and 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), bottom stringers (2) is set;

And described bottom stringers (2) is divided the knuckle between described flat outer bottom (1) and oblique outer bottom (6) and at the described flat interior end (3) and the described tiltedly interior end (5) equally.

2. wait according to claim 1 fraction inclination double bottom boats and ships, it is characterized in that, the top of described bottom stringers (2) arranges longitudinal bulkhead (4).