CN102323035B - Local cabin section model for ship impact resistance test - Google Patents
Local cabin section model for ship impact resistance test Download PDFInfo
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- CN102323035B CN102323035B CN 201110146390 CN201110146390A CN102323035B CN 102323035 B CN102323035 B CN 102323035B CN 201110146390 CN201110146390 CN 201110146390 CN 201110146390 A CN201110146390 A CN 201110146390A CN 102323035 B CN102323035 B CN 102323035B
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Abstract
The invention provides a local cabin section model for a ship impact resistance test, which is a box body formed by a dual-layer bottom compartment, a ballast compartment and a buoyancy reserve compartment. The shape of the cross section of the box body is as same as the shape of an area with length being 5-7 times of frame space along the length direction of a ship to be tested, width being half of the width of the ship along the width direction of the ship and height being above 3-5m from the bottom of the ship up to the inner bottom along a vertical direction. The dual-layer bottom compartment is arranged at the bottom. The buoyancy reserve compartment is arranged right above the dual-layer bottom compartment. The ballast compartment consists of two independent watertight compartments, which are respectively arranged at the front and the rear of the dual-layer bottom compartment and the buoyancy reserve compartment. By designing a 1:1 actual-size typical cabin section model to carry out relevant impact resistance tests to research the local strength of a ship structure, the inaccuracy caused by a too simplified structure during a local grillage model test can be effectively remedied, the defects of high expense, difficult implementation and the like of a real ship test can be avoided and the problem that a scale model test is difficult to be converted into a similar test of a real ship can be solved at the same time.
Description
Technical field
What the present invention relates to is a kind of boats and ships impact test model, specifically a kind of local cabin of boats and ships segment model that can be used for carrying out impact test.
Background technology
Boats and ships inevitably can be subjected to the effect of various shock loads in the navigation process, as the impact force load in collision, the grounding accident and blast impulse load etc., thus the vitality of threatens vessel.Shock response rule and the strength check of partial structurtes are significant for boats and ships vitality.At present, China mainly concentrates on real ship impact test, local grillage shock resistance and contracting than aspect three of the structure shock resistances at the boats and ships impact test.Because it is huge that ship trial expends, very difficult again in the enforcement, under the existing national conditions of China, also only can carry out test to indivedual boats and ships; Though local grillage test cost is relatively low, because the practical structures of test model and hull has larger difference, causes structural response to differ bigger, and is lower with local strength's precision of its examination boats and ships; Not only there is certain difficulty in scale model test at the model manufacture view, and the result who obtains can't be converted on the real ship by similarity relation, also can not adopt this kind method that the local strength of boats and ships is effectively assessed.
Summary of the invention
The object of the present invention is to provide a kind of can be economical, the local cabin of the boats and ships impact test segment model of the local strength of accurate and effective examination boats and ships under impact loading.
The object of the present invention is achieved like this:
It is the casing that is made of double bottom tank, ballast tank and buoyancy reserve cabin; The cross sectional shape of casing is got 5-7 times of rib distance with the test boats and ships along captain's direction, gets half of the beam along beam direction, along vertical in hull bottom upwards is taken to the shape in above 3-5 rice position height zone of living in, the end identical; Described double bottom tank is positioned at the bottom, and its length is 4-6 times of rib distance; Described buoyancy reserve cabin length, width are identical with the double bottom tank section, are positioned at directly over the double bottom tank; Described ballast tank by two independently watertight compartment form, lay respectively at double bottom tank and front and back position place, buoyancy reserve cabin, two cabins each to consistent size, length is 0.5-1 times of rib distance.
The present invention can also comprise:
1, described double bottom tank comprises Outer Bottom Plating, inner bottom plating, is laid with stringers, solid transverse floor and vertical bone on the Outer Bottom Plating.
2, the Outer Bottom Plating of described double bottom tank is the radian identical with the bottom of ship shape.
3, the diagonal bits in the buoyancy reserve cabin is equipped with two hatch.
The present invention is by 1: 1 real yardstick typical case of design cabin segment model, carry out corresponding impact test, the local strength of research Ship Structure, can effectively remedy the inaccuracy that local grillage model test is brought because of the structure over-simplification, avoid shortcomings such as ship trial expense height, performance difficulty, can solve scale model test simultaneously and be difficult to the problem of the similar conversion of real ship.
Characteristics of the present invention are mainly reflected in:
(1) principles of structural design
Cabin segment structure principle of design is as far as possible truly examined the local strength of actual boats and ships under impact loading for integrating accuracy, economy and feasibility.Specific requirement is as follows:
1) accuracy.For different boats and ships, the form of its Ship Structure layout feature and the suffered shock load of boats and ships is distinguished to some extent, so boats and ships emphasis examination zone is different, and this will cause the outward appearance of cabin segment model and inner structure type of attachment difference to some extent.But no matter for which kind of boats and ships, designed cabin segment structure should as far as possible truly reflect the situation of actual boats and ships.
2) economy.Guaranteeing that designed model can accurately reflect on the basis of actual boats and ships design feature and type of attachment thereof, cutting the emphasis examination position of selecting actual Ship Structure and carry out structural design, reducing the cost that the cabin segment structure is built as far as possible.
3) feasibility.Under the prerequisite of guaranteeing cabin segment model structure accuracy and economy, in conjunction with concrete test objective and external environment condition, setting can help the cabin segment model to use the supplementary structure that is put in the test smoothly.And according to the floading condition of test objective appropriate design, determine correct ballast mode, guarantee that test carries out smoothly.
(2) structure technology scheme
The present invention does not relate to concrete certain type ship oceangoing ship, at different tonnages, the hull of shipmate type not, the model structure of designed boats and ships impact test is with different, but which kind of boats and ships no matter, should launch the design of cabin segment model around the cabin section of hull weak link and carrying substantial equipment, based on above principle, concrete technical characterstic is as follows:
(1) in the double bottom tank, bottom stringers, solid transverse floor, vertical bone, inside and outside collecting tray will participate in the middle of the local bending of boats and ships, therefore should comprise above-mentioned typical structure when the design double bottom structure.Be difficult to the problem of the similar conversion of real ship than structure for solving contracting, cabin of the present invention segment structure size does not contract than and adopts full-size(d);
(2) ballast tank has guaranteed that the cabin segment structure possesses the possibility of multiple floading condition.According to different test objectives, the cabin segment structure will present multiple floading condition, and the variation of floading condition relies on the ballast of adjusting in the ballast tank to realize.Ballast tank can not directly be acted on by external impact load, and can not destroy the continuity of double bottom structure, therefore ballast tank is designed in cabin segment model head and the tail both sides, adopt the mode of two ends ballast, guarantee the integrality of double bottom structure, avoid being subjected to impact loading, improve operability simultaneously.
(3) carry out for the safety of warranty test, the cabin segment model must possess enough reserve buoyancies.Similar with ballast tank, the buoyancy reserve cabin can not directly be acted on by external impact load, and can not destroy the continuity of double bottom structure, therefore the buoyancy reserve cabin is designed on double bottom the model middle part.The cabin watertightness performance is good, and the inner space is bigger, and more reserve buoyancy can be provided.At two hatch decks of buoyancy reserve cabin diagonal position design, and axial blower is set on this basis, guarantees double bottom regional air quality, be convenient for measuring the carrying out of work.
(4) can be got by above scheme, the cabin segment model is made up of three parts: double bottom structure, ballast tank and buoyancy reserve cabin.Cabin segment model structure is got 5-7 times of rib distance along captain's direction, gets half of the beam along beam direction, along vertical in hull bottom upwards is taken to the end above 3-5 rice position height.Double bottom tank is main measured zone, is positioned at segment model bottom, cabin, and its length is got 4-6 times of rib distance.Buoyancy reserve cabin length, width are identical with the double bottom tank section, are positioned at directly over the double bottom tank, are kept apart by inner bottom plating between two cabins.Ballast tank by two independently watertight compartment form, be respectively and double bottom tank and front and back position place, buoyancy reserve cabin, two cabins each to consistent size, length is got 0.5～1 times of rib distance.The outside plate of double bottom tank has tangible radian, and according to different ship type characteristics, its radian is difference to some extent.
This invention has following characteristics:
(1) complete boats and ships typical structure.Double bottom is as main measured zone, typical vessel structures such as bottom stringers, solid transverse floor, vertical bone, interior Outer Bottom Plating panel have been comprised, cabin segment structure sheet material does not contract than with section bar and adopts full-size(d), can overcome the defective that local grillage and scale model can not reflect actual boats and ships shock resistance.Adopt this cabin segment model to carry out impact test, its credible result is accurate.
(2) lower model manufacturing cost.The model overall dimension is little, and the complex structure degree is lower, has high economy than the ship trial of costly and operating difficulties.
(3) stronger operability.By the design ballast tank, can adjust the cabin segment model to multiple floading condition, satisfy different operating modes needs are set.Model dimension is less, convenient transportation and integral hoisting.
(4) higher experimental safe coefficient.The setting in buoyancy reserve cabin guarantees that the cabin segment model has enough reserve buoyancies, avoids under the situation of model damage and water inflow forfeiture buoyancy and sinks.To the setting of the design of angie type hatch deck and diagonal angle distribution axial blower, guarantee air quality in the sealing double bottom tank.
Description of drawings
Fig. 1 is the front view of the local cabin of boats and ships impact test of the present invention segment model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is inner bottom construction plan.
Fig. 5 is the outer bottom stretch-out view.
Fig. 6 is the A-A cut-open view of Fig. 1.
Fig. 7 is the B-B cut-open view of Fig. 1.
Fig. 8 is the local cabin of boats and ships impact test of the present invention segment model floading condition synoptic diagram.
Embodiment
For example the present invention is done more detailed description below in conjunction with accompanying drawing:
In conjunction with Fig. 1-3, the local cabin of boats and ships impact test of the present invention segment model is the casing that is made of double bottom tank 1, ballast tank 3 and buoyancy reserve cabin 2; The cross sectional shape of casing is got 5-7 times of rib distance with the test boats and ships along captain's direction, gets half of the beam along beam direction, along vertical in hull bottom upwards is taken to the shape in above 3-5 rice position height zone of living in, the end identical; Described double bottom tank is positioned at the bottom, and its length is 4-6 times of rib distance; Described buoyancy reserve cabin length, width are identical with the double bottom tank section, are positioned at directly over the double bottom tank; Described ballast tank by two independently watertight compartment form, lay respectively at double bottom tank and front and back position place, buoyancy reserve cabin, two cabins each to consistent size, length is 0.5-1 times of rib distance.
In conjunction with Fig. 4-7, double bottom tank comprises Outer Bottom Plating, inner bottom plating, is laid with stringers 4, solid transverse floor 5 and vertical bone 6 on the Outer Bottom Plating simultaneously.The Outer Bottom Plating of double bottom tank is the radian identical with the bottom of ship shape.Diagonal bits in the buoyancy reserve cabin is equipped with two hatch.
According to the form of Ship Structure layout feature and the suffered shock load of boats and ships, generally be the easiest direct effect that is subjected to shock load in bottom of ship locations of structures place, so cabin segment model structural design should be fundamental purpose to investigate boats and ships polycrystalline substance intensity.Because this invention does not relate to concrete certain type ship oceangoing ship for a kind of model structure design that is applicable to the boats and ships impact test, thus can be at different tonnages, the hull design of shipmate type does not go out different model scheme.For a certain ship type, should launch the design of cabin segment model around the cabin section of hull weak link and carrying substantial equipment.
Here be that example further specifies with certain ton oil carrier:
1, estimation shock load size
According to the main sea area of ship running sea situation, topographic(al) data and related specifications requirement, the estimation boats and ships may be subjected to the size of shock load.
2, determine boats and ships emphasis examination zone
According to shock load significant feature zone and comparatively weak position and important interior compartment equipment and the personnel's requirement of concrete Ship Structure, determine section emphasis examination zone, bottom of ship cabin.
3, design cabin segment model
Emphasis examination zone according to having determined in the step 2 is that model simplification is carried out on the basis with original Ship Structure, and designs in order to carry out the model drawing of impact test, prepares to process construction.Model structure figure sees Fig. 1-7.
4, welding process requirement
Typical structure in the segment model of cabin all adopts CO
2Shielded welding, welding technology standard be in strict accordance with classification society's associated welds code requirement, and in conjunction with the concrete construction process requirement restriction of shipyard.
5, floading condition design
The true floading condition of navigating by water in water according to master pattern is come the floading condition of design experiment cabin segment model, and its centerline bulkhead is not the solid coupling surface of stream, and the effect of the load that directly is not hit has only Outer Bottom Plating submergence and underwater.Cabin section floading condition such as Fig. 8.
6, ballast design
By the cabin section floading condition that step 5 is determined, determine that the place needs the quality of ballast and the position again of ballast, realizes designing floading condition by add ballast to ballast tank.
7, cabin section Calculation of Stability
For warranty test carries out safely, should guarantee that the cabin segment model possesses enough just metancenter height and restoring moment in water.For this reason, need on the basis of step 6 and step 7, to carry out Calculation of Stability, and adjust the ballast design according to result of calculation.
Claims (5)
1. the local cabin of boats and ships impact test segment model, it is characterized in that: it is the casing that is made of double bottom tank, ballast tank and buoyancy reserve cabin; The cross sectional shape of casing is got 5-7 times of rib distance with the test boats and ships along captain's direction, gets half of the beam along beam direction, along vertical in hull bottom upwards is taken to the shape in above 3-5 rice position height zone of living in, the end identical; Described double bottom tank is positioned at the bottom, and its length is 4-6 times of rib distance; Described buoyancy reserve cabin length, width are identical with the double bottom tank section, are positioned at directly over the double bottom tank; Described ballast tank by two independently watertight compartment form, a watertight compartment is positioned at before double bottom tank and the buoyancy reserve cabin, another watertight compartment is positioned at after double bottom tank and the buoyancy reserve cabin, two watertight compartments each to consistent size, length is 0.5-1 times of rib distance.
2. the local cabin of boats and ships impact test according to claim 1 segment model, it is characterized in that: described double bottom tank comprises Outer Bottom Plating, inner bottom plating, is laid with stringers, solid transverse floor and vertical bone on the Outer Bottom Plating.
3. the local cabin of boats and ships impact test according to claim 1 and 2 segment model, it is characterized in that: the Outer Bottom Plating of described double bottom tank is the radian identical with the bottom of ship shape.
4. the local cabin of boats and ships impact test according to claim 1 and 2 segment model, it is characterized in that: the diagonal bits in the buoyancy reserve cabin is equipped with two hatch.
5. the local cabin of boats and ships impact test according to claim 3 segment model, it is characterized in that: the diagonal bits in the buoyancy reserve cabin is equipped with two hatch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110146390 CN102323035B (en) | 2011-06-01 | 2011-06-01 | Local cabin section model for ship impact resistance test |
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| CN 201110146390 CN102323035B (en) | 2011-06-01 | 2011-06-01 | Local cabin section model for ship impact resistance test |
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| CN102323035B true CN102323035B (en) | 2013-08-28 |
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| CN102788674B (en) * | 2012-07-18 | 2015-04-15 | 中国船舶重工集团公司第七○二研究所 | Standard mounting frame for checking mounting device of superstructure |
| CN103344393B (en) * | 2013-06-08 | 2015-08-19 | 天津大学 | A kind of experimental provision of falling bodies slamming experiment |
| CN105841909B (en) * | 2016-03-23 | 2018-04-03 | 东南大学 | The experimental rig and its test method of bridge pier collision system based on shipping anti-collision device |
| CN107444567B (en) * | 2017-07-28 | 2019-04-23 | 广船国际有限公司 | A kind of Strength Testing Methods of ultra large crude carrier |
| CN108562421B (en) * | 2018-04-18 | 2020-08-04 | 中国船舶工业集团公司第七0八研究所 | Small waterplane area catamaran bending-twisting combined ultimate strength test model design method |
| CN109178198B (en) * | 2018-08-02 | 2020-06-16 | 哈尔滨工程大学 | Damage equivalent real-scale cabin section model for ship cabin section static explosion test |
| CN109334859B (en) * | 2018-09-10 | 2021-02-12 | 中国船舶工业集团公司第七0八研究所 | Small waterplane area catamaran total vibration steel test model design method |
| CN110979588B (en) * | 2019-12-10 | 2021-10-01 | 西安近代化学研究所 | Equivalent test model for explosion effect in ship cabin |
| CN112326193B (en) * | 2020-10-29 | 2021-09-10 | 哈尔滨工程大学 | Repeatable and quantitative coating type ship streamline experimental method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6738315B1 (en) * | 2003-05-30 | 2004-05-18 | The United States Of America As Represented By The Secretary Of The Navy | Underwater target testing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6738315B1 (en) * | 2003-05-30 | 2004-05-18 | The United States Of America As Represented By The Secretary Of The Navy | Underwater target testing |
Non-Patent Citations (4)
| Title |
|---|
| 双层壳舷间复合托板隔振特性研究;姚熊亮等;《振动、测试与诊断》;20100430;第30卷(第2期);483-486 * |
| 姚熊亮等.双层壳舷间复合托板隔振特性研究.《振动、测试与诊断》.2010,第30卷(第2期), |
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