CN106971024A - A kind of navigation channel effective width design method based on maximum crossing current cumulative frequency - Google Patents
A kind of navigation channel effective width design method based on maximum crossing current cumulative frequency Download PDFInfo
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- CN106971024A CN106971024A CN201710120878.2A CN201710120878A CN106971024A CN 106971024 A CN106971024 A CN 106971024A CN 201710120878 A CN201710120878 A CN 201710120878A CN 106971024 A CN106971024 A CN 106971024A
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- navigation channel
- crossing current
- ship
- maximum crossing
- effective width
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2111/00—Details relating to CAD techniques
- G06F2111/08—Probabilistic or stochastic CAD
Abstract
, should comprising the following steps that based on the navigation channel effective width design method of maximum crossing current cumulative frequency the invention discloses a kind of navigation channel effective width design method based on maximum crossing current cumulative frequency of harbor approach field of engineering technology：S1：The width in navigation channel is calculated by the ship clearance between ship clearance between track-width, ship and ship and navigation channel base；S2：With distribution characteristics of the crossing current value in the method analysis navigation channel of statistical analysis within specific a period of time, and draw the cummulative frequency curve of maximum crossing current；S3：Pass through the cummulative frequency curve of maximum crossing current, maximum crossing current cumulative frequency is chosen to be designed the effective width in navigation channel, it is worth choosing scientific and reasonable for maximum crossing current in the present invention, has saved cost on the premise of ship navigation safety is ensured, ensure that the ship type navigation of different designs size.
Description
Technical field
The present invention relates to harbor approach field of engineering technology, specially a kind of navigation channel based on maximum crossing current cumulative frequency has
Imitate width design method.
Background technology
With developing rapidly for China's water industry, to meet the demand of freight volume rapid growth, larger-sized vessel is adapted to
Development need, coastal each Port constantly expands the scale of approach channel.In approach channel design, it is thus necessary to determine that navigation channel groove breaks
Width at the design head of face between two hemlines, also known as navigation channel effective width.Although countries in the world navigation channel effective width is designed
Method it is different, but track-width is classified as the important component of navigation channel effective width.Flight path band is determined at present
The method of width has a lot, is such as calculated, by ship marine simulator experiment, cut both ways according to modular formula.But no matter
Using which kind of method, it is required to provide cross-flow design value suffered during ship's navigation.Due to navigation channel cross-flow design value selection principle
It is indefinite, a certain larger crossing current value is often chosen as design load, influences larger with maintenance cost for building.When navigation channel, crossing current is set
When evaluation chooses excessive, navigation channel effective width is partial to safety, the security increase of ship's navigation, but the construction in navigation channel and safeguarded into
This will also be significantly improved；When cross-flow design value selection in navigation channel is too small, navigation channel effective width is relatively dangerous, although more pass through
Help, but navigation safety decreases.It can be seen that, solving the On The Choice of cross-flow design value in the design of navigation channel effective width has
Major and immediate significance.
In view of the research to harbour navigation channel effective width design method is still in the starting stage at present, existing navigation channel is effective
It there are problems that navigation channel cross-flow design value selection principle is indefinite in width design, therefore, how to overcome prior art not
Foot, it has also become one of great difficult problem urgently to be resolved hurrily in current harbor approach field of engineering technology.Therefore, we have proposed one kind
Navigation channel effective width design method based on maximum crossing current cumulative frequency comes into operation, to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of navigation channel effective width design method based on maximum crossing current cumulative frequency, with
Navigation channel cross-flow design value selection principle is there is in the existing navigation channel effective width design for solving to propose in above-mentioned background technology
Indefinite problem.
To achieve the above object, the present invention provides following technical scheme：A kind of navigation channel based on maximum crossing current cumulative frequency
Effective width design method, should comprising the following steps that based on the navigation channel effective width design method of maximum crossing current cumulative frequency：
S1：Navigation channel is calculated by the ship clearance between ship clearance between track-width, ship and ship and navigation channel base
Width；
S2：With distribution characteristics of the crossing current value in the method analysis navigation channel of statistical analysis within specific a period of time,
And draw the cummulative frequency curve of maximum crossing current；
S3：By the cummulative frequency curve of maximum crossing current, choose maximum crossing current cumulative frequency and the effective width in navigation channel is entered
Row design.
It is preferred that, in the step S1, the calculation formula of channel span is：
One-way track W=A+2c
Double way channel W=2A+b+2c
A=n (Lsin γ+B)
In formula：W is navigation channel effective width, and A is track-width, and b is ship clearance between ship, and c is ship and navigation channel bottom
Ship clearance between side, relevant with ship's speed and ship type, n, γ are respectively ship drift multiple and distinguished and admirable pressure drift angle, are had with crossing current
Close.
It is preferred that, in the step S2, the specific period is chosen for 1 year.
It is preferred that, in the step S3, choosing maximum crossing current cumulative frequency should be according to the local tiding table in navigation channel
Information is chosen, and navigation channel has the regularity of distribution in identical year along the maximum crossing current value of journey with tiding table, by locality
The information of tiding table is extrapolated along the maximum crossing current value of journey.
Compared with prior art, the beneficial effects of the invention are as follows：It is worth selection science to be closed for maximum crossing current in the present invention
Reason, cost has been saved on the premise of ship navigation safety is ensured, ensure that the ship type navigation of different designs size.
Brief description of the drawings
Fig. 1 is workflow diagram of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Referring to Fig. 1, the present invention provides a kind of technical scheme：A kind of navigation channel based on maximum crossing current cumulative frequency is effectively wide
Design method is spent, should comprising the following steps that based on the navigation channel effective width design method of maximum crossing current cumulative frequency：
S1：Navigation channel is calculated by the ship clearance between ship clearance between track-width, ship and ship and navigation channel base
Width, the calculation formula of channel span is：
One-way track W=A+2c
Double way channel W=2A+b+2c
A=n (Lsin γ+B)
In formula：W is navigation channel effective width, and A is track-width, and b is ship clearance between ship, and c is ship and navigation channel bottom
Ship clearance between side, relevant with ship's speed and ship type, n, γ are respectively ship drift multiple and distinguished and admirable pressure drift angle, are had with crossing current
Close；
S2：With distribution characteristics of the crossing current value in the method analysis navigation channel of statistical analysis within specific a period of time,
And the cummulative frequency curve of maximum crossing current is drawn, the specific period is chosen for 1 year；
S3：By the cummulative frequency curve of maximum crossing current, choose maximum crossing current cumulative frequency and the effective width in navigation channel is entered
Row design, choosing maximum crossing current cumulative frequency should be chosen according to the information of the local tiding table in navigation channel, and navigation channel edge
Journey maximum crossing current value has the regularity of distribution in identical year with tiding table, is extrapolated by the information of local tiding table
Along the maximum crossing current value of journey.
Learnt by the calculation formula of channel span, after design vessel type is determined, between ship, ship clearance b, c between ship-to-shore
Determine, and track-width is also influenceed by ship drift multiple n and blast drift angle γ, and ship drift multiple n and blast
Drift angle γ influence is determined that the width design in navigation channel is it has to be ensured that the safety of maximum design vessel type is led to by the size flow over
Cross, and large ship is usually required to multiply tide and approached, the involution time of tide, which carves, to be started to drive towards Gang Qu to off-lying sea, multiplies what tide approached for needs
Ship, driving to many navigation channels crossing currents after high tide level, now born when anti-ripple carries mouthful gate segment will reduce perhaps compared with maximum
It is many, accordingly, it is considered to during largest design ship, slightly higher maximum crossing current cumulative frequency may be selected, now corresponding crossing current flow velocity phase
To little, navigation safety is both met, and can investment reduction.It may need not multiply tide compared with canoe type for other to approach, therefore it is reached
The time of mouth gate segment is indefinite, it is possible to the effect of maximum navigation channel crossing current is born, so also needing to examine its navigation safety.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (4)
1. a kind of navigation channel effective width design method based on maximum crossing current cumulative frequency, it is characterised in that：Should be based on maximum horizontal
The navigation channel effective width design method for flowing cumulative frequency is comprised the following steps that：
S1：The width in navigation channel is calculated by the ship clearance between ship clearance between track-width, ship and ship and navigation channel base
Degree；
S2：With distribution characteristics of the crossing current value in the method analysis navigation channel of statistical analysis within specific a period of time, and paint
The cummulative frequency curve of the maximum crossing current of system；
S3：By the cummulative frequency curve of maximum crossing current, choose maximum crossing current cumulative frequency and the effective width in navigation channel is set
Meter.
2. a kind of navigation channel effective width design method based on maximum crossing current cumulative frequency according to claim 1, it is special
Levy and be：In the step S1, the calculation formula of channel span is：
One-way track W=A+2c
Double way channel W=2A+b+2c
A=n (Lsin γ+B)
In formula：W is navigation channel effective width, and A is track-width, and b is ship clearance between ship, and c is between ship and navigation channel base
Ship clearance, relevant with ship's speed and ship type, n, γ are respectively ship drift multiple and distinguished and admirable pressure drift angle, relevant with crossing current.
3. a kind of navigation channel effective width design method based on maximum crossing current cumulative frequency according to claim 1, it is special
Levy and be：In the step S2, the specific period is chosen for 1 year.
4. a kind of navigation channel effective width design method based on maximum crossing current cumulative frequency according to claim 1, it is special
Levy and be：In the step S3, choosing maximum crossing current cumulative frequency should be carried out according to the information of the local tiding table in navigation channel
Choose, and navigation channel has the regularity of distribution in identical year along the maximum crossing current value of journey with tiding table, by local tiding
The information of table is extrapolated along the maximum crossing current value of journey.
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| CN201710120878.2A CN106971024A (en) | 2017-03-02 | 2017-03-02 | A kind of navigation channel effective width design method based on maximum crossing current cumulative frequency |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109829263A (en) * | 2019-04-09 | 2019-05-31 | 黄河勘测规划设计研究院有限公司 | Reduce the navigation channel part Widening Design method of wave height in port |
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| CN102254107A (en) * | 2011-08-12 | 2011-11-23 | 河海大学 | Vessel traffic flow-based inland waterway trafficability computing method |
| CN102943451A (en) * | 2012-10-18 | 2013-02-27 | 河海大学 | Determination method of maximal transverse flow of entrance channel of encircling-type breakwater |
| CN103778282A (en) * | 2014-01-10 | 2014-05-07 | 河海大学 | Effective channel width design method based on maximum transverse flow cumulative frequency |
| CN104821103A (en) * | 2015-05-20 | 2015-08-05 | 大连海事大学 | Ship sailing safety assessment system |
-
2017
- 2017-03-02 CN CN201710120878.2A patent/CN106971024A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102254107A (en) * | 2011-08-12 | 2011-11-23 | 河海大学 | Vessel traffic flow-based inland waterway trafficability computing method |
| CN102943451A (en) * | 2012-10-18 | 2013-02-27 | 河海大学 | Determination method of maximal transverse flow of entrance channel of encircling-type breakwater |
| CN103778282A (en) * | 2014-01-10 | 2014-05-07 | 河海大学 | Effective channel width design method based on maximum transverse flow cumulative frequency |
| CN104821103A (en) * | 2015-05-20 | 2015-08-05 | 大连海事大学 | Ship sailing safety assessment system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109829263A (en) * | 2019-04-09 | 2019-05-31 | 黄河勘测规划设计研究院有限公司 | Reduce the navigation channel part Widening Design method of wave height in port |
| CN109829263B (en) * | 2019-04-09 | 2024-04-12 | 黄河勘测规划设计研究院有限公司 | Channel local widening design method for reducing harbor internal wave height |
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Application publication date: 20170721 |