CN105711763B - Ocean platform upper chunk typhoon load calculation method - Google Patents
Ocean platform upper chunk typhoon load calculation method Download PDFInfo
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- CN105711763B CN105711763B CN201510992255.5A CN201510992255A CN105711763B CN 105711763 B CN105711763 B CN 105711763B CN 201510992255 A CN201510992255 A CN 201510992255A CN 105711763 B CN105711763 B CN 105711763B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
- B63B35/4413—Floating drilling platforms, e.g. carrying water-oil separating devices
Abstract
The present invention relates to a kind of ocean platform upper chunk typhoon load calculation method, step are as follows：The peripheral portion of tension leg platform (TLP) upper chunk is taken, infinitesimal is separated into along axis；It is distributed according to the tangential velocity of typhoon and radial velocity, obtains the typhoon tangential velocity and radial direction wind speed suffered by structure infinitesimal；Tangential wind speed and radial direction wind speed are decomposed into global coordinate system；According to the movement velocity and wind speed of platform itself, the relative velocity of platform structure and typhoon is obtained；Relative velocity is converted into the normal direction relative velocity vertical with axis；Normal direction relative velocity is transformed into satellite coordinate system from global coordinate system；It is included in the wind load for pointing to upper chunk side wall inter normal direction；Wind load is transformed into global coordinate system from satellite coordinate system；Obtain wind load suffered by whole upper chunk.The present invention can be with fast and convenient calculating typhoon load, to avoid tension leg platform (TLP) accident of being toppled etc. under the effect of typhoon extreme loads from providing the technical support of science.
Description
Technical field
The invention belongs to field of ocean engineering, is that one kind is used for typhoon load suffered by large scale ocean engineering structure
Quick calculation method.
Background technology
World ocean petroleum resource cities account for the 34% of global oil total resources, global ocean oil reserving amount about 100,000,000,000
Ton, wherein proved reserves for 38,000,000,000 tons.With advances in technology with the application of continually developing of new technologies and materials, ocean stone
The cost of exploration activity exploitation lowers year by year, promotes the development of marine petroleum development.
China's offshore petroleum resources are quite abundant, and only South Sea marine oil and gas reserves tentatively exploration is 23,000,000,000 to 30,000,000,000 tons,
Therefore the offshore oil at the exploitation South Sea is to promoting national economic development to have great significance.
South Sea marine environment is severe.The number that annual typhoon occurs is typically at 6,7 times, the blast of Typhoon-Induced and billow,
The superstructure module of ocean structure, especially marine oil and gas platform is acted on, by platform wind action, causes production of hydrocarbons platform
Destroy.
One of main form of platform of deep-sea oil gas exploitation is tension leg platform (TLP), is operated in the tension force in U.S. Mexico gulf
Leg platform, the major accident under typhoon effect once occurred, tension leg platform (TLP) is by typhoon smashed.
Due to tension leg platform (TLP) upper chunk bulky, typhoon cyclone causes the torsion and push-and-pull of superstructure chunk,
Platform in balance position is caused to change and reverse.In addition, the wind direction of typhoon velocity field can produce with the mobile of center of typhoon
Instantaneous change, its load calculate the Steady Wind model that people can not be used to be known well.How the load of typhoon cyclone is calculated
And the dynamic response of caused structure, lack effective computational methods both at home and abroad at present.In order to solve the lower deep-sea of typhoon effect
Tension leg platform (TLP) calculating loaded, dynamic response caused by forecast typhoon cyclone, makes this invention.The present invention is for deep
The upper chunk of extra large tension leg platform (TLP), it is proposed that the fast and convenient computational methods of typhoon load, compensate for tension leg platform (TLP) top
The research blank of chunk typhoon LOAD FOR.
The content of the invention
It is an object of the invention to provide a kind of fast and convenient typhoon load calculation method, effectively obtains under typhoon effect
The wind load of tension leg platform (TLP) upper chunk, can be to avoid tension leg platform (TLP) from being toppled under the effect of typhoon extreme loads
Accident provides the technical support of science.
The tension leg platform (TLP) upper chunk typhoon load calculation method step that the present invention develops is as follows：
Step 1：Take the peripheral portion of tension leg platform (TLP) upper chunk, i.e., end to end cuboid, along axis by its from
Dissipate into infinitesimal.
Step 2：It is distributed according to the tangential velocity of typhoon and radial velocity, obtains the typhoon Tangential Wind suffered by structure infinitesimal
Speed and radial direction wind speed.
Step 3：Tangential wind speed and radial direction wind speed are decomposed into global coordinate system, obtain the wind speed of x and y coordinates direction of principal axis.
Step 4：According to the movement velocity and wind speed of platform itself, the relative velocity of platform structure and typhoon is obtained.
Step 5：Relative velocity is converted into the normal direction relative velocity vertical with axis.
Step 6：Normal direction relative velocity is transformed into satellite coordinate system from global coordinate system.
Step 7：It is included in the wind load for pointing to upper chunk side wall inter normal direction.
Step 8：Wind load is transformed into global coordinate system from satellite coordinate system.
Step 9：Wind load suffered by each infinitesimal is integrated, obtains wind load suffered by whole upper chunk.
The present invention outstanding advantages be：
1st, typhoon load calculation method of the invention is simple, efficient, feasible.
2nd, can according to suffered by the tension leg platform (TLP) upper chunk being calculated wind load, tension leg platform (TLP) can be carried out
Motor imagination is forecast, further optimizes the exercise performance and structural strength of tension leg platform (TLP).
Brief description of the drawings
Fig. 1 is the departure process schematic diagram of tension leg platform (TLP) upper chunk.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Define coordinate system：OXYZ is global coordinate system, and O points are located at center of gravity when platform is in equipoise, OXY with
Standing level is parallel.GX ' Y ' Z ' are the satellite coordinate system moved with TLP, and G is TLP center of gravity.In initial time, OXYZ with
GX ' Y ' Z ' are overlapped.
Step 1：The peripheral portion 2 of tension leg platform (TLP) upper chunk 1 is taken, infinitesimal 3 is separated into along axis.
Step 2：It is distributed according to the tangential velocity of typhoon 4 and radial velocity, obtains the tangential of typhoon 4 suffered by infinitesimal 3
Wind speed and radial direction wind speed.
Step 3：Tangential wind speed and radial direction wind speed are decomposed into global coordinate system (being represented in formula with subscript s), obtain x-axis
The wind speed in direction and the wind speed in y-axis direction.
Step 4：According to tension leg platform (TLP) in global coordinate system the movement velocity and wind speed in x and y-axis direction, obtain
The relative velocity of power leg platform and typhoon 4：
Step 5：Relative velocity is converted into the normal direction relative velocity vertical with axis：
Step 6：Using the transition matrix C of global coordinate system to satellite coordinate system, by normal direction relative velocityFrom world coordinates
System is transformed into satellite coordinate system, obtains speed
Step 7：It is included in the wind load for pointing to the side wall inter normal direction of upper chunk 1：
In formula, ρ is atmospheric density, and A is the area of infinitesimal side wall.
Step 8：By transition matrix, by typhoon loadGlobal coordinate system is transformed into from satellite coordinate system：
Step 9：Wind load suffered by each infinitesimal 3 is integrated, obtains wind load suffered by whole upper chunk 1.
Claims (1)
1. a kind of ocean platform upper chunk typhoon load calculation method, defines coordinate system first：OXYZ is global coordinate system, O
Point is located at center of gravity when platform is in equipoise, and OXY is parallel with standing level；GX ' Y ' Z ' be with TLP move with
Body coordinate system, G are TLP center of gravity；In initial time, OXYZ overlaps with GX ' Y ' Z ', and computational methods are：
Step 1：The peripheral portion of tension leg platform (TLP) upper chunk is taken, i.e., end to end cuboid, is separated into along axis
Structure infinitesimal；
Step 2：Be distributed according to the tangential velocity of typhoon and radial velocity, obtain typhoon tangential velocity suffered by structure infinitesimal and
Radial direction wind speed；
Step 3：Tangential wind speed and radial direction wind speed are decomposed into global coordinate system, obtain the wind speed of x and y coordinates direction of principal axis；
Step 4：With reference to platform displacement speed, the relative velocity of platform and typhoon is obtained；
Step 5：Relative velocity is converted into the normal direction relative velocity vertical with axis；
Step 6：Normal direction relative velocity is transformed into satellite coordinate system from global coordinate system；
Step 7：It is included in the wind load for pointing to upper chunk side wall inter normal direction；
Step 8：Wind load is transformed into global coordinate system from satellite coordinate system；
Step 9：Wind load suffered by each infinitesimal is integrated, obtains wind load suffered by whole upper chunk.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510992255.5A CN105711763B (en) | 2015-12-23 | 2015-12-23 | Ocean platform upper chunk typhoon load calculation method |
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| CN201510992255.5A CN105711763B (en) | 2015-12-23 | 2015-12-23 | Ocean platform upper chunk typhoon load calculation method |
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| CN105711763A CN105711763A (en) | 2016-06-29 |
| CN105711763B true CN105711763B (en) | 2017-11-17 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109992878B (en) * | 2019-03-29 | 2022-10-14 | 山东交通学院 | Wind load loading method for analyzing strength of overall structure of ocean platform |
| CN110501136B (en) * | 2019-09-30 | 2020-08-14 | 大连理工大学 | Ocean platform wind load forecasting method based on test of correcting specific wind profile to arbitrary wind profile |
Citations (4)
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|---|---|---|---|---|
| US3490406A (en) * | 1968-08-23 | 1970-01-20 | Offshore Co | Stabilized column platform |
| CN102998083A (en) * | 2012-11-30 | 2013-03-27 | 大连船舶重工集团有限公司 | Method for obtaining platform actual wind load through self-elevating drilling platform wind tunnel test |
| CN103803016A (en) * | 2012-11-09 | 2014-05-21 | 大连船舶重工集团有限公司 | Method of determining wind load of self-elevating drilling platform |
| CN105004503A (en) * | 2015-06-29 | 2015-10-28 | 中国海洋大学 | Self-elevating type offshore platform wind load coefficient test experimental system |
-
2015
- 2015-12-23 CN CN201510992255.5A patent/CN105711763B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3490406A (en) * | 1968-08-23 | 1970-01-20 | Offshore Co | Stabilized column platform |
| CN103803016A (en) * | 2012-11-09 | 2014-05-21 | 大连船舶重工集团有限公司 | Method of determining wind load of self-elevating drilling platform |
| CN102998083A (en) * | 2012-11-30 | 2013-03-27 | 大连船舶重工集团有限公司 | Method for obtaining platform actual wind load through self-elevating drilling platform wind tunnel test |
| CN105004503A (en) * | 2015-06-29 | 2015-10-28 | 中国海洋大学 | Self-elevating type offshore platform wind load coefficient test experimental system |
Non-Patent Citations (2)
| Title |
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| 7500吨浮式起重机风载荷特性分析;张戬杰等;《湖南大学学报(自然科学版)》;20140131;第41卷(第1期);76-80 * |
| 考虑上部组块风载荷的张力腿平台耦合动力响应;王宾等;《中国造船》;20161231;第57卷(第4期);23-33 * |
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Address after: 300350 District, Jinnan District, Tianjin Haihe Education Park, 135 beautiful road, Beiyang campus of Tianjin University Patentee after: Tianjin University Address before: 300072 Tianjin City, Nankai District Wei Jin Road No. 92 Patentee before: Tianjin University |