CN102043881A - Analysis and computation method for structural strength of elevating drilling platform - Google Patents
Analysis and computation method for structural strength of elevating drilling platform Download PDFInfo
- Publication number
- CN102043881A CN102043881A CN 201010602028 CN201010602028A CN102043881A CN 102043881 A CN102043881 A CN 102043881A CN 201010602028 CN201010602028 CN 201010602028 CN 201010602028 A CN201010602028 A CN 201010602028A CN 102043881 A CN102043881 A CN 102043881A
- Authority
- CN
- China
- Prior art keywords
- drilling platform
- load
- environmental
- computation
- condition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses an analysis and computation method for the structural strength of an elevating drilling platform, comprising the following steps: building a finite element model according to the structure point of a drilling platform; determining an environment condition according to the operational sea area of the drilling platform; determining a variable load; combining different environmental working conditions with the variable load to obtain different computation working conditions; analyzing and calculating each computation work condition; after each computation working condition is calculated, checking the computation result from seven aspects according to relevant standards; drawing the environmental map of the drilling platform by taking the environment condition and the maximum lifting capacity as parameters; and inquiring the map to obtain the true state of the drilling platform under the practical use condition. The method has the outstanding characteristics of more computation working conditions, more manpower and time are consumed if people manually operate to finish the computation, but the dedicated program software which is compiled by the method and is dedicated for the environmental map can finish all computations within short time. Meanwhile, the software supports parallel computation so as to further shorten computation time.
Description
Technical field
The present invention relates to the overall performance analysis of ocean mobile drilling platform and the assessment technology of viability, particularly a kind of structural strength analysis computing method that are applicable to the viability of assessment self-elevating drilling platform under various environmental baselines.
Background technology
Along with the development of marine oil cause, the ocean mobile drilling platform has obtained using widely as the important equipment of marine oil and gas exploration and exploitation.Self-elevating drilling platform belongs to mobile offshore drilling unit, because its station-keeping ability is strong and job stabilization is good, occupies the main force status in the oil-gas exploration and development of continental shelf sea area.Compare with the jacket fixed drilling platform, the structural entity flexibility of self-elevating drilling platform is bigger, and vibratory response is comparatively strong, and along with oceanographic engineering develops to the deep-sea, environment is more and more abominable, and the load uncertain factor increases thereupon.Therefore, the structural safety of self-elevating drilling platform and viability problem more and more come into one's own.
A lot of scholar both domestic and external studies at the structural safety problem of self-elevating drilling platform, and has obtained certain achievement.The Karunakaran of Norway has studied drilling platform integral body and has amplified behavior at different waves and the Nonlinear Dynamic under the action of ocean current.Oxonian engineering structure professor Williams utilizes two-dimensional finite element model to study the dynamic response of drilling platform under the varying environment loading.Domestic a lot of personnel have also carried out big quantity research to self-elevating drilling platform, Master degree candidate Liu Yingjie as Harbin Engineering University analyzes the stressing conditions of pile legs of self-elevating drilling platform, and the Master degree candidate Guo Dongjie of University Of Tianjin has studied at labour self-elevating drilling platform storm from depositing the state strength assessment.
Though above-mentioned research is all analyzed the structural strength of drilling platform, it is comprehensive inadequately to analyze content, the usability in the time of can not reflecting the drilling platform operation on the whole.On this basis, people such as the Li Hongtao at CCS maritime works check of drawings center and Li Xin analyze the overall performance under the self-lifting type marine drilling platform standing state, with a typical truss framed leg self-elevating drilling platform is example, by finite element solving and corresponding theory analysis, the computation process and the method for this drilling platform overall performance has been described.
At first, according to the design feature of drilling platform, use finite element software SACS to set up the finite element model of this drilling platform, all structures are simulated by beam element.Calculate the function load and the environmental load of drilling platform then.Wherein, function load comprises fixed load and changing load.Fixed load mainly comprises the deadweight and the equipment load of drilling platform structure, wherein conducts oneself with dignity and finishes calculating by Automatic Program, and equipment load is reduced to point, line, surface load according to deck loads figure and load instructions, is assigned on the main deck corresponding units.Changing load mainly comprises the associated load of prestowage, drilling platform operation of each liquid tank and other life supply etc., and concrete numerical value is taken from deck loads instructions and weight center of gravity calculated description, is divided into operation and storm and applies from depositing two operating modes.Environmental load mainly comprises wind, wave and current load, also comprises P-Δ effect load and wave inertial force load.Above-mentioned basic load combination can be obtained composite condition, carry out finite element method (fem) analysis, come the overall performance of drilling platform is described from following five aspects by given environmental baseline:
1, spud leg intensity;
2, fastening system load-carrying properties;
3, pre-ballast performance;
4, shoe load-carrying properties;
5, stability against overturning.
The aforementioned calculation method has been described the overall performance of drilling platform preferably, but also has following defective:
Only considered the typical calculation operating mode when 1, calculating, as: operation operating mode and storm do not consider that from depositing from depositing operating mode drilling platform also can run into other various environmental baselines when reality is used;
True environment when environmental parameter of 2, choosing and drilling platform use has certain difference, and result of calculation can't be reacted the time of day of drilling platform;
3, comprehensive inadequately to the description of drilling platform overall performance;
The changing load of each operating mode is a certain value when 4, calculating, whether can only judge drilling platform structural strength with this understanding by calculating meets the demands, and can not reflect the maximum variable load that drilling platform can bear under this environmental baseline, promptly can not react the viability of drilling platform comprehensively, thereby can not farthest use this drilling platform;
5, can utilize multiple finite element analysis software that drilling platform is calculated at present, as ANSYS, SACS, SESAM etc.But a lot of initial parameter inputs all are to finish manually in computation process, as applying of load, and the extraction of intermediate data and correlation computations etc.This can cause workload very big on the one hand, need expend a large amount of manpowers; Can cause computing time longer on the other hand, counting yield descends.This two aspect embodies particularly remarkable when design condition is a lot.
Summary of the invention
For solving the problems referred to above that prior art exists, the object of the present invention is to provide a kind of structural strength analysis computing method of self-elevating drilling platform, all environmental baselines that may run into when considering the drilling platform operation, the actual user mode of actual response drilling platform, with the changing load is variable, pass through finite element analysis computation, the overall performance of drilling platform is described more all sidedly, thereby the comprehensive assessment drilling platform is the viability under various environmental baselines during using as a servant, and promotes the usage space of drilling platform; According to this computing method making software, make it can finish all calculating simultaneously, realize the full-automation of whole computation process, manpower is freed from a large amount of calculating, make this method have actual engineering and use meaning in the short time.
To achieve these goals, technical scheme of the present invention is as follows: a kind of structural strength analysis computing method of self-elevating drilling platform may further comprise the steps:
A, set up model
Set up finite element model according to the drilling platform system point;
B, determine environmental baseline
Environmental baseline is mainly considered wind, wave, ocean current and 4 factors of operating depth, and each factor is chosen a series of numerical value according to drilling platform operation marine site, and different environmental factor numerical value makes up and obtains different environmental working conditions;
C, determine changing load
During calculating, the changing load of every kind of environmental working condition is a variable, and promptly changing load changes within the specific limits;
D, determine design condition
Different environmental working conditions and changing load made up obtain different design conditions;
E, analytical calculation
According to design condition, utilize finite element software to carry out analytical calculation and obtain the final structure response of drilling platform, during calculating, consider the dynamic response and the P-Δ effect of drilling platform;
F, check
Every kind of design condition is checked result of calculation according to related specifications after calculating and finishing, and checks content and comprises following seven aspects:
F1, spud leg intensity;
F2, fastening system load-carrying properties;
F3, jacking system load-carrying properties;
F4, pre-ballast performance;
F5, shoe load-carrying properties;
F6, shoe antiskid move ability;
F7, stability against overturning;
Judge by checking whether above-mentioned every performance meets the demands, as meet the demands, showing that the changing load of this moment does not reach the maximal value that drilling platform can bear, keep environmental baseline constant this moment, change changing load, return step D next design condition is carried out analytical calculation and check; So repeatedly, in checking item, there is one not meet the demands, just finally obtains the maximum lifting weight of drilling platform under this environmental baseline; Described maximum lifting weight is fixed load and changing load sum;
G, drafting environment collection of illustrative plates
An environmental working condition calculates and finishes, and returns step B and changes environmental baseline, repeats above calculation process; All environmental working conditions are the environment collection of illustrative plates that parameter is drawn this drilling platform with environmental baseline and maximum lifting weight after calculating and finishing;
Above-mentioned steps is compiled into the environment collection of illustrative plates calculates specific program, described specific program comprises load module, carries out and check module and output module, and described load module comprises that steps A-D, execution check module comprise that step e-F, output module comprise step G.
Compared with prior art, the present invention has following beneficial effect:
The various environmental baselines that may run into when 1, the present invention has taken all factors into consideration the drilling platform operation, having remedied present stage only carries out the deficiency that intensity is calculated to drilling platform typical calculation operating mode.When the drilling platform overall performance is illustrated, on existing basis, increased the check of ability that lifting platform system bearing performance and shoe antiskid are moved.Finally the form with the environment collection of illustrative plates provides the viability of drilling platform under each environmental baseline, by inquiring about this collection of illustrative plates, can obtain the time of day of drilling platform under actual service conditions.
2, outstanding feature of the present invention is that design condition is many, if operation is finished and will be expended very big manpower and time manually, and the environment collection of illustrative plates calculating specific program software of the present invention's establishment has well solved this problem.With a certain self-elevating drilling platform is example, finds by test, and the time that this drilling platform environment collection of illustrative plates is finished in manually-operated on a computer reached more than 900 days, and utilized this software only just can finish all calculating with 15 days.Simultaneously, this software is supported parallel computation, can move this software simultaneously on multiple computers, thereby can further reduce computing time.As seen environment collection of illustrative plates software for calculation energy efficiently and accurately obtains the environment collection of illustrative plates of drilling platform, makes that this method is practical, and has actual engineering use meaning.
Description of drawings
2 in the total accompanying drawing of the present invention, wherein:
Fig. 1 is an environment collection of illustrative plates synoptic diagram of the present invention.
Fig. 2 is a process flow diagram of the present invention.
Embodiment
Is that example is described further to the present invention below in conjunction with accompanying drawing with a certain self-elevating drilling platform.
As shown in Figure 2, at first utilize finite element software to set up finite element model according to the design feature of this drilling platform.According to the operation marine site selection environment condition of this drilling platform, concrete parameter is as shown in table 1.
Table 1 environmental parameter
| The depth of water (m) | 46、61、76、91 |
| Wind speed (m/s) | 36、46、51.4 |
| Water surface flow velocity (m/s) | 0、0.5、1.0、1.5、2.0、2.5 |
| Wave height (m) | (8.06-19.46 step-length is 0.6m) |
Above environmental parameter makes up and obtains different environmental working conditions.For example, depth of water 46m, wind speed 36m/s, water surface flow velocity 0m/s and wave height 8.06m, these 4 environmental parameter combinations are designated as environmental working condition 1; Changing load numerical value is taken as 1000t-4500t according to the operating position scope of drilling platform, and the calculating step-length is 25t; Combination obtains different design conditions to different environmental working conditions with different changing loads, and for example under the condition of environmental working condition 1, changing load is taken as 1000t, obtains design condition 1 this moment.According to related specifications and relevant theory, calculate drilling platform under design condition 1 each several part load and to the drilling platform imposed load, utilize finite element software that it is analyzed, obtain the structural response of drilling platform under this operating mode, the concrete numerical value of the seven aspect contents that need promptly noted earlier are checked.Through checking, this seven aspects content all meets the demands, and the more than 1000t of the changing load that drilling platform can bear is described under the condition of environmental working condition 1.Next, keep environmental working condition 1 constant, changing load becomes 1025t, obtains design condition 2.According to said process design condition 2 is analyzed and checked.When changing load is 4500t, everyly still meet the demands through checking.Here regulation: under certain environmental baseline, when changing load is minimum value 1000t, still have the content that does not meet the demands in checking, then the maximum variable load that can bear this moment of drilling platform is 0; When changing load was maximal value 4500t, full content all met the demands in checking, and then the maximum variable load that can bear this moment of drilling platform is 4500t.In view of the above as can be known, under environmental working condition 1 residing environmental baseline, the maximum variable load that drilling platform can bear is 4500t.Arrive this, an environmental working condition calculates and finishes, and the changing environment condition is calculated each environmental working condition successively according to identical calculation process afterwards, finishes up to all condition calculating.Finally, with environmental baseline and the maximum lifting weight of drilling platform is that fixed load and changing load sum are the environment collection of illustrative plates that parameter is drawn this drilling platform, concrete form as shown in Figure 1, article six, curve is represented six kinds of different flow velocitys respectively, every curve representative is under certain depth of water, wind speed, flow conditions, and the maximum lifting weight of platform is with the variation of wave height.
During actual the use, determine each environmental parameter,, can find the maximum lifting weight of drilling platform under the corresponding current environment condition by inquiry environment collection of illustrative plates according to drilling platform present located environmental baseline.The drilling platform operator can carry out effective prestowage to drilling platform according to this maximum lifting gravimetric value.
Environment collection of illustrative plates software for calculation according to the said method establishment is divided into 3 submodules: load module, execution module and output module.During use, at first environmental baseline and drilling platform parameter are provided with at load module.Execution module can call the calculating that finite element analysis software is correlated with automatically afterwards, and computational data is handled.Output module provided the maximum lifting weight of drilling platform under each environmental baseline with the form of collection of illustrative plates and database after all setting condition calculating finished.Software flow pattern is seen Figure of description 2.
Claims (1)
1. the structural strength analysis computing method of a self-elevating drilling platform is characterized in that: may further comprise the steps:
A, set up model
Set up finite element model according to the drilling platform system point;
B, determine environmental baseline
Environmental baseline is mainly considered wind, wave, ocean current and 4 factors of operating depth, and each factor is chosen a series of numerical value according to drilling platform operation marine site, and different environmental factor numerical value makes up and obtains different environmental working conditions;
C, determine changing load
During calculating, the changing load of every kind of environmental working condition is a variable, and promptly changing load changes within the specific limits;
D, determine design condition
Different environmental working conditions and changing load made up obtain different design conditions;
E, analytical calculation
According to design condition, utilize finite element software to carry out analytical calculation and obtain the final structure response of drilling platform, during calculating, consider the dynamic response and the P-Δ effect of drilling platform;
F, check
Every kind of design condition is checked result of calculation according to related specifications after calculating and finishing, and checks content and comprises following seven aspects:
F1, spud leg intensity;
F2, fastening system load-carrying properties;
F3, jacking system load-carrying properties;
F4, pre-ballast performance;
F5, shoe load-carrying properties;
F6, shoe antiskid move ability;
F7, stability against overturning;
Judge by checking whether above-mentioned every performance meets the demands, as meet the demands, showing that the changing load of this moment does not reach the maximal value that drilling platform can bear, keep environmental baseline constant this moment, change changing load, return step D next design condition is carried out analytical calculation and check; So repeatedly, in checking item, there is one not meet the demands, just finally obtains the maximum lifting weight of drilling platform under this environmental baseline; Described maximum lifting weight is fixed load and changing load sum;
G, drafting environment collection of illustrative plates
An environmental working condition calculates and finishes, and returns step B and changes environmental baseline, repeats above calculation process; All environmental working conditions are the environment collection of illustrative plates that parameter is drawn this drilling platform with environmental baseline and maximum lifting weight after calculating and finishing;
Above-mentioned steps is compiled into the environment collection of illustrative plates calculates specific program, described specific program comprises load module, carries out and check module and output module, and described load module comprises that steps A-D, execution check module comprise that step e-F, output module comprise step G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106020284A CN102043881B (en) | 2010-12-23 | 2010-12-23 | Analysis and computation method for structural strength of elevating drilling platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106020284A CN102043881B (en) | 2010-12-23 | 2010-12-23 | Analysis and computation method for structural strength of elevating drilling platform |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102043881A true CN102043881A (en) | 2011-05-04 |
| CN102043881B CN102043881B (en) | 2012-11-07 |
Family
ID=43910017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106020284A Active CN102043881B (en) | 2010-12-23 | 2010-12-23 | Analysis and computation method for structural strength of elevating drilling platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102043881B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926399A (en) * | 2012-11-13 | 2013-02-13 | 国电联合动力技术有限公司 | Offshore fan pile foundation design method and application thereof |
| CN104951576A (en) * | 2014-03-25 | 2015-09-30 | 上海外高桥造船有限公司 | Strength analysis method for lifting and dropping structure of drilling platform |
| CN106293666A (en) * | 2015-05-28 | 2017-01-04 | 辽宁陆海石油装备研究院有限公司 | 450 feet of self-elevating drilling platform storm collection of illustrative plates calculation procedures |
| CN106802978A (en) * | 2016-12-22 | 2017-06-06 | 中国石油集团渤海石油装备制造有限公司 | A kind of self-elevating drilling platform environment collection of illustrative plates method for drafting |
| CN107169187A (en) * | 2017-05-09 | 2017-09-15 | 中国海洋石油总公司 | A kind of ocean platform weight predictor method |
| CN108733905A (en) * | 2018-05-10 | 2018-11-02 | 中国海洋石油集团有限公司 | A kind of ocean shallow water exploratory well riser pipe quickly selects the method for building up of plate |
| CN110331946A (en) * | 2019-03-27 | 2019-10-15 | 中国石油大学(华东) | Polar region drilling platforms derrick attemperator and its design method |
| CN110414035A (en) * | 2019-06-06 | 2019-11-05 | 中国电建集团华东勘测设计研究院有限公司 | A kind of design method of marine electrical platform structure rapid Optimum |
| CN111236841A (en) * | 2020-01-13 | 2020-06-05 | 中国海洋石油集团有限公司 | Batch drilling method for tension leg platform cluster wells |
| CN111625979A (en) * | 2020-05-28 | 2020-09-04 | 中国船舶工业集团公司第七0八研究所 | Strength checking and loading method for pile leg bolt hole |
| CN113434974A (en) * | 2021-06-23 | 2021-09-24 | 海洋石油工程股份有限公司 | Method for analyzing strength of offshore fixed platform upper module and floating support structure thereof |
-
2010
- 2010-12-23 CN CN2010106020284A patent/CN102043881B/en active Active
Non-Patent Citations (3)
| Title |
|---|
| 《上海造船》 20100930 吴小平 等 自升式钻井平台环境载荷及结构强度 , 第83期 2 * |
| 《中国海洋平台》 20100430 李红涛 等 自升式钻井平台结构强度分析研究 第25卷, 第2期 2 * |
| 《石油工程建设》 19961231 邱长林 等 风暴条件下"渤海六号"钻井平台的稳定分析 , 第5期 2 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926399A (en) * | 2012-11-13 | 2013-02-13 | 国电联合动力技术有限公司 | Offshore fan pile foundation design method and application thereof |
| CN102926399B (en) * | 2012-11-13 | 2014-11-12 | 国电联合动力技术有限公司 | Offshore fan pile foundation design method and application thereof |
| CN104951576A (en) * | 2014-03-25 | 2015-09-30 | 上海外高桥造船有限公司 | Strength analysis method for lifting and dropping structure of drilling platform |
| CN106293666A (en) * | 2015-05-28 | 2017-01-04 | 辽宁陆海石油装备研究院有限公司 | 450 feet of self-elevating drilling platform storm collection of illustrative plates calculation procedures |
| CN106802978A (en) * | 2016-12-22 | 2017-06-06 | 中国石油集团渤海石油装备制造有限公司 | A kind of self-elevating drilling platform environment collection of illustrative plates method for drafting |
| CN107169187A (en) * | 2017-05-09 | 2017-09-15 | 中国海洋石油总公司 | A kind of ocean platform weight predictor method |
| CN108733905A (en) * | 2018-05-10 | 2018-11-02 | 中国海洋石油集团有限公司 | A kind of ocean shallow water exploratory well riser pipe quickly selects the method for building up of plate |
| CN110331946A (en) * | 2019-03-27 | 2019-10-15 | 中国石油大学(华东) | Polar region drilling platforms derrick attemperator and its design method |
| CN110414035A (en) * | 2019-06-06 | 2019-11-05 | 中国电建集团华东勘测设计研究院有限公司 | A kind of design method of marine electrical platform structure rapid Optimum |
| CN110414035B (en) * | 2019-06-06 | 2023-08-18 | 中国电建集团华东勘测设计研究院有限公司 | Design method for rapid optimization of offshore electrical platform structure |
| CN111236841A (en) * | 2020-01-13 | 2020-06-05 | 中国海洋石油集团有限公司 | Batch drilling method for tension leg platform cluster wells |
| CN111236841B (en) * | 2020-01-13 | 2021-06-01 | 中国海洋石油集团有限公司 | Batch drilling method for tension leg platform cluster wells |
| CN111625979A (en) * | 2020-05-28 | 2020-09-04 | 中国船舶工业集团公司第七0八研究所 | Strength checking and loading method for pile leg bolt hole |
| CN111625979B (en) * | 2020-05-28 | 2023-08-15 | 中国船舶工业集团公司第七0八研究所 | Strength checking and loading method for pile leg bolt holes |
| CN113434974A (en) * | 2021-06-23 | 2021-09-24 | 海洋石油工程股份有限公司 | Method for analyzing strength of offshore fixed platform upper module and floating support structure thereof |
| CN113434974B (en) * | 2021-06-23 | 2022-09-06 | 海洋石油工程股份有限公司 | Method for analyzing strength of offshore fixed platform upper module and floating support structure thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102043881B (en) | 2012-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102043881B (en) | Analysis and computation method for structural strength of elevating drilling platform | |
| CN102926399B (en) | Offshore fan pile foundation design method and application thereof | |
| CN101408951B (en) | Method for obtaining equivalent load spectrum and estimating weariness residual longevity of bridge crane based on neural network | |
| CN107679293B (en) | Method for mutually optimizing indoor mechanical parameters and rolling construction parameters of rock-fill dam | |
| CN103792593B (en) | A kind of reservoir stability 4stability determination based on reservoir level and displacement monitoring | |
| Gauch et al. | Carbon vs. cost option mapping: A tool for improving early-stage design decisions | |
| CN103294848A (en) | Satellite solar cell array life forecast method based on mixed auto-regressive and moving average (ARMA) model | |
| CN103678937A (en) | Method for evaluating overall earthquake damage level of reinforced concrete frame structure based on equivalent single-degree-of-freedom system | |
| CN103090945A (en) | Weighing method and independent weighing units of large ocean function module | |
| González-Vallejo et al. | Environmental and economic assessment of dwelling construction in Spain and Chile. A comparative analysis of two representative case studies | |
| CN101615215B (en) | Design method for simplifying fatigue for semi-submersible type platform structure | |
| CN109753670A (en) | Non-anchored storage tank intensity evaluation method and device after settlement of foundation | |
| CN103033329B (en) | A kind of spatial mesh structure frequency discrimination methods improving spectrum peak method | |
| CN103678822B (en) | Mechanical environment prediction method of lunar probe soft landing impact | |
| CN103161348B (en) | Engineering structure multiple-target performance-based seismic resistance assessment method | |
| Lesiuk et al. | Fatigue damage analysis of offshore structures using hot-spot stress and notch strain approaches | |
| CN103473474A (en) | Energy efficiency computing method of traction elevator | |
| CN109977577B (en) | Gas-electricity coupling system reliability assessment method considering uncertainty of natural gas transmission and distribution pipe network | |
| CN107169187A (en) | A kind of ocean platform weight predictor method | |
| CN110516301A (en) | The seismic safety evaluation method of nuclear power plant's breakwater | |
| CN206220137U (en) | A kind of experimental provision for measuring and analyzing banket steel-pipe pile sedimentation and emergent property | |
| CN104807661A (en) | High-level and high-rise structure dynamic detection bearing capacity evaluating method | |
| Kim et al. | Structural model updating of the Gageocho Ocean Research Station using mass reallocation method | |
| CN102609392B (en) | High-end marine engineering equipment designs the quick calculation method in man-hour | |
| Kozłowski et al. | Methods for estimating the load bearing capacity of pile foundation using the results of penetration tests-case study of road viaduct foundation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20110504 Assignee: Ocean engineering Co., Ltd of Dalian Shipbuilding Industry Corporation Assignor: Dalian University of Technology Contract record no.: 2013210000078 Denomination of invention: Analysis and computation method for structural strength of elevating drilling platform Granted publication date: 20121107 License type: Exclusive License Record date: 20130716 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model |