悬链式单点系泊浮筒主尺度可行域研究

孙强; 彭东升; 张义明; 董庆辉; 岳前进; 吴峰; 阎军; 钟万勰

doi:10.21656/1000-0887.420115

悬链式单点系泊浮筒主尺度可行域研究

doi: 10.21656/1000-0887.420115

孙强^{1, 2,},
彭东升²,
张义明²,
董庆辉²,
岳前进¹,
吴峰¹,
阎军^1, ,,
钟万勰¹

1.
大连理工大学运载工程与力学学部，辽宁大连 116023
2.
大连船舶重工集团设计研究院有限公司，辽宁大连 116005

基金项目: 国家重点研发计划深海关键技术与装备重点专项（2017YFC0307800-02）；国家海洋工程装备研发及产业化专项（船重科[2014]735号）

详细信息

作者简介:
孙强（1986—），男，高级工程师，博士生（E-mail：sunqiang_0217@163.com）

阎军（1978—），男，教授，博士生导师（通讯作者. E-mail：yanjun@dlut.edu.cn）

中图分类号: TE53
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出版历程
- 收稿日期: 2021-04-28
- 录用日期: 2021-04-08
- 修回日期: 2022-01-07
- 网络出版日期: 2022-02-16
- 刊出日期: 2022-03-08

Feasible Region Study on Main Dimensions of CALM Buoys

1.
Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian, Liaoning 116023, P.R.China
2.
Dalian Shipbuilding Industry Engineering and Research Institute Co. , Ltd. , Dalian, Liaoning 116005, P.R.China

摘要

摘要:
为了能够设计合理的单点浮筒主尺度，归纳提出了悬链式单点浮筒5条主要设计原则。基于实际工程经验给出了浮筒重量的母型预估方法，探讨储备浮力，提出等干舷方案集，基于静力学原理和水动力分析探讨了浮筒的自由漂浮稳性及浮筒的运动响应，梳理了垂荡及摇摆随浮筒直径的变化规律。以25 m和100 m水深的浮筒直径上限和下限为边界建立可行域，分别以三个实际项目采纳的浮筒直径和45 m水深下单点浮筒直径的可行范围为参考，开展浮筒直径可行域的验证。研究表明：环境条件等不同因素也会引起相同水深下浮筒直径可行域的变化，因此在可行域的实际应用中应进一步考虑一定的偏差裕量。该文的可行域研究对于悬链式单点浮筒的主尺度确定具有积极的指导意义。
- 悬链式单点系泊浮筒 /
- 主尺度 /
- 可行域
Abstract:
To design reasonable main dimensions of catenary anchor leg mooring (CALM) buoys, 5 main design requirements were summarized. Based on practical engineering experiences, the mother model estimation method was established against the buoy weight. The reserve buoyancy was discussed, and the equal freeboard scheme set was proposed. The free floating stability of buoys was discussed based on the statics principle. Dynamic responses of buoys were discussed base on hydrodynamics, with the heave and roll characteristic vs. CALM buoy diameters presented. With the upper and lower limits on buoy diameters under 25 m and 100 m water depths as the boundary, a feasible region was built up. Its accuracy was verified in the actual engineer case under the 3 environmental conditions and by reference to the theoretical CALM buoy diameter feasible region under the 45 m water depth. The results show that, different factors, such as the environmental conditions, the mooring chain weight and others can influence the feasible region of buoy diameters, even under the same water depth. A deviation margin of the feasible region should be further considered in practical application. The study of the feasible region has a positive guiding significance to the determination of the main dimensions of CALM buoys.
- CALM buoy /
- main dimension /
- feasible region

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图 1 悬链式单点系泊系统

Figure 1. Catenary anchor leg mooring system

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图 2 浮筒干舷

Figure 2. The CALM buoy freeboard

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图 3 单点浮筒稳性

Figure 3. The CALM buoy stability

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图 4 单点浮筒垂荡

Figure 4. The CALM buoy heave

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图 5 单点浮筒摇摆

Figure 5. The CALM buoy roll & pitch

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图 6 装置浮筒水动力模型

Figure 6. The CALM buoy hydrodynamic model

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图 7 浮筒直径的可行域

Figure 7. The CALM buoy diameter feasible field

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表 1 环境条件

Table 1. Environmental conditions

parameter	unit	project 1		project 2		project 3
parameter	unit	operating condition	standalone condition	operating condition	standalone condition	operating condition	standalone condition
$ {H}_{\mathrm{s}} $	m	2.5	6	2.6	3.9	3	13
$ {T}_{\mathrm{p}} $	s	7.1	10.3	7.5	8.5	9.2	14.7
$ {V}_{\mathrm{w}} $	m/s	17.1	28.3	22	26	23.6	41.6
$ {V}_{\mathrm{c}} $	m/s	1.2	1.73	0.7	0.8	1.22	2.1

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表 2 油轮参数

Table 2. Tanker parameters

parameter	unit	full loading	ballast
$ T $	m	22.6	9.937
$\varDelta$	kg	3.671 2E+8	1.438 3E+8
$ {X}_{\mathrm{c}\mathrm{o}\mathrm{g}} $	m	170.18	171.04
$ {Y}_{\mathrm{c}\mathrm{o}\mathrm{g}} $	m	0	0
$ {Z}_{\mathrm{c}\mathrm{o}\mathrm{g}} $	m	17.3	11.62
$ {I}_{xx} $	kg·m²	8.26E+10	6.564E+10
$ {I}_{yy} $	kg·m²	2.35E+12	9.53E+11
$ {I}_{zz} $	kg·m²	2.35E+12	9.53E+11

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表 3 等干舷方案浮筒型深

Table 3. Buoy depths with equal freeboards

D/m	buoy depth with equal freeboard $ {W}_{\mathrm{F}\mathrm{B}} $/m
D/m	$ {W}_{\mathrm{D}} $=25 m	$ {W}_{\mathrm{D}} $=45 m	$ {W}_{\mathrm{D}} $=100 m
10	6.44	7.16	13.62
11	5.77	6.29	11.85
12	5.30	5.67	10.54
13	4.95	5.21	9.55
14	4.69	4.85	8.76
15	4.48	4.57	8.14
16	4.31	4.34	7.63
17	4.17	4.15	7.20
18	4.05	3.99	6.85

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表 4 浮筒初稳心高$ {H}_{\overline{GM}} $

Table 4. Buoy initial metacentric heights

D/m	buoy initial metacentric height $ {H}_{\overline{GM}} $/m
D/m	$ {W}_{\mathrm{D}} $=25 m	$ {W}_{\mathrm{D}} $=45 m	$ {W}_{\mathrm{D}} $=100 m
10	−0.51	−1.66	−5.17
11	0.38	−0.70	−3.89
12	1.37	0.36	−2.70
13	2.48	1.57	−1.55
14	3.72	2.93	−0.38
15	5.07	4.47	0.83
16	5.65	6.21	2.10
17	8.18	8.14	3.43
18	9.93	10.29	4.85

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表 5 浮筒横摇固有周期

Table 5. Buoy roll natural periods

$ D $/m	buoy roll natural period $ {T}_{\mathrm{n}} $/s
$ D $/m	$ {W}_{\mathrm{D}} $=25 m	$ {W}_{\mathrm{D}} $=45 m	$ {W}_{\mathrm{D}} $=100 m
10	−	−	−
11	14.97	−	−
12	8.42	17.10	−
13	6.85	8.70	−
14	6.13	6.95	−
15	5.76	6.17	15.26
16	5.50	5.71	9.48
17	5.38	5.45	7.85
18	5.29	5.27	6.82

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表 6 可行域偏差验证（45 m水深）

Table 6. Feasible area difference verification (water depth 45 m)

item	feasible region R_feasible／m	verified feasible region R_{verified-feasible}／m	difference δ／%
diameter upper limit	13.13	12.85	2.14
diameter lower limit	11.73	11.66	0.63

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参考文献(15)

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