A Three-Parameter Semi-Quantitative Risk Assessment Method for Off-Bottom Stage in Wreck Salvage

doi:10.16183/j.cnki.jsjtu.2023.S1.17

Abstract

Abstract:

Based on the time domain simulation of the dynamic response of the wreck salvage system in the off-bottom stage, this paper proposes a semi-quantitative safety assessment method for this process, aiming to summarize all motion modes of the salvaging mother ship and provide overall safety assessment scores of the wreck salvage system under different sea conditions. Based on the “Changjiang Kou 2” project, the sensitivity analysis of the system dynamic response under different wave direction angles is conducted. It is concluded that the two wave direction intervals (150°, 210°) and (330°, 30°) are relatively ideal salvage operation windows.

Key words: wreck salvage, time-domain simulation, risk assessment method

CLC Number:

P752

XIN Shangzhe, WANG Lei, PAN Jie, ZHOU Dongrong, CHEN Shihai, ZHU Xiaodong. A Three-Parameter Semi-Quantitative Risk Assessment Method for Off-Bottom Stage in Wreck Salvage[J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 13-19.

Figures/Tables 6

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References 7

[1]	KIM B S, BAE S Y, KIM W J, et al. A study on the design assessment of 50 kW ocean current turbine using fluid structure interaction analysis[J]. IOP Conference Series: Earth and Environmental Science, 2012, 15(4): 042037. doi: 10.1088/1755-1315/15/4/042037 URL
[2]	CHAUDHARY B, HAZARIKA H, ISHIBASHI I, et al. Sliding and overturning stability of breakwater under combined effect of earthquake and tsunami[J]. Ocean Engineering, 2017, 136: 106-116. doi: 10.1016/j.oceaneng.2017.03.021 URL
[3]	NGUYEN T H, GARRÈ L, AMDAHL J, et al. Monitoring of ship damage condition during stranding[J]. Marine Structures, 2011, 24(3): 261-274. doi: 10.1016/j.marstruc.2011.02.006 URL
[4]	BARRERA C, LOSADA I J, GUANCHE R, et al. The influence of wave parameter definition over floating wind platform mooring systems under severe sea states[J]. Ocean Engineering, 2019, 172: 105-126. doi: 10.1016/j.oceaneng.2018.11.018 URL
[5]	WANG J. A subjective modelling tool applied to formal ship safety assessment[J]. Ocean Engineering, 2000, 27(10): 1019-1035. doi: 10.1016/S0029-8018(99)00037-2 URL
[6]	FLAUS J M. Risk analysis[M]. Hoboken, NJ, USA: John Wiley & Sons, Ltd., 2013: 151-178.
[7]	辛尚哲, 王磊, 范锦宇, 等. 基于底质力时历计算的沉船打捞离底过程动力特性分析及系泊系统优化[J]. 上海交通大学学报, 2023, 57 (Sup.1): 1-12.
	XIN Shangzhe, WANG Lei, FAN Jinyu, et al. Dynamic characteristics analysis and mooring system optimization of wreck salvage in off-bottom stage based on seabed resistance force time history[J]. Journal of Shanghai Jiao Tong University, 2023, 57 (Sup.1): 1-12.

案例	分类	标准	状态	分数
驳船运动或缆张力的随时间的变化	安全性评估	P2阶段的R和M均小于P1和P3阶段	安全	1
		P2阶段的R或M大于P1和P3阶段平均值,但不是整个模拟过程的最大值	相对不安全	2
		P2阶段的R或M是整个模拟过程的最大值	不安全	3
	稳定性评估	P2阶段的C_v小于P1和P3阶段	稳定	1
		P2阶段的C_v大于P1和P3阶段平均值,但不是整个模拟过程的最大值	相对不稳定	2
		C_v的最大值出现在P2阶段	不稳定	3

D_w/(°)	运动	安全性得分	稳定性得分	组内得分	组间得分	S_DOF	S_T
90	纵荡	1	3	23	1	4	103
	横荡	3	3		7	42
	垂荡	3	1		7	28
	横摇	2	1		7	21
	纵摇	1	1		1	2
	首摇	1	3		1.5	6
105	纵荡	3	3	31	3.5	21	162
	横荡	3	3		6	36
	垂荡	3	3		4.5	27
	横摇	3	1		6	24
	纵摇	3	3		6	36
	首摇	2	1		6	18
120	纵荡	3	3	28	4.5	27	151
	横荡	2	3		5	25
	垂荡	3	1		4	16
	横摇	3	1		5	20
	纵摇	3	3		7	42
	首摇	2	1		7	21
135	纵荡	3	3	29	2.5	15	121
	横荡	2	3		4	20
	垂荡	3	1		5.5	22
	横摇	3	3		4	24
	纵摇	3	1		5	20
	首摇	2	2		5	20
150	纵荡	3	3	33	3.5	21	117
	横荡	3	3		3	18
	垂荡	3	1		4	16
	横摇	3	3		3	18
	纵摇	3	3		4	24
	首摇	2	3		4	20
165	纵荡	3	3	31	6	36	90
	横荡	3	3		2	12
	垂荡	3	1		1.5	6
	横摇	3	3		2	12
	纵摇	3	3		2.5	15
	首摇	2	1		3	9
180	纵荡	3	3	24	7	42	72
	横荡	1	3		1	4
	垂荡	3	1		1.5	6
	横摇	1	1		1	2
	纵摇	3	3		2.5	15
	首摇	1	1		1.5	3

[1]	XIN Shangzhe, WANG Lei, FAN Jinyu, ZHOU Dongrong, CHEN Shihai, ZHU Xiaodong. Dynamic Characteristics Analysis and Mooring System Optimization of Wreck Salvage in Off-Bottom Stage Based on Seabed Resistance Force Time History [J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 1-12.
[2]	PAN Jie, WANG Lei, WANG Yiting, ZHOU Dongrong, ZHU Xiaodong. Safety Analysis of Wreck Salvage Process Based on Skempton Function [J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 94-107.
[3]	LI Deng, ZHUANG Qianwei, HUANG Xin, ZHOU Dongrong, ZHU Xiaodong, ZHANG Chi, WEI Liangmeng. Pipe-Ground Interaction During Curved Pipe Jacking Process with a Small Radius of Vertical Curvature [J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 69-79.
[4]	ZHOU Dongrong, ZHANG Jiaming, ZHUANG Qianwei, HUANG Xin, ZHAI Yixin, ZHU Xiaodong, ZHANG Chi, ZHANG Zixin. CEL Numerical Analysis of Disturbance of Constructing Curved Beam Based on “Yangtze River Estuary II” Ancient Wreck [J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 60-68.
[5]	ZHU Xiaodong, ZHOU Dongrong, GAO Dingquan. Numerical Simulation of Coupled Dynamic Response of Integral Salvage of Large Tonnage Wreck [J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 203-212.
[6]	WEI Liangmeng, ZHU Xiaodong, YI Qian, CUI Jin, ZHOU Dongrong. Lifting and Lowering of Salvage Frame for Integral Salvage of Large Tonnage Wreck [J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 170-177.
[7]	ZHUANG Qianwei, YUAN Weihao, ZHANG Chi, YUAN Yixiang, LI Yanlong, ZHOU Dongrong. Key Technology for Mechanical and Structural Design of Rectangular Curve Bottom Curtain Method for Salvage of “Yangtze River Estuary II” [J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 138-144.
[8]	Jin-long MEN, Jin-song XU, Hao SHI, Zuo-xin HOU. Time-Domain Simulation of OSV Operation [J]. Ocean Engineering Equipment and Technology, 2014, 1(2): 140-145.