Numerical Simulation of Coupled Dynamic Response of Integral Salvage of Large Tonnage Wreck

doi:10.16183/j.cnki.jsjtu.2023.S1.23

Abstract

Abstract:

A wreck salvage scheme is designed for the integral salvage of “Yangtze River Estuary II” ancient ship, and the dynamic response of the critical state of salvage is investigated via numerical simulation. Comprehensive studies including the motion response characteristics of the multi-body coupling system and the tension of the cable under different sea conditions are conducted. The results show that the instability of the salvage system increases under the transverse sea condition, and the operation risk is obviously higher than other waves of the same wave level conditions. In addition, the tension responses of lifting cables and mooring cables are higher in the off-bottom stage than that of the submerged part of the wreck. The numerical results demonstrate the feasibility of the salvage scheme, providing reference for decision-making on sea conditions to avoid the risk of salvage operation.

Key words: wreck salvage, coupling system, numerical simulation, dynamic response

CLC Number:

U674.23

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.

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类型	参数	数值	类型	参数	数值
开口驳	总长/m	130.0	水下沉船遗址	总长/m	46
	垂线间长/m	13.0		型宽/m	19
	型宽/m	34.0		型深/m	9
	型深/m	9.0		质量/t	8800
	设计吃水/m	6.0		—	—
	空船质量/t	6000		—	—

工况编号	方向/ (°)	波浪参数			风速/ (m·s^-1)		流速/ (m·s^-1)
工况编号	方向/ (°)	波高,H_s/m	谱峰周期,T_p/s		风速/ (m·s^-1)		流速/ (m·s^-1)
A1	0	0.5	5	10.8		2
A2	45	0.5	5	10.8		2
A3	90	0.5	5	10.8		2
A4	135	0.5	5	10.8		2
A5	180	0.5	5	10.8		2
A6	0	0.5	7	10.8		2
A7	45	0.5	7	10.8		2
A8	90	0.5	7	10.8		2
A9	135	0.5	7	10.8		2
A10	180	0.5	7	10.8		2

类别	驳船横摇	驳船纵摇	沉船横摇	沉船纵摇
实测	0.57	0.10	0.75	0.54
A2	0.09	0.09	0.10	0.05
A7	0.24	0.32	0.26	0.33

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