Deformation of Longitudinal Beam of End Plate for Integral Salvage of Ancient Ships

doi:10.16183/j.cnki.jsjtu.2023.S1.05

Abstract

Abstract:

For the integral salvage project of ancient sunken ships, the distributed optical fiber sensing technology is used instead of conventional deformation monitoring methods to monitor the deformation of the longitudinal beam and end plate during the overall lowering process of the “end plate longitudinal beam” frame. The monitoring results show that during the entire process of lowering the “end plate longitudinal beam”, the deformation of the end plate is controlled within 1.5 mm, and the deformation amount can be ignored. Due to the friction between the positioning pile and the “end plate longitudinal beam”, the maximum deformation of the longitudinal beam is 50 mm. Grinding and cutting the positioning pile can effectively reduce the deformation of the longitudinal beam, and the final deformation of the longitudinal beam is about 35 mm.

Key words: wreck, optical fiber monitoring, integral salvage, deformation monitoring

CLC Number:

TU391

ZHOU Dongrong, ZHU Xiaodong, WEI Liangmeng, JIANG Zhe, ZHUANG Qianwei, YUAN Yixiang, ZHANG Chi, YUAN Weihao. Deformation of Longitudinal Beam of End Plate for Integral Salvage of Ancient Ships[J]. Journal of Shanghai Jiao Tong University, 2023, 57(S1): 54-59.

Figures/Tables 13

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参数	取值
测量范围/m	100
最高分辨率/mm	1
应变测量范围×10⁶	±12 000
应变测量精度×10⁶	±1
温度测量范围/℃	-200~1200
温度测量精度/℃	±1

工况	无字侧变形量/mm	有字侧变形量/mm
入泥1 m	0.91	1.09
入泥2 m	0.94	0.64
入泥3 m	1.00	-0.11
入泥4 m	0.85	0.14
入泥5 m	0.85	0.24
入泥6 m	0.81	0.88
入泥7 m	0.70	1.14
下放到位	0.81	0.39

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