The flexible floating collision-prevention system (FFSCS) is a valuable floating engineering structure that can be used to prevent the uncontrolled ships to collide with the non-navigational bridge of a large sea-crossing bridge. The system is composed of buoys, block chains, mooring chains and gravity anchors. The deformation of the system under the acting of an uncontrolled ship as well as the movement distance of the gravity anchors are important factors that should be considered by the system designers. Based on the analysis of the relationship between the forces and the deformation of each part of the system, the approximately static equations are solved by a new numerical iterative calculation method. The position changes of the buoys, the movements of the anchors and the history of the inner forces of the block chains when a ship collides with the FFSCS are obtained by iterative calculation. The good agreement between the numerical value and the results of the model test indicate that the small balance method is a validation on the motion response simulation of the FFSCS under the acting of the uncontrolled ship. The results validate that FFSCS can stop the uncontrolled ship before it arrives at the place of the bridge.

References

References
1.
Povel
,
D.
,
Bertram
,
V.
, and
Steck
,
M.
,
2010
, “
Collision Risk Analyses for Offshore Wind Energy Installations
,”
Proceedings of the International Offshore and Polar Engineering Conference
,
1
,
pp.
745
751
.
2.
Ren
,
N.
, and
Ou
,
J.
,
2009
, “
Dynamic Numerical Simulation for Ship-OWT Collision
,”
Proceedings of 8th International Conference on Reliability and Safety-ICRMS 2009
,
Paper No. 5269985
.
3.
Hu
,
Z.
,
Xiao
,
L.
,
Cui
,
W.
, and
Yang
,
J.
,
2007
, “
Research on Collision Mechanisms for a Ship Colliding With a Spar Platform
,”
Proceedings of the 26th International Conference on Offshore Mechanics and Arctic Engineering-OMAE
, San Diego, CA, June 10-15,
2
,
pp.
69
77
.
4.
Sun
,
L.
, and
Li
,
W.
,
1989
, “
Dynamic Response of Ship Collisions With Floating Platform
,”
Proceedings of 8th International Conference on Offshore Mechanics and Arctic Engineering II
,
The Netherlands
,
March
19–23
,
New York
,
pp.
653
656
.
5.
Yoyama
,
Y.
,
2009
, “
Drift-Wood Collision Load on Bow Structure of High-Speed Vessels
,”
Mar. Struct.
,
22
(
1
),
pp.
24
41
.10.1016/j.marstruc.2008.06.004
6.
Tam
,
C. K.
,
Bucknall
,
R.
, and
Greig
,
A.
,
2009
, “
Review of Collision Avoidance and Path Planning Methods for Ship in Close Range Encounters
,”
J. Navigation
,
62
(
3
),
pp.
455
476
.10.1017/S0373463308005134
7.
Minorsky
,
V. U.
,
1959
, “
An Analysis of Ship Collisions With Reference to Protection of Nuclear Powered Plants
,”
J. Ship Research
,
3
(
1
),
pp.
1
4
.
8.
Minorsky
,
V. U.
,
1983
, “
Evaluation of Ship-Bridge Pier Impact and of Islands as Protection
,”
Reports of the Working Commissions (International Association for Bridge and Structural Engineering
,
41
,
pp.
131
145
.
9.
Woison
,
G.
,
1979
, “
Design Against Collision
,”
Schiff and Hafen
,
31
(
2
),
pp.
1059
1069
.
10.
Petersen
,
M. J.
,
1982
, “
Dynamics of Ship Collision
,”
Ocean Eng.
,
9
(
4
),
pp.
295
329
.10.1016/0029-8018(82)90026-9
11.
Petersen
,
M. J.
, and
Pedersen
,
P. T.
,
1981
,
Proceedings of the Annual Offshore Technology Conference
,
4
,
pp.
163
171
.
12.
Petersen
,
P. T.
,
2010
, “
Review and Application of Ship Collision and Ground Analysis Procedures
,”
Mar. Struct.
,
23
,
pp.
241
261
.10.1016/j.marstruc.2010.05.001
13.
Fan
,
W.
,
Yuan
,
W.
,
Yang
,
Z.
, and
Fan
,
Q.
,
2011
, “
Dynamic Demand of Bridge Structure Subjected to Vessel Impact Using Simplified Interaction Model
,”
J. Bridge Eng.
,
16
(
1
),
pp.
117
126
.10.1061/(ASCE)BE.1943-5592.0000139
14.
Chen
,
X. J.
,
Shi
,
J.
,
Yu
,
Q. L.
, and
Huang
,
G. Y.
,
2007
, “
Solution Method for Equilibrium Position of Moored Floating-Body in Current
,”
Journal of PLA University of Science and Technology (Natural Science Edition)
,
8
(
4
),
pp.
362
367
(in Chinese).
15.
Chen
,
X. J.
,
Huang
,
G. Y.
,
Wu
,
G. H.
, and
Shi
,
J.
,
2009
, “
Energy Balance Relationship in Collision Between Ship and Moored Collision-Prevention System
,”
Journal of PLA University of Science and Technology (Natural Science Edition)
,
10
(
1
),
pp.
71
77
(in Chinese).
16.
Wei
,
J. D.
, and
Liu
,
Z. Y.
,
2005
, “
Four Sets of Static Solutions for Elastic Catenary
,”
Spatial Structures
,
11
(
2
),
pp.
42
45
(in Chinese).
17.
He, Z., Ding, J. L., Shi, Q. Z., Du, Y. R., Wu, S. R., Gao, J. Q., Gao, S. M., and Xu, D. P.
,
2003
, “
Load Code for Harbour Engineering,
Ministry of Communications of PRC
, JTJ215-98,
China Communication
,
Beijing
(in Chinese).
18.
Chen
,
X. J.
,
Huang
,
G. Y.
,
Wu
,
G. H.
, and
Yu
,
W.
,
2011
, “
A New Numerical Method for Flexible Floating Collision-Prevention System and its Convergency Discussion
,”
Journal of PLA University of Science and Technology(Natural Science Edition)
,
12
(
5
),
pp.
501
506
(in Chinese).
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