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http://dx.doi.org/10.12989/sem.2014.49.3.311

Safety analysis and design of full balanced hoist vertical shiplifts  

Liao, Lekang (Chang Jiang Institute of Survey PIanning Design and Research)
Publication Information
Structural Engineering and Mechanics / v.49, no.3, 2014 , pp. 311-327 More about this Journal
Abstract
The safety relating to leakage of water and pitch instability of ship chambers of the full balanced hoist vertical shiplifts has been the focus of adoption of the type of vertical shiplifts. This paper aims to remove the doubts through theoretical and engineering researches. The leakage and pitch stability of ship chambers of full balanced hoist vertical ship lifts are investigated on the basis of theoretical analysis and exploration of engineering measures. Regarding the issue of leakage of ship chambers, a mathematical model on leaking process is built and corresponding formula and coping measures are obtained which can be applied in control program of ship lifts by linking with monitoring. The concept of safety grade is put forward to seek the best technical and economic index and the corresponding technical measures are for different grades of ship lift is suggested. For the issue of pitch instability, a methodology of combining theoretical deduction and summary of achievements of design and operation of the type of the full balanced hoist shiplifts is adopted, and the formula for design about pitch stability of ship chambers is derived.
Keywords
full balanced hoist vertical shiplift; ship chamber; safety; leakage; pitch stability; critical leakage time; critical pitch angle; critical longitudinal centre distance of a hoist for dynamic pitch stability; safety coefficient for pitch dynamic stability;
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  • Reference
1 Akkermann, J., Runte, T. and Krebs, D. (2009), "Ship lift at Three Gorges Dam, china-design of steel structures", Steel Constr., 2(2), 61-71.   DOI
2 Chen, J.Z., Bao, G.J. and Ma, G.Y. (1996), "Chamber stability of hoisting fully balancing type vertical shiplift", Hydro-Science and Engineering, 4, 301-308.
3 Cheng, G.D., Li, H.T. and Ruan, S.L. (2005), "Free vibration characteristics and stability analysis of shiplift System", J. Mech. Strength, 27(3), 276-281.
4 Herwig, B. (2010), The new Ship's hoist Niederfinow, Wasser-und Schifffhrtsverwaltung des Bundes.
5 Li, H.T. (2006), "Coupled dynamic problems of the Three Gorges shiplift", Doctoral Dissertation of Dalian University of Technology, China.
6 Liao, L.K. and Shi, D.W. (1996), "Coupled vibration analysis of torsion of hoist and pitch of ship chamber of shiplift", Yangtze River, 27(9), 19-22.
7 Liao, L.K. and Shi, D.W. (1996), "Analysis of motion stability of shiplifts in suspension state", Water Conserv.Elec.Power Mach., 6, 9-12.
8 Niu, X.Q. and Song, W.B. (2007), Design of ship lock and shiplift, China Water Power Press, China.
9 Niu, X.Q., Qin, L.M. and Yu, Q.K. (2011), "The design of gear-rack climbing type ship-lift of Three Gorges project", Eng. Sci., 13(7), 96-103.
10 Schinkel, E. (2001), Schiffs Lift, Westfalisches Industriemuseum.
11 Tang, G.J. (2009), "Investigation understandings of German shiplift technique and management", Port Waterw. Eng., 344(9), 1-4.
12 Wang, Y.X. and Hu, X.W. (2008), Overall design of 2${\times}$500t vertical ship lift of ShuiKou hydraulic power station, Technology for Hydraulic Machinery Essay Collection in 2008.
13 Wasser-und Schifffahrtsdirektion Ost (2005), "The Niederfinow boat lift", Eberswalde Office of Waterways and Shipping, www.wsa-eberswalde.de.
14 Wu, X.N. and Yu, Q.K. (2003), Research project for comparison and selection of the plan of main parts of the Three Gorges shiplift, China Three Gorges Construction Yearbook.
15 Yang, C. and Zeng, X. (1992), "A study on integral dynamic characteristics of chamber of ship lift of the Three Gorges project", J. Yangtze River Sci. Res. Ins., 9(2), 12-20.
16 Zhu, S.H., Zhou, C. and Liu, D.H. (2202), "Study on dynamic properties of ship-Lift during water-losing from ship chamber of Three Gorges project", J. Yangtze River Sci. Res. Ins., 19(3), 9-11.