Open Access Open Access  Restricted Access Subscription or Fee Access

Design Problems for Existing Dry Dock Gates for Graving Docks and Trends to be Followed in Design of Mitre Type Dock Gates

V.V.S. Prasad, Bh. Nagesh

Abstract


Dry dock is a structured zone wherein construction, repairs and maintenance of merchant vessels and boats are carried out. Presently, in India, there are so many docks which are under both private control and as well as Indian Navy control, which have their gates in their life end states and are still being operated under very unsafe conditions. In this regard, Indian Navy has recognized to replace most of the dock gates with new state of the art design and most modern type of gates. A modern dry dock gate, when compared to its predecessors, differs significantly in terms of dimensions, materials, construction and sophistication of equipment; but the basic principles of operation and design remain the same. Every dock gate has its own set of operational parameters which include the important parameters such as (i) entrance width, retained water height, tidal range, speed of operation, weight limitations, seismic resistance, vessel impact, vehicle loading and reverse hydrostatic loading. Material of construction and advances in materials and methods of construction have continually expanded the dimensional limits of dry docks and as well as their gates. In this paper, the authors have particularly emphasized the design problems for the existing gates and new technologies and methodologies to be adopted in the selection and design of the new gates for the existing dry docks while replacing the existing gates. The procedural approach and methodology to be followed for selection of different types of gates such as Caisson Gates, Flap Gates and Mitre Gates etc., have been emphasized in this technical paper.

Full Text:

PDF

References


Daniel Ryszard A. Mitre Gates in Some Recent Lock Projects in the Netherlands. Stahlbau. 69, Jahrgang; Dec 2000; 69(12): 952–964p.

Terata H, Shigenaga N. Torsion type Flap Gate for Docks. Mitsubishi Heavy Ind Tech Rev. 1980; 17(2): 149p.

Mitre Gate Design & Operation. Terms of Reference and Documentation Published by PIANC, a World Association for Waterborne Transport Infrastructure. 2017.

Steven Hutchinson, Martin Young, Alasdair Macleod. Caisson Breakwater Design for Sliding. Coastal Engineering Proceedings. 2010; (32): 14p.

Gokarn RP, Misra SC. Design of Flap Type Lock Gates. Jan 1985.

Litvin FL. Application of Finite Element Analysis for Determination of Load Share, Real Contact Ratio, Precision of Motion, and Stress Analysis. Journal of Mechanical Design, Transactions of the American Society of Mechanical Engineers (T-ASME). 1996; 118(4): 561–567p.

Graving Dry Docks Design Manual 29.1. Published by Department of the Navy, Naval Facilities Engineering Command, 200 Stovall Street, Alexandria, Virginia 22332. 1982.

Project Report on Heger Dry Dock Inc., on Replacement of Caisson Gate for NNSY Graving Dock #1.

Project Report on Rehabilitation of Historic Dry Dock #2, of United States Navy.

Engineering and Design. Lock Gates and Operating Equipment. Project Document Released by Department of the Army US Army Corps of Engineers Washington, DC 20314-1000 (Distribution unrestricted).




DOI: https://doi.org/10.3759/joost.v6i1.548

Refbacks

  • There are currently no refbacks.