ABS-78-1995.pdf
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1、AMERICAN BUREAU OF SHIPPING one within the midship region and another at the region of high shear forces. The collision damage is assumed to be located at the upper pari of the side shell, down from (and including) the stringer plate of the strength deck. The following members should be assumed to b
2、e damaged and excluded totally or partially, from the hull girder section modulus calculation (see Fig. 2). side shell plating for the vertical extent of 4 m or D/4, (designated as “h“ in Fig. 2), whichever is greater, down from the upper edge of the sheer strake, where D is the ship depth as define
3、d in 3/15 of the Rules. strength deck plating including the stringer plate to the extent from the side shell to the inner skin. Slope bulkhead plating, side stringers and diaphragms in the upper wing tanks, within the damaged zone for the extent of 0.5% of the vertical extent of the damaged side. al
4、l deck, side and other longitudinals and longitudinal stiffeners attached to the damaged plating. 5.0 RESIDUAL STRENGTH ASSESSMENT The assessment is to demonstrate that the appropriate residual longitudinal strength of the hull girder after an accident as specified in 2.0 is in compliance with the s
5、trength criteria given in 7.0 for a single trip from the site of accident to a repair yard under load conditions as specified in 6.0. The residual 2 Copyright American Bureau of Shipping Provided by IHS under license with ABS Licensee=Boeing Co/5910770001 Not for Resale, 08/07/2008 19:26:31 MDTNo re
6、production or networking permitted without license from IHS -,-,- ABS #78 95 = Ob53302 0033773 889 M K“S Hogging Kuw K u , Sagging K U , hull girder section modulus may be calculated using either a finite element model or a simplified method based on the assumed damage, as given in 3.0 or 4.0. The r
7、esidual bending strength should be analyzed for both collision and grounding situations. The residual shearing strength should be checked for collision, but need not be analyzed for grounding. O Grounding Collision 1.1 1 .o 0.5 0.7 0.9 1 .o 0.5 0.7 6.0 LOAD CRITERIA Residual strength of the damaged
8、hull-girder should be assessed based on the total longitudinal bending moments, M, and shear forces, F , , given as follows: kN-m (tf-m, Ltf-ft) kN (tf, Ltf) where M , , F , - - maximum still-water bending moment (hogging andlor sagging) and shear force (positive andlor negative), in intact conditio
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- ABS 78 1995
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