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发表于 2011-7-22 11:17
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来自： 中国山东日照
LR Part 3, Chapter 10 Section 5
5.6 Bilge keels and ground bars
5.6.1 It is recommended that bilge keels should not be
fitted in the forward 0,3L region on ships intended to navigate
in severe ice conditions.
5.6.2 Bilge keels are to be attached to a continuous
ground bar as shown in Fig. 10.5.5. Butt welds in shell
plating, ground bar and bilge keels are to be staggered.
5.6.3 The minimum thickness of the ground bar is to be
equal to the thickness of the bilge strake or 14 mm, whichever
is the lesser.
5.6.4 The material class, grade and quality of the ground
bar are to be in accordance with Table 2.2.1, Note 11 in
Chapter 2.
5.6.5 The ground bar is to be connected to the shell with
a continuous fillet weld and the bilge keel to the ground bar
with a light continuous fillet weld.
5.6.6 Direct connection between ground bar butt welds
and shell plating, and between bilge keel butt welds and
ground bar is to be avoided.
5.6 舭龙骨及其垫板
5.6.1 拟于严重冰情下航行船舶,建议在船前部0.3L区域内不设置舭龙骨。
5.6.2 舭龙骨应连接在一连接的垫板上,如图10.5.5所示。外板、垫板与舭龙骨的对接焊缝应相互错开。
5.6.3 垫板的最小厚度应与舭列板的厚度相等,或取14mm,取其中之较薄者。
5.6.4 垫板材料之类别、等级与质量应符合第2章表2.2.1附注11的要求。
5.6.5 垫板应采用连续填角焊与外板相连,而舭龙骨与垫板的连接则应用小焊脚的填角焊。
5.6.6 在垫板的对接缝与外板之间,以及舭龙骨的对接缝与垫板之间,均应避免直接连接。
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