船体强力构件开孔及补强 _2_

船体强力构件开孔及补强

Hull mightiness structure

trepanning and reinforce

前言

Introduction

1范围

Extension

本标准规定了船体强力构件上的区域分类，开孔及补强。

About this standard provision classify, trepanning and reinforce of hull structure.

本标准适用于管系、电缆穿过船体强力构件时的开孔及补强。

About this standard supply hull mightiness structure hole and

reinforce when pipe system and cable through it.

22船体强力构件上的区域分类

Hull mightiness structure area and classify.

2.1船体强力构件上的区域分类见表1

Look under table 1

表1 区域分类

Table 1 Area classify

2.2横向构件上的区域划分按图1

Following picture area measure off of Transverse structure

a. 强横梁 strong beam

b. 横梁穿过纵桁

a. strong beam

b. the beam through longitudinal girder

Fig.1 图1 横向构件上的区域划分

2.2.1 决定B区域方法见图2。

Decide area B method following picture 2.

a).定O、A点；fix O ,A point.

b). ∠OAB不大于45度时取C点，∠OAB 大于45度时取B点； ∠OAB less than 45 degree choice point C,

∠OAB more 45 degree choice point B.

c). 按∠OBE或∠OCE’等于45度来定E或E’。

according ∠OBE or ∠OCE equal to 45 degree

we decide E or E’.

图2 决定B区域方法

Fig.2 Decide area B method

2.3纵强度构件的区域划分见图3。

Longitudinal mightiness structure area measure off.

a. 纵骨

b. 纵通制水板

c. 纵通桁材

Fig.3图3 纵强度构件的区域划分

2.4 平板龙骨上部肋板的区域划分见图4，α取值按2.2.1。

A part of rig on plane keel arrangement look following picture 4, α decide To 2.2.1

Fig.4 图4 平板龙骨上部肋板的区域划分

2.5 支柱端部构件的区域划分见图5。

a. 支柱无肘板 support pillar not bracket

b. 支柱两侧有肘板 two sides of stanchion have bracket

c. 支柱一侧有肘板 a side of stanchion have bracket

Fig.5 图5 支柱端部构件的区域划分

2.6 防挠材、肘板构件的区域划分见图6。

Area measure off about bracket, trust structure Picture 6.

a. 防挠材

b. 肘板

Fig.6 图6 防挠材、肘板构件的区域划分 2.7

a. 圆弧连接

b. 肘板连接

a. circle arc connection

b. floor plate connection

图7 肋板端部的区域划分

Fig7 Area division of ends of brackets

2.8 隔离舱内腹板的区域划分见图8。

In the cofferdam web plate area measure off Picture8.

Fig.8 图8 隔离舱内腹板的区域划分

2.9 中心线桁材端部的区域划分见图9。

Center line top of the girder area measure off Picture 9.

Fig9 图9 中心线桁材端部的区域划分

3. 开孔 trepanning

3.1 开孔一般要求trepanning usually requirement

3.1.1 C区域应避免开孔，如必须开孔时，应对材料性质、周围状况、负荷大小作充分考虑，以决定开孔位置、尺寸和补强方法。

C area should avoid trepanning, if have to trepanning we should consider

Material, environment and strong load on it, we should decide local of the trepanning, size and bolster up of the method.

3.1.2A区域及B区域开孔允许值按表1，表1中开孔尺寸符号见图10。

We should according table 1 decide A area and B area trepanning accept Value. Table 1 symbol and trepanning size Picture 10.

Fig.10 symbol and trepanning size

表1 开孔允许值

Table 1 the trepanning accept value

孔高b/型材高h

Hole high b/section bar high h

A区域 PART A B区域 PART B

构件名称及部位

Parts name and place

不补强

Not

bolster

up

补强

Bolster up

不补强

Not

bolster

up

补强

Bolster up

货油舱 Bulk oil space

a)

0.2

＞0.2

b)

≤0.5

a)

0.1

＞0.1 b)

≤0.25

货物舱、机舱、除货油舱以外的其他舱

Cargo tank, Engine room, Except bulk oil Space others 0.25

＞0.25

≤0.5

0.125

＞0.125

≤0.25

桁

材

girder

居住区、露天甲板

Accommodation Weather deck 0.33

＞0.33

≤0.5

0.165

＞0.165

≤0.25

船中0.75L外，中纵桁材

Out the center boat 0.75L Center line girder 0.4

＞0.4

≤0.5

0.2

＞0.2

≤0.25