摘   要：本文的主要内容是36米拖船船体结构规范设计。本船为钢质结构，拥有双层底、单甲板的结构特点，采用双机双桨全回转式的推动。船的主体，双层底、单甲板均采用横骨架式的结构形式，所用的钢材为普通船体结构钢。本文设计的拖船适用于无限航区。

在毕业设计过程中，参考了一系列图书馆，互联网的文献资料。设计的盲点，我通常找老师和同学了解一些惯例。指导老师给予了型线图和总布置图，通过不同图之间的联系，获得设计的灵感。不断的查规范CCS《钢质海船入级和建造规范》（2006版），让我对茫茫的规范有了初步的认识，最终按规范做了初步的设计，完成了设计后，再进行校核，对于校核不满足的，修改设计。完成了总纵强度的校核后，有CAD绘制货舱横剖面图、机舱横剖面图、基本结构图。

在本船的设计过程中，遵循结构规范设计的一般原则：结构的整体性原则；受力的均匀性和有效传递的原则、结构的连续性原则和减小应力集中、局部加强原则。除此之外，鉴于船舶的经济性，本船在设计的时候，运用了初步选取构件，逐步优化构件尺寸的设计思想。

关键词：拖船 ；结构设计；基本结构图；典型横剖面图

Abstract：The main content of this paper is 36 m tug hull structure specification design. The ship is steel, double shell, single deck, double sculls all rotation.The main body of the ship, double bottom, single deck structure are cross-frame type, steel using ordinary hull structural steel. The design area of the ship is unlimited.

In the process of graduation design, the first research, through the usual accumulation, the library, the Internet information, etc., on the tug of the structure and characteristics of the initial understanding; and then learn and understand the instructor to the line diagram, the total layout And CCS "steel ship classification and construction specifications" (2006 version), and gradually form a tugboat structure design concept; then, the structural design and cross-sectional map, the basic structure of the drawing. The whole design process, completed the total longitudinal strength of the check, drawing the cargo section of the cross-section, the cabin cross-section, the basic structure.

In the design process of the ship, follow the general principles of structural design: the principle of structural integrity; the uniformity of force and the principle of effective transmission, the principle of structural continuity and reduce the stress concentration, local strengthening principle. In addition, in view of the ship's economy, the ship in the design of the time, the use of the initial selection of components, and gradually optimize the design of component size.

Keywords: Container ship, Structure design, Basically structure plan,Transverse ship section plan

目    录

第一章 绪  论1

1.1 概述-1

1.2拖船的发展历史1

1.3拖船的结构特点--1

1.4国内外拖船1

1.5拖船的研究现状和市场前景2

第二章  船体结构规范设计-3

2.1  设计标准--3

2.2  结构形式-3

2.3  船舶主尺度与尺度比3

2.4 外板-3

2.4.1 船底板-3

2.4.2平板龙骨--5

2.4.3舭列板5

2.4.4舷侧外板5

2.4.5舷顶列板-6

2.5甲板--7

2.5.1主甲板7

2.5.2甲板边板8

2.5.3甲板开口-8

2.5.4升高甲板--8

2.6双层底-8

2.6.1双层底高度--8

2.6.2中桁材-8

2.6.3旁桁材-9

2.6.4实肋板9

2.6.5内底板--9

2.6.6 舭肘板9

2.7舷侧骨架--10

2.7.1 肋骨间距--10

2.7.2肋骨--10

2.7.3 舷侧纵材11

2.8甲板骨架11

2.8.1 甲板横梁-11

2.8.2 甲板纵材--12

2.8.3甲板强横梁--12

2.8.4 舱口甲板纵桁-13