本科毕业设计(论文)

题目： （桥名）大桥设计

院 （系）： 公路学院 专 业： 桥梁与渡河工程 班 级： 学 生： 郭俊 学 号： 指导教师：

20010年3月

摘要

题目背景和意义：根据该桥梁所处的地形、地质和水文资料，充分发挥想象力，将所学的基础理论和专业理论知识联系，针对当地造桥条件，为指定的桥位提出各种可能采用的桥型方案，进行比较，择优推荐，为选出的桥型进行结构设计，绘制设计图。通过毕业设计，使学生基本上掌握桥梁设计的过程和方法，学会考虑问题、分析问题和解决问题的方法，进一步巩固己学课程，并能查阅资料，熟悉和理解公路工程技术标准，正确地应用公路桥涵设计规范。从而在以后的工作实践中，能够逐步掌握桥梁结构的设计方法。

设计的主要内容：㈠、根据所给的桥位地质、地形和水文资料，按适用、经济、安全、美观的原则，至少选择3个可比性桥型方案，推荐一种桥型方案。㈡、就推荐的设计方案完成下列内容：1、全桥的纵、横、平面布置，并合理拟订上、下部结构的细部尺寸。对一跨或一个受力单元进行受力分析，计算各种作用荷载及非荷载因素所产生的内力，并进行荷载组合。验算结构构件的强度、刚度与稳定性。如不符合要求，则需修改设计或提出修改设计的措施。根据桥梁所处位置、环境和施工力量的配备情况，选择合理可行的施工方案与方法，以及主要的施工程序。

关键词：预应力混凝土梁桥；预应力中承式拱桥；预应力钢筋

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The Design for （填写桥梁名称）Bridge

Abstract

Background and significance of the topic: According to the bridge the geographical, geological and hydrological information, give full play to the imagination, will have learned the basic theory and theoretical knowledge of professional contacts to build a bridge for the local conditions for the proposed bridge site designated by the various possible bridge-program used for comparison, merit-based recommendations for the selected type of structural bridge design, drawing design. Through the graduation project, so that students master the bridge design is basically the process and methods and learn to consider the issues, analyze problems and to solve problems, to further consolidate their own course, and access to information, and is familiar with and understand the technical standards of highway engineering,Application of the correct design specifications of highway bridges and culverts. Future work in practice, be able to gradually master the design method of bridge structures.

Design of main elements: i, according to the bridge site to the geology, topography and hydrological data, according to the application of economic, security, aesthetics, the principles of choice of at least three comparable bridge-program, recommended by a bridge-type program. Ii, on the recommendation of the design elements to accomplish the following: 1 , full-bridge of the longitudinal and transverse, layout, and to develop reasonable, the size of the lower part of the structure in detail. Of a cross or a power unit for mechanical analysis of the role of computing a variety of load and non-load generated by the internal force factors and load combination. Checking structural strength, rigidity and stability. If not, the Need to modify the design or measures to propose a revised design. According to the bridge location, environment and construction with the power of circumstances, reasonable and feasible programs and methods of construction, as well as major construction procedure.

Keywords:Prestressed concrete beam bridge；Prestressed-arch bridge；Prestressed reinforced

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目录

中文摘要…………………………………………………………………I 英文摘要…………………………………………………………………II 主要符号表 ................................................................................................. I 1 绪论 ................................................................................................ （1）

1.1前言 ......................................................................................................................................... (1) 1.2国内外现状 .......................................................................................................................... (1) 1.3本文主要研究内容 ............................................................................................................ (1)

2 桥梁设计总说明 ................................................................................. (3)

2.1设计背景及当地地质条件 .............................................................................................. (3) 2.2设计标准 ............................................................................................................................... (3) 2.3主要设计技术规范 ............................................................................................................ (3)

3 桥型比选 .............................................................................................. (5)

3.1桥梁设计原则 ...................................................................................................................... (5) 3.2拱桥 ......................................................................................................................................... (5) 3.2.1构思宗旨 ...................................................................................................................... (5) 3.2.2国内外成桥资料 ........................................................................................................ (6) 3.2.3尺寸拟定 ...................................................................................................................... (6) 3.3斜拉桥 .................................................................................................................................... (7) 3.3.1构思宗旨 ...................................................................................................................... (7) 3.3.2国内外成桥资料 ........................................................................................................ (8) 3.3.3尺寸拟定 ...................................................................................................................... (8) 3.4连续梁桥 ............................................................................................................................... (9) 3.4.1构思宗旨 ...................................................................................................................... (9) 3.4.2国内成桥资料 ........................................................................................................... (10) 3.4.3尺寸拟定 .................................................................................................................... (10)

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