论文总字数：54428字

摘 要

2X20m普通钢筋普通钢筋进行配筋，截面形式采用箱型截面，桥宽一般满足双车道运营的要求。通过毕业设计，能理解桥梁设计的过程和内容，将大学四年所学的课本理论知识综合运用于设计过程中，能主动的查阅，运用相关文献，自我发现并解决问题，独立自主的完成各设计环节。

设计中使用autocad完成桥梁图纸的绘制，使用桥梁博士对桥梁上部结构进行了验算，输入了普通钢筋并考虑了各个阶段的最不利组合，考虑了温度升降和支座的不均匀沉降，完成了桥梁强度，挠度，剪力的验算。

关键词：桥梁博士;autocad;强度验算;剪力验算;挠度验算

Abstract

Ordinary reinforced concrete continuous beam bridge 2X20m is urban viaduct, especially ramp, very common a kind of bridge, material made of concrete, and the use of ordinary steel reinforcement, section forms with box section, the width of the bridge general satisfaction the requirements of the two lane operations. Through the graduation design, can understand the process and content of bridge design, the University for four years to learn the textbook theory knowledge of integrated transport for the design process, to active access, the use of literature, self discovery and problem solving, independent completed the design process.

Design using AutoCAD completed bridge drawing drawing, using the bridge upper structure of the bridge are checked, input the ordinary reinforced and considered the most unfavorable combination of various stages, taking into account the temperature lift and support the uneven settlement of and completed the bridge strength, deflection, shear checking.

Key words: Dr. bridge, AutoCAD, strength check, shear stress, deflection

目录

摘要……………………………………………………………………………………………………………Ⅰ

abstract………………………………………………………………………………………………………Ⅱ

第一章 概述…………………………………………………………………………………………………1

1.1桥梁概况……………………………………………………………………………………………1

1.2设计任务……………………………………………………………………………………………1

1.3设计标准……………………………………………………………………………………………1

1.4设计规范……………………………………………………………………………………………1

1. 桥梁设计……………………………………………………………………………………………2-4

2.1桥梁总体规划………………………………………………………………………………………2

2.2上部结构……………………………………………………………………………………………2

2.3钢筋布置……………………………………………………………………………………………3-4

2.3.1受力钢筋……………………………………………………………………………………3

2.3.2分布钢筋……………………………………………………………………………………3

2.3.3纵向受力钢筋………………………………………………………………………………3

2.3.4箍筋…………………………………………………………………………………………3

2.3.5弯起钢筋……………………………………………………………………………………3

2.3.6架立钢筋……………………………………………………………………………………3

2.3.7纵向构造钢筋………………………………………………………………………………3

2.4桥面铺装……………………………………………………………………………………………4

2.5混凝土耐久性设计…………………………………………………………………………………4

第三章 结构验算…………………………………………………………………………………………5-48

3.1桥梁博士简介与使用………………………………………………………………………………5

3.2设计参数……………………………………………………………………………………………5

3.3桥梁模型……………………………………………………………………………………………5-6

3.4施工信息……………………………………………………………………………………………6

3.5边界条件……………………………………………………………………………………………6

3.6使用信息……………………………………………………………………………………………6

3.7单元截面特征表…………………………………………………………………………………6-11

3.8承载能力极限状态基本组合正截面强度验算…………………………………………………11-22

3.8.1效应组合公式……………………………………………………………………………11

3.8.2正截面强度计算…………………………………………………………………………12-22

3.9抗剪计算汇总结果………………………………………………………………………………22-27

3.10裂缝验算………………………………………………………………………………………27-32

3.11挠度验算………………………………………………………………………………………32-34

3.12使用阶段位移…………………………………………………………………………………34-47

3.12.1 结构重力造成的位移…………………………………………………………………34-37

3.12.2升温温差引起的位移…………………………………………………………………37-40

3.12.3降温温差引起的位移…………………………………………………………………40-43

3.12.4收缩荷载引起的位移…………………………………………………………………43-45

3.12.5徐变荷载引起的位移…………………………………………………………………45-48

3.13支座反力汇总……………………………………………………………………………………48

1. 施工过程……………………………………………………………………………………………49

4.1施工方法……………………………………………………………………………………………49

4.2满堂支架法介绍……………………………………………………………………………………49

1. 总结…………………………………………………………………………………………………50

5.1主要工作内容………………………………………………………………………………………50

5.2主要存在的问题……………………………………………………………………………………50

5.3工作体会……………………………………………………………………………………………50

参考文献………………………………………………………………………………………………………51

致谢……………………………………………………………………………………………………………52

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