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主跨40m预应力混凝土先简支后连续T梁桥设计

时间:2018-01-10 10:35来源:毕业论文
根据国家现行规范和目前同类结构设计中的做法选定最优桥型,紧接着便运用桥梁博士对模型进行设计与计算。最后,便整理出相应的计算结果,通过桥博导出一些数据,并运用cad画出
摘要随着高等级公路的迅速发展,增加了许多中等跨径的桥梁。桥面连续的简支梁结构体系由于存在桥面容易开裂等缺点在与连续梁结构体系的竞争中常常处于下风。但是现浇连续梁的费时费力、施工复杂繁琐,由此产生了先把整垮梁板预制、架设就位,然后在端部浇注混凝土并张拉预应力钢束使之先简支连续的先简支后连续施工方法。
本次设计就是根据本专业毕业设计任务书的要求和《公路桥涵设计规范》的相关规定,对浏阳河大桥进行方案比选和结构设计。
首先根据国家现行规范和目前同类结构设计中的做法选定最优桥型,紧接着便运用桥梁博士对模型进行设计与计算。最后,便整理出相应的计算结果,通过桥博导出一些数据,并运用cad画出相应的施工设计图。17322
通过认真分析地质调查勘测资料之后,本着“经济、实用、美观、安全”的基本设计原则,通过对设计、施工等多方面的考虑,最终我选择了预应力混凝土先简支后连续T梁桥。
关键词: 预应力混凝土  桥梁设计  先简支后连续T梁
毕业设计说明书(论文)外文摘要
Title  Design of a PC Simple Supported-Continuousspan T—beam bridge with Main Span of 3×40m   
Abstract
With the rapid development of high-grade highway, alot of bridges of middle-length increases substantially. Simply supported girder bridges with continuous decks are inferior to those of continuous girder bridges because their decks crack easily. Owing to the complex construction of continuous girder bridges, which is time-consuming and laboursome, Thus the simply supported-continuous construction method, which is applied to erect full span girders by the prefabrication technology first and then pour concrete in the end region of the girders and tension prestressed tendons to make them continuous, is introduced. 源自六/维\论]文[网!加7位QQ324.9114 www.lwfree.cn
This is a comparing of design plans and structural designing of Liu Yang River Bridge, according to designing assignment and the General Code for Desigh of Highway Bridges and Culverts.
Firstly, the optimal bridge type is defined according to existing national specifications and the practice in current similar designs.
Secondly, it is the use of Dr. bridgeV3.0 for the design and calculations of simply supported-continuous prestressed concrete continuous girder bridge.
Finally,make the calculations,,and use CAD to make the mapping of drawings.
With a seriously study of geology data in the bridge site. Based on the basicprinciples of "safety, economy, beauty and practicality”,with the consideration of design and construction, finally I choose prestressed concrete simple supported-continuous T- beam bridge.
Key Words:prestressedconcrete bridgedesignsimple supported-continuous T-beam bridge
目  录
1绪论    1
1.1预应力混凝土先简支后连续梁桥概述    1
1.2设计说明    1
1.2.1 工程概况    1
1.2.2 设计标准与规范    1
1.2.3 设计标准及技术条件    2
1.2.4 主要材料    2
1.2.5 桥位自然条件    2
1.2.6 毕业设计的目的与意义    3
2桥型方案的比较与选择    4
3梁桥纵、横断面设计    13
3.1 设计基本资料    13
3.2 梁桥纵、横断面设计    15
3.2.1 施工方式    15
3.2.2梁桥纵、横断面设计    16
4主梁内力计算    18
4.1数据说明    18
4.1.1设计荷载    18
4.1.2桥面铺装荷载    18 源自六/维\论]文[网!加7位QQ324.9114 www.lwfree.cn
4.1.3温度荷载    18 主跨40m预应力混凝土先简支后连续T梁桥设计:http://www.lwfree.cn/gongcheng/20180110/18948.html
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