城市桥梁(下承式钢管混凝土系杆拱桥)设计(含CAD图)
城市桥梁(下承式钢管混凝土系杆拱桥)设计(含CAD图)(任务书,开题报告,外文翻译,计算说明书13800字,CAD图7张)
摘要
本次要完成的设计是随州市一桥的改造工程,根据沿线自然地理概况,包括地形地貌,河流和水文地质概况,以及工程沿线道路现状,结合相关的规范,采用了下承式钢管混凝土系杆拱桥,跨径为188米。本文首先介绍了桥形的方案比选,选择的三个方案分别为跨度为268米的单塔双索面斜拉桥,跨度为260米的多跨连续刚构桥和主跨为188米的下承式钢管混凝土系杆拱桥,然后通过经济,技术,安全,环保和美观方面最终考虑了下承式钢管混凝土系杆拱桥。之后对所选桥形的细节尺寸和布置方法进行了设计,并通过Midas/Civil对主桥的上部结构进行了内力分析,配置了适应的预应力钢筋,然后对强度和应力进行验算,最后分析了施工方法,其中主拱使用缆索吊装施工法,主梁使用满堂支架法,引桥使用顶推法。另外,在此次设计中,我严格遵守了类似于《钢管混凝土拱桥设计规范》等一系列桥梁设计规范,希望能够知行合一,更好的完成这次设计。
关键词:下承式;钢管混凝土;系杆拱桥;预应力
ABSTRACT
The design of the secondary is the completion of the renovation project of Suizhou city cross water bridge,According to the natural geographical survey along the line, including topography, geomorphology, river and hydrogeological profiles, and the status of the road along the project, combined with the relevant specifications, I use a through concrete-filled steel tube tied arch bridge.The span is 188 meters.This paper first introduces the scheme selection of bridge shape, three options were a span of 268 meters of single tower and double cable plane cable-stayed bridge with a span of 260 meters of the multi span continuous rigid frame bridge and the main span is 188 meters under supported CFST Arch Bridge,Then, through the economic, technical, safety, environmental protection and aesthetic aspects, the concrete-filled steel tube tied arch bridge is finally considered.After the selected bridge details of the size and layout methods were designed, and the internal force analysis of main bridge superstructure by Midas/Civil, the configuration of the prestressed reinforcement of adaptation, and checking of the strength and stress, the final analysis of the construction method, the use of cable hoisting construction method of main arch of the main girder using full support method, using push method approach.In addition, in this design, I strictly abide by the "similar to the CFST arch bridge design specifications" and a series of bridge design code, hope to be able to practice, the design is completed better. [资料来源:http://Doc163.com]
Key words:through bridge;concrete filled steel tube;Tied arch bridge;prestress
1.1 桥梁主要的技术标准
(1)道路等级:城市主干路;
(2)设计速度:40km/h;
(3)桥梁荷载等级:汽车荷载:城-A级,人群荷载:4KN/M2 ;
(4)桥宽:2米人行道+2米非机动车道+0,。5米护栏+6.75米行车道+0.5米黄线+6.75米行车道+0.5米护栏+2米非机动车道+2米人行道
(5)设计洪水频率:1/100,对应设计水位为64.75米;
(6)桥下河流无通航要求;
(7)桥梁设计安全等级:一级,结构重要性系数γo=1.1;
(8)桥梁设计基准期为100年;
(9)桥梁设计使用年限为100年;
(10)环境类别:Ⅰ类 ;
目录
前言 2
1 设计背景和资料 6
1.1 桥梁主要的技术标准 6
1.2 地形地貌 6
1.3气候条件 6
1.4河流概况 7
1.4 设计规范 7
1.5 说明 7
2 桥梁方案比选 8
2.1设计方案说明 8
2.2 方案比选 8
3 桥跨结构尺寸介绍 12
3.1 桥形和孔径 12
3.2 截面尺寸拟定 12
4 桥梁结构电算分析 13
4.1计算基本背景 13
4.2 使用Midas进行桥梁的建模和计算 14
4.3 采用Midas进行计算 14
[资料来源:http://www.doc163.com]
4.4 各个截面的内力计算 15
4.5 横梁预应力钢筋的布置 17
4.6 系杆预应力筋的配置 18
4.7 拱肋强度验算 18
6 钢管混凝土拱桥的缆索吊装施工方法 19
6.1 缆索吊装施工法的特点 20
6.2 钢管的制作和施工简介 20
6.3 主拱的吊装施工 20
6.4 钢管内泵送混凝土的施工方法 21
6.5 其他部分的施工方法 21
结束语 22
致 谢 23
参 考 文 献 23 [资料来源:www.doc163.com]
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