9×30装配式预应力混凝土箱型梁桥.docx

学校代码学 分类号密级本科毕业论文（设计）9×30米装配式预应力混凝土箱型梁桥设计学院、系鄂尔多斯学院土木工程系专业名称土木工程年级 2008 学生姓名韩志东指导教师年月日9×30装配式预应力混凝土箱型梁桥摘要：9×30装配式箱型梁桥设计本着“安全、经济、美观、实用”的八字原则，根据设计任务书的要求和《公桥规》的规定,对Y河大桥进行方案比选和设计的。本论文提出三种不同的桥型方案进行比较和选择：方案一为预应力混凝土连续箱型梁桥，方案二为部分预应力斜拉桥，方案三为上承式混凝土拱桥。经由以上的八字原则以及设计施工等多方面考虑、比较确定预应力混凝土连续箱型梁桥为推荐方案。在设计中，桥梁上部结构的计算着重分析了桥梁在使用工程中恒载以及活载的作用力，采用整体的体积以及自重系数，荷载集度进行恒载内力的计算。运用杠杆原理法、刚接板、梁法求出活载横向分布系数，并运用最大荷载法进行活载的加载。根据所得内力，进行了梁的预应力钢筋估算，估算了钢绞线的各种预应力损失，并进行预应力阶段和使用阶段主梁截面的强度和变形验算、挠度的计算。下部结构采用以钻孔灌注桩为基础的双柱式桥墩，并简要介绍了施工方案。关键词：预应力连续箱梁桥，内力，体系转换，预应力损失，验算，钻孔灌注桩，双柱式桥墩，预应力混凝土9×30 Assembled prestressed concrete box girder bridgeAuthor：hanzhidongTutor：tangbaoliAbstract:9×30prefabricated box beam bridge design in the safe, economy, beautiful, practical eight-character principle, according to the requirements of the design task and the bridge provisions, on the Y River Bridge for scheme selection and design. This paper presents three different bridge type scheme comparison and selection: scheme for the prestressed concrete continuous box girder bridge, scheme for partially prestressed concrete cable-stayed bridge, the scheme three is deck-type concrete arch bridge. Based on the character and the principle of design construction and other aspects to consider, the comparison to determine the prestressed concrete continuous box girder bridge as the recommended scheme.In the design, the bridge upper structure calculation analyzes bridge in use of dead load and live load force, the overall volume and weight coefficient, load collection degree of constant load internal force calculation. Using the lever principle method, modified excentral pressure method for live load transverse distribution coefficient, and the maximum load live load.According to the internal force of the beam, the prestressed steel strand estimation, estimation of loss of prestress, 分享到翻译结果重试抱歉，系统响应超时，请稍后再试支持中英、中日在线互译支持网页翻译，在输入框输入网页地址即可提供一键清空、复制功能、支持双语对照查看，使您体验更加流畅分享到翻译结果重试抱歉，系统响应超时，请稍后再试支持中英、中日在线互译支持网页翻译，在输入框输入网页地址即