连续梁桥施工临时结构设计

摘  要
 挂篮作为悬臂灌筑施工的主要设备已有许多类型，有些国家如日本、法国等已有定型的系列化产品。我国从上世纪80年代开始使用这种技术以来，也已取得了巨大的成就。随着我国现代化进程的加快，基础设施的建设飞速发展。高速公路、桥梁、隧道等基础设施规模在不断向大型化、大跨度方向发展。目前大型、大跨度桥梁的施工广泛采用环境适应性强的悬臂浇筑法。挂篮设备是进行悬臂浇筑施工时必不可少的施工机具，其中菱形挂篮设备在大型桥梁施工中得到广泛应用。我国的挂篮设计制作已全部适应悬臂施工的高强、轻型、大跨发展的需要，从PC连续梁或钢构的悬臂施工挂篮最初是平行桁架式，后来逐渐发展为多样化，结构越来越轻型，受力越来越合理，施工越来越方便，应用也越来越广泛。
 本设计采用菱形挂篮，重点了解挂篮的构造、设计方法及主要的分析计算步骤。其次，本设计主要是应用MIDAS/Civil及OutCAD对挂篮进行设计，需学习掌握MIDAS/Civil及OutCAD。
 挂篮是悬臂施工的关键设备，挂篮的主要功能是支撑模板，承受新浇混凝土重量。挂篮通常都由以下几个部分组成：承重系统、悬吊系统、模板系统、锚固装置、走行系统和工作平台。
 挂篮的内模、外模、底模及主桁架计算是挂篮设计的主要组成部分，本文进行讲解。从挂篮的受力计算开始分析，通过强度验算、挠度检算设计出最合适的挂篮截面尺寸，来满足挂篮设计所要达到的要求。本设计中还有很多不足之处，望能提出宝贵意见，特此感谢。
关键词：模板 主桁架  悬臂施工

Abstract
 Basket as cantilever construction of major equipment, there are many types, some countries such as Japan and France have finalized a series of products. 80 years from the last century, China began using this technique has also made great achievements. Highways, bridges, tunnels and other infrastructure continue to scale in large, long-span direction. At present large-scale, long-span bridge construction widely used in environmental adaptability of the cantilever casting method. Hanging Cantilever construction equipment is carried out when necessary construction machinery, including a large diamond-shaped hanging basket device widely used in bridge construction. Hanging Basket Design China have all been adapted cantilever construction of high-strength, lightweight, long-span development, from a PC or a steel cantilever beam was initially parallel to the truss construction Hanging type, then gradually developed into a diversified structure increasingly The more light, more and more reasonable force, the construction more convenient, more and more widely applied.
 This design uses Lozenge hanging basket, introduced the triangular cradle design principles, triangular cradle design, construction methods and the main calculation steps, described cantilever construction technique. The process of mapping and calculating the main use of MIDAS / Civil and OutCAD engineering software
 Hanging is the cantilever construction of key equipment, Cradle main function is to support the template, to bear the weight of fresh concrete. Hanging usually by the following components: load-bearing system, suspension system, template system, anchoring devices, running the system and working platform
 Hangs basket's cast, the outline templet, the bottom die and the principal truss computation is hangs the basket design the key component, this article carries on the explanation. From hangs basket's stress computation to start to analyze, through the intensity checking calculation, the amount of deflection examines calculated that designs appropriately hangs the basket section size, hangs the request which satisfiedly the basket design must achieve. In this design also has many deficiencies, looks can propose the valued suggestion, thanks specially.
Key word: Template  Principal truss  Bracket construction

目  录
第1章 绪论 1
 1.1挂篮悬臂施工在国内、外发展现状 1
 1.2 挂篮施工的工艺特点法 1
 1.2.1挂篮设计 2
 1.2.2挂篮制作 2
 1.2.3挂篮安装 3
 1.2.4挂篮走行 3
 1.2.5挂篮拆除 3
第2章 工程概况 4
 2.1基本简介 4
 2.2工程内容 4
 2.3工程项目 5
 2.4沪宁城际铁路大桥桥体主要技术参数 5
第3章 模板设计 6
 3.1侧模计算 6
 3.1.1侧压力计算 6
 3.1.2 面板计算 6
 3.1.3加劲肋计算 8
 3.2 底模计算 9
 3.2.1斜立侧底模计算 9
 3.2.2梁底模板计算 10
 3..3翼缘板计算 10
 3.4顶板计算 11
 3.5内模计算 11
 3.5.1内模所受重力计算 11
 3.5.2走行梁验算 12
 3.5.3吊梁验算 12
 3.6外侧模桁架检算 13
第4章 主桁架计算 15
 4.1主横梁的计算 15
 4.2 主桁架计算 16
 4.3 杆件连接处螺栓的确定 18
 4.4 作用在主横梁上的吊带计算 20
第5章 结束语 21
参考文献 22
致  谢 23
附  录 24