摘要
本设计介绍了拱桥的历史、现状以及今后的发展趋势,简要给出了大跨拱桥的施工方法,以科学的方法并结合一些成功的工程实例,详细介绍了缆索吊结合支架完成拱肋安装的施工方法,并重点描述了这种方法施工过程中的难点和要点。
设计主要分为6章,第1章为绪论,概括地介绍了大跨度拱桥的发展状况、结构特点和施工方法;第2章确定了跨度为137m的钢管混凝土拱桥的施工方案;第3章内容是缆索吊装系统设计计算,是本设计的重点内容;第4、5章分别介绍锚碇系统设计和塔架系统设计,是对缆索吊装系统附属结构的设计,也很重要;第6章是详细施工工艺的阐述,也是本设计的又一重点内容,也是现实施工过程中应该主要控制的部分。
关键词:大跨度拱桥 缆索吊装系统 支架
Abstract
The design presented the history ,current situation and future trends of the arch , gives a brief span arch bridge construction methods, combined with the scientific method and examples of successful projects, details of the cable crane installation combined with support to complete rib construction methods, and focus on the method described in the difficult construction process and the key points.
Design is divided into six chapters, chapter 1 is introduction, overview of the development of long-span arch bridge, structural features and construction methods; Chapter 2 identified the span of 137m of steel arch bridge construction program; Chapter 3 is the cable crane system design and calculation, the key elements of this design; Chapter 4and5 introduced respectively tower anchorage system design and system design, is a subsidiary structure of cable crane system design, is also important; in Chapter 6 is a detailed description of the construction process is another key point of this design ,is the process of actual construction should be the main control part.
Keywords: long span arch bridge cable crane system support system