苏州西环南延工程跨绕城高速主线桥悬浇施工方案设计

发布时间：2018-05-23 10:11

本文选题：高速公路 + 连续箱梁跨线桥　；参考：《苏州科技大学》2017年硕士论文

【摘要】：随着社会主义经济建设的发展,基础设施建设突飞猛进。桥梁建设是基础设施建设一个重要组成部分,随着越来越多大型桥梁的建设,连续梁悬臂浇筑法自从上世纪60年代由前西德首先使用以来,因其自身灵活性好,适应性强,不需要大量的施工支架和临时设备,不影响桥下通航、通车,施工不受季节、水位的影响,已成为修建大中跨径桥梁的一种有效施工手段。本文主要论述了连续梁悬臂浇筑施工关键环节技术控制,主要包括0号块施工、挂篮拼装、边跨、中跨合拢段等环节的施工控制要点、施工监控的主要内容及监控手段等。0号块及合拢段的施工是悬浇施工最为关键的环节,0号块施工应严格控制好地基处理和支架搭设质量,确保支架的稳定和安全。挂篮形式的选择及其走行方式需要在认真比选的基础上进行,在悬浇施工中确保挂篮稳定。同时合拢节段长度、吊架的设置、水箱压重、合拢气温的选择等应该合理控制好。同时以苏州市西环高架南延跨绕城高速主线桥悬浇施工为例,重点阐述了本悬浇桥梁施工工艺的控制、监控方法的介绍及其基本控制手段,确保悬浇施工中结构内力、桥梁线形、高程等满足设计要求,突出了本项目的重点与难点。另外,通过对该项目在施工过程中的一些交通导改原则及措施揭示了如何在不中段高速公路正常运营的前提下,合理安排施工顺序,合理设置各类交通安全设施,使交通导改满足于悬浇施工的推进,为今后类似工程项目提供一定的借鉴意义。
[Abstract]:With the development of socialist economic construction, infrastructure construction is advancing by leaps and bounds. Bridge construction is an important part of infrastructure construction. With the construction of more and more large bridges, the cantilever casting method of continuous beam has been used first by the former West Germany since the 1960s, because of its good flexibility and adaptability. It does not need a large number of construction support and temporary equipment, does not affect the navigation under the bridge, open to traffic, construction is not affected by the season, water level, has become an effective construction means to build large and medium span bridges. This paper mainly discusses the technical control of the key links in the cantilever pouring construction of continuous beam, including the construction of block 0, the assembling of hanging basket, the side span, the closing section of middle span, and so on. The construction of No. 0 block and closing section is the most important link in the construction of suspension casting. The construction of No. 0 block should strictly control the quality of foundation treatment and support erection to ensure the stability and safety of the support. The choice of hanging basket form and its walking mode should be carried out on the basis of careful comparison and selection, and ensure the stability of hanging basket in the construction of hanging casting. At the same time, the length of closing segment, the setting of hanger, the weight of water tank and the selection of closing temperature should be controlled reasonably. At the same time, taking the construction of the high speed main line bridge with the south extension span of the west ring viaduct in Suzhou as an example, the paper emphatically expounds the construction technology control, the introduction of the monitoring method and the basic control means, so as to ensure the internal force of the structure in the construction of the suspension casting. Bridge alignment and elevation meet the design requirements and highlight the key and difficult points of the project. In addition, through some traffic guiding principles and measures in the construction process of the project, this paper reveals how to arrange the construction sequence reasonably and set up all kinds of traffic safety facilities reasonably under the premise of the normal operation of the non-middle section expressway. The improvement of traffic guide is satisfied with the advance of suspended pouring construction, which provides some reference for similar projects in the future.
【学位授予单位】：苏州科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U445.4

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