吉林市雾凇大桥关键施工技术研究

发布时间：2018-03-04 07:18

本文选题：自锚式悬索桥　切入点：施工方法　出处：《哈尔滨工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：桥梁的建设不仅要依靠成功的结构设计,还要依靠合理的施工过程,只有合理适用的施工方法及技术才能使人力、物力的利用取得最大的经济和社会效益,同时最大程度满足桥梁设计的基本原则“适用、经济、安全、美观”,尤其是安全、经济和施工过程的合理度有着密切的关系。桥梁的安全关系到人民的生命财产安全,这对桥梁的质量有着很高的要求,所以要求施工单位做好各项施工的组织和设计。良好的施工方法必须全面考虑安全、成本、进度、工艺、质量监督等方面因素。通过合理的施工方法协调好工期、质量和成本,保证人员安全、降低工程成本、提高工程效益、预定进度的实现、工艺的先进、质量达到各项技术指标。施工方法及工艺技术是施工过程中的主要指导依据,而自锚式悬索桥结构体系复杂,施工难度大,技术复杂,保证工程质量和施工安全必须依靠合理的施工技术。自锚式悬索桥独特的受力特点使它具有特殊的施工方法。本文通过对吉林市雾凇大桥上部结构和下部结构进行施工方案设计,为雾凇大桥的建设起到指导作用。针对工程的特点,考虑成本、进度、施工质量、施工安全问题,从施工方案、整体规划入手,满足各项指标要求,完成雾凇大桥的施工技术研究。对施工全程的关键技术进行了详细地分析讨论。包括:(1)材料的选择,主要施工步骤的制定;(2)塔柱施工关键技术研究与设计,以关键施工工序为基础,全面考虑施工过程中所有细节,完成了钢筋工程、混凝土工程的施工设计,以及施工过程中大体积混凝土的温控措施,施工工艺的完整设计;(3)混凝土箱梁的施工设计,包括支架施工、主梁高度预拱度、主梁纵桥向预偏量、支架基础施工的整体设计,支架结构设计,以及支架体系受力验算、模板验算、基础承载能力验算;(4)通过对雾凇大桥悬吊体系施工技术开展研究,确定了主索鞍和散索套预偏量、猫道线形、主缆长度和索股位置、索夹安装位置和吊杆无应力长度、吊杆的张拉顺序及张拉力大小、主索鞍顶推值。
[Abstract]:The construction of the bridge structure design should not only rely on the success of the construction process, we must rely on the reasonable construction method, only suitable to make human and technology, to achieve maximum economic and social benefits by force, while the maximum extent to meet the basic principles of bridge design "applicable, economic, safe, beautiful, especially the safety the economy, and the construction process of reasonable degree has a close relationship. The bridge safety is related to people's life and property safety, the quality of the bridge has a very high demand, so the construction units do require the construction organization design and construction methods. The good must fully consider the safety, cost, schedule, process quality supervision, and other factors. Through the reasonable construction method to coordinate the schedule, quality and cost, to ensure the safety of personnel, reduce project cost, improve project efficiency, realize the predetermined schedule, process The advanced quality, meet the technical specifications. The construction method and technology is the main basis in the construction process, and structural system of self anchored suspension bridge is complex, difficult construction, complex technology, ensure the engineering quality and construction safety must rely on reasonable construction technology. The stress characteristics of self anchored suspension bridge which is unique special construction method. In this paper, through the design and construction scheme of Jilin Wusong bridge superstructure and substructure, construction of rime bridge plays a guiding role. According to the characteristics of the project, considering the cost, schedule, construction quality, safety problems of construction, from the construction plan, the overall planning of the indicators meet the requirements of construction complete the rime bridge. The key technology of the construction process were discussed in detail. Including: (1) the choice of materials, the main construction procedure; (2) Ta Zhushi Research and design of key technology, the key construction process based on comprehensive consideration of all the details of the construction process, the reinforced concrete engineering project, construction design, temperature control measures of mass concrete in the construction process and construction technology, complete design; (3) the design and construction of concrete box girder, which comprises a bracket construction. Height of girder camber of girder, longitudinal pre displacement, the overall design of bracket base construction, structure design and system support bracket, stress checking, template checking, checking computation of bearing capacity of foundation; (4) through the research on the construction technology of suspension system to determine the rime bridge, main cable saddles and splay pre offset, cat road alignment, length of main cable and cable, cable clamp installation position and suspender length without stress, suspender tension order and tensile force, the value of the main cable saddle pushing.

【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U445.4

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