钢混外倾斜拉桥塔柱施工技术研究

发布时间：2018-05-03 14:11

本文选题：斜拉索 + 混合结合斜塔　；参考：《重庆交通大学》2015年硕士论文

【摘要】：随着各种桥梁技术的快速发展,钢混结合结构在桥梁建设中也被广泛应用,钢混结合结构优点有:适合跨度大、自身抗扭刚度大、材料强度高、减轻结构自重、加工便利、整体性好、外型轻盈美观、施工周期短、对施工区域周围的环境影响较小等优点。与混凝土结构相对比,钢混结合结构桥梁能有效减轻桥梁结构自重。随着国内交通业的发展,钢混结构桥梁在建设实施过程中的推广将得到普遍应用。钢锚箱外包混凝土外倾塔柱在应用过程中较少,本论文结合重庆嘉悦大桥施工实践,主要对钢锚箱加工,施工安装定位控制,塔柱施工工艺、外倾塔柱施工控制以及外倾塔柱模板稳定计算等施工和技术控制,采取理论计算与实际结合的方式,安全简便的实现钢结构与混凝土结构混合斜塔施工,对该体系本文着重介绍了整个混合结构斜塔关键技术和施工工艺,以便类似工程予以借鉴。为明确本工程在施工阶段实际受力情况,采用工程分析软件MIDAS,通过建模计算,分析梁体的各项受力性能以及变形情况,并对结果进行分析,查看是否满足相应要求,以保证工程质量和安全。同时在工程完成后,及时进行桥梁静动载试验,通过测量桥梁在规范中规定的相应动载作用下的应力应变和挠曲变形情况符合规范要求。钢混结构作为桥梁建设中的主要受力结构,其各项技术优势不断被发掘,为桥梁事业的发展开辟了新的发展空间,它的出现让桥梁的建设更靠近了“安全、经济、使用、美观”的目标,我们作为未来桥梁事业的主力军,我们应该充分认识到钢混结构的各项优势,去创造桥梁建设的新成就。本文的研究结果对促进钢锚箱制作与安装技术的理论完善化、实践普遍化,同时可为今后同样形式桥梁的施工积累经验,丰富桥梁施工的方式。
[Abstract]:With the rapid development of various bridge technology, steel-concrete composite structure is also widely used in bridge construction. The advantages of steel-concrete composite structure are: suitable for large span, large torsional stiffness, high material strength, reduced structural weight, easy processing. It has the advantages of good integrity, light appearance, short construction period and less influence on the surrounding environment of the construction area. Compared with concrete structure, steel-concrete composite bridge can effectively reduce the weight of bridge structure. With the development of domestic transportation industry, the promotion of steel-concrete structure bridges in the process of construction and implementation will be widely used. The external concrete tilting tower column of steel anchor box is less in the application process. This paper combines the construction practice of Chongqing Jiayue Bridge, mainly processes the steel anchor box, the construction installation position control, the tower column construction technology, The construction and technical control of external tilting column construction control and external tilting column formwork stability calculation are adopted to realize the construction of mixed inclined tower of steel structure and concrete structure safely and easily by combining theoretical calculation with practice. This paper mainly introduces the key technology and construction technology of the mixed structure inclined tower, so that similar engineering can be used for reference. In order to make clear the actual force situation of the project in the construction stage, adopt the engineering analysis software midas, through modeling and calculation, analyze the various mechanical properties and deformation of the beam body, and analyze the result, see whether meet the corresponding requirements. To ensure the quality and safety of the project. At the same time, after the completion of the project, the bridge static and dynamic load tests were carried out in time, and the stress, strain and flexural deformation of the bridge under the corresponding dynamic loads specified in the code were measured according to the requirements of the code. As the main force structure in bridge construction, steel-concrete structure has been excavated continuously, which has opened up a new development space for the development of bridge, and its appearance has brought the bridge construction closer to "safety, economy and use." As the main force of bridge construction in the future, we should fully recognize the advantages of steel-concrete structure and create new achievements in bridge construction. The results of this paper can promote the perfection of theory and practice of steel anchor box making and installation technology, at the same time, it can accumulate experience for the same form of bridge construction in the future and enrich the way of bridge construction.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.4;U448.27

【参考文献】