桥梁工程泡沫塑料永久性内模技术应用研究

发布时间：2018-06-25 22:34

本文选题：桥梁工程 + 泡沫塑料　；参考：《西安建筑科技大学》2015年硕士论文

【摘要】：随着我国道路的交通量和荷载重量日益增加,相应用于交通的使用空间日益减少,桥梁设计向着大空间、大跨度的结构形式发展,空心式桥梁就是其中一种广泛应用的设计。经过多年的工程实践,发现由于桥梁内模施工技术的局限性,造成了桥梁的整体性不足、耐久度低、混凝土结构厚度不足和钢筋保护层不足等问题。为了解决这类问题,有部分桥梁工程借鉴房建工程中永久性模板的成功经验,将永久性模板引入到桥梁工程的施工中去,并进行了多种尝试,如木制永久性内模、橡胶囊永久性内模、PVC管永久性内模、混凝土薄壁芯管永久性内模等。本文调查报道了目前桥梁工程永久性内模技术的发展和现状,通过对比传统施工工艺,对泡沫塑料永久性内模应用到桥梁工程的可行性和相关问题进行了研究;运用文献资料法和试验法对泡沫塑料内模的设计、制作与工程施工技术进行了研究;经过在工程实例中的应用,验证了该技术理论的正确性,达到了预期的目的。该技术通过工程实践经验总结,形成省级工法,并获评全国市政工程科学技术奖。该研究成果为桥梁工程内模施工提供了新的解决方案,为今后同类型的桥梁工程内模施工提供了可借鉴的经验,为桥梁工程永久性内模的发展提供了一个新的方向。
[Abstract]:With the increasing traffic volume and load weight of roads in our country, the corresponding space for transportation is decreasing day by day. The design of bridges is developing towards the structural form of large space and long span. The hollow bridge is one of the widely used designs. After many years of engineering practice, it is found that due to the limitation of bridge internal formwork construction technology, the bridge is short of integrity, low durability, insufficient thickness of concrete structure and insufficient protective layer of steel bar, etc. In order to solve this kind of problem, some bridge engineering draw lessons from the successful experience of the permanent formwork in the house construction project, introduce the permanent formwork into the construction of the bridge engineering, and carry on many kinds of attempts, such as the wooden permanent internal mold, Rubber bag permanent internal model PVC pipe permanent internal model, concrete thin-walled core pipe permanent internal model. In this paper, the development and present situation of permanent internal model technology in bridge engineering are investigated and reported, and the feasibility and related problems of the application of foam plastic permanent internal mold in bridge engineering are studied by comparing with the traditional construction technology. The design, manufacture and engineering construction technology of foamed plastic internal mold were studied by using the method of literature and experiment, and the correctness of the technology theory was verified by the application in engineering example, and the expected purpose was achieved. Based on the experience of engineering practice, the technology forms provincial engineering method, and is awarded the national municipal engineering science and technology award. The research results provide a new solution for the internal model construction of bridge engineering, and provide a new direction for the development of the permanent internal model of the bridge engineering, which can be used for reference for the same type of bridge engineering internal model construction in the future.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.57

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