肇庆西江大桥裂缝成因及对策分析

发布时间：2018-03-24 21:35

本文选题：混凝土公路桥　切入点：裂缝　出处：《湖北工业大学》2017年硕士论文

【摘要】：肇庆西江大桥于2003年9月8日,在原来旧的公铁两用桥东边一侧新建混凝土公路桥,新桥在使用过程中桥面出现了很多条大小不一的裂缝,笔者在这个情况下撰写了这篇论文。自改革开放以来,中国借着这股春风,在各个领域都得到了快速发展,当然交通领域也不例外。在此期间我国修建了很多混凝土桥梁,这些混凝土桥梁经过几十年的工作,有些毛病就开始暴露出来了,像在桥梁的混凝土表面出现掉块、裂缝、掉皮、空洞等等。桥梁专家们从多反面入手开始想办法抢修这些对结构没有太大伤害的桥梁,如从材料方面,特别是混凝土材料的各种性能上来改进,从施工方法上来保证桥梁的正常完成。对于桥梁裂缝的研究,不管是国外还是国内,桥梁专家都已经做了很多的努力,也有了很不错的成果,而且这些成果也用在了工程实践中了,实践也证明了这些方法切实可行。本论文在讨论桥梁裂缝方面是先从裂缝产出的机理入门,然后逐层分析,找出最多最大的原因,再从这个原因开始,简介切实可行的修补方法。对于本工程,现场专家有采取了那些好的施工办法。最后,本文还对混凝土桥梁裂缝的种类和产生的原因作了较全面的分析、总结,为以后的施工找出控制裂缝的可行办法,达到防范于未然的作用。
[Abstract]:On September 8, 2003, a new concrete highway bridge was built on the east side of the old bridge. Many cracks of various sizes appeared on the deck of the new bridge. In this case, the author wrote this paper. Since the reform and opening up, China has developed rapidly in all fields, of course in the field of transportation. During this period, China has built a lot of concrete bridges. After decades of work on these concrete bridges, some defects began to be exposed, such as falling blocks, cracks, and skins on the concrete surface of the bridges. And so on. Bridge experts start by looking at ways to repair bridges that don't do much damage to structures, such as improving the material, especially the properties of concrete materials. In terms of construction methods to ensure the normal completion of the bridge. For bridge crack research, both at home and abroad, bridge experts have made a lot of efforts, and have also achieved very good results. These results have also been used in engineering practice, and the practice has proved that these methods are feasible. In discussing the bridge cracks, this paper first introduces the mechanism of crack production, and then analyzes them layer by layer to find out the most important reasons. Starting from this reason, the paper briefly introduces the feasible mending methods. For this project, some good construction methods have been adopted by experts on the spot. Finally, this paper also makes a more comprehensive analysis of the types and causes of cracks in concrete bridges. In conclusion, we can find out the feasible method to control the crack in the future construction, and achieve the preventive effect.
【学位授予单位】：湖北工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U445.71

【参考文献】