湘潭湘江二大桥北引桥预应力空心板梁病害分析及加固研究

发布时间：2018-06-29 09:17

本文选题：湘潭湘江二大桥 + 预应力空心板梁　；参考：《湖南科技大学》2015年硕士论文

【摘要】：湘潭湘江二大桥从建成至今已逾20余年。因运营多年,其北引桥16m预应力空心板梁部分顶板以及腹板损害严重。因此深入的对其进行病害分析,并在此基础上进行加固方案研究,不仅能修复甚至提高该桥梁的承载能力以及运营能力,也能延长该桥梁的使用寿命,以使其更加适合日益增长的交通需求。本文以湘潭湘江二大桥北引桥预应力空心板梁为研究背景,进行了以下几个方面的研究。1)针对湘潭湘江二大桥北引桥中出现的“顶板穿孔”和“腹板压馈”病害进行了理论验算,并分析了其产生的原因;2)采用桥面补强层加固法,针对湘潭湘江二大桥北引桥预应力空心板梁“顶板穿孔”以及“腹板压馈”两种病害,进行了加固方案的设计。3)采用有限元软件,对加固过程中拆除顶板(顶板或腹板)的安全性进行了评估。
[Abstract]:Xiangtan Xiangjiang second Bridge has been built for more than 20 years. For many years of operation, some roof and web plate of 16m prestressed hollow slab beam of north approach bridge are damaged seriously. Therefore, it can not only repair and even improve the bearing capacity and operation capacity of the bridge, but also prolong the service life of the bridge. In order to make it more suitable for the growing traffic demand. The background of this paper is the prestressed hollow slab beam of the North approach Bridge of Xiangtan Xiangjiang River Bridge. This paper has carried on the following research in several aspects. 1) in view of the "roof perforation" and "web pressure feed" diseases occurring in the north approach bridge of Xiangtan Xiangjiang second Bridge, the theoretical checking calculation has been carried out, and the reasons for its occurrence are analyzed. 2) the bridge deck reinforcement method is adopted. In view of the two diseases of "roof perforation" and "web pressure feed" of the prestressed hollow slab beam of the North approach Bridge of Xiangtan Xiangjiang second Bridge, the design of reinforcement scheme (.3) is carried out using finite element software. The safety of removing roof (roof or web) during reinforcement is evaluated.
【学位授予单位】：湖南科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U445.7

【相似文献】