【作者】 王利阳；

【导师】 陈尚建；

【作者基本信息】 武汉大学 ， 结构工程， 2004， 硕士

【摘要】 水利工程中压力管道是一种应用十分广泛的结构形式。在我国七八十年代建成的电站压力管道，大多采用的是钢筋混凝土圆形结构，在长期运行过程中由于其设计失误、材质恶劣、制作偏差、施工不当、环境因素、功能改变和荷载增加等因素及材质本身的老化、损害等而导致钢筋混凝土压力管道产生各种各样的缺陷、损伤、裂缝过大、承载力不足或结构破坏等问题。在大多数情况下，加固不是唯一的却是最有效和最好的选择。而对于常用加固方法存在不利于实现的缺点，纤维材料不失为上佳的选择。纤维材料加固技术是目前国内外结构物加固、改造领域的一颗璀璨的明珠。但是，其在水利工程的应用却难得一见，该方面的研究著作及论文更是廖若辰星。 本文即对纤维材料加固钢筋混凝土压力管道的性能进行有效的研究探索。本文采用模型试验的形式进行研究，模型考虑两种不同的受力方式，其一为均匀内压模型试验，其二为垂直均布荷载模型试验。在理论方面，本文介绍了钢筋混凝土压力管道的破坏机理及纤维材料加固的粘结机理。同时在利用现行规范的原则模式下，推导出纤维材料加固钢筋混凝土管道的内力表现形式及管道加固设计计算公式。在应用方面，采用了两种不同的纤维材料——碳纤维和玻璃纤维，比较了两种材料在加固过程中产生的不同加固效果，分析了其加固效果不同的影响因素，为工程实际应用提供有效的理论依据及技术支持。更多还原

【Abstract】 Pressure pipeline is a widely used construction form in water project. Ferroconcrete circle form is the main pressure pipelines type mostly adopted in built power stations from 1970’s to 1980’s in our country. During long running process, there are many factors such as design faults, bad materials, manufacturing deficiencies, improper constructions, environment factors, function changed, load increase, material aging, damage and so on which lead to all kinds of problems containing deficiency, crack, lack of strength and structure destroyed .In most conditions , reinforce is not the only but the most effective way and the best choice .For the usual reinforce way isn’t convenient to practice, FRP is considered as a better choice . At present, the technique for FRP reinforce is a bright star in the buildings’ reinforcement and reform fields all over the world but seldom used in water project. The papers about it are even less.This paper is to focused on the capability of pressure pipeline reinforced with FRP. It is based on the adopted model experiment. The model concludes two different ways, one is the internal water pressure model test, the other is upright land pressure model test. In theory, the paper introduces the destroy principles and the conglutination principles of FRP. At the same time, with the current criterion principle model, we can figure out the internal strength expression and pipeline reinforce design formulas. Two different FRP are adopted in practice-CFRP and GFRP, the different FRP in the process of the reinforce are compared with and Its influence factor is analyzed. It provide the effective theory and technique supports for practical projects.更多还原