The Diseases Analysis And Maintance And Strengthening Of Reinforced Concrete Bridge

From the material and structure aspects, the reinforced concrete bridge diseases and the corresponding causes are studied in this thesis. At the same time, the prevention and control methods for avoiding the concrete bridge deterioration are also put forward. And then the bridge diseases are classified according to the harm degree based on the previous classification, which giving people a more perceptual cognition on the degree of disease and providing quantitative basis for evaluation of the ranking of bridge condition. The following aspects are carried out:Chapter 1 addresses the current situation of bridge disease both at home and abroad and the concept of disease and harm degree. This chapter also introduces the research targets and research contents of this thesis.Chapter 2 presents the causes of disease of concrete material and proposes the prevention and control methods. Moreover, this chapter also gives a classification of the disease according to the harm degree based on the grading of the concrete destruction.Chapter 3 presents the mechanism of reinforcing steel corrosion, and reports the prevention and control methods. This chapter also gives a classification of the disease according to the harm degree based on the grading of the corrosion of steel.Chapter 4 presents the deformation and displacement of structure and elements. And then summarizes the causes of disease of concrete structure, at the same time, offers the prevention and control method. this chapter also gives a classification of the disease according to the harm degree based on the grading of the deformation and displacement of structure and elements.Chapter 5 presents the main diseases of bridge subsidiary facilities, and investigates the causes of disease of bridge subsidiary facilities; meanwhile, puts forward the prevention and control method.Chapter 6 presents the diseases of Xiang Lu Jiao overpass, and then provides the methods of maintance and strengthing.The conclusions are drawn based on the above chapters.