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The bridge is an important part of the highway, the safety of the bridge is one of the key issues that we are concerned about. With the rapid development of the construction of China's macro-economic level of industrialization of the society as a whole continued to improve, vehicle load, vehicle speed, traffic volume than before the change, the service level of the road, which also proposed higher requirements. However, since the role and impact of various environmental factors, roads and bridges will be generated during the period in the use range of diseases, such as the deterioration of the concrete material, corrosion, structural cracking and damage, while, with the passage of time, a large number of roads concrete bridge into the disease-prone period, these factors had a greater impact on safety, serviceability and durability of bridge structures, endangering the safe operation of the bridge. This paper uses the basic theory of the concrete structure, detection assessment technology, bridge structure reinforcement design theory, finite element analysis method of the basic theory and methods, even Huo highway Hollow Slab reinforcement works structural cracks damage disease detection, technical condition assessment of disease causes spatial modeling analysis, reinforcement design, construction scheme carried out research work, draw useful conclusions, and provide reference and basis for similar projects. The main research results are summarized as follows: (1) systematically expounded the significance of the research, and domestic and foreign diseases Hollow Slab used reinforcement technology measures are summarized to provide reference and basis for further research work. (2) even Huo highway Hollow Slab its structural crack damage detection, summarized and analyzed. Cumulative scoring method based on the structure of disease status, the technical service status of the bridge structure assessment, and accordingly proposed bridge maintenance recommendations. (3) for the disease hollow Itabashi, by three-dimensional finite element analysis method, the disease causes computational analysis provides a basis for reinforcement design, construction scheme. (4) based on the specific disease characteristics of the hollow Itabashi, program comparison and selection, and determine the overall reinforcement of the bridge structure and given a specific design measures. (5) A summary of the main research, and the prospect of further work.
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