The Field Investigation And Study Of Concrete Beam Bridge

With the rapid development of China's economy in recent years, China has made great achievements in the field of bridge engineering construction, but also makes the vehicle traffic and its load increase rapidly. Therefore our country concrete bridges are realized a great leap under this background, but a lot of bridge engineering will appear all man-made damage, vehicle heavy damage and external adverse environmental effects in the design, construction and post operation management, these factors can not only directly weaken the bridge bearing capacity, which will be the main bridge destruction, but also bring a great negative impact for the economic construction of our country. So we now need a perfect, scientific and rational cognition of the disease of bridge engineering, through which we can quickly and effectively deal with the operation of bridge maintenance and reinforcement problems to serve the development of bridge construction in China.The history and present condition of the internal and external research of the disease investigation and rating criterion for the middle and small simple support slab and beam bridge of the reinforced concrete are reviewed in this paper. According to the problems in the present research,the aim and plan of this paper are proposed.Through 1755 diseases of the middle and small simple support slab and beam bridge of the reinforced concrete,based on the present codes and criterion,the conception of the diseases are Presented. In this paper,the diseases are analyzed statistically. Based on the analysis results,the deep-levels mechanism analysis are presented and partial project examples ale enumerated.Finally, the causes of the disease of bridge design stage, stage of construction management and maintenance management stage are systematically analyzed according to the disease conditions. What is more,there is a study from the design method, building materials, construction technology and management means in bridge disease protection field which plays a positive role in improving the use performance of beam bridge, improving bridge design method etc.