Study On Detection And Strengthening Technology Of Rigid Frame Arch Bridges

China has a vast, mountain horizon, the rivers and lakes. Along with the vigorous development of economic construction, need to greatly strengthen infrastructure construction, the construction of a large number of roads and bridges. The establishment of a modern transportation network extending in all directions, and vigorously develop the transport industry, for the development of national economy, strengthening the unity of the people of all ethnic groups to promote cultural exchanges and consolidating national defense, etc., have a very important role.Along with the development of transport in the past few decades, the state built a large number of bridges, with the use of a bridge, and the recent sharp increase in traffic and the emergence of heavy traffic, have gradually become the old bridge damaged , the original design load levels can not meet the transport needs now is a bridge leading to an important cause of disease occur, bridge materials, the role of aging and environmental damage by the safety of the bridge is already a hidden relationship between the safety of the bridge not only to the national economy, but also related to the security of life effectively. Therefore it is necessary to the health status of the bridge inspection and evaluation. Detected by the bridge can not only bridge the objective understanding of the status of work, the right to assess the load carrying performance, safe operation of the bridge to provide guidance, at the same time as the bridge to provide technical basis for repair and reinforcement.Articles second chapter describes in detail the contents of reinforced concrete bridge inspection, bridge inspection work content are more involved in many aspects. From a methodological speaking, be divided into static load test, dynamic load testing and non-destructive testing; from the time point of view, is divided into short-term trials and long-term tests; to the period from the point of view, is divided into the bridge into the construction phase of testing and monitoring and control. The article also describes in detail the bridge static load-testing and dynamic load-testing, to test the determination of content and the process of testing a detailed introduction to this chapter have introduced a load test that, but also on the bridge doing non-destructive testing technology detail.The third chapter in the article selected for a typical rigid frame arch bridge as an example, detailed on the bridge to do a thorough inspection of work, this detection from two aspects, first conducted a visual inspection of the bridge, right Bridges made a number of disease recording and analysis, and analysis of the causes of disease produced, followed by the bridge load tests carried out, the article on the bridge load tests done a detailed description, according to experimental data, combined with large general-purpose software ANSYS calculation , the bridge carrying the ability to do an assessment.According to Chapter III of the detection and analysis results for bridge defects and load-carrying capacity requirements, has done a reinforcement of the bridge design. This chapter first introduces the bridge reinforcement commonly used methods, and strengthening the principles of the program selected, according to these methods and principles, the bridge was reinforced comparison and selection of the program selected for both economical and effective method of reinforcement. Finally, the article also reinforced the actual bridge construction technology has done a detailed introduction, hoping for future bridge strengthening work can have certain reference value.Finally in the fifth chapter, the right frame arch bridge inspection, as well as summarized the reinforcement and also to know the shortcomings of this article, hoping to study in the future to gradually improve this article.