Research On The Durability Of Existing Concrete Structures In Qingdao Area

Reinforced concrete structure is one of the most popular and widely used structural forms at present. However, the phenomenon they are damaged ahead of time arises in most concrete structure. On the one hand, some lack structural resistance; what is worse, the durability of other concrete structure is inadequate.Especially for the coastal areas, more attention should be paid to the durability of concrete structure due to different environment. It has important economic and practical significance to analyze and evaluate the durability of existing reinforced concrete structures.The main studies of this paper are as follows: Because of the randomness and complexity for the durability of the structure and on the basis of analyzing and summarizing the basic theory of durability of concrete structure, combing the influence of natural climate environment, the problems of design and construction on the durability of Qingdao area is investigated and studied. The corresponding improvement measures are put forward for the deficiency of the testing methods used in the durability test. Taking the existing concrete structure engineering in Qingdao area as the research object, the statistical analysis of the data of a large number of components in the engineering example were carried out. The content of the study compare the carbonation depth of different age structures, explore the relationship between carbonation depth and age, and put forward the calculation formula of concrete carbonation depth in coastal area of Qingdao based on the actual test data. Using the analytic hierarchy process, the durability of the structure is assessed through the classification of the data, combined with quantitative and qualitative analysis, and the corresponding solutions to the components that need to be strengthened are put forward.