Quality Control Of Hydraulic Structures Expansion Joint

With the development of the urbanization and industrialization, the demand for water is increasing gradually. On the one hand, waterworks shall be built more to satisfy the demand of town-water, and on the other hand, the discharge of industrial wastewater and sewage is an important issue that should be solved for urban development. Because of the increasing discharge of industrial wastewater and sewage and the backwardness of sewage collection pipe network and sewage treatment plants, the pollution of water resources is grave. According to action plan of Tianjin, the industrial wastewater has to be concentrated and treated and the Socio-economic sustainable development of Tianjin City.During the construction of the waterworks and water treatment plants, the quality of essential indemnification of operation of waterworks and water treatment plants. However, in the construction process of large Hydraulic Structures, the construction of Expansion Joint is a relative weakness. The events of leakage are occurred from time to time because of the quality issue of Expansion Joint.This thesis, first, expounds the background, significance, and research idea and research method of the, and from design and construction point of view to analyze the quality control of Expansion Joint and then find out the existed issues.Then, this thesis analyzes the quality factors of Expansion Joint in Hydraulic Structures with construction process. Simultaneously, this thesis analyzes five quality factors of Expansion Joint from design section and construction section points of view such as human, material, equipment, construction method and environment, and find out the key point of quality control.Finally, with the practical instances of wastewater treatment plant, this thesis will make the theory apply to the practice of project, and improve the quality control of construction of Biochemical Pool Expansion Joint and the Expansion Joint in Hydraulic Structures.