In accordance with the spirit of documents such as the "Guiding Opinions of the General Office of the State Council on Vigorously Developing Prefabricated Buildings" and the "Application and Promotion Plan of Prefabricated Technology in Shanghai City Transportation Construction", this project adheres to the concept of industrialized fully prefabricated assembly that the Ministry of Construction and the Ministry of Communications has always advocated. For small and medium-span bridges, which account for 80% of the country's total bridges, a complete set of key technologies for the rapid construction of industrialized fully prefabricated bridges with low environmental impact has been developed. Compared with traditional cast-in-place methods, the project research results can shorten the site construction period by more than 50%, reduce traffic impact by more than 60%, and reduce on-site workers by more than 80%. It has high social and environmental benefits and greatly promotes the industrial production and standardization of bridges. Management and information construction play an important role in the development of the industry. The main technical innovations are as follows: 1. Construction and management technology of large-scale modern prefabricated component factories. During the construction of Jiamin Elevated Construction, the prefabricated component factory was planned and constructed. Based on the analysis of the prefabricated component process flow and production capacity requirements, each processing node was systematically optimized and designed, and a 200-ton prefabricated component production process was completed. R & D and assembly line design have greatly improved the production efficiency of components. BIM's information management platform is adopted to make the factory's management efficiency more refined and efficient. The construction of this prefabricated factory has achieved domestic and international advanced factory construction and management technology, and has been replicated all over the country. 2. Industrial prefabrication technology for prefabricated components of bridge piers and columns. In the past, the traditional pier column construction method was cast-in-place, with steel bars binding on site and concrete construction relying on a scaffold platform. This process has shortcomings such as long construction period, impact on traffic, high construction costs, and difficulty in ensuring quality and safety. Through research and innovation on the prefabrication process of large-scale bridge pier column members, the project has formed an industrial production for prefabricated and assembled bridge piers by dry-connected method. It adopts the column prefabrication method with horizontal formwork and vertical pouring and the long-line cap beam prefabrication method of slide rail side formwork system., effectively controls the processing accuracy of steel bars, plusmn;1mm, and the allowable deviation of components in each direction is within plusmn;2mm, and greatly improves the construction efficiency. and further develops the prefabrication technology of decorative concrete pier columns for the industrial production of pier members. It has significant practical significance and promotion value. 3. Rapid installation technology for prefabricated components of bridge piers and columns. Prefabricated bridge pier members are difficult to install due to their large size, heavy weight and high installation accuracy requirements. Through research and innovation on the installation process of large-scale bridge pier and column components, the project invented a number of auxiliary devices and construction methods, and used innovative level, elevation and verticality control devices to accurately position the components in three-dimensional, forming a bridge pier prefabricated component on-site key technology for rapid and accurate installation. 4. Key technologies for rapid construction of bridge pile foundations. In order to solve the problems of low efficiency and poor civilized construction of on-site bored piles, this project innovatively used SQ-10 fully hydraulic submersible drilling rig and developed a steel cage attachment platform, forming a rapid pile-forming construction process. Steel pipe piles are also used to replace bored piles, and a resonance-free hydraulic vibrating hammer positioning guide frame hoisting construction technology has been developed. Both have greatly improved construction efficiency and matched the concepts of fast, green and environmentally friendly prefabricated bridges. The project's research results have resulted in 7 invention patents, 1 software copyright, 8 utility model patents, 9 published papers, 2 municipal construction methods, 1 Shanghai City Engineering Construction Specification was promulgated, 1 Shanghai City Pudong New District Science and Technology Progress Award, and 1 Civil Engineering Science and Technology Award. The search results of the Shanghai Science and Technology Inquiry and Consulting Center of the Chinese Academy of Sciences and expert argumentation believe that the project's research results have generally reached the international advanced level. The project research results have been applied in urban elevated bridge projects such as the North Second Section of Jiamin Viaduct Road and the preliminary implementation section of S3 Highway, and have achieved good social and economic benefits, with a total economic benefits of 35.3 million yuan.