This project belongs to the field of civil construction engineering construction technology. With the continuous development of architectural technology, modern sports venues are not only huge in size, but also have diverse functions, diverse buildings, unique shapes, distinctive personalities, and complex structural systems. In terms of construction technology, there are often common technical problems related to large-scale underground projects, large spatial structures, complex pipeline systems, etc. The Shanghai Oriental Sports Center was built for the 14th FINA World Championships in 2011. In order to meet the technical requirements of building an "ecological space", it has essential breakthroughs in terms of construction scale, spatial layout, composition form and implementation method. It is the only project under construction around the park during the Shanghai World Expo. Supported by projects such as scientific and technological research projects of the Shanghai City Science and Technology Commission, this project focuses on project construction, is oriented by project needs, and aims at resource integration. It carries out multi-disciplinary, multi-professional and multi-level research on industry-university-research, and has formed the following scientific and technological innovation achievements: 1. Construction efficiency and environmental protection technology for large-area, large-volume, large-drop deep foundation pit projects: Based on the in-situ protection requirements of ancient ginkgo trees, the "Ancient and Famous Trees Protective Groundwater Controllable Soft Wall Construction Method" was innovatively developed, and comprehensive application The gravity dam is internally nested bored piles combined with island-style block-spaced skipping excavation and other technologies achieve a high degree of unity between construction efficiency and environmental protection. 2. Crack control technology for underground concrete structures based on durability requirements: Based on the early performance analysis of concrete structures, technologies such as structural construction crack control and improvement of boundary constraints matching foundation pit excavation are innovatively used to achieve rapid construction of large-scale concrete underground structures. Seamless construction. A new type of self-compacting concrete with more than 150 anti-freezing cycles and a minimum and maximum temperature of-18 ℃ and 35℃ has been innovatively developed, solving the comprehensive performance problems of concrete such as slump retention, self-compaction, anti-freezing and penetration. 3. Construction technology of large-space concrete structures: Through the arrangement of steel bars and optimization of construction technology, the construction problem of rigid concrete giant columns is solved; a construction method to improve the effective prestress degree of large-span prestressed concrete structures under complex constraints is proposed and formed. 4. Construction technology of giant double hinged portal arch steel truss structure: A support platform for segmented hoisting of large-span shaped triangular trusses that can realize safe and rapid unloading has been developed. It combines overall support and "segmented installation on both sides, assembly within the middle span, and overall lifting" The installation process ensures the stability of the 151-meter-span giant double hinged portal arch steel truss structure during the installation process. 5. Special welding machine technology for short spool-flange and pipe-fitting: An automatic welding machine suitable for centralized prefabrication of pipes in machine rooms on the construction site has been developed, and two MIG/MAG welding processes have been innovatively used to solve the problem of welding flange fillet welds in civil machine rooms. problem. The project has been authorized for 1 invention patent, 6 utility model patents, and applied for 5 invention patents; published 11 papers; formed 1 industry standard; and 1 municipal construction method. The overall technology has reached the international advanced level. Among them, the overall support technology with both vertical and lateral rigidity and the construction technology of complex concrete structures with a long span of 41 meters are at the international leading level. The project's research results have not only been successfully applied to the Shanghai Oriental Sports Center project, but have also been further applied in the construction of Shenfu New City's "Ring of Life", the China Expo Convention and Exhibition Complex, and the Tianjin Beiyang Garden Education Base Sports Center. In the past three years, the cumulative new output value has been nearly 1 billion yuan, new profits have been 48.1 million yuan, new taxes have been 34.52 million yuan, and project cost has been saved by 28.01 million yuan. The successful construction of the Shanghai Oriental Sports Center once again demonstrated to the world Shanghai's ability and level to host large-scale international events. As the construction of large-scale comprehensive venues in my country increases day by day, the research results of this project will surely improve the technical level of the construction of modern large-scale comprehensive venues in my country, and have wide application and development prospects.