This project belongs to the field of civil engineering and architecture. Countries around the world, especially China, are building a large number of complex high-rise buildings, which are characterized by ultra-high structures, massive volumes, complex systems, and novel components. There are no technical standards to follow, and the risk of earthquake losses is high, making seismic design a challenging task worldwide. Currently, there is an urgent need to shift from collapse-resistant design to earthquake loss control in seismic design. This project has lasted for ten years, breaking through the key technical bottlenecks of complex high-rise building seismic design, establishing performance-based seismic design theory for complex high-rise buildings, developing performance evaluation and design technologies, and successfully applying them to major engineering projects. 1. Main Innovations (1) Established a new theory for the seismic analysis of complex high-rise buildings: To overcome the technical bottleneck of low precision and long time consumption in the seismic analysis of complex high-rise buildings, a new type of component with high precision analysis model was proposed. Created a new method for efficient numerical simulation of overall structures based on multi-scale coupling elements, with computational efficiency increased by more than four times. Pioneered the vertical mixed high-rise structure damping calculation theory, developed proprietary intellectual property rights in computation analysis software, and formed the monograph 'Seismic Performance Theory and Application of Complex High-Rise Buildings'. (2) Created new technology and equipment for the seismic performance test evaluation of complex high-rise buildings: Faced with the technical difficulties of evaluating the seismic performance of complex high-rise buildings, systematically created the theoretical and method of simulated earthquake vibration table tests for complex high-rise buildings, formed the monograph 'Building Structure Vibration Table Model Test Methods and Technology', invented a multi-dimensional multi-mode earthquake motion test device for building curtain walls considering the impact of the main structure, and developed software for selecting seismic acceleration time histories to effectively control the input of earthquakes. (3) Established a multi-level New Method of Performance-Based Seismic Design for Complex High-Rise Buildings with Multiple Goals: Faced with the technical challenges of complex high-rise building structures, which are characterized by their intricate hierarchy and high difficulty in controlling seismic damage, a multi-level seismic damage model and a multi-stage seismic performance objective theory have been established. An equivalent seismic damage yield strength spectrum reflecting ground motion characteristics and structural properties has been created. A performance-based design method for complex high-rise buildings considering cumulative seismic damage has been developed, achieving a technological leap from traditional single-level, single-objective, general building seismic design to multi-level, multi-objective, complex building seismic design. (4) Practice and Innovation of Major Complex High-Rise Building Projects: Successfully solved key issues in the seismic design of super-tall buildings at 600 meters level such as China's tallest and second tallest building - Shanghai Tower (632 meters), under construction Wuhan Greenland Center (636 meters), Tianjin 117 Tower (597 meters), etc.; And it has been applied to the seismic design of 22 complex high-rise buildings such as Nanjing Zifeng Tower and the China Pavilion at the Expo, significantly enhancing the seismic resistance of the structures. For the first time, a systematic performance-based seismic design method for ultra-high and complex high-rise buildings was formed, and the first government-approved and issued 'Guidelines for Seismic Design of Over-Limit High-Rise Building Engineering' (2nd Edition) was compiled, filling the gap in domestic standards for seismic design of over-limit high-rise buildings. 2. Main Innovation Achievements and Influence The project results have been incorporated into national seismic design standards and Shanghai regulations. Two monographs have been published, one design guide compiled, 10 national invention patents authorized, 4 software copyrights obtained, and 142 papers published, including 36 SCI-indexed and 42 EI-indexed papers, with a total of 1045 citations. The main design achievements of the project have won the National First Prize in the Engineering Survey and Design Industry. National Excellent Building Structure Design First Prize, etc. The project achievements have reached "overall international advanced," and the papers have won 5 awards for excellent papers in top international academic journals. 3. Promotion and Application, as well as Social and Economic Benefits The results have been successfully applied in 22 landmark complex high-rise buildings in 13 earthquake-resistant cities including Shanghai, Shenzhen, Tianjin, Wuhan, and Urumqi. In the past three years, the added value has exceeded 100 million yuan, and indirect economic benefits of more than 180 million yuan and significant social benefits have been created. It has led the new direction of earthquake-resistant design for complex high-rise buildings both domestically and internationally, with a profound impact on promoting the development of industry technology.