This project belongs to the field of civil construction. In response to the problems of noise and vibration interference faced by building high-level concert halls in the central Urban area, through independent innovation, the project has successfully developed the domestic first semi-nested type with efficient sound insulation, vibration isolation and noise reduction effects. The fully floating double-layer hollow shell sound-insulating concrete structure solves the sound insulation and vibration isolation problems of the concert hall building under the influence of strong vibration sources such as subways and complex environmental noise, and establishes a system based on structural sound insulation and vibration isolation technology, architectural acoustics technology, The main innovative achievements of the high-level concert hall design and construction complete technical system with electromechanical system noise reduction technology as the core are as follows:

1. The first semi-nested fully floating double-layer hollow shell sound-insulating concrete structure and its design analysis method. Breaking through the limits of sound insulation and vibration isolation of traditional structures, a new structural system mainly characterized by a basic spring vibration isolation system and a large space hollow shell has been formed. Corresponding design analysis and performance evaluation methods have been established, and a saddle-shaped double-layer hollow roof optimization method based on parametric geometric models and multi-parameter optimization technology has been formed, as well as a design analysis method for ultra-long large opening floors and large cantilever basement exterior walls with nested structural chassis.
2. Innovatively developed the construction technology of a fully floating double-layer hollow shell sound-insulating concrete structure. A floor spring isolation system installation technology based on high-precision control methods has been formed; a connecting rod drive retractable formwork system has been innovatively designed, realizing the overall demoulding and improvement of the hollow wall formwork system, and solving the problem of no operating space in a narrow cavity. Technical problems, while avoiding the engineering problem of sound bridges caused by residual formwork; based on BIM technology, the construction problem of ultra-high and large-span hyperboloid hollow concrete roof structures has been solved.
3. Formed internal acoustic analysis and excellent sound effect creation technology in the rehearsal hall. Based on numerical simulation technology and physical simulation model acoustic testing technology, by analyzing and designing the relationship between the reflected sound on the stage and auditorium and the interior space shape, technical means such as anti-sound, sound absorption, and internal shape optimization are used to ensure that every studio can achieve an "immersive" vocal effect everywhere; Innovatively use unique acoustic processing technologies such as adjustable anti-sound panels, tilted irregular reflective walls, damped sound-absorbing seats and stage floor resonance to jointly create a perfect sound effect for the concert hall.
4. Establish a noise reduction and noise reduction technical system for electromechanical systems. On the basis of systematic analysis and experimental research on noise sources, and through technological innovation on traditional electromechanical systems, mechanical and electrical equipment vibration isolation technology, wind duct system coil-wound noise reduction technology, flexible connection technology with structures, stepped air outlet low-speed air supply technology and other systematic sound insulation and noise reduction technology systems were finally formed.
   This project has obtained 9 nationally authorized patents (including 6 invention patents), 2 national-level construction methods, and 3 Shanghai-level construction methods. The results have been included in 2 works and 1 Shanghai-level specification. 14 academic papers have been published and won various domestic and foreign awards. There are 10 awards and recognition of the transformation of high-tech achievements in Shanghai City. The scientific research results have reached the international advanced level through expert appraisal and scientific and technological novelty search.
   The results of the project have been fully applied to the Shanghai Symphony Orchestra Concert Hall project. The first high-quality symphony concert hall with a fully floating double-layer hollow shell sound-insulating concrete structure has been successfully completed in China, filling a domestic gap. The floor spring vibration isolation system can isolate more than 90% of subway vibration, and the key sound effects control in all aspects of the concert hall has reached the high level of NC-15 (world-class), producing a total of 316 million yuan in economic benefits over the past three years. Relevant achievements have been promoted and applied in the engineering design of the Opera House of the Shanghai Conservatory of Music, making my country rank among the international advanced in the field of design and construction of high-level concert halls, promoting the progress of my country's building technology, and achieving significant economic and social benefits.