When a sports building uses a variety of functions, it should determine the acoustic indicators according to its main functions, and take into account other functions through the sound reinforcement system. The acoustic treatment solution for sports buildings should combine the structural form, configuration of auditoriums and venues, speaker setup, and fire and moisture resistance requirements. When dealing with problems such as absorption, reflection, and avoidance of acoustic defects in the competition hall, natural sound sources and loudspeakers should be used as the main sound source. The construction sound and sound reinforcement design of sports buildings should be coordinated and synchronized. The broadcasting studio, commentator's office, and voice control room of the sports building's radio and television rooms should be acoustically treated as required to achieve the predetermined targets; and the exercise rooms (halls), athletes' lounges, and coaches' rooms should be set up for cable broadcasting and intercom. The system should be determined according to the facility level. Sports buildings should meet the permitted noise standards. The impact of noise generated by sports competitions and sports facilities on the surrounding environment shall comply with the current “Environmental Noise Standards for Urban Areas†GB 3096. The main acoustic indicators of the stadium should meet the requirements of Table 9.0.7. Note: According to the different scales of the stadium, the relevant indicators may have appropriate changes. The acoustic design of a stadium should meet the following requirements when using a sound reinforcement system: The auditorium has enough sound levels to meet the necessary functions and requirements of the stadium; All auditoriums were covered by sound reinforcement; There is sufficient clarity in the transmission of the language and a certain degree of fullness in the dissemination of music; Reduce acoustic interference to off-site; Safe structure, easy operation, easy maintenance, wind and rain resistance, reliable performance. The sound reinforcement design index of the gymnasium shall be based on the requirements of the current industry standard “Design and Measurement of Acoustics in Gymnasium†JGJ/T 131. The relevant facilities can be implemented in accordance with the relevant regulations of the current industry standard "Civil Building Design Code"> JGJ/T 16. The reverberation time of the stadium should be filled with 80% of the audience and be used as a basis for design calculation and acceptance. The ratio of the reverberation time of 500 to 1000 Hz in the full-field stadium and the ratio of the reverberation time to the reverberation time of 500 to 1000 Hz specified by the level and volume of the integrated gymnasium should comply with Table 9.0.11-1-l and Table 9.0.11- 2 provisions. The ratio of the reverberation time of 500 to 1000 Hz and the reverberation time of each frequency to the reverberation time of 500 to 1000 Hz specified by the swimming pool hall according to the grade and per volume shall be in accordance with Table 9.O.12 and Table 9.0.11. -2 regulations. The ice-skating hall with figure skating performances can be designed with the reverberation time of the game hall in the integrated gymnasium that is larger than 80,000 m3 in the content area of ​​9.0001-1. The reverberation time of the special gymnasium competition halls such as ice hockey, speed skating, tennis, and track and field gymnasiums can be designed according to the reverberation time of the pool hall. The reverberation time should be calculated according to the following formula: six frequencies of 125Hz, 250H-z, 500Hz, 1000Hz, 2000Hz, and 4000Hz. The calculated value is taken to one decimal place. (9.0.14) Reverberation time (s) in the formula; Competition hall (or room) volume (m3); Indoor total surface (m2); The average sound absorption coefficient in hall (room) m; Sound system in the air (m-1). The average sound absorption coefficient in the hall (room) shall be calculated as follows: (9.0.15) The surface area (m2) of the inner part of the hall (chamber); The sound absorption coefficient corresponding to the surface area S; The number of people or objects; With the corresponding sound absorption (m2). The design of noise control in the competition hall and related houses should take measures from the overall design, floor layout, sound insulation, sound absorption, noise elimination, and vibration isolation of buildings, and the background noise must not exceed the corresponding room (room) background noise limits. . When the gymnasium's game hall, VIP lounge, sound reinforcement control room, commentator's room and sound reinforcement broadcasting room are not occupied, the background noise limits of the hall (room) under normal operating conditions of ventilation, air conditioning, dimming, etc. Should comply with the provisions of Table 9.0.17. Noise control and other acoustics should meet the following requirements: The competition hall should use the rest room to isolate the external noise, and the rest gallery should do sound absorption and noise reduction. The weighted sound insulation R of the VIP lounge enclosure structure shall be determined based on its environmental noise conditions; The partition wall between TV commentator rooms should have enough weighted sound insulation values; the reverberation time of the commentator room should not be greater than 0.5 s in the frequency range of 125 to 4000 Hz, so the room must be sound-absorbed. ; Access to return air ducts in the competition halls, VIP lounges, sound reinforcement control rooms, television commentator rooms, sound reinforcement studios, etc. shall be provided with measures for noise elimination, noise reduction and vibration reduction. Wind outlets should not have barriers that cause regenerative noise; Various equipment rooms such as air-conditioning rooms and boiler rooms should be kept away from quiet rooms such as game halls and VIP rooms. When it is adjacent to the main building, effective noise reduction and vibration isolation measures shall be taken. No significant echoes, trembling echoes, multiple echoes and other sound quality defects shall be generated in auditoriums and competition venues in the stadium. They shall be considered collaboratively in the design of buildings and sound reinforcement systems. The general requirements for the sound reinforcement design of the gymnasium, the setting of microphones and speaker systems, and the indicators and requirements of the sound reinforcement control room shall comply with the provisions of the current industry standard "Design and Measurement of Acoustics for Gymnasiums" JGJ/T 131.
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