The sound insulation performance of external walls, partitions, floors, doors and windows in the main functional space is better than the lower limit specified in the current national standard "Code for Sound Insulation Design of Civil Buildings" GB 50 1 18. The indoor noise level of the main functional space is better than the low limit requirement in the standard.
Rationally arrange the plane layout and spatial function of the building, take measures to reduce drainage noise and pipeline noise, and reduce the noise interference of adjacent spaces and the influence of external noise on the room.
It is advisable to divide all kinds of rooms according to the different requirements of acoustic environment; The noise source space such as the computer room that produces large noise should be arranged in the center, away from the rooms with quiet requirements such as offices and bedrooms. When arranged in a conditional place, effective sound insulation and vibration reduction measures should be taken. The location of the noise source should also meet the following requirements: 1, and the noise source should be set underground;
2. It is advisable to avoid setting noise sources such as water pump room and power distribution room directly below the house;
3. The elevator machine room and elevator shaft should avoid being adjacent to rooms with quiet requirements;
4. Auxiliary rooms such as toilets that generate noise should be arranged centrally, and the upper and lower floors should be aligned.
Sound absorption and sound insulation measures should be taken for ceilings, floors, walls, doors and windows in the following places:
1, crowded places such as corridors and halls of public buildings such as schools, hospitals, hotels and office buildings;
2, stations, stadiums, commercial centers and other large buildings;
3 air conditioning room, ventilation room, generator room, water pump room and other equipment rooms with noise pollution.
Restricted by conditions, the following sound insulation and vibration reduction measures should be taken when the noise source space such as elevator machine room and pipe shaft that produces large noise is adjacent to the space with quiet requirements:
1, the door of the noise source space should not be directly opened to the use space with quiet requirements;
2. The walls, floors, doors and windows between the noise source space and the space with quiet requirements should be soundproof.
3. The walls and ceilings of the noise source space should be treated with sound absorption;
4, elevator and other equipment vibration reduction measures should be taken.
Special acoustics should be designed for important rooms, multifunctional halls and halls in public buildings to meet the corresponding functional requirements.
For the equipment that produces vibration, the foundation should take vibration reduction measures.
Measures such as floating floor, elastic surface, sound insulation ceiling and damping plate should be adopted in rooms with sound environment requirements such as houses, schools and hospitals to strengthen the sound insulation performance of floor impact sound;
1, when radiant floor heating is used, it should be combined with the thermal insulation layer of radiant floor heating to strengthen the impact sound insulation performance of the floor;
2, floating floor cushion should be not less than 40mm high along the wall.
When the building is adjacent to the urban traffic trunk road, measures should be taken to reduce the noise impact:
1. The sound insulation performance of external walls, doors and windows should be strengthened to meet the relevant requirements of the Code for Sound Insulation Design of Civil Buildings.
2, corridors, bathrooms and other auxiliary rooms should be located in the side adjacent to the main road;
3. Reasonable use of the building podium or the bottom protruding design to block the traffic noise along the road, and the width of the building towards the main traffic road should not be too wide. You can also use facilities such as sound barriers to block traffic noise.
When the building adopts light roof, measures such as laying damping materials and setting suspended ceiling should be taken to prevent rain noise.
When the drainage pipe is arranged near the indoor main function room, noise reduction pipes or noise reduction structural measures should be adopted.
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