1 Introduction
Corridors and stairwells are an integral part of the building as a means of daily flow of personnel and emergency evacuation in buildings. As a place where people flow rather than work or stay for a long time, people's requirements for lighting in corridors and stairwells are not high. "It's a little brighter, it doesn't matter if it's dark." When designing a lamp, the designer often uses a few lights to make it feel that the illumination is not enough. On the other hand, since the luminaire manufacturer cannot provide the light distribution curve of the luminaire or related technical data, it also lacks basic calculation conditions.
The consequence of this sense of lighting is often that there is a large gap between the actual situation and the requirements of the specification. The illumination of emergency lighting in corridors and stairwells is a mandatory requirement and must be treated with caution. The author believes that it is necessary to explore the lighting design of corridors and stairwells, and hopes to obtain some generally applicable conclusions through representative cases.
2 corridors and stairwells
The lighting design of corridors and stairwells is an integral part of building lighting design and should be coordinated with the overall function or nature of the building. Like other indoor lighting, the visual environment provided by it not only meets the physiological requirements, but also meets the psychological requirements. The appropriate lighting method should be selected according to the specific situation. In practical engineering applications, there are three common ways of lighting in corridors:
a. Place the ceiling lights in the corridor by the separation of the structural beams. This method is most commonly used in engineering design. It is suitable for residential buildings or residential buildings or industrial, teaching, office, scientific research buildings in stairwells or corridors, especially in outer corridors. The ceiling luminaire is equipped with a dustproof gasket, which has good sealing performance and can prevent small flying insects from entering the lampshade. It is suitable for places where there are many dust and mosquitoes in the outer corridor. The illumination level of this type of illumination is not high, but the cost is low. The lamps produced by the regular manufacturers have good light transmission properties, soft light, and no discoloration. The lamps are more efficient and can achieve better results. When designing, try to use quality products. In this way of lighting, the illuminance value can be calculated by the point illumination calculation method.
b. Use recessed downlights. This method is suitable for use in suspended buildings, apartments and other residential buildings or corridors and stairwells in hotels, hotels or other recreational venues. The light source of the recessed downlight is generally a warm-colored, low-power energy-saving lamp that is used to create a warm, peaceful or romantic atmosphere that can be coordinated with the overall function of the building. Due to the different depth and width of the downlight cup, the downlight is divided into a vertical downlight and a horizontal downlight. Each form has a variety of styles, and the light distribution curves are different. Generally, it is a narrow light distribution or a medium light distribution. Lamps. When designing and selecting, pay attention to the aspect ratio of the lamps to avoid uneven illumination on the corridor and obvious spots. 5 至 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 . 75 m. In this way of lighting, the illuminance value can be calculated by the point illumination calculation method.
c. Use a box-type fluorescent lamp ceiling mount or a grid-type fluorescent lamp top to be evenly arranged. The illumination of this method is relatively high, and it is suitable for the inner corridor of office, scientific research and teaching buildings (the outer corridor should be sealed and dustproof) to create a bright and efficient lighting environment. The average illuminance of corridors and stairwells can be easily calculated using the factor method.
In addition to the above three methods, the corridors of some special buildings should also consider special needs. For example, the corridor lighting design of the hospital ward has special requirements. The Lighting Design Handbook (Second Edition) 286 pages writes: “Corridor lighting should be coordinated with the lighting of its adjacent rooms so that people do not feel too much illuminance when entering the room through the corridor, therefore, the illumination of the corridor It should not be lower than 70% of the illuminance of the ward. At the same time, it should be noted that the night light can not be injected into the ward, affecting the rest of the patient. The luminaire should be placed between the two wards, and should not be placed at the position above the door and the door. For the night light, the light source should use white LED or use the ceiling light that does not affect the ward. The lights in the corridor should be placed on the side of the corridor to avoid the irritating sensation of glare when the patient lying on the patient cart passes through the corridor." Therefore, corridors and stairwells should be properly lit according to the function of the building.
3 Specification of illumination requirements for corridors and stairwells
Architectural Lighting Design Standards (GB 50034 - 2004) 5. 4. The illumination requirements for corridor and stairwell lighting are shown in Table 1.
The 2004 edition of Architectural Lighting Design Standards has greatly improved the illumination requirements for corridors and stairwells, which is inseparable from the development of the economy and the improvement of people's living standards. On the other hand, Article 11.3.2 of the “Code for Fire Protection of Building Design†(GB 50016 -2006) stipulates the illumination value of emergency lighting for evacuated walkways (referred to as “corridorsâ€) and stairwells in the form of mandatory provisions. : The minimum horizontal illumination of the evacuated walkway shall not be less than 0.5 lx; the minimum horizontal illumination of the ground in the stairwell shall not be less than 5.0 lx.