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With the development of the economy, the construction of the subway has entered a period of rapid development. The number of subway lines in various cities is increasing and the network is constantly improving. The subway has gradually become an important means of transportation in people's daily lives. Lighting engineering is an important part of subway construction.
Lighting engineering design, implementation and future maintenance and management levels are an important manifestation of the overall level of subway construction. Our design and research focus should also shift to the non-quantitative evaluation of lighting quality that reflects the interrelationship between people and the environment, so that lighting design not only meets the standard requirements in terms of quantitative indicators, but also considers people's visual characteristics, comfort, architectural lighting. Artistic and other factors.
1 Research status of interior lighting design of subway
Lighting design is still in its infancy in China. The research on lighting design and the artistic characteristics of lighting design in subway space have not received corresponding attention.
In foreign countries, such as Germany, Singapore and Japan, they attach great importance to the design of subway lighting, emphasizing the comfort of people, focusing on the characteristics of the light itself to enhance the characteristics of the space, the three levels of lighting design (brightness, comfort and artistic performance) Force) to fully utilize the actual lighting project.
2 Unfavorable characteristics of the internal space of the subway
Most of the subway space is underground, lacking natural lighting, lack of external landscape, closed environment, lack of vitality, making people easily lose their sense of direction and time, and have a negative impact.
In addition to the general unfavorable factors of underground space, the station also has its own special characteristics. For example, the functionality of the station limits the shape of the subway space. Therefore, the internal space of the subway is restricted by various factors such as the function, structure, use population and psychology of the building. .
3 subway internal space lighting design actual project analysis
3. 1 Hong Kong Metro Lighting Design in Hong Kong China's subway lighting mode mainly adopts horizontal lighting. The lighting arrangement is down-illuminated, and the vertical lighting is supplemented appropriately. Fluorescent lamps with color temperature between 3 500 K and 4 200 K are selected. And downlights ensure good color rendering and high uniformity of overall light environment. The platform of the Hong Kong Metro New Line Station is mainly divided into a waiting area and a boarding area.
The illumination of the waiting area only needs to meet the visual visibility of the person, emphasizing the softness of the light. In the boarding area, the lighting design enhances the route indication information above the screen door and the warning effect on the ground board area to enhance the visual perception of the person. The light environment design level and concept of the Hong Kong subway in China is in a leading position in China. Although there are a lot of leaks in the top light source in some spaces, it causes glare. However, from the overall point of view, the lighting design of Hong Kong subway in China has paid more and more attention to visual factors. Taking visual effects as the starting point, it is improved on the basis of satisfying functional requirements. The quality of the light environment.
3. 2 Singapore Metro Lighting Design The lighting pattern in the Singapore Metro is dominated by vertical lighting, which uses indirect lighting to highlight the boundaries of space and express architectural space effects. The color temperature ranges from 3 500 K to 4 200 K. The lamps and lanterns are mostly single and double tube fluorescent lamps, energy-saving downlights and grille lamps. From the perspective of visual perception, the Singapore Metro weakens the horizontal effect in the treatment of lights, focusing on the stereoscopic effects of walls and cylinders.
At the platform on both sides of the platform, the illumination is higher than the center of the platform and has a high vertical illumination. In the channel area, a linear fluorescent lamp and a beam of equidistant wide beam are mounted above the wall, with a diffuse reflection on the top surface and a light band or advertising illumination on the side.
Through the above introduction, we can see that the lighting design concept of the Singapore Metro is different from the concept of the Hong Kong subway in China. Singapore Metro lighting breaks through the traditional uniform lighting method, adopting the method of selecting and arranging, reducing the number of lamps, reducing energy consumption, reducing glare and achieving better visual effects.
3. 3 Nanjing Metro Line 1 Lighting Design We selected Xinjiekou Station and the New Model Fan Road Station for on-site inspection and testing. Through the test data summary, we found that: the horizontal illuminance values ​​of each space are higher than the national standards, and also higher than the field test values ​​of the Singapore and Hong Kong subways, but the visual effects are not satisfactory.
At the platform level, since the platform level of Nanjing Line 1 has no screen doors (now installed gradually), it is relatively open in space, and only the use of underground lighting is considered in the lighting design, which results in the waiting area and The boarding area is too averaging in terms of illumination and brightness, both in terms of visual efficacy and lighting technology. Secondly, there is a lack of comprehensive consideration of the light environment of space. The wide use of the decorative vertical light strip on the top surface significantly weakens the warning lighting above the screen door, and the disordered arrangement of the fluorescent tubes, so that passengers can reduce the ability to recognize information in such an environment, resulting in vision. Confusion and psychological discomfort.