With the acceleration of urbanization, bridges have become one of the most important elements in urban construction. The main function of the bridge is the transportation hub, which is the key node connecting the two banks or two buried areas, and is also an important part of the route. In cities, bridges also symbolize the economic status and technological level of urban development, and they often become landmark architectural landscapes. The night illumination of this type of bridge naturally becomes one of the important landscapes of the city's night scene. For the landmark bridge lighting in the city, we find that there are some misunderstandings of lighting design.
Misunderstanding 1: There are too many road lights in the car, which affects the functional lighting effect.
Most of the bridges in the city have the functions of motor vehicles, non-motor vehicle lanes, pedestrian passages, and even railway passages through trains. In the lighting design of such bridges, the design specifications of road lighting are usually extended, and the street lamps are extended from the street to the bridge body and run through the bridge. This approach certainly meets the requirements of functional lighting, but it also has a huge impact on the overall lighting effect of the bridge.
The view of the roadway is an important point of view for the bridge landscape, and the street lighting is the main means to ensure the safety of driving. How can we ensure the safety of the vehicle and minimize the impact on the visual effect of the bridge night landscape? For many landmark bridge landscapes, people usually pay great attention to its lighting effects, so the lighting of the bridge itself has been fully considered and designed. These lightings have already reflected the structural elements of the bridge, even the detailed structure, through the lighting, and also provided some indirect illumination to the road surface. The motor vehicle itself also has its own lighting system, so it is driving on the roadway. In the case of a motor vehicle, it does not cause a phenomenon that the road surface cannot be seen clearly.
In order to reflect the continuity of street lighting, the lighting of the bridge roadway usually adopts the street lamp pole of the same height as the street. Since the important landscape parts of the bridge are usually above the road surface, the height of the pole is on the motor vehicle. The upper front view point causes certain interference. Regardless of whether the light pole is in harmony with the style of the bridge itself, its height, density and glare generated by it have already destroyed the overall lighting effect. Even in the case of not turning on the lights during the day, the tight street light poles will affect the landscape effect of the bridge during the day to varying degrees.
The complete elimination of street lamps is bound to reduce the brightness of the roadway. In order to compensate for the safety hazards caused by insufficient brightness, this contradiction can be solved by the following means:
One is to reduce the number of street lights and installation density. For some necessary street lighting, consider installing the installation spacing of the street lights on the bridge to reduce the number and density of street lights and minimize the visual impact of the street lights. The approach part of the approach bridge can be gradually enlarged to form a transition from streetlights to bridges.
The second is to reduce the height of the installation of the lamp, such as the use of kicking lights, buried LEDs and so on. Excessive street lights project the light onto the road surface, and the lighting efficiency is bound to be greatly reduced. The foot light installed on the road close to the road directly projects the light onto the road surface, which not only improves the lighting efficiency, but also avoids the upper front view point. The effect is also formed on the ground, so that the road surface also has a certain landscape effect. Appropriate use of point-like buried LEDs, while clearing the boundary line of the road, also formed a warning role for the driver, improving safety.
The above means not only reduces the influence of street lamps on the landscape effect, but also ensures the safety of driving, and also reduces the difficulty of installation and maintenance. Reducing luminaires and using low-power luminaires also reduces power usage and lowers operating costs.
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