Case Analysis of Landscape Lighting Planning and Design on Both Sides of Yijiang River in Nanchang City

To operate a city, it is to make full use of the market economy means to gather, restructure and operate all the assets of the city, to obtain income from it, and to seek self-accumulation and self-development of the city. For a long time, landscape lighting construction, as an important part of the city's image construction, has been invested and constructed by the government. There is no direct economic return after the project is completed. With the change of urban manager's thinking, the lighting design concept and the continuous improvement of technology, "light" as a medium for disseminating information is more direct and comprehensive to the vitality and economic promotion of the city. It is also a major change in the past landscape lighting as a city “face project”, building only about investment and not paying attention. This paper takes the landscape lighting project on both sides of Nanchang and Yijiang as an example to analyze and consider the urban landscape lighting in urban management.

The Nanchang Yijiang Cross-Strait Landscape Lighting Improvement Project involves 296 coastal and deep high-rise buildings in the planning section of the project. The two shores (including Bayi Bridge and Nanchang Bridge) are about 8 kilometers long and reveted along the coastal landscape. Improvement of building, landscape lighting and central control systems. After half a year, the entire project was completed at the end of December, and it has achieved good operational results and social repercussions.

2 Using the "light" to manage the city's foundation

2.1 Tourism value-oriented resource advantages and current status issues

The 2006 China Urban Tourism Competitiveness Development Research Report shows that Nanchang's tourism competitiveness ranks 16th among all provincial capital cities except for location advantages. Other rankings are after 20, especially the environmental attraction is needed. , resource attractiveness, etc. (see Table 1). On the two banks of the Yangtze River, there are national level 4A scenic spots, Tengwang Pavilion, urban leisure and business exhibition and tourism resources enrichment area, Honggutan CBD, Bayi Bridge, Qiushui Square Music Fountain, the world's first Ferris wheel, and Nanchang tourism resources. One of the gathering places, an important display area of ​​the city image.

The quality of the night landscape image was poor on both sides of the river before the transformation. Visitors are mostly concentrated in the daytime attractions, and the nighttime attraction is lacking, mainly in:

1) The riverside lighting interface is discontinuous and the overall environment is dim;

2) The existing lamps are seriously damaged, and the overall lack of order level leads to confusion of the visual interface and lack of picture;

3) The quality of single lighting is not high, and the overall lighting lacks the unique characteristics of Nanchang. The value of night travel is not high.

2.2 Strong promotion of business entities

Nanchang Yijiang cross-strait landscape lighting improvement project. From the beginning of the project planning, the municipal party committee and the municipal government have positioned it as a high starting point and high standard tourism economic project, and given great attention and strong promotion. The project was built by Nanchang Tourism Group Co., Ltd.; the model of “government procurement and service outsourcing” was realized, and the operation and maintenance of urban landscape lighting facilities were carried out by enterprises. In the actual construction period of only 71 days, the project office, construction unit and construction team have comprehensively considered and carefully planned the project management mode. Cooperate with the construction site to coordinate and coordinate, so that nearly 300 buildings can be implemented, and the implementation of design effects can be guaranteed to the greatest extent.

3 Characteristics of using the "light" to operate the city

Running the city with “light” runs through all aspects of planning, design, construction, management and operation in the project from start to finish. More emphasis on high starting point planning, high standard construction, and high efficiency management.

3.1 Planning and designing with business ideas

3.1.1 Basic lighting: Establish lighting order to form a sense of urban space.

The landscape lighting design highlights the basic lighting for most of the time, with static and white light as the main features, showing the urban space and the characteristics of the building itself. Set the brightness, color level and order of the lighting for the building classification.

In the lighting method, the high-brightness white light in the West Bank highlights the Red Valley Beach CBD. The skyline of the residential section is too straight, not unified lighting on the top, but the visual reshaping of the shaded West Mountain outline intention on the facade. The East Coast Tengwang Pavilion has been submerged in tall modern buildings on both sides during the day. The use of high-brightness and high-saturation lighting for Tengwang Pavilion restores the color of the green tile red wall and darkens the modern buildings on both sides. At the same time, a light column is placed behind the Tengwang Pavilion to visually increase the influence of Tengwang Pavilion. The skyline of the East Coast buildings is beautifully undulating, and the lighting highlights the top of the building, echoing the intention of the “West Mountain” in the West Bank.

3.1.2 Theme Lighting: Exploring urban cultural resources and shaping the uniqueness of Nanchang.

Landscape lighting design Every hour, turn off the basic lighting and turn on the theme lighting. It takes about 10 minutes to attract visitors with dynamic performances. The LED point light sources installed on the facades of 96 buildings form a long scroll on both sides of the building, showing the unique cultural characteristics of Nanchang, such as the mountain waterfall, the Tengge autumn wind, and the falling haze.

3.1.3 Night Tourism Organization: Night travel planning to enhance nighttime economic vitality.

It is planned to set up a cruise every hour, starting from Tengwangge Wharf and designing a 13km voyage. Propose the best view point and time schedule for cruises. In the course of the cruise, the visitors will experience the shocking scene and the beautiful picture of the whole bank. The hull is equipped with LED screens and advertising light box words, which can increase financial revenue while promoting promotion. All piers and river banks are equipped with self-illuminating lampposts, like lighthouses, to guide cruise ships. Coastal tours choose the Ferris wheel, Qiushui Square, and Tengwang Pavilion as tourist distribution centers. You can use the Battery car to contact the route and set up a stop at the coastal restaurants. Further promote the coastal night economy.

3.2 Construction and implementation by means of management

Long-term management is inseparable from high-quality construction and implementation. This requires a balanced approach to regulatory approaches, technology implementation, and energy conservation and low carbon.

3.2.1 Lighting inspection guarantee design effect

In view of the effects and quality of the lamps on the market, it is impossible to guarantee the quality of the winning products with a single power requirement. In this project, the design effect is converted into a quantitative indicator of brightness and light color. The luminaire adopts the method of joint bidding by the owner and the general contractor. In the whole process of lighting bidding, sample setting and lighting inspection, the inspection mechanism will test the effect and safety of the luminaire, and the designer will control the lighting effect to ensure The effect is achieved.

3.2.2 Operation of new technologies, new processes, and refined design implementation

(1) Technology using multi-story and large-scale integrated linkage control system

On the technical level, the overall lighting of 96 single buildings is linked, and this large-scale successful application is the first in the country. The control system combines the LED video control technology with the GPS synchronization to accurately realize the scene effect of displaying any frame of pictures in milliseconds.

In order to make the color more delicate, using RGB+W color control system, 4000k white light can not only participate in colorful theme lighting performance, but also make the color change more rich and soft. It can also be used as part of the basic lighting to present lighting effects. The RGB+W control system has a control data volume of more than 1 million points, a large scale, and all the lamps and controls are based on the bus system, and the reliability is high.

The project adopted the network file server model, enabling the future lighting performance content to realize the remote data update technology of the Internet. This large-scale application is also the first in the lighting industry. The constantly innovating large data volume lighting show content can be automatically updated to the control device via the network.

(2) Tengwang Pavilion ancient architectural detail craft

The first is the perfect presentation of the color of Tengwang Pavilion. It has been repeatedly tested to determine that the lamps of Tengwang Pavilion are green (4000K) and the green color ratio is 5:1. Tengwangge red wall wall washer adopts white (2700K) and red color ratio as 6:1 LED lamp, which is better for reducing the color of the material itself.

Secondly, the fixtures are hidden and do not destroy the daytime landscape. Tengwang Pavilion is a non-cultural material. In order to ensure the lighting effect, a linear wall washer is added to its forehead. A baffle is added outside the lamp, and the frontier painting is painted by the professional building maintenance staff of Tengwangge, which is perfectly integrated with the building.

(3) Using professional lenses to achieve lighting effects

The height of the bridge tower of the Bayi Bridge is 103 meters. Due to the height and installation conditions, the lamps can only be installed on the bottom of the bridge tower to cast light. In order to realize the design effect of uniform illuminating of the pylon, in the implementation process, a 4 degree angle professional lens is adopted, and the combination of extremely narrow beam lamps is used to achieve the lighting design effect.

3.2.3 Energy saving and environmental protection to improve environmental benefits

(1) Determine the brightness order of each building through reasonable planning and design, avoid the overall brightening, and achieve design energy saving.

(2) Selecting lamps with more reasonable light distribution, saving energy and environmental protection and energy saving. For example: Tengwangge lighting replaces the original high-power wide-beam sodium lamp as a low-power LED floodlight . After the implementation, Tengwang Pavilion consumes only 30% of the original landscape lighting. The Bayi Bridge lighting was replaced by the original 1000W lamps to the current 90W LED 4 degree angle lamps, which greatly reduced energy consumption.

(3) The design adopts two sets of control systems, strong and weak, and turns on the lamps in different time periods. The basic mode includes a power saving mode and a viewing mode. The opening period combines the above modes according to festivals, weekdays and major festivals to form multi-mode and multi-scene control, which effectively saves energy. The theme lighting point source has an average total power consumption of about 500 kW. The point source is distributed over a building facade of approximately 300,000 square meters with a power density of approximately 1.7 W/m2.

(4) Reduce fugitive light: Protect the dark sky by selecting a fixture with precise light distribution. For example, the Bayi Bridge Tower and the Tengwang Pavilion are all equipped with professional-grade 4 degree angle lens lamps. Residential buildings are installed on the concave and side walls of the outer wall with lamp baffles or lamps. There is no dynamic flicker change, and no direct light enters the room. Avoid light interference and do not affect residents' rest.

3.3 Operation management in a business manner

3.3.1 With cultural propaganda as the core, theme mode phased update

Promote the cultural characteristics of Nanchang through the theme lighting, show the green culture with the pattern of “Western Shandong Water”; “Tengge Qiufeng” is a typical patina culture; and the modern culture represented by the Ferris Wheel and the Red Valley Beach CBD. The theme lighting display content is easy to change, the owner Nanchang Tourism Group has organized a professional team to change the program every three months, so that visitors have a fresh experience. Make the night tour Nanchang and the two banks become an important stop for urban tourism.

3.3.2 Night Tour Product Organization Planning

Tourism products that are compatible with cross-strait landscape lighting are gradually being constructed and improved. On the one hand, to increase the night tour on the river, the tourism group purchased a cruise ship to organize a night tour of the Lijiang River. In addition to the appropriate lengthening of the night tour route, it also used the "water party" and "family mobilization" to attract citizens and tourists. On the other hand, for the tourists on both sides of the strait, follow the theme picture through the Qiu Shui Square fountain music, broadcast FM can be synchronized to play, so that tourists are immersed. On this basis, the travel company is also preparing to open the night tour of the Deng Tengwang Pavilion to increase tourism revenue and stimulate the night travel economy through tickets, advertisements and catering.

3.3.3 Multi-positive means of propaganda

Since the project is still in the process of implementation, it has been tracked and publicized through various media such as TV stations, newspapers, magazines, and the Internet. After the completion of the project, in addition to continuing to increase publicity, in February this year, the first "lighting book scroll charm of the Yangtze River" night photography contest was held in Jiangxi. Achieve the social influence of “all people's attention and participation of the whole people”.

4 Managing the value of the city with “light”

4.1 Establishing human values ​​and brand image

The urban landscape lighting on both sides of the Yangtze River uses "light" to highlight the urban construction pattern of Nanchang's "Taiwan Pavilion", and further conveys the profound historical and cultural origins and development process of Nanchang, showing the unique cultural connotation of Nanchang City. The use of the overall scroll-style approach has increased the release of urban cultural information, allowing foreign visitors to leave a deep memory of Nanchang culture after experiencing a visual feast. The Nanchang citizens will enhance their sense of city pride and show their special respect and love for the historical connotation of Nanchang; promote cultural exchange and communication, raise awareness, and establish an urban cultural brand image that belongs to Nanchang alone.

4.2 Enhancing social effects and economic value

By operating the city with "light", we will vigorously develop night tourism in Nanchang. Cooperate with the night landscape to create a series of tourism products and related catering and entertainment support services. Turn night lighting into a predictable balance of payments without a direct economic return. Promote the improvement of Nanchang's service function, improve the city's functional structure, improve the investment environment, and enhance the charm of urban life and the charm of work. With the construction of night landscape lighting on both sides of Nanchang and Yijiang, it will promote and promote the development of surrounding commercial and cultural entertainment industries. Enhance the vitality and vitality of Nanchang City.

Operating a city with “light” is a systematic project with the goal of achieving an effective combination of human, social and economic benefits. To a certain extent, improving Nanchang's environmental attractiveness and resource attractiveness will play a positive role in improving the city's competitiveness.