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Case Study of Design and Reconstruction of Night Lighting in Dali Ancient City in Yunnan Province

Case Study of Design and Reconstruction of Night Lighting in Dali Ancient City in Yunnan Province

Landscape lighting
2018/01/05 13:50

1.1 Overview of the ancient city project
The ancient city of Dali referred to as Ye Yu, also known as the Purple City, its history can be traced back to the Tang Tianbao years, Nanzao Wang Ge pavilions built by the Feng Yang Sheep City (now the west of the city tower) for its new capital. Now the ancient city was built in the Ming Hongwu fifteen years (AD 1382), a radius of twelve years, five meters high walls, two feet east and west, north and south each have a watchtower, corners and turrets. At the beginning of liberation, the walls were demolished. In 1982, Nancheng gate was rebuilt, and the first word of Dali was set by Guo Moruo. From Nancheng Gate into the city, a Fuxing Road with direct access to the north gate has become a thriving market with street-side shops set up to sell marble, tie-dye and other ethnic arts and crafts and jade jewelry. Some old streets and lanes, can still find the old style, the garden flowers and trees, birdsong sound, outdoor streams and streams. Three one-of-a-kind, a few scenes still potted flowers. The east-west protection of the ancient city Road, known as Foreigner Street. Here one after another Chinese and Western restaurants, cafes, teahouse and handicraft shops, signs, advertisements and more with Western writing, sucking blond foreigners, wandering here, looking for oriental ancient rhyme, gradually became a unique landscape.


February 8, 1982, the State Council announced that the ancient city of Dali as one of the first batch of 24 historical and cultural cities. Urban roads in Dali City still maintain the chessboard grid structure since the Ming and Qing dynasties, which is known as the 19th Street. The two watchtowers confront each other were restored. The city from south to north, a street runs through them, deep lane Lane, criss-cross from west to east, the whole city Qing Shui roofs, pebbles piled walls, showing the ancient Dali, chic. One kilometer northwest of the ancient city, Dali San Patriot, listed as the first batch of key cultural relics protection units by the State Council, is opposite the Hongsheng Temple tower in the southwest corner of the ancient city, adding a splendid color to the ancient city.

Dali City Hall in order to improve the quality of urban tourism, the development of tourism economy, the special authority of the ancient city of Dali Cultural Relics Authority of the ancient city of Dali night lighting on the basis of the deepening transformation, and pision I with professional lighting design team strength and excellent product strength, After several rounds of fierce competition, it became the sole recipient of the lighting project of the ancient city of Dali.

2.1 design ideas positioning
Owners and designers unanimously believe that the lighting renovation should be harmonized with the style of the three previous landscape productions of the ancient city of Dali to truly restore the historic charm of the ancient city architecture and highlight the local bright spots based on the unification and harmony of the overall situation. By using LED energy-saving products, Brightening production technology and cost-effective.

3.1 to transform the design range
The project design scope includes the main axis of the ancient city, the green belts on both sides of the trunk road and the ancient city gate and other important landscapes. According to the functional differences of different regions in the ancient city of Dali, three regions A, B and C are pided.


4.1 Environmental Analysis
Environmental analysis of the project involves three aspects: the relationship between the bottom, use and the main use. In relation to the bottom of the project, on the large-scale scale of this project, the central axis and the road form a homogenous bright grid, with darker water systems, brighter streets on both sides, and more abundant levels. So the axis brightness should be carefully controlled, should not be too bright to affect the brightness of other buildings outside the street design and control of the difficulty of the same, but also to avoid the illumination difference is too large, people adapt to the eye and the reaction will affect the visual experience; the same should be avoided Spillover affect residents rest and ecological environment.

In addition to the central axis of the commercial street, several gates is the most important design, it should be reasonable to control the brightness and the use of reasonable lighting, while paying attention to control the operation of energy costs. The original design of the city gate does not have a unified plan, resulting in inconsistencies and unification of the light color and design style. In addition, some lamps and lanterns have been aged, damaged and unable to light up. Therefore, they should be dismantled or repaired. Other environments are not cited in detail.

5.1 Design the main content and description
5.1.1 Cangshan Gate Cangshan Gate Gate is designed with the exception of tourists outside the south gate. Backing to Cangshan, 214 State Road passes through here and adjoins the three towers of Chongsheng Temple. It is one of the landmark buildings in the ancient city.


5.1.2 Old North Gate ancient ancient vicissitudes, is the ancient city of Fuxing Road, the northern end of the shaft.


After analysis, Cangshan Gate and the ancient city of North Gate at night, both in the lighting design for the performance of its grand atmosphere for the purpose of the performance of metal halogen floodlights wall, watchtower use energy-saving products LED lamps to dress up performance character.

5.1.3 The north section of Fuxing Road The north section of Fuxing Road is a section of ancient street that was omitted from the previous three times. The houses maintain the original appearance of the original wind and the cultural landscape is simple and natural. Many of them are brightly-lit buildings such as churches, cultural centers and hospitals .


Fuxing Road night lighting design continuation of the previous lighting style, in order to show its architectural features, ethnic characteristics, business climate purposes, the main use of efficient T5 stent lighting for lighting.



Below the left side of the big picture and the right below the picture shows the church, the church as a bright spot on the Fuxing Road, with T5 wash wall light outlining the building shape, with LED yellow cast light rendering interior window frame effect, cross the LED cabinet body light production process . Fuxing Road Hospital in the upper right corner of the hospital, focusing on the lighting effect of a clean and serene atmosphere, the design of T5 wall lamp, highlighting the entrance of the national style architectural style.


Cultural Museum is different from Fuxing Road, the overall architectural style, with metal halide lamp, wall wash light, yellow LED for the facade effect at the same time, and then use the metal halide lamp entrance to the two quite large banyan tree performance.

5.1.4 Renaissance junction The Renaissance intersection is the intersection of Fuxing Road and Yu'er Road. This area is a quaint street. The houses maintain the original appearance of the original wind and the cultural landscape is simple and natural.



Wall wash light rendering, increasing street illumination, but also enhance the business climate. Here also as a street intersection lighting rendering, using wall washer.

5.1.5 Foreigners Street is a very unique street in the ancient city of Dali, the streets have a variety of characteristics on both sides of the bar, snack bar, modern and ancient confluence. Wash the wall at the entrance to render architectural shapes, guide visitors easy to understand, experience Western style.


5.1.6 Erhaimen is one of the landmark buildings in the ancient city. Through the improvement of lighting layout and projection angle at night, Erhaimen can highlight the historical bumpiness, tranquil and peaceful atmosphere of the ancient tower and make the tourists fall into the contemplation of history. Continuation of the former tower lighting style, the use of metal halide lamp, sodium lamp and watchtower, door T5 wall wash light, real restore the ancient style.


5.1.7 Gucheng Administrative Committee building using high-pressure sodium lamp warm ambience, and the use of metal halide lamp to restore the true nature of the building, reflecting the government functions and management of the people-oriented harmony, pragmatic truth-seeking concept and image.



In the design is still continuing the style of the watchtower, in addition to building, tree floodlight rendering, more into the use of moat sodium lamp, so that the building has a solid foundation and affinity.

6.1 In order to enhance the fun of the ancient city night view, in the green belt design of some of the landscape lighting, life for the spring, which means full of vitality.

7.1 green, energy saving and environmental protection measures
The project from the beginning of the design, has been to take the energy saving and environmental protection and safety as the first design principles and requirements, so to ensure the design of illumination and light on the basis of saving lighting as much as possible electricity. Energy-saving lighting, mainly through the use of energy-efficient lighting products, improve quality, optimize lighting design and other means.

For the electric light source, we choose the trichromatic energy-saving fluorescent lamp with high luminous efficiency and the gas discharge lamp with high luminous efficiency and LED light source. We mainly choose reasonable light distribution and energy-saving ballasts with special attention to the energy-saving factor of the ballast. At the same time also pay attention to the rationality of the control of the scene lighting, the specific way: in the consideration of color rendering based on the priority of high-efficiency light source, the use of high-efficiency lamps do not produce glare, and according to the appropriate use of conditions, the use of light Reasonable lighting.

8.1 Engineering Design Power Calculation

5.1.1 Since the sizes of the three watchtowers are basically the same, the estimated power of the first floor of the watchtowers is as follows:
Name Quantity Installation Location Power Consumption
1.T5 pipe 155 tile bottom 4.35KW
2. Wall washer 24 pairs of holes 0.67KW
3. LED light source 48 holes 0.05KW
4.400W metal halide lamp 32 tower base 12.8KW
5.150W sodium lamp 44 hall corridor 6.60KW
6.LED wall wash light 161 tile 5.80KW
7.9WLED aurora 16 tile angle eaves 0.14KW
Total power consumption Σ: 30.4KW
In order to achieve the green energy-saving lighting results, a large number of applications using the LED lamps, energy-saving than the traditional lamps and lanterns 35%, 4 hours a day lights, saving 22,000 kWh a year.

5.1.2 The north section of Fuxing Road (including an intersection of Foreigner Street and the northern section) uses the lamps and lanterns as follows:
Name Quantity Installation Location Power Consumption
1.T5 pipe 2350 tile bottom 65.8KW
2.T5 bracket wash wall 50 sets of church tile eaves bottom 1.4KW
3.9W LED aurora 4 sets roof 0.04KW
4.70W Metal Halide 6 sets of cultural tree 0.42KW
5.3WLED point light 20 sets of cultural center facade 0.06KW
Σ: 67.7KW
LED lamps use energy-saving about 10%, according to a day light four hours a year can save 10,000 kilowatts of energy.

5.1.3 ancient city gate
Name Quantity Installation Location Power Consumption
8 floodlights 400W front of the bridge inside 3.2KW
8 metal halide lamp 150W front door on both sides 1.2KW
12 70W cast light 70W central column 0.84KW
32 sets of T5 wall lamp 28W door top 0.896KW
Total power consumption 6.14KW

7.1.1 Design after the effect and the owner's opinion
This project to transform the night scene effect, the government and the public generally recognized, customs become Dali landmark lots, effectively stimulating the development of Dali City, the tourism economy and city visibility. The above is completed after some real scene:



Today's Dali ancient city, after re-planning and design, the night of the ancient city of Dali is exuding a beautiful ancient charm, every day in a new face to meet the arrival of Chinese and foreign tourists, some went to Dali's friends, but also Dali affectionately hailed as the East Geneva too!