Paper on the arch bridge - Education and Training Encyclopedia

Paper on the arch bridge

I. Landscape and LED light sources

Science needs analysis and understanding, landscape lighting needs appreciation and taste, and art needs profound intuition. Landscape lighting art can only produce vitality through light and illumination.

Lighting can change the appearance of the environment. Artistic lighting and colors constitute the dynamic and static landscape of light, sound and color, and also show the sketches, sculptures and fashions of landscape garden lights, embellishing the natural environment.

With the constant changes of people's ideology and lifestyle, great changes have taken place in lamps, light sources, materials, styles and design methods. When choosing a suitable light source, in addition to economic factors, we should also consider the overall light environment effect and the texture reliability of materials, and pay attention to the unity of natural environment and lighting. Landscape lighting skillfully uses LED light source to get rid of the traditional one-way design.

Second, the light environment of LED

In order to improve popularity and appreciation. LED has been more and more used in signal and sign lighting, traffic lights on roads, guidance lights and outline facade lighting in buildings, and multi-color lighting in city squares, gardens and pedestrian streets, all of which are produced by using ultra-high brightness LED. Its excellent energy-saving characteristics and long service life are favored by lighting designers and owners.

Features of LED light source:

1, good luminous uniformity, luminous angle 100o, luminous rate of 40 ~ 50lm/w.

2. The average life of light source is ≥ 65438+100000 hours, with no serious light attenuation, luminescence decay ≤ 10%, and energy consumption ≤24W.

3. The luminous wavelength should be consistent, and the luminous intensity of RGB should be able to change continuously.

Red light: λ = 630 nm ~ 650 nm

Yellow light: λ = 585 nm ~ 593 nm

Green light: λ = 525 nm ~ 528 nm

Blue light: λ = 467 nm ~ 473 nm

4, and can be programmed and controlled according to the overall requirements of the environment, resulting in the overall artistic landscape effect.

Third, color tone.

LED is soft in color and has a strong artistic effect in square and garden lighting. It not only provides people with comfortable visual conditions, but also reflects the landscape lighting style and increases the artistic aesthetic feeling through the coordination of various light colors, so as to achieve the space landscape deliberately created by the design intention of lamps and meet people's visual and aesthetic needs. Psychological needs.

Because the colors reflected in the night scenes in the garden light sketches give people a visual feeling, showing different colors, artistic appreciation and cultural levels. Red is a warm color, which reminds people of the sun, red flag and fire, and makes people feel warm, warm and enthusiastic; Yellow is a warm color, giving people a noble, bright and cheerful feeling; Green is the main theme of the forest, full of vitality, it reminds people of green mountains and green waters, beautiful spring, full of vitality, symbolizing youth, peace and health; Blue is an extremely cold color, forming an elegant and quiet atmosphere, reminiscent of blue sea and blue sky; White is a cool color, which often reminds people of ice, snow and cold, giving people an elegant, pure and peaceful feeling.

Four. The following are LED lighting cases in domestic scenic spots:

1, classical landscape type

Wuyuan Commercial Pedestrian Street in the Ming and Qing Dynasties uses the tall and prosperous firecracker landscape sculpture lamp modeling to set off the unique charm of ancient buildings in the Ming and Qing Dynasties, such as "blue brick small tile horse-headed wall, cloister hanging lattice window", show the epitome of emblem culture, and form a "celebration" lighting theme with red candles shining all over the people. From the design concept, the booming firecracker landscape lamp adopts the way of direct communication, red is the symbol of life and passion, and the lamp type is juxtaposed with sculpture works. Compared with Gao Fancha, it stimulates the retina, arouses people's consumption cultural taste in modern commercial streets, lets people enter the so-called "art palace", contacts the led lighting art, enhances the consumption concept of commercial department stores, and adds a lot of fun to the shopping crowd. The whole lighting design and layout create a quaint, elegant and extraordinary environment and a feeling of crossing time and space. Night lighting runs through the whole country like a red cultural belt, forming the reputation of "strange mountains and strange waters, chinese odyssey", with red lights and firecrackers celebrating the home, and the night market is full of lights in Wuyuan.

2. Natural ecotype

Bainiao Chaofeng Square, located on the lakeside of Baijia Lake, the first lighting cultural square in Nanjing, pursues a kind of natural and ecological warmth in design style, takes flying swallows, light and shadow and unique shapes as the design theme, pursues the natural ecological lighting environment of green forests, green spaces and green belts, and embodies the cultural taste of the square. Sun Island in Han, Ming and Qing Dynasties-symbolizing traditional culture; Dragon and phoenix wall, phoenix peony, eagle-a symbol of soaring; Girls and pigeons-symbols of hope and peace; The flying swallow landscape lamp is novel in shape and ingenious in conception. The lampshade is shaped like a flying swallow, and its light curve is lively, naive and touching. The pursuit of the whole design is the pursuit of design language, which cares about the feeling of space, light and shadow and color.

What the interface of natural environment space pursues is a dynamic and interpenetrating effect, which makes the spatial composition flow with each other and more easily shows its natural spatial character. The natural environment space is the fundamental foundation of outdoor design, and a reasonable and good space form naturally puts forward subconscious requirements for the configuration of lighting color and natural color in the space. What we should pay attention to is color, which must be the color of space and reflect the characteristics of space. Only in this way can they complement each other and become a whole.

All spaces, colors, etc. Reflected by light. Light embodies the characteristics of space, the taste of space and the emotion of space. During the day, natural light is directly irradiated by sunlight, and at night, a beautiful feeling is created through the configuration of light sources in the space. The whole square adopts Philips CDM-T and LED light source design, and emphasizes local lighting and accent lighting, light distribution, color temperature and color development, and proper distribution of light sources in space, so that the light has a sense of rhythm in space.

For outdoor lighting design, pay attention to the creative structure of the natural environment of the square. Space is only the light and shadow on the stage, and the natural environment is the protagonist.

3. Square hydrophilic type

The convention and exhibition center building in the north area of Zhuge Liang Square in Xiangfan City, Hubei Province is a major venue for festivals and conferences. From the appearance, the roof of the convention and exhibition center is wavy, like the brim of Zhu Gekongming. Here, a group of large-scale gorgeous courtyard lights, with a height of 6m, were specially designed for the square, which formed a unified pattern with the magnificent exhibition center building. This kind of lamp is similar to a sampan. Watching the river rush, far like a sail, soothes feelings in a broad field of vision.

The transparent lampshade adopts imported self-cleaning soft stretch film technology, which is at the leading level in China and is the first attempt in the field of lighting industry. Light sculpture film technology-light vertically irradiates the transparent film from the inside to produce a luminous sculpture sketch, forming internal light and external light. A red LED light source is built in the upper section of the lamp post as auxiliary light, creating a rich three-dimensional sense of light and shadow.

Light carving sketch

(1) Give play to the simple, beautiful and sail-like curved surface modeling;

(2) The vision of light diffusing and permeating space. This lamp is a profound metaphor, which shows the broad mind of Xiangfan people.

4. Modern chasing type

The south square of Zhuge Liang Square in Xiangfan is an ecological greening area, which is mainly landscaping, with an overall greening area of 70%. It is a good place for leisure, walking, romance and warmth. The lights here are not easy to be too bright, and the main line is warm color lighting. In a large area of lawn green space, the combination of the Rose Covenant and the light garden lamp of the century was installed, the anti-traditional alternating lighting technology was organically integrated with the modern numerical control soft light technology, and the optical luminescence was improved and controlled by using the special light emitter with ultra-narrow beam configuration, so that the light source had the characteristics of parallel and direct illumination. The ground 12 light, like a natural work, showed a particularly bright and dark light and shadow pattern, thus obtaining the three-dimensional sense of light, color and shadow. Ornamental flowers can be placed on the top of the lamp, which can keep good luck like Tianzhu during the day and show a shy and beautiful shadow like a girl at night.

A. Lighting-Different lighting technologies and lighting effects are ingeniously combined and changed, and light and shadow are interlaced to produce different atmospheres.

B. light source configuration-150 w high-pressure sodium lamp, with light efficiency as high as 97lx/w; The light color is golden yellow and warm; No limitation of light direction, strong disclosure; Luminous flux13500 lm; ; Color temperature 1900K. The upper part of the lamp body is a red or yellow LED light source.

C light and shadow contrast-light and shadow contrast is also the light and shadow contrast in space. The light and shadow effect produced by the contrast between light and shadow makes people and things in the space have a three-dimensional sense, and can also promote the overall balance of luminous flux and light intensity in the space, creating a comfortable light environment and light level effect.

D. Contrast between light and color-different types of light sources are used in the upper and lower spaces of the same lamp body, and different light colors appear at this time, which constitutes the contrast between light and color and shows colorful landscape artistic effects.

5, arch bridge ornamental type

(1), the arch main bridge is an important traffic intersection in the west of Haimen. In order to fully show the magnificent architectural features of this bridge, blue is the main tone and yellow is the auxiliary tone, creating a solemn, generous, United and upward atmosphere. On both sides of the bridge, LED landscape decorative light belts (LED light-emitting diodes) are used as the main facade lighting, forming a blue bright light belt, with dynamic light chasing effect and endless driving space. From the visual tendency, calm and refreshing, more in line with the climate characteristics of coastal areas, but also means honesty and selflessness.

Bridge pier lighting, in order to reflect the sense of stability at the bottom, uses wall-mounted projection lamp and yellow high-pressure sodium lamp as the light source, forming golden light effect, bright and soft visual tendency, setting off the surrounding atmosphere, and there is also a fable that the government is warm and friendly to the citizens. At the same time, the combination of blue and yellow is not contradictory in the same color, which constitutes a harmonious unity.

The outer side of the arch bridge cable on the main bridge is decorated with blue LED landscape, which outlines the outline, makes the whole main bridge unique in shape, and deepens the three-dimensional ornamental value with different illumination changes on each facade. At night, by using the special language of lighting, the architectural features of the grand shape of the main bridge are rebuilt, which has become the representative of Haimen's external image both during the day and at night. It's true: the day is a scene, and the night adds love.

(2) Technical parameters of high-pressure sodium lamp:

Model color temperature

(k) color reproduction

luminous flux

(lm) light efficiency

average life span

(hours) lamp current

(a) lamp voltage

㈤

150W 2000 23 16500 10 32000 1.8 100

(3) Technical parameters of LED landscape decorative light strip:

Model setting