Overpass bottom landscape construction and light environment optimization system

Abstract

The invention discloses an overpass bottom landscape construction and light environment optimization system, belongs to the technical field of landscape construction, and aims to solve the problems that the light environment below an overpass is poor, and plant growth is not facilitated. Comprising a light guide device, a planting pool is arranged at the bridge bottom, first plants are planted in the planting pool, bridge columns of the flyover are wrapped with climbing nylon nets, the climbing nylon nets are fixed to the bridge columns through a plurality of hoops, second plants climb on the climbing nylon nets, a metal net frame is arranged between the top ends of the adjacent bridge columns, a plurality of planting pots are arranged on the metal net frame, and the planting pots are arranged on the planting basins. A second plant is planted in the planting pot, a third plant is planted in the planting pot, two light guide devices form a group, two sunlight leading-in ends of each group of light guide devices are arranged on two sides of the flyover in the width direction respectively, sunlight leading-out ends of the light guide devices face the second plant and the third plant respectively, and the multiple groups of light guide devices are arranged at intervals in the length direction of the flyover. And the greening of the bridge bottom is beneficial to relieving pressure, recovering energy and improving the emotion and health level of people.

Description

Technical Field

[0001] The invention belongs to the technical field of landscape construction, and in particular relates to a landscape construction and light environment optimization system under an overpass. Background Art

[0002] With the development of cities, cars have become the main means of transportation and traffic flow has increased day by day. Overpasses have made great contributions to alleviating urban traffic pressure.

[0003] Greening is an indispensable factor in urban construction. It can not only purify the air, but also beautify the environment. On the basis of achieving ecological benefits, it places special emphasis on artistic effects and comprehensive functions.

[0004] Overpasses are built on the ground, occupying a large area of ​​land. If the overpasses are abandoned for urban greening, the overall beauty of the city and the local air quality will be lowered. However, overpasses often occupy an area with multiple lanes, and the lighting environment under the overpasses is poor, forming a negative landscape in the city and is not conducive to the growth of plants. Summary of the invention

[0005] The purpose of the present invention is to provide a system for constructing landscape under an overpass and optimizing the light environment, so as to solve the problem that the light environment under the overpass is poor and unfavorable for plant growth. The technical solution adopted by the present invention is as follows:

[0006] A system for constructing landscape and optimizing light environment at the bottom of an overpass, comprising a first plant, a second plant, a third plant and a light guide device. A planting pool is provided at the bottom of the overpass, in which the first plant is planted. A climbing nylon net is coated on the bridge columns of the overpass, and a plurality of hoops fix the climbing nylon net on the bridge columns, on which a second plant climbs. A metal grid is provided between the tops of adjacent bridge columns, on which a plurality of planting pots are provided, in which a third plant is planted. Two of the light guide devices form a group, and the two sunlight-introducing ends of each group of light guide devices are respectively arranged on both sides in the width direction of the overpass, and the sunlight-outlet ends of the light guide devices are respectively directed toward the second plant and the third plant, and a plurality of groups of the light guide devices are arranged at intervals along the length direction of the overpass.

[0007] Furthermore, the light guiding device includes a Fresnel lens and a plurality of reflective plates. The Fresnel lens is the sunlight introduction end of the light guiding device. The plurality of reflective plates are suspended at the bottom of the bridge deck of the overpass through support rods. The plurality of reflective plates refract the sunlight gathered by the Fresnel lens toward the second plant and the third plant.

[0008] Furthermore, the light guiding device includes a light collector, a light pipe and a diffuser. The light collector is the sunlight introduction end of the light guiding device, and the diffuser is the sunlight outlet end of the light guiding device. The light collector is connected to the diffuser through the light pipe, and the diffuser refracts the sunlight gathered by the light collector toward the second plant and the third plant.

[0009] Furthermore, the light guiding device includes a convex lens, an optical fiber and an illuminator. The convex lens is the sunlight introduction end of the light guiding device, and the illuminator is the sunlight output end of the light guiding device. The convex lens is connected to the illuminator through the optical fiber, and the illuminator refracts the sunlight gathered by the convex lens toward the second plant and the third plant.

[0010] Furthermore, the first plant is one or more of rose, dianthus, daylily, spatholobi, ficus pumila, jasmine, lilac, mint, jasmine, lemon, osmanthus, rosemary, gardenia, osmanthus fragrans, geranium, myrtle and clove.

[0011] Furthermore, the second plant is one or more of Parthenocissus tricuspidata, Parthenocissus quinquefolia, ivy, trumpet creeper, rose, morning glory, wisteria, ficus pumila and Akebia.

[0012] Furthermore, the third plant is one or more of Polygonum multiflorum, Festuca australis, Melissa officinalis, Chrysanthemum, Trachelospermum jasminoides and Glechoma longituba.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The first plant, the second plant and the third plant constitute the elements of the landscape construction under the overpass. The green plants used in the landscape construction have the functions of fixing carbon, absorbing harmful gases in automobile exhaust, releasing oxygen and negative oxygen ions, etc., combined with the optimization of the light environment, the improvement of the urban landscape, and the protection of the ecological environment, so that the present invention has the characteristics of multidisciplinary intersection, multi-technical integration, and multi-dimensional benefits. Specifically, in terms of society, the greening of the bottom of the bridge can improve the quality of life of residents and promote social harmony. At the same time, it provides a multifunctional public space, builds a cultural life place for citizens, and forms a continuous, staggered and spreading "green ribbon" in the city, which is conducive to improving the image and recognizability of the city. Secondly, in terms of psychology, the greening of the bottom of the bridge provides people with a comfortable and relaxing place, which helps to relieve stress, restore energy, and improve people's mood and health level. In addition, the greening of the bottom of the bridge also has a positive impact on the construction of urban ecology, enriches urban biodiversity, and enhances the ecological balance and water collection and storage functions of the city.

[0015] 2. The present invention increases the plant density in places with high pollution concentration to improve the purification capacity, and selects shade-tolerant plants in places with sufficient light to optimize the landscape effect. According to the planting area, it is specifically divided into four types: the planting pool is an area with medium pollution density, the bridge column is an area with high pollution density, and the metal grid is an area with low pollution density. According to research, when the first plant is planted according to the above type, the planting pool can have a stronger ability to purify the air, release oxygen and absorb smoke. When the second plant is planted according to the above type, the second plant has both carbon fixation and oxygen release capacity, dust retention and air pollution resistance. When the third plant is planted according to the above type, herbaceous plants are mainly used, which have certain shade tolerance, landscape visual effect and healing effect. The present invention selects corresponding plant species according to the local climate, and transforms the negative space under the bridge into a positive and healthy public space by optimizing the configuration of light and plant species, so that the constantly consumed physical and mental resources and abilities of the people in it can be restored and renewed, so that they can maintain a good mental state, thereby maintaining the physical and mental health of the users. The introduction of natural light under the bridge and the improvement of the light environment can help to improve the negative visual effect of the space under the bridge and improve the quality of the urban landscape. At the same time, it can promote the growth of green plants under the bridge. Greening the bridge bottom helps to purify the air, relieve the stress of pedestrians and drivers, restore energy, and improve people's mood and health level. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the landscape construction layout along the cross-section direction of the overpass according to the present invention;

[0017] Figure 2 It is a schematic diagram of the landscape construction layout along the length direction of the overpass of the present invention;

[0018] Figure 3 is a schematic diagram of the arrangement of a light guide device according to Embodiment 1 of the present invention;

[0019] Figure 4 is an axonometric diagram of the light guide arrangement of the first embodiment of the present invention;

[0020] Figure 5 This is the schematic diagram of the CFD distribution of the axonometric wind field of the overpass;

[0021] Figure 6 This is a schematic diagram of the CFD distribution of the cross-section wind field of the overpass;

[0022] Figure 7 This is the CFD axonometric distribution diagram of the automobile exhaust concentration field around the overpass;

[0023] Figure 8 This is the axonometric distribution diagram of the automobile exhaust concentration field around the overpass from another perspective of CFD;

[0024] Fig. 9 It is the CFD cross-sectional distribution diagram of the automobile exhaust concentration field around the overpass;

[0025] Fig.10 is a schematic diagram of the arrangement of a light guide device according to a second embodiment of the present invention;

[0026] Fig.11 is an axonometric diagram of the light guide arrangement of the second embodiment of the present invention;

[0027] Fig.12 is a schematic diagram of the arrangement of a light guide device according to a third embodiment of the present invention;

[0028] Fig.13 It is an axonometric diagram of the light guide arrangement of the third embodiment of the present invention.

[0029] In the figure, 1. planting pool, 2. first plant, 3. climbing nylon net, 4. hoop, 5. second plant, 6. metal grid, 7. third plant, 8. planting pot, 9. Fresnel lens, 10. support rod, 11. reflector, 12. light collector, 13. light guide, 14. diffuser, 15. convex lens, 16. optical fiber, 17. illuminator. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0031] The connection mentioned in the present invention is divided into fixed connection and detachable connection. The fixed connection is a non-detachable connection including but not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection. The detachable connection includes but not limited to conventional detachable methods such as bolt connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is assumed that at least one connection method can be found in the existing connection methods to achieve the function, and those skilled in the art can choose according to their needs. For example: welding connection is selected for fixed connection, and bolt connection is selected for detachable connection.

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings. The following embodiments are provided to explain the present invention, but the present invention is not limited to the following embodiments.

[0033] Embodiment 1: Figures 1 to 9As shown, a system for constructing landscape and optimizing light environment at the bottom of an overpass is provided. The overpass includes a bridge deck and bridge columns, including a first plant 2, a second plant 5, a third plant 7 and a light guide device. A planting pool 1 is provided at the bottom of the overpass, in which the first plant 2 is planted. A climbing nylon net 3 is covered on the bridge column of the overpass, and a plurality of clamps 4 fix the climbing nylon net 3 on the bridge column. A second plant 5 is climbing on the climbing nylon net 3. A metal grid 6 is provided between the tops of adjacent bridge columns, and a plurality of planting pots 8 are provided on the metal grid 6. A third plant 7 is planted in the planting pots 8. Two of the light guide devices form a group, and the two sunlight-introducing ends of each group of light guide devices are respectively arranged on both sides of the width direction of the overpass, and the sunlight-outlet ends of the light guide devices are respectively facing the second plant 5 and the third plant 7, and a plurality of groups of the light guide devices are arranged at intervals along the length direction of the overpass.

[0034] The first plant 2, the second plant 5 and the third plant 7 constitute the elements of the landscape construction under the overpass. The green plants used in the landscape construction have the functions of fixing carbon, absorbing harmful gases in automobile exhaust, releasing oxygen and negative oxygen ions, etc., combined with the optimization of the light environment, the improvement of the urban landscape, and the protection of the ecological environment, so that the present invention has the characteristics of multidisciplinary intersection, multi-technical integration, and multi-dimensional benefits. Specifically, in terms of society, the greening of the bottom of the bridge can improve the quality of life of residents and promote social harmony. At the same time, it provides a multifunctional public space, builds a cultural life place for citizens, and forms a continuous, staggered and spreading "green ribbon" in the city, which is conducive to improving the image and recognizability of the city. Secondly, in terms of psychology, the greening of the bottom of the bridge provides people with a comfortable and relaxing place, which helps to relieve stress, restore energy, and improve people's mood and health level. In addition, the greening of the bottom of the bridge also has a positive impact on the construction of urban ecology, enriches urban biodiversity, and enhances the ecological balance and water collection and storage functions of the city.

[0035] After the technical solution of the present invention is implemented, the environment under the overpass is improved in the following aspects:

[0036] Lighting improvement: Through the light-guiding device, the light intensity at the bottom of the overpass is improved to meet the growth needs of plants.

[0037] Improved air humidity: increased by 15% to 35%.

[0038] Increased oxygen supply: 35% to 65%.

[0039] Air purification effect improved: 35% to 300% (local enhancement to overall enhancement).

[0040] The present invention proposes an organic combination mode of "lighting-greening" under the overpass, which receives sunlight through a light-guiding device and transmits it to the lower part of the bridge deck, thereby improving the light environment under the bridge and providing the necessary light for plant growth for the landscape construction under the bridge. At the same time, the ecological function of plants is used to improve air quality, achieving multiple goals of ecological friendliness, visual beauty, health recovery, energy conservation and environmental protection, and promoting the transformation of the gray and negative space under the bridge into a healthy and citizen-friendly public space.

[0041] The light guiding device includes a Fresnel lens 9 and a plurality of reflectors 11. The Fresnel lens 9 is the sunlight introduction end of the light guiding device. The plurality of reflectors 11 are suspended at the bottom of the bridge deck of the overpass through support rods 10. The plurality of reflectors 11 refract the sunlight gathered by the Fresnel lens 9 toward the second plant 5 and the third plant 7.

[0042] The first plant 2 is one or more of rose, dianthus, daylily, spatholobi, ficus pumila, jasmine, lilac, mint, jasmine, lemon, osmanthus, rosemary, gardenia, osmanthus fragrans, geranium, myrtle and clove.

[0043] The second plant 5 is one or more of Parthenocissus tricuspidata, Parthenocissus quinquefolia, ivy, trumpet creeper, rose, morning glory, wisteria, ficus pumila and Akebia.

[0044] The third plant 7 is one or more of Polygonum multiflorum, Festuca australis, Lemon balm, Chrysanthemum, Trachelospermum jasminoides and Glechoma longituba.

[0045] The wind field and vehicle exhaust emissions around the overpass were evaluated using computational fluid dynamics (CFD) software. The eddy viscosity coefficient was solved using a realizable turbulence model, and the carbon dioxide distribution was simulated using a component transport model. The computational domain inlet was set as a velocity inlet boundary condition, whose value changes in a power law with height, thus conforming to the atmospheric flow. Figure 5 The wind field distribution around the overpass is shown in Figure 1. When the current stable atmospheric flow field flows through the overpass, it will be significantly separated, resulting in a lower speed above the overpass and under the bridge. Figure 6 This can be more clearly observed in the wind field diagram shown.

[0046] Figure 7 and Figure 8 The concentration field distribution around the overpass is shown. The results show that the pollutants on the overpass diffuse in a cone shape from the rear of the car to the rear and gradually diffuse downward, while the pollutants near the vehicles under the bridge diffuse horizontally. Fig. 9 This further shows that due to the diffusion of automobile exhaust, pollutants accumulate in the space under the bridge. In the figure: the values ​​can be distinguished by color, the speed is 0-6.9m / s, and the molar concentration of carbon dioxide is 0-0.02mol / m 3

[0047] The present invention increases the plant density in places with high pollution concentration to improve the purification capacity, and selects shade-tolerant plants in places with sufficient light to optimize the landscape effect. According to the planting area, it is specifically divided into four types: the planting pool 1 is a medium pollution density area, the bridge column is a high pollution density area, and the metal grid 6 is a low pollution density area. According to research, when the first plant 2 is planted according to the above type, the planting pool 1 can have a strong ability to purify the air, release oxygen and absorb smoke. When the second plant 5 is planted according to the above type, the second plant 5 has both carbon fixation and oxygen release capacity, dust retention and anti-atmospheric pollution capacity. When the third plant 7 is planted according to the above type, it is mainly herbaceous plants, which have certain shade tolerance, landscape visual effect and healing effect. The present invention selects corresponding plant species according to the local climate, and transforms the negative space under the bridge into a positive and healthy public space by optimizing the configuration of light and plant species, so that the constantly consumed physical and mental resources and abilities of the people in it can be restored and renewed, so that they can maintain a good mental state, thereby maintaining the physical and mental health of the users. The introduction of natural light under the bridge and the improvement of the light environment can help to improve the negative visual effect of the space under the bridge and improve the quality of the urban landscape. At the same time, it can promote the growth of green plants under the bridge. Greening the bridge bottom helps to purify the air, relieve the stress of pedestrians and drivers, restore energy, and improve people's mood and health level.

[0048] Embodiment 2: Fig.10 , Fig.11 As shown, the difference between this embodiment and the first embodiment is that the light guiding device includes a light collector 12, a light pipe 13 and a diffuser 14. The light collector 12 is the sunlight introduction end of the light guiding device, and the diffuser 14 is the sunlight outlet end of the light guiding device. The light collector 12 is connected to the diffuser 14 through the light pipe 13, and the diffuser 14 refracts the sunlight gathered by the light collector 12 toward the second plant 5 and the third plant 7.

[0049] Embodiment 3: Fig.12 , Fig.13 As shown, the difference between this embodiment and the first embodiment is that the light guiding device includes a convex lens 15, an optical fiber 16 and an illuminator 17. The convex lens 15 is the sunlight introduction end of the light guiding device, and the illuminator 17 is the sunlight output end of the light guiding device. The convex lens 15 is connected to the illuminator 17 through the optical fiber 16. The illuminator 17 refracts the sunlight gathered by the convex lens 15 toward the second plant 5 and the third plant 7.

[0050] The above embodiments are merely exemplary descriptions of the present invention and do not limit its protection scope. Those skilled in the art may also make partial changes thereto, which are within the protection scope of the present invention as long as they do not exceed the spirit of the present invention.

Claims

1. A system for constructing landscape under an overpass and optimizing light environment, characterized in that: The invention comprises a first plant (2), a second plant (5), a third plant (7) and a light guide device. A planting pool (1) is provided at the bottom of the overpass. The first plant (2) is planted in the planting pool (1). The bridge columns of the overpass are covered with a climbing nylon net (3). A plurality of hoops (4) fix the climbing nylon net (3) on the bridge columns. A second plant (5) climbs on the climbing nylon net (3). A metal grid (6) is provided between the tops of adjacent bridge columns. A plurality of planting pots (8) are provided on the metal grid (6). A third plant (7) is planted in the planting pots (8). Two light guide devices form a group. The two sunlight-introducing ends of each group of light guide devices are respectively arranged on both sides in the width direction of the overpass. The sunlight-outlet ends of the light guide devices are respectively directed toward the second plant (5) and the third plant (7). The plurality of groups of light guide devices are arranged at intervals along the length direction of the overpass.

2. The system for constructing landscape and optimizing light environment under an overpass according to claim 1, characterized in that: The light guide device comprises a Fresnel lens (9) and a plurality of reflective plates (11); the Fresnel lens (9) is a sunlight introduction end of the light guide device; the plurality of reflective plates (11) are suspended at the bottom of the bridge deck of the overpass via a support rod (10); the plurality of reflective plates (11) refract sunlight gathered by the Fresnel lens (9) toward the second plant (5) and the third plant (7).

3. The system for constructing landscape and optimizing light environment under an overpass according to claim 1, characterized in that: The light guide device comprises a light collector (12), a light pipe (13) and a diffuser (14); the light collector (12) is a sunlight introduction end of the light guide device, and the diffuser (14) is a sunlight outlet end of the light guide device; the light collector (12) is connected to the diffuser (14) via the light pipe (13); and the diffuser (14) refracts the sunlight collected by the light collector (12) toward the second plant (5) and the third plant (7).

4. The system for constructing landscape and optimizing light environment under an overpass according to claim 1, characterized in that: The light guide device comprises a convex lens (15), an optical fiber (16) and an illuminator (17); the convex lens (15) is a sunlight introduction end of the light guide device, the illuminator (17) is a sunlight extraction end of the light guide device, the convex lens (15) is connected to the illuminator (17) via the optical fiber (16), and the illuminator (17) refracts the sunlight gathered by the convex lens (15) toward the second plant (5) and the third plant (7).

5. A system for constructing landscape and optimizing light environment under an overpass according to any one of claims 2 to 4, characterized in that: The first plant (2) is one or more of rose, dianthus, daylily, spatholobi, ficus pumila, jasmine, lilac, mint, jasmine, lemon, osmanthus, rosemary, gardenia, osmanthus fragrans, geranium, myrtle and clove.

6. The system for constructing landscape and optimizing light environment under an overpass according to claim 5, characterized in that: The second plant (5) is one or more of Parthenocissus tricuspidata, Parthenocissus quinquefolia, Ivy, Trumpet creeper, Rosa rugosa, Morning glory, Wisteria sinensis, Ficus pumila and Akebia affine.

7. The system for constructing landscape and optimizing light environment under an overpass according to claim 6, characterized in that: The third plant (7) is one or more of Polygonum multiflorum, Festuca australis, Lemon balm, Chrysanthemum, Trachelospermum jasminoides and Glechoma longituba.

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