A system for landscape construction and light environment optimization under overpasses

Abstract

A system for landscape construction and light environment optimization under overpasses, belonging to the field of landscape construction technology, addresses the problem of poor lighting conditions under overpasses, which is detrimental to plant growth. The system includes light guiding devices, planting beds under the bridge containing a first type of plant, and climbing nylon netting covering the bridge pillars. Several clamps secure the netting to the pillars, and a second type of plant climbs on the netting. A metal mesh frame is installed between the tops of adjacent pillars, with several planting pots containing a third type of plant. Two light guiding devices form a group, with each group's two sunlight-introducing ends positioned on opposite sides of the overpass's width. The sunlight-exiting ends of the light guiding devices face the second and third plants, respectively. Several groups of light guiding devices are arranged at intervals along the length of the overpass. Greening under the bridge helps relieve stress, restore energy, and improve people's mood and health.

Description

Technical Field

[0001] This invention belongs to the field of landscape construction technology, and in particular relates to a system for landscape construction and light environment optimization under overpasses. Background Technology

[0002] With urban development, cars have become the main means of transportation, and traffic flow is increasing day by day. Overpasses have made a great contribution to alleviating urban traffic pressure.

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

[0004] Overpasses are built on the ground, occupying a large area of ​​land. If urban greening projects exclude overpasses, the overall aesthetics of the city and local air quality will be compromised. However, overpasses often occupy the area of ​​multiple lanes, resulting in poor lighting conditions underneath, creating a negative urban landscape, and hindering plant growth. Summary of the Invention

[0005] The purpose of this invention is to provide a system for landscape construction and light environment optimization under overpasses, to solve the problem of poor lighting conditions under overpasses, which is detrimental to plant growth. The technical solution adopted by this invention is as follows:

[0006] A system for constructing a landscape and optimizing the light environment under an overpass includes a first plant, a second plant, a third plant, and light guide devices. The underpass is equipped with planting beds containing the first plant. The bridge pillars are covered with climbing nylon netting, which is secured to the pillars by several clamps. A second plant climbs on the nylon netting. A metal mesh frame is positioned between the tops of adjacent pillars, with several planting pots containing the third plant. Two light guide devices form a group, with each group's two sunlight-introducing ends positioned on opposite sides of the overpass's width. The sunlight-exiting ends of the light guide devices face the second and third plants, respectively. Several groups of light guide devices are arranged at intervals along the length of the overpass.

[0007] The first plant is one or more of the following: rose, carnation, daylily, chicken dung vine, creeping fig, winter jasmine, mint, jasmine, lemon, osmanthus, rosemary, gardenia, Murraya paniculata, geranium, myrtle, and clove;

[0008] The second plant is one or more of the following: Virginia creeper, Parthenocissus quinquefolia, ivy, trumpet creeper, rose, morning glory, wisteria, creeping fig, and akebia quinata;

[0009] The third plant is one or more of the following: Polygonum multiflorum, Fescue sibiricum, Lemon balm, Chrysanthemum, Trachelospermum jasminoides, and Cordyceps militaris.

[0010] Furthermore, the light guiding device includes a Fresnel lens and several reflectors. The Fresnel lens is the sunlight-introducing end of the light guiding device, and the several reflectors are suspended at the bottom of the overpass by support rods. The several reflectors refract the sunlight gathered by the Fresnel lens toward the second and third plants.

[0011] Furthermore, the light guiding device includes a light collector, a light guide tube, and a diffuser. The light collector is the sunlight input end of the light guiding device, and the diffuser is the sunlight output end of the light guiding device. The light collector is connected to the diffuser through the light guide tube, and the diffuser refracts the sunlight gathered by the light collector toward the second and third plants.

[0012] Furthermore, the light guiding device includes a convex lens, an optical fiber, and an illuminator. The convex lens is the sunlight input 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 focused by the convex lens toward the second and third plants.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The first, second, and third types of plants constitute the elements of the landscape construction under the overpass. The greenery used in the landscape construction has functions such as carbon sequestration, absorption of harmful gases from vehicle exhaust, and release of oxygen and negative oxygen ions. Combined with the optimization of the light environment, improvement of the urban landscape, and ecological environmental protection, this invention has the characteristics of multidisciplinary integration, multi-technology integration, and multi-dimensional benefits. Specifically, in terms of society, under-bridge greening can improve the quality of life of residents, promote social harmony, and provide multifunctional public spaces, creating venues for citizens' cultural life. It forms a continuous and spreading "green ribbon" in the city, which is conducive to enhancing the city's image and recognizability. Secondly, in terms of psychology, under-bridge greening provides people with comfortable and relaxing places, helping to relieve stress, restore energy, and improve people's mood and health. In addition, under-bridge greening also has a positive impact on urban ecological construction, enriching urban biodiversity and enhancing the city's ecological balance and water collection and storage functions.

[0015] 2. This invention increases plant density in areas with high pollution concentrations to enhance purification capacity, and selects shade-tolerant plants in areas with ample sunlight to optimize the landscape effect. Based on the specific planting area, four types are defined: planting beds for areas with medium pollution density, bridge pillars for areas with high pollution density, and metal mesh frames for areas with low pollution density. Research indicates that when the first type of plant is planted according to the above-mentioned species, the planting beds exhibit strong air purification, oxygen release, and smoke and dust adsorption capabilities. When the second type of plant is planted according to the above-mentioned species, it combines carbon sequestration and oxygen release capabilities with dust retention and air pollution resistance. When the third type of plant is planted according to the above-mentioned species, it primarily consists of herbaceous plants, which also possess certain shade tolerance, aesthetic appeal, and restorative effects. By selecting appropriate plant species based on the local climate, this invention transforms the negative space under the bridge into a positive and healthy public space through optimized lighting and plant species configuration. This allows the physical and mental resources and abilities of those within the space to be restored and renewed, maintaining a good psychological state and thus sustaining the users' physical and mental health. The introduction of natural light and the improvement of the lighting environment under the bridge help to improve the negative visual effects of the space, enhance the quality of the urban landscape, and promote the growth of green plants. Greening under the bridge also helps to purify the air, relieve the stress of pedestrians and drivers, restore their energy, and improve people's mood and health. Attached Figure Description

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

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

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

[0019] Figure 4 This is an isometric view of the arrangement of the light guide device according to Embodiment 1 of the present invention;

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

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

[0022] Figure 7 This is a CFD isometric distribution map of the vehicle exhaust concentration field around the overpass;

[0023] Figure 8 This is an isometric distribution map of the vehicle exhaust concentration field around the overpass from another CFD perspective;

[0024] Figure 9 This is a CFD cross-sectional distribution map of the vehicle exhaust concentration field around the overpass;

[0025] Figure 10 This is a schematic diagram of the arrangement of the light guide device according to Embodiment 2 of the present invention;

[0026] Figure 11 This is an isometric view of the arrangement of the light guide device according to Embodiment 2 of the present invention;

[0027] Figure 12 This is a schematic diagram of the arrangement of the light guide device according to Embodiment 3 of the present invention;

[0028] Figure 13 This is an isometric view of the arrangement of the light guide device according to Embodiment 3 of the present invention.

[0029] In the diagram, 1. Planting bed, 2. First plant, 3. Climbing nylon net, 4. Hoop, 5. Second plant, 6. Metal mesh frame, 7. Third plant, 8. Planting pot, 9. Fresnel lens, 10. Support pole, 11. Reflector, 12. Light collector, 13. Light guide tube, 14. Diffuser, 15. Convex lens, 16. Optical fiber, 17. Illuminator. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0031] The connections mentioned in this invention are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as bolted connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can be found to achieve this function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a bolted connection can be chosen for detachable connections.

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

[0033] Example 1: As Figures 1-9As shown, a landscape construction and light environment optimization system for underpasses is disclosed. The underpass includes a bridge deck and bridge pillars, and includes a first plant 2, a second plant 5, a third plant 7, and light guide devices. Planting beds 1 are provided under the underpass, and the first plant 2 is planted in the planting beds 1. The bridge pillars of the underpass are covered with climbing nylon netting 3, and several clamps 4 fix the climbing nylon netting 3 to the bridge pillars. The second plant 5 climbs on the climbing nylon netting 3. A metal mesh frame 6 is provided between the tops of adjacent bridge pillars, and several planting pots 8 are provided on the metal mesh frame 6. The third plant 7 is planted in the planting pots 8. Two light guide devices are grouped together. The two sunlight-introducing ends of each group of light guide devices are respectively set on both sides of the width direction of the underpass. The sunlight-exiting ends of the light guide devices are respectively facing the second plant 5 and the third plant 7. Several groups of light guide devices are arranged at intervals along the length direction of the underpass.

[0034] Plant 2 (first plant), plant 5 (second plant), and plant 7 (third plant) constitute the elements of the landscape construction under the overpass. The greenery used in this landscape construction has functions such as carbon sequestration, absorption of harmful gases from vehicle exhaust, and release of oxygen and negative ions. Combined with the optimization of the light environment, improvement of the urban landscape, and ecological environmental protection, this invention features multidisciplinary integration, multi-technology integration, and multi-dimensional benefits. Specifically, from a social perspective, under-bridge greening can improve residents' quality of life, promote social harmony, and provide multifunctional public spaces, creating venues for citizens' cultural life. It forms a continuous, interwoven, and spreading "green ribbon" in the city, which helps enhance the city's image and recognizability. Secondly, from a psychological perspective, under-bridge greening provides people with comfortable and relaxing places, helping to relieve stress, restore energy, and improve people's mood and health. Furthermore, under-bridge greening also has a positive impact on urban ecological construction, enriching urban biodiversity and enhancing the city's ecological balance and water collection and storage functions.

[0035] After implementing the technical solution of this invention, the environmental improvement under the overpass is achieved in the following aspects:

[0036] Improved lighting: The light intensity under the overpass is increased through the light guiding device, which meets the needs of plant growth.

[0037] Air humidity improved: increased by 15% to 35%.

[0038] Oxygen supply increased by 35% to 65%.

[0039] Air purification effect improved by 35% to 300% (from localized enhancement to overall enhancement).

[0040] This invention proposes an organic combination of "lighting and greening" under overpasses. By using a light guide device to receive sunlight and transmit it to the underside of the bridge, the light environment under the bridge is improved, and the necessary light for plant growth is provided for the landscape construction under the bridge. At the same time, the ecological functions of plants are used to improve air quality, achieving multiple goals of eco-friendliness, visual appeal, health restoration, and energy conservation and environmental protection, thus transforming 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 several reflectors 11. The Fresnel lens 9 is the sunlight input end of the light guiding device. The several reflectors 11 are suspended at the bottom of the overpass by support rods 10. The several 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 the following: rose, carnation, daylily, chicken dung vine, creeping fig, winter jasmine, mint, jasmine, lemon, osmanthus, rosemary, gardenia, Murraya paniculata, geranium, myrtle, and clove.

[0043] The second plant 5 is one or more of the following: Virginia creeper, Parthenocissus quinquefolia, Ivy, Trumpet creeper, Rose, Morning glory, Wisteria, Ficus pumila, and Akebia quinata.

[0044] The third plant 7 is one or more of the following: Polygonum multiflorum, Fescue sibiricum, Lemon balm, Chrysanthemum, Trachelospermum jasminoides, and Cordyceps militaris.

[0045] The wind field and vehicle emissions around the overpass were evaluated using computational fluid dynamics (CFD) software. A realizable turbulence model was used to solve for the eddy viscosity coefficient, and a component transport model was used to simulate carbon dioxide distribution. The computational domain inlet was set as a velocity inlet boundary condition, whose value varied power-lawly with height, thus conforming to atmospheric flow conditions. Figure 5 This shows the wind field distribution around the overpass. The current stable atmospheric flow undergoes significant separation as it passes over the overpass, resulting in lower air velocity in the area above and below the overpass. This is... Figure 6 This can be observed more clearly in the wind field map shown.

[0046] Figure 7 and Figure 8 The concentration field distribution around the overpass was shown. The results indicate that pollutants on the overpass diffuse in a cone shape from the rear of the vehicles and gradually spread downwards, while pollutants near vehicles under the overpass diffuse horizontally. Figure 9 This further demonstrates that the diffusion of vehicle exhaust led to the accumulation of pollutants in the space under the bridge. In the figure: colors indicate numerical values, with velocities ranging from 0 to 6.9 m / s and carbon dioxide molar concentrations from 0 to 0.02 mol / m³. 3

[0047] This invention increases plant density in areas with high pollution concentrations to enhance purification capacity, and selects shade-tolerant plants in areas with ample sunlight to optimize the landscape effect. Based on the specific planting areas, four types are defined: planting beds 1 represent areas with medium pollution density, bridge pillars represent areas with high pollution density, and metal mesh frames 6 represent areas with low pollution density. Research indicates that when the first type of plant 2 is planted according to the aforementioned species, planting beds 1 have a strong ability to purify air, release oxygen, and absorb smoke and dust. When the second type of plant 5 is planted according to the aforementioned species, it also possesses carbon sequestration and oxygen release capabilities, dust retention, and resistance to air pollution. When the third type of plant 7 is planted according to the aforementioned species, it is mainly composed of herbaceous plants, which also offer some shade tolerance, visual appeal, and restorative effects. By selecting appropriate plant species based on the local climate, this invention transforms the negative space under the bridge into a positive and healthy public space through optimized lighting and plant species configuration. This allows the physical and mental resources and abilities of those within the space to be restored and renewed, maintaining a good psychological state and thus sustaining the users' physical and mental health. The introduction of natural light and the improvement of the lighting environment under the bridge help to improve the negative visual effects of the space, enhance the quality of the urban landscape, and promote the growth of green plants. Greening under the bridge also helps to purify the air, relieve the stress of pedestrians and drivers, restore their energy, and improve people's mood and health.

[0048] Example 2: Figure 10 , Figure 11 As shown, the difference between this embodiment and Embodiment 1 is that the light guiding device includes a light collector 12, a light guide tube 13, and a diffuser 14. The light collector 12 is the sunlight input end of the light guiding device, and the diffuser 14 is the sunlight output end of the light guiding device. The light collector 12 is connected to the diffuser 14 through the light guide tube 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] Example 3: Figure 12 , Figure 13 As shown, the difference between this embodiment and Embodiment 1 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 input 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, and 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 illustrative examples of the present invention and do not limit its scope of protection. Those skilled in the art can make partial changes to them, as long as they do not exceed the spirit and essence of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A system for landscape construction and light environment optimization under overpasses, characterized in that: The system includes a first plant (2), a second plant (5), a third plant (7), and a light guide device. The underside of the overpass is provided with a planting pool (1), in which the first plant (2) is planted. The bridge pillars of the overpass are covered with climbing nylon netting (3), and several clamps (4) fix the climbing nylon netting (3) to the bridge pillars. The second plant (5) climbs on the climbing nylon netting (3). A metal mesh frame (6) is provided between the tops of adjacent bridge pillars. Several planting pots (8) are provided on the metal mesh frame (6), and the third plant (7) is planted in the planting pots (8). Two light guide devices are grouped together. The two sunlight-introducing ends of each group of light guide devices are respectively set on both sides of the width direction of the overpass. The sunlight-out ends of the light guide devices are respectively facing the second plant (5) and the third plant (7). Several groups of light guide devices are arranged at intervals along the length direction of the overpass. The first plant (2) is one or more of the following: rose, carnation, daylily, chicken dung vine, creeping fig, winter jasmine, mint, jasmine, lemon, osmanthus, rosemary, gardenia, Murraya paniculata, geranium, myrtle and clove; The second plant (5) is one or more of the following: Virginia creeper, Virginia creeper, ivy, trumpet creeper, rose, morning glory, wisteria, creeping fig, and akebia quinata; The third plant (7) is one or more of the following: Polygonum multiflorum, Fescue scabra, Lemon balm, Chrysanthemum, Trachelospermum jasminoides and Cordyceps militaris.

2. The overpass under-slope landscape construction and light environment optimization system according to claim 1, characterized in that: The light guiding device includes a Fresnel lens (9) and several reflectors (11). The Fresnel lens (9) is the sunlight-introducing end of the light guiding device. Several reflectors (11) are suspended at the bottom of the overpass by a support rod (10). Several reflectors (11) refract the sunlight gathered by the Fresnel lens (9) toward the second plant (5) and the third plant (7).

3. The overpass under-slope landscape construction and light environment optimization system according to claim 1, characterized in that: The light guiding device includes a light collector (12), a light guide tube (13), and a diffuser (14). The light collector (12) is the sunlight input end of the light guiding device, and the diffuser (14) is the sunlight output end of the light guiding device. The light collector (12) is connected to the diffuser (14) through the light guide tube (13). The diffuser (14) refracts the sunlight gathered by the light collector (12) toward the second plant (5) and the third plant (7).

4. The overpass under-slope landscape construction and light environment optimization system according to claim 1, characterized in 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 input 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).

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