CN108952022A - Inclined roof greening system - Google Patents

Abstract

The present invention relates to a kind of inclined roof greening systems, belong to green building technique field.The present invention includes roof construction layer, waterproof stopping area, water-storage-drainage layer, dentation vegetation structure layer, hypothallus, water collecting and drainage system, it sets up defences water resistance root layer on the roof construction layer upper berth, waterproof stopping area is equipped with water-storage-drainage layer, water-storage-drainage layer is equipped with dentation vegetation structure layer, dentation vegetation structure layer includes drainage layer, earth-retaining furrow bank, vegetation ditch, hypothallus is equipped in vegetation ditch, roof construction layer low side is equipped with collecting gutter, collecting gutter connects header tank by aqueduct, it is equipped with feed pump in header tank, water is delivered to by atomizer by feed pipe and is poured.The present invention can reduce Rainfall runoff, improve air quality, dust control and noise absorption, rainwater is recycled, increase urban green coverage rate, abundant urban landscape level, can effectively solve the Greening problem of pitched roof.

Description

Slope roof greening system

technical field

The invention belongs to the technical field of green buildings, in particular to a slope roof greening system.

Background technique

In recent decades, the rapid development of industrialization and the acceleration of urbanization have not only brought negative impacts on the natural environment, but also caused the living environment in cities to become worse and worse. Roof gardens can cool down and insulate, beautify the environment, and purify the air. They are an effective means to improve the urban living environment and adjust the urban microclimate. The development and research of green roofs is becoming a hot topic in society. The research and practice of green roofs in my country has also been paid more and more attention.

With the acceleration of urbanization, the area of urban impermeable underlying surfaces (roofs, roads, squares, parking spaces, etc.) continues to expand, resulting in increased surface runoff and faster runoff speed. The rainfall retention capacity in urban areas has been greatly weakened, which has brought huge pressure to the urban drainage system, resulting in frequent floods in major cities in recent years, which have had a serious impact on people's lives, especially in the old cities that mostly use combined drainage systems. It also affects the stability of animal and plant habitats. As an important part of the urban impermeable underlying surface, the roof plays a very important role in the rainfall runoff, and occupies a relatively large area in the city. For example, the proportion of the roof of the commercial area to the total area of the urban impervious underlying surface Up to 40-50%; and because the corrosion products of the roofing material itself are washed away by rainwater, the runoff from the roof contains a large amount of pollutants. Green roofs are a special type of land cover in urban areas. Compared with impermeable underlying surfaces, green roofs have many ecological functions. Many foreign urban storm management concepts regard it as a potential way to alleviate urban rainstorms and control surface sources. effective way to pollute.

Therefore, at the same time of urban planning and construction, people have adopted various methods to reduce the pollution to the environment, thereby adjusting the ecological environment and beautifying the urban appearance. In cities with tight land use, it is a very effective means to alleviate environmental problems and adjust the urban microclimate through green roofs, and it has gradually attracted people's attention and attention. Green roofs have a long history of development. In recent years, in the United States and most European countries, the practice of roof greening has become more and more popular, and its engineering technology has become more and more mature.

Roof greening enriches the green space of the city, makes the green space in the city change from flat to three-dimensional, and relieves the tension of urban land. As the fifth facade of the city, it has gradually attracted people's attention.

Facing the severe climate crisis caused by global warming, large green roofs provide a natural air conditioning system for cities. In addition to beautifying the urban environment, green roofs have more practical functions in cities, including increasing the service life of roofs, absorbing rainwater, sound insulation and noise reduction, filtering rainwater pollutants and heavy metals, increasing wildlife habitats, and greatly Reduce heat conduction effect, etc. The survey shows that the thermal insulation performance of traditional asphalt roofs is extremely poor, and the daytime temperature in summer can exceed 65°C, which accelerates the urban heat island effect. In winter, it is cold and has no insulation, which is not conducive to environmental protection. In contrast, the cooling and heating costs of buildings under green roofs can be reduced by 20% due to the fact that soil and vegetation can greatly moderate temperature changes. Moreover, a good roof greening project can reduce economic costs while regulating the ecological environment and beautifying the city. In Europe, a well-designed and professionally installed green roof costs 100-200 euros per square meter, which can basically meet its own maintenance conditions. If it is not for the aesthetic effect, it does not need to be fertilized.

Roof greening in my country started in the 1960s. Roof greening began to appear in Chongqing and Chengdu. By the end of the 1990s, there were many commercial and residential buildings in the center of Chengdu with roof greening rates as high as Zhuhai and Shenzhen. noodle". Therefore, roof greening is the best way to improve the urban environment in our country without occupying land. At present, the research and practice of roof greening are more and more urgent. While constantly absorbing foreign experience, pay attention to its own characteristics and solve its own problems, so as to achieve faster and better development of roof greening in our country. It should be implemented from the level of policy and theory to practice, and at the same time of theoretical guidance, it should be ensured from the design concept to the feasibility of construction and maintenance from the perspective of engineering technology. Through the construction of roof greening, it not only builds green for the exterior wall, but also regulates the ecological environment and beautifies the city appearance. Finally, it is necessary to rationally organize the process of design and construction to achieve economical, social and occupant comfort. balanced result.

However, most of the current green roof designs can only be used on flat roofs, and the greening problems of sloping roofs need to be further resolved.

Contents of the invention

In order to solve the above technical problems, the present invention provides a sloping roof greening system, mainly to develop a greening system that can reduce rainwater runoff, improve air quality, prevent dust and noise, recycle rainwater, increase urban greening rate, and enrich the city. The landscape level sloping roof greening system can effectively solve the greening problem of sloping roofs.

The technical scheme that the present invention adopts is as follows:

A sloping roof greening system of the present invention comprises a roof structure layer, a waterproof root-resistance layer, a storage and drainage layer, a tooth-like vegetation structure layer, a matrix layer, and a water collection and drainage system, and a waterproof root-resistance layer is laid on the roof structure layer, The water-resistance root layer is provided with a storage and drainage layer, and the storage and drainage layer is provided with a tooth-shaped vegetation structure layer. The tooth-shaped vegetation structure layer includes a vegetation ditch, a soil retaining ditch wall, and a water filter layer. The vegetation ditch is filled with The substrate layer, where vegetation is planted in the substrate layer; the structures of each layer are inclined, and the retaining ditch wall prevents the loss of the substrate layer. This structure is especially suitable for the greening of sloping roofs and increases the urban greening rate; the water collection and drainage system includes a water collection ditch , water guide pipe, water collection tank, water supply pump, water supply pipe, atomizing nozzle and metal sediment filter screen, the frame beam is arranged under the lower end of the roof structure layer, and the lower end of the roof structure layer is provided with a water collection ditch and Placed on the frame beam, the aqueduct is arranged horizontally under the roof structure layer, and the water collection tank is correspondingly arranged under the high end of the structure layer. The water collection ditch transports the collected rainwater and the water discharged from the storage and drainage layer to the water collection tank through the aqueduct , the connection between the water guide pipe and the water collection ditch is equipped with a metal sediment filter to filter the rainwater sediment, and the water supply pump is installed in the water collection tank. The atomizing nozzle and the water supply pump will collect rainwater and transport it to the atomizing nozzle through the water supply pipe, and the atomizing nozzle will spray mist water to irrigate the vegetation, which can not only recycle the rainwater, but also play a role in dust prevention and noise reduction.

Further, the matrix layer adopts an artificial lightweight matrix mixed with vermiculite, perlite, peat and bark materials, which is rich in nutritional value and light in weight.

Further, the tooth-shaped vegetation structure layer is made of permeable concrete material, and the depth of the vegetation ditch should be 10cm~20cm; the wall of the retaining ditch is tooth-shaped, and is set as the same length as the vegetation ditch, and one side of the retaining ditch wall is perpendicular to the roof , the other side is vertical to the ground, and the thickness of the permeable layer is 1cm~3cm.

Further, the waterproof root layer uses polymer modified bitumen waterproof membrane, the edge of the waterproof membrane extends to the bottom of the roof structure layer, and the waterproof membrane is covered with polyethylene geomembrane to prevent root penetration.

Further, the gutters are arranged along the perimeter of the building.

Further, the water guide pipe is made of PVC plastic material, and one water guide pipe is arranged every 1m-2m along the roof ridge direction, and the water collection tank is arranged away from the beam.

Further, the water supply pipes and atomizing nozzles are arranged in a group every 1m~2m along the roof ridge direction.

Beneficial effects of the present invention:

The effects and advantages of the present invention are that it can reduce rainwater runoff, alleviate municipal drainage pressure, improve air quality, prevent dust and noise, recycle rainwater, increase urban greening rate, enrich urban landscape levels, and effectively solve the greening problem of sloping roofs .

Description of drawings

Fig. 1 is the structural representation of slope roof greening system of the present invention;

Fig. 2 is the A-A sectional schematic diagram of Fig. 1;

Fig. 3 is a detailed schematic diagram of the tooth-like vegetation structure layer in Fig. 1 .

In the figure, 1 is the matrix layer; 2 is the dentate vegetation structure layer; 2-1 is the vegetation ditch; 2-2 is the retaining ditch wall; 2-3 is the water filter layer; 3 is the storage and drainage layer; Root layer; 5 is the roof structure layer; 6 is the water collection ditch; 7 is the water guide pipe; 8 is the water collection tank; 9 is the water supply pump; 10 is the water supply pipe; 11 is the atomizing nozzle; 12 is the frame beam; Sand filter.

Detailed ways

The present invention is described in detail below in conjunction with accompanying drawing and embodiment:

Embodiment: As shown in Fig. 1-Fig. 3, a slope roof greening system includes a roof structure layer 5, a waterproof root layer 4, a storage and drainage layer 3, a dentate vegetation structure layer 2, a matrix layer 1, and water collection and drainage system, the roof structure layer 5 is laid with a waterproof root layer 4, the waterproof root layer 4 uses a polymer modified bitumen waterproof membrane, the edge of the waterproof membrane extends to the bottom of the roof structure layer 5, and the waterproof membrane Covered with polyethylene geomembrane to prevent root puncture, waterproof root layer 4 is provided with storage and drainage layer 3, storage and drainage layer 3 is provided with tooth-shaped vegetation structure layer 2, and the tooth-shaped vegetation structure layer 2 includes vegetation ditch 2 -1, soil retaining ditch wall 2-2, water filter layer 2-3, the tooth-shaped vegetation structure layer 2 adopts permeable concrete material, and the depth of vegetation ditch 2-1 should be 10cm~20cm; soil retaining ditch wall 2-2 It is tooth-shaped, set as the same length as the vegetation ditch 2-1, one side of the retaining ditch wall 2-2 is perpendicular to the roof, the other side is perpendicular to the ground, and the thickness of the permeable layer is 1cm~3cm; the vegetation ditch 2-2 1 is filled with a substrate layer 1, and vegetation is planted in the substrate layer 1. The substrate layer 1 is an artificial lightweight substrate mixed with vermiculite, perlite, peat and bark materials, which is rich in nutritional value and light in weight; The structures of each layer are arranged obliquely, and the soil retaining ditch wall 2-2 prevents the loss of the substrate layer 1. This structure is especially suitable for greening on sloping roofs and increases the rate of urban greening; The water collection tank 8, the water supply pump 9, the water supply pipe 10, the atomizing nozzle 11 and the metal sediment filter screen 13, and the frame beam 12 are arranged under the lower end of the roof structure layer 5, and the lower end of the roof structure layer 5 is provided with The water collecting ditch 6 is placed on the frame beam 12, the water collecting ditch 6 is arranged along the perimeter of the building, the water guide pipe 7 is horizontally arranged under the roof structural layer 5, and the water collecting tank 8 is correspondingly arranged under the high end of the structural layer 5 , the water guide pipe 7 is made of PVC plastic material, and one water guide pipe 7 is arranged every 1m~2m along the roof ridge direction, and the water collection tank 8 is arranged away from the beam; the water collection ditch 6 discharges the collected rainwater and the storage and drainage layer 3 The water is transported to the water collection tank 8 through the aqueduct 7, and the connection between the aqueduct 7 and the water collection ditch 6 is provided with a metal sediment filter 13 to filter the sediment in the rainwater. The water supply pump 9 is arranged in the water collection tank 8, and the water supply pipe 10 The lower end of the water supply pump 9 is connected to the water supply pipe 7, and the upper end of the water supply pipe 10 is connected to the atomizing nozzle 11. The water supply pump 9 transports the collected rainwater to the atomizing nozzle 11 through the water supply pipe 10, and the atomizing nozzle 11 sprays mist Irrigation of vegetation can not only recycle rainwater, but also prevent dust and reduce noise. The water supply pipe 10 and the atomizing nozzle 11 are arranged in a group every 1m~2m along the roof ridge direction.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be It is regarded as the protection scope of the present invention.

Claims (7)

1. A sloping roof greening system, characterized in that it includes a roof structure layer (5), a waterproof root layer (4), a drainage layer (3), a tooth-shaped vegetation structure layer (2), and a matrix layer (1) . Water collection and drainage system, the roof structure layer (5) is laid with a waterproof root layer (4), the waterproof root layer (4) is provided with a storage and drainage layer (3), and the storage and drainage layer (3) is provided with There is a dentate vegetation structure layer (2), and the dentate vegetation structure layer (2) includes a vegetation ditch (2-1), a soil retaining ditch wall (2-2), and a water filtration layer (2-3). The vegetation ditch (2-1) is filled with a substrate layer (1), and the vegetation is planted in the substrate layer (1); the structures of each layer are arranged obliquely, and the retaining ditch wall (2-2) prevents the loss of the substrate layer (1); The water collection and drainage system includes a water collection ditch (6), a water guide pipe (7), a water collection tank (8), a water supply pump (9), a water supply pipe (10), an atomizing nozzle (11) and a metal sediment filter (13), the frame beam (12) is set under the lower end of the roof structure layer (5), and the lower end of the roof structure layer (5) is provided with a gutter (6) and placed on the frame beam (12) Above, the water guide pipe (7) is horizontally arranged under the roof structure layer (5), the water collection tank (8) is correspondingly arranged under the high end of the structure layer (5), and the water collection ditch (6) collects rainwater and stores and drains The water discharged from the layer (3) is transported to the water collection tank (8) through the aqueduct (7), and the connection between the aqueduct (7) and the water collection ditch (6) is provided with a metal sediment filter (13) to remove the sediment in the rainwater. Filtration, a water supply pump (9) is installed in the water collection tank (8), the lower end of the water supply pipe (10) is connected to the water supply pump (9) and set perpendicular to the water guide pipe (7), and the upper end of the water supply pipe (10) is connected to the atomizing nozzle (11), the water supply pump (9) transports the collected rainwater to the atomizing nozzle (11) through the water supply pipe (10), and the atomizing nozzle (11) sprays mist water to water the vegetation. 2. The sloping roof greening system according to claim 1, characterized in that: the substrate layer (1) is made of artificial lightweight substrate mixed with vermiculite, perlite, peat and bark materials. 3. The sloping roof greening system according to claim 1, characterized in that: the tooth-shaped vegetation structure layer (2) is made of permeable concrete material, and the depth of the vegetation ditch (2-1) should be 10cm~20cm; (2-2) is tooth-shaped, and is set as the same length as the vegetation ditch (2-1). One side of the retaining ditch wall (2-2) is perpendicular to the roof, and the other side is vertical to the ground. The thickness of the permeable layer is 1cm~ 3cm. 4. The sloping roof greening system according to claim 1, characterized in that: the waterproof root layer (4) uses a polymer modified asphalt waterproof membrane, and the edge of the waterproof membrane extends to the bottom of the roof structure layer (5) , The waterproof membrane is covered with polyethylene geomembrane to prevent root penetration. 5. The sloping roof greening system according to claim 1, characterized in that: the water collection ditch (6) is arranged along the perimeter of the building. 6. The sloping roof greening system according to claim 1, characterized in that: the water guide pipe (7) is made of PVC plastic material, and one water guide pipe (7) is provided every 1m~2m along the roof ridge direction, and the water collection tank (8) Avoid beam settings. 7. The sloping roof greening system according to claim 1, characterized in that: the water supply pipe (10) and the atomizing nozzle (11) are arranged in a group every 1m~2m along the roof ridge direction.