Public building special-shaped roof ecological greening system and construction method thereof

Abstract

The invention discloses a public building special-shaped roof ecological greening system and a building construction method thereof, and relates to the technical field of greening systems.The public building is provided with a special-shaped cambered surface roof, and a circle of soil loss prevention frame is fixed to the outer ring surface of the special-shaped cambered surface roof; and two ecological greening system irrigation structures are arranged in the bottom area of the inner cavity of the special-shaped cambered surface roof. The rainwater collecting mechanism and the rainwater irrigation structure are arranged below the special-shaped cambered surface roof, rainwater permeating from vegetation and soil enters the rainwater collecting mechanism, is filtered and then converges into the tank body of the rainwater irrigation structure, and the rainwater is re-irrigated to the vegetation through the pipe fitting and the spray head, so that the rainwater irrigation effect is improved. The hollow soil loss prevention frame is arranged on the edge of the special-shaped cambered surface roof, seepage rainwater is collected through the frame while water and soil are surrounded by the frame to prevent loss, and the problems of water and soil conservation, rainwater utilization and daylighting of the special-shaped roof of the public building can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of greening systems, and in particular to an ecological greening system for special-shaped roofs of public buildings and a construction method thereof. Background Art

[0002] Internationally, green roofs are generally defined as any planting technique that's detached from the earth's atmosphere. This encompasses not only rooftop planting but also any special spaces on buildings and structures that aren't connected to the ground, nature, or soil, such as terraces, rooftops, balconies, walls, rooftops of underground garages, overpasses, and more. Green roofs aren't just about extending green space into the air, effectively conserving land and expanding urban space. They also represent a perfect fusion of architectural and landscape art, playing a crucial role in protecting the urban environment and improving the quality of human habitation. In some public buildings, rooftops are designed to extend downward, sloping down to connect to the ground-level green space, creating an effect of integration with nature. However, these efforts must ensure that green roofs connect with the ground, preventing rainwater runoff and plant irrigation, and preventing soil erosion.

[0003] Since the current green roofs are usually flat and are prepared in special planting containers. If the roof is in a curved state, it is difficult to fix the vegetation on the curved roof, and the soil and water loss is more serious. In addition, in the current green roofs, it basically relies on the drainage layer to retain rainwater at the roots of the vegetation, or installs irrigation pipes and uses tap water for irrigation. If the method of relying on the drainage layer to preserve rainwater, the roots of the vegetation are prone to necrosis due to long-term immersion in water, and tap water irrigation is not environmentally friendly. Therefore, those skilled in the art have proposed an ecological greening system for the special-shaped roofs of public buildings and a construction method thereof. Summary of the Invention

[0004] To address the aforementioned shortcomings of green vegetation irrigation structures on irregularly shaped curved roofs, such as their poor environmental performance and inadequate ability to control soil loss and landslides, the present invention provides an ecological greening system for irregularly shaped roofs of public buildings and its construction method. This ecological greening system and construction method are designed to create a vegetation planting environment that blends seamlessly with the surrounding vegetation, ensure rainwater collection and utilization, and effectively address soil and water conservation, building waterproofing, and lighting issues.

[0005] In order to achieve the above-mentioned invention purpose, the technical solution provided by the present invention is as follows:

[0006] An ecological greening system for the special-shaped roof of a public building, wherein the public building is provided with a special-shaped curved roof, wherein the middle portion of the special-shaped curved roof has an upward protrusion, and the edge of the special-shaped curved roof smoothly extends downward to the ground to blend in. The ground near the public building has a ridge to form a transition. A soil loss prevention frame is fixed to the outer surface of the special-shaped curved roof, and two ecological greening system irrigation structures are provided in the bottom area of ​​the inner cavity of the special-shaped curved roof, and the ecological greening system irrigation structures are buried 100 cm to 120 cm inside the ground.

[0007] The ecological greening system irrigation structure includes two rainwater filter tanks, an inlet pipe connected to the water inlet of the rainwater filter tank, and an outlet pipe connected to the water outlet of the rainwater filter tank, and water flow control components are provided on the sections of the inlet pipe and the outlet pipe. The outlet pipe has a row of irrigation nozzles arranged in an equidistant array on the end away from the rainwater filter tank, and a rainwater collection mechanism is provided on the end of the inlet pipe away from the rainwater filter tank. The rainwater filter tank and the water flow control component are buried inside the ground.

[0008] The water flow control components include two electromagnetic control valves, a servo water pump, and a liquid flow sensor; the rainwater collection mechanism includes four square rainwater collection tanks fixed side by side, filter cotton fixed on the upper layer of the inner cavity of the square rainwater collection tank, and 15-30 vertical pipes fixed on the upper surface of the filter cotton in a rectangular array.

[0009] In the above-mentioned ecological greening system for the special-shaped roof of a public building, preferably, the upper surface of the special-shaped curved roof is paved with a covering layer, and a number of green plants are planted in the covering layer, and 30-60 seepage holes are opened on the upper surface of the special-shaped curved roof for allowing the top port of the vertical pipe to pass through from the inside of the special-shaped curved roof to the top area, and the top port surface of the vertical pipe is flush with the top surface of the special-shaped curved roof; wherein, a number of light wells are fixed through the inside of the special-shaped curved roof, and the bottom ends of both sides of the special-shaped curved roof extend to connect with the ground.

[0010] In the above-mentioned ecological greening system for the special-shaped roof of a public building, preferably, the interior of the anti-soil loss frame is hollow, and 10-15 hoses are passed through the bottom surface of the anti-soil loss frame, and the ends of the hoses away from the anti-soil loss frame are all passed through the inner cavity of the rainwater filter tank, wherein the ends of the hoses located inside the anti-soil loss frame are all installed with filter nets, and a circle of 20-40 through holes is provided on the inner surface of the anti-soil loss frame, and filter mesh plates are all installed inside the through holes.

[0011] In the above-mentioned ecological greening system for the special-shaped roof of a public building, preferably, a water outlet port is provided on the left side of the rainwater filter tank, and a water inlet port is provided on the right side of the rainwater filter tank, and the water outlet port is fixedly connected to the end of the outlet pipe away from the irrigation nozzle through a pipe joint, and the water inlet port is fixedly connected to the end of the inlet pipe away from the rainwater collection mechanism through a pipe joint; wherein, four protrusions are fixed on the outer ring surface of the rainwater filter tank, and the end of the protrusion away from the rainwater filter tank is fixedly connected to the inner cavity side wall of the special-shaped curved roof through bolts and steel pipes.

[0012] In the above-mentioned ecological greening system for the special-shaped roof of a public building, preferably, the end of the water inlet pipe away from the rainwater filter tank is forked with four manifolds, and the ends of the manifolds away from the water inlet pipe all penetrate into the bottom surface of the square rainwater collecting trough.

[0013] In the above-mentioned ecological greening system for the special-shaped roof of a public building, preferably, the bottom surface of the square rainwater collection trough is provided with a circular hole for the manifold to pass through, and the four side walls of the square rainwater collection trough are fixedly connected to the inner cavity side walls of the special-shaped curved roof through channel steel plates.

[0014] In the above-mentioned ecological greening system for the special-shaped roof of a public building, preferably, the end of the water outlet pipe away from the water outlet port penetrates into the top of the special-shaped curved roof, and the section of the water outlet pipe located at the top of the special-shaped curved roof is buried in the soil on the upper surface of the special-shaped curved roof, wherein the water outlet port of the irrigation nozzle is located outside the soil.

[0015] In the above-mentioned ecological greening system for the special-shaped roof of a public building, preferably, the bottom surface of the filter cotton and the bottom surface of the inner cavity of the square rainwater collection trough have a distance of 10-20 cm, so as to store rainwater in the inner cavity of the square rainwater collection trough.

[0016] In the above-mentioned ecological greening system for the special-shaped roof of a public building, a circle of anti-soil loss frame is fixed on the outer surface of the special-shaped curved roof, and 3-7 circles of enclosure frames are fixedly connected to the upper surface of the special-shaped curved roof. The enclosure frames are arranged in a concentric circle posture with each other, and the overall shape of the enclosure frames is adapted to the top curved surface of the special-shaped curved roof. The height of the enclosure frames is 4-10 cm, which is used to gradually block the top soil of the special-shaped curved roof from being lost.

[0017] In the above-mentioned ecological greening system for the special-shaped roof of a public building, the end of the water inlet pipe away from the rainwater filter tank is forked with four manifolds, and the ends of the manifolds away from the water inlet pipe all penetrate into the bottom surface of the square rainwater collection trough.

[0018] A construction method for an ecological greening system on a special-shaped roof of a public building includes the following construction steps:

[0019] S1: After the main structure of the public building is completed, the steel structure is used to lay the curved roof frame, and the frame shell of the curved roof is made using wooden formwork. Steel bars are filled between the steel structure frame wrapped by the frame shell. The steel bars and the steel structure frame form the skeleton structure of the irregular curved roof. Concrete is poured between the wooden formwork to cover the skeleton structure composed of the steel structure frame and steel bars. At the same time, seepage holes are reserved for rainwater penetration, and the roughness of the concrete upper surface is maintained;

[0020] S2: Several light wells are reserved on the special-shaped curved roof. The bottom of the light well extends into the public building, and the bottom ends of both sides of the special-shaped curved roof extend to connect with the ground;

[0021] S3: A soil loss prevention frame is set at the edge of the special-shaped curved roof. The top of the soil loss prevention frame protrudes to form a cofferdam. A hose is provided at the bottom of the soil loss prevention frame. The distal end of the hose passes through the inner cavity of the rainwater filter tank.

[0022] S4: Secure the ecological greening system irrigation structure to the bottom of the steel structure frame with bolts, screws, and channel steel. Lay the outlet pipe from the bottom to the upper surface of the steel structure frame and extend it above the curved roof. Use pipe joints to split the outlet pipe on the upper surface of the steel structure frame into multiple sections with equal spacing. Install a rectangular array of irrigation nozzles on the outlet pipe.

[0023] S5: A 60cm-120cm thick mixture of soil and gravel is laid on the upper surface of the special-shaped curved roof. A plant planting area is reserved on the top of the laid soil according to the design. Shrubs and trees are planted in the soil of the special-shaped curved roof, and short shrubs and flowers are planted according to the design to form a green area corresponding to the surrounding green space.

[0024] In S1, a plurality of protruding retaining dams are provided on the top of the concrete on the curved roof. The retaining dams are linear concrete structures. The retaining dams and the enclosure frame are combined to divide the curved roof into blocks to facilitate the collection of soil and gravel.

[0025] As can be seen from the above technical solutions, the present invention provides an ecological greening system for special-shaped roofs of public buildings and a construction method thereof. Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The technical solution of the present invention is to set a rainwater collection mechanism and a rainwater irrigation structure under the special-shaped curved roof. The rainwater that seeps from the vegetation and soil on the special-shaped curved roof enters the rainwater collection mechanism, is simply filtered, and then flows into the tank of the rainwater irrigation structure. The rainwater is then re-irrigated to the vegetation using pipes and sprinklers. In addition, a hollow soil loss prevention frame is set at the edge of the special-shaped curved roof. While the frame surrounds the water and soil to prevent loss, the seeping rainwater is collected by the frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0028] Figure 1 This is a schematic diagram of an irregular roof;

[0029] Figure 2 This is a schematic diagram of the irrigation structure of the ecological greening system inside the irregular roof;

[0030] Figure 3 This is a schematic diagram of the irregular roof after cutting;

[0031] Figure 4 This is a schematic diagram of the irrigation structure of the ecological greening system;

[0032] Figure 5 This is a schematic diagram of a rainwater harvesting mechanism;

[0033] Figure 6 It is a cross-sectional diagram of the special-shaped roof and ecological greening system.

[0034] Figure 7 It is a schematic diagram of the completed state of a public building including the special-shaped roof ecological greening system of the present invention.

[0035] Attachment Figure 1 -Attached Figure 7 The corresponding relationship between the components is as follows:

[0036] 1. Special-shaped curved roof; 2. Anti-soil erosion frame; 3. Ecological greening system irrigation structure; 31. Rainwater filter tank; 32. Bump; 33. Water inlet port; 34. Water flow control component; 35. Water inlet pipe; 36. Manifold; 37. Irrigation nozzle; 38. Water outlet pipe; 39. Water outlet port; 310. Square rainwater collection trough; 311. Filter cotton; 312. Vertical pipe; 4. Seepage hole; 5. Ground; 6. Light well. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0039] Example 1

[0040] This embodiment is a relatively superior technical solution for an ecological greening system for the irregular roofs of public buildings. It is used in an earth-covered library building in a certain park. The earth-covered building integrates with nature. The roof is curved, and its edges extend downward in a slope to the ground. A ridge is provided on the ground near the public building to form a connection. The height of the ridge is close to the edge of the irregular roof of the public building. Plants are planted on the roof of the public building, and the roof is also provided with light-transmitting holes. Through the roof plants and extended shape, an effect of integration of building and nature is formed.

[0041] Refer to the instruction manual Figure 1 and Figure 6 As shown; in the embodiment, the special-shaped roof ecological greening system includes a special-shaped curved roof 1 and the ground 5 on both sides. A circle of anti-soil loss frame 2 is fixed on the outer surface of the special-shaped curved roof 1, and two ecological greening system irrigation structures 3 are provided in the bottom area of ​​the inner cavity of the special-shaped curved roof 1. The ecological greening system irrigation structure 3 is buried 100cm-120cm inside the ground 5.

[0042] Refer to the instruction manual Figure 4As shown, the ecological greening system irrigation structure 3 includes two rainwater filter tanks 31, an inlet pipe 35 connected to the water inlet of the rainwater filter tank 31, and an outlet pipe 38 connected to the water outlet of the rainwater filter tank 31. Water flow control components 34 are provided on the sections of the inlet pipe 35 and the outlet pipe 38. A row of irrigation nozzles 37 are arranged in an equidistant array on the end of the outlet pipe 38 away from the rainwater filter tank 31, and a rainwater collection mechanism is provided on the end of the inlet pipe 35 away from the rainwater filter tank 31. The rainwater filter tank 31 and the water flow control component 34 are buried inside the ground 5. The water flow control component 34 includes two electromagnetic control valves, a servo water pump, and a liquid flow sensor. The rainwater collection mechanism includes four square rainwater collection tanks 310 fixed side by side, filter cotton 311 fixed on the upper layer of the inner cavity of the square rainwater collection tank 310, and 15-30 vertical pipes 312 fixed on the upper surface of the filter cotton 311 in a rectangular array.

[0043] Refer to the instruction manual Figure 3 As shown; the upper surface of the special-shaped curved roof 1 is paved with a covering layer, in which a number of green plants are planted, and 30-60 seepage holes 4 are opened on the upper surface of the special-shaped curved roof 1, for allowing the top end port of the vertical pipe 312 to pass through from the inside of the special-shaped curved roof 1 to the top area, and the top end port surface of the vertical pipe 312 is flush with the top surface of the special-shaped curved roof 1; wherein, a number of light wells 6 are fixed through the inside of the special-shaped curved roof 1, and the bottom ends of both sides of the special-shaped curved roof 1 extend to connect with the ground 5. The interior of the anti-soil loss frame 2 is hollow, and 10-15 hoses are passed through the bottom surface of the anti-soil loss frame 2. The ends of the hoses away from the anti-soil loss frame 2 are all passed through the inner cavity of the rainwater filter tank 31. Among them, the ends of the hoses located inside the anti-soil loss frame 2 are all installed with filter nets, and a circle of 20-40 through holes is provided on the inner surface of the anti-soil loss frame 2, and filter mesh plates are installed inside the through holes.

[0044] Refer to the instruction manual Figure 4As shown, a rainwater filtration tank 31 can be placed on the ground 5 near a public building A, or beneath the irregularly curved roof 1 on top of the public building A. A water outlet port 39 is provided on the left side of the rainwater filtration tank 31, and a water inlet port 33 is provided on the right side of the rainwater filtration tank 31. The water outlet port 39 is fixedly connected to the end of the outlet pipe 38 away from the irrigation nozzle 37 via a pipe joint, while the water inlet port 33 is fixedly connected to the end of the inlet pipe 35 away from the rainwater collection mechanism via a pipe joint. Four protrusions 32 are fixed to the outer surface of the rainwater filtration tank 31. The ends of the protrusions 32 away from the rainwater filtration tank 31 are fixedly connected to the inner wall of the irregularly curved roof 1 via bolts and steel pipes. Four manifolds 36 are bifurcated at the end of the inlet pipe 35 away from the rainwater filtration tank 31. The ends of the manifolds 36 away from the inlet pipe 35 extend through the bottom surface of the square rainwater collection trough 310. The bottom surface of the square rainwater collecting trough 310 is provided with a circular hole for the manifold 36 to pass through, and the four side walls of the square rainwater collecting trough 310 are fixedly connected to the inner cavity side walls of the special-shaped curved roof 1 through channel steel plates.

[0045] Refer to the instruction manual Figure 4 As shown, the end of the outlet pipe 38, remote from the outlet port 39, extends through the top of the irregularly curved roof 1. The section of the outlet pipe 38 located at the top of the irregularly curved roof 1 is buried in the soil on the upper surface of the irregularly curved roof 1. The outlet port of the irrigation nozzle 37 is located outside the soil. The bottom surface of the filter cotton 311 is 10-20 cm away from the bottom surface of the inner cavity of the square rainwater collection trough 310, allowing rainwater to be stored in the inner cavity of the square rainwater collection trough 310.

[0046] Example 2

[0047] This embodiment is a construction method for a special-shaped rooftop ecological greening system for a public building, and is a preferred construction technology solution:

[0048] First, the main concrete structure of the public building A is completed before the curved roof is created. The steel structure is used to lay the curved frame of the special-shaped curved roof, and the frame shell of the curved roof is made using a wooden formwork. Steel bars are filled between the steel structure frame wrapped by the frame shell. The steel bars and the steel structure frame form the skeleton structure of the special-shaped curved roof. Concrete is poured between the wooden formwork to cover the skeleton structure composed of the steel structure frame and the steel bars. At the same time, seepage holes 4 are reserved for rainwater infiltration, and the roughness of the concrete surface is maintained. When pouring concrete, the top of the concrete on the curved roof is formed into multiple protruding retaining dams using the formwork. The retaining dams are linear concrete structures. The retaining dams and the enclosure frame are combined to divide the curved roof into blocks to facilitate the collection of soil and sand and gravel.

[0049] Second, a number of light wells 6 are reserved on the special-shaped curved roof. The light wells 6 are used to introduce natural light into the interior of the public building so that the interior of the public building can collect natural light. The bottom of the light well extends to the lowest floor of the public building, and natural light can be seen on each floor. The bottom ends of both sides of the special-shaped curved roof extend to connect with the ground. In order to create a continuous effect, the ground near the public building is provided with a ridge to achieve a transition.

[0050] Third: a soil loss prevention frame is set at the edge of the special-shaped curved roof 1. The top of the soil loss prevention frame protrudes to form a cofferdam. A hose is provided at the bottom of the soil loss prevention frame. The distal end of the hose passes through the inner cavity of the rainwater filter tank.

[0051] Fourth: Secure the ecological greening system irrigation structure 3 to the bottom of the steel structure frame with bolts, screws, and channel steel, and lay the outlet pipe 38 from the bottom to the upper surface of the steel structure frame and extend it above the curved roof. Then, use pipe joints to bifurcate the section of the outlet pipe on the upper surface of the steel structure frame into multiple sections with equal spacing, and install the irrigation nozzles 37 in a rectangular array on the outlet pipe 38;

[0052] Fifth: A 60cm-120cm thick layer of soil and gravel mixture is laid on the upper surface of the curved roof 1. A planting area is reserved on top of the laid soil as designed. Shrubs and trees are planted in the soil of the curved roof, and further dwarf shrubs and flowers are planted according to the design, creating a green space that corresponds to the surrounding green space. This creates a garden landscape on the roof. Because both sides are close to the ground and at similar heights, the edges of the building meet the raised ground 5, creating an overall hilly state. The vegetation is essentially connected, stretching into one, and coexisting naturally and harmoniously.

[0053] After the public buildings are covered with soil and planted with vegetation, they will form an integrated mound shape with the surrounding ground, such as Figure 7 As shown. This design can not only meet the harmonious coexistence of public buildings and nature, and realize the effect of integrating the roof and green space. It can also collect rainwater and store it through the design of rainwater collection facilities and irrigation facilities to meet the requirements of roof vegetation irrigation. In addition, by casting the curved roof of public building A according to the design, on the basis of meeting the modeling requirements, it also provides convenience for the installation of rainwater collection facilities and irrigation facilities, and collects rainwater according to the surrounding anti-soil loss frame to play a role in preventing soil loss, and uses the combination of retaining dams and enclosure frames to divide the curved roof into blocks, thereby forming a structure on the surface of the curved roof that is convenient for solidifying the bottom of the soil, laying the foundation for soil maintenance and preventing soil loss. More importantly, large-scale vegetation and small-scale vegetation are planted at the same time to truly prevent soil loss and solidify the soil.

[0054] According to the content of the above-mentioned preferred technical solution, the workflow of the technical solution is explained as follows:

[0055] Once rainy weather occurs, rainwater will flow and penetrate around along the curved surface of the special-shaped curved roof 1. During this process, the seepage holes 4 guide the rainwater into the vertical pipe 312, and allow the rainwater to be filtered through the filter cotton 311 and stored in the square rainwater collection trough 310.

[0056] At the same time, the water flow control assembly 34 on the water inlet pipe 35 pumps the filtered rainwater into the rainwater filter tank 31 for storage through a water pump. This achieves the collection and utilization of rainwater, realizing the new concept of sponge city and green city construction;

[0057] In the absence of rain, rainwater from the rainwater filter tank 31 is pumped into the irrigation nozzle 37 via the water flow control assembly 34 on the outlet pipe 38. The irrigation nozzle 37 is located on the upper surface of the irregularly curved roof 1 to irrigate the vegetation. It should be noted that during the rainwater seepage process, rainwater not collected by the seepage holes 4 will permeate along the curved surface of the irregularly curved roof 1 to the surrounding edges, where it will be collected by the through-holes on the inner side of the soil runoff frame 2 and further filtered and collected into the rainwater filter tank 31.

[0058] Since the upper part of the building is covered with a soil layer and a vegetation layer, and the two sides are connected to the ground, in order to ensure the lighting inside the building, a number of light wells 6 are specially set up, among which a larger light well is set up in the middle to ensure the amount of light. The conventional operation is to set a semicircular transparent cover on the top of the light well, on the one hand to ensure lighting, and on the other hand to prevent rainwater and dirt from entering the interior of the building through the light well. Since the ground is basically close to the curved roof, when covering the soil and planting vegetation, the two are connected, and connecting paths can be laid on them, thereby creating an integrated and integrated atmosphere. Combined with a specially set rainwater collection, recycling and irrigation system, it makes it more meet the needs of creating an ecological garden.

[0059] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the guidance of the present invention, and any technical solutions that are the same or similar to those of the present invention, fall within the scope of protection of the present invention. Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the efficacy and purpose that can be achieved by this application, should still fall within the scope of the technical content disclosed in this application.

Claims

1. An ecological greening system for special-shaped roofs of public buildings, comprising a special-shaped curved roof (1) and a ground (5), wherein the middle of the special-shaped curved roof (1) has an upward protrusion, and the edge of the special-shaped curved roof (1) extends smoothly downward to near the ground (5), characterized in that: A soil loss prevention frame (2) is also built at the outer edge of the special-shaped curved roof (1), and two ecological greening system irrigation structures (3) are arranged in the inner cavity of the special-shaped curved roof (1), and the ecological greening system irrigation structures (3) are buried at a position 100 cm to 120 cm inside the ground (5); The ecological greening system irrigation structure (3) comprises two rainwater filter tanks (31), a water inlet pipe (35) connected to the water inlet of the rainwater filter tank (31), and a water outlet pipe (38) connected to the water outlet of the rainwater filter tank (31), and a water flow control component (34) is arranged on the pipelines of the water inlet pipe (35) and the water outlet pipe (38); wherein a row of irrigation nozzles (37) are arranged in an equidistant array on one end of the water outlet pipe (38) away from the rainwater filter tank (31), and a rainwater collection mechanism is arranged on one end of the water inlet pipe (35) away from the rainwater filter tank (31); wherein the rainwater filter tank (31) and the water flow control component (34) are buried inside the ground (5); The water flow control components (34) each include two electromagnetic control valves, a servo water pump, and a liquid flow sensor; the rainwater collection mechanism includes four square rainwater collection tanks (310) fixed side by side, filter cotton (311) fixed on the upper layer of the inner cavity of the square rainwater collection tank (310), and 15 to 30 vertical pipes (312) fixed on the upper surface of the filter cotton (311) in a rectangular array; The interior of the soil loss prevention frame (2) is hollow, and 10-15 hoses are inserted through the bottom surface of the soil loss prevention frame (2), and the ends of the hoses away from the soil loss prevention frame (2) are inserted into the inner cavity of the rainwater filter tank (31), wherein the ends of the hoses located inside the soil loss prevention frame (2) are installed with filter screens, and a circle of 20-40 through holes is provided on the inner surface of the soil loss prevention frame (2), and filter screen plates are installed inside the through holes; The upper surface of the irregular curved roof (1) is paved with a covering layer, in which a plurality of green plants are planted, and the upper surface of the irregular curved roof (1) is provided with 30-60 water seepage holes (4) for allowing the top end of the vertical pipe (312) to pass through from the inside of the irregular curved roof (1) to the top area, and the top end surface of the vertical pipe (312) is flush with the top surface of the irregular curved roof (1); wherein a plurality of light wells (6) are fixedly penetrated inside the irregular curved roof (1), and the bottom ends of both sides of the irregular curved roof (1) extend to connect with the ground (5).

2. The public building special-shaped roof ecological greening system according to claim 1 is characterized in that: The rainwater filter tank (31) is provided with a water outlet port (39) on the left side, and a water inlet port (33) on the right side. The water outlet port (39) is fixedly connected to the end of the water outlet pipe (38) away from the irrigation nozzle (37) through a pipe joint, and the water inlet port (33) is fixedly connected to the end of the water inlet pipe (35) away from the rainwater collection mechanism through a pipe joint; wherein four protrusions (32) are fixedly connected to the outer ring surface of the rainwater filter tank (31), and the end of the protrusion (32) away from the rainwater filter tank (31) is fixedly connected to the inner cavity side wall of the special-shaped curved roof (1) through bolts and steel pipes.

3. The public building special-shaped roof ecological greening system according to claim 1 is characterized in that: One end of the water inlet pipe (35) away from the rainwater filter tank (31) is forked to be provided with four manifolds (36), and one end of the manifolds (36) away from the water inlet pipe (35) penetrates into the bottom surface of the square rainwater collection trough (310).

4. The public building special-shaped roof ecological greening system according to claim 1 is characterized in that: The bottom surface of the square rainwater collection trough (310) is provided with a circular hole for the manifold (36) to pass through, and the surrounding side walls of the square rainwater collection trough (310) are fixedly connected to the inner cavity side walls of the special-shaped curved roof (1) through channel steel plates.

5. The public building special-shaped rooftop ecological greening system according to claim 1 is characterized in that: One end of the water outlet pipe (38) away from the water outlet port (39) penetrates to the top of the special-shaped curved roof (1), and the section of the water outlet pipe (38) located at the top of the special-shaped curved roof (1) is buried in the soil on the upper surface of the special-shaped curved roof (1), wherein the water outlet port of the irrigation nozzle (37) is located outside the soil.

6. The public building special-shaped rooftop ecological greening system according to claim 1 is characterized in that: The bottom surface of the filter cotton (311) and the bottom surface of the inner cavity of the square rainwater collection trough (310) have a spacing of 10-20 cm, so as to allow rainwater to be stored in the inner cavity of the square rainwater collection trough (310).

7. The public building special-shaped roof ecological greening system according to claim 1 is characterized in that: A soil loss prevention frame (2) is fixed on the outer surface of the special-shaped curved roof (1), and 3-7 enclosure frames (7) are fixedly connected to the upper surface of the special-shaped curved roof (1). The enclosure frames (7) are arranged in a concentric circle with each other, and the overall shape of the enclosure frames (7) is adapted to the top curved surface of the special-shaped curved roof (1). The height of the enclosure frames (7) is 4-10 cm, and is used to gradually block the soil of the covering layer from being lost from the top of the special-shaped curved roof (1).

8. The public building special-shaped rooftop ecological greening system according to claim 1 is characterized in that: One end of the water inlet pipe (35) away from the rainwater filter tank (31) is forked to be provided with four manifolds (36), and one end of the manifolds (36) away from the water inlet pipe (35) penetrates into the bottom surface of the square rainwater collection trough (310).

9. A construction method for a special-shaped rooftop ecological greening system for a public building, characterized in that: The ecological greening system for special-shaped roofs of public buildings according to any one of claims 1 to 8 includes the following construction steps: S1: After the main structure of the public building is completed, a curved frame of a special-shaped curved roof (1) is laid using a steel structure, and a frame shell of the curved roof is made using a wooden formwork. Steel bars are filled between the steel structure frame wrapped by the frame shell. The steel bars and the steel structure frame form a skeleton structure of the special-shaped curved roof. Concrete is poured between the wooden formwork to cover the skeleton structure composed of the steel structure frame and the steel bars. At the same time, seepage holes (4) are reserved for rainwater penetration, and the roughness of the upper surface of the concrete is maintained; S2: A plurality of light wells are reserved on the irregular curved roof, the bottom of the light wells extends into the public building, and the bottom ends of both sides of the irregular curved roof (1) extend to connect with the ground (5); S3: A soil loss prevention frame is arranged at the edge of the special-shaped curved roof, the top of the soil loss prevention frame protrudes to form a cofferdam, and a hose is arranged at the bottom of the soil loss prevention frame, the distal end of the hose penetrates into the inner cavity of the rainwater filter tank; S4: Fix the ecological greening system irrigation structure (3) at the bottom of the steel structure frame by bolts, screws and channel steel, and lay the water outlet pipe (38) from the bottom to the upper surface of the steel structure frame and extend it above the curved roof, and then use pipe joints to split the section of the water outlet pipe (38) located on the upper surface of the steel structure frame into multiple sections with equal spacing, and install the irrigation nozzles (37) in a rectangular array on the water outlet pipe (38); S5: a 60-120 cm thick soil and gravel mixture is laid on the upper surface of the special-shaped curved roof (1), shrubs and trees are planted in the concave position of the curved surface of the special-shaped curved roof (1), and short shrubs and flowers are planted in the protruding position of the curved surface.

10. The construction method of a special-shaped rooftop ecological greening system for a public building according to claim 9, characterized in that: In S1, the top of the concrete on the curved roof is equipped with multiple protruding retaining dams, which divide the curved roof into blocks to collect soil and gravel.

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