Combined retaining and water filtering structure for steep slope planting roof

Abstract

The utility model discloses a kind of large-gradient planting roof combined type earth-retaining water-filtering structure, belong to planting roof technical field.The structure includes antiskid baffle, small concrete buttress, flat steel tie belt, pre-embedded component and geotextile;Antiskid baffle uses stainless steel scalene angle steel with rectangular hole, is fixed by pre-embedded steel plate and clamping groove type embedded part, surface is paved geotextile;Small concrete buttress support baffle enhances bending resistance, and flat steel tie belt is connected subdivision compartment by drag hook and buttress.Construction method includes pre-embedded processing, baffle production, pouring installation, corrosion prevention, paving geotextile and the like steps.The utility model realizes efficient earth-retaining and reasonable water-filtering, solves traditional structure leakage, insufficient rigidity and soil loss problem, guarantees planting roof safety and ecological benefit.

Description

Technical Field

[0001] This utility model relates to the field of green roof technology, specifically to a combined retaining and water-filtering structure for a steep-slope green roof. Background Technology

[0002] With the acceleration of urbanization and the increasing demand for ecological environment, the multi-functional use of building space has become an important development direction. Planted roofs, as an innovative form of integrating architecture with nature, have emerged. They break away from the limitations of traditional single-function roofs, utilizing three-dimensional space to create rich green landscapes, combining ecological benefits with aesthetic value. They can effectively alleviate the urban heat island effect, reduce building energy consumption, and also provide thermal insulation, thus gradually gaining attention.

[0003] In steep green roof projects, traditional retaining structures struggle to simultaneously meet the dual requirements of efficient soil retention and water filtration. Existing anti-slip barriers suffer from several problems: firstly, the drilling method for fixing severely compromises the waterproofing of the sloped roof, easily leading to leaks; secondly, their insufficient rigidity makes them prone to bending and deformation under soil pressure, reducing their soil-retaining effect and compromising soil stability; and thirdly, the lack of a proper water filtration design allows rainwater to easily carry planting soil down the slope, causing soil erosion, damaging the ecological environment, and hindering plant growth. While some structures attempt to address these issues by incorporating supports or filter layers, the results are unsatisfactory, failing to achieve a harmonious balance between structural stability and water filtration.

[0004] Therefore, there is an urgent need to design a new type of retaining and filtration structure and construction method to meet the actual engineering needs of steep-slope green roofs in terms of retaining and filtration, and to improve the safety and ecological benefits of green roofs. Utility Model Content

[0005] The purpose of this utility model is to solve the problems of existing anti-slip baffles in steep green roofs, such as easy water leakage, insufficient rigidity leading to bending and deformation, and inability to effectively prevent soil sliding and soil loss. It provides a combined soil retaining and water filtering structure for steep green roofs, which can achieve reasonable filtration and discharge of rainwater, and ensure the stability of the soil on the green roof and the safety of the green growth environment.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] The first aspect of this utility model provides a combined soil retaining and water filtering structure for a steep slope green roof, comprising: an anti-slip baffle, disposed on the steep slope green roof, wherein the anti-slip baffle divides the steep slope green roof into multiple stepped compartments;

[0008] Small concrete supports are installed on one side of the anti-slip baffle and abut against the anti-slip baffle to provide support for the anti-slip baffle and enhance its bending resistance.

[0009] Flat steel tie strips are vertically connected to the anti-slip baffle and are used to further subdivide the stepped compartments to improve the overall rigidity and stability of the anti-slip baffle.

[0010] The embedded component includes an embedded steel plate and a slotted fixing embedded part. The embedded steel plate is embedded in the concrete structural slab of the steep slope green roof, and one end of the anti-slip baffle is connected to the embedded steel plate. The slotted fixing embedded part is embedded on the outside of the guardrail of the steep slope green roof, and the other end of the anti-slip baffle is engaged with the slotted fixing embedded part.

[0011] As a further improvement to the technical solution of this utility model, the anti-slip baffle is made of stainless steel unequal angle steel, and multiple rectangular holes are opened in the vertical direction of its long side; the surface of the anti-slip baffle is covered with geotextile, which is used to prevent rainwater from carrying planting soil and sliding down through the rectangular holes.

[0012] The small concrete support is pre-embedded with hooks, and the flat steel tie band is connected to the small concrete support through the hooks.

[0013] As a further improvement to the technical solution of this utility model, the long side dimension of the stainless steel unequal angle steel is equal to the thickness of the planting soil.

[0014] As a further improvement to the technical solution of this utility model, the plurality of rectangular holes are equally spaced in the vertical direction of the long side of the stainless steel unequal-sided angle steel.

[0015] As a further improvement to the technical solution of this utility model, the flat steel tie band is made of 3mm thick flat steel; the geotextile is tightly fitted to the anti-slip baffle and there are no wrinkles during the laying process.

[0016] As a further improvement to the technical solution of this utility model, the small concrete support is provided with longitudinal bars and stirrups, and the longitudinal bars are connected to the pre-embedded steel bars.

[0017] The second aspect of this utility model provides a construction method for a combined retaining and filtering structure for a steeply sloped green roof, including the following steps:

[0018] Step S1: Pre-embedded treatment. Before pouring the concrete structural slab of the steep slope green roof, stainless steel plates, steel bars and slotted fixing pre-embedded parts are pre-embedded along the slope direction at a preset interval. The upper surface of the stainless steel plate is flush with the surface of the concrete structural slab to be poured, and the slotted fixing pre-embedded parts are embedded on the outside of the guardrail.

[0019] Step S2: Make an anti-slip baffle by selecting stainless steel unequal angle steel and opening rectangular holes at preset intervals in the vertical direction of its long side, and not opening the rectangular holes at the ends of the stainless steel unequal angle steel.

[0020] Step S3: Pour concrete structural slabs and guardrails, ensuring the surface of the concrete structural slab is flush with the stainless steel plate during pouring;

[0021] Step S4: Install anti-slip baffles. After the concrete structure slab and guardrail reach the design strength, weld one end of the anti-slip baffle to the stainless steel plate. The anti-slip baffles are connected by interlocking joints. The other end of the anti-slip baffle is engaged with the slot-type fixed embedded part.

[0022] Step S5: Anti-corrosion treatment: After cleaning the surface of the anti-slip baffle and the exposed stainless steel plate, apply anti-corrosion coating.

[0023] Step S6: Cast small concrete supports, roughen and clean the surface of the concrete structure slab, set up formwork and pre-embed hooks at the position of the reinforcing bars, and cast concrete to form small concrete supports, so that the long side of the anti-slip baffle abuts against the small concrete supports.

[0024] Step S7: Lay geotextile. Lay geotextile on the surface of the anti-slip baffle and fix the geotextile with U-shaped nails.

[0025] Step S8: Install the flat steel tie band and connect the flat steel tie band vertically to the small concrete support through the hook;

[0026] Step S9: Cover with planting soil and plant greenery.

[0027] As a further improvement to the technical solution of this utility model, in step S4, the interlocking connection between the anti-slip baffles is a single flat interlocking connection.

[0028] As a further improvement to the technical solution of this utility model, in step S1, a level or total station is used to control the elevation of the stainless steel plate.

[0029] As a further improvement to the technical solution of this utility model, in step S5, a grinding machine or sandblasting equipment is used to clean the surface of the anti-slip baffle and the exposed stainless steel plate.

[0030] This utility model has the following beneficial effects:

[0031] Excellent soil retention effect: Through a multi-fixed support system of "anti-slip baffle + small concrete piers + flat steel tie strips", the roof is divided into stepped compartments and further subdivided to achieve efficient soil retention from multiple directions and effectively ensure soil stability; the small concrete piers significantly enhance the bending resistance of the anti-slip baffle and solve the problem of insufficient rigidity and easy deformation of traditional baffles.

[0032] Excellent water filtration and anti-loss effect: The anti-slip baffle is made of stainless steel unequal side angle steel with rectangular holes, combined with the geotextile laid on the surface to form a double water filtration structure. It can allow rainwater to pass through, but effectively prevents the planting soil from being swept away and sliding down, thus preventing soil loss and protecting the green plant growth environment.

[0033] Excellent waterproof performance: Many connections are pre-embedded (such as the connection between the anti-slip baffle and the roof and the guardrail, and the connection between the support and the flat steel tie strip), avoiding the roof leakage problem caused by traditional drilling and fixing, and improving the waterproof reliability of the pitched roof.

[0034] Convenient and efficient construction: The anti-slip baffle and guardrail are connected by a slotted connection, and the baffles are connected by a single flat interlocking joint. The operation is simple and no additional tools are required, which improves construction efficiency. The hook connects the support and the flat steel tie band to avoid damage to the baffle and ensure the strength of the material.

[0035] High structural stability: All components are firmly connected, with strong overall rigidity and stability, which can adapt to the complex stress environment of steep green roofs and improve the safety and durability of green roofs. Attached Figure Description

[0036] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0037] Figure 1 is a functional system diagram of the anti-slip baffle according to an embodiment of this utility model;

[0038] Figure 2 is a top view of the combined baffle for a steeply sloped planted roof according to an embodiment of this utility model;

[0039] Figure 3 is Figure 2 A three-dimensional placement diagram of the AA cross-section;

[0040] Figure 4 is a detailed view of the baffle components in an embodiment of this utility model;

[0041] Figure 5 is a structural schematic diagram of the anti-slip baffle of an embodiment of this utility model;

[0042] Figure 6 is a structural schematic diagram of a small concrete support pier according to an embodiment of this utility model;

[0043] Figure 7 is a schematic diagram of the flat steel tie strip in an embodiment of this utility model;

[0044] Figure 8 is a detailed cross-sectional view of the connection between the anti-slip baffle and the guardrail in an embodiment of this utility model;

[0045] Figure 9 is a detailed cross-sectional view of the connection between the anti-slip baffles in an embodiment of this utility model;

[0046] Figure 10 This is a flowchart illustrating the construction method of a combined retaining and filtering structure for a steeply sloped green roof, according to an embodiment of this utility model.

[0047] In the attached diagram: 1-Sloping green roof; 2-Anti-slip baffle; 21-Rectangular hole; 22-Stainless steel unequal angle steel; 3-Small concrete support; 31-Stirrup; 32-Longitudinal reinforcement; 33-Hook; 4-Flat steel tie band; 41-Flat steel; 5-Reinforced concrete guardrail; 6-Embedded steel plate; 7-Reinforced concrete roof panel; 8-Card slot type fixed embedded part. Detailed Implementation

[0048] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0049] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0050] In this utility model, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination should be considered non-existent and not within the scope of protection claimed by this utility model.

[0052] The present invention will be further described in detail below with reference to the accompanying drawings.

[0053] Reference Figures 1 to 9 The first aspect of this utility model provides a combined retaining and filtration structure for a steeply sloped green roof, comprising:

[0054] Anti-slip baffle 2 is installed on the steep slope green roof 1. The anti-slip baffle 2 divides the steep slope green roof 1 into multiple stepped compartments. It should be noted that the anti-slip baffle 2 is installed on the steep slope green roof 1 and divides the steep slope green roof 1 into multiple stepped compartments. This can decompose the overall force system into independent force units and improve the soil retention effect.

[0055] Small concrete supports 3 are installed on one side of the anti-slip baffle 2 and abut against the anti-slip baffle 2 to provide support for the anti-slip baffle 2 and enhance its bending resistance. It should be noted that the small concrete supports 3, as the key load-bearing support of the anti-slip baffle 2, significantly enhance the bending resistance of the anti-slip baffle 2 and solve the deformation problem caused by insufficient stiffness.

[0056] The flat steel tie band 4 is vertically connected to the anti-slip baffle 2 and is used to further subdivide the stepped compartments to improve the overall rigidity and stability of the anti-slip baffle 2 in a steep slope environment.

[0057] The pre-embedded components include a pre-embedded steel plate 6 and a slotted fixing pre-embedded part 8. The pre-embedded steel plate 6 is embedded in the concrete structural slab of the steep slope green roof 1. One end of the anti-slip baffle 2 is connected to the pre-embedded steel plate 6 to provide a stable foundation for the anti-slip baffle 2. The slotted fixing pre-embedded part 8 is embedded on the outside of the guardrail of the steep slope green roof 1. The other end of the anti-slip baffle 2 is engaged with the slotted fixing pre-embedded part 8 to ensure accurate connection position, reduce deviation, and ensure overall stability.

[0058] Specifically, in this embodiment, the anti-slip baffle 2 is made of stainless steel unequal angle steel 22, and multiple rectangular holes 21 are opened in the vertical direction of its long side. The rectangular holes 21 serve both as soil retainers and water filters. The surface of the anti-slip baffle 2 is covered with geotextile, which is used to prevent rainwater from carrying planting soil and sliding down through the rectangular holes 21.

[0059] The small concrete support 3 is pre-embedded with hooks 33, and the flat steel tie band 4 is connected to the small concrete support 3 through the hooks 33, abandoning the traditional welding or bolt connection method and avoiding damage to the anti-slip baffle 2 that affects the material strength.

[0060] Specifically, in this embodiment, the long side of the stainless steel unequal angle steel 22 is equal to the thickness of the planting soil. The long side of the stainless steel unequal angle steel 22 is equal to the thickness of the planting soil, and no rectangular holes 21 are provided at its ends to facilitate the connection between the anti-slip baffles 2 and the guardrail.

[0061] Specifically, in this embodiment, multiple rectangular holes 21 are equally spaced along the vertical direction of the long side of the stainless steel unequal-sided angle steel 22.

[0062] Specifically, in this embodiment, the flat steel tie band 4 is made of 3mm thick flat steel 41, which is strong, reliable, and easy to process and install; the geotextile is tightly fitted to the anti-slip baffle 2, and there are no wrinkles during the laying process, and it is fixed with U-shaped nails. The geotextile utilizes its filtering properties to effectively prevent rainwater from sliding down through the rectangular holes 21, carrying planting soil with it, preventing soil loss, and improving the stability of the slope soil.

[0063] Specifically, in this embodiment, the small concrete support pier 3 is provided with longitudinal bars 32 and stirrups 31. The longitudinal bars 32 are connected to the pre-embedded steel bars, which can improve the structural strength and pull-out resistance of the support pier.

[0064] Reference Figure 10 The second aspect of this utility model provides a construction method for a combined retaining and filtering structure for a steeply sloped green roof, comprising the following steps:

[0065] Step S1: Pre-embedded treatment. Before pouring the concrete structural slab of the steep slope planting roof 1, stainless steel plates, steel bars and slotted fixing pre-embedded parts 8 are pre-embedded along the slope direction at a preset interval. The upper surface of the stainless steel plate is flush with the surface of the concrete structural slab to be poured, and the slotted fixing pre-embedded parts 8 are embedded on the outside of the guardrail.

[0066] Step S2: Make anti-slip baffle 2. Select stainless steel unequal angle steel 22 and make rectangular holes 21 at preset intervals in the vertical direction of its long side, and do not make the rectangular holes 21 at the ends of the stainless steel unequal angle steel 22.

[0067] Step S3: Pour concrete structural slabs and guardrails, ensuring the surface of the concrete structural slab is flush with the stainless steel plate during pouring;

[0068] Step S4: Install anti-slip baffle 2. After the concrete structure slab and guardrail reach the design strength, weld one end of the anti-slip baffle 2 to the stainless steel plate. The anti-slip baffle 2 is connected by interlocking joints. The other end of the anti-slip baffle 2 is engaged with the slotted fixed embedded part 8.

[0069] Step S5: Anti-corrosion treatment: After cleaning the surface of the anti-slip baffle 2 and the exposed stainless steel plate, apply anti-corrosion coating.

[0070] Step S6: Pour small concrete support 3, roughen and clean the surface of the concrete structure slab, set up the template at the position of the reinforcing bar and pre-embed the hook 33, pour concrete to form small concrete support 3, so that the long side of the anti-slip baffle 2 abuts against the small concrete support 3.

[0071] Step S7: Lay geotextile. Lay geotextile on the surface of the anti-slip baffle 2 and fix the geotextile with U-shaped nails.

[0072] Step S8: Install the flat steel tie band 4 and connect the flat steel tie band 4 vertically to the small concrete support 3 via the hook 33;

[0073] Step S9: Cover with planting soil and plant greenery.

[0074] Specifically, in this embodiment, in step S4, the interlocking connection between the anti-slip baffles 2 is a single flat interlocking connection.

[0075] Specifically, in this embodiment, in step S1, a level or total station is used to control the elevation of the stainless steel plate.

[0076] Specifically, in this embodiment, in step S5, a grinder or sandblasting equipment is used to clean the surface of the anti-slip baffle 2 and the exposed stainless steel plate.

[0077] Specifically, the technical solution for the construction method of the combined retaining and filtration structure for a steep-slope green roof is further explained below:

[0078] Reference Figure 10 A construction method for a combined retaining and filtering structure for a steeply sloped green roof includes the following steps:

[0079] S1: Pre-embedded treatment: Before pouring the concrete structural slab of the steep-slope green roof 1, stainless steel plates, reinforcing bars, and slotted fixing embedded parts 8 are pre-embedded along the slope direction at preset intervals. The elevation of the stainless steel plates is controlled using a level or total station to ensure that their upper surface is flush with the surface of the concrete structural slab to be poured, providing a stable foundation for the subsequent accurate installation of the anti-slip baffle 2; the pre-embedded reinforcing bars are used for the subsequent fabrication of small concrete supports 3, providing pull-out resistance for the supports; the slotted fixing embedded parts 8 are embedded on the outside of the guardrail for lateral support of the anti-slip baffle 2, preventing rainwater from the sloping roof from seeping into the concrete structural slab.

[0080] S2: To make the anti-slip baffle 2, stainless steel unequal angle steel 22 with the same long side dimension as the planting soil thickness is selected as the raw material. Rectangular holes 21 are punched at equal intervals in the vertical direction of the long side of the unequal angle steel using mechanical processing equipment, so that the anti-slip baffle 2 has both soil-blocking and water-filtering functions. The ends of the baffle are not punched to facilitate the interlocking connection between the anti-slip baffles 2 and the slotted connection with the guardrail.

[0081] S3: Pour concrete structural slabs and guardrails. During pouring, ensure that the surface of the concrete structural slab is flush with the embedded stainless steel plate to guarantee the flatness of the structure.

[0082] S4: Install anti-slip baffle 2. After the concrete structure slab and guardrail are poured and reach the design strength, clean and polish the surface of the embedded stainless steel plate. Weld the short side of the anti-slip baffle 2 firmly to the embedded stainless steel plate using welding technology to ensure connection strength and stability. The anti-slip baffle 2 is connected by a single flat interlocking joint, forming a whole through the mechanical interlocking of metal plates, avoiding material damage and improving on-site production efficiency and strength reliability. The anti-slip baffle 2 and the guardrail are connected by a slotted connection, which is simple to operate, requires no additional tools, improves construction efficiency and safety, and facilitates later replacement or maintenance.

[0083] S5: Anti-corrosion treatment. Use a grinder or sandblasting equipment to clean the surface of the anti-slip baffle 2 and the exposed stainless steel plate to expose the metallic luster. Then, apply anti-corrosion coating to the entire structure to improve the corrosion resistance and service life of the structure.

[0084] S6: Pour small concrete supports 3, roughen and clean the surface of the concrete structure slab, set up formwork at the position of the pre-embedded steel bars and pre-embed hooks 33 (for fixing the subsequent flat steel tie bands 4), and then pour concrete to form small concrete supports 3; make the long side of the anti-slip baffle 2 closely rest on the newly poured small concrete supports 3, and use the supports to enhance the bending resistance of the anti-slip baffle 2 and prevent it from bending and deforming under stress.

[0085] S7: Lay geotextile. Lay geotextile on the entire surface of the installed anti-slip baffle 2, ensuring that the geotextile is flat, wrinkle-free and tightly attached to the anti-slip baffle 2. Fix it with U-shaped nails and use the filtering properties of geotextile to prevent rainwater from carrying the planting soil down.

[0086] S8: Install flat steel tie band 4. Use 3mm thick flat steel 41 to make tie band. Connect the flat steel tie band 4 vertically to the small concrete support 3 through the pre-embedded hook 33 to further enhance the overall rigidity and stability of the anti-slip baffle 2 and improve the structure's ability to withstand soil pressure and other external forces in a steep slope environment.

[0087] S9: Cover with nutrient soil and planting soil, and plant greenery to complete the construction of the steep slope green roof 1.

[0088] The present invention will be further described below with reference to specific embodiments:

[0089] Example:

[0090] Reference Figures 1 to 10 A combined retaining and filtering structure for a steeply sloped planted roof includes an anti-slip baffle 2, small concrete supports 3, flat steel tie strips 4, embedded components, and geotextile.

[0091] The anti-slip baffle 2 is made of stainless steel unequal angle steel 22 with a long side dimension of 300mm (equal to the thickness of the planting soil). Rectangular holes 21 with a length of 100mm and a width of 50mm are opened at equal intervals (200mm interval) in the vertical direction of its long side. No rectangular holes 21 are provided within 100mm of the end of the baffle.

[0092] The small concrete support pier 3 has a cross-sectional dimension of 200mm×200mm, and its height is the same as the long side dimension of the anti-slip baffle 2. The support pier is equipped with 4 longitudinal bars 32 with a diameter of 12mm and stirrups 31 with a diameter of 8mm and a spacing of 100mm. The longitudinal bars 32 are welded to the pre-embedded steel bars. The top of the support pier is pre-embedded with hooks 33 with a diameter of 10mm.

[0093] The flat steel tie band 4 is made of flat steel 41 with a thickness of 3mm and a width of 50mm.

[0094] In the pre-embedded components, the pre-embedded steel plate 6 is made of stainless steel plate with a thickness of 8mm, and one is set every 2m along the slope direction; the slot-type fixed pre-embedded part 8 is made of steel plate with a thickness of 5mm and is embedded on the outside of the reinforced concrete guardrail 5.

[0095] The geotextile is a 200g / m² non-woven geotextile, which is laid in close contact with the anti-slip baffle 2 and fixed with U-shaped nails with a length of 150mm.

[0096] The construction method for the above structure includes the following steps:

[0097] S1: Pre-embedded treatment: Before pouring the concrete structure slab, pre-embed an 8mm thick stainless steel plate 6 every 2m along the slope direction, and use a level to control its elevation to ensure that the upper surface is flush with the surface of the concrete to be poured; simultaneously pre-embed 12mm diameter steel bars (spaced 2m) for the construction of small concrete supports 3; pre-embed slot-type fixed pre-embedded parts 8 on the outside of the reinforced concrete guardrail 5.

[0098] S2: To make the anti-slip baffle 2, select a stainless steel unequal angle steel 22 with a long side of 300mm, and use a punch press to punch rectangular holes 21 of 100mm×50mm at 200mm intervals in the vertical direction of its long side. Do not punch holes within 100mm of the end.

[0099] S3: Pour reinforced concrete roof slab 7 and reinforced concrete guardrail 5, ensuring that the surface of roof slab 7 is flush with the embedded stainless steel plate 6 during pouring.

[0100] S4: Install anti-slip baffle 2. After the concrete strength reaches 70% of the design strength, clean the surface of the embedded stainless steel plate 6, and weld the short side of the anti-slip baffle 2 to the stainless steel plate 6 (weld height 6mm); the baffles are connected by a single flat interlocking joint; the other end of the baffle is connected to the slotted fixed embedded part 8.

[0101] S5: Anti-corrosion treatment: The anti-slip baffle 2 and the exposed stainless steel plate 6 are cleaned by sandblasting equipment, and then epoxy zinc-rich primer (dry film thickness 60μm) and polyurethane topcoat (dry film thickness 80μm) are applied.

[0102] S6: Pour small concrete support 3, roughen the surface of roof panel 7, set up a 200mm×200mm template at the position of the pre-embedded steel bar, pre-embed hooks 33 with a diameter of 10mm, pour C30 concrete, so that the long side of the anti-slip baffle 2 leans against the support 3.

[0103] S7: Lay geotextile. Lay 200g / m² non-woven geotextile on the surface of anti-slip baffle 2, ensuring no wrinkles, and fix it with 150mm long U-shaped nails at 1m intervals.

[0104] S8: Install flat steel tie strap 4, and vertically connect the 3mm thick and 50mm wide flat steel 41 to the small concrete support 3 through the hook 33. The hook 33 and the flat steel 41 are fixed by binding.

[0105] S9: Cover with 300mm thick planting soil (including 100mm thick nutrient soil) and plant drought-resistant green plants such as Sedum lineare.

[0106] This embodiment achieves efficient soil retention and reasonable water filtration for steep-slope green roofs through the above-described structure and construction method, solving problems such as water leakage, insufficient rigidity, and soil erosion in traditional structures, and ensuring the safety and ecological benefits of green roofs.

[0107] This invention has the following significant advantages over the prior art:

[0108] Excellent soil retention effect: Through a multi-fixed support system of "anti-slip baffle + small concrete piers + flat steel tie strips", the roof is divided into stepped compartments and further subdivided to achieve efficient soil retention from multiple directions and effectively ensure soil stability; the small concrete piers significantly enhance the bending resistance of the anti-slip baffle and solve the problem of insufficient rigidity and easy deformation of traditional baffles.

[0109] Excellent water filtration and anti-loss effect: The anti-slip baffle is made of stainless steel unequal side angle steel with rectangular holes, combined with the geotextile laid on the surface to form a double water filtration structure. It can allow rainwater to pass through, but effectively prevents the planting soil from being swept away and sliding down, thus preventing soil loss and protecting the green plant growth environment.

[0110] Excellent waterproof performance: Many connections are pre-embedded (such as the connection between the anti-slip baffle and the roof and the guardrail, and the connection between the support and the flat steel tie strip), avoiding the roof leakage problem caused by traditional drilling and fixing, and improving the waterproof reliability of the pitched roof.

[0111] Convenient and efficient construction: The anti-slip baffle and guardrail are connected by a slotted connection, and the baffles are connected by a single flat interlocking joint. The operation is simple and no additional tools are required, which improves construction efficiency. The hook connects the support and the flat steel tie band to avoid damage to the baffle and ensure the strength of the material.

[0112] High structural stability: All components are firmly connected, with strong overall rigidity and stability, which can adapt to the complex stress environment of steep green roofs and improve the safety and durability of green roofs.

[0113] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A combined retaining and filtration structure for a steeply sloped green roof, characterized in that, include: Anti-slip baffles are installed on steep-slope green roofs, dividing the steep-slope green roofs into multiple stepped compartments; Small concrete supports are installed on one side of the anti-slip baffle and abut against the anti-slip baffle; Flat steel tie strips are vertically connected to the anti-slip baffle to further subdivide the stepped compartments. The embedded component includes an embedded steel plate and a slotted fixing embedded part. The embedded steel plate is embedded in the concrete structural slab of the steep slope green roof, and one end of the anti-slip baffle is connected to the embedded steel plate. The slotted fixing embedded part is embedded on the outside of the guardrail of the steep slope green roof, and the other end of the anti-slip baffle is engaged with the slotted fixing embedded part.

2. The combined retaining and filtration structure for steep-slope green roofs according to claim 1, characterized in that: The anti-slip baffle is made of stainless steel unequal angle steel, and has multiple rectangular holes opened in the vertical direction of its long side; the surface of the anti-slip baffle is covered with geotextile, which is used to prevent rainwater from carrying planting soil and sliding down through the rectangular holes.

3. The combined retaining and filtration structure for steep slope green roofs according to claim 1, characterized in that: The small concrete support is pre-embedded with hooks, and the flat steel tie band is connected to the small concrete support through the hooks.

4. The combined retaining and filtration structure for steep-slope green roofs according to claim 2, characterized in that: The long side of the stainless steel unequal angle steel is equal to the thickness of the planting soil.

5. The combined retaining and filtration structure for steep-slope green roofs according to claim 2, characterized in that: The rectangular holes are evenly spaced along the vertical direction of the long side of the stainless steel unequal-sided angle steel.

6. The combined retaining and filtration structure for steep-slope green roofs according to claim 2, characterized in that: The flat steel tie band is made of 3mm thick flat steel; the geotextile is tightly fitted to the anti-slip baffle and there are no wrinkles during the laying process.

7. The combined retaining and filtration structure for steep slope green roofs according to claim 1, characterized in that: The small concrete support is equipped with longitudinal bars and stirrups, and the longitudinal bars are connected to the pre-embedded steel bars.

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