Combined soil retaining and water filtering structure of large-gradient planting roof and construction method of combined soil retaining and water filtering structure

Abstract

The invention discloses a combined soil retaining and water filtering structure of a large-gradient planting roof and a construction method of the combined soil retaining and water filtering structure, and belongs to the technical field of planting roofs. The structure comprises anti-skid baffles, small concrete buttresses, flat steel tie belts, pre-embedded assemblies and geotechnical cloth. The anti-skid baffle adopts stainless steel unequal angle steel with rectangular holes and is fixed with the clamping groove type embedded part through an embedded steel plate, and geotechnical cloth is laid on the surface of the anti-skid baffle; the small concrete buttresses support the baffles to enhance the bending resistance, and the flat steel tie belts are connected with the buttresses through the drag hooks to subdivide the compartments. The construction method comprises the steps of pre-embedding treatment, baffle manufacturing, pouring installation, corrosion prevention, geotextile laying and the like. Efficient soil retaining and reasonable water filtering are achieved, the problems of water leakage, insufficient rigidity and soil loss of a traditional structure are solved, and the planting roof safety and ecological benefits are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of planted roofs, and in particular to a combined soil retaining and water filtering structure for a large-slope planted roof and a construction method thereof. Background Art

[0002] With the acceleration of urbanization and the increasing demand for ecological protection, the integrated utilization of building space has become a key development direction. Planted slope roofs have emerged as an innovative form of integration between architecture and nature. They break the limitations of traditional roofs' single function by creating rich green landscapes using three-dimensional space. They combine ecological benefits with aesthetic value. They not only effectively mitigate the urban heat island effect and reduce building energy consumption, but also provide thermal insulation, and are therefore gaining increasing attention.

[0003] In steeply sloped planted roof projects, traditional retaining structures struggle to simultaneously meet the dual functional requirements of efficient soil retention and water filtration. Existing anti-slip retaining panels present numerous problems: First, they are often fixed using drilling, which severely impacts the waterproofing of sloped roofs and can easily lead to leaks. Second, they lack inherent rigidity and are prone to bending and deformation under soil pressure, reducing their retaining effectiveness and making it difficult to ensure soil stability. Third, they lack a sound water filtration design, allowing rainwater to carry the planted soil down the slope, causing soil erosion, damaging the ecological environment, and impacting plant growth. While some structures have attempted to address these issues by installing support or filtration layers, the results have been less than ideal, making it difficult to achieve an organic balance between structural stability and water filtration.

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

[0005] The purpose of the present invention is to solve the problems that the existing anti-slip baffles are prone to water leakage, insufficient rigidity and easy bending and deformation in large-slope planting roofs, and cannot effectively prevent soil sliding and soil loss. It provides a combined soil retaining and water filtration structure for large-slope planting roofs and its construction method, so as to achieve reasonable filtration and discharge of rainwater, ensure the stability of the planting roof soil and the safety of the green plant growth environment.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A first aspect of the present invention provides a combined soil retaining and water filtration structure for a steeply sloped planted roof, comprising: an anti-slip baffle provided on the steeply sloped planted roof, the anti-slip baffle dividing the steeply sloped planted roof into a plurality of stepped compartments;

[0008] A small concrete pier is provided on one side of the anti-slip baffle, abutting against the anti-slip baffle, and is used to provide support for the anti-slip baffle to enhance its bending resistance;

[0009] A flat steel tie strap is vertically connected to the anti-slip baffle and is 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 slot-type fixed embedded part. The embedded steel plate is embedded in the concrete structural plate of the steep slope planting roof, and one end of the anti-slip baffle is connected to the embedded steel plate; the slot-type fixed embedded part is embedded outside the guardrail of the steep slope planting roof, and the other end of the anti-slip baffle is clipped to the slot-type fixed embedded part.

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

[0012] A draw hook is pre-embedded on the small concrete buttress, and the flat steel tie belt is connected to the small concrete buttress via the draw hook.

[0013] As a further improvement to the technical solution of the present invention, the long side size 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 the present invention, the plurality of rectangular holes are arranged at equal intervals in a direction perpendicular to the long side of the stainless steel unequal-leg angle steel.

[0015] As a further improvement to the technical solution of the present invention, the flat steel tie belt is made of 3 mm thick flat steel; the geotextile fits tightly with the anti-slip baffle and has no wrinkles during the laying process.

[0016] As a further improvement to the technical solution of the present invention, longitudinal reinforcement and stirrups are provided in the small concrete pier, and the longitudinal reinforcement is connected to the pre-buried steel bars.

[0017] A second aspect of the present invention provides a construction method for a combined retaining and water filtration structure for a large-slope planted roof, comprising the following steps:

[0018] Step S1: Pre-embedding treatment: Before pouring the concrete structural slab of the steep slope green roof, stainless steel plates, steel bars and slot-type fixed embedded parts are pre-embedded along the slope at preset intervals. The upper surface of the stainless steel plate is flush with the surface of the concrete structural slab to be poured, and the slot-type fixed embedded parts are buried outside the guardrail;

[0019] Step S2: Making an anti-slip baffle, selecting stainless steel unequal angle steel, and opening rectangular holes at a preset interval in the vertical direction of the long side of the stainless steel unequal angle steel, and not opening the rectangular holes at the ends of the stainless steel unequal angle steel;

[0020] Step S3: pouring the concrete structure slab and the guardrail, making the surface of the concrete structure slab flush with the stainless steel plate during pouring;

[0021] Step S4: Installing an anti-slip baffle. After the concrete structural slab and the guardrail reach the designed strength, one end of the anti-slip baffle is welded to the stainless steel plate. The anti-slip baffles are connected by a bite joint, and the other end of the anti-slip baffle is clamped to the slot-type fixed embedded part.

[0022] Step S5: Anti-corrosion treatment: After decontamination treatment is performed on the anti-slip baffle and the exposed surface of the stainless steel plate, anti-corrosion paint is applied;

[0023] Step S6: pouring small concrete piers, roughening and cleaning the surface of the concrete structural slab, setting up a formwork at the position of the steel bars and pre-embedding a hook, pouring concrete to form small concrete piers, so that the long side of the anti-slip baffle abuts against the small concrete piers;

[0024] Step S7: laying geotextile, laying the geotextile on the surface of the anti-slip baffle, and fixing the geotextile with U-shaped nails;

[0025] Step S8: installing a flat steel tie belt, and vertically connecting the flat steel tie belt to the small concrete pier through the hook;

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

[0027] As a further improvement to the technical solution of the present invention, in step S4, the bite connection between the anti-slip baffles is a single flat bite connection.

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

[0029] As a further improvement to the technical solution of the present invention, in step S5, a grinding machine or sandblasting equipment is used to perform decontamination treatment on the anti-slip baffle and the exposed surface of the stainless steel plate.

[0030] The present invention has the following beneficial effects:

[0031] Excellent soil retaining effect: Through the multi-fixed support system of "anti-slip baffle + small concrete pier + flat steel tie belt", the roof is divided into stepped compartments and further subdivided, realizing multi-directional and efficient soil retaining and effectively ensuring soil stability; the small concrete pier significantly enhances the bending resistance of the anti-slip baffle, solving the problem of insufficient rigidity and easy deformation of traditional baffles.

[0032] Good water filtration and anti-loss effect: the anti-slip baffle adopts stainless steel unequal-angle steel with rectangular holes, combined with the geotextile laid on the surface to form a double water filtration structure, which can not only allow rainwater to pass through, but also effectively prevent the planting soil from being swept down, prevent soil loss, and protect the growth environment of green plants.

[0033] Excellent waterproof performance: Many connections are pre-buried (such as the connection between the anti-slip baffle and the roof and guardrail, and the connection between the pier and the flat steel tie strap), avoiding roof leakage problems caused by traditional drilling fixation and improving the waterproof reliability of the sloping roof.

[0034] Convenient and efficient construction: the anti-slip baffle and guardrail are connected by a slot-type connection, and the baffles are connected by a single flat bite, which is simple to operate and does not require additional tools, thereby improving construction efficiency; the hook connects the pier and the flat steel tie belt to avoid damage to the baffle and ensure material strength.

[0035] High structural stability: All components are firmly connected, with strong overall rigidity and stability. It can adapt to the complex stress environment of large-slope green roofs and improve the safety and durability of green roofs. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0037] FIG1 is a functional system diagram of an anti-slip baffle according to an embodiment of the present invention;

[0038] FIG2 is a top view of a combined baffle for a large-slope planted roof according to an embodiment of the present invention;

[0039] Figure 3 shows Figure 2 Schematic diagram of the three-dimensional placement of the AA section;

[0040] FIG4 is a detailed diagram of a baffle assembly according to an embodiment of the present invention;

[0041] FIG5 is a schematic structural diagram of an anti-slip baffle according to an embodiment of the present invention;

[0042] FIG6 is a schematic structural diagram of a small concrete pier according to an embodiment of the present invention;

[0043] FIG7 is a schematic structural diagram of a flat steel tie strap according to an embodiment of the present invention;

[0044] FIG8 is a cross-sectional view of the connection between the anti-slip baffle and the guardrail according to an embodiment of the present invention;

[0045] FIG9 is a schematic diagram of a cross-section of the connection between anti-slip baffles according to an embodiment of the present invention;

[0046] Figure 10This is a flow chart of a construction method for a combined retaining and water filtration structure on a large-slope planted roof according to an embodiment of the present invention.

[0047] In the attached figure: 1-steep slope planting roof; 2-anti-slip baffle; 21-rectangular hole; 22-stainless steel unequal-leg angle steel; 3-small concrete pier; 31-stirrup; 32-longitudinal reinforcement; 33-hook; 4-flat steel tie belt; 41-flat steel; 5-reinforced concrete guardrail; 6-embedded steel plate; 7-reinforced concrete roof panel; 8-slot-type fixed embedded parts. DETAILED DESCRIPTION

[0048] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The exemplary 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 indications in the embodiments of the present invention (such as up, down, left, right, front, back, upper end, lower end, top, bottom...) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] In the present invention, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, "connection" can mean fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two elements, or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0051] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include at least one such feature. Furthermore, the technical solutions of various embodiments may be combined with each other, but only on the basis that they can be implemented by a person of ordinary skill in the art. If the combination of technical solutions contradicts or cannot be implemented, it shall be deemed that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this disclosure.

[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 the present invention provides a combined soil retaining and water filtration structure for a large-slope planted roof, comprising:

[0054] The anti-slip baffle 2 is arranged on the steep planting roof 1, and the anti-slip baffle 2 divides the steep planting roof 1 into a plurality of stepped compartments; it should be noted that the anti-slip baffle 2 is arranged on the steep planting roof 1, and divides the steep planting roof 1 into a plurality of stepped compartments, which can decompose the overall force system into independent force units and improve the soil retaining effect.

[0055] A small concrete pier 3 is arranged on one side of the anti-slip baffle 2 and abuts against the anti-slip baffle 2, and is used to provide support for the anti-slip baffle 2 to enhance its bending resistance. It should be noted that the small concrete pier 3 serves as the key force support of the anti-slip baffle 2, significantly enhancing the bending resistance of the anti-slip baffle 2 and solving the deformation problem caused by insufficient rigidity.

[0056] The flat steel tie strap 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 large slope environment.

[0057] The embedded components include embedded steel plates 6 and slot-type fixed embedded parts 8. The embedded steel plates 6 are embedded in the concrete structural slab of the steep slope planting roof 1. One end of the anti-slip baffle 2 is connected to the embedded steel plate 6 to provide a solid foundation for the anti-slip baffle 2. The slot-type fixed embedded parts 8 are embedded outside the guardrail of the steep slope planting roof 1. The other end of the anti-slip baffle 2 is snapped into the slot-type fixed embedded parts 8 to ensure the accuracy of the connection position, reduce deviation, and ensure overall stability.

[0058] Specifically, in this embodiment, the anti-slip baffle 2 is made of stainless steel unequal-leg angle steel 22, and a plurality of rectangular holes 21 are opened in the vertical direction of its long side, and the rectangular holes 21 have both soil retaining and water filtering functions; the surface of the anti-slip baffle 2 is paved with geotextile, and the geotextile is used to prevent rainwater from carrying the planting soil and sliding down through the rectangular holes 21.

[0059] A hook 33 is pre-embedded on the small concrete pier 3, and the flat steel tie belt 4 is connected to the small concrete pier 3 through the hook 33, abandoning the traditional welding or bolt connection method, avoiding damage to the anti-slip baffle 2 and affecting 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 the rectangular hole 21 is not provided at the end to facilitate the connection between the anti-slip baffles 2 and the guardrail.

[0061] Specifically, in this embodiment, the plurality of rectangular holes 21 are arranged at equal intervals in a direction perpendicular to the long sides of the stainless steel unequal-leg angle steel 22 .

[0062] Specifically, in this embodiment, the flat steel tie straps 4 are made of 3mm-thick flat steel 41, which provides reliable strength and is easy to process and install. The geotextile fabric fits snugly against the anti-slip baffle 2, wrinkle-free during installation, and is secured with U-shaped staples. The geotextile's filtering properties effectively prevent rainwater from sliding down through the rectangular holes 21, dragging the planting soil with it and thus preventing soil erosion and improving slope stability.

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

[0064] Reference Figure 10 The second aspect of the present invention provides a construction method for a combined retaining and water filtration structure for a large-slope planted roof, comprising the following steps:

[0065] Step S1: Pre-embedding treatment: before pouring the concrete structural slab of the steep slope green roof 1, stainless steel plates, steel bars and slot-type fixed embedded parts 8 are pre-embedded at preset intervals along the slope direction. The upper surface of the stainless steel plates is flush with the surface of the concrete structural slab to be poured, and the slot-type fixed embedded parts 8 are buried outside the guardrail;

[0066] Step S2: Making the anti-slip baffle 2, selecting a stainless steel unequal angle steel 22, and opening rectangular holes 21 at a preset interval in the vertical direction of the long side of the stainless steel unequal angle steel 22, and not opening the rectangular holes 21 at the ends of the stainless steel unequal angle steel 22;

[0067] Step S3: pouring the concrete structure slab and the guardrail, making the surface of the concrete structure slab flush with the stainless steel plate during pouring;

[0068] Step S4: Install the anti-slip baffle 2. After the concrete structure slab and the guardrail reach the designed strength, weld one end of the anti-slip baffle 2 to the stainless steel plate. The anti-slip baffles 2 are connected by bite joints. The other end of the anti-slip baffle 2 is clamped to the slot-type fixed embedded part 8.

[0069] Step S5: Anti-corrosion treatment: After decontamination treatment is performed on the anti-slip baffle 2 and the exposed surface of the stainless steel plate, anti-corrosion paint is applied;

[0070] Step S6: Casting small concrete piers 3, roughening and cleaning the surface of the concrete structural slab, setting up a template at the position of the steel bars and pre-embedding hooks 33, and casting concrete to form small concrete piers 3, so that the long side of the anti-slip baffle 2 abuts against the small concrete piers 3;

[0071] Step S7: laying geotextile, laying geotextile on the surface of the anti-slip baffle 2, and fixing the geotextile with U-shaped nails;

[0072] Step S8: Install the flat steel tie belt 4 and vertically connect the flat steel tie belt 4 to the small concrete pier 3 through the hook 33;

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

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

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

[0076] Specifically, in this embodiment, in step S5, a grinding machine or sandblasting equipment is used to perform decontamination treatment on the anti-slip baffle 2 and the exposed surface of the stainless steel plate.

[0077] Specifically, the technical solution of the construction method of a combined retaining and water filtration structure for a large-slope planted roof of the present invention is further described:

[0078] Reference Figure 10 A construction method for a combined retaining and water filtration structure for a large-slope planted roof comprises the following steps:

[0079] S1: Pre-embedded: Before pouring the concrete slab of the steeply sloped green roof 1, stainless steel plates, rebar, and slot-type fixed embedded parts 8 are pre-embedded along the slope at preset intervals. A level or total station is used to control the elevation of the stainless steel plates, ensuring their top surface is flush with the concrete slab to be poured. This provides a stable foundation for the subsequent precise installation of the anti-slip baffle 2. The pre-embedded rebar is used to create the small concrete buttresses 3, providing pullout resistance. The slot-type fixed embedded parts 8 are embedded outside the guardrail to provide lateral support for the anti-slip baffle 2, preventing rainwater from the sloped roof from penetrating the concrete slab.

[0080] S2: To make an anti-slip baffle 2, select stainless steel unequal-leg angle steel 22 with a long side size equal to the thickness of the planting soil as the raw material, and use mechanical processing equipment to punch out rectangular holes 21 at equal intervals in the vertical direction of the long side of the unequal-leg angle steel, so that the anti-slip baffle 2 has both soil retaining and water filtering functions; the baffle ends are not punched to facilitate the bite connection between the anti-slip baffles 2 and the slot-type connection with the guardrail.

[0081] S3: Cast the concrete structural slab and guardrail. During casting, ensure that the surface of the concrete structural slab is flush with the embedded stainless steel plate to ensure the flatness of the structure.

[0082] S4: Install the anti-slip baffle 2. After the concrete structure plate and guardrail are poured and reach the designed 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 a welding process to ensure the connection strength and stability. The anti-slip baffles 2 are connected by a single flat bite, and the metal plates are mechanically bitten to form a whole, which avoids material damage and improves on-site production efficiency and strength reliability. The anti-slip baffle 2 and the guardrail are connected by a slot type, which is simple to operate and does not require additional tools, thereby improving construction efficiency and safety and facilitating later replacement or maintenance.

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

[0084] S6: Cast small concrete piers 3, roughen and clean the surface of the concrete structural slab, set up a template at the embedded steel bar position and embed a hook 33 (for subsequent fixation of the flat steel tie band 4), and then cast concrete to form small concrete piers 3; make the long side of the anti-slip baffle 2 lean closely against the newly cast small concrete piers 3, and use the piers to enhance the bending resistance of the anti-slip baffle 2 to prevent it from bending and deformation under stress.

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

[0086] S8: Install the flat steel tie strap 4. Use 3mm thick flat steel 41 to make the tie strap. Vertically connect the flat steel tie strap 4 to the small concrete pier 3 through the pre-buried 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 large slope environment.

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

[0088] The present invention will be further described below in conjunction with specific embodiments:

[0089] Example:

[0090] Reference Figures 1 to 10 A combined soil retaining and water filtration structure for a large-slope planting roof includes an anti-slip baffle 2, a small concrete pier 3, a flat steel tie belt 4, embedded components, and a geotextile.

[0091] The anti-slip baffle 2 is made of stainless steel unequal-leg 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 (spacing 200mm) in the vertical direction of its long side. There is no rectangular hole 21 within 100mm of the baffle end.

[0092] The cross-sectional dimensions of the small concrete pier 3 are 200mm×200mm, and the height is consistent with the long side dimension of the anti-slip baffle 2; four longitudinal bars 32 with a diameter of 12mm and stirrups 31 with a diameter of 8mm and a spacing of 100mm are provided in the pier, and the longitudinal bars 32 are welded to the embedded steel bars; a hook 33 with a diameter of 10mm is embedded on the top of the pier.

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

[0094] Among the embedded components, the embedded steel plate 6 is made of 8mm thick stainless steel plate, and is set every 2m along the slope direction; the slot-type fixed embedded parts 8 are made of 5mm thick steel plate and are embedded outside the reinforced concrete guardrail 5.

[0095] The geotextile is a 200g / m² non-woven geotextile. When laying, it should fit closely with the anti-slip baffle 2 and be fixed with U-shaped nails with a length of 150mm.

[0096] The construction method of the above structure comprises the following steps:

[0097] S1: Pre-embedded treatment: Before pouring the concrete structure slab, embed an 8mm thick stainless steel plate 6 every 2m along the slope direction. 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 embed 12mm diameter steel bars (at intervals of 2m) for the production of small concrete piers 3; and embed slot-type fixed embedded parts 8 on the outside of the reinforced concrete guardrail 5.

[0098] S2: Make the anti-slip baffle 2. Select stainless steel unequal-leg angle steel 22 with a long side of 300mm. Use a punch press to punch out 100mm×50mm rectangular holes 21 at a spacing of 200mm in the vertical direction of its long side. Do not punch holes within 100mm of the end.

[0099] S3: Cast the reinforced concrete roof panel 7 and the reinforced concrete guardrail 5. When casting, ensure that the surface of the roof panel 7 is flush with the embedded stainless steel plate 6.

[0100] S4: Install the 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 with a single flat bite. The other end of the baffle is snapped into the slot-type fixed embedded part 8.

[0101] S5: Anti-corrosion treatment: Use sandblasting equipment to decontaminate the surface of the anti-slip baffle 2 and the exposed stainless steel plate 6, and then apply epoxy zinc-rich primer (dry film thickness 60μm) and polyurethane topcoat (dry film thickness 80μm).

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

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

[0104] S8: Install the flat steel tie belt 4, vertically connect the 3mm thick and 50mm wide flat steel 41 to the small concrete pier 3 through the hook 33, and fix the hook 33 and the flat steel 41 by binding.

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

[0106] Through the above-mentioned structure and construction method, this embodiment achieves efficient soil retaining and reasonable water filtration for large-slope planted roofs, solves problems such as water leakage, insufficient rigidity, and soil loss in traditional structures, and ensures the safety and ecological benefits of the planted roofs.

[0107] Compared with the prior art, the present invention has the following significant advantages:

[0108] Excellent soil retaining effect: Through the multi-fixed support system of "anti-slip baffle + small concrete pier + flat steel tie belt", the roof is divided into stepped compartments and further subdivided, realizing multi-directional and efficient soil retaining and effectively ensuring soil stability; the small concrete pier significantly enhances the bending resistance of the anti-slip baffle, solving the problem of insufficient rigidity and easy deformation of traditional baffles.

[0109] Good water filtration and anti-loss effect: the anti-slip baffle adopts stainless steel unequal-angle steel with rectangular holes, combined with the geotextile laid on the surface to form a double water filtration structure, which can not only allow rainwater to pass through, but also effectively prevent the planting soil from being swept down, prevent soil loss, and protect the growth environment of green plants.

[0110] Excellent waterproof performance: Many connections are pre-buried (such as the connection between the anti-slip baffle and the roof and guardrail, and the connection between the pier and the flat steel tie strap), avoiding roof leakage problems caused by traditional drilling fixation and improving the waterproof reliability of the sloping roof.

[0111] Convenient and efficient construction: the anti-slip baffle and guardrail are connected by a slot-type connection, and the baffles are connected by a single flat bite, which is simple to operate and does not require additional tools, thereby improving construction efficiency; the hook connects the pier and the flat steel tie belt to avoid damage to the baffle and ensure material strength.

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

[0113] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A combined retaining and water filtration structure for a large-slope planted roof, characterized in that: include: An anti-slip baffle is provided on the steeply sloped planted roof, and the anti-slip baffle divides the steeply sloped planted roof into a plurality of stepped compartments; A small concrete pier is provided on one side of the anti-slip baffle and abuts against the anti-slip baffle; A flat steel tie strap, vertically connected to the anti-slip baffle, for further subdividing the stepped compartments; The embedded component includes an embedded steel plate and a slot-type fixed embedded part. The embedded steel plate is embedded in the concrete structural plate of the steep slope planting roof, and one end of the anti-slip baffle is connected to the embedded steel plate; the slot-type fixed embedded part is embedded outside the guardrail of the steep slope planting roof, and the other end of the anti-slip baffle is clipped to the slot-type fixed embedded part.

2. The combined soil retaining and water filtration structure for a large-slope planted roof according to claim 1 is characterized by: The anti-slip baffle is made of stainless steel unequal angle steel, and a plurality of rectangular holes are opened in the vertical direction of the 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; A draw hook is pre-embedded on the small concrete buttress, and the flat steel tie belt is connected to the small concrete buttress via the draw hook.

3. The combined soil retaining and water filtration structure for a large-slope planted roof according to claim 2 is characterized by: The long side size of the stainless steel unequal angle steel is equal to the thickness of the planting soil.

4. The combined soil retaining and water filtration structure for a large-slope planted roof according to claim 2 is characterized by: The plurality of rectangular holes are arranged at equal intervals in a direction perpendicular to the long side of the stainless steel unequal-leg angle steel.

5. The combined soil retaining and water filtration structure for a large-slope planted roof according to claim 2 is characterized by: The flat steel tie belt is made of 3mm thick flat steel; the geotextile fits tightly with the anti-slip baffle and has no wrinkles during the laying process.

6. The combined soil retaining and water filtration structure for a large-slope planted roof according to claim 1 is characterized by: Longitudinal reinforcement and stirrups are arranged in the small concrete pier, and the longitudinal reinforcement is connected to the pre-buried steel bars.

7. A construction method for a combined retaining and water filtration structure for a large-slope planted roof, characterized in that: The following steps are involved: Step S1: Pre-embedding treatment: Before pouring the concrete structural slab of the steep slope green roof, stainless steel plates, steel bars and slot-type fixed embedded parts are pre-embedded along the slope at preset intervals. The upper surface of the stainless steel plate is flush with the surface of the concrete structural slab to be poured, and the slot-type fixed embedded parts are buried outside the guardrail; Step S2: Making an anti-slip baffle, selecting stainless steel unequal angle steel, and opening rectangular holes at a preset interval in the vertical direction of the long side of the stainless steel unequal angle steel, and not opening the rectangular holes at the ends of the stainless steel unequal angle steel; Step S3: pouring the concrete structure slab and the guardrail, making the surface of the concrete structure slab flush with the stainless steel plate during pouring; Step S4: Installing an anti-slip baffle. After the concrete structural slab and the guardrail reach the designed strength, one end of the anti-slip baffle is welded to the stainless steel plate. The anti-slip baffles are connected by a bite joint, and the other end of the anti-slip baffle is clamped to the slot-type fixed embedded part. Step S5: Anti-corrosion treatment: After decontamination treatment is performed on the anti-slip baffle and the exposed surface of the stainless steel plate, anti-corrosion paint is applied; Step S6: pouring small concrete piers, roughening and cleaning the surface of the concrete structural slab, setting up a formwork at the position of the steel bars and pre-embedding a hook, pouring concrete to form small concrete piers, so that the long side of the anti-slip baffle abuts against the small concrete piers; Step S7: laying geotextile, laying the geotextile on the surface of the anti-slip baffle, and fixing the geotextile with U-shaped nails; Step S8: installing a flat steel tie belt, and vertically connecting the flat steel tie belt to the small concrete pier through the hook; Step S9: Cover with planting soil and plant green plants.

8. The construction method of the combined soil retaining and water filtration structure for a large-slope planted roof according to claim 6 is characterized by: In step S4, the bite connection between the anti-slip baffles is a single flat bite connection.

9. The construction method of the combined soil retaining and water filtration structure for a large-slope planted roof according to claim 6 is characterized by: In step S1, a level or a total station is used to control the elevation of the stainless steel plate.

10. The construction method of the combined soil retaining and water filtration structure for a large-slope planted roof according to claim 6 is characterized by: In step S5, a grinding machine or sandblasting equipment is used to perform decontamination treatment on the anti-slip baffle and the exposed surface of the stainless steel plate.

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