Planted roof arrangement structure
By incorporating drainage channels and filter racks into the structural slabs of the green roof, the problems of low drainage efficiency and clogging in green roofs have been solved, achieving rapid drainage and long-term stability, and providing a good environment for plant growth.
Patent Information
- Application Number
- CN202511239549.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-01
- Publication Date
- 2026-01-13
AI Technical Summary
Existing green roof drainage systems are inefficient during heavy rain, are easily affected by the planting soil and plant roots, and have simple filtration devices that lead to blockages in drainage pipes and outlets, failing to effectively intercept soil particles and plant debris.
Design a green roof layout structure, including a structural slab, a waterproof layer, a drainage layer, a planting soil layer, and a filter rack. The structural slab has a through-drainage channel. The filter rack surrounds and forms a drainage cavity and is filled with filter material. The filter layer has curved filter gaps. The filter layer is connected to the planting soil layer. The filter cavity is connected to the drainage cavity. The filter material is crushed stone. The height of the filter layer is higher than that of the planting soil layer. The top opening is connected to the drainage channel.
It enables rapid drainage of water from green roofs, reduces water retention time, enhances the stability and filtration effect of the drainage system, effectively blocks soil particles and plant debris, and ensures the long-term stable operation of the drainage system and the growth environment of plant roots.
Smart Images
Figure CN121312434A_ABST
Abstract
Description
Technical Field
[0001] This invention patent relates to the technical field of green roofs, and more specifically, to the arrangement structure of green roofs. Background Technology
[0002] With the acceleration of urbanization, green roofs have been widely used as an ecological compensation measure for urban green space.
[0003] Since planting soil and plants are laid on the roof of a building, which increases the load on the roof, poor drainage can lead to problems such as water accumulation, root rot, structural damage and leakage. Therefore, how to achieve good drainage in green roofs has always been a key technical focus.
[0004] In existing technologies, traditional drainage systems rely solely on roof slope or drainage boards for drainage, which makes it difficult to quickly drain accumulated water during heavy rain. In particular, drainage boards have a single drainage path, slow water flow, and are easily obstructed by planting soil and plant roots, resulting in low drainage efficiency and increased risk of leakage.
[0005] Moreover, with overly simple filtration devices in the drainage system, it is unable to effectively intercept soil particles and plant debris, causing blockages in the drainage pipes and outlets, thus rendering the drainage system ineffective. Summary of the Invention
[0006] The purpose of this invention is to provide a green roof layout structure, which aims to solve the problem of poor drainage effect of green roofs in the prior art.
[0007] The present invention is implemented as follows: a green roof arrangement structure includes a structural slab, the top of which has a top surface, a waterproof layer is covered on the top surface, a water storage and drainage layer is covered on the waterproof layer, a planting soil layer is covered on the water storage and drainage layer, and plants are planted on the planting soil layer; the structural slab is provided with a drainage channel, which runs vertically through the structural slab and upwards through the waterproof layer and the water storage and drainage layer, forming a top opening;
[0008] A filter rack is sealed over the top opening, and the filter rack surrounds and forms a drainage cavity. The filter rack abuts against the water storage and drainage layer, and the bottom of the drainage cavity communicates with the top opening. A ring-shaped filter cavity is formed on the outer periphery of the filter rack, and the filter cavity communicates with the drainage cavity. The filter cavity is filled with filter material to form a filter layer, and the filter layer has multiple curved filter gaps. The planting soil layer abuts against the outer periphery of the filter cavity and communicates with the filter cavity.
[0009] Water in the planting soil layer seeps into the filtration chamber, is filtered by the filtration layer in the filtration chamber, seeps into the drainage chamber, and enters the drainage channel through the top opening.
[0010] Furthermore, a leveling layer is laid on the top surface, and the waterproof layer covers the leveling layer.
[0011] Furthermore, the waterproof layer includes a bottom waterproof layer and a top waterproof layer, the bottom waterproof layer covering the leveling layer, the top waterproof layer covering the bottom waterproof layer, and the water storage and drainage layer covering the top waterproof layer.
[0012] Furthermore, the thickness of the top waterproof layer is greater than the thickness of the bottom waterproof layer.
[0013] Furthermore, an adhesive layer is provided between the bottom waterproof layer and the top waterproof layer, and the bottom waterproof layer and the top waterproof layer are bonded together by the adhesive layer.
[0014] Furthermore, the adhesive layer is wrapped with a woven fabric layer, which is laid flat; the woven fabric layer is raised upward to form multiple pleats, which are arranged in a nested manner along the outer periphery of the drainage channel.
[0015] Furthermore, the filter material is crushed stone, which accumulates in the filter chamber to form the filter layer.
[0016] Furthermore, the filter frame includes an inner mesh cylinder that surrounds and forms the drainage cavity. A bottom filter screen is provided at the bottom of the drainage cavity. The bottom of the inner mesh cylinder is connected to the bottom filter screen, and the bottom filter screen covers the top opening of the drainage channel. An outer mesh cylinder surrounds the outer periphery of the inner mesh cylinder, and the outer mesh cylinder and the inner mesh cylinder are arranged at intervals to form the filter cavity.
[0017] The height of the filter layer is higher than the height of the planting soil layer. The top of the drainage cavity is covered with a top filter screen. The middle of the top filter screen is arched upward in a spherical shape. The outer periphery of the top filter screen has an annularly arranged outer groove, which is arranged around the circumference of the top filter screen.
[0018] Furthermore, the bottom filter screen has multiple bottom filter holes arranged in an array, with an intersection between adjacent bottom filter holes; multiple elastic columns protrude from the bottom filter screen, with the bottom of the elastic columns fixed at the intersection, the top of the elastic columns extending upwards, and adjacent elastic columns having different heights, with the multiple elastic columns arranged in alternating heights.
[0019] Furthermore, the filter chamber is provided with a ring-shaped absorbent cotton layer, which is attached to the inner wall of the outer mesh cylinder. The absorbent cotton layer is compressed by the filter material and is arranged in a multi-position compression state.
[0020] The filter layer has multiple elastic strips, each with multiple transverse through holes. The elastic strips are arranged in a curved pattern along the filter gaps and are encased in the filter material.
[0021] Compared with the prior art, the green roof arrangement structure provided by the present invention provides an efficient and direct channel for the drainage of roof water by setting drainage channels in the structural slab, penetrating the structural slab vertically and penetrating the waterproof layer and the water storage and drainage layer to form a top opening. This allows excess water on the green roof to quickly and smoothly enter the drainage channel from the top opening, effectively reducing the time and possibility of water lingering on the roof.
[0022] Furthermore, the drainage chamber formed by the filter rack provides a buffer space for drainage, and the filter rack abuts against the water storage and drainage layer, enhancing the stability of the entire drainage system.
[0023] In addition, the multiple curved filter gaps in the filter layer not only extend the filtration path of the water flow and improve the filtration effect, but also effectively prevent soil particles, plant residues and other impurities from entering the drainage chamber and drainage channel. This not only ensures the long-term stable operation of the drainage system, but also provides a good growth environment for plant roots. Attached Figure Description
[0024] Figure 1 This is a simplified cross-sectional schematic diagram of the green roof layout structure provided by the present invention;
[0025] Figure 2 This is a cross-sectional schematic diagram of the drainage channel provided by the present invention;
[0026] Figure 3 This is a schematic diagram of the structure of the water filter rack provided by the present invention;
[0027] In the diagram: Waterproof layer 100, top waterproof layer 101, bottom waterproof layer 102, adhesive layer 103, fabric layer 104, pleats 105, drainage channel 106.
[0028] Filter rack 200, outer mesh cylinder 201, absorbent cotton layer 202, filter chamber 203, inner mesh cylinder 204, bottom filter screen 205, elastic column 206, top filter screen 207, outer peripheral groove 208, drain chamber 209. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0030] The implementation of the present invention will be described in detail below with reference to specific embodiments.
[0031] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0032] Reference Figure 1-3 The image shows a preferred embodiment of the present invention.
[0033] The green roof layout structure includes a structural slab, the top of which has a top surface, a waterproof layer 100 covering the top surface, a water storage and drainage layer covering the waterproof layer 100, a planting soil layer covering the water storage and drainage layer, and plants growing on the planting soil layer; the structural slab is provided with a drainage channel 106, which runs vertically through the structural slab and upwards through the waterproof layer 100 and the water storage and drainage layer, forming a top opening.
[0034] A filter rack 200 is sealed over the top opening, and the filter rack 200 surrounds and forms a drainage cavity 209. The filter rack 200 abuts against the water storage and drainage layer, and the bottom of the drainage cavity 209 is connected to the top opening. A ring-shaped filter cavity 203 is formed on the outer periphery of the filter rack 200. The filter cavity 203 is connected to the drainage cavity 209. The filter cavity 203 is filled with filter material to form a filter layer. The filter layer has multiple curved filter gaps. The planting soil layer abuts against the outer periphery of the filter cavity 203 and is connected to the filter cavity 203.
[0035] Water in the planting soil layer seeps into the filter chamber 203, is filtered by the filter layer in the filter chamber 203, seeps into the drainage chamber 209, and enters the drainage channel 106 through the top opening.
[0036] The above-mentioned green roof layout structure provides an efficient and direct channel for the drainage of roof water by setting drainage channels 106 in the structural slab, which penetrate the structural slab vertically and the waterproof layer 100 and the water storage and drainage layer to form a top opening. This allows excess water on the green roof to quickly and smoothly enter the drainage channel 106 from the top opening, effectively reducing the time and possibility of water lingering on the roof.
[0037] Furthermore, the drainage chamber 209 formed by the filter rack 200 provides a buffer space for drainage, while the filter rack 200 abuts against the water storage and drainage layer, enhancing the stability of the entire drainage system.
[0038] In addition, the multiple curved filter gaps in the filter layer not only extend the filtration path of the water flow and improve the filtration effect, but also effectively prevent soil particles, plant residues and other impurities from entering the drainage chamber 209 and drainage channel 106. This not only ensures the long-term stable operation of the drainage system, but also provides a good growth environment for plant roots.
[0039] In this embodiment, a leveling layer is laid on the top surface, and a waterproof layer 100 is laid on top of the leveling layer; this ensures that the roof has good flatness, effectively prevents water accumulation caused by local unevenness of the roof, reduces water accumulation at the source, and improves the overall drainage efficiency.
[0040] In this embodiment, the waterproof layer 100 includes a bottom waterproof layer 102100 and a top waterproof layer 101100. The bottom waterproof layer 102100 covers the leveling layer, the top waterproof layer 101100 covers the bottom waterproof layer 102100, and the water storage and drainage layer covers the top waterproof layer 101100.
[0041] The multi-layer waterproof structure consisting of the bottom waterproof layer 102100 and the top waterproof layer 101100 not only significantly enhances the waterproof performance of the roof, but also provides a stable and reliable support platform for the drainage layer above, ensuring that the drainage layer can stably perform its function of collecting, storing and diverting rainwater, indirectly optimizing the drainage process and improving drainage efficiency.
[0042] In this embodiment, the thickness of the top waterproof layer 101100 is greater than the thickness of the bottom waterproof layer 102100; thus, the top waterproof layer 101100 can withstand greater external pressure and risks such as plant root penetration, providing better protection for the underlying water storage and drainage layer and drainage channel 106 structure, preventing drainage system failure due to damage to the waterproof layer 100, and ensuring the long-term stable operation of the drainage system.
[0043] In this embodiment, an adhesive layer 103 is provided between the bottom waterproof layer 102100 and the top waterproof layer 101100, and the bottom waterproof layer 102100 and the top waterproof layer 101100 are bonded together by the adhesive layer 103.
[0044] This enhances the integrity and waterproof performance between the upper and lower waterproof layers 100. Even if the top waterproof layer 101100 is accidentally punctured, the adhesive layer 103 can effectively prevent further water penetration and maintain normal waterproof function.
[0045] In this embodiment, the adhesive layer 103 is wrapped with a fabric layer 104, which is laid flat. The fabric layer 104 protrudes upward to form multiple pleats 105, which are arranged in a nested manner along the outer periphery of the drainage channel 106.
[0046] The design of the fabric layer 104 enhances both the toughness and waterproof performance of the waterproof layer 100. The pleats 105 effectively disperse external pressure, preventing the waterproof layer 100 from being punctured, thus ensuring the waterproof effect of the area around the drainage channel 106, guaranteeing the stable operation of the drainage system, and providing a reliable guarantee for the drainage effect of the green roof.
[0047] In this embodiment, the filter material is crushed stone, which accumulates in the filter chamber 203 to form a filter layer.
[0048] The filter layer formed by crushed stone has good permeability and filtration properties, which can effectively filter impurities such as soil particles, ensuring that rainwater can smoothly penetrate and pass through the filter chamber 203, and then enter the drainage system for discharge, thereby improving drainage efficiency and protecting the roof structure from water accumulation damage.
[0049] In this embodiment, the water filter rack 200 includes an inner mesh cylinder 204, which surrounds and forms a drainage cavity 209. A bottom water filter 205 is provided at the bottom of the drainage cavity 209. The bottom of the inner mesh cylinder 204 is connected to the bottom water filter 205, and the bottom water filter 205 covers the top opening of the drainage channel 106. An outer mesh cylinder 201 surrounds the outer periphery of the inner mesh cylinder 204. The outer mesh cylinder 201 and the inner mesh cylinder 204 are arranged at intervals to form a water filter cavity 203.
[0050] The height of the filter layer is higher than the height of the planting soil layer. The top of the drainage chamber 209 is covered with a top filter screen 207. The middle of the top filter screen 207 is arched upward in a spherical shape. The outer periphery of the top filter screen 207 is formed by annularly arranged outer grooves 208, which are arranged around the circumference of the top filter screen 207.
[0051] The arched top filter screen 207 and the arrangement of the outer peripheral grooves 208 effectively prevent debris from accumulating and clogging the top filter screen 207, ensuring that rainwater can smoothly pass through the filter layer to the drainage chamber 209 and be discharged through the drainage channel 106. At the same time, the height advantage of the filter layer also allows rainwater to flow more smoothly under the action of gravity, thereby increasing the drainage speed and improving the drainage condition of the green roof.
[0052] In this embodiment, the bottom filter screen 205 has multiple bottom filter holes arranged in an array, with an intersection between adjacent bottom filter holes; multiple elastic columns 206 protrude from the bottom filter screen 205, with the bottom of the elastic columns 206 fixed at the intersection, the top of the elastic columns 206 extending upwards, and adjacent elastic columns 206 having different heights, with the multiple elastic columns 206 arranged in an alternating pattern of high and low.
[0053] By setting bottom filter holes and elastic columns 206, not only can rainwater be smoothly passed through the filter holes into the drainage channel 106, but the alternating arrangement of the elastic columns 206 can also buffer the impact of rainwater, prevent the filter holes from being blocked due to excessive water flow, ensure the continuity and stability of drainage, and thus improve the drainage effect of the green roof.
[0054] In this embodiment, the water filtration chamber 203 is provided with an annularly arranged absorbent cotton layer 202. The absorbent cotton layer 202 is attached to the inner wall of the outer mesh cylinder 201. The absorbent cotton layer 202 is squeezed by the water filtration material and is arranged in a multi-position compression state.
[0055] The filter layer has multiple elastic strips, each with multiple transverse through holes. The elastic strips are arranged in a curved pattern along the filter gaps and are encased in the filter material.
[0056] On the one hand, the absorbent cotton layer 202 can effectively absorb excess water in the filter chamber 203, prevent excessive water accumulation, and keep the filter layer dry and breathable; on the other hand, the elastic strip provides additional elastic support for the filter layer, so that the filter gap can remain stable when subjected to external pressure, ensuring the smooth progress of the rainwater filtration process, and working together to improve the drainage performance of the green roof.
[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A green roof layout structure, characterized in that, The structure includes a structural slab with a top surface covered by a waterproof layer, a drainage layer covered by a water-storage layer, a planting soil layer covered by a water-storage layer, and plants planted on the planting soil layer. The structural slab is provided with a drainage channel that runs vertically through the structural slab and upwards through the waterproof layer and the water-storage layer, forming a top opening. A filter rack is sealed over the top opening, and the filter rack surrounds and forms a drainage cavity. The filter rack abuts against the water storage and drainage layer, and the bottom of the drainage cavity communicates with the top opening. A ring-shaped filter cavity is formed on the outer periphery of the filter rack, and the filter cavity communicates with the drainage cavity. The filter cavity is filled with filter material to form a filter layer, and the filter layer has multiple curved filter gaps. The planting soil layer abuts against the outer periphery of the filter cavity and communicates with the filter cavity. Water in the planting soil layer seeps into the filtration chamber, is filtered by the filtration layer in the filtration chamber, seeps into the drainage chamber, and enters the drainage channel through the top opening.
2. The green roof layout structure as described in claim 1, characterized in that, A leveling layer is laid on the top surface, and the waterproof layer covers the leveling layer.
3. The green roof layout structure as described in claim 1 or 2, characterized in that, The waterproof layer includes a bottom waterproof layer and a top waterproof layer. The bottom waterproof layer covers the leveling layer, the top waterproof layer covers the bottom waterproof layer, and the water storage and drainage layer covers the top waterproof layer.
4. The green roof layout structure as described in claim 3, characterized in that, The thickness of the top waterproof layer is greater than the thickness of the bottom waterproof layer.
5. The green roof layout structure as described in claim 3, characterized in that, An adhesive layer is provided between the bottom waterproof layer and the top waterproof layer, and the bottom waterproof layer and the top waterproof layer are bonded together by the adhesive layer.
6. The green roof layout structure as described in claim 5, characterized in that, The adhesive layer is wrapped with a woven fabric layer, which is laid flat. The woven fabric layer is raised upward to form multiple pleats, which are arranged in a nested manner along the outer periphery of the drainage channel.
7. The green roof layout structure as described in claim 1 or 2, characterized in that, The filter material is crushed stone, which accumulates in the filter chamber to form the filter layer.
8. The green roof layout structure as described in claim 1 or 2, characterized in that, The water filter rack includes an inner mesh cylinder that surrounds and forms the drainage cavity. A bottom filter screen is provided at the bottom of the drainage cavity. The bottom of the inner mesh cylinder is connected to the bottom filter screen, and the bottom filter screen covers the top opening of the drainage channel. An outer mesh cylinder surrounds the outer periphery of the inner mesh cylinder, and the outer mesh cylinder and the inner mesh cylinder are arranged at intervals to form the water filter cavity. The height of the filter layer is higher than the height of the planting soil layer. The top of the drainage cavity is covered with a top filter screen. The middle of the top filter screen is arched upward in a spherical shape. The outer periphery of the top filter screen has an annularly arranged outer groove, which is arranged around the circumference of the top filter screen.
9. The green roof layout structure as described in claim 8, characterized in that, The bottom filter screen has multiple bottom filter holes arranged in an array, with an intersection between adjacent bottom filter holes; multiple elastic columns protrude from the bottom filter screen, with the bottom of the elastic columns fixed at the intersection, the top of the elastic columns extending upwards, and adjacent elastic columns having different heights, with the multiple elastic columns arranged in alternating heights.
10. The green roof layout structure as described in claim 1 or 2, characterized in that, The filter chamber is provided with a ring-shaped absorbent cotton layer, which is attached to the inner wall of the outer mesh cylinder. The absorbent cotton layer is compressed by the filter material and is arranged in a multi-position compression state. The filter layer has multiple elastic strips, each with multiple transverse through holes. The elastic strips are arranged in a curved pattern along the filter gaps and are encased in the filter material.