Planting roof structure for high trees and shrubs mixed planting and construction method thereof

Abstract

This invention discloses a planting roof structure and construction method for mixed planting of tall trees and shrubs. By partially lowering the concrete roof panel supporting the truss to form planting trenches for tall trees, the planting area for tall trees is separated from the planting area for short shrubs. This reduces the overall soil cover thickness of the planting roof, lowers the overall roof load, and reduces steel consumption. This invention solves the problem of high steel consumption in existing steel truss roof structures for mixed planting of trees and shrubs.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, specifically to a planted roof structure for mixed planting of tall trees and shrubs and its construction method. Background Technology

[0002] When planting greenery (such as trees and shrubs) on roof structures where large-span steel trusses serve as the primary structural load-bearing system, the soil cover thickness is generally determined by the required planting soil thickness for trees, typically ranging from 1.5 to 2 meters. However, areas outside of tree planting are generally used for shrub planting, where a soil cover thickness of only 0.3 to 0.5 meters is sufficient. Thus, the planting soil thickness in shrub planting areas is also 1.5 to 2 meters, depending on the needs of tree planting. It is well known that for large-span steel structure systems, the magnitude of the load has an extremely sensitive impact on the amount of steel used, resulting in significant steel waste.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, a planting roof structure for mixed planting of tall trees and shrubs and its construction method are provided to solve the problem of large steel consumption in existing steel truss roof structures for mixed planting of trees and shrubs.

[0005] To achieve the above objectives, a green roof structure for mixed planting of tall trees and shrubs is provided, comprising:

[0006] The supporting truss includes multiple upper chords and multiple upper connecting rods arranged in the same direction. The upper connecting rods are connected to the multiple upper chords. The multiple upper connecting rods are spaced apart along the length direction of the upper chords. A supporting frame is connected between two adjacent upper chords. The supporting frame and the upper chords and / or the upper connecting rods enclose a frame opening.

[0007] A concrete roof panel is cast on multiple upper chords and multiple upper connecting rods. The concrete roof panel has a channel aligned with the frame opening. The lower opening of the channel extends downward to form a planting trough, which is inserted into the frame opening.

[0008] The first composite waterproof layer is laid on the concrete roof slab;

[0009] The insulation layer is laid on top of the first composite waterproof layer;

[0010] The second composite waterproof layer is laid on the insulation layer;

[0011] A concrete protective layer is poured onto the second composite waterproof layer;

[0012] Drainage board, laid on the concrete protective layer;

[0013] A filter layer is laid on the drainage board;

[0014] Planting soil is spread on the filter root barrier layer, and the thickness of the planting soil in the planting trench is greater than the thickness of the planting soil on the concrete roof panel.

[0015] Furthermore, the first composite waterproof layer includes:

[0016] A non-curing waterproof coating layer is applied to the concrete roof panel;

[0017] Asphalt waterproof membrane is laid on the non-curing waterproof coating layer.

[0018] Furthermore, the second composite waterproof layer includes:

[0019] Elastomer-modified bitumen waterproof membrane is laid on the insulation layer;

[0020] Modified bitumen root-penetration resistant waterproof membrane is laid on top of the elastomeric modified bitumen waterproof membrane.

[0021] Furthermore, the insulation layer is an extruded polystyrene board layer.

[0022] Furthermore, a steel mesh is embedded within the concrete protective layer.

[0023] Furthermore, the filter layer is a geotextile layer.

[0024] This invention provides a construction method for a planted roof structure that combines tall trees and shrubs, comprising the following steps:

[0025] Install supporting trusses on the building structure;

[0026] A concrete roof panel is formed by casting on multiple upper chords and multiple upper connecting rods of the supporting truss. The concrete roof panel has a channel aligned with the frame opening of the supporting truss. The lower opening of the channel extends downward to form a planting trough, which is inserted into the frame opening.

[0027] A first composite waterproof layer is laid on the concrete roof slab;

[0028] An insulation layer is laid on the first composite waterproof layer;

[0029] A second composite waterproof layer is laid on the insulation layer;

[0030] A concrete protective layer is poured over the second composite waterproof layer;

[0031] A drainage board is laid on the concrete protective layer;

[0032] A filter root barrier layer is laid on the drainage board;

[0033] Planting soil is spread on the filter root layer such that the thickness of the planting soil in the planting trench is greater than the thickness of the planting soil on the concrete roof slab.

[0034] The beneficial effects of this invention are that the planting roof structure for mixed planting of tall trees and shrubs greatly reduces the thickness of the soil covering on the roof for mixed planting of trees and shrubs. It is particularly suitable for large-span steel structure planting roofs, especially large-span steel truss roofs. Because the truss is high, the area under the tree planting pit does not affect the installation of electromechanical pipelines. Moreover, the process is simple, the stress is reasonable, and the load reduction and cost reduction effect is obvious. Attached Figure Description

[0035] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0036] Figure 1 This is a schematic diagram of a planting roof structure for mixed planting of tall trees and shrubs according to an embodiment of the present invention.

[0037] Figure 2 for Figure 1 The sectional view at point AA.

[0038] Figure 3 This is a schematic diagram of the structure of the planting trough in an embodiment of the present invention. Detailed Implementation

[0039] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] Reference Figures 1 to 3 As shown, the present invention provides a planting roof structure for mixed planting of tall trees and shrubs, comprising: a supporting truss 1, a concrete roof panel 2, a first composite waterproof layer, a thermal insulation layer 4, a second composite waterproof layer, a concrete protective layer, a drainage board, a filter root barrier layer, and planting soil 5.

[0042] The supporting truss 1 is a space truss structure. The supporting truss 1 includes multiple upper chords 11, multiple upper connecting rods 12, and multiple lower chords arranged in the same direction. The lower chords are arranged in the same direction as the upper chords. Web members connect the lower chords and upper chords. The upper connecting rods 12 are connected to the multiple upper chords 11. The multiple upper connecting rods 12 are spaced apart along the length of the upper chords 11. A supporting frame strip 13 connects adjacent upper chords 11. The supporting frame strip 13, together with the upper chords 11 and / or upper connecting rods 12, forms a frame opening.

[0043] The concrete roof panel 2 is cast onto multiple upper chords 11 and multiple upper connecting rods 12. The concrete roof panel 2 has ducts. The ducts of the concrete roof panel 2 are aligned with the frame openings of the supporting trusses. The lower opening of the duct in the concrete roof panel 2 extends downwards to form planting trenches 21. The planting trenches 21 are inserted into the frame openings. The planting trenches 21 are integrally cast with the concrete roof panel.

[0044] In this embodiment, the planting troughs on the concrete roof panel serve as the tree planting area on the roof. The concrete roof panel in the tree planting area is laid down, and there are various ways to do so. A simpler method is to hang steel columns on the upper chord, and connect the lower end of the steel columns with steel beams to serve as the load-bearing support points for the planting troughs and as structural wall panels.

[0045] The planting trough is equipped with a drainage pipe 22. The drainage pipe 22 is installed with a side drainage system about 100mm away from the bottom of the planting trough to prevent water from accumulating in the planting trough for a long time, which would affect the survival of the trees.

[0046] The first composite waterproof layer is laid on the concrete roof slab 2.

[0047] In a preferred embodiment, the first composite waterproof layer comprises a non-curing waterproof coating layer and an asphalt waterproof membrane. The non-curing waterproof coating layer is applied to the concrete roof slab 2. The asphalt waterproof membrane is laid over the non-curing waterproof coating layer.

[0048] Insulation layer 4 is laid on top of the first composite waterproof layer. The insulation layer is made of extruded polystyrene board.

[0049] The second composite waterproof layer is laid on the insulation layer 4.

[0050] In a preferred embodiment, the second composite waterproof layer comprises an elastomeric modified bitumen waterproof membrane and a modified bitumen root-penetration resistant waterproof membrane. The elastomeric modified bitumen waterproof membrane is laid on top of the insulation layer 4. The modified bitumen root-penetration resistant waterproof membrane is laid on top of the elastomeric modified bitumen waterproof membrane.

[0051] The concrete protective layer is poured on top of the second composite waterproof layer.

[0052] In this embodiment, a steel mesh is embedded in the concrete protective layer.

[0053] The drainage board is laid on the concrete protective layer. The filter layer is laid on the drainage board.

[0054] In this embodiment, the filter root barrier layer is a geotextile layer.

[0055] Planting soil 5 is spread on the filter root barrier layer. The thickness of planting soil 5 in the planting trench 21 is greater than the thickness of planting soil 5 on the concrete roof slab 2.

[0056] This invention provides a construction method for a planted roof structure that combines tall trees and shrubs, comprising the following steps:

[0057] S1: Install support truss 1 on the building structure.

[0058] S2: A concrete roof panel 2 is formed by pouring concrete onto the multiple upper chords 11 and multiple upper connecting rods 12 of the supporting truss 1. The concrete roof panel 2 has a channel aligned with the frame opening of the supporting truss 1. The lower opening of the channel extends downward to form a planting trough 21, which is inserted into the frame opening.

[0059] S3: Lay the first composite waterproof layer on the concrete roof slab 2.

[0060] S4: Lay the insulation layer 4 on the first composite waterproof layer.

[0061] S5: Lay the second composite waterproof layer on the insulation layer 4.

[0062] S6: Pour a concrete protective layer over the second composite waterproof layer.

[0063] S7: Lay drainage boards on the concrete protective layer.

[0064] S8: Lay a filter root barrier layer on the drainage board.

[0065] S9: Spread planting soil 5 on the filter root layer so that the thickness of the planting soil 5 in the planting trench 21 is greater than the thickness of the planting soil 5 on the concrete roof panel 2.

[0066] The planting roof structure of the present invention for mixed planting of tall trees and shrubs forms planting trenches by partially lowering the concrete roof panel supporting the truss to plant tall trees, thereby separating the planting area of ​​tall trees from the planting area of ​​short shrubs, thus reducing the overall soil cover thickness of the planting roof, reducing the overall roof load, and reducing steel consumption.

[0067] This invention relates to a planting trough structure for mixed planting of tall trees and shrubs, which incorporates drainage pipes and drainage measures to prevent water accumulation in the planting troughs. A filter root barrier layer is added inside the planting trough as a reverse filtration layer to prevent soil erosion.

[0068] The planting roof structure of the present invention for mixed planting of tall trees and shrubs greatly reduces the thickness of soil covering the roof for mixed planting of trees and shrubs. It is particularly suitable for large-span steel structure planting roofs, especially large-span steel truss roofs. Because the truss is high, the area under the tree planting pit does not affect the installation of electromechanical pipelines. Moreover, the process is simple, the stress is reasonable, and the load reduction and cost reduction effect is obvious.

[0069] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A planted roof structure for mixed planting of tall trees and shrubs, characterized in that, include: The supporting truss includes multiple upper chords and multiple upper connecting rods arranged in the same direction. The upper connecting rods are connected to the multiple upper chords. The multiple upper connecting rods are spaced apart along the length direction of the upper chords. A supporting frame is connected between two adjacent upper chords. The supporting frame and the upper chords and / or the upper connecting rods enclose a frame opening. A concrete roof panel is cast on multiple upper chords and multiple upper connecting rods. The concrete roof panel has a channel aligned with the frame opening. The lower opening of the channel extends downward to form a planting trough, which is inserted into the frame opening. The first composite waterproof layer is laid on the concrete roof slab; The insulation layer is laid on top of the first composite waterproof layer; The second composite waterproof layer is laid on the insulation layer; A concrete protective layer is poured onto the second composite waterproof layer; Drainage board, laid on the concrete protective layer; A filter layer is laid on the drainage board; Planting soil is spread on the filter root barrier layer, and the thickness of the planting soil in the planting trench is greater than the thickness of the planting soil on the concrete roof panel.

2. The planting roof structure for mixed planting of tall trees and shrubs according to claim 1, characterized in that, The first composite waterproof layer includes: A non-curing waterproof coating layer is applied to the concrete roof panel; Asphalt waterproof membrane is laid on the non-curing waterproof coating layer.

3. The planting roof structure for mixed planting of tall trees and shrubs according to claim 1, characterized in that, The second composite waterproof layer includes: Elastomer-modified bitumen waterproof membrane is laid on the insulation layer; Modified bitumen root-penetration resistant waterproof membrane is laid on top of the elastomeric modified bitumen waterproof membrane.

4. The planting roof structure for mixed planting of tall trees and shrubs according to claim 1, characterized in that, The insulation layer is an extruded polystyrene board layer.

5. The planting roof structure for mixed planting of tall trees and shrubs according to claim 1, characterized in that, The concrete protective layer is embedded with steel mesh.

6. The planting roof structure for mixed planting of tall trees and shrubs according to claim 1, characterized in that, The filter layer is a geotextile layer.

7. A construction method for a planted roof structure for mixed planting of tall trees and shrubs as described in any one of claims 1 to 6, characterized in that, Includes the following steps: Install supporting trusses on the building structure; A concrete roof panel is formed by casting on multiple upper chords and multiple upper connecting rods of the supporting truss. The concrete roof panel has a channel aligned with the frame opening of the supporting truss. The lower opening of the channel extends downward to form a planting trough, which is inserted into the frame opening. A first composite waterproof layer is laid on the concrete roof slab; An insulation layer is laid on the first composite waterproof layer; A second composite waterproof layer is laid on the insulation layer; A concrete protective layer is poured over the second composite waterproof layer; A drainage board is laid on the concrete protective layer; A filter root barrier layer is laid on the drainage board; Planting soil is spread on the filter root layer such that the thickness of the planting soil in the planting trench is greater than the thickness of the planting soil on the concrete roof slab.

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