Overhead playground roof structure and slope finding method thereof

Abstract

The invention relates to an overhead playground roof structure and a slope finding method thereof. The overhead playground roof structure comprises a playground roof which comprises a roof layer and a playground layer arranged above the roof layer; the blind ditch is arranged on the side edge of the playground roof; the gradient of the roof layer is 2-3%, and the gradient of the moving layer is 0.3-0.5%; the slope finding method comprises the steps that a roof layer is divided into a plurality of small slopes connected end to end, roof slope finding is conducted in the short side direction of the small slopes, the gradient is not less than 2%, ditch slope finding is conducted in the long side direction of the small slopes, and the gradient is not less than 1%. Compared with the prior art, the roof layer is divided into a plurality of small slope roofs, not less than 2% of the slope is made by using short edges to make the roof, and not less than 1% of the slope is made by using long edges to make ditches. And the slope finding direction of the roof drainage ditch (slope) is kept consistent with the slope finding direction (0.3-0.5%) of the moving layer, so that a part of slope finding height can be reduced. Therefore, high fall caused by large-span one-way slope finding is avoided.

Description

Technical Field

[0001] The present invention relates to the field of construction engineering, and particularly to an overhead sports field roof structure and a slope finding method thereof. Background Art

[0002] Schools need sports fields suitable for them to provide places for students' sports activities. With the intensification of urban land use, newly built schools either dig up space upwards or downwards in order to make more efficient use of land. The need to raise outdoor sports fields and utilize the space below has emerged. However, this will bring the following two major problems:

[0003] (1) The raised sports field is both a playground and a roof; it is neither a through-length planted roof nor an ordinary ground sports playground. Therefore, a composite waterproofing and drainage cushion method needs to be created.

[0004] (2) Control the thickness of the surface layer on the raised top cover, and control the roof load to control the influence of the structural beam on the space below, so as to achieve the desired architectural effect. Summary of the Invention

[0005] The purpose of the present invention is to provide an overhead sports field roof structure and a slope finding method thereof in order to overcome at least one of the defects existing in the above-mentioned prior art.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] One of the purposes of the present invention lies in an overhead sports field roof structure, including:

[0008] A sports field roof, including a roof layer and a sports layer arranged above the roof layer;

[0009] A hidden drain arranged on the side of the sports field roof;

[0010] The slope of the roof layer is 2-3%, meeting the technical requirements of the roof, and the slope of the sports layer is 0.3-0.5%, meeting the technical requirements of the sports field.

[0011] Furthermore, the roof layer is sloped by architectural slope finding, with a slope of not less than 2%; the roof layer is sloped by structural slope finding, with a slope of not less than 3%. Preferentially choose architectural slope finding.

[0012] Furthermore, the roof layer is formed by connecting multiple folding ridges, and the convex side of the folding ridge faces the sports layer.

[0013] Furthermore, the connection between two adjacent folding ridges is a water collecting ditch.

[0014] Furthermore, the slopes on both sides of the folding ridge are not less than 1%.

[0015] Further, a drainage board is provided between the roof layer and the sports layer.

[0016] Further, the sports layer includes a lawn layer and / or a plastic layer.

[0017] Further, the lawn layer is a natural lawn layer or an artificial lawn layer.

[0018] A second object of the present invention is a slope finding method for the overhead sports field roof structure as described above, which is characterized by including: dividing the roof layer into several small slopes connected end to end, making a roof slope along the short side of the small slope with a slope of not less than 2%, and making a gutter slope along the long side of the small slope with a slope of not less than 1%.

[0019] The sports field includes an outdoor track and field track, an outdoor football field and an outdoor activity field. Since the spans of the football field and the track and field field are relatively large, simply and roughly dividing the ridge line will result in a large drop in the roof layer. The sports layer above the low-lying drainage area is made very thick, increasing the load on the overhead sports field roof, thus affecting the height of the structural beam section below and losing the originally elevated height and the space utilization efficiency. The present invention divides the roof layer into several small pitched roofs, makes a roof slope along the short side of not less than 2%, and makes a gutter slope along the long side of not less than 1%. Make the slope direction of the roof drainage gutter (slope) consistent with the slope direction of the sports layer (0.3 - 0.5%), so that a part of the slope height can also be eliminated. Thus, the high drop caused by large-span one-way slope finding can be avoided. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overhead sports field roof structure of the present invention;

[0021] Figure 2 It is the sports field with a 400-meter track in Embodiment 1;

[0022] Figure 3 It is the slope finding structure obtained by the prior art

[0023] Figure 4 It is the slope finding structure obtained by the slope finding method in Embodiment 1;

[0024] Figure 5 It is the thickness calculation diagram of the sports layer and the roof layer in different situations in Embodiment 2;

[0025] As shown in the figure: 1 - hidden gutter; 2 - roof layer; 3 - sports layer; 31 - natural lawn layer; 32 - soil layer. Detailed Embodiments

[0026] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. These embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present invention is not limited to the following embodiments.

[0027] Embodiment 1

[0028] This embodiment provides an overhead sports field roof structure. The specific structure is shown in Figure 1 , including: a sports field roof, including a roof layer 2 and a sports layer 3 arranged above the roof layer 2; a hidden drain 1 arranged on the side of the sports field roof;

[0029] Wherein, the slope of the roof layer 2 is 2-3%, and the slope of the sports layer 3 is 0.3-0.5%.

[0030] In this embodiment, the roof layer 2 is structurally sloped with a slope of not less than 3%, and the roof layer 2 is architecturally sloped with a slope of not less than 2%. Therefore, the preferred slope-making method is architectural slope-making.

[0031] In this embodiment, a drainage board is arranged between the roof layer 2 and the sports layer 3. The roof layer 2 is formed by connecting a plurality of folding ridges. The convex side of the folding ridge faces the sports layer 3. The connection between two adjacent folding ridges is a gutter. The slopes on both sides of the folding ridge are not less than 1%.

[0032] In this embodiment, the sports layer 3 includes a lawn layer and / or a plastic layer, and the lawn layer is a natural lawn layer or an artificial lawn layer.

[0033] This embodiment also provides a slope-making method for the overhead sports field roof structure as described above, including: dividing the roof layer 2 into several small slopes connected end to end, making roof slope along the short side of the small slope with a slope of not less than 2%, and making gutter slope along the long side of the small slope with a slope of not less than 1%.

[0034] Specifically, the sports field includes an outdoor track and field track, an outdoor football field, and an outdoor activity field. Because the spans of the football field and the track and field field are relatively large, simply and roughly dividing the ridge line of the slope will result in a large drop in the roof layer. The sports layer above the low-lying drainage area is made very thick, increasing the load of the overhead sports field roof, thereby affecting the height of the structural beam section below and losing the originally elevated height and the space utilization efficiency.

[0035] In this embodiment, the roof layer 2 is divided into several small pitched roofs. The short side is used to make the roof slope not less than 2%, and the long side is used to make the gutter slope not less than 1%. Make the slope direction of the roof drainage gutter consistent with the slope direction of the sports layer 3 with a slope of 0.3-0.5%. In this way, a part of the slope height can also be eliminated. Thus, the high drop caused by one-way slope with a large span is avoided.

[0036] Specific examples are as follows:

[0037] A sports ground with a 400-meter track, see Figure 2 , the short side of the inner circle of the track is used as the x-axis with a length of 71 meters. The ridge divides the short side into two parts and slopes 2% on both sides in the x-axis direction, with a height difference of 710 mm, see Figure 3 . According to this embodiment, taking the x-axis direction as the roof drainage gutter (slope) with a slope of 1%, the height difference is 355 mm, and then several double-slope roofs are cut out in the y-axis direction. For example, in the y-axis direction, a single small double-slope single-slope roof with a span of 6 meters has a slope of 2%, and the height difference is 120 mm. The superposition of the two is 475 mm, see Figure 4 . Far less than the height difference of the original single-direction slope.

[0038] Embodiment 2

[0039] According to the qualitative and design principles, the sports roof is divided into a sports layer 3 and a roof layer 2, an upper and a lower two-layer structure system. The upper layer is the sports layer 3, and the football field uses natural turf as a permeable sports ground, with a site slope of 0.3 - 0.5%. The cross slope of the plastic track is 1%. The lower layer is the roof layer, with a roof slope of 2% (architectural slope) or 3% (structural slope), and the architectural slope is better. The slope of the water collection line (or water collection gutter) is 1%.

[0040] The entire rainwater drainage and storage system divides the rainwater into three parts. Part of the rainwater forms surface water and directly flows into the blind ditch. Part of the rainwater seeps downward into the soil of the sports layer for storage. The last part is the water that exceeds the soil water storage capacity and is introduced into the water collection line (gutter) by the drainage board and flows into the blind ditch 1. The water in the blind ditch 1 finally drains into the pipe network through the water bucket + riser pipe.

[0041] According to similar relevant specifications, such as "Engineering Practice" 23J909, determine the construction methods and thicknesses of the sports layer and the roof layer respectively. If the sports layer is natural turf, the construction layer methods are as follows:

[0042] 1. The natural turf is 30 - 50 mm thick;

[0043] 2. The planting soil part is 50 mm thick peat soil and 200 - 250 mm thick sandy soil (if the lawn of the sports ground is included in the roof greening area, it should meet the requirement of 300 mm thick soil covering);

[0044] 3. 30 mm thick coarse sand is leveled (for hydrophobic function)

[0045] The total thickness of the above structures: 330 mm thick (excluding the slope thickness).

[0046] The construction layer methods of the roof layer are as follows (inverted type):

[0047] 4. Geotextile filter layer;

[0048] 5. 25mm thick concave-convex drainage (water storage) board;

[0049] 6. 50mm thick fine aggregate concrete protective layer (C25);

[0050] 7. 0.4mm thick PVC film isolation layer;

[0051] 8. Waterproof layer (calculated as 10mm thick);

[0052] 9. 20mm thick cement mortar leveling;

[0053] 10. Lightweight concrete combined with XPS for slope finding (the thinnest part is included in the upper cement mortar leveling layer with a thickness of 0);

[0054] 11. 80mm thick extruded polystyrene foam insulation board

[0055] According to the above roof slope finding method and structural thickness, the structural thicknesses of overhead sports roofs of different sizes are shown in the following table:

[0056]

[0057] The thickness calculations of the sports layer and the roof layer in different situations are as Figure 5 shown:

[0058] The technical measures for controlling the structural thickness and load of the overhead sports roof are as follows:

[0059] (1) The material selection of the sports surface layer, the structural thickness and load of natural turf are greater than those of artificial turf;

[0060] (2) The sports surface layer and the roof surface layer have the same slope finding to eliminate part of the structural thickness;

[0061] (3) Increase the number of folding ridges on the roof layer to avoid one-way long-span slope finding, which can reduce the structural thickness caused by slope finding;

[0062] (4) Select a lighter material as the slope finding filler, such as extruded polystyrene foam (XPS) placed in a stacked and staggered manner combined with lightweight concrete for slope finding.

[0063] The above are only the preferred embodiments of the present invention, and are not limitations on the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. An overhead sports field roof structure, characterized in that: include: A sports field roof comprises a roof layer (2) and a sports layer (3) arranged above the roof layer (2); A hidden ditch (1) is arranged on the side of the sports field roof; The slope of the roof layer (2) is 2-3%, and the slope of the sports layer (3) is 0.3-0.5%.

2. The overhead sports field roof structure according to claim 1, characterized in that: The roof layer (2) is sloped by building, and the slope is not less than 2%.

3. The overhead sports field roof structure according to claim 1, characterized in that: The roof layer (2) is sloped by means of a structure, and the slope is not less than 3%.

4. The overhead sports field roof structure according to claim 1, characterized in that: The roofing layer (2) is formed by connecting a plurality of folded ridges, and the convex side of the folded ridges faces the moving layer (3).

5. The overhead sports field roof structure according to claim 4, characterized in that: The connection between two adjacent ridges is a drainage ditch.

6. The overhead sports field roof structure according to claim 4, characterized in that: The slopes on both sides of the folded ridge are not less than 1%.

7. The overhead sports field roof structure according to claim 1, characterized in that: A drainage board is provided between the roof layer (2) and the sports layer (3).

8. The overhead sports field roof structure according to claim 1, characterized in that: The sports layer (3) comprises a lawn layer and / or a plastic layer.

9. The overhead sports field roof structure according to claim 8, characterized in that: The lawn layer is a natural lawn layer or an artificial lawn layer.

10. A slope finding method for an overhead sports field roof structure according to any one of claims 1 to 9, characterized in that: include: The roof layer (2) is divided into a number of small slopes connected end to end, and the roof slope is made along the short side of the small slope, with a slope of not less than 2%, and the ditch slope is made along the long side of the small slope, with a slope of not less than 1%.

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