JP2004176286A - Base material used for roof greening and roof greening method making use thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a base material for roof greening suitable for the roof greening of a table-flap roof and capable of securing heat insulation performance and draining performance at the same time. <P>SOLUTION: The base material is placed on an undulated table-flap 11 alternately forming a protrusion 11b and a recess 11a, and has two kinds of base materials, that is, a base material A fitted in the recess 11a of the table-flap 11 and having taper faces 12, 12 which can get into face contact with both side faces 11c, 11c of the recess 11a and a base material B put on the protrusion 11b of the table-flip 11 and arranged between the base materials A. By the combination of the base material A fitted to the recessions 11a and the base material B put on the protrusion 11b, upper faces of the base material A and the base material B are substantially formed to be planar. a draining space is formed between the under face 14 of the base material A fitted in the recess 11a and the bottom face of the recess 11a. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a base material when rooftop greening is performed on a folded-plate roof surface used for a residential building, a commercial building, and the like, and a rooftop greening method using the base material.
[0002]
[Prior art]
Although rooftop greening is spreading rapidly in recent years, many construction methods are based on flat roofs, and few construction methods are applied to folded-plate roofs that are frequently used in commercial buildings, warehouse buildings, and prefabricated methods. The reason that technological development does not proceed is that, due to the characteristics of plants, it is necessary to lay the drainage layer, soil, and plants after smoothing the roof surface bent in a wave form, and before the introduction of greening technology, that is, the roof This is because a great deal of cost and labor is required for the step of finishing the surface smoothly.
[0003]
For example, the following construction method is known as a construction method for rooftop greening on a folded plate roof surface.
[0004]
(1) Flat plate construction type. As shown in FIG. 5, a sheet-like building material 2 having water resistance and bending strength such as plywood, caical board, or FRP is laid on a folded plate roof surface 1, and a greening system 3 is constructed thereon. The greening system 3 has features in soil, drainage performance, water retention performance, and the like.
[0005]
(2) Tray type. As shown in FIG. 6, trays 4 incorporating a greening system of about 500 mm × 500 mm are laid on the folded-plate roof surface 1. The tray-type tree planting system has an advantage that maintenance is easy because only the corresponding tray 4 needs to be replaced when water leaks or plants die.
[0006]
(3) Groove filling type. As shown in FIG. 7, the inside of the groove of the folded plate 1 is filled with a holding material 5 made of styrene foam, a water-permeable member 6 is spread on the holding material 5, and soil 7 is sprayed on the water-permeable member 6. By filling the inside of the groove of the folded plate 1 with the holding material 5 made of styrene foam, the weight can be reduced and the heat insulating effect can be obtained (for example, see Patent Document 1).
[0007]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2000-13199
[Problems to be solved by the invention]
The rooftop greening system used for such folded-plate roofs and the base material of the rooftop greening system have a water retention performance for storing water for growing plants, and a drainage performance for preventing water from accumulating and being rooted. Required. Also, it is known that a root (soil) temperature change greatly affects the growth of plants. For example, in order to prevent frost damage in which roots freeze in winter, heat insulation performance is also required. Moreover, since it is laid on a folded plate roof that does not allow for a load, it is also required to be lightweight.
[0009]
However, in the rooftop greening method of (1) flat construction type and (2) tray type, a gap is formed between the lower part of the greening surface and the groove of the folded plate roof. In a normal natural environment, these voids are filled with soil, and changes in temperature and humidity are very small.However, in the rooftop greening method that presupposes that the greening system on the upper part is constructed while maintaining the space. However, the temperature and humidity of the soil change greatly, and it is not a method that takes into account the growth of plants.
[0010]
(3) In the roof filling greening method of the groove filling type, since the holding material functions as a heat insulating material, the heat insulating performance can be secured in the groove portion of the folded plate 1 (the portion where the holding material 5 is present). However, there is a problem that sufficient heat insulating performance cannot be ensured at the protruding portion of the folded plate 1 (portion where the holding member 5 is not provided). Further, since the groove of the folded plate 1 is filled with the holding material 5, there is also a problem that the water accumulated on the folded plate cannot be drained.
[0011]
Therefore, an object of the present invention is to provide a base material suitable for rooftop greening of a folded-plate roof, and a rooftop greening method using the base material, which can simultaneously secure heat insulation performance and drainage performance.
[0012]
[Means for Solving the Problems]
In order to solve the above problem, the invention of claim 1 is a base material used for rooftop greening, which is mounted on a wavy folded plate in which protrusions and grooves are alternately formed, wherein the base material is Has a tapered surface that can be in surface contact with both side surfaces of the groove when fitted in the groove, and between the lower surface of the base material fitted in the groove and the groove of the folded plate, for drainage. It is characterized in that a space is formed.
[0013]
According to the present invention, by fitting the base material into the groove of the folded plate, a high level of heat insulating performance can be easily and cheaply secured. The load due to greening is transmitted to the folded plate (building) from the tapered surface of the base material, and a space for drainage is formed between the lower surface of the base material and the groove of the folded plate. Therefore, this space can be used as a drainage layer for draining water stored on the upper surface of the folded plate.
[0014]
The invention according to claim 2 is a base material used for rooftop greening, which is mounted on a corrugated folded plate in which protrusions and grooves are alternately formed, wherein the base material is provided in the groove of the folded plate. A base material (A) having a tapered surface that can be fitted and that can make surface contact with both side surfaces of the groove, and a base material that is placed on the protrusion of the folded plate and that is disposed between the base material (A) B) and the combination of the base material (A) fitted in the groove and the base material (B) placed on the protrusions, the base material (A) and the base material ( The above-mentioned problem is solved by a base material used for rooftop greening, wherein the upper surface of B) is formed substantially flat.
[0015]
According to the present invention, the combination of the base material (A) and the base material (B) can ensure a smooth greening surface and a high level of heat insulation performance at low cost and easily. Therefore, there is no need to flatten the greening surface using a flat plate-like building material, and to prevent plant growth failure (for example, withering due to freezing of plant roots), which is the biggest drawback of the folded plate greening method. Can be.
[0016]
According to a third aspect of the present invention, in the base material used for rooftop greening according to the first or second aspect, a groove for drainage is formed on an upper surface of the base material.
[0017]
According to the present invention, the upper surface of the base material can have a further drainage function.
[0018]
According to the present invention, as described in claim 4, the ground material according to any one of claims 1 to 3 is placed on a folded plate, and a greening system having plants and soil on the ground material is constructed. It can also be configured as a characteristic rooftop greening method.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a base material used for rooftop greening in one embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a perspective view of a base material placed on a folded plate roof. The folded-plate roof 11 has a cross-sectional shape in which the protrusions 11b and the grooves 11a are alternately formed, and is fixed to a purlin 12 or the like of a steel-structured building. Such folded roofs are often used for commercial buildings, warehouse buildings, and the like because of their low cost. Being able to green roofs on folded roofs is significant because many commercial buildings can be greened on the roof.
[0020]
The base material of the present embodiment is composed of two types: a base material A that is fitted into the groove 11a of the folded plate 11, and a base material B that is placed on the protrusion 11b of the folded plate 11.
[0021]
2 and 3 show detailed views of the base material A. FIG. 2 shows the base material A fitted into the groove 11a of the folded plate 11, and FIG. 3 shows only the base material A. The base material A is formed in a pentagonal cross section, and has tapered surfaces 12, 12 having the same gradient as the side surfaces 11 c, 11 c so as to correspond to the side surfaces 11 c, 11 c of the groove 11 a of the folded plate 11. When the base material A is fitted into the groove 11a, the tapered surfaces 12, 12 of the base material A come into surface contact with both side surfaces 11c, 11c of the groove 11a. At this time, the upper surface 13 of the base material A becomes higher than the height of the top of the protrusion 11b of the folded plate 11, and a space S is formed between the lower surface 14 of the base material A and the bottom of the groove 11a of the folded plate 11. It is supposed to be. The width w1 of the base material A is equal to the width of the groove 11a, and a gap equal to the width w2 of the top of the protrusion 11b is formed between the pair of base materials A. As a material of the base material A, a resin material such as styrene foam is used in consideration of weight reduction. Here, by forming the cross-sectional shape of the base material A into a pentagonal shape, the base material A can be manufactured by, for example, chamfering a building material of styrene foam having a square cross-section. The base material A is fixed to the folded plate 11 by an adhesive means such as a double-sided tape, and the underwater portion is fixed to an end of the folded plate 11 by a stopper member. Further, in the case of a commercial building, since the length of the base material A in the longitudinal direction is also long, a plurality of base materials A may be joined in the longitudinal direction.
[0022]
As shown in FIG. 1, the base material B has a square cross section. The width of the base material B is equal to the width w2 of the top of the protrusion 11b, and its height is equal to the height from the crest to the base material A. The upper surfaces of the base material A and the base material B are formed substantially flat by a combination of the base material A and the base material B sandwiched between the base materials B. As the material of the base material B, for example, a resin material such as styrene foam is used in consideration of weight reduction. The base material B is also fixed to the projection 11b of the folded plate 11 by an adhesive means such as a double-sided tape.
[0023]
A greening system is installed on the upper surfaces of the base materials A and B formed in a substantially flat surface. Specific revegetation systems include, for example, a root-resistant sheet that prevents plant roots from entering the base materials A and B, a drainage layer that prevents plants from being rooted, and a plant that is necessary for plant growth. A water retention layer that stores a large amount of water, soil containing plant seeds such as turf and sedum, and the like are sequentially constructed.
[0024]
By configuring the base material of the greening system with two types of the base material A and the base material B as in the above-described embodiment, it is possible to secure a smooth greening work surface and a high heat insulation performance. For this reason, it is not necessary to flatten the greening surface using a separate flat plate-like building material, and also to prevent poor growing of the plant (for example, withering due to freezing of the roots of the plant) which is the biggest drawback of the folded plate greening method. be able to.
[0025]
Since a space S is formed between the lower surface 14 of the base material A and the bottom surface of the groove 11a of the folded plate 11, a slight gap between the base material A and the base material B, and a tapered surface of the base material A This space S can be used as a drainage layer for draining water that passes through a slight gap between 12, 12 and both side surfaces 11c, 11c of the groove 11a of the folded plate 11.
[0026]
FIG. 4 shows another example of the base material A. A plurality of grooves 16 extending in the longitudinal direction are formed on the upper surface of the base material A in this example. Although not shown, a similar groove may be formed in the base material B. By forming the grooves 16 on the upper surface of the base material A in this way, drainage of the greening system can be promoted. For example, the drainage layer of the greening system can be eliminated, and a water retention layer such as a water retention mat can be directly placed on the base material. Also becomes possible.
[0027]
The present invention is not limited to the above embodiment, and can be variously modified without departing from the scope of the present invention. For example, a tray type in which soil and plants are stored in a tray can be used for a greening system installed on a base material. The base material may be directly placed on the roof of the folded plate, or may be placed after the waterproof sheet is applied to the roof of the folded plate.
[0028]
【The invention's effect】
As described above, according to the present invention, by fitting the base material into the groove of the folded plate, a high level of heat insulating performance can be easily and cheaply secured. The space formed between the lower surface of the base material and the folded plate can also be used as a drainage layer.
[0029]
Further, according to the present invention, the combination of the base material (A) and the base material (B) can ensure a smooth greening surface and a high level of heat insulation performance at low cost and easily. Therefore, there is no need to flatten the greening surface using a flat plate-like building material, and to prevent plant growth failure (for example, withering due to freezing of plant roots), which is the biggest drawback of the folded plate greening method. Can be.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a base material according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a base material and a folded plate.
FIG. 3 is a cross-sectional view of a base material A.
FIG. 4 is a sectional view showing another example of a base material A.
FIG. 5 is a cross-sectional view showing a conventional flatbed type greening system and a base material.
FIG. 6 is a sectional view showing a conventional tray-type greening system.
FIG. 7 is a cross-sectional view showing a conventional groove filling type greening system and a base material.
[Explanation of symbols]
A: Base material B: Base material S: Space 11: Folded plate 11a: Groove 11b: Protrusion 11c, 11c: Both side surfaces 12, 12, Tapered surface 16: Groove

Claims (4)

It is a base material used for rooftop greening, which is mounted on a wavy folded plate in which protrusions and grooves are alternately formed,
The base material has a tapered surface that can be in surface contact with both side surfaces of the groove when fitted in the groove,
A base material used for rooftop greening, wherein a space for drainage is formed between a lower surface of the base material fitted into the groove and the groove of the folded plate. It is a base material used for rooftop greening, which is mounted on a wavy folded plate in which protrusions and grooves are alternately formed,
An underlayer material (A) having a tapered surface fitted into the groove of the folded plate and capable of making surface contact with both side surfaces of the groove;
A base material (B) placed on the protrusion of the folded plate and disposed between the base materials (A);
By the combination of the base material (A) fitted in the groove and the base material (B) placed on the protrusion, the upper surfaces of the base material (A) and the base material (B) become substantially flat. A base material used for rooftop greening characterized by being formed. The base material used for rooftop greening according to claim 1 or 2, wherein a groove for drainage is formed on an upper surface of the base material. 4. A rooftop greening method, wherein the grounding material according to any one of claims 1 to 3 is placed on a folded plate, and a greening system having plants and soil is constructed on the grounding material.

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