JP2005068800A - Greening system for folded plate roof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a greening system for a folded plate roof which is very simply and can be quickly constructed without impairing any function such as a drainage or the like of a folded plate roof. <P>SOLUTION: The greening system 10 for the folded plate roof is constituted by including a metallic folded plate roof 12, a vegetation layer 14 and a reticulate member 16. The reticulate member 16 is laid on a large number of projected sections 12A of the folded plate roof 12 and is fixed by a mounting member 20. The vegetation layer 14 is constituted of a water permeable layer 32 having a soil holding function holding soil and permeability and mounted on the reticulate member 16, a soil layer 34 laid on the water permeable layer 32 and a vegetation mat 36 laid on the soil layer 34. The vegetation mat 36 is pushed against the soil layer 34 side by a holding member 40. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a greening system for a folded-plate roof that greens the folded-plate roof, and can be applied very easily and quickly regardless of whether it is an existing or new installation, and does not impair the function of drainage of the folded-plate roof. It is related with the greening system for folded-plate roofs which enabled thin layer greening by Sedum etc. which can be made.

Conventional thin-layer greening technology lays a waterproof and root-proof sheet between the greening system and the building structure so that there is no adverse effect on the building structure due to components of plant roots and soil leachate. It is a common specification to provide a drainage layer. And the special soil reduced in weight is laid on the drainage layer, and it is the structure which plants Sedum, turf, etc.
In addition, as a construction method, there are several methods such as a method of construction on site, ease of construction, and the like, in which units are arranged and arranged in a certain size.
However, what is common to all methods is a greening system for face materials such as a flat roof or a sloped roof, and basically has a configuration on the premise that the planting base is a flat surface.

The conventional thin-layer greening system is basically premised on installation on a flat surface, and is not suitable for metal folded-plate roofs because of technical difficulties.
On the other hand, production facilities and warehouses have unique metal folded roofs to reduce construction costs and create as little space as possible. There are many cases. Thus, with respect to the roof where the metal plate is bent and is not a flat surface, the planting itself cannot be supported by the structure and members of the conventional thin-layer greening system.
The following method can be considered as a solution.
Considering the metal corrosion of the roof member, after laying a certain waterproof sheet or the like, a method of laying in a shape along the shape of the folded roof is conceivable. A conventional thin-layer greening system with flexible members can be laid along the unevenness of the folded roof. However, even if it can be laid, the inclined portion and the flat portion from the convex portion to the concave portion tend to have different water retention amounts, and as a result, plant growth tends to be uneven.
Another way of thinking is to put light soil or some drainable substance in the concave part of the folded plate and make it the same height as the convex part, then flatten the whole, and then perform normal thin layer greening.

However, this method results in an increased load even if light soil or the like having a small weight is used, and the function of the folded plate that efficiently drains rainwater is wasted.
As described above, in the conventional thin-layer greening system, there are many technical and cost problems to perform appropriate greening while maintaining the function of the metal folded half roof.
The objective of this invention is providing the greening system for folded-plate roofs which greens in the form which utilized the feature of the conventional thin layer greening system and the feature of the metal folded-plate roof together.

  In order to achieve the above object, the present invention provides a folded plate roof in which a large number of folded plates are connected to each other so that convex portions and concave portions are alternately positioned and extend in a straight line, and the folded plate roof. The planting layer comprises a water permeable layer having a soil retaining function and water permeability for retaining soil, a soil layer laid on the water permeable layer, and a plant planted on a mat. It is composed of a planting mat that is inserted and laid on the soil layer, and the planting layer is laid and fixed on the plurality of projections, and extends over the plurality of projections. It is placed and arranged on the member.

In the present invention, in order to flatten the roof shape with irregularities, a flattening member is installed on the convex portion and fixed to the roof portion. This member needs to flatten the roof portion and permanently support the planting load, and support the load due to the construction work at the time of planting construction.
After the necessary amount of rain has fallen on the plant, it needs to be discharged from the soil immediately. For this reason, a waterproof sheet or the like is completely unnecessary as in the prior art, and rather it is necessary to have no resistance to drainage.
As a method for satisfying such two requirements, it is extremely effective to use a mesh-like member having a certain strength. As a result, it is possible to allow rain to flow out quickly while supporting the load, and the functions inherent to the folded roof and greening can coexist.

  If the planting base has a partial inclination, the difference in thickness of the planting base will occur over time due to the flow of rainwater. This results in a difference in the depth at which the plant can be rooted and the total amount of water retained per unit area, which causes uneven growth of the plant, which is not preferable in view of the landscape. Therefore, it is necessary to flatten the roof shape with the unevenness of the planting base. In order to make the unevenness flat without filling any material in the recess, it is possible to lay a flat plate on the protrusion. As necessary conditions in this case, it is necessary that the load of the planting to be laid on the upper part is adequately balanced, that this member is altered due to corrosion or the like, and that the surrounding members are not adversely affected. Therefore, stainless steel or plating is essential for metals. If there is no constant strength and long-term member alteration, it is possible to use the same type of steel plate as the folded roof. The challenge is how to secure this steel plate to the folded roof. It is necessary to fully consider wind-up. Further, it is not a preferable method to directly process the folded plate roof in order to fix the steel plate to the folded plate roof because the steel plate itself of the roof member has only a waterproof function. Therefore, it is necessary to attach a base metal fitting such as bolt fastening to the round goby portion, attach a member once separated from the steel plate of the roof portion, and screw the member to the steel plate which is the ground for planting. In this case, naturally, the base metal must be made of stainless steel or plating. However, since it is usually harder than metal, there is a difficulty in processing such as drilling and screwing. Furthermore, there are many processes, and it becomes economically disadvantageous.

From another viewpoint, from the viewpoint of quick drainage of rainwater, when planting with uneven parts made flat with Galvalume steel plate, rainwater does not flow into the recesses, but through a thin drainage layer provided under the planting base. Will flow down. Usually, the rooftop greening system is often about 1cm thick in order to make the system thickness as low as possible. If the rainfall exceeds a certain level, rainwater may flow down the roof below the thickness of the drainage layer. As a result, the flow becomes a force that pulls the planting base downward, and if there is a lot of rainfall, the surface flow also increases, and soil and plant runoff are likely to occur. This leads to clogging of the fence at the end of the roof and easily develops into various troubles.
As a method for solving the problem of the method of flattening the uneven portion by the steel plate, it has been devised to use a mesh member. In the case of a mesh-like member, the fixing to the base metal fitting attached to the goby portion in the form of bolting is easier than the metal flat plate because of the mesh. Moreover, after rainwater passes a planting base, it flows down a mesh-shaped member rapidly.

A problem to be solved by the method of flattening the concavo-convex portion with a mesh-like member is whether the moisture necessary for the plant is retained because the load strength and rainwater flow down quickly. Conventionally, water is indispensable for plants, and if the whole is mesh-like, the amount of water retention was considered to be insufficient for plant growth. Further, the network structure was considered to be disadvantageous in strength.
For thin layer greening system, and almost conjunction basically that it is less weight systems is thin, it is often normal 40~50kg / m ^2. With regard to this level of load strength, for example, when a wire mesh is used as the mesh member, it becomes possible by considering the combination of the thickness of the steel wire of the wire mesh and the mesh size of the wire mesh. Moreover, regarding water retention, gravity water flows down quickly, but it is possible by using a water retention layer or a planting base material using a material having a greater water retention than the conventional method.
In other words, after laying and fixing a mesh-like member, the purpose is to promptly drain water, and a certain level of strength so that the special lightweight soil that is the water retention layer and planting base laid on the drainage layer can be laid uniformly And lay a member with mesh. On top of that, lay a foundation that takes into account water retention and plant nutrition.
Further, in a normal rooftop greening system, it is necessary to lay a root-proof sheet or the like in a portion in contact with the roof member in order to exclude the adverse effects on the roof material due to the roots of the plant. Even if you try to stretch through the board, the roots of the plant can grow in the air, so the roots will not grow any further. Therefore, a member such as a root prevention sheet is unnecessary.

FIG. 1 is a cross-sectional view of a folded-plate roof greening system in a direction orthogonal to the extending direction of the unevenness of the roof, FIG. 2 is a cross-sectional view of the greening system for folded-plate roof in the extending direction of the unevenness of the roof, FIG. ) Is a plan view of the attachment member, (B) is a front view of the attachment member, FIG. 4 is a front view of another attachment member, and FIG. 5 is a front view of the pressing member.
The greening system 10 for folded-plate roof which concerns on an Example is comprised including the metal folded-plate roof 12, the planting layer 14, the net-like member 16, etc. FIG.
The greening system 10 for folded-plate roofs is constructed without processing the metal folded-plate roof 12 regardless of whether it is an existing installation or a new installation.
The folded plate roof 12 is configured by connecting a large number of folded metal plates, and the convex portions 12A and the concave portions 12B are alternately positioned and extend in a straight line. A ridge 12C is formed in which the plates are overlapped and connected at the top of the convex portion 12A and project above the convex portion 12A.
A mesh-like member 16 is disposed on the folded roof 12 having such a configuration, and a planting layer 14 is disposed thereon.

The mesh-like member 16 is laid and fixed on a large number of convex portions 12A and extends planarly on the large number of convex portions 12A. In the present embodiment, the mesh member 16 is placed and fixed on a large number of protrusions 12C.
The mesh member 16 is fixed to the ridges 12C by a large number of attachment members 20 attached to the ridges 12C at a predetermined interval.
As shown in FIG. 3, the attachment member 20 includes a fastening portion 20A that is fastened and fixed to the protrusion 12C and on which the mesh-like member 16 is placed, a male screw portion 20B that protrudes upward from the fastening portion 20A, and a male screw portion 20B. 20C for holding the mesh-like member 16 inserted through the nut and a nut 20D coupled to the male screw portion 20B, and the mesh-like member 16 is located between the fastening portion 20A and the presser 20C. The mesh-like member 16 is fastened by a nut 20D, and is fixed on a large number of protrusions 12C.
A commercially available washer is used as the presser 20C.

The fastening portion 20A will be described in more detail. The fastening portion 20A includes a frame 2002 and a bolt 2004. The frame 2002 has an upper surface and side surfaces that are bent downward from both ends of the upper surface and face each other. A bolt 2004 is screwed to one side surface, and the male screw portion 20B protrudes from the upper surface. The frame 2002 is disposed so as to straddle the ridge 12C with a pair of side surfaces, and the ridge 12C is tightened with the other side surface of the frame by the bolt 2004 by tightening the bolt 2004, whereby the fastening portion 20A is fixed to the ridge 12C. Has been. Note that the configuration of the fastening portion 20A is different depending on the shape of the convex portion 12B or the ridge 12C of the roof.
In addition, as shown in FIG. 4, it can contact | abut to the fastening part 20A of the attachment member 20 arrange | positioned in the edge part vicinity of the mesh-shaped member 16 with the edge part of the mesh-shaped member 16, and the parting material 22 mentioned later. Providing the contact plate 20 </ b> T is advantageous in preventing displacement of the mesh member 16 and the planting layer 14 on the folded plate roof 12.

In this example, a commercially available wire mesh was used as the mesh member 16. More specifically, a wire mesh of 20 to 30 mm mesh made of a wire having a diameter of 3 mm was used as the mesh member 16. The wire mesh may be made of stainless steel or plated if it does not cause metal corrosion.
In the present embodiment, a parting material 22 having a certain height for preventing the outflow of soil or the like is provided at the edge of the mesh member 16. The parting material 22 may be made of any material as long as the soil does not flow out, changes its shape, or does not cause metal corrosion. It may be a brick or a stainless steel fitting. In the embodiment, a stainless steel plate bent and formed as the parting material 22 is fixed to the edge of the mesh member 16 by welding or with a wire.

The planting layer 14 includes a water permeable layer 32 having a soil retaining function and water permeability for retaining soil, a soil layer 34 laid on the water permeable layer 32, and a planting mat 36 laid on the soil layer 34. It consists of and.
In this embodiment, the water permeable layer 32 includes a water permeable drain plate 3202 and a water permeable sheet 3204 laid on the water permeable drain plate 3202.
The water-permeable drainage plate 3202 is not particularly limited as long as the greening base can be smoothly laid on the mesh-like member 16 without being partially biased, and rainwater can flow down quickly. That is, the material of the water-permeable drainage plate 3202 is not limited as long as the planting base constructed on the water-permeable drainage plate 3202 can be laid smoothly, receives its load, does not change over time, and rainwater flows down quickly. Absent. In practice, a water permeable drain plate (10 mm) made of polypropylene is used.
The water permeable sheet 3204 is for stopping the outflow of the special soil which is a planting base, that is, for retaining the soil and preventing the clogging of the soil and allowing the rainwater to flow down quickly. Any material can be used.

The soil layer 34 includes a water retention particle layer 3402 and soil 3404.
The water retention particle layer 3402 is configured by laying ceramic water retention particles with a uniform thickness of 10 mm on the water-permeable sheet 3204. The ceramic water retaining particles have a diameter of about 2 to 3 mm. These water retention particles fulfill an important function in securing only rainwater necessary for plants and discharging other rainwater.
The soil 3404 is laid with a uniform thickness of 30 mm on the water-retaining particle layer 3402, which has a large water-retaining power and fertilizing power and is lightweight. The large water retention and fertilization capacity of the soil 3404 is important not only for the water supply and nutrient supply of the plant, but also for the proper growth environment of the soil microorganisms for the sustainable growth of the plant. It is also important. In other words, improper decomposition of plant bodies such as roots that fall off with the metabolism of the plant is an obstacle to the sustainable growth of the plant, so sustainable plant growth is achieved by creating a soil microbial environment close to the natural soil. It can be secured.

The planting mat 36 is a plant in which plants are planted in advance, and a commercially available planting mat for plant cultivation can be used. This construction method using the planting mat 36 is easy to carry and quick to construct, and is important for ensuring a certain ratio of green coverage.
The planting mat 36 is desirably fixed in order to prevent scattering due to wind. In this embodiment, the planting mat 36 is pressed against the soil layer 34 by the presser member 40.
Various configurations of the presser member 40 that presses the planting mat 36 against the soil layer 34 are conceivable. In this embodiment, the presser member is provided by using the attachment member 20 that attaches the mesh member 16 to the folded plate roof 12. 40 is configured.

That is, as shown in FIG. 3, the attachment member 20 includes a fastening portion 20A, a male screw portion 20B that protrudes upward from the fastening portion 20A, a presser 20C, and a nut 20D. The male screw portion 20B However, as shown in FIG. 5, a large number of mounting members 20 having a male screw portion 20B length of about 70 mm are prepared. For example, one in three has a length of 70 mm. The attachment member 20 having the male screw portion 20B is used. Then, the male screw portion 20B is inserted through the planting layer 14 to protrude above the planting mat 36, the presser 40A is inserted into the male screw 20B portion, the nut 40B is screwed, and the nut 40B is clamped by tightening. The tool 40A presses the planting mat 36 against the soil layer 34 side.
Therefore, in the present embodiment, the male screw part 20B attached and fixed to the mesh member 16 or the folded plate roof 12, the presser 40A through which the male screw part 20B is inserted, and the nut 40B screwed into the male screw part 20B. A pressing member 40 is configured.
Various configurations of the presser member 40 for pressing the planting mat 36 against the soil layer 34 are conceivable as described above. However, as in the embodiment, the attachment member 20 for attaching the mesh member 16 to the folded roof 12 is used. If the pressing member 40 is configured, the pressing member 40 can be manufactured at a low cost, which is extremely advantageous in reducing the cost.

It is sectional drawing of the greening system for folded-plate roof in the direction orthogonal to the extending direction of the unevenness | corrugation of a roof. It is sectional drawing of the greening system for folded-plate roof in the extending direction of the unevenness | corrugation of a roof. It is explanatory drawing of an attachment member. It is explanatory drawing of another attachment member. It is a front view of a pressing member.

Explanation of symbols

10 ... Folding roof greening system, 12 ... Folded roof, 14 ... Planting layer, 16 ... Mesh member, 20 ... Mounting member, 32 ... Permeable layer, 34 ... Soil layer, 36 ... planting mat, 40 ... presser member.

Claims (6)

A folded plate roof in which a large number of folded plates are connected, and the convex portions and the concave portions are alternately positioned and extend linearly;
It consists of a planting layer installed on the folded plate roof,
The planting layer is a water permeable layer having a soil holding function and water permeability for holding soil, a soil layer laid on the water permeable layer, and a plant planted in a mat and laid on the soil layer. A planting mat and
The planting layer is placed and disposed on a mesh-like member that is laid and fixed on the multiple convex portions and extends over the multiple convex portions,
A greening system for folded-plate roofs.   The folded plate roof is formed by connecting the folded plates adjacent to each other at the upper part of the projecting portion to form a projecting ridge projecting above the projecting portion, and the mesh-shaped member is formed on the projecting ridge. The greening system for folded-plate roofs according to claim 1, wherein the greening system is mounted.   The mesh member is attached and fixed on the protrusion by an attachment member, and the attachment member is fastened and fixed to the protrusion, and a fastening portion on which the mesh member is placed, and above the fastening portion. A male threaded portion projecting into the male threaded portion, a presser that is inserted through the male threaded portion and holds a mesh-like member, and a nut that is coupled to the male threaded portion, and has a mesh shape between the fastening portion and the presser The greening system for folded plate roof according to claim 2, wherein the member is positioned and fixed by a nut.   The greening system for folded-plate roof according to claim 1, further comprising a pressing member that presses the surface of the planting mat against the soil side.   The mesh-shaped member is attached and fixed on the ridge by an attachment member, the surface of the planting mat is pressed against the soil side by a pressing member, and the attachment member is clamped and fixed to the ridge. A fastening portion on which a mesh-like member is placed, a male screw portion that protrudes upward from the fastening portion, a presser that is inserted through the male screw portion and presses the mesh-like member, and is coupled to the male screw portion A mesh-like member is located between the fastening portion and the presser and is fastened and fixed by the nut, and the presser member passes through the planting layer and protrudes above the planting mat. The male screw part, a presser inserted through the male screw part, and a nut screwed into the male screw part, and the presser presses the planting mat against the soil layer side by tightening the nut. Special Folding plate roofing greening system of claim 1 wherein. The greening system for folded-plate roof according to claim 1, wherein a parting material for preventing the outflow of soil is attached to an edge of the mesh member.

Images