JP4254106B2 - Thin rooftop greening facility - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a thin-layer rooftop greening facility suitable for buildings such as buildings, condominiums, and detached houses.
[0002]
[Prior art]
In recent years, for the purpose of improving the urban environment against global warming and the like, rooftop greening facilities that can be installed by effectively utilizing the rooftops of buildings and condominiums and the space on the roofs of houses are becoming widespread.
As such a rooftop greening facility, a rooftop garden type and a thin-layer greening type have been put into practical use. Particularly, a thin-layer greening type rooftop greening facility (hereinafter referred to as a thin-layer rooftop greening facility) is a rooftop garden type. It is much lighter than the rooftop greening facility, can be easily applied to existing buildings, maintains good drainage, and suppresses temperature changes on the rooftop of the building. It has attracted attention because it has excellent advantages such as the ability to improve durability, the heat insulation and heat retention of buildings and the reduction of utility costs.
[0003]
As the thin-layer rooftop greening facility, a waterproof sheet is laid on the building, and a thin-layer greening laminate is installed on top of the drainage mat, root shield sheet, and vegetation mat. Has been put to practical use. And, as a vegetation mat, by using a vegetation centered on sedum with excellent drought resistance in a thin culture soil and making it into a mat shape, it is possible to set the water retention amount for a thin greening laminate low, It is configured to reduce the weight of the layer greening laminate and to prevent a decrease in the durability of the building due to a decrease in temperature change and a blockage of ultraviolet rays.
[0004]
Moreover, in the said thin-layer rooftop greening equipment, as a partition material arrange | positioned along the side edge of a thin-layer greening laminated body, for example in Unexamined-Japanese-Patent No. 2001-190152, it arrange | positions between a thin-layered greening laminated body and a building. And a plate-like partition portion that extends upward from the side edge of the fixed portion and is disposed along the outer surface of the thin greening laminate, and bends the belt in the middle thereof A substantially L-shaped partition material has been proposed. In addition, this publication describes a method of fixing a partition material by driving a bolt into a ceiling slab as a method of fixing the partition material, and has a length at the lower end of the partition portion as a drainage hole for rainwater. Square drainage holes formed at intervals in the direction are described.
[0005]
[Problems to be solved by the invention]
By the way, since the said thin-layer rooftop greening facility is the greening facility which attracted attention comparatively recently these 2 to 3 years ago, sufficient examination is not made | formed about the structure yet. For example, rainwater for a thin rooftop greening facility flows into the drainage mat from the vegetation mat, moves in the drainage mat in the in-plane direction due to the slope of the rooftop of the building and the roof, and the side edge of the thin rooftop greening facility. However, since the drainage mat and the partition material become drainage resistance, the present applicant has found that the rainwater drainage has the following problems.
[0006]
In other words, at the outer edge of the thin rooftop greening facility, rainwater tends to stay due to the drainage resistance at the partition, so the water level rises when the amount of rainfall increases, and the rainwater gets over the partition material to the outside. The vegetation mat cultivated soil will be washed away with this overflow water, and it may be a fatal problem that the vegetation will die. In addition, in the central part of the thin rooftop greening facility, it is necessary for the rainwater to move from the rain point to the drainage hole in the drainage mat, and the distance that the rainwater travels (drainage distance) becomes longer. The drainage resistance in the horizontal direction makes it easy for stagnation of the rainwater, and when the amount of rainfall increases, the water level rises and the vegetation mat overflows into the vegetation mat. It moves to the outer edge of the area, and an area with less soiling occurs. In particular, if light soil that is lighter than water is used as cultivated soil, the cultivated soil easily moves due to the flow of rainwater overflowing in the vegetation mat, and the cultivated soil moves to the upper side of the vegetation and is easily blown away by the wind. This further encourages the problem of soil transfer and runoff.
[0007]
Since the vegetation mat is installed directly on the waterproof mat and does not have a drain mat, the thin roof greening facility described in the above publication has a drain resistance that is significantly higher than that of the drain mat. The vegetation mat moves horizontally and is discharged to the outside, and the design is such that the drainage mechanism is completely ignored.
[0008]
Further, in the partition material described in the above publication, since the drainage holes are formed in the lengthwise direction with respect to the partition material, the partition material is provided even when the drainage mat is disposed below the vegetation mat. The drainage holes are not drained from each other, and the drainage mat itself becomes a drainage resistance against rainfall in the horizontal direction, so that adjacent drainage holes like the thin-layer rooftop greening facility 100 shown in FIG. Between 101, a portion where rainwater tends to stay is generated in a region 102 indicated by hatching near the outer edge of the thin-layer rooftop greening facility 100 and a region 103 indicated by hatching in the center of the thin-layer rooftop greening facility 100. When the amount of rainwater increases, the rainwater staying in the region 102 gets over the partition material 104 and overflows to the outside, and along with this overflow water, the soil of the vegetation mat is washed away to the outside, or the rainwater staying in the region 103 Overflowing into the vegetation mat, the cultivation soil moves to the outer edge side of the thin rooftop greening facility with the flow of rainwater, and an area with little cultivation is generated in the area 103 in the center of the thin rooftop greening facility, This can lead to a fatal problem of vegetation dying.
[0009]
In addition, as the drainage mat, synthetic resin fiber material that is molded into a three-dimensional net is generally used, but sufficient examination regarding pressure resistance has not been made, such as decrease in pressure resistance in a wet state and aging As a result, the thickness of the drainage mat is reduced, the drainage resistance is increased, the allowable drainage amount is lowered, and the drainage performance is generally lowered.
[0010]
Furthermore, in the partition material described in the above publication, a bolt insertion hole is formed in the waterproof sheet for the purpose of fixing the partition material to the slab with bolts, and rainwater flows from the portion between the slab and the waterproof sheet. There is also a problem that it penetrates into the slab through the gap between the bolt and the slab and adversely affects the building.
[0011]
In addition, the partition material used in the thin-layer rooftop greening facility is individually fixed to the building like the partition material described in the above publication, but is generally not connected to each other. In addition, when fixing the partition material without using bolts as described above, that is, when fixing the partition material with an adhesive or the like, it becomes difficult to ensure sufficient mounting strength to the building, such as strong wind It is also conceivable that the partition material is blown away.
[0012]
An object of the present invention is to provide a thin-layer rooftop greening facility that can sufficiently secure drainage performance and improve durability by adopting a drainage structure based on the characteristics of a drainage mat.
[0013]
[Means for Solving the Problem and Action]
  A thin-layer rooftop greening facility according to the present invention includes a plurality of drainage mats composed of a three-dimensional network structure installed on a rooftop of a building.It is composed of a core material made of a synthetic resin fiber material for imparting pressure strength and a mesh-like synthetic resin fiber material with a finer mesh than the core material. The drainage mat has a surface material that is externally covered and is heat-sealed to the core material to integrate the two.And a vegetation mat installed on the upper side over the plurality of drainage mats, the drainage mats are installed with a space therebetween, and drainage grooves are formed between adjacent drainage mats.
[0014]
  In this thin-layer rooftop greening facility, drainage grooves are formed between adjacent drainage mats, so that the drainage resistance in the horizontal direction within the drainage mat acts until the rainwater flows from the drainage mat to the drainage groove. However, once it flows into the drainage ditch, it passes through the drainage ditch smoothly without any resistance and is discharged out of the thin rooftop greening facility. In other words, in this thin-layer rooftop greening facility, the drainage distance in the drainage mat with drainage resistance can be set much shorter compared to conventional facilities, not to mention the vicinity of the outer edge of the thin-layer rooftop greening facility, Rainwater can be discharged smoothly even in the central part of the thin rooftop greening facility. For this reason, it is possible to prevent stagnation of rainwater in the vicinity of the outer edge of the thin rooftop greening facility and in the center, and to effectively prevent the soil from being washed away and moved due to the rise in the water level of the rainwater and disappearance due to the wind.
Further, as the drainage mat, a core material made of a synthetic resin fiber material for imparting pressure strength, and a mesh-like synthetic resin fiber material with a finer mesh than the core material, the upper and lower surfaces of the core material It has a surface material that covers both the left and right side surfaces, and uses a drainage mat that integrates the surface material by heat-sealing the surface material to the core material, reducing the amount of core material that exhibits strength. The drainage resistance in the horizontal direction can be reduced, and the vegetation mat can be received with a fine mesh surface material, preventing the vegetation mat from sinking into the drainage mat and draining in the horizontal direction in the drainage mat. In addition to preventing the performance from being lowered, the core material can be prevented from falling down by heat-sealing the surface material to the core material, and the pressure-resistant strength of the drainage mat can be easily improved.
[0015]
Here, it is preferable to set the width of the drainage groove to 30 to 100 mm. When the width of the drainage groove is less than 30 mm, sufficient water flow performance cannot be ensured, and when the amount of rainfall increases, the rainwater tends to stay in the center of the thin rooftop greening facility. In order to prevent the mat from sinking into the drainage groove, it is necessary to separately provide a reinforcing material for supporting the vegetation mat on the upper side of the drainage groove, which increases the manufacturing cost of the thin-layer rooftop greening facility.
[0016]
It is preferable to set the depth of the drainage groove to 20 to 50 mm. When the depth of the drainage groove is less than 20 mm, sufficient water flow performance cannot be secured, and when the amount of rainfall increases, the rainwater tends to stay in the center of the thin rooftop greening facility, and if it exceeds 50 mm, The thickness of the drainage mat increases, and its production cost increases.
[0017]
(Groove lid)
A groove lid that closes the upper surface of the drainage groove to prevent the vegetation mat from sinking into the drainage groove, is configured to be wider than the drainage groove and is installed on the upper side of the adjacent drainage mat. A groove lid having a lid body and a pair of position restricting portions extending downward from the lid body along the side edge of the adjacent drainage mat may be provided. When such a groove cover is provided, the equipment cost is somewhat higher, but the width of the drainage groove is sufficiently secured to improve the water flow performance, and the vegetation mat sinks in the drainage groove and the groove cross section is reduced. It is possible to prevent this and maintain the desired water flow performance over a long period of time. Moreover, since the space | interval of a drainage mat is set uniformly by the position control part, the fluctuation | variation of the groove width of a drainage groove by an earthquake etc. can be prevented.
[0018]
It is preferable that the position restricting portion of the groove lid is formed in a plate shape, and a plurality of drain holes that communicate the drain mat and the drain groove are formed in the position restricting portion. With this configuration, by providing the position restricting portion while sufficiently securing the strength of the position restricting portion, the side surface of the drainage groove becomes smooth and rainwater flows easily, so that the water flow performance is further improved. Can be measured.
[0019]
(Drain mat)
The area of the upper surface of the drainage mat is 2500-40000 cm²It is preferable to set to. The area of the top surface of the drain mat is 2500cm²If it is less than 1, sufficient drainage performance can be ensured, but the number of fasteners for fixing the drainage mat and vegetation mat to the building increases, resulting in high production costs and complicated construction work.²When the amount of water exceeds the value, the water level at the center of the drainage mat tends to increase when the amount of rainwater increases.
[0020]
The maximum drainage distance from the centroid of the drainage mat to the outer edge is preferably set to 25 to 100 cm. When the drainage distance is less than 25 cm, sufficient drainage performance can be secured, but the number of fasteners for fixing the drainage mat and vegetation mat to the building increases, resulting in an increase in production cost and complicated construction work. If it exceeds 100 cm, the water level at the center of the drainage mat tends to be high when the amount of rainwater increases.
[0021]
180 to 900 kg / m of pressure strength of 10% deformation when the drainage mat is wet²It is preferable to set to. Pressure strength is 180kg / m²If it is less than the required strength, the required strength cannot be guaranteed for a long time even in the case of a house with the lowest load limit. Pressure strength is 900kg / m²Exceeding this is most desirable, and sufficient strength can be guaranteed for any chamber type load limit. However, the production cost of the water mat is increased accordingly.
[0023]
(securing bracket)
Fixing brackets for fixing the drainage mat and the vegetation mat to a building, including a base plate, a support column that is erected and fixed to the base plate, an intermediate plate that is movably mounted in the middle of the support column, and an end of the support column A top plate removably fixed to the section, a base plate is installed on the lower side of the adjacent drainage mat, an intermediate plate is installed on the upper side, and the top plate is arranged on the upper side of the vegetation mat. You may provide the fixture which integrates a board | plate with a support | pillar. Such a fixing bracket is fixed to a waterproof sheet laid on a building with an adhesive or a double-sided tape at regular intervals. In this invention, the fixing bracket is configured in a three-piece structure, the drainage mat is sandwiched between the base plate and the intermediate plate, and the adjacent drainage mats are integrally connected. Therefore, all the drainage mats to be laid are integrally connected. And since a vegetation mat can be fixed to this, the attachment intensity | strength of the vegetation mat and a drainage mat with respect to a building can be improved significantly.
[0024]
The fixing metal column is constituted by a bolt member, a first nut member for fixing the base member to the column, a second nut member for sandwiching the drainage mat between the base plate and the intermediate plate, and a top plate. It is provided with a cap nut for pressing against the vegetation mat. By comprising in this way, it becomes possible to comprise a fixture with a general purpose product, and height adjustment can be easily performed by the change of a support | pillar bolt member. Further, it is possible to prevent the vegetation mat from being peeled off by strong winds while reducing the production cost as much as possible. In addition, since the cap nut can be screwed onto the tip of the column to prevent the column from protruding upward, the tip of the column can be used when moving on a thin rooftop greening facility for maintenance and inspection. It is possible to prevent a problem that the part pierces the foot, and to improve the safety of work during maintenance inspection.
[0025]
An engaging claw that engages with the drainage mat may be integrally formed on the base plate and the intermediate plate, and an engaging claw that engages with the vegetation mat may be integrally formed on the top plate. In this case, the connection strength between adjacent drainage mats can be further improved, and the engagement strength between the top plate and the vegetation mat can be increased to further effectively prevent the vegetation mat and the drainage mat from peeling off due to strong winds or the like.
[0026]
A positioning portion that contacts the side edge of the drainage mat and positions the side end position of the drainage mat may be integrally formed on the base plate. With this configuration, the base plate is fixed at set intervals on the waterproof sheet of the building, and the drain mat is placed at the proper position by contacting the side edge with the positioning portion of the base plate. Therefore, the workability of the drainage mat construction work can be greatly improved.
[0027]
(Partition material)
A partition material disposed along a side edge of the thin-layer greening laminate including the drainage mat and the vegetation mat, the fixing portion disposed below the drainage mat, and an outer surface of the thin-layer greening laminate And a partition member formed by providing a drainage part formed by punching a plurality of drainage holes into a substantially lower part of the partitioning part over the substantially entire length of the partitioning part. May be. In this case, the total opening area of the drainage holes can be sufficiently secured by providing a drainage part formed by punching a plurality of drainage holes over the substantially entire length of the lower part of the partitioning part. The holes can be distributed substantially uniformly over the entire length of the partition material. For this reason, it becomes possible to perform the drainage from the thin-layer greening laminate to the outside smoothly and uniformly over the entire length of the partition material, and the partial rainwater of the thin-layer rooftop greening equipment resulting from the poor drainage of the partition material. The rise of the water level and the overflow of the rainwater in the partition material can be prevented, and the loss and movement of the soil due to the rainwater and the loss due to the wind can be effectively prevented.
[0028]
It is preferable to form the drainage portion only below the position facing the root shielding sheet laminated on the thin greening laminate. As a thin greening layered product, a laminate of a drainage mat, a root shielding sheet and a vegetation mat is widely adopted, and if a drainage part is formed above the root shielding sheet, a vegetation such as sedum can be formed from the drainage hole. Since the roots extend to the outside and the appearance of the thin-layer rooftop greening facility deteriorates, it is preferable to form the drainage portion only below the position facing the root shielding sheet.
[0029]
The total opening area of the drainage holes per unit length of the partition is 12000-30000 mm²/ M. The total opening area of the drainage holes in the unit length of the partition is 30000 mm²If it is larger than / m, the strength of the member in the drainage section cannot be sufficiently secured, and 12000 mm.²If it is smaller than / m, sufficient drainage performance cannot be secured, so 12000-30000 mm²/ M is preferably set.
[0030]
You may provide a partition material so that the outer periphery drainage groove | channel connected to a drainage groove may be formed between a partition part and a drainage mat. In this case, the variation in the amount of rainwater supplied from the drainage mat to the partitioning part at each part in the lengthwise direction of the partitioning part is smoothed in the outer edge drainage groove, and the drainage from the thin greening laminate to the outside is partitioned. It becomes possible to carry out more uniformly over the entire length of the material, and it becomes possible to further improve the drainage performance of the partition material.
[0031]
Further, a positioning part for positioning the side end position of the drainage mat on the fixed part is formed at a position spaced apart from the partitioning part, and the side edge of the drainage mat is brought into contact with the positioning part to form a thin layer By installing the greening laminate, an outer edge drain groove having a certain width may be formed between the drain mat and the partition. With this configuration, when the thin-layer greening laminate is constructed along the partition material, the partition material is constructed by bringing the side edge of the drain mat into contact with the positioning portion, so that the partition portion and the drain mat side It becomes possible to easily form a drainage groove having a constant width between the edges. The positioning portion may be raised in advance, but if it is configured to be raised at the time of construction, the partition material can be arranged in a compact manner, which is preferable in terms of improving transportability and storability. Furthermore, it is preferable to provide such a positioning portion because the displacement of the drainage mat in the horizontal direction due to an earthquake or the like can be prevented.
[0032]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1, 2, 10, and 12, the thin-layer rooftop greening facility 1 includes a waterproof sheet 3 laid on a slab or roof of a building 2, and a thin-layer greening installed on the waterproof sheet 3. The laminated body 4, the partition material 10 provided along the side edge of the thin greening laminated body 4, and the fixing metal fitting 50 for fixing the thin greening laminated body 4 to the waterproof sheet 3 are provided.
[0033]
As the waterproof sheet 3, a well-known waterproof sheet 3 such as a vulcanized rubber type, a non-vulcanized rubber type, a vinyl chloride resin type, an ethylene vinyl acetate resin type or a modified asphalt type can be adopted. 2 is laid on the slab and roof and fixed to the building 2 with an adhesive. Moreover, when constructing this waterproof sheet 3, the raw material of the general-purpose waterproof sheet of width 1.0-2.0m is conveyed to a construction site, and an adhesive is applied to the slab and roof of the building 2 at the construction site. In the applied state, a part of the side edge is overlapped and laid at a necessary place, and the overlapped portion is fused to be applied. The laying range of the waterproof sheet 3 only needs to be formed at least in the entire region below the thin greening laminate 4, but may be provided so as to protrude from the thin greening laminate 4. Further, instead of the waterproof sheet 3, a waterproof primer layer may be formed by applying or spraying waterproof paint, or an existing waterproof layer formed on the building 2 may be used as it is. May be.
[0034]
The thin-layer greening laminate 4 is formed by laminating a drainage mat 5, a root shielding sheet 6 and a vegetation mat 7 in order from the lower side, and is thin-layer greening so that it can be applied to an existing building 2. The total weight of the laminate 4 and the waterproof sheet 3 is set so as to be smaller than the allowable load according to the allowable load of the Building Standard Law. Specifically, the allowable load varies depending on the type of room, for example, 130 kg / m for a house.²In the office, 180kg / m²In the case of a classroom, 210 kg / m²In the case of department stores or store floors, 240 kg / m²Therefore, the total weight of the thin greening laminate 4 and the waterproof sheet 3 is set to be smaller than these allowable load loads. However, if the weight is changed depending on the type of the room, it is versatile. Therefore, 130kg / m on the basis of the allowable load capacity of the house with the smallest allowable load capacity.²Or less, preferably 20 to 60 kg / m²Will be set to.
[0035]
The vegetation mat 7 is a well-known configuration in which a relatively dry vegetation is planted in a thin cultivated soil, such as sedums and lawns belonging to the family of diatoms such as album, tight gome, reflexum, malba mannen, mexican mannen, etc. belongs to. As the vegetation mat 7, an arbitrary shape corresponding to the shape of the thin-layer rooftop greening facility 1 can be adopted. What was shape | molded in the shape can be utilized suitably.
[0036]
The root shielding sheet 6 allows water from the vegetation mat 7 to pass through but blocks the passage of vegetation roots, and impregnates a woven fabric or non-woven fabric made of synthetic fibers or natural fibers with excellent water permeability into a chemical that the roots dislike. Therefore, the side end portion is bent upward along the side edge of the vegetation mat 7. This root shield sheet 6 can be of any thickness, but the thickness of the thin greening laminate 4 is made as thin and light as possible, so it is made as thin as possible within the range that can prevent the passage of vegetation roots. For example, the thickness is set to 2 mm or less. As the root shield sheet 6, for example, a general-purpose sheet having a width of 1.0 to 2.0 m is used, and the adjacent root shield sheet 6 is constructed by overlapping its side edges by 30 cm.
[0037]
The drainage mat 5 is for smoothly discharging water from the vegetation mat 7 that has passed through the root shielding sheet 6 to the outside of the thin greening laminate 4, and from a synthetic resin fiber material for imparting pressure resistance. Consisting of a core material (not shown) and a mesh material made of mesh-like synthetic resin with a finer mesh than the core material, and a surface material that is sheathed on at least the upper and lower surfaces of the core material and the left and right side surfaces on both sides in the longitudinal direction. The material is heat-sealed to the core material, and the both are integrated into a network structure with many voids. More specifically, a core material obtained by forming a synthetic resin fiber material into a mat shape by an extrusion molding method and a cylindrical or flat surface material formed by knitting a synthetic resin fiber material into a net shape is manufactured. Produce and wrap the core material in a cylindrical surface material, wrap a flat surface material around the core material, heat and fuse them together, and integrate them, ensuring a required pressure strength and a large space It is configured as a network structure. In this drainage mat 5, since the upper and lower surfaces and the left and right side surfaces of the core material are covered with the surface material and the core material and the surface material are fused, it is possible to prevent each loop constituting the core material from falling down. The pressure-resistant strength of the drainage mat 5 can be improved while adopting the fiber material having the same wire diameter. However, a drainage mat having an arbitrary configuration can be adopted as long as sufficient pressure resistance and drainage performance can be ensured and can be manufactured at low cost.
[0038]
The long-term load strength of the drainage mat 5 (however, the deformation amount is 10%) is 1800 kg / m when fully loaded in a wet state.²Although it is preferable to set the above, if the pressure strength is increased, the fiber diameter constituting the core material of the drainage mat 5 is correspondingly increased and the production cost is increased. Therefore, the production cost and the safety factor are considered. 180-900 kg / m²It is preferable that Moreover, the short-term load strength (however, the deformation amount is 10%) is 3000 kg / m at the local load in the dry state.²It is preferable to set the above, but considering production cost and safety factor, 2000 to 7000 kg / m²It is preferable to make it. In addition, when the drainage groove 8 is formed as described later, if the height of the drainage mat 5 is lowered, the drainage performance in the drainage mat 5 and the water passage performance in the drainage groove 8 are lowered accordingly. The load when the amount of deformation of the drainage mat 5 capable of sufficiently securing the performance and water passing performance was 10% was determined.
[0039]
Any material can be used as the material for the drainage mat 5 as long as it has excellent environmental resistance and can secure a sufficient pressure resistance. For example, a synthetic resin material such as polyethylene, polypropylene, or polyethylene terephthalate can be suitably used. In particular, polypropylene is suitable because it has excellent properties such as acid resistance, alkali resistance, and microbial resistance.
[0040]
The structure which characterizes the present invention is that the drainage mat 5 having such a structure is arranged on the waterproof sheet 3 with a space between each other, thereby forming drainage grooves 8 between the drainage mats 5. As shown in the figure, drainage grooves 8 are formed in a lattice pattern on the entire thin-layer rooftop greening facility 1, and the drainage mat 5 is configured in a relatively small mat shape so that the outer edge from the centroid of the drainage mat 5 In other words, the maximum drainage distance to the drainage groove 8 is set as short as possible, the accumulation of rainwater in the drainage mat 5 is reduced, the drainage performance of the thin rooftop greening facility 1 is improved overall, The point is that it is configured to prevent the loss and movement. The root shielding sheet 6 and the vegetation mat 7 are laid over a plurality of adjacent drainage mats 5. Further, a plurality of drain mats disposed adjacent to each other may be defined as one unit, and drain grooves may be formed between adjacent units.
[0041]
For this reason, the thickness of the drainage mat 5 (depth of the drainage groove 8), the area of the upper surface of the drainage mat 5, the maximum drainage distance from the centroid of the drainage mat 5 to the outer edge, and the width of the drainage groove 8 are as follows: Is set to
If the thickness of the drainage mat 5 is less than 20 mm, the depth of the drainage groove 8 becomes low and sufficient water passage performance cannot be secured, and if it exceeds 50 mm, the production cost of the drainage mat 5 increases. It is set to 20-50 mm.
[0042]
Since the drainage mat 5 can be fixed to the four corners of the drainage mat 5 together with the vegetation mat 7 by the fixing bracket 50, the groove width of the drainage groove 8 is basically subtracted from the plane size of the vegetation mat 7. However, if the area of the upper surface of the drainage mat 5 becomes too large, stagnation of rainwater tends to occur at the center of the drainage mat 5, and if it is too small, the drainage of the building 2 will occur. Since the number of fixing metal fittings 50 for fixing the mat 5 is increased, the manufacturing cost is increased, and the construction work is complicated. Therefore, the area of the upper surface of the drainage mat 5 is 2500 to 40000 cm.²It is preferable to set to.
[0043]
When the maximum drainage distance from the centroid of the drainage mat 5 to the outer edge is less than 25 cm, stagnation of rainwater tends to occur at the center of the drainage mat 5, and when it exceeds 100 cm, drainage to the building 2 Since the number of the fixing metal fittings 50 for fixing the mat 5 increases, the manufacturing cost increases and the construction work becomes complicated, so it is preferable to set to 25 to 100 cm.
[0044]
If the width of the drainage groove 8 is less than 30 mm, the amount of drainage cannot be secured sufficiently, and if the amount of rainfall increases, rainwater may stay in the central part of the thin rooftop greening facility 1, and 100 mm If it exceeds, it is necessary to separately provide a reinforcing material for supporting the vegetation mat 7 in the drainage groove 8 so that the vegetation mat 7 does not sink into the drainage groove 8, and the manufacturing cost of the thin rooftop greening facility 1 increases. Therefore, it is preferable to set to 30 to 100 mm.
[0045]
In this way, the drainage mat 5 is configured in a relatively small mat shape, and the drainage grooves 8 are formed between the adjacent drainage mats 5 so that the drainage grooves 8 are formed in a lattice pattern in the entire thin-layer rooftop greening facility 1. As a result, the horizontal movement distance (drainage distance) of the rainwater in each drainage mat 5 can be set as short as possible, so that the retention of the rainwater in the drainage mat 5 can be reduced, and the drainage mat 5 can be drained. The rainwater discharged into the groove 8 can be smoothly discharged out of the thin rooftop greening facility 1 from the drainage groove 8 having a low flow resistance, so that the cultivation soil can be prevented from being lost or moved due to poor drainage.
[0046]
(Partition material)
Next, the partition material 10 arrange | positioned at the outer edge part of the thin-layer rooftop greening equipment 1 is demonstrated.
As shown in FIGS. 2 to 5, the partition member 10 is formed by bending a metal strip of a certain length, such as a stainless steel plate or an iron plate, about 90 ° in the middle in the width direction, and has a substantially L-shaped cross section. The fixing part 11 disposed between the side edge of the thin greening laminate 4 and the waterproof sheet 3, and upward from the side edge of the fixing part 11 along the side surface of the thin greening laminate 4. And a partition 12 that extends. The partition member 10 is connected in the length direction via connecting means 13 described later, and is continuously arranged along the outer edge of the thin greening laminate 4. In addition, when it comprises with the raw material which is easy to rust like an iron plate, a rust prevention process will be given after a process.
[0047]
An outer peripheral drain groove 9 is formed between the drain mat 5 and the partition portion 12 of the partition member 10, and the outer peripheral drain groove 9 communicates with the drain groove 8. In this way, when the outer peripheral drainage groove 9 is formed, the variation in the amount of rainwater flowing from the drainage groove 8 to the outer edge of the thin rooftop greening facility 1 can be smoothed in the outer edge drainage groove 9, so that the drainage from the partition member 10 can be performed. It becomes possible to carry out more uniformly over the whole length, and it becomes possible to further improve the drainage performance at the outer edge portion of the thin-layer rooftop greening facility 1. However, a structure with good drainage, such as gravel, is arranged outside the thin-layer greening laminate 4 without providing the partition material 10 so that the entire side edge of the thin-layer greening laminate 4 can be drained uniformly. When configured, the outer peripheral drainage groove 9 may be omitted.
[0048]
A folded portion 14 is formed at the upper end portion of the partition portion 12, and is configured to improve the strength of the partition member 10 and improve safety when handling the partition member 10. A plurality of drain holes 15 are integrally formed in a punched wire mesh shape (punching metal shape), and a drainage portion 16 for draining rainfall and the like from the thin greening laminate 4 to the outside is formed by the plurality of drain holes 15. Yes.
[0049]
The drainage hole 15 can be formed in any shape such as a round hole shape, a square hole shape, an elongated slit shape, a cross shape, a heart shape, a star shape, or a combination thereof. Moreover, as shown in FIG. 4, you may arrange | position in zigzag form and may arrange | position in the matrix form of length and breadth. Furthermore, when forming in a slit shape, it may be elongated in the vertical direction, may be elongated in the horizontal direction, or may be elongated in the oblique direction. Furthermore, although all the drain holes 15 may be set to the same size, the drain holes 15 of different sizes may be formed for the purpose of improving the design, for example, the size is increased as going upward. You may set small.
[0050]
Although it is possible to provide the drainage holes 15 on the entire surface of the partition part 12, it is preferable to form the drain holes 15 only in the lower half part of the partition part 12 because the strength of the partition part 12 decreases. More specifically, as shown in FIG. 2, the drainage hole 15 is disposed below the position corresponding to the root shielding sheet 6 of the partition part 12, and the roots of the vegetation extend from the drainage hole 15 to the outside. The thin rooftop greening facility 1 is configured to prevent the appearance from being deteriorated. Moreover, in order to ensure the drainage performance as well as possible, it is preferable to form up to the lower end portion of the partition portion 12. In particular, if a part of the drainage hole 15 is formed on the fixed part 11 side, the drainage hole 15 can be formed up to the boundary part between the fixed part 11 and the partition part 12 and the drainage performance is improved. In addition, it is preferable because the partitioning material 10 can be bent into an L shape to improve workability when the partitioning portion 12 and the fixing portion 11 are formed. However, in FIG. 3, the partition member 10 is folded so that the boundary portion between the fixing portion 11 and the partition portion 12 is located in the middle portion of the drainage hole 15 at the lowermost end, but the boundary portion is drained in the middle portion in the width direction. The partition member 10 may be bent so as to be positioned in the hole 15. Further, as shown in FIG. 5, when the outer edge portion of the root shielding sheet 6 is bent upward, the drain hole 15 may be formed up to the upper end position of the root shielding sheet 6. Further, the upper edge portion of the root shielding sheet 6 may be mounted in the folded portion 14, and the drain hole 15 may be formed up to the upper end portion of the partition portion 12.
[0051]
The diameter of the drain hole 15 is preferably set to 4 to 6 mm in order to ensure sufficient strength of the partition portion 12 while ensuring sufficient drainability. The total opening area of the drainage holes 15 per unit length of the partitioning portion 12 in the portion facing the drainage mat 5 is 12000 to 30000 mm.²/ M, and the opening ratio of the drainage holes 15 in the drainage section 16 is set to 30 to 65%. Such a setting is preferable because the mechanical strength of the partition member 10 can be improved while ensuring sufficient drainage performance.
[0052]
The fixing part 11 is formed with triangular bending notches 17 whose front ends are located at the lower end of the partitioning part 12 at regular intervals, and the partitioning material 10 is laminated in a thin greening layer in the bending notch 17. It is configured to bend along the outer edge of the body 4. The number of the bending notch portions 17 can be arbitrarily set. However, if the interval is too wide, it is difficult to arrange the cutout portions 17 along the side edge of the thin greening laminate 4. Since sufficient strength cannot be ensured, it is preferably formed at a rate of 200 to 300 mm.
[0053]
The shape of the notch 17 for bending is formed in a triangular shape, but if it is cut out at least from the side edge of the fixing portion 11 to the lower end of the partitioning portion 12, it is formed in a trapezoidal shape or an elongated slit shape. It is also possible to do.
[0054]
Although the drainage part 16 can also be formed continuously over the entire length of the partition part 12, it is formed intermittently as in the partition material 10A shown in FIG. You may form the reinforcement part 18 which does not have. The width of the reinforcing portion 18 can be arbitrarily set, but if it is too wide, the opening area of the drainage hole 15 is reduced and the drainage performance is lowered, and if it is too narrow, a sufficient increase in strength cannot be expected. It is preferable to set to. Further, the reinforcing portion 18 is formed so as to correspond to the bending notch portion 17, and the strength reduction of the partition member 10 in the bending notch portion 17 is compensated, so that the partition member 10 is folded at the bending notch portion 17. You may prevent the handleability fall by bending.
[0055]
As shown in FIG. 2 to FIG. 6, a substantially U-shaped standing notch 20 is formed at a certain distance from the partition 12 in the middle of the fixing portion 11 in the length direction. 20 is formed with a bending guide portion 21a composed of a notch portion for bending guide extending inward along the fold line 21 and surrounded by the standing cut-out portion 20 and the fold line 21. A substantially trapezoidal positioning portion 22 is formed in the portion to be bent, and the positioning portion 22 is bent along the crease line 21 by being pushed with a finger from the lower side, and is substantially perpendicular to the upper side of the fixing portion 11. It is configured to stand up. In addition, although the positioning part 22 may stand up beforehand, since the partition material 10 cannot be piled up compactly, it is preferable to stand up as needed. Moreover, as the bending guide part 21a, you may form a fold, a perforation, etc. other than a notch part, and may form combining these.
[0056]
As shown in FIG. 2, when the partitioning material 10 is applied to the side edge of the thin-layer greening laminate 4, the positioning part 22 is provided with the fixing part 11 until the positioning part 22 comes into contact with the side edge of the drainage mat 5. By inserting the drainage mat 5 between the drainage mat 5 and the waterproof sheet 3, an outer peripheral drainage groove 9 having a constant width is easily formed between the drainage mat 5 and the partition portion 12. And by forming the outer periphery drainage groove 9 between the drainage mat 5 and the partition part 12 in this way, the drainage hole 15 is blocked by the drainage mat 5 and the deterioration of drainage performance in the partition material 10 is prevented. Become. In addition, it is preferable to provide such a positioning portion 22 because the displacement of the drainage mat 5 in the horizontal direction due to an earthquake or the like can be prevented.
[0057]
The positioning portion 22 can be formed in an arbitrary shape, and may be formed in a square shape other than the trapezoidal shape or a triangular shape. For example, as shown in the partition member 10B shown in FIG. 7, a substantially U-shaped standing notch 20B is formed instead of the standing notch 20 and a square positioning part 22B is substituted for the trapezoidal positioning part 22. 8 may be formed, or, as in the partition member 10C shown in FIG. 8, instead of the standing cutout portion 20, a standing cutout portion 20C extending from the side edge of the fixing portion 11 to the middle portion is formed. The rectangular or triangular positioning portion 22C may be formed so as to be able to stand up at the collar portion of the rising notch portion 20C. Further, as indicated by phantom lines in FIG. 2, an engaging portion 23 that can be bent toward the drainage mat 5 is integrally formed at the end of the positioning portion 22, and the engaging portion 23 is engaged with the drainage mat 5. In combination, the displacement of the end portion of the drainage mat 5 due to an earthquake or the like may be prevented with respect to the vertical direction or the horizontal direction. As the engaging portion 23, any shape such as a triangular shape or a sawtooth shape can be adopted as long as it can be inserted into the drainage mat 5. However, the positioning portions 22, 22B and 22C are not necessarily required and can be omitted.
[0058]
Next, a specific example of the partition member 10 will be described. As shown in FIG. 4, for example, a stainless steel plate having a thickness of 1 mm, a width of 150 mm, and a length L1 of 2000 mm is bent at a middle portion in the width direction. A fixing portion 11 having W1 of 80 mm and a partitioning portion 12 having a height H1 of 70 mm are formed, and an isosceles triangular notch 17 having a base length B of 80 mm is formed on the fixing portion 11 as a partitioning member 10. The drainage holes 15 having a diameter of 5 mm are formed in a staggered pattern in the lower part of the partitioning portion 12 at a height H2 from the lower end of the partitioning portion 12 within a range of 30 mm. The drainage portion 16 is formed over the entire length of the partition member 10, and a substantially U-shaped standing notch portion 20 having a height H3 of 20 mm is formed in the fixed portion 11 at a position where the distance L2 from the partition portion 12 is 25 mm. become.
[0059]
As shown in FIGS. 3 and 9, the connecting means 13 has a vertical wall portion 30 and a horizontal wall portion 31 that can be disposed along the partition portion 12 and the fixing portion 11 on the thin greening laminate 4 side. A substantially L-shaped connecting plate 32, and a bolt member 33 and a nut member 34 that fix the connecting plate 32 to the partition portion 12 are provided.
[0060]
Mounting holes 35 for the bolt members 33 are formed in the upper portions of both ends of the partition portion 12, and insertion holes 36 for the bolt members 33 are formed in the upper portions of both ends of the vertical wall portion 30 of the connecting plate 32 so as to correspond to the mounting holes 35. ing. The distance between the insertion holes 36 of the connecting plate 32 is set to be the same as the distance between the adjacent mounting holes 35 on the abutting side in a state where the adjacent partition members 10 are abutted, and the two partition members 10 are substantially spaced apart. So that they can be connected in series.
[0061]
The height of the vertical wall portion 30 is set higher than the height of the lower end of the folded portion 14 of the partition member 10, and the connecting plate 32 is firmly attached by fitting the upper end portion of the vertical wall portion 30 to the folded portion 14. It is assembled. A drainage hole 37 is formed in the lower part of the vertical wall portion 30 so as to correspond to the drainage hole 15 of the partition member 10, and the drainage holes 15 and 37 are communicated with each other with the connecting plate 32 assembled to the partitioning member 10. It is comprised so that the fall of the drainage property in the position which provided the connection board 32 can be prevented.
[0062]
A bending notch 38 is formed in the horizontal wall 31 corresponding to the bending notch 17 so that the partition member 10 can be bent at the connecting portion according to the outer edge shape of the thin greening laminate 4. It is configured.
[0063]
When the two partition members 10 are connected using the connecting means 13, the upper end portion of the vertical wall portion 30 is fitted into the folded portion 14 to partition the vertical wall portion 30 and the horizontal wall portion 31. The two bolt members 33 are connected to the two mounting holes 35 in a state in which the connecting plate 32 is positioned so that the partition portion 12 and the fixing portion 11 of the material 10 are in close contact with each other and the drain holes 15 and 37 are in communication with each other. By inserting each through the insertion hole 36 and fastening the nut member 34 to the bolt member 33, the two partition members 10 are connected in series.
[0064]
The drain hole 37 formed in the connecting plate 32 has a diameter slightly larger than that of the drain hole 15 formed in the partition member 10 so that the drain holes 15 and 37 can be easily communicated with each other. Also good. Further, instead of the bolt member 33 and the nut member 34, the connecting plate 32 and the partition member 10 may be connected via a fixing tool such as a rivet, or the fixing tool and an adhesive may be used in combination. The plate 32 may be connected to the partition member 10. Furthermore, the connecting plate 32 may be omitted, and at least the partition portions 12 of the adjacent partition members 10 may be overlapped, and the two partition members 10 may be connected at the overlapped portion with the fixing tool as described above.
[0065]
(Groove cover)
If the width of the drainage groove 8 is set wide, the vegetation mat 7 sinks into the drainage groove 8 due to secular change, and the groove cross-section becomes smaller and the water passage performance is lowered. 40 may be provided.
As shown in FIGS. 10 and 11, the groove lid 40 is a substantially elongated member having a substantially square cross section made of a synthetic resin material integrally formed by injection molding or the like, and is configured to be wider than the drainage groove 8 on both sides. The lid body 41 is provided on the upper side of the drainage mat 5 adjacent to each other, and a pair of position restricting portions 42 extending downward from the lid body 41 along the side edge of the adjacent drainage mat 5.
[0066]
The lid body 41 is formed in a flat plate shape, and support portions that are placed on the drainage mat 5 adjacent to each other and support the groove lid 40 are formed so as to protrude from the position restricting portion 42 to the side. Has been. It should be noted that drain through holes are formed in the lid main body 41 at regular intervals between the position restricting portions 42 so as to improve drainage from the vegetation mat 7 on the upper side of the lid main body 41 to the drain groove 8. May be.
[0067]
The position restricting portion 42 is formed in a plate shape extending in the vertical direction, and a plurality of drain holes 43 communicating the drain mat 5 and the drain grooves 8 are formed in the middle of the position restricting portion 42, for example, FIGS. It is formed in the arrangement | sequence as shown by. The drainage hole 43 can be formed in an arbitrary shape such as a round hole shape, a square hole shape, an elongated slit shape, a cross shape, a heart shape, a star shape, or a combination thereof. Moreover, you may arrange | position in zigzag form and may arrange | position in the matrix form of length and breadth. The vertical size of the position regulating portion 42 may be set to the same thickness as the drainage mat 5, but is set slightly smaller than the thinnest drainage mat 5 to be used and floated on both drainage mats 5. It is preferable that the groove lid 40 having the same configuration can be applied to the drainage mats 5 having different thicknesses. Instead of the plate-like position restricting portion 42, the rod-like member position restricting portion may be formed in a protruding shape at regular intervals in the length direction of the lid main body 41.
[0068]
In addition, as the groove cover 40, any structure can be adopted as long as the vegetation mat 7 can be prevented from sinking into the drain groove 8. For example, it may be configured to have a substantially U-shaped cross section with a plurality of drainage holes, and the groove lid may be mounted in the drainage groove 8 so that the opening faces downward. Moreover, you may comprise the whole in net shape, and may raise water permeability. Furthermore, a crosspiece may be arranged at regular intervals on the drainage mat 5 adjacent to the upper side of the drainage groove 8 to prevent the vegetation mat 7 from sinking into the drainage groove 8 on the upper side of the drainage groove 8. Furthermore, a groove lid may be provided on the upper side of the outer peripheral drainage groove 9 for the same purpose as the groove lid 40. However, when the vegetation mat 7 is light like the sedum and the groove width of the drainage groove 8 is relatively narrow, for example, when the groove width is 30 to 60 mm, the groove lid 40 is provided with the vegetation mat 7. It may be omitted because it hardly sinks in the area 8.
[0069]
(securing bracket)
Next, the fixture 50 for fixing the thin greening laminate 4 to the building part will be described.
As shown in FIG. 1 and FIG. 12 to FIG. 17, the fixing bracket 50 includes a base plate 51, a support column 52 made of a bolt member, and a lower end portion of the support column 52 for fixing the support column 52 to the base plate 51. A first nut member 53 that is screwed, an intermediate plate 54 that is movably mounted in the middle of the column 52, and a first screw member that is screwed to the middle of the column 52 in order to operate the intermediate plate 54 downward. A two-nut member 55, a top plate 56 that is detachably attached to the end of the column 52, and a cap nut 57 that is screwed into the end of the column 52 are provided. Reference numeral 58 denotes a washer attached to the support column 52.
[0070]
The fixing metal 50 attaches the base plate 51 to an adhesive or the like on the waterproof sheet 3 at the intersection of the drainage grooves 8 and on the fixing part 11 of the partition member 10 at the intersection of the drainage grooves 8 and the outer peripheral drainage grooves 9. Fixed with double-sided tape. Then, by sandwiching the four corners of the adjacent drainage mat 5 between the base plate 51 and the intermediate plate 54 of the fixture 50, the drainage mat 5 is fixed to the building 2 and the adjacent drainage mats 5 are connected. Further, a root shielding sheet 6 is laid on the drainage mat 5, and the four green corners of the vegetation mat 7 placed thereon are pressed down by the top plate 56 so that the thin greening laminate 4 is fixed to the building 2. It is configured. However, when two or more drainage mats 5 are arranged adjacent to each other under one vegetation mat 7, a short column is used as a fixture for connecting the plurality of drainage mats 5. While being used, the top plate 56 is omitted, and the drainage mat 5 is sandwiched between the base plate 51 and the intermediate plate 54, but the vegetation mat 7 may be configured not to be pressed by the top plate 56. Further, the root shielding sheet 6 may be disposed below the intermediate plate 54.
[0071]
The base plate 51, the intermediate plate 54, and the top plate 56 are manufactured by press-molding a metal plate such as a flat stainless steel plate or an iron plate. When using a metal plate having excellent corrosion resistance such as a stainless steel plate. Although it can be used as it is after being press-molded, when it is made of a material that is easily rusted, such as an iron plate, it is subjected to a rust prevention treatment after press working.
[0072]
Insertion holes 51a through which the support columns 52 are inserted are formed at the center of the base plate 51, and engagement claws 51b inserted into the drainage mat 5 are bent upward at the four corners of the base plate 51. In the vicinity of the four corners of the base plate 51, a pair of trapezoidal positioning portions 51c for positioning the corners of the drainage mat 5 are formed by cutting and raising, respectively. In a state where the side is in contact with the side surface of the positioning portion 51c and positioned, the corner portion is pierced into the engaging claw 51b and is positioned and engaged with the base plate 51. The engaging claw 51b is formed in the shape of an arrow by cutting off both ends of the base portion, and is configured so that the engaging claw 51b is difficult to be removed when stabbed into the drainage mat 5.
[0073]
Insertion holes 54a through which the support columns 52 are inserted are formed at the center of the intermediate plate 54, and first engagement claws 54b inserted into the drainage mat 5 are bent downward at the four corners of the intermediate plate 54 at the four corners of the intermediate plate 54. The second engaging claw 54c is formed by cutting and raising in the vicinity of the four corners of the intermediate plate 54. The intermediate plate 54 has the first engaging claw 54b and the second engaging claw 54c attached to the drainage mat 5. It is pierced and engaged with the drainage mat 5. Similarly to the engagement claw 51b formed on the base plate 51, the first engagement claw 54b is also formed in an arrow shape by notching both ends of the base.
[0074]
The top plate 56 is formed in a substantially cross shape in order to reduce the area as much as possible while holding down the four adjacent vegetation mats 7 so as not to inhibit the growth of planting. An insertion hole 56a through which the support column 52 is inserted is formed at the center of the top plate 56, and an engagement claw 56c that extends downward and is inserted into the vegetation mat 7 is formed by cutting and raising the four arm portions 56b of the top plate 56. The top plate 56 is engaged with the vegetation mat 7 by inserting the engaging claws 56 c into the vegetation mat 7.
[0075]
As the fixing metal fitting 50, it is possible to adopt any structure as long as the thin greening laminate 4 can be firmly fixed to the waterproof sheet 3. It is also possible to employ a well-known fixing bracket in which the intermediate plate 54 of the fixing bracket 50 is omitted. Further, the fixing bracket 50 can also be applied to a thin-layer rooftop greening facility that does not have the drainage grooves 8 and the outer peripheral drainage grooves 9.
[0076]
Next, the construction method of the thin-layer rooftop greening facility 1 will be described.
First, the waterproof sheet 3 is laid and fixed on the roof slab or the roof, and the support 52 is inserted into the insertion hole 51a of the base plate 51, and the first nut member 53 is screwed into the support 52, and the support plate is attached to the base plate 51. 52 is fixed upright.
[0077]
Next, as shown in FIG. 1 and FIG. 12, on the waterproof sheet 3 corresponding to the intersecting portion of the drainage grooves 8, the base plate 51 in which the columns 52 are erected is sequentially fixed with an adhesive or a double-sided tape, The partition material 10 is bent along the outer edge of the thin rooftop greening facility 1, and the fixing portion 11 of the partition portion 10 is sequentially fixed on the waterproof sheet 3 with an adhesive or double-sided tape, and the adjacent partition material 10 is further fixed. While being connected by the connecting plate 32, the base plate 51 in which the support column 52 is erected on the fixing portion 11 at the intersection of the drainage groove 8 and the outer peripheral drainage groove 9 is sequentially fixed with an adhesive or a double-sided tape.
[0078]
Next, as shown in FIGS. 2 and 12, the drainage mats 5 at the center of the thin rooftop greening facility 1 are formed at the four corners so that drainage grooves 8 having a predetermined width are formed between the drainage mats 5. The base plate 51 is placed in contact with the side surface of the positioning portion 51 c while being positioned by the base plate 51, and the outer peripheral drainage groove 9 having a predetermined width is formed between the partition portion 10 and the drainage mat 5. Regarding the drainage mat 5 at the outer edge of the layered rooftop greening facility 1, the four corners are installed while being positioned by the positioning portion 51 c of the base plate 51 and the positioning portion 22 of the partition member 10. Since the drainage mat 5 can be installed while being positioned by the base plate 51 and the partition member 10 in this way, the drainage groove having the required width between the drainage mats 5 can be obtained by constructing the base plate 51 and the partition member 10 at appropriate positions in advance. 8, the drainage mat 5 can be easily constructed so that the outer peripheral drainage groove 9 having the required width is formed between the drainage mat 5 and the partitioning portion 11.
[0079]
Next, the groove lid 40 is attached so that the drainage groove 8 is closed, the intermediate plate 54 is attached to the column 52 protruding upward from the drainage mat 5, and the second nut member 55 is fastened to the column 52. Then, the drain mat 5 is sandwiched between the base plate 51 and the intermediate plate 54. In this state, the engaging claw 51b of the base plate 51 and the first engaging claw 54b and the second engaging claw 54c of the intermediate plate 54 are engaged with the drainage mat 5, and the adjacent drainage mats 5 are connected. Peeling of the vegetation mat 7 due to wind or the like is effectively prevented, and pulling of the drainage mat 5 is effectively prevented. However, when the vegetation mat 7 is not pressed by the fixing bracket 50, the support 52 is configured to be short, and after the root shielding sheet 6 is laid, the intermediate plate 54 is attached to the support that protrudes upward from the root shielding sheet 6. Then, the second nut member 55 is fastened to the support column, and the drainage mat 5 is sandwiched between the base plate 51 and the intermediate plate 54.
[0080]
Next, after laying the root shielding sheet 6 over the plurality of drainage mats 5, the vegetation mat 7 is set on the root shielding sheet 6 so that the pillars 52 are positioned at the four corners. Is attached to the support column 52, the cap nut 57 is screwed onto the upper end of the support column 52, and the corners of the four adjacent vegetation mats 7 are pressed by the top plate 56 to construct the thin-layer rooftop greening facility 1. It will be.
[0081]
Thus, in this thin-layer rooftop greening facility 1, the fixing bracket 50 is fixed on the waterproof sheet 3 at the intersection of the drainage grooves 8 and on the fixing portion 11 at the intersection of the drainage grooves 8 and the outer peripheral drainage groove 9. Since the base plate 51 and the intermediate plate 54 of the fixing metal fitting 50 sandwich the four corners of the adjacent drainage mats 5, all the drainage mats 5 to be laid are integrally connected, and the vegetation mat 7 is fixed thereto. It becomes possible to firmly fix the vegetation mat 7 and the drainage mat 5 to the building 2, and the horizontal movement of the vegetation mat 7 and the drainage mat 5 due to detachment of the vegetation mat 7 and the drainage mat 5 due to strong wind or an earthquake is effective. Can be prevented.
[0082]
In addition, although the present Example demonstrated the case where the vegetation mat 7 was laid flat, as shown in FIG. 18, when the vegetation mat 7 is arrange | positioned in a mountain shape and a mountain is formed in the thin-layer rooftop greening equipment 1 In the same manner as described above, after fixing the base plate 51 with the support column 52 upright and fixed at a predetermined position of the waterproof sheet 3, the drain mat 5 and the root shield sheet 6 are sequentially arranged on the waterproof sheet 3 to block the waterproof sheet. A three-dimensional network structure made of polyethylene and a block-like raising material 60 made of a foamed molded body such as polyethylene or polypropylene are placed on the root sheet 6 and a filler 61 made of a fiber material is loaded thereon, and The vegetation mat 7 is installed after laying the second root shielding sheet 62 thereon. Further, the vegetation mat 7 is fixed to the building 2 by using a long column instead of the column 52 in the fixture 50, or by connecting a screw rod 63 to the column 52 with a coupling nut 64. The top plate 56 is attached to the upper end of the column extended to the top, the packing 65 is further attached, and then the cap nut 57 is fastened to dispose the top plate 56 in an inclined manner along the vegetation mat 7. The vegetation mat 7 is fixed by 56. As the packing 65, an elastic packing made of a synthetic rubber or a coil spring that can be deformed according to the inclination of the top plate 56, a packing made of a rigid body having an inclined surface corresponding to the inclination, or the like can be used.
[0083]
【The invention's effect】
  According to the thin-layer rooftop greening facility according to the present invention, it is possible to smoothly discharge rainwater outside the thin-layer rooftop greening facility with a simple configuration in which drainage grooves are formed between adjacent drain mats. It prevents stagnation of rainwater in the vicinity of the outer edge of the layered rooftop greening facility and in the center, and effectively prevents the soil from being washed away and moved due to the rise in the water level of the rainwater, and disappearance due to wind.
  As a drainage mat, it consists of a core material and a surface material, and the surface material is heat-sealed to the core material, and both are integrated, so that the vegetation mat can be received with a fine mesh surface material, The vegetation mat can be prevented from sinking into the drainage mat, and the drainage performance of the drainage mat can be prevented from being lowered, and the surface material can be thermally fused to the core material to prevent the core material from collapsing and Strength can be improved easily.
[0084]
Here, when the width of the drainage groove is set to 30 to 100 mm, it is possible to prevent the vegetation mat from sinking into the drainage groove without separately providing a reinforcing material while ensuring sufficient water passage performance.
[0085]
When the depth of the drainage groove is set to 20 to 50 mm, an increase in production cost due to the drainage mat becoming thick can be suppressed while sufficiently ensuring the water passing performance.
[0086]
(Groove lid)
Installing a groove lid that closes the upper surface of the drainage groove to prevent the vegetation mat from sinking into the drainage groove will increase the equipment cost slightly, but the vegetation mat will sink into the drainage groove and the groove cross section will decrease. This makes it possible to maintain the desired water flow performance over a long period of time. Moreover, since the space | interval of a drainage mat is set uniformly by the position control part, the water flow performance of a groove | channel improves and it can prevent the fluctuation | variation of the groove width of a drainage groove | channel by an earthquake etc.
[0087]
If the position restriction part of the groove lid is formed in a plate shape and a plurality of drainage holes communicating with the drain mat and the drainage groove are formed in the position restriction part, the position restriction part is secured while sufficiently securing the strength of the position restriction part. By providing, it is possible to improve the water passage performance of the groove.
[0088]
(Drain mat)
The area of the upper surface of the drainage mat is 2500-40000 cm²If the maximum drainage distance from the centroid of the drainage mat to the outer edge is set to 25 to 100 cm, the number of fasteners is suppressed, and the rise in production costs and the complexity of construction work are suppressed, while the drainage mat Sufficient rainwater drainage can be secured in the center.
[0089]
Long-term pressure strength of 10% deformation when drainage mat is wet 180-900kg / m²When set to, the product can satisfy the load limit depending on the type of building, and the quality can be guaranteed even for long-term use. Increasing the pressure strength beyond that will ensure the guarantee, but the economy tends to be inferior.
[0091]
(securing bracket)
As a fixing bracket, a base plate, a support column, an intermediate plate, and a top plate are provided. A base plate is installed on the lower side of the adjacent drainage mat, and an intermediate plate is installed on the upper side of the adjacent drainage mat. Arrangement and fixing brackets that integrate these three plates with columns can connect all drainage mats to be laid together and fix vegetation mats to them, so vegetation mats and drainage mats for buildings The mounting strength can be significantly improved.
[0092]
A fixing metal column is constituted by a bolt member, a first nut member for fixing the base member to the column, a second nut member for sandwiching a drainage mat between the base plate and the intermediate plate, the intermediate plate and the top When a cap nut for sandwiching the vegetation mat between the plates is provided, the fixing bracket can be made of a general-purpose product, and the vegetation mat can be prevented from being peeled off by strong winds while reducing the production cost as much as possible. Moreover, the safety | security of the movement at the time of a maintenance inspection etc. can be improved by screwing a cap nut with the front-end | tip part of a support | pillar.
[0093]
If the engaging claw that engages the drainage mat is integrally formed on the base plate and the intermediate plate, and the engaging claw that engages the vegetation mat is integrally formed on the top plate, the connection strength between the adjacent drainage mats is further increased. In addition to improving the engagement strength between the top plate and the vegetation mat, it is possible to more effectively prevent the vegetation mat from being peeled off by a strong wind or the like.
[0094]
When a positioning part that contacts the side edge of the drainage mat and positions the side edge position of the drainage mat is formed integrally with the base plate, the side edge comes into contact with the positioning part of the base plate fixed at the appropriate position of the building. By installing the drainage mat, the drainage mat can be easily installed at an appropriate position, and the workability of the drainage mat construction work can be greatly improved.
[0095]
(Partition material)
At the side edge of the thin rooftop greening facility, there is a drainage part that has a fixed part and a partitioning part, and has a plurality of drainage holes formed in the shape of a punched wire net over the entire length of the lower part of the partitioning part. When the partition member is provided, the total opening area of the drain holes can be sufficiently secured, and the drain holes can be distributed substantially uniformly over the entire length of the partition member. For this reason, it becomes possible to perform the drainage from the thin-layer greening laminate to the outside smoothly and uniformly over the entire length of the partition material, and the partial rainwater of the thin-layer rooftop greening equipment resulting from the poor drainage of the partition material. Can be prevented, and the overflow of the rainwater in the partition material can be prevented, so that the soil can be effectively prevented from being washed away or moved by the rainwater and lost by the wind.
[0096]
If the drainage part is formed only below the position facing the root shield sheet laminated on the thin greening laminate, the roots of the vegetation such as sedum are prevented from extending from the drainage holes to the outside. The appearance of the thin rooftop greening facility can be prevented from deteriorating.
[0097]
Total opening area of drainage holes per unit length of the partition is 12000-30000mm²When it is set to / m, the thickness of the partition member can be ensured sufficiently, and the wall thickness thereof can be made as thin as possible to suppress an increase in the manufacturing cost of the partition member, and sufficient drainage performance can be ensured.
[0098]
If a partition material is provided so that an outer peripheral drainage groove connected to the drainage groove is formed between the partitioning part and the drainage mat, variations in the amount of rainwater supplied from the drainage mat to the partitioning part at each part in the lengthwise direction of the partitioning part are reduced. The drainage from the thin greening laminate to the outside can be performed more uniformly over the entire length of the partition material by smoothing in the outer edge drainage groove, and the drainage performance of the partition material can be further improved.
[0099]
In addition, when the positioning portion is formed in the fixing portion, when the thin-layer greening laminate is constructed along the partition material, the partition material is constructed by bringing the side edge of the drainage mat into contact with the positioning portion, It becomes possible to easily form a drainage groove having a constant width between the side portion and the side edge of the drainage mat. The positioning portion may be raised in advance, but if it is configured to be raised at the time of construction, the partition material can be arranged in a compact manner, which is preferable in terms of improving transportability and storability. Furthermore, it is preferable to provide such a positioning portion because the displacement of the drainage mat in the horizontal direction due to an earthquake or the like can be prevented.
[Brief description of the drawings]
FIG. 1 is a plan view of a thin-layer rooftop greening facility with a vegetation mat and a root shielding sheet removed.
FIG. 2 is a vertical cross-sectional view taken along the line II-II of FIG. 1 with a vegetation mat and a root shielding sheet provided.
FIG. 3 is an exploded perspective view of a connecting portion of a partition member
4A is a plan view of a partition material, and FIG. 4B is a front view of the partition material.
FIG. 5 is a plan view of the main part near the positioning part of the partition material.
6A is a plan view of a partition member according to another embodiment, and FIG. 6B is a front view thereof.
FIG. 7 is a plan view of the vicinity of a positioning portion of a partition member according to another embodiment.
FIG. 8 is a plan view of the vicinity of a positioning portion of a partition member according to another embodiment.
FIG. 9 is a view corresponding to FIG. 1 at a connecting portion of adjacent partition members.
FIG. 10 is a vertical sectional view taken along line XX in FIG. 1 with a vegetation mat and a root shielding sheet provided.
FIGS. 11A, 11B, and 11C are side views of groove lids in which the layout of drain holes is changed.
12 is a vertical cross-sectional view taken along line XII-XII in FIG. 1 with a vegetation mat and a root shielding sheet provided.
FIG. 13 is a longitudinal sectional view of a fixing bracket
FIG. 14 is an exploded perspective view of a fixing bracket.
FIG. 15 is a plan view of a base plate
FIG. 16 is a plan view of an intermediate plate
FIG. 17 is a plan view of a top plate.
FIG. 18 is a cross-sectional view of a thin-layer rooftop greening facility when a rock is formed
FIG. 19 is an explanatory diagram of a drainage method in a conventional thin-layer rooftop greening facility.
[Explanation of symbols]
1 Thin-layer rooftop greening facility 2 Building
3 Tarpaulin 4 Thin greening laminate
5 Drainage mat 6 Root shielding sheet
7 Vegetation mat 8 Perimeter drainage groove
9 Outer drainage groove
10 Partition material 11 Fixed part
12 partitions 13 connecting means
14 Turn-up part 15 Drain hole
16 Drainage part 17 Notch for bending
18 Reinforcement 20 Standing notch
21 Folding line 21a Folding guide
22 Positioning part 23 Engaging part
10A partition material
10B Partition material 20B Notch for standing
22B Positioning part
10C Partition material 20C Notch for standing
22C Positioning part
30 Vertical wall 31 Horizontal wall
32 Connecting plate 33 Bolt member
34 Nut member 35 Mounting hole
36 Insertion hole 37 Drainage hole
38 Notch for bending
40 groove lid 41 lid body
42 Position restriction part 43 Drain hole
50 Fixing bracket 51 Base plate
51a insertion hole 51b engagement claw
51c Positioning part 52 Prop
53 First nut member 54 Intermediate plate
54a insertion hole 54b first engaging claw
54c Second engaging claw 55 Second nut member
56 Top plate 56a Insertion hole
56b Arm part 56c Engagement claw
57 Cap nut 58 Washer
60 Raising material 61 Filling material
62 Shield sheet 63 Screw rod
64 Connecting nut 65 Packing

Claims (17)

A plurality of drainage mats made of a three-dimensional network structure installed on the roof of a building, a core material made of a synthetic resin fiber material for imparting pressure resistance, and a mesh-like composition with a finer mesh than the core material A drainage mat made of a resin fiber material, having a surface material that covers the upper and lower surfaces and both left and right sides of the core material, and the surface material is heat-sealed to the core material to integrate them. A thin rooftop comprising a plurality of drainage mats and a vegetation mat installed above the drainage mats, wherein the drainage mats are spaced apart from each other and drainage grooves are formed between adjacent drainage mats. Greening equipment.   The thin-layer rooftop greening facility according to claim 1, wherein a width of the drainage groove is set to 30 to 100 mm.   The thin-layer rooftop greening facility according to claim 1 or 2, wherein a depth of the drainage groove is set to 20 to 50 mm. A groove lid that closes the upper surface of the drainage groove to prevent the vegetation mat from sinking into the drainage groove, is configured to be wider than the drainage groove and is installed on the upper side of the adjacent drainage mat. a lid body, a thin layer of any one of claims 1 to 3 in which a groove cover that having a position regulating portion of the pair extending downward from the lid body along a side edge of the drainage mat adjacent Rooftop greening facility.   The thin-layer rooftop greening facility according to claim 4, wherein a position restricting portion of the groove lid is formed in a plate shape, and a plurality of drain holes for communicating the drain mat and the drain groove are formed in the position restricting portion. Thin layer green roof equipment according to any one of claims 1 to 5 to set the area of the upper surface of the drainage mat 2500~40000cm ^2.   The thin-layer rooftop greening facility according to any one of claims 1 to 6, wherein a maximum drainage distance from the centroid of the drainage mat to the outer edge is set to 25 to 100 cm. Thin layer green roof equipment according to any one of claims 1 to 7 to set the deformation amount 10% of the pressure resistance in the wet state of the drainage mat 180~900kg / m ^2. Fixing brackets for fixing the drainage mat and the vegetation mat to a building, including a base plate, a support column that is erected and fixed to the base plate, an intermediate plate that is movably mounted in the middle of the support column, and an end of the support column A top plate removably fixed to the section, a base plate is installed on the lower side of the adjacent drainage mat, an intermediate plate is installed on the upper side, and the top plate is arranged on the upper side of the vegetation mat. The thin-layer rooftop greening facility according to any one of claims 1 to 8 , wherein a fixing bracket is formed by integrating a single plate with a support. The fixing metal column is constituted by a bolt member, a first nut member for fixing the base member to the column, a second nut member for sandwiching the drainage mat between the base plate and the intermediate plate, and a top plate. The thin-layer rooftop greening facility according to claim 9 , further comprising a cap nut for pressing against the vegetation mat. Said base plate and integrally formed engagement claws that engages the drainage mat intermediate plate, a thin integrally formed claims 9 or 1 0, wherein the engaging claws engage the vegetation mat on the top plate Layered rooftop greening equipment. The thin-layer rooftop greening facility according to any one of claims 9 to 11, wherein a positioning portion that contacts the side edge of the drainage mat and positions the side end position of the drainage mat is integrally formed on the base plate. A partition material disposed along a side edge of the thin-layer greening laminate including the drainage mat and the vegetation mat, the fixing portion disposed below the drainage mat, and an outer surface of the thin-layer greening laminate And a partition member formed by providing a drainage part formed by punching a plurality of drainage holes into a substantially lower part of the partitioning part over the substantially entire length of the partitioning part. The thin-layer rooftop greening facility according to any one of claims 1 to 12 . Thin layer green roof equipment of the drainage portion claims 1 3, wherein formed only on the lower side than the position facing the Saegine sheet to be laminated on the thin layer greening laminate. Thin layer green roof equipment total opening area of the drain hole of the 12000~30000mm ² / m claim 1 3 or 1 4, wherein the set per unit length of the partition portion. The partition portion with claim 1 3 to 1 5 thin layer green roof equipment according to any one of provided with a partition member as the outer peripheral drainage grooves communicating with the drainage ditch between the drainage mat is formed. A positioning part for positioning the side end position of the drainage mat on the fixing part is formed at a position spaced apart from the partition part by a certain distance, and the side edge of the drainage mat is brought into contact with the positioning part to make the thin layer greening lamination The thin-layer rooftop greening facility according to claim 16, wherein an outer edge drainage groove having a constant width is formed between the drainage mat and the partition by installing the body.

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