JP7330082B2 - Construction method of equipment foundation - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for constructing a facility foundation installed on the roof of a building.

On the roof of a building (for example, an apartment house), a facility foundation is provided for installing equipment such as various water tanks, lightning rods, various antennas, various pipes, and photovoltaic panels. The equipment is installed on the roof surface so as to rise upward from the upper surface of the roof (hereinafter also referred to as the roof surface). The facility foundation is formed by pouring concrete into a formwork attached to the roof surface (for example, Patent Documents 1 and 2).

If the roof surface is inclined with respect to the horizontal surface (hereinafter also referred to as an inclined roof surface) in order to drain rainwater, conventionally, the above-mentioned formwork is placed horizontally on the inclined roof surface. Adjusting the posture of the formwork. As a result, even if the slanted roof surface is slanted from the horizontal plane, each part of the facility foundation becomes horizontal.

For example, in Patent Literature 1, a foundation pipe, which is the formwork, and a reinforced concrete frame forming a sloped roof are connected via a plurality of adjustment bolts. The lower end of each adjustment bolt is screwed into a bolt hole formed in the reinforced concrete frame. The inclination of the foundation pipe to the reinforced concrete frame is adjusted by adjusting each adjustment bolt. As a result, even if the upper surface (inclined roof surface) of the reinforced concrete frame is inclined, the base pipe can be installed horizontally.

JP 2016-132917 A JP 2018-165436 A

However, in Patent Document 1, in order to adjust the inclination of the formwork, it is necessary to arrange a plurality of adjustment bolts between the inclined roof surface and the main body. Therefore, in Patent Document 1, it is necessary to form a bolt hole in the reinforced concrete frame into which the lower end of the adjustment bolt is screwed, and to provide a mechanism (such as a nut) that connects the upper end of the bolt to the formwork so that the height can be adjusted. be. Therefore, it is desirable to reduce the effort required to horizontally adjust the first formwork.

Patent Document 2 describes a facility foundation to be installed on the roof of a building, but discloses a means for horizontally adjusting the formwork for the facility foundation when the roof surface is inclined. not

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to make it possible to reduce the labor required to horizontally adjust the formwork for the facility foundation when constructing the facility foundation on an inclined roof surface.

The present invention is a method for constructing a facility foundation that rises upward from the inclined roof surface in a building having an inclined roof surface that is inclined from the horizontal plane,
(A) fixing a partitioning member to the inclined roof surface so as to partition an installation area for installing the first formwork on the inclined roof surface;
(B) By placing the first formwork in the installation area and inserting a height adjustment member between the inclined roof surface and a part of the lower end surface of the first formwork, the first formwork is installed. Adjust the posture of the horizontally,
(C) Concrete is placed in the internal space of the first formwork.

According to the present invention, when the first formwork is installed on the inclined roof surface, the first formwork can be horizontally adjusted simply by inserting the height adjusting member between the first formwork and the inclined roof surface. , the labor for adjusting the first formwork horizontally can be reduced.

Moreover, the first formwork can be horizontally adjusted while the first formwork is surrounded by the partition members. Therefore, the first formwork can be horizontally adjusted while the first formwork is positioned by the partition member.

Therefore, the attitude adjustment and positioning of the first mold can be easily performed.

It is a figure which shows the structural example of the facility foundation by embodiment of this invention. FIG. 2 is a view taken along line II-II in FIG. 1; 4 is a flow chart illustrating a method for constructing a facility foundation according to an embodiment of the invention; It is an explanatory view of the construction method of the facility foundation according to the embodiment of the present invention. It is another explanatory view of the construction method of the facility foundation according to the embodiment of the present invention. It is another explanatory view of the construction method of the facility foundation according to the embodiment of the present invention. It is another explanatory view of the construction method of the facility foundation according to the embodiment of the present invention. It is another explanatory view of the construction method of the facility foundation according to the embodiment of the present invention. It is another explanatory view of the construction method of the facility foundation according to the embodiment of the present invention. It is another explanatory view of the construction method of the facility foundation according to the embodiment of the present invention. It is another explanatory view of the construction method of the facility foundation according to the embodiment of the present invention. It is another explanatory view of the construction method of the facility foundation according to the embodiment of the present invention.

An embodiment of the present invention will be described based on the drawings. In addition, the same code|symbol is attached|subjected to the part which is common in each figure, and the overlapping description is abbreviate|omitted.

(Composition of equipment foundation)
FIG. 1 is a diagram showing a configuration example of a facility foundation 10 according to an embodiment of the present invention, and is a cross-sectional view along a vertical plane. FIG. 2 is a view taken along line II-II in FIG. FIG. 1 is a cross-sectional view taken along line AA of FIG.

The facility foundation 10 is installed on the upper surface 1a of the roof of a building (for example, an apartment complex). This upper surface 1a may be flat. Also, this upper surface 1a may be the upper surface of a concrete slab 1 formed on the roof of a building. In the present embodiment, the upper surface 1a of the roof is a surface inclined with respect to the horizontal plane (hereinafter referred to as an inclined roof surface) in order to allow rainwater to flow. The water gradient of the inclined roof surface 1a may be, for example, a gradient within the range of 1/50 to 1/100. That is, the water gradient θ of the inclined roof surface 1a with respect to the horizontal plane may be an angle within the range of arctan 1/50 to arctan 1/100. In addition, in FIG. 1, the water gradient of the inclined roof surface 1a is emphasized.

The facility foundation 10 is constructed so as to rise upward from the inclined roof surface 1a. Equipment is installed on the upper surface 10 a of the equipment foundation 10 . The equipment includes various water tanks (for example, water tanks for firefighting), lightning rods, various antennas (for example, television antennas), various pipes, and photovoltaic panels.

The facility foundation 10 includes a first formwork 3, concrete 9, and a waterproof sheet 11. - 特許庁

The first formwork 3 is installed on the inclined roof surface 1a. The 1st formwork 3 has the main-body part 5 and the draining part 7 in this embodiment.

The body portion 5 surrounds the inner space of the first formwork 3 and rises upward from the inclined roof surface 1a. The body portion 5 has an outer peripheral surface 5a that extends in a circumferential direction around the central axis C of the first formwork 3 and makes one round. The outer peripheral surface 5a is preferably polygonal (rectangular in FIG. 2) when viewed in a direction parallel to the central axis C, but may be of another shape (for example, circular).

The lower end surface 3a of the body portion 5 may be formed entirely flat. In this case, the outer peripheral surface 5a of the body portion 5 may be formed perpendicular to the lower end surface 3a.

The draining portion 7 extends from the upper end portion of the main body portion 5 outward away from the central axis C (for example, in a direction orthogonal to the central axis C). In addition, the draining portion 7 extends in the circumferential direction around the central axis C and makes one turn. The outer peripheral surface 7a of the draining portion 7 is preferably polygonal (rectangular in FIG. 2) when viewed in a direction parallel to the central axis C, but may be of another shape (for example, circular).

A groove 7 b recessed upward is formed on the lower surface of the draining portion 7 . The groove 7b extends in the circumferential direction and makes one round. The groove 7 b has a function of preventing rainwater from the outer peripheral surface 7 a from flowing along the lower surface of the draining portion 7 to the main body portion 5 .

The height of the body portion 5 may be constant regardless of the position in the circumferential direction. Moreover, the height of the draining portion 7 with respect to the lower surface of the water body portion 5 is constant regardless of the position in the circumferential direction.

In the constructed facility foundation 10, the posture of the first formwork 3 is horizontal. That is, in this state, the central axis C faces vertically. Moreover, regardless of the position in the circumferential direction around the central axis C, the height of the draining portion 7 with respect to the planar lower end surface 3a (the position in the direction of the central axis C) may be constant.

In one example, the first formwork 3 may be made of glass fiber reinforced cement, but may be made of other materials. The body portion 5 and the draining portion 7 may be formed integrally with each other, or the first mold 3 is formed by combining the body portion 5 and the draining portion 7, which are separate members. good too.

Concrete 9 includes a first concrete portion 9 a formed in the inner space of first formwork 3 . The upper surface of the concrete 9 is a horizontal surface as the upper surface 10a of the facility foundation 10. As shown in FIG.

In this embodiment, the concrete 9 further includes a second concrete portion 9b. The second concrete portion 9b is formed integrally with the first concrete portion 9a above the first concrete portion 9a and the water draining portion 7 . The second concrete portion 9b has an outer peripheral surface 9b1 and an upper surface 10a. The outer peripheral surface 9b1 may be a vertical surface. A reinforcing bar 4 is provided inside the concrete 9 .

A waterproof sheet 12 is provided in an area where the facility foundation 10 does not exist on the inclined roof surface 1a. In the example of FIG. 1, a heat insulating material 15 is provided in an area where the facility foundation 10 does not exist on the inclined roof surface 1a, and a waterproof sheet 12 is provided on the heat insulating material 15. As shown in FIG. The heat insulating material 15 may be a heat insulating plate.

The waterproof sheet 11 is provided so as to cover the outer peripheral surface 5 a of the body portion 5 . In the example of FIG. 1, an upper PVC steel plate 17 and a lower PVC steel plate 18 are provided to attach the waterproof sheet 11 to the outer peripheral surface 5a. Each of the upper PVC steel plate 17 and the lower PVC steel plate 18 is obtained by coating the outer surface of the steel plate with a polyvinyl chloride resin.

The upper PVC steel plate 17 is fixed to the upper portion by anchors 21 so as to cover the outer peripheral surface 5a of the upper portion of the body portion 5, and the lower PVC steel plate 18 is the outer peripheral surface of the lower portion of the main body portion 5. It is fixed to the inclined roof surface 1a by the anchor 22 so that it may surround 5a. Each of the upper PVC steel plate 17 and the lower PVC steel plate 18 may have an L-shaped cross section as shown in FIG. The upper end of the waterproof sheet 11 is joined to the upper PVC steel plate 17 by welding or adhesive, and the lower end of the waterproof sheet 11 is joined to the lower PVC steel plate 18 by welding or adhesive. Also, the waterproof sheet 12 is joined to the lower end of the waterproof sheet 11 by welding or adhesive.

(Construction method of equipment foundation)
FIG. 3 is a flow chart illustrating a method for constructing the facility foundation 10 according to an embodiment of the invention. 4 to 12 are explanatory diagrams showing a construction method of the facility foundation 10 according to the embodiment of the present invention. The construction method according to this embodiment has steps S1 to S8.

FIG. 4 is a horizontal cross-sectional view taken along line IV-IV of FIG. 5 is a view taken along line VV in FIG. 4. FIG.

In step S1, for example, as shown in FIGS. 4 and 5, the partitioning member 31 is installed so as to partition the installation region R (the region surrounded by the dashed line in FIG. 5) of the first formwork 3 on the inclined roof surface 1a. It is fixed to the inclined roof surface 1a. In this state, the side surface of the partition member 31 on the installation area R side is located at the outer peripheral edge of the installation area R. As shown in FIG. In the example of FIG. 5, the installation area R is rectangular when viewed from a direction perpendicular to the inclined roof surface 1a. 4 and 5, a plurality of fixing members 35 may be fixed to the inclined roof surface 1a on the outer periphery of the partitioning member 31. FIG.

The partition member 31 and the fixing member 35 may be crosspieces, for example, but are not limited to this. The partition member 31 and the fixing member 35 may be fixed to the inclined roof surface 1a with concrete nails (not shown).

In addition, as shown in FIGS. 4 and 5, the installation region R may be provided with reinforcing bars 4 extending from the concrete slab 1 in advance.

In step S2, the first formwork 3 is arranged on the inclined roof surface 1a in the installation area as shown in FIG. 6 viewed in the horizontal direction, for example. At this time, the first formwork 3 can be positioned in the installation area R only by placing the first formwork 3 on the inclined roof surface 1 a inside the partition member 31 .

In step S3, for example, as shown in FIG. 7, one or more height adjusting members 33 are inserted between the inclined roof surface 1a and a part of the lower end surface 3a of the first mold 3 to The posture of the first formwork 3 is adjusted so that the posture of the frame 3 is horizontal (that is, the central axis C is oriented vertically). FIG. 7 is a horizontal cross-sectional view taken along the line VII--VII of FIG. 8 is a view taken along line VIII-VIII in FIG. 7. FIG. The height adjustment member 33 may have a wedge shape. The height adjustment member 33 may be a small piece of plywood. Note that step S2 and step S3 may be performed at the same time.

In step S4, for example, as shown in FIG. FIG. 9 is a cross-sectional view viewed in the horizontal direction, and is a cross-sectional view taken along line IX-IX of FIG. 10 is a view taken along line XX of FIG. 9. FIG.

The second formwork 19 fixed to the first formwork 3 is supported on the inclined roof surface 1a directly or via another member (fixing member 35 in the example of FIG. 9). As a result, the first formwork 3 is placed on the sloped roof surface 1a via the second formwork 19 while the posture of the first formwork 3 (lower end surface 3a of the first formwork 3) is kept horizontal. Supported. The second formwork 19 fixed to the first formwork 3 is in close contact with the outer peripheral surface 7a of the draining section 7 and extends to a position above the draining section 7 . In this state, the internal space of the first mold 3 and the internal space of the second mold 19 communicate with each other.

In the example of FIG. 10, the outer peripheral surface 7a of the draining portion 7 is rectangular when viewed from the vertical direction (the direction of the central axis C). That is, the outer peripheral surface 7a of the draining portion 7 consists of four planes corresponding to the four sides of the rectangle. In this case, the second formwork 19 is composed of four panels 19a that are in close contact with the four planes of the draining section 7, respectively. In this manner, each panel 19a is fixed to the first formwork 3 by the fixing mechanism 34 so as to be in close contact with the corresponding plane on the outer peripheral surface 7a of the draining portion 7. As shown in FIG.

The fixing mechanism 34 includes, for example, a pair of screw members 34a and 34b and a bolt 34c as shown in FIG. In step S4, holes through which the bolts 34c pass are formed in the panel 19a and the first formwork 3 (main body portion 5). The members 34a and 34b are screwed to both ends of the bolt 34c, respectively, and the first formwork 3 and the panel 19a are sandwiched between the pair of screw members 34a and 34b to fasten them together. Thereby, the panel 19a is fixed to the first formwork 3. As shown in FIG. Each panel 19a is fixed to the first formwork 3 by the fixing mechanism 34 in this way. Each panel 19a may be fixed to the first formwork 3 by a plurality of fixing mechanisms 34. As shown in FIG. In one example of the fixing mechanism 34, although detailed illustration is omitted, one threaded member 34a may be a P-con (registered trademark), and the other threaded member 34b may be a form tie (registered trademark).

In step S<b>5 , the height adjusting member 32 is removed from between the inclined roof surface 1 a and the lower end surface 3 a of the first formwork 3 . At this time, since the first formwork 3 is supported by the inclined roof surface 1a via the second formwork 19, the posture of the first formwork 3 does not change even if the height adjustment member 32 is removed. horizontal. That is, the lower end surface 3a of the first formwork 3 is kept horizontal.

In step S6, as shown in FIG. 11, which is a cross-sectional view seen in the horizontal direction, the inner space of the first mold 3 and the inner space of the second mold 19 on the upper side of the first mold 3 are filled with Concrete 9 is placed.

At step S6, the partition member 31 closes the gap between the lower end surface 3a of the first formwork 3 and the inclined roof surface 1a from the side of the outer peripheral surface 5a of the first formwork 3. As a result, the concrete 9 is It is possible to prevent the liquid from flowing out of the first formwork 3 through the gap.

Further, while the poured concrete 9 remains fluid, the upper surface 10a of the concrete 9 is leveled horizontally. Thereby, the upper surface 10a of the concrete 9 becomes horizontal.

After that, when the placed concrete 9 hardens, the second mold 19 is removed from the first mold 3 and the screw member 34b and the bolt 34c are removed from the first mold 3 in step S7. Also, the holes in the first formwork 3 through which the bolts 34c penetrate may be filled with mortar. Furthermore, the partitioning member 31 and the fixing member 35 are removed from the concrete slab 1 .

In step S8, a facility foundation 10 as shown in FIG. 1, for example, is constructed by waterproof construction. That is, in step S8, for example, as shown in FIG. is fixed to the concrete slab 1 with an anchor 22. Next, the waterproof sheet 11 is placed so as to cover the main body 5 , the upper end of the waterproof sheet 11 is welded or bonded to the upper PVC steel plate 17 with an adhesive, and the lower end of the waterproof sheet 11 is attached to the lower end of the main body 5 . is bent so as to extend in the direction along the inclined roof surface 1a, and bonded to the lower PVC steel plate 18 by welding or adhesive.

12 removes the panel 19a, the fixing mechanism 34, the partitioning member 31, and the fixing member 35 as described above in FIG. The state immediately after attaching the lower PVC steel plate 18 is shown. Each lower PVC steel plate 18 is fixed to the concrete slab 1 from above the heat insulating material 15 by an anchor 22 . Each lower PVC steel plate 18 has a first portion 18a along the upper surface 1a of the concrete slab 1 and a second portion 18b rising from the first portion 18a while being in contact with the body portion 5. As shown in FIG. Thus, the four lower PVC steel plates 18 are attached to the four planes forming the outer peripheral surface 5a of the lower portion of the main body 5, respectively. Similarly, the four upper PVC steel plates 17 are attached to the four planes forming the outer peripheral surface 5a of the upper portion of the main body 5, respectively.

A gap between the upper end surface of the upper PVC steel plate 17 and the lower surface of the draining portion 7 may be filled with a sealing material 36 . The sealing material 36 may be mainly composed of silicon, for example.

(Effects of Embodiment)
According to the present embodiment, when the first formwork 3 is installed on the inclined roof surface 1a, the height adjustment member 32 is simply inserted between the first formwork 3 and the inclined roof surface 1a, and the first Since the formwork 3 is adjusted horizontally, the labor for adjusting the first formwork 3 horizontally can be reduced. Moreover, the first formwork 3 can be horizontally adjusted while the first formwork 3 is surrounded by the partition members 31 . Therefore, the first formwork 3 can be horizontally adjusted while the first formwork 3 is positioned by the partition member 31 . Therefore, the posture adjustment and positioning of the first formwork 3 can be easily performed.

Further, in a state in which the posture of the first mold 3 is horizontally adjusted by the height adjustment member 32, the second mold 19 surrounding the first mold 3 is fixed to the first mold 3, and the second mold 3 is A frame 19 is supported on the inclined roof surface 1a. Therefore, even if the height adjusting member 32 is removed, the posture of the first formwork 3 does not change and is kept horizontal.

The partition member 31 for partitioning the installation area is fixed to the inclined roof surface 1a in close contact with the inclined roof surface 1a, surrounds the lower end portion of the first formwork 3 whose posture is adjusted horizontally, and adheres to the lower end portion. are doing. Thereby, the partition member 31 closes the gap between the lower end surface 3a of the first formwork 3 and the inclined roof surface 1a from the side of the outer peripheral surface 5a of the first formwork 3 . Therefore, the partitioning member 31 has both a function of positioning the first formwork 3 and a function of preventing the concrete 9 from flowing out of the first formwork 3 through the gap. In addition, the said clearance gap is a clearance gap including the location where the height adjustment member 32 was inserted.

It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea of the present invention. For example, one or both of Modifications 1 and 2 below may be employed. In this case, points not described below may be the same as those described above, or may be appropriately changed from the above contents.

(Modification 1)
Instead of providing the waterproof sheets 11 and 12 on the outer peripheral surface 5a and the inclined roof surface 1a, asphalt waterproof materials may be attached to the outer peripheral surface 5a and the inclined roof surface 1a by the asphalt thermal construction method.

(Modification 2)
The first mold 3 may not have the draining part 7 . In this case, the second formwork 19 may not be used. In this case, step S4 is omitted, and step S5 is performed after step S3.

1 concrete slab 1a inclined roof surface 3 first formwork 3a lower end surface 4 reinforcing bar 5 body portion 5a outer peripheral surface 7 draining portion 7a outer peripheral surface 7b groove 9 concrete 9a first concrete portion 9b second concrete part, 9b1 outer peripheral surface, 10 facility foundation, 10a upper surface, 11 waterproof sheet, 12 waterproof sheet, 15 heat insulating material, 17 upper PVC steel plate, 18 lower PVC steel plate, 18a first part, 18b second part, 19 second formwork, 19a panel, 21, 22 anchor, 31 partitioning member, 32 height adjustment member, 34 fixing mechanism, 34a, 34b screwing member, 34c bolt, 35 fixing member, 36 sealing material, C central axis, R installation area, S gap

Claims (6)

A method for constructing a facility foundation rising upward from an inclined roof surface in a building having an inclined roof surface inclined from the horizontal plane, comprising:
(A) fixing a partitioning member to the inclined roof surface so as to partition an installation area for installing the first formwork on the inclined roof surface;
(B) After the above (A), the first formwork is arranged in the installation area, and in a state in which the first formwork is positioned by the partition member, the inclined roof surface and the first formwork Adjust the posture of the first formwork horizontally by inserting a height adjustment member between a part of the lower end surface of
(C) A method of constructing a facility foundation, which includes placing concrete in the inner space of the first formwork. In the above (B), the attitude of the first formwork is horizontally adjusted by inserting the height adjustment member between the inclined roof surface and the part of the lower end surface of the first formwork. 2. The height adjusting member according to claim 1, wherein a lower surface of said height adjusting member is in contact with said inclined roof surface and said height adjusting member as a whole is located above said inclined roof surface. Construction method of equipment foundation. The height adjusting member interposed between the above can be moved only along the inclined roof surface without moving the lower end surface of the first formwork upward in front of the above (C). 3. The method of constructing a facility foundation according to claim 1 or 2, wherein the equipment foundation can be removed from between. The first formwork in a horizontal posture includes a main body portion extending around a central axis facing vertically to form the internal space, and a draining portion extending outward from the upper end portion of the main body portion away from the central axis. is a
After the above (B) and before the above (C), a second formwork surrounding the outer peripheral surface of the first formwork is assembled, and the second formwork is fixed to the first formwork. ,
The second formwork fixed to the first formwork is supported on the inclined roof surface directly or via another member, is in close contact with the outer peripheral surface of the draining part, and is above the draining part. extends to the position
In the above (C), concrete is placed not only in the internal space of the first formwork, but also in the internal space of the second formwork above the first formwork . 4. The method for constructing the facility foundation according to any one of 3 . In (A) above, the partitioning member partitions the installation area and is fixed to the inclined roof surface in a state of being in close contact with the inclined roof surface,
5. The dividing member according to any one of claims 1 to 4, wherein in (C), the partition member surrounds the lower end of the first formwork whose attitude is adjusted horizontally and is in close contact with the lower end. construction method of the equipment foundation. After (B) and before (C), the height adjusting member is removed from between the inclined roof surface and the lower end surface of the first formwork. The construction method of the facility foundation according to any one of the items.

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