JP6649698B2 - Curing lid structure and curing method - Google Patents

Description

  The present invention relates to a structure of a curing lid and a curing method.

  BACKGROUND ART Conventionally, as a technique related to a curing lid, a lid described in Patent Literature 1 is known. The lid described in Patent Literature 1 has an annular seal member installed on the upper surface of a slab in a state of surrounding a through hole provided in the slab on the upper surface side of the slab, and a seal mounted on the seal member. A lid member for closing the upper part of the through-hole in a state where the member is in close contact with the upper surface of the slab.

JP 2005-48520 A

  In the above-described related art, the lid member and the seal member are in direct contact with each other. For this reason, for example, when the lid member is detached to expose the through hole at the time of working on the through hole provided in the slab, the adhesion between the seal member and the slab upper surface is reduced, and the water tightness may be reduced. . In this case, when attaching the lid member, the trouble of installing a new seal member (reconstructing the seal portion) increases.

  An object of the present invention is to provide a structure and a curing method of a curing lid that suppresses a decrease in water tightness and does not require rebuilding of a seal portion.

  The structure of the curing lid according to the present invention is a structure of a curing lid for curing a through hole provided in the slab, and a fixing member fixed around the axis of the through hole in the slab, and the slab and the fixing member. A sealing portion interposed therebetween, and a lid portion detachably attached to the fixing member and covering the through hole.

  In the structure of the curing lid, since the seal portion is interposed between the slab and the fixing member, it is possible to prevent water or the like from penetrating into the through hole between the slab and the fixing member. Since the lid is detachably attached to the fixing member, the lid may be removed from the fixing member to expose the through hole, and there is no need to remove the fixing member from the slab. Therefore, it is possible to avoid a decrease in the adhesion between the seal portion and the upper surface of the slab. As a result, it is possible to suppress a decrease in water tightness and to eliminate the need for rebuilding the seal portion.

  The lid portion is erected at a predetermined height from the fixing member on the lower end side, and has a side wall portion having an edge on the upper end side forming an opening portion, and a canopy portion provided to cover the opening portion, The side wall portion may be detachably attached to the fixing member, and the canopy portion may be provided on the upper end side of the side wall portion so as to open and close the opening. In this case, for example, when the work is performed in the through hole, the work can be easily performed through the opening by opening the canopy.

  A hinge portion and a first locking portion are provided on the upper end side of the side wall portion, and the canopy portion may be provided so that the opening can be opened and closed by the hinge portion and the first locking portion. In this case, by releasing the lock of the first locking portion, the canopy portion can be easily opened and closed using the hinge portion as a fulcrum. Further, by locking the first locking portion, it is possible to suppress the canopy from being opened by strong wind or the like.

  The fixing member may be provided with a second locking portion, and the lid may be detachably attached to the fixing member by the second locking portion. In this case, the lid can be easily attached to the fixing member by locking the second locking portion. Further, the lid can be easily removed from the fixing member by releasing the locking of the second locking portion.

  The fixing member is provided with a mounting portion on which the lid portion is mounted, and the lid portion may be attached to the fixing member by the second locking portion while being mounted on the mounting portion. Good. In this case, the weight of the lid portion is supported by the placing portion while the lid portion is placed on the placing portion. Therefore, the work of attaching and detaching the lid to and from the fixing member is further facilitated.

  The lid may include a window. In this case, for example, when checking the internal state of the curing lid, the labor for removing the lid from the fixing member can be omitted.

  The curing method according to the present invention is a curing method for curing a through hole provided in a slab, wherein a sealing portion is provided around an axis of the through hole provided in the slab, and the sealing portion is provided between the fixing member and the slab. , The fixing member is fixed to the slab, and the lid is detachably attached to the fixing member so as to cover the through hole.

  According to this curing method, the seal is interposed between the slab and the fixing member, and the lid is detachably attached to the fixing member. Therefore, for example, in the case of working in the through hole, in order to expose the through hole, the lid may be removed from the fixing member, and it is not necessary to remove the fixing member from the slab. Therefore, it is possible to avoid a decrease in the adhesion between the seal portion and the upper surface of the slab. As a result, it is possible to suppress a decrease in water tightness and to eliminate the need for rebuilding the seal portion.

  ADVANTAGE OF THE INVENTION According to this invention, the structure of the curing lid which suppresses the fall of watertightness, and a curing method can be provided.

It is a top view of the rooftop floor in which the curing lid concerning embodiment is arranged. It is a fragmentary sectional view of the rooftop floor where the curing lid concerning an embodiment is arranged. It is a perspective view showing a curing lid concerning an embodiment. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3. FIG. 4A is a sectional view taken along a line Va-Va in FIG. 3. FIG. 4B is a cross-sectional view along the line Vb-Vb in FIG. 3.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the same or corresponding elements will be denoted by the same reference symbols, without redundant description. Hereinafter, the curing lid 1 having the structure of the curing lid according to the present invention will be described as an example. In the following description, as shown in each drawing, an XYZ orthogonal coordinate system in which the Z axis is a vertical axis and the XY plane is a horizontal plane is set, and X, Y, and Z are used to describe the positional relationship of each part. is there.

  FIG. 1 is a plan view of a rooftop floor where a curing lid according to the embodiment is arranged. FIG. 2 is a partial cross-sectional view of a rooftop floor where the curing lid according to the embodiment is arranged. As shown in FIGS. 1 and 2, the curing lid 1 having the structure of the curing lid according to the embodiment is a water stoppage for curing a slab opening (through hole) 3 provided in a roof slab (slab) 2. The lid. When the slab opening 3 is provided in the roof slab 2 at the time of construction on the roof of the building B, the curing lid 1 is used by being installed in the slab opening 3 in order to stop direct infiltration of rainwater into the building. . The slab opening 3 is a hole for passing the bundle pillar 4 when a structure is newly installed, for example, above a rooftop floor. A plurality of slab openings 3 are provided in the roof slab 2 at positions corresponding to the positions of the bundle columns 4. The slab opening 3 is, for example, a rectangular or square through hole. The curing lid 1 is installed in each of the plurality of slab openings 3.

  The bundle pillar 4 is a quadrangular prism-shaped member that stands upright from the existing beam 5 extending below the roof slab 2, extends in the Z direction, and projects from the roof slab 2. At the upper end of the bundle 4, a new steel frame 6 is connected and forms a part of the base of a structure to be newly installed above the rooftop floor. At the lower end of the bundle 4, for example, the bundle 4 may be connected to the existing pillar 8 via the newly installed reinforcing part 7. A plurality of bundle columns 4 are provided along the existing beam 5.

  FIG. 3 is a perspective view showing a curing lid according to the embodiment. FIG. 4 is a sectional view taken along line IV-IV in FIG. FIG. 5A is a cross-sectional view along the line Va-Va in FIG. FIG. 5B is a cross-sectional view along the line Vb-Vb in FIG. As shown in FIGS. 2 to 5, the curing lid 1 includes a fixing member 10 and a lid 20.

  The fixing member 10 is fixed around the axis of the slab opening 3 in the roof slab 2 over the entire circumference of the slab opening 3. The fixing member 10 is arranged substantially parallel to each edge of the slab opening 3 so that each side of the fixing member 10 is more outwardly spaced than each edge of the slab opening 3. The slab opening 3 has a rectangular ring shape when viewed from the Z direction. As the fixing member 10, an L-shaped angle member having an L-shaped cross section on each side is used. As a material of the fixing member 10, for example, iron is used. The fixing member 10 has a first plate portion 11 and a second plate portion 12.

  The first plate portion 11 is one surface of the L-shaped angle material. The first plate portion 11 is arranged along the roof slab 2 (along the XY plane) so as to extend from the second plate portion 12 toward the outer peripheral side when viewed from the Z direction. The first plate portion 11 is provided with a plurality of bolt holes 13 along the extending direction of the fixing member 10. An anchor bolt 14 is inserted into the bolt hole 13. The anchor bolt 14 is a bolt whose lower end is embedded in the roof slab 2 and whose upper end protrudes from the roof slab 2. A plurality of anchor bolts 14 are provided along the fixing member 10. The fixing member 10 is fixed by screwing a nut 15 to an anchor bolt 14. A seal material for stopping water may be applied to the anchor bolt 14 and the nut 15.

  The fixing member 10 is fixed to the roof slab 2 with a seal member (seal part) S and a liner 16 interposed between the first plate portion 11 and the roof slab 2. The seal member S is a water stop member that suppresses rainwater or the like flowing along the roof slab 2 from entering the slab opening 3 side. As the seal member S, for example, a filler such as silicone rubber can be used. The liner 16 is a spacer for providing a predetermined gap between the first plate portion 11 and the roof slab 2. The liner 16 is provided with a bolt hole 13 at a position corresponding to the anchor bolt 14. The seal member S and the liner 16 are provided continuously around the axis of the slab opening 3 in the roof slab 2 along the first plate portion 11.

  The second plate portion 12 is the other surface of the L-shaped angle member, and is disposed along a surface substantially orthogonal to the roof slab 2. A plurality of mounting portions 18 are provided on the second plate portion 12. The mounting portion 18 is a member provided to protrude along the XY plane with the second plate portion 12 as a base end. The mounting portion 18 supports the weight of the lid portion 20 by mounting the lid portion 20 (the side wall portion 21 and the canopy portion 22) when the side wall portion 21 is locked by the second locking portion 19. . The mounting portion 18 is arranged at a position where it is easy to lock a second locking portion 19, which will be described later. When the side wall portion 21 is locked by the second locking portion 19, the side wall portion Adjust the position of 21. Thus, the side wall portion 21 is attached to the fixing member 10 by the second locking portion 19 while being placed on the placement portion 18.

  The second plate portion 12 is provided with a plurality of second locking portions 19. The second locking portion 19 attaches the side wall portion 21 to the fixing member 10 in a detachable manner. As the second locking portion 19, for example, a catch clip is used. The second locking portion 19 has a movable hook including an operation lever and a fixed hook. The second locking portion 19 is locked by hooking the movable hook on the fixed hook by the operation lever. The second locking portion 19 is unlocked by releasing the movable hook from the fixed hook by the operation lever. One of the movable hook and the fixed hook is provided on the fixed member 10, and the other is provided on the side wall 21. Here, the fixed hook is provided at the upper end of the second plate portion 12, and the movable hook is provided at the lower end of the side wall portion 21. As described above, the side wall 21 is detachably attached to the fixing member 10. Therefore, for example, a plurality of lids 20 having different heights of the side wall portions 21 can be prepared, and different lids 20 can be used for one fixing member 10 by replacing each other.

  The cover 20 is a member that covers the slab opening 3. The cover 20 is detachably attached to the fixing member 10. In the curing lid 1, by removing at least the lid 20 from the fixing member 10, the slab opening 3 can be exposed without detaching the fixing member 10. Therefore, a decrease in the adhesion between the seal member S and the upper surface of the roof slab 2 is avoided.

  The lid 20 has a side wall 21 and a canopy 22. The side wall 21 has plate portions 21a to 21d. The side wall portion 21 is formed in a rectangular tubular shape by the plate portions 21a to 21d. As a material of the plate portions 21a to 21d, for example, a zinc steel plate is used. The side wall portion 21 is erected from the fixing member 10 while being placed on the placement portion 18. The side wall portion 21 has a bent portion 21e on the lower end side. The bent portion 21e is a portion that comes into contact with the mounting portion 18 when the side wall portion 21 is erected from the fixing member 10. The bent portion 21e is provided, for example, by bending the lower end side of the side wall portion 21 so as to protrude along the XY plane from the lower end side edge of the side wall portion 21 as a base end. The side wall portion 21 is erected at a predetermined height from the height at which the mounting portion 18 is provided on the second plate portion 12 of the fixing member 10. That is, the side wall portion 21 is erected at a predetermined height from the fixing member 10 on the lower end side. As the predetermined height, for example, in order to avoid interference between the bundled pillar 4 and the canopy part 22, the height of the bundled pillar 4 can be set to be larger than the protruding height from the roof slab 2.

  In the side wall 21, the edge on the upper end side of the plate portions 21 a to 21 d forms the opening 23. The opening 23 is an opening that exposes the slab opening 3 by, for example, opening and closing the canopy portion 22 when working on the slab opening 3. In the side wall portion 21, a rubber member 24 is attached to an edge on the upper end side. The rubber member 24 is a buffer between the side wall 21 and the canopy 22. The rubber member 24 is a water-stopping member that suppresses, for example, laterally hit rainwater from entering between the side wall 21 and the canopy 22 into the slab opening 3.

  A plurality of hinge portions 25 are provided at the upper end of the plate portion 21d. The hinge 25 is a hinge that pivotally supports (opens and closes) the canopy 22 around the hinge 25. The hinge portion 25 is connected to an edge of the canopy portion 22 at one end in the X direction. At the upper end of the plate portion 21c, a plurality of first locking portions 26 are provided via a base 27. As the first locking portion 26, for example, a catch clip is used. The first locking portion 26 is configured similarly to the second locking portion 19. One of the movable hook and the fixed hook of the first locking portion 26 is provided on the side wall portion 21 side, and the other is provided on the canopy portion 22. Here, the fixing hook is provided at the upper end of the side wall 21 via the base 27.

  The canopy 22 is provided so as to cover the opening 23. The canopy portion 22 is provided at the upper end side of the side wall portion 21 so that the opening portion 23 can be opened and closed by the above-described hinge portion 25 and first locking portion 26. The canopy part 22 has a top plate and a frame part. The top plate is a rectangular plate-like member that extends substantially parallel to the roof slab 2 with the canopy portion 22 covering the opening 23. The frame portion is a plate-like member that extends downward from four edges of the top plate in a state where the canopy portion 22 blocks the opening 23. In the canopy part 22, a movable hook of the first locking part 26 is provided at the lower end of the frame part on the other end side in the X direction. As described above, in the canopy portion 22, being locked by the first locking portion 26, opening by a strong wind or the like is suppressed.

  The canopy 22 includes a window 28 provided on the top plate. The window 28 is a transparent plate member for checking the internal state of the curing lid 1. As the window portion 28, for example, an acrylic plate, a polycarbonate plate, a glass plate, or the like can be used.

  Next, an example of a curing method using the curing lid 1 will be described. When the curing lid 1 is installed, the roof slab 2 is provided with the slab opening 3.

  First, an anchor bolt 14 is provided around the axis of the slab opening 3 in the roof slab 2. The anchor bolts 14 are spaced apart from the respective edges of the slab opening 3 toward the outer peripheral side and are arranged substantially parallel to the respective edges of the slab opening 3. The anchor bolts 14 are provided on the roof slab 2 over the entire circumference of the slab opening 3 at positions corresponding to the bolt holes 13 and the bolt holes 17 and at a separation distance.

  Subsequently, the liner 16 is placed on the roof slab 2 such that each of the anchor bolts 14 is inserted into the bolt hole 17. The first plate portion 11 of the fixing member 10 is placed on the liner 16 such that each of the anchor bolts 14 is inserted into the bolt hole 17. Subsequently, the fixing member 10 is fixed to the roof slab 2 by the nut 15. Then, the seal member S is filled between the first plate portion 11 and the roof slab 2. Thus, the seal member S is interposed between the fixing member 10 and the roof slab 2.

  Subsequently, the fixing hooks of the placing portion 18 and the second locking portion 19 are attached to the upper end of the second plate portion 12 of the fixing member 10. The movable hook of the second locking portion 19 is attached to the lower ends of the plate portions 21c and 21d. Then, the cover 20 is detachably attached to the fixing member 10 so as to cover the slab opening 3. Specifically, the bent portion 21e is placed on the placing portion 18, and the side wall portion 21 stands upright at a predetermined height from the height at which the placing portion 18 is provided on the second plate portion 12 of the fixing member 10. Is done. That is, the side wall portion 21 is erected at a predetermined height from the fixing member 10 on the lower end side. Then, the second locking portion 19 is locked in a state where the bent portion 21 e is mounted on the mounting portion 18, and the side wall portion 21 (the plate portions 21 a to 21 d) is attached to the fixing member 10. The rubber member 24 is attached to the opening 23.

  Subsequently, the hinge 25 is attached to the upper end of the plate 21d, and the fixed hook of the first locking portion 26 is attached to the upper end of the plate 21c via the base 27. The movable hook of the first locking portion 26 is attached to the lower end of the frame portion of the canopy portion 22 at the other end in the X direction. Then, one end of the canopy 22 is connected to the hinge 25, and the other end of the canopy 22 is locked by the first locking portion 26, so that the opening 23 can be opened and closed. Is attached.

  Thereafter, for example, the work is performed through the opening 23 while the canopy 22 is opened and the slab opening 3 is exposed until, for example, the bundle pillar 4 and the newly installed reinforcing portion 7 are provided (see FIG. 2). The slab is cured in a state where the canopy part 22 is closed and the opening part 23 is closed, so that water is prevented from entering the slab opening 3. After the bundle 4 and the newly installed reinforcing portion 7 are provided, concrete is poured into the slab opening 3 so as to be integrated with the roof slab 2. Therefore, since the slab opening 3 is not flooded, the curing lid 1 is disassembled in the reverse order to the above order, and the curing lid 1 is removed. Thereafter, the new steel frame 6 is connected to the bundle 4 (see FIG. 2).

  According to the structure of the curing lid 1 configured as described above, since the sealing member S is interposed between the roof slab 2 and the fixing member 10, water or the like passes between the roof slab 2 and the fixing member 10. Thus, it is possible to prevent the slab from entering the slab opening 3. Since the lid 20 is detachably attached to the fixing member 10, in order to expose the slab opening 3, the lid 20 may be removed from the fixing member, and the fixing member 10 is removed from the roof slab 2. No need to remove. Therefore, it is possible to avoid a decrease in the adhesion between the seal member S and the upper surface of the roof slab 2. As a result, it is possible to suppress a decrease in water tightness and to eliminate the need for rebuilding the seal member S.

  Further, the lid 20 has a side wall 21 having an upper edge forming an opening 23, and a canopy 22 provided so as to cover the opening 23. The side wall portion 21 is detachably attached to the fixing member 10, and the canopy portion 22 is provided on the upper end side of the side wall portion 21 so as to open and close the opening 23. Thereby, for example, when working on the slab opening 3, the work can be easily performed via the opening 23 by opening the canopy 22. In addition, since the canopy part 22 opens and it communicates with the lower part (lower floor) of the roof slab 2, the slab opening 3 can be used as a ventilation hole at the time of work on the lower floor, for example.

  Note that the side wall portion 21 is erected from the fixing member 10 at a predetermined height that is larger than the height of the bundle pillar 4 protruding from the roof slab 2. Thereby, even if the height from the roof slab 2 is less than the predetermined height and the bundle 4 projects from the slab opening 3, for example, interference between the bundle 4 and the canopy portion 22 can be avoided.

  A hinge portion 25 and a first locking portion 26 are provided on the upper end side of the side wall portion 21, and the canopy portion 22 is provided so that the opening portion can be opened and closed by the hinge portion 25 and the first locking portion 26. Have been. Thus, by releasing the locking of the first locking portion 26, the canopy portion 22 can be easily opened and closed using the hinge portion 25 as a fulcrum. Further, by locking the first locking portion 26, it is possible to suppress the canopy portion 22 from being opened by strong wind or the like.

  The fixing member 10 is provided with a second locking portion 19, and the side wall portion 21 is detachably attached to the fixing member 10 by the second locking portion 19. Thus, the lid 20 can be easily attached to the fixing member 10 by locking the second locking portion 19. Further, the lid 20 can be easily removed from the fixing member 10 by releasing the lock of the second locking portion 19.

  The fixing member 10 is provided with a mounting portion 18 on which the bent portion 21e of the side wall portion 21 is mounted. The side wall portion 21 is attached to the fixed member 10 by the second locking portion 19 while being placed on the placement portion 18. Thus, the weight of the lid 20 is supported by the mounting portion 18 in a state where the side wall portion 21 is mounted on the mounting portion 18. Therefore, the work of attaching and detaching the lid 20 to and from the fixing member 10 is further facilitated.

  The canopy 22 includes a window 28. Thereby, for example, when checking the internal state of the curing lid 1, the labor of removing the lid 20 from the fixing member and the labor of opening and closing the canopy 22 can be omitted.

  Further, according to the curing method according to the present embodiment, the sealing member S is interposed between the roof slab 2 and the fixing member 10, and the lid 20 is detachably attached to the fixing member 10. Thus, for example, in the case of working in the slab opening 3, in order to expose the slab opening 3, the lid 20 may be removed from the fixing member 10, and there is no need to remove the fixing member 10 from the roof slab 2. Therefore, it is possible to avoid a decrease in the adhesion between the seal member S and the upper surface of the roof slab 2. As a result, it is possible to suppress a decrease in water tightness and to eliminate the need for rebuilding the seal member S.

  The preferred embodiment according to the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and may be modified or applied to other embodiments without changing the gist described in each claim. May be.

  In the above-described embodiment, the lid portion 20 is configured by the separate side wall portion 21 and the canopy portion 22, but the lid portion 20 may be integrally configured. Further, instead of the side wall portion 21, the second plate portion 12 of the fixing member 10 is erected at a predetermined height, and a hinge portion 25 and a first locking portion 26 are provided on the upper end side of the second plate portion 12. The canopy part 22 may be provided on the upper end side of the second plate part 12 so that the opening part 23 can be opened and closed. The point is that the lid 20 covers the slab opening 3 and may be detachably attached to the fixing member 10.

  In the above embodiment, the window 28 is provided on the canopy 22, but the window 28 may be provided on the side wall 21. The window 28 may not be provided on either the side wall 21 or the canopy 22.

  DESCRIPTION OF SYMBOLS 1 ... Curing lid, 2 ... Roof slab (slab), 3 ... Slab opening (through-hole), 10 ... Fixing member, 18 ... Placement part, 19 ... Second locking part, 20 ... Lid part, 21 ... Side wall part , 22 ... canopy part, 23 ... opening part, 25 ... hinge part, 26 ... first locking part, 28 ... window part, S ... seal member.

Claims (1)

A curing method for curing a through hole provided in a slab using a curing lid as a water stop lid,
A seal portion is provided around the axis of the through hole in the slab,
Fixing the fixing member to the slab by interposing the seal portion between the fixing member and the slab,
A cover having an opening that exposes the through-hole and a canopy including a top plate that is a plate member and that covers the opening and is provided to be able to open and close the opening, so as to cover the through-hole. Removably attached to the fixing member ,
The through-hole is a through-hole provided in the slab for passing a bundle that is provided on an existing beam or existing column extending below the slab on the rooftop and supports a structure newly installed above the slab. Yes,
The canopy is opened to perform work through the opening with the through-hole exposed until the bundle is provided, or until the bundle is provided, Closed to cure with the opening closed,
After the bundle pillar is provided, the through-hole is closed by being poured concrete so as to be integrated with the slab,
After the through-hole is closed, the curing lid is disassembled and removed in the order of removing the lid from the fixing member, removing the fixing member from the slab, and removing the seal from the slab. , Curing method.

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