JP2009041268A - Jointing member and joint structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction joint embedded member and a structure of a construction joint section capable of draining flood in a satisfactory manner. <P>SOLUTION: In this structure of the construction joint section, a basic part 15 for engaging with a construction joint bar 21 and a tip part 16 positioned on an inner form side are formed by an upper face plate 11 and a bottom face plate 12 of the construction joint embedded member 10a, length of an interval between them is gradually reduced toward the tip part, and a slope descending toward an external surface of a wall part is formed in a boundary between the bottom face plate 12 and a lower story wall part 30. A back board 13 for preventing the flooding water flowing down on the upper face plate 11 from intruding is positioned on the upper face plate 11 near the tip part 16, a first water passing hole 18a is drilled nearer to a basic part 15 side more than the back board 13, and a second water passing hole 18b is drilled on the bottom face plate 12 to let the flooding water stopped by the back board 13 flow into the boundary between the bottom face plate 12 and the lower story wall part 30. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a joining member for embedding an earthquake-resistant slit in a joining part in a concrete building, and a structure of the joining part.

In general, concrete buildings are designed to ensure the strength of the building itself with columns and beams, and the walls are divided into multiple regions in consideration of the arrangement of steel frames such as columns and beams. It is formed by placing concrete in the wall. Horizontal and vertical joints are formed at the boundaries between these walls, and forces from earthquakes act as shear forces on the joints and nearby walls via columns and beams. However, this shearing force and the like is absorbed and relaxed by an earthquake-resistant slit embedded in the joint portion so that cracks and the like do not occur in the wall portion. However, in case of rainwater or the like inundated in the horizontal direction, in order to drain this and prevent rainwater or the like from penetrating indoors, as shown in FIG. It is necessary to take measures such as embedding a joint-embedding member that forms a downward slope toward the surface (for example, Patent Document 1). In FIG. 5, 1 is a transfer embedding member, 2 is an upper floor wall portion, 3 is a lower floor wall portion, 4 is a slope facing the outer surface of the lower floor wall portion, and 5 is a coking portion.
Japanese Patent No. 3193908

  However, in recent years when rainfall has increased, just draining rainwater, etc. that infiltrates from the boundary part, etc., on the down slope toward the outer surface of the lower floor walls, the permeation penetrates into the horizontal seismic slits and the horizontal seismic slits and walls It may be possible to deteriorate the part, and further to penetrate into the room. SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to realize a structure of a joint-embedding member and a joint part that can drain water in a horizontal joint part more satisfactorily.

  In order to solve the above-mentioned problems, a joint embedding member according to the present invention (Claim 1) has a top plate, a bottom plate and a water return, and the top plate and the bottom plate are fixed to the outer mold. A base portion for engaging with the ground rod and a tip portion positioned on the inner mold frame side with respect to the base portion in the inner and outer molds are formed, and the distance between them narrows toward the tip portion and is connected at the tip portion. Therefore, at the boundary between the bottom plate and the lower floor wall portion of the joint member that is engaged with the joint core, the outer mold frame side (the lower floor wall outer surface side after the outer mold frame is removed) A slope that descends toward is formed. Further, the top plate has a water return located in the vicinity of the tip, and a first water passage hole is formed on the base side of the water return, and further, a second water passage hole is formed on the bottom plate. It has been drilled. Therefore, rainwater that has been submerged in the joint, or rainwater that has permeated from the outer surface of the wall into the wall and flowed down to the top plate of the joint is blocked by water return and permeates the horizontal slit side and the indoor side. Can not do it. The rainwater or the like that has been prevented from penetrating flows down to the space between the top plate and the bottom plate through the first water passage hole, and is drained from the second water passage hole formed in the bottom plate. The water thus drained flows down the boundary between the bottom plate and the lower floor wall toward the outer surface of the lower floor wall and is drained from the wall.

Furthermore, in the joint embedding member (Claim 2) having a cover portion covering the upper portion of the first water passage hole, and a gap is formed between the cover portion and the upper surface plate, the first water passage hole is provided. However, the flooding can flow down from the first water passage hole through the gap.
In the joint embedding member (Claim 3) further including an anchor portion that is positioned on the distal end side of the second water passage hole and extends from the bottom plate, the anchor portion is embedded in the lower floor wall concrete and the lower floor floor. It is positioned securely with respect to the wall, and the anchor prevents the rainwater drained from the second water passage hole to the boundary between the bottom plate and the lower floor wall from entering the room. Can be drained more reliably toward the outer surface of the wall.

  Engage one of the above-mentioned joint-embedding members with the joint joint fixed to the outer mold, position a horizontal slit between the inner mold and the joint-embedding member, and cast concrete into the mold According to the structure of the connecting part of the wall part that is installed to form the wall part, the rain water that has been submerged in the connecting part, the rain water that has penetrated into the wall part and has flowed down to the top plate of the connecting and embedding member, etc. It can be prevented by water return to prevent penetration into the horizontal slit and the indoor side, and the water is led to the boundary between the bottom plate and the lower floor wall portion of the burying embedding member, and on the outer surface of the lower floor wall portion. Can be drained.

  As described above, according to the structure of the connecting and embedding member and the connecting portion of the wall portion according to the present invention, rainwater or the like immersed in the connecting portion, or the upper surface plate of the connecting portion that permeates from the outer surface of the wall portion to the wall portion. Rainwater that has flowed down to the outside can be better drained to the outer surface of the wall. Therefore, it is possible to prevent water from penetrating into the horizontal slit side and the indoor side and to enhance the durability of the wall portion as well as the horizontal slit.

  Hereinafter, the structure of the joining and embedding member and joining part according to the present invention will be described with reference to the drawings.

  An embodiment of the joint implant member according to the present invention will be described with reference to FIGS. Here, FIG. 1 shows a schematic cross-sectional configuration of the joining and embedding member 10a, and FIG. 2 shows a process of embedding the joining and embedding member 10a in the joining part together with the horizontal slit and a schematic sectional structure of the joining part. FIG. 3 is a diagram for explaining, and FIG. 3 is a diagram showing a schematic cross-sectional structure of the joining portion in the vicinity of the joining member 10a.

(Jointing member)
As shown in FIG. 1, the connecting and embedding member 10 a has a top plate 11, a bottom plate 12, and a water return 13, and is formed of a resin such as vinyl chloride, for example. The top plate 11 and the bottom plate 12 are connected by ribs 14 a to 14 c to form a base portion 15 and a tip portion 16. The tip portion 16 is provided with a water return 13, and in the vicinity of the water return 13, a first water passage hole 18 a communicating with the space 17 inside the joining and embedding member 10 a is provided. A second water passage hole 18 b communicating with the outside of the joint member 10 a is provided in the bottom plate 12. The joint burying member 10 a can be engaged with the joint seam 21 fixed to the outer mold 20 at the base portion 15. The distal end portion 16 is positioned closer to the inner mold frame 22 than the base portion 15 between the outer mold frame 20 and the inner mold frame 22 (see FIG. 2).

  The structure and the like of the joining and embedding member 10a will be described in more detail. The top plate 11 and the bottom plate 12 are spaced from each other toward the distal end portion 16, and the joining and embedding member 10a attached to the joining joint rod 21 is provided. Are positioned such that the top plate 11 is positioned substantially horizontally and the bottom plate 12 is lowered toward the outer mold frame 20 side. Here, the dimensions of the connecting and embedding member 10a are exemplified. The top plate 11 has a horizontal length (width of the connecting and embedding member 10a) in FIG. Is 22 mm at the end 15 a of the base 15 and 10 mm at the end 16 a of the tip 16. The fixed length of the joint member 10a is 2 m.

  The top plate 11 and the bottom plate 12 are connected by a rib 14a at a position about 5 mm from the end portion 15a of the base portion 15, are connected by a rib 14b at the end portion 16a of the front end portion 16, and at a position about 18 mm from the rib 14b. They are connected by ribs 14c. Thus, the base 15 is formed with the concave portion 15b of the base 15 by the top plate 11, the bottom plate 12 and the rib 14a, and is partitioned by the top plate 11, the bottom plate 12, the rib 14b and the rib 14c on the tip 16 side. A space 17 is formed. The top plate 11 and the bottom plate 12 may be directly connected to each other at the end portion 15a of the base portion 15 without using the rib 14b.

  By the way, each area | region of the upper surface board 11 and the bottom face board 12 to which the rib 14c is connected forms the step parts 11d and 12d. Here, the outer surface of the upper surface plate 11 on the side of the tip portion 16 from the step portion 11d is 11a in FIG. 1, and the outer surface of the upper surface plate 11 on the side of the base portion 15 is 11b in FIG. 1, which is the inner surface facing the outer surface 11b. Is 11c in FIG. Similarly, the outer surface of the bottom plate 12 on the tip 16 side from the step 12d is 12a in FIG. 1, the outer surface of the bottom plate 12 on the base 15 side is 12b in FIG. 1, and the inner surface opposite to the outer surface 12b is It is 12c in FIG. The outer surface 11a of the top plate 11 is positioned on the same plane as the inner surface 11c, and the outer surface 12a of the bottom plate 12 is positioned on the same plane as the inner surface 12c. The top plate 11 and the bottom plate 12 may not have the step portion 11d and the step 12d.

  On the outer surface 11a of the upper surface plate 11 which is shifted from the end portion 16a to the base portion 15 side by about 5 mm, a water return 13 having a height of about 15 mm is erected over the length direction of the jointing member 10a. A first water passage hole 18a (hole diameter: 2 to 3 mm) communicating with the outer surface 11a of the top plate 11 and the space 17 is formed at a position slightly (3 mm) closer to the base 15 side than the water return 13. Yes. Further, the bottom plate 12 is provided with a second water passage hole 18 b that communicates the space 17 with the outer surface 12 a of the bottom plate 12. A large number of the first water passage holes 18a and the second water passage holes 18b are formed at intervals (6 to 10 mm) along the length direction of the jointing member 10a.

  By the way, the cross-sectional shape of the joint seam 21 is 20 mm on the side engaged with the recess 15 b of the joint member 10 a, 25 mm on the side fixed to the outer mold frame 20, and the horizontal direction (thickness) in FIG. 1 is 20 mm. It has a trapezoidal shape in cross section. 1 is attached to the outer mold 20 so that the upper surface 21a in FIG. 1 is orthogonal to the outer mold 20, and the lower surface 21b in FIG. A slope that descends is formed. Therefore, in the joint embedding member 10 a engaged with the joint seam 21, the outer surface 11 a of the upper surface plate 11 is positioned on the same plane as the surface 21 a of the joint seam 21.

  In this way, the joint burying member 10a is engaged with the joint core 21 at the concave portion 15b of the base portion 15, the water return 13 is erected at the distal end portion 16, and further communicates with the space 17 from the outer surface 11a of the upper surface plate 11. A first water passage hole 18 a and a second water passage hole 18 b communicating from the space 17 to the lower outside of the bottom plate 12 are provided. The outer surfaces 12 a and 12 b of the bottom plate 12 form a slope that descends toward the outer mold 20.

(Embedded joint embedding member, etc. in joint part)
Next, an embedding process of the joint embedding member 10a and the like will be described with reference to FIG. First, after the outer mold 20 is installed, the joint seam 21 is fixed to the inner surface 20a of the outer mold with a nail or the like, and then the joint embedding member 10a is engaged with the joint seam 21 (FIG. 2A). Further, a headless nail is driven from the tip 16 side of the joint implant member 10a to fix the joint implant member 10a to the joint joint rod 21, and then the inner mold frame 22 is positioned at a predetermined position.

  Next, concrete is cast in the mold so that the outer surface 11a of the upper surface plate 11 of the jointing member 10a and the upper surface of the concrete coincide with each other to form the lower floor portion 30 (FIG. 2 (b)). . As a result, the upper part of the lower floor wall 30 is exposed between the joint joint 21 and the joint member 10a, and between the tip 16 of the joint member 10a and the inner surface 22a. A portion having an upper surface 30b is formed. Note that reference numeral 31 in FIG. 2B denotes a reinforcing bar embedded in the upper floor wall portion 40 and the lower floor wall portion 30. 2B and 2C, the right side of the lower floor wall 30 is in contact with the concrete portion of the floor (the upper surface 30b of the lower floor wall 30 is at the same level as the floor surface). ).

  After the concrete of the lower floor wall 30 is hardened, the horizontal slit 50 is positioned on the upper surface 30b of the lower floor wall 30 (FIG. 2C). Here, the horizontal slit 50 has, for example, a stretchable fireproof member 50d at the center in the width direction, and is adapted to the interval W between the water return 13 of the joint embedding member 10a and the inner frame inner surface 22a. The width is slightly wider than the interval W. Accordingly, in the horizontal slit 50, one side surface 50a is in contact with the water return 13 of the joining and embedding member 10a, and the bottom surface 50b is in contact with the upper surface 30b of the lower floor wall portion 30 (a part of the bottom surface 50b is above the joining and embedding member 10a). The other side surface 50c is in contact with the inner mold inner surface 22a and covers the upper surface 30b of the lower floor wall 30. In addition, the horizontal slit 50 is manufactured in the range of 80-500 mm so that the width can be adapted to various thicknesses of the upper floor wall portion 40, and has a thickness of 15-35 mm.

  After positioning the horizontal slit 50 in this way, concrete for forming the upper floor wall portion 40 is placed above the lower floor wall portion 30. Thus, the horizontal slit 50 is positioned between the lower floor wall 30 and the upper floor 40. After the concrete of the upper floor wall portion 40 is hardened, the outer mold 20, the joint joint 21 and the inner mold 22 are removed. The headless nail used to fix the joint embedding member 10 a to the joint seam 21 is removed together with the outer mold frame 20 and the joint seam 21. Thereafter, as shown in FIG. 3, the portion where the joint joint rod 21 was present is filled with caulking (coking portion 51 is formed). In the joint portion 60 formed between the lower floor wall portion 30 and the upper floor wall portion 40 in this way, the shearing force and the like acting on the joint portion 60 is alleviated by the horizontal slit 50.

(Drained water)
By the way, in the case of heavy rain, rainwater or the like that has been submerged in the joining portion 60 from the outer surface 40a of the upper floor wall permeates the outer surfaces 11b and 11a of the upper surface plate 11 of the joining embedding member 10a toward the indoor side. In addition, it is unavoidable that rainwater or the like that has been submerged in the upper floor wall portion 40 from the outer surface 40a of the upper floor wall permeates and flows down to the passing and embedding member 10a. These submerged waters merge and try to penetrate the outer surfaces 11 b and 11 a of the upper surface plate 11 into the horizontal slit 50 (inside the room), but are blocked by the water return 13. The top portion 13a of the water return 13 is folded back toward the base portion 15 side, and more reliably prevents penetration into the horizontal slit 50 (FIG. 3).

  The water thus prevented from permeating flows down from the first water passage hole 18a to the space 17 inside the jointing member 10a. The submerged water that has flowed down into the space 17 is further drained from the second water passage hole 18b to the outside of the jointing member 10a. Here, since the boundary between the bottom plate 12 and the lower floor wall portion 30 forms an inclined surface that descends toward the outer surface of the lower floor wall portion 30, the water drained from the second water passage hole 18b is The boundary between the bottom plate 12 and the lower floor wall portion 30 flows down toward the lower floor wall portion outer surface 30a, reaches the boundary between the caulking portion 51 and the lower floor wall portion 30, and the lower floor wall portion outer surface 30a near the boundary. It drains from the water or evaporates into the atmosphere. The first water passage hole 18a and the second water passage hole 18b are formed on the boundary between the bottom surface plate 12 and the lower floor wall portion 30 through the space 17 when the water has flowed down to the top surface plate 11 of the jointing member 10a. For example, it may be perforated at a position according to the base 15 side from the vicinity of the water return 13, and a plurality of positions may be positioned in the width direction of the joint embedding member 10 a. It may be.

Next, another embodiment (embodiment 2) of the joint embedding member according to the present invention will be described with reference to FIG. Here, FIG. 4 shows a schematic cross-sectional configuration of the joint member 10b. Components having the same functions as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the connecting and embedding member 10b, the upper portion of the first water passage hole 18a is covered with the cover portion 19, and the anchor portion 13 'extends from between the second water passage hole 18b and the end portion 16a. Yes.

  The cover portion 19 protrudes like a ridge from the water return 13 toward the base portion 15 and covers the upper part of the first water passage hole 18a. The front end portion 19a of the cover portion 19 forms a gap 19b between the top surface plate 11 and the outer surface 11a over the entire region in the length direction of the joint member 10b. Moreover, the cover part 19 can maintain the gap 19b against the pressure of the concrete when the jointing member 10b is embedded in the jointing part 60. Accordingly, the water can flow down from the first water passage hole 18a to the space 17 through the gap 19b. Here, the cover portion 19 may not be overhanging from the water return 13 as long as it covers the upper portion of the first water passage hole 18a and can maintain the gap 19b against the pressure of the concrete.

  The anchor portion 13 ′ has a length of about 10 mm and is embedded in the concrete of the lower floor wall portion 30. Therefore, the anchor portion 13 ′ can reliably position the splicing and embedding member 10 b with respect to the lower floor wall portion 30. Further, the anchor portion 13 ′ can prevent rainwater or the like drained from the second water passage hole 18 b from penetrating into the indoor side, and can flow more reliably toward the lower floor wall portion outer surface 30 a. Here, the connecting and embedding member 10b may have one of the cover portion 19 and the anchor portion 13 '.

  In addition, this invention is not limited to each Example, It can deform | transform suitably and implement in the range which does not deviate from the meaning.

It is a figure which shows the cross-sectional schematic structure of the joint embedding member which concerns on one Example (Example 1) of this invention. It is a figure for demonstrating the process and schematic sectional structure which embed the joining embedding member of FIG. 1 in a joining part with a horizontal slit. FIG. 2 is a diagram showing a schematic cross-sectional structure of a joint portion in the vicinity of the joint implant member when the joint implant member shown in FIG. 1 is embedded. It is a figure which shows the cross-sectional schematic structure of the joint embedding member which concerns on the other Example (Example 2) of this invention. It is a figure which shows the cross-sectional schematic structure of the conventional joining embedding member and a joining part.

Explanation of symbols

10a, 10b Joint member 11 Top plate 12 Bottom plate 13 Water return 13 'Anchor portion 15 Base portion 16 Tip portion 17 Space 18a First water passage hole 18b Second water passage hole 19 Cover portion 20 Outer mold frame 21 Joint rod 22 Inner form 30 Lower floor wall 40 Upper floor wall 50 Horizontal slit 60 Joint

Claims (4)

A joint embedding member embedded in a joint portion of a wall portion formed by placing concrete between an outer mold frame and an inner mold frame,
Having a top plate, a bottom plate and a water return,
The base plate for engaging the top plate and the bottom plate with a joint pin fixed to the outer mold frame, and the inner mold frame between the outer mold frame and the inner mold frame rather than the base part. Forming a tip located on the side,
The upper surface plate and the bottom surface plate are inclined so that the distance between the top surface plate and the bottom surface plate is narrowed toward the tip, and the bottom surface plate of the joining embedded member engaged with the joint seam is lowered toward the outer form frame side. And connected at the tip,
On the upper surface plate, the water return is positioned in the vicinity of the tip, and the first water passage hole is drilled closer to the base than the water return,
A second water passage hole is provided in the bottom plate for allowing the water flowing from the first water passage hole to flow into the space between the upper surface plate and the bottom surface plate. Joint member.   The jointing and embedding member according to claim 1, further comprising a cover portion that covers an upper portion of the first water passage hole, and a gap is formed between the cover portion and the upper surface plate. A joint-embedding member.   The jointing and embedment member according to claim 1 or 2, further comprising an anchor portion extending from the bottom plate, and the anchor portion is positioned closer to the tip than the second water passage hole. A joint implant member characterized by the above.   A wall formed by engaging a joint-implanting member with a joint seam fixed to the outer mold, positioning a horizontal slit between the inner mold and the joint-embedding member, and placing concrete. In the structure of the joint part of a part, The said joint member is the joint part of Claim 1 thru | or 3, The structure of the joint part characterized by the above-mentioned.

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