JPS6320782Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention comprises a pair of joint bars attached to the inner surface of the formwork, and a partition member held by the opposing joint bars. This invention relates to a joint material for insulating wall bodies, which can insulate bodies from columns and improve the earthquake resistance of buildings, can reliably absorb the expansion and contraction of concrete, form completely waterproof joints, and has excellent workability.

In recent years, in order to improve the earthquake resistance of reinforced concrete buildings, seismic construction has been carried out that cuts the edges between the walls and the columns, making the columns more resilient to earthquakes and preventing buildings from being destroyed due to column breakage. I'm starting to be able to do it.

The purpose of the present invention is to provide a wall insulation joint material that can be used in such earthquake-resistant construction, and one embodiment thereof will be described below based on the drawings.

1 and 2, the wall insulation joint material 1 of the present invention is held by a pair of joint bars 3a, 3b attached to the inner surfaces of formworks 2a, 2b, and both joint bars 3a, 3b. A partition member 5 is provided.

The partition member 5 is a pair of partition plates 6, 6 placed in parallel with each other at a relatively small interval, and each end portion of the joint plate 1 has elastic portions 7, 9 made of soft synthetic resin at the longitudinal center thereof.
A hollow portion 12 formed into a flat long plate with a rectangular cross section and integrally connected by 0 and 11 is filled with a foam 13 that is, for example, a synthetic resin foam, and one end of the partition plates 6 and 6 is filled. In the part 6a, a pair of side plates 15, 15 whose tips widen toward the formwork are integrally provided on both sides of the extendable part 7 of the joint plate 10, while the other end 6b of the partition plates 6, 6 In this case, a fixing overhang piece 1 having anchor protrusions 16 at the tips thereof, which protrude toward the outdoors, is provided on both sides thereof.
7 and 17 are formed in a protruding manner, and are located on both sides of the extensible portion 9, and a pair of side plates 19 and 19 whose tips are slightly widened toward the formwork 2b are integrally connected to the joint plate 11. . The partition member 5 is formed as a synthetic resin extrusion molded body, the extensible parts 7 and 9 are made of soft vinyl chloride, and the remaining parts are made of hard vinyl chloride. In this embodiment, the hollow portion 12 of the partition member 5 is reinforced with the reinforcing piece 20, and the fixing overhang pieces 17, 1
Nail holes 21 are bored in 7 at a predetermined pitch.

The joint bar 3a has its tip end portion 3a1,
The joint bar 3b has a hollow trapezoidal shape that can be fitted into the fitting groove 22 formed by the side plates 15, 15 and the connecting plate 10, and the joint bar 3b has a tip end portion 3b1,
It has a hollow trapezoidal shape that can be fitted into the fitting groove 23 formed by the side plates 19, 19 and the connecting plate 11, and both are formed as synthetic resin extrusion molded bodies. The joint bars 3a and 3b are in contact with the inner surfaces of the formworks 2a and 2b at their bottom surfaces, respectively, and are made using nails that penetrate nail holes 25 drilled at a predetermined pitch so as to penetrate through the top and bottom surfaces. , are fixed to the formworks 2a, 2b.

Next, the method of forming a joint using the wall insulation joint material 1 of the present invention will be explained based on FIGS. 2 and 3.

First, in the vicinity of the boundary between the pillar portion 26 and wall portion 27 of the opposed formworks 2a, 2b,
(b) Joint bars 3a and 3b are nailed in advance to the opposing portions of the inner surface along the vertical direction. Thereafter, for example, the joint bar 3b nailed to the outdoor formwork 2b is fitted into the fitting groove 23 of the partition member 5, and the fixing overhang pieces 17, 17 are nailed to the formwork 2b. After that, the formwork 2a on the indoor side is erected, and the joint bar 3a and the fitting groove 22 are fitted into each other. In order to increase the strength of the wall insulation joint material 1 against concrete casting pressure, joint bars 3a, 3b, partition member 5, formwork 2a,
The wall insulation joint material 1 and the formworks 2a, 2b are tightened using reinforcing rods 29 passing through the walls 2b. In this state, when concrete is cast between the formworks 2a and 2b and then demolded, the column 30 and the wall 31 are insulated by the partition member 5, as shown in FIG. Note that the joint grooves 32 that occur on the wall surface on the indoor side shall be filled with mortar, etc. as appropriate, and then cross-finished, etc.
3 is filled with a sealing material 35.

However, the pillar 30 and the wall 31 are insulated by the partition member 5 as described above, and furthermore, the left and right partition plates 6, 6 of the partition member 5 are connected via the expandable parts 7, 9, and The hollow portion 12 is filled with a synthetic resin foam 13, and the partition member 5 is configured to be expandable and contractible in the width direction of the joint, so that vibrations during an earthquake are not applied to the pillars 30 and walls 31. However, the vibration in the wall thickness direction applied to the wall body 31 does not act on the column 30, and the vibration in the wall width direction does not affect the partition member 5.
absorbed more effectively. As a result, the wall 31
Therefore, the stress of the column 3 does not act on the column 30.
It is possible to give tenacity to the pillar 30 and prevent the building from being destroyed due to breakage of the pillar 30.

Furthermore, as described above, since the partition member 5 is expandable and contractable in the width direction of the joint, the partition member 5 expands and contracts in response to the expansion and contraction of the joint due to the expansion and contraction of the concrete, causing cracks to occur in the joint. It is possible to reliably prevent this and ensure that the joint area is completely protected from rain. Moreover, since the joint groove 33 on the outdoor side exists with the tips 19a, 19b of the side plates 19, 19 retracted inward from the wall surface 37, the partition member 5 is made of concrete due to deterioration of the expandable parts 7, 9. Even if the sealing material 3 does not sufficiently follow the expansion and contraction of the concrete and a gap is created due to separation between the side plates 19, 19 and the concrete, the sealing material 3
5, the gap can be watertight and the joint can be protected from rain. Moreover, since the fixing overhang pieces 17, 17 also function as water stop plates, even if rainwater enters through the gap, the intruding water can be absorbed by the fixing overhang pieces 17, 17. Water will definitely be shut off.

Furthermore, since the hollow part 12 of the partition member 5 is filled with foam 13, the joint part between the column 30 and the wall body 31 is sufficiently sound-insulated and heat-insulated, and the inside of the hollow part 12 is Condensation is also prevented.

In addition, in this embodiment, the fixing overhang piece 17,
17 has anchor protrusions 16, 16 at its tip, so that particularly severe expansion and contraction of concrete on the outdoor side can be reliably transmitted to the partition member 5 without causing separation between the concrete and the partition member 5. can. In addition, as shown by the dashed line in FIG. 3, when the anchor protrusions 39, 39 are formed to protrude from the connecting plate 10, the expansion and contraction of the concrete can be transmitted to the partition member 5 more reliably.

As mentioned above, the wall insulation joint material of the present invention is
As a result of comprising a pair of joint bars and a partition member held by the opposing joint bars, the walls between the columns in a reinforced concrete building are insulated from the columns, and the earthquake resistance of the building is improved. To surely absorb the expansion and contraction of concrete, form a completely waterproof joint part, and also to effectively insulate and heat the joint part between a column and a wall. Furthermore, after installing the joint bar in the formwork, the partition member should not be fixed to the formwork.
This is done via a fixing overhang piece at one end of the partition member, and the other end of the partition member is simply fitted into the fitting groove formed at the other end with the joint bar. Therefore, it is possible to efficiently fix the partition member to the formwork without requiring much effort.

In the wall insulating joint material of the present invention, substantially the entire joint plate of the partition member may be made of soft synthetic resin. Further, the joint bar located on the indoor side may be formed so that the entire joint can be fitted between both side plates of the partition member, as shown by the dashed line in FIG. Furthermore, the wall insulation joint material of the present invention can also be used for insulation between partition walls and columns.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention;
FIG. 2 is a cross-sectional view showing its usage, and FIG. 3 is a cross-sectional view showing a state in which a column and a wall are insulated using the wall insulating joint material of the present invention. 1... Wall insulation joint material, 2a, 2b... Formwork, 3a, 3b... Joint bar, 5... Partition member, 6
...Partition plate, 7, 9...Extendable part, 10, 11...
Joint plate, 12...Hollow part, 13...Foam, 15...
...Side plate, 17...Fixing overhang piece, 19...Side plate.

Claims (1)

[Scope of utility model registration request] A pair of joint bars 3a, 3b installed oppositely on the inner surfaces of opposed formworks 2a, 2b, and the joint bars 3a,
3b, and the partition member 5 has a pair of partition plates 6, 6 arranged in parallel with a space between each other, and at least the longitudinal center portion thereof is made of soft synthetic resin. Joint plate 1 with elastic parts 7 and 9
A foam 13 is filled in the hollow part 12 which is integrally connected by 0 and 11, and the partition plate 6,
At one end 6a of 6, the elastic part 7 of the connecting plate 10
A pair of side plates 1 on both sides, the tips of which widen toward the end.
5 and 15 are integrally arranged facing the formwork to form a fitting groove 22 between the opposing side plates 15 and 15 in which the joint bar 3a can be fitted. In the side part 6b, fixing overhang pieces 1 are provided on both sides thereof.
7 and 17 to protrude, and the elastic part 9
A pair of side plates 19, 19 whose tips are widened towards the formwork are integrally provided on the joint plate 11 or on the fixing overhang pieces 17, 17, facing the formwork. A fitting groove 23 into which the joint bar 3b can be fitted is formed between the opposing side plates 19, 19, and the joint bar located on the outdoor side of the joint bars 3a, 3b is located at the tip of the side plates 19, 19. Parts 19a, 19a
A joint material for wall insulation, characterized in that it is formed so that it can be fitted into a fitting groove 23 between both side plates 19, 19 so that it remains in a retracted state from the inner surface of the formwork.