JPH0342096Y2 - - Google Patents
Info
- Publication number
- JPH0342096Y2 JPH0342096Y2 JP1985068803U JP6880385U JPH0342096Y2 JP H0342096 Y2 JPH0342096 Y2 JP H0342096Y2 JP 1985068803 U JP1985068803 U JP 1985068803U JP 6880385 U JP6880385 U JP 6880385U JP H0342096 Y2 JPH0342096 Y2 JP H0342096Y2
- Authority
- JP
- Japan
- Prior art keywords
- joint
- joint groove
- caulking material
- caulking
- filled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 56
- 239000011178 precast concrete Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Sewage (AREA)
- Building Environments (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、プレキヤストコンクリート製水路等
の防水継手部に目地溝を形成し、この目地溝内に
樹脂系のコーキング材を充填する際、該コーキン
グ材に目地溝の底部において発生する偏応力を防
止するようにした目地用バツクアツプ材に関する
ものである。[Detailed description of the invention] [Industrial application field] This invention forms a joint groove in a waterproof joint of a precast concrete waterway, etc., and when filling this joint groove with a resin-based caulking material, The present invention relates to a back-up material for joints which prevents uneven stress generated in the caulking material at the bottom of the joint groove.
従来、プレキヤストコンクリート製水路等の防
水継手として、接続される両水路の接続部に形成
される目地溝内に樹脂系のコーキング材を充填す
る方法が広く行われている。
BACKGROUND ART Conventionally, as a waterproof joint for precast concrete waterways, etc., a method has been widely used in which a resin-based caulking material is filled into a joint groove formed at a joint between two waterways to be connected.
しかしこの方法は、コーキング材を目地溝内に
充填した場合、該コーキング材は左右両側面及び
底面の三面接着となるため、目地溝の底部におい
てコーキング材に偏応力が発生する。 However, in this method, when the caulking material is filled into the joint groove, the caulking material adheres to both the left and right side surfaces and the bottom surface, so that biased stress is generated in the caulking material at the bottom of the joint groove.
すなわち、第４図イに示すように、プレキヤス
トコンクリート製水路１，１を連結し、両水路の
接続部に形成された目地溝２内に樹脂系コーキン
グ材３を充填した場合、該コーキング材３は目地
溝２とその左右両側面２Ａ，２A′及び底面２Ｂ，
２B′において夫々接着されるため、コーキング
材３に同図ロに示す矢印の如き偏応力Ｐが発生す
る。 That is, as shown in FIG. 4A, when precast concrete waterways 1 and 1 are connected and a resin-based caulking material 3 is filled in a joint groove 2 formed at the connecting portion of both waterways, the caulking material 3 is the joint groove 2, its left and right sides 2A, 2A', and the bottom 2B;
Since they are bonded at 2B', a biased stress P as shown by the arrow shown in FIG.
その結果、接着面の剥離及び損傷を受け易くな
り、防水性が損なわれるといつた欠点がある。 As a result, the adhesive surface becomes susceptible to peeling and damage, resulting in disadvantages such as loss of waterproof properties.
このような欠点を解消するため、目地溝２の底
部にコーキング材３への偏応力発生防止を主目的
として、コーキング材を充填する前にコーキング
材と接着することのない材料である帯状スポンジ
などを押し込める形で使用しているものもある。 In order to eliminate these drawbacks, a band-shaped sponge or the like, which is a material that does not adhere to the caulking material, is used at the bottom of the joint groove 2, with the main purpose of preventing the generation of biased stress on the caulking material 3, before filling with the caulking material. Some are used in a way that they can be pushed in.
すなわち、第５図イに示すように、先ず目地溝
２内に例えば帯状スポンジの如きバツクアツプ材
４を押し込み、その上部にコーキング材３を充填
している。 That is, as shown in FIG. 5A, first, a back-up material 4, such as a band-shaped sponge, is pushed into the joint groove 2, and the caulking material 3 is filled on top of the back-up material 4.
この場合、コーキング材３は目地溝２の左右両
側面２Ａ，２A′の２面で接着し、且つ両接着面
積が同じであるため偏応力の発生がなく、前記の
如き欠点は解消される。 In this case, the caulking material 3 is bonded to both left and right sides 2A and 2A' of the joint groove 2, and since both bonding areas are the same, no biased stress is generated, and the above-mentioned drawbacks are eliminated.
しかし、プレキヤスト製水路１，１を据付け接
続する場合に、第５図ロのように、その継目に多
少の段違いが発生することは避けられない。
However, when installing and connecting the precast water channels 1, 1, it is inevitable that a slight difference in level will occur at the joint, as shown in FIG. 5B.
その結果、片方の接着面積２Ａ−１と、もう一
方の接着面積２A′−１とはその大きさが相違す
ることとなる。すなわち、一方の前記接着面積２
A′−１は小さくなり、最小接着面積をも確保す
ることが出来ない事態が発生する。 As a result, the bonding area 2A-1 on one side and the bonding area 2A'-1 on the other side are different in size. That is, one of the adhesive areas 2
A'-1 becomes small, and a situation occurs in which even the minimum bonding area cannot be secured.
本考案は、上記のような従来の問題点を解決す
るために成されたものであり、その要旨は、プレ
キヤストコンクリート製水路等の継手部に目地溝
を形成し、該目地溝にバツクアツプ材を次いでコ
ーキング材を充填するようにした防水目地におい
て、前記バツクアツプ材をプラスチツク等から成
る変形可能な断面Ｕ字形に形成するとゝもに、そ
の開口部側から両脚が前記目地溝内の底部に衝当
するまで挿入し、更に該バツクアツプ材の上部に
コーキング材を充填するようにしたことを特徴と
する目地用バツクアツプ材にある。
The present invention was developed in order to solve the above-mentioned conventional problems, and its gist is to form a joint groove in a joint of a precast concrete waterway, etc., and to insert back-up material into the joint groove. Next, in the waterproof joint filled with caulking material, the back-up material is made of plastic or the like and has a deformable U-shape in cross section, and both legs are pushed against the bottom of the joint groove from the opening side. This back-up material for joints is characterized in that the back-up material is inserted until it hits the joint, and then the upper part of the back-up material is filled with caulking material.
以下、本考案を第１図乃至第３図に示す実施例
により詳細に説明するに、本考案の構成は、第１
図に示すようなプレキヤストコンクリート製水路
部材１，１を連結して水路を形成する場合、第３
図イに図示すように、両水路１の接合部分に目地
溝２，２Ａ，２Ｂを形成し、この目地溝２内にコ
ーキング材３を充填するのであるが、前述したよ
うに、充填したコーキング材３に偏応力が発生す
るのを防止するため、コーキング材３を充填する
前に、第２図に示すような断面Ｕ字形（同図イ）
または断面字形（同図ロ）のプラスチツク等か
ら成る変形可能なバツクアツプ材５を目地溝２内
に挿入する。すなわち、第３図イに示すように、
バツクアツプ材５をその開口部側から両脚５Ｂ，
５Ｂがそれぞれ前記目地溝２内の底部２Ｂ，２
B′に衝当するまで押し込む。
Hereinafter, the present invention will be explained in detail with reference to the embodiments shown in FIGS. 1 to 3.
When forming a waterway by connecting precast concrete waterway members 1 and 1 as shown in the figure, the third
As shown in Figure A, joint grooves 2, 2A, and 2B are formed at the joint of both water channels 1, and caulking material 3 is filled in the joint grooves 2. In order to prevent uneven stress from occurring in the material 3, before filling the caulking material 3, a U-shaped cross section as shown in Fig. 2 (A in the same figure) is prepared.
Alternatively, a deformable back-up material 5 made of plastic or the like having a cross-sectional shape (FIG. 2B) is inserted into the joint groove 2. That is, as shown in Figure 3A,
From the opening side of the back up material 5, both legs 5B,
5B are the bottom parts 2B, 2 in the joint groove 2, respectively.
Push it in until it hits B'.
そして、このバツクアツプ材５の上面５Ａの上
部目地溝２内にコーキング材３を充填する。 Then, the caulking material 3 is filled into the upper joint groove 2 on the upper surface 5A of the backup material 5.
而して、コーキング材３は目地溝２の左右両側
面２Ａ，２A′と夫々同じ接着面積で接着し、底
面、即ちバツクアツプ材５の上面５Ａとは接着し
ないので、コーキング材３に偏応力は発生しな
い。 Therefore, the caulking material 3 adheres to the left and right sides 2A, 2A' of the joint groove 2 with the same bonding area, and does not adhere to the bottom surface, that is, the top surface 5A of the back-up material 5, so that the caulking material 3 has no biased stress. Does not occur.
しかし、接続する両水路１，１の継目に段差が
生じ、この段差が目地溝２の左右両側面の接着面
積を変え、一方の側面が最小限の接着面積をも確
保出来ないことがある。このような場合には、第
３図ロに示すように、バツクアツプ材５をその両
脚５Ｂ，５Ｂが夫々目地溝２内の底面２Ｂ，２
B′と衝当するまで押し込む。 However, a level difference occurs at the joint between the connecting water channels 1, 1, and this level difference changes the adhesion area on both the left and right sides of the joint groove 2, and it may not be possible to secure even the minimum adhesion area on one side. In such a case, as shown in FIG.
Push it in until it hits B'.
その結果、バツクアツプ材５は弾性変形して目
地溝２内に収まり、その上面５Ａの上方における
左右の接着面積２Ａ−１，２A′−１はそれぞれ
均等の接着面積を形成することになり、最小限の
接着面積は完全に確保することができる。 As a result, the backup material 5 is elastically deformed and fits into the joint groove 2, and the left and right adhesion areas 2A-1 and 2A'-1 above the upper surface 5A form equal adhesion areas, and the minimum The limited adhesion area can be completely secured.
本考案に係る目地用バツクアツプ材は、上記の
ように、プレキヤストコンクリート製水路等の継
手部に目地溝を形成し、該目地溝にバツクアツプ
材を次いでコーキング材を充填するようにした防
水目地において、前記バツクアツプ材をプラスチ
ツク等から成る変形可能な断面Ｕ字形に形成する
とゝもに、その開口部側から前記目地溝内に挿入
し、更に該バツクアツプ材の上部にコーキング材
を充填するようにした構成であるから、水路を据
付けた時に継目に段差が生じても、その段差に応
じたＵ字形のバツクアツプ材の変形によつて左右
両側面に同一の接着面積が確保でき、継手部の防
水機能が充分確保できるといつた効果がある。
As described above, the back-up material for joints according to the present invention is used for waterproof joints in which a joint groove is formed in a joint of a precast concrete waterway, etc., and the joint groove is filled with a back-up material and then a caulking material. The back-up material is made of plastic or the like and has a deformable U-shaped cross section, and is inserted into the groove from the opening side, and the upper part of the back-up material is filled with caulking material. Because of this structure, even if there is a level difference at the joint when the waterway is installed, the U-shaped backup material deforms according to the level difference, ensuring the same adhesive area on both left and right sides, and the waterproof function of the joint part. This has the effect of ensuring a sufficient amount of
第１図は水路部材の正面図、第２図イ及びロは
夫々本考案に係るバツクアツプ材の実施例を示す
部分斜視図、第３図イ及びロは本考案に係るバツ
クアツプ材を目地溝内に埋設した状態の使用状態
説明断面図、第４図イ及びロは、夫々従来例のコ
ーキング材を使用した場合の断面図とその偏応力
を示す説明図、第５図イ及びロは夫々従来例のバ
ツクアツプ材とコーキング材を使用した場合の断
面図である。
１……プレキヤストコンクリート製水路、２…
…目地溝、２Ａ，２A′……同側面、２Ｂ，２
B′……同底面、３……コーキング材、５……バ
ツクアツプ材、５Ｂ……同脚。
Fig. 1 is a front view of the water channel member, Fig. 2 A and B are partial perspective views showing examples of the back-up material according to the present invention, and Fig. 3 A and B are the back-up material according to the present invention in the joint groove. Fig. 4 A and B are cross-sectional views and explanatory diagrams showing the biased stress when conventional caulking material is used, and Fig. 5 A and B are the conventional FIG. 3 is a cross-sectional view when using an example backup material and caulking material. 1... Precast concrete waterway, 2...
...Gutter groove, 2A, 2A'...Same side, 2B, 2
B'...same bottom surface, 3...caulking material, 5...back up material, 5B...same leg.
Claims (1)
目地溝を形成し、該目地溝にバツクアツプ材を次
いでコーキング材を充填するようにした防水目地
において、前記バツクアツプ材をプラスチツク等
から成る変形可能な断面Ｕ字形に形成するとゝも
に、その開口部側から前記目地溝に挿入し、更に
該バツクアツプ材の上部にコーキング材を充填す
るように構成したことを特徴とする目地用バツク
アツプ材。 In a waterproof joint in which a joint groove is formed in a joint of a precast concrete waterway, etc., and the groove is filled with a back-up material and then a caulking material, the back-up material is made of plastic or the like and has a deformable U-shaped cross section. A back-up material for joints, characterized in that the back-up material for joints is formed so as to be inserted into the joint groove from the opening side thereof, and furthermore, the upper part of the back-up material is filled with caulking material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985068803U JPH0342096Y2 (en) | 1985-05-10 | 1985-05-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985068803U JPH0342096Y2 (en) | 1985-05-10 | 1985-05-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61184730U JPS61184730U (en) | 1986-11-18 |
| JPH0342096Y2 true JPH0342096Y2 (en) | 1991-09-04 |
Family
ID=30603884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985068803U Expired JPH0342096Y2 (en) | 1985-05-10 | 1985-05-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0342096Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5850185B2 (en) * | 1977-10-11 | 1983-11-09 | 株式会社神戸製鋼所 | Degassing method and device for synthetic resin injection molding machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5850185U (en) * | 1981-09-30 | 1983-04-05 | 百瀬コンクリ−ト工業株式会社 | U-shaped groove connector |
-
1985
- 1985-05-10 JP JP1985068803U patent/JPH0342096Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5850185B2 (en) * | 1977-10-11 | 1983-11-09 | 株式会社神戸製鋼所 | Degassing method and device for synthetic resin injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61184730U (en) | 1986-11-18 |
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