JPH0354216B2 - - Google Patents
Info
- Publication number
- JPH0354216B2 JPH0354216B2 JP6016784A JP6016784A JPH0354216B2 JP H0354216 B2 JPH0354216 B2 JP H0354216B2 JP 6016784 A JP6016784 A JP 6016784A JP 6016784 A JP6016784 A JP 6016784A JP H0354216 B2 JPH0354216 B2 JP H0354216B2
- Authority
- JP
- Japan
- Prior art keywords
- waterproof sheet
- concrete
- protrusions
- formwork
- waterproofing
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Building Environments (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【発明の詳細な説明】 発明の技術分野 本発明は地下構造物の先防水工法に関する。[Detailed description of the invention] Technical field of invention The present invention relates to a waterproofing method for underground structures.
発明の技術的背景とその問題点
従来、地下構造物の防水工法とし予め地下構造
物の外側型枠内面に防水シートを仮着し、しかる
後、内外の型枠の間にコンクリートを打設するよ
うな先防水工法が提案されている。このような先
防水工法に於ては、防水シートと後打ちコンクリ
ートとの接着力は殆んど期待できず、従つて防水
シートの損傷部や防水シート継目の欠陥部より地
下水が侵入すると、侵入水は防水シートと後打ち
コンクリートとの界面を走り広範囲に漏水を生ず
る。このような問題は例えば防水シートを後打ち
コンクリートに対し、予め防水シート面に形成し
た粘着層を介して接着するようにすれば、ある程
度解決できるが、粘着層の形成は作業者の衣服に
粘着するなどの作業上の問題に加え塵埃付着によ
る接着力低下の問題があり、またこのような問題
を解決するために粘着層を水溶性被膜で覆うと、
防水シートの製造コストひいては防水工事費の高
騰を招くことになり、いずれも好ましい解決策と
いえない。Technical background of the invention and its problems Conventionally, as a waterproofing method for underground structures, a waterproof sheet is temporarily attached to the inner surface of the outer formwork of the underground structure in advance, and then concrete is poured between the inner and outer formwork. A similar waterproofing method has been proposed. In this type of pre-waterproofing construction method, there is little expectation of adhesion between the waterproof sheet and the post-cast concrete, and therefore, if groundwater enters through damaged parts of the waterproof sheet or defects in the seams of the waterproof sheet, there is a risk of intrusion. Water runs across the interface between the waterproof sheet and the post-cast concrete, causing widespread leakage. This kind of problem can be solved to some extent by, for example, adhering the waterproof sheet to the post-cast concrete through an adhesive layer that has been formed on the surface of the waterproof sheet in advance, but the formation of the adhesive layer may cause it to stick to the worker's clothing. In addition to operational problems such as drying, there is also the problem of reduced adhesion due to dust adhesion.To solve these problems, covering the adhesive layer with a water-soluble film
This will lead to an increase in the manufacturing cost of the tarpaulin sheet and, in turn, the cost of waterproofing work, so neither is a desirable solution.
発明の目的
本発明はこのような従来の問題を一掃すること
を目的としてなされたものである。Purpose of the Invention The present invention has been made with the aim of eliminating such conventional problems.
発明の構成
本発明は、表面に多数の突起物が分散突出され
た防水シートを、その裏面に於て地下構造物の外
型枠の内面に仮着した後、外型枠と内型枠の間に
コンクリートを打設することを特徴とする地下構
造物の先防水工法に係る。Structure of the Invention The present invention involves temporarily attaching a waterproof sheet having a large number of protrusions distributed on the surface to the inner surface of the outer formwork of an underground structure on the back side, and then attaching the waterproof sheet to the inner surface of the outer formwork of an underground structure. This relates to a pre-waterproofing method for underground structures, which is characterized by pouring concrete between them.
発明の実施例
以下に本発明の実施例を添附図面にもとづき説
明すると次の通りである。Embodiments of the Invention Examples of the present invention will be described below with reference to the accompanying drawings.
第１図は本発明工法の一実施状況を示し、表面
に多数の突起物１を分散突出した例えばゴム製の
防水シート２を、その裏面に於て地下構造物の外
型枠３の内面に常法通り例えば接着剤４の適用の
もとに接着した後、コンクリート５を内外の型枠
３，３′の間に打設するものである。 FIG. 1 shows a state in which the construction method of the present invention is implemented, in which a waterproof sheet 2 made of, for example, rubber and having a large number of protrusions 1 distributed on its surface is placed on the inner surface of an outer formwork 3 of an underground structure on the back side. After gluing in the usual manner, for example by applying an adhesive 4, concrete 5 is poured between the inner and outer forms 3, 3'.
本発明工法によれば、防水シート２表面の突起
物１がコンクリート５内にくい込むので、防水シ
ート２とコンクリート５は突起物１の部分で強固
に結合され、全体として粘着剤を適用する場合と
変らないような結合密着状態が得られる。従つて
仮に防水シート２やその継目の部分に損傷や欠陥
部を生じても、防水シート２とコンクリート５の
界面部分には殆んど水が侵入することがなくな
り、粘着剤を適用する場合と変らない良好な防水
効果が得られる。更に防水シート２とコンクリー
ト５の結合一体化が突起物１のくい込みにより達
成されるので、コンクリート５の打設圧をあまり
受けないような型枠上端部に於ても、大きな打設
圧を受ける下部と変らない結合状態を確保でき、
型枠の上下部とも変らない防水効果が得られる。 According to the construction method of the present invention, the protrusions 1 on the surface of the waterproof sheet 2 sink into the concrete 5, so the waterproof sheet 2 and the concrete 5 are firmly connected at the protrusions 1. A state of bonding and adhesion that does not change can be obtained. Therefore, even if damage or defects occur in the waterproof sheet 2 or its joints, almost no water will enter the interface between the waterproof sheet 2 and the concrete 5, making it difficult to apply adhesive. A good waterproof effect that does not change can be obtained. Furthermore, since the waterproof sheet 2 and the concrete 5 are integrated into one body by the insertion of the protrusions 1, even the upper end of the formwork, which does not receive much of the pouring pressure of the concrete 5, is subjected to a large pouring pressure. It can ensure the same bonding condition as the lower part,
The same waterproofing effect can be obtained for both the top and bottom of the formwork.
第２図乃至第４図は、防水シート２の拡大断面
図を示し、突起部１には、第２〜３図に示すよう
にアンカー部１ａを形成できる。また第４〜６図
に示すように、突起物１を６角輪（第５図）や四
角輪（第６図）に形成して、これを集合しておけ
ば、防水シート２の損傷部等よりコンクリート５
との界面部分に水が侵入しても、これはブロツク
ごと止まり、周辺部への侵入水の拡がりを防止で
きる。 2 to 4 show enlarged sectional views of the waterproof sheet 2, and the protrusion 1 can be formed with an anchor portion 1a as shown in FIGS. 2 to 3. Furthermore, as shown in Figs. 4 to 6, if the protrusions 1 are formed into hexagonal rings (Fig. 5) or square rings (Fig. 6) and are gathered together, the damaged part of the waterproof sheet 2 can be Concrete 5 from etc.
Even if water enters the interface with the block, the water will stop at the block and prevent the water from spreading to the surrounding area.
突起物１の分散密度はあまりに粗になるとコン
クリート５との結合面で好ましくない結果を招く
虞れがあるので、例えば第２〜３図に示すような
突起物１である場合には突起物１の大きさにもよ
るが通常は単位面積当り10000〜1000000個／m2好
ましくは100000〜400000個／m2程度が適当であ
る。また第４〜６図に示されるような輪状のもの
では、半径が20〜50mm程度が適当である。 If the distribution density of the protrusions 1 becomes too coarse, it may lead to unfavorable results on the bonding surface with the concrete 5. For example, when the protrusions 1 are as shown in FIGS. Although it depends on the size, the appropriate number is usually about 10,000 to 1,000,000 pieces/ m2 , preferably about 100,000 to 400,000 pieces/ m2 . Further, in the case of a ring shape as shown in FIGS. 4 to 6, a radius of about 20 to 50 mm is appropriate.
発明の効果
本発明工法に於ては、防水シートが突起物を介
してコンクリートに結合されるので、防水シート
に損傷を生じても地下水の侵入は殆んど損傷部の
みにとどまり、高度の防水効果を確保し得ると共
に、防水シートには単に突起物を形成するだけで
よいので、粘着層を形成したり更には該層を水溶
性被膜により覆う従来工法より遥かに防水シート
は安価となり、防水シートの製造コストひいては
工事費の高騰を招くことなしに、このような防水
効果の向上を達成し得る特徴を有する。Effects of the invention In the construction method of the present invention, the waterproof sheet is bonded to the concrete through the protrusions, so even if the waterproof sheet is damaged, underground water will only enter the damaged area, resulting in a high degree of waterproofing. In addition to ensuring its effectiveness, since it is sufficient to simply form protrusions on the tarpaulin sheet, the tarpaulin sheet is much cheaper than the conventional method of forming an adhesive layer or covering the layer with a water-soluble film. It has the characteristic that such an improvement in waterproofing effect can be achieved without causing an increase in the manufacturing cost of the sheet or the construction cost.
第１図は本発明工法の一実施状況を一部を省略
して示す縦断面図、第２図、第３図及び第４図は
本発明工法に用いられる防水シートの数列を示す
拡大断面図、第５図及び第６図は第４図に示され
た防水シートの突起物の形成状況を示す平面図で
ある。
図に於て、１は突起物、２は防水シート、３，
３′は型枠、４は接着剤、５はコンクリートであ
る。
Fig. 1 is a vertical sectional view with some parts omitted to show how the method of the present invention is implemented, and Figs. 2, 3, and 4 are enlarged sectional views showing several rows of waterproof sheets used in the method of the present invention. , FIG. 5, and FIG. 6 are plan views showing how protrusions are formed on the waterproof sheet shown in FIG. 4. In the figure, 1 is a protrusion, 2 is a waterproof sheet, 3,
3' is the formwork, 4 is the adhesive, and 5 is the concrete.
Claims (1)
ートを、その裏面に於て地下構造物の外型枠の内
面に仮着した後、外型枠と内型枠の間にコンクリ
ートを打設することを特徴とする地下構造物の先
防水工法。1 After temporarily attaching a waterproof sheet with many protrusions distributed and protruding on its surface to the inner surface of the outer formwork of the underground structure on the back side, concrete is poured between the outer formwork and the inner formwork. A pre-waterproofing method for underground structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6016784A JPS60203740A (en) | 1984-03-27 | 1984-03-27 | Preventive waterproofing method for underground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6016784A JPS60203740A (en) | 1984-03-27 | 1984-03-27 | Preventive waterproofing method for underground structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60203740A JPS60203740A (en) | 1985-10-15 |
| JPH0354216B2 true JPH0354216B2 (en) | 1991-08-19 |
Family
ID=13134335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6016784A Granted JPS60203740A (en) | 1984-03-27 | 1984-03-27 | Preventive waterproofing method for underground structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60203740A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63103128A (en) * | 1986-10-21 | 1988-05-07 | Ohbayashigumi Ltd | Water-proofing work for outer wall |
| JPH0249820A (en) * | 1988-08-12 | 1990-02-20 | Ozawa Concrete Kogyo Kk | Basement walls and their construction methods |
| JPH0617852Y2 (en) * | 1989-05-30 | 1994-05-11 | 池田物産株式会社 | Tarpaulin for civil engineering |
-
1984
- 1984-03-27 JP JP6016784A patent/JPS60203740A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60203740A (en) | 1985-10-15 |
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