JPH0438400A - Method for preventing sagging of tunnel waterproof sheet - Google Patents

Method for preventing sagging of tunnel waterproof sheet

Info

Publication number
JPH0438400A
JPH0438400A JP2147092A JP14709290A JPH0438400A JP H0438400 A JPH0438400 A JP H0438400A JP 2147092 A JP2147092 A JP 2147092A JP 14709290 A JP14709290 A JP 14709290A JP H0438400 A JPH0438400 A JP H0438400A
Authority
JP
Japan
Prior art keywords
waterproof sheet
segment
tunnel
steel plate
sagging
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.)
Pending
Application number
JP2147092A
Other languages
Japanese (ja)
Inventor
Akio Ikuta
生田 明男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KFC Ltd
Original Assignee
KFC Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KFC Ltd filed Critical KFC Ltd
Priority to JP2147092A priority Critical patent/JPH0438400A/en
Publication of JPH0438400A publication Critical patent/JPH0438400A/en
Pending legal-status Critical Current

Links

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  • Lining And Supports For Tunnels (AREA)

Abstract

PURPOSE:To prevent a tunnel waterproof sheet from sagging by installing steel plate on a tunnel segment, on which a waterproof sheet is placed, and securing the waterproof sheet to the steel plate with magnets having an insulating cap. CONSTITUTION:To a segment 1 is installed a steel plate 2 extending in the piece direction of segment 1 (transverse direction of tunnel). For installation, holes are made at specified positions on the steel plate 2, and rods 5 with a thermally weldable disc are inserted to connect them to sleeve-shaped inserts 6 embedded in the segment 1. Next, a waterproof sheet 3 is placed over the steel plate 2, and welded to the thermally weldable disc 4. Then, the waterproof sheet 3 is fixed to the steel plate at required positions with magnets having an insulating cap 7. This constitution prevents the waterproof sheet 3 placed on the segment 1 from sagging.

Description

【発明の詳細な説明】 産業上の利用分野 本発明はトンネル防水シートの垂れ回避施工法、特に、
!・ンネルの一次覆工としてのセグメンi・に張られる
防水シートの垂れ回避施工法に関する。
[Detailed Description of the Invention] Industrial Application Field The present invention relates to a construction method for avoiding sagging of a tunnel waterproof sheet, in particular,
!・Regarding a construction method to avoid sagging of the waterproof sheet applied to segment i as the primary lining of the tunnel.

トンネルのセグメントに張った防水シートは、垂れてい
ないことを望まれる。垂れていると、二次覆工における
配筋時などに、鉄筋などが引っ掛って垂れた防水シート
を破損することがある。
It is hoped that the tarpaulin placed over the tunnel segments will not sag. If the waterproof sheet is sagging, reinforcing bars may get caught and damage the sagging waterproof sheet during reinforcing in secondary lining.

一方、トンネルの一次覆工としてのセグメント及びこれ
に張られた防水シートは、釘やアンカーが打込まれない
ことが好ましいのは自明である。
On the other hand, it is obvious that it is preferable that no nails or anchors be driven into the segments serving as the primary lining of the tunnel and the waterproof sheet stretched thereon.

従来の技術とその問題点 従来、トンネルのセグメントに防水シートを張るのに、
これ等に対する釘、アンカーの打込みなしにこれを行う
には、セグメントにナツト型などのスリーブ状インサー
)・を埋設しておき、 Ddjに熱溶着性ジスク付きの
ロッドをインサートに結合し、熱溶着性ジスクに防水シ
ートを溶接する仕様がとられている。この方法では、セ
グメントのピース方向(トンネルの横断面方向)に並ぶ
継手ブロックの関係上、インサートを防水シートの垂れ
回避に即応する個所に配置できず、前記熱溶着性ジスク
付きロッドをして、防水シートの垂れ回避に寄与せしめ
得ない。
Conventional technology and its problems Traditionally, when applying tarpaulin to tunnel segments,
To do this without driving nails or anchors into these, bury a sleeve-shaped insert (such as a nut type) in the segment, connect a rod with a heat-welding disc to the insert in the Ddj, and heat-weld it. The specifications are such that a waterproof sheet is welded to the disc. In this method, because of the joint blocks arranged in the segment piece direction (the cross-sectional direction of the tunnel), it is not possible to place the insert at a location that can immediately prevent the waterproof sheet from sagging. It cannot contribute to avoidance of dripping of the tarpaulin sheet.

即ち従来、セグメント及び防水シートへの釘、アンカー
の打込みなしに、トンネルのセグメントに防水シートを
張る工法においては、防水シートの垂れ回避を図り得る
までに至っていないのが実状である。
That is, in the conventional construction method of covering a tunnel segment with a waterproof sheet without driving nails or anchors into the segments and the waterproof sheet, the actual situation is that it has not been possible to prevent the waterproof sheet from sagging.

本発明の目的は、トンネルのセグメントに張られた防水
シートの垂れ回避を旨く達成できるようにするにある。
SUMMARY OF THE INVENTION An object of the present invention is to effectively avoid sagging of a waterproof sheet stretched over a tunnel segment.

問題点を解決するための手段 上記目的を達成するために、本発明は次の構成をとって
いる。
Means for Solving the Problems In order to achieve the above object, the present invention has the following configuration.

即ち、本発明はトンネルのセグメントに防水シートを張
るに際し、セグメントに、セグメントのピース方向に延
びる鉄板を取付け、その上から防水シートを張り、該防
水シートを絶縁性キャップ付き磁石により前記鉄板に定
着せしめることを特徴とするトンネル防水シートの垂れ
回避施工法に係る。    実施例 次に、本発明の実施態様例を示す感付図面を参照して、
本発明を説明する。
That is, when applying a waterproof sheet to a tunnel segment, the present invention attaches an iron plate extending in the direction of the piece of the segment to the segment, applies the waterproof sheet over it, and fixes the waterproof sheet to the iron plate using a magnet with an insulating cap. The present invention relates to a construction method for avoiding sagging of a tunnel waterproof sheet, which is characterized by the following: EXAMPLES Referring now to the accompanying drawings showing examples of embodiments of the present invention,
The present invention will be explained.

トンネルの一次覆工としてのセグメント(1)に、セグ
メントのピース方向(トンネルの横断面方向)に延びる
鉄板(2)を取付ける。セグメント(1)に対する鉄板
(2)の取付けは、セグメント(1)に防水シート(3
)を張るのに使用する熱溶着性ジスク(4)を一端に有
するロッド(5)による仕様を有利に適用できる。ロッ
ド(5)による仕様の鉄板取付けは、詳細には、鉄板(
2)の定位置に穿設された穴に熱溶着性ジスク(4)付
きロッド(5)を挿通し、セグメント(1)に埋設され
たスリーブ状インサート(6)に該ロッド(5)を相互
のねじ結合或いは結合材または戻り止めアンカー形式に
より結合する仕様である。
An iron plate (2) extending in the piece direction of the segment (in the cross-sectional direction of the tunnel) is attached to the segment (1) serving as the primary lining of the tunnel. To attach the steel plate (2) to the segment (1), attach the waterproof sheet (3) to the segment (1).
) can be advantageously applied with a rod (5) having at one end a heat-weldable disc (4) used for tensioning. For details, please refer to the specifications for installing the steel plate using the rod (5).
Insert the rod (5) with heat-welding disk (4) into the hole drilled in the fixed position of 2), and insert the rod (5) into the sleeve-like insert (6) embedded in the segment (1). It is designed to be connected by a screw connection, a binding material, or a detent anchor type.

こうして、セグメント(1)に鉄板(2)を取付けた状
態下でセグメント(1)に定着された熱溶着性ジスク(
4)に防水シー)−(3)を溶接する。ここに、防水シ
ート(3)はセグメント(1)に対し、セグメントのピ
ース方向に延びる鉄板(2)の上から張られることにな
る。
In this way, with the steel plate (2) attached to the segment (1), the heat-welding disc (
Weld the waterproof sheath)-(3) to 4). Here, the waterproof sheet (3) is applied to the segment (1) from above the iron plate (2) extending in the direction of the piece of the segment.

セグメント(1)に張った防水シート(3)は、絶縁性
例えばプラスチックのキャップ(7)付き磁石(8)に
より所要個所を前記鉄板(2)に定着せしめる。この定
着で、セグメント(1)に張った防水シー ) DJの
垂れ回避が達成される。その防水シート垂れ回避の態様
が第1図に実線で示されている。
The waterproof sheet (3) stretched over the segment (1) is fixed to the iron plate (2) at required points by a magnet (8) with an insulating cap (7) made of, for example, plastic. With this fixation, it is possible to avoid dripping of the waterproof sheet (DJ) stretched over the segment (1). The manner in which the waterproof sheet is prevented from sagging is shown in solid lines in FIG.

第1図で鎖線は、従来仕様の即ち鉄板(2)及び磁石(
8)を省略した形での防水シート張り施工による、防水
シートの垂れ下りの概要を示している。
In Figure 1, the chain lines indicate the conventional specifications, namely the iron plate (2) and the magnet (
This figure shows an overview of the sagging of the tarpaulin sheet when the tarpaulin sheet is installed with 8) omitted.

第1図で(9)はセグメント(1)の継手ブロック、(
10)は裏面緩衝材(不織布)である。
In Fig. 1, (9) is the joint block of segment (1), (
10) is a back cushioning material (nonwoven fabric).

本発明において、鉄板(2)はセグメント(1)のピー
ス方向に延びているから、セグメント(1)のピース方
向に並ぶ継手ブロック(9)の存在と無関係に、ピース
方向について防水シート(3)を任意の個所にて、磁石
(8)により鉄板(2)に定着でき、防水シートの垂れ
回避を旨く図り得る。
In the present invention, since the iron plate (2) extends in the piece direction of the segment (1), the waterproof sheet (3) extends in the piece direction regardless of the presence of the joint blocks (9) arranged in the piece direction of the segment (1). can be fixed to the iron plate (2) at any location by the magnet (8), and the dripping of the waterproof sheet can be effectively avoided.

本発明では磁石(8)に絶縁性キャップ(9)付きのも
のを適用するので、次のことがもたらされる。
In the present invention, since a magnet (8) with an insulating cap (9) is applied, the following is brought about.

セグメント(1)に張られた防水シート(3)の所要個
所を垂れないよう鉄板(2)に定着せしめる磁石は、相
当に磁力の強いものが必要であり、そのような強い磁力
の磁石が絶縁性キャップのないものであれば、二次覆工
における鉄筋の配筋に支障を招(が、絶縁性キャップ付
き磁石の適用の下ではそのような不都合はない。
The magnets used to fix the required parts of the waterproof sheet (3) on the segments (1) to the iron plate (2) so that they do not sag must have a fairly strong magnetic force. If the magnet does not have a magnetic cap, it will cause trouble in the arrangement of reinforcing bars in the secondary lining (however, if a magnet with an insulating cap is used, there is no such problem.

発明の効果 −1−記のように本発明によれば、!・ンネルのセグメ
ントに張られた防水シートの垂れ回避を旨く達成できる
のである。
According to the present invention, as described in Effects of the Invention-1-!・It is possible to effectively avoid dripping of the tarpaulin sheet stretched over the channel segments.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明工法の一実施例を示す断面図、第2図は
本発明で使用する磁石の断面図である。 (1)・・・セグメント  (2)・・・鉄板・・・防
水シート  (4)・・・熱溶着性ジスク・・・熱溶着
性ジスク付きロッド ・・・インサート ・・・絶縁性キャップ ・・・絶縁性キャップ付き磁石 以上
FIG. 1 is a cross-sectional view showing an embodiment of the construction method of the present invention, and FIG. 2 is a cross-sectional view of a magnet used in the present invention. (1)...Segment (2)...Iron plate...Waterproof sheet (4)...Heat weldable disk...Rod with heat weldable disk...Insert...Insulating cap...・More than magnet with insulating cap

Claims (1)

【特許請求の範囲】[Claims] (1)トンネルのセグメントに防水シートを張るに際し
、セグメントに、セグメントのピース方向に延びる鉄板
を取付け、その上から防水シートを張り、該防水シート
を絶縁性キャップ付き磁石により前記鉄板に定着せしめ
ることを特徴とするトンネル防水シートの垂れ回避施工
法。
(1) When applying a waterproof sheet to a tunnel segment, attach an iron plate to the segment that extends in the direction of the piece of the segment, apply the waterproof sheet over it, and fix the waterproof sheet to the iron plate using a magnet with an insulating cap. A construction method to avoid sagging of tunnel waterproof sheets.
JP2147092A 1990-06-04 1990-06-04 Method for preventing sagging of tunnel waterproof sheet Pending JPH0438400A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2147092A JPH0438400A (en) 1990-06-04 1990-06-04 Method for preventing sagging of tunnel waterproof sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2147092A JPH0438400A (en) 1990-06-04 1990-06-04 Method for preventing sagging of tunnel waterproof sheet

Publications (1)

Publication Number Publication Date
JPH0438400A true JPH0438400A (en) 1992-02-07

Family

ID=15422296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2147092A Pending JPH0438400A (en) 1990-06-04 1990-06-04 Method for preventing sagging of tunnel waterproof sheet

Country Status (1)

Country Link
JP (1) JPH0438400A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113802621A (en) * 2021-09-29 2021-12-17 宏源防水科技集团有限公司 Raft foundation frame column positioning method and magnetic positioning device in waterproof coiled material construction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63172000A (en) * 1988-01-13 1988-07-15 藤森工業株式会社 Method of fixing waterproof sheet
JPS641897A (en) * 1987-06-24 1989-01-06 C I Kasei Co Ltd Cut-off structure for tunnel
JPH01203599A (en) * 1988-02-05 1989-08-16 Kuraray Co Ltd Fitting of water-stop sheet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS641897A (en) * 1987-06-24 1989-01-06 C I Kasei Co Ltd Cut-off structure for tunnel
JPS63172000A (en) * 1988-01-13 1988-07-15 藤森工業株式会社 Method of fixing waterproof sheet
JPH01203599A (en) * 1988-02-05 1989-08-16 Kuraray Co Ltd Fitting of water-stop sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113802621A (en) * 2021-09-29 2021-12-17 宏源防水科技集团有限公司 Raft foundation frame column positioning method and magnetic positioning device in waterproof coiled material construction

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