JP4113292B2 - Sampling method for strength test of backing material for secondary lining - Google Patents
Sampling method for strength test of backing material for secondary lining Download PDFInfo
- Publication number
- JP4113292B2 JP4113292B2 JP34297298A JP34297298A JP4113292B2 JP 4113292 B2 JP4113292 B2 JP 4113292B2 JP 34297298 A JP34297298 A JP 34297298A JP 34297298 A JP34297298 A JP 34297298A JP 4113292 B2 JP4113292 B2 JP 4113292B2
- Authority
- JP
- Japan
- Prior art keywords
- intubation
- specimen
- strength test
- hole
- lining
- 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 - Fee Related
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- Lining And Supports For Tunnels (AREA)
Description
【0001】
【発明の属する技術分野】
本発明は、下水道等のトンネル内をシールド工法等によって一次覆工した後に、ガラス繊維強化プラスチックモルタル(以下、FRPMと略記する)管等の内挿管によって二次覆工する際に、内挿管と一次覆工との間に充填される二次覆工用裏込め材の強度試験用供試体の採取方法に関するものである。
【0002】
【従来の技術】
下水道等のトンネル内をシールド工法等によって一次覆工した後に、FRPM管等の内挿管によって二次覆工する際には、内挿管と一次覆工との間に裏込め材が充填される。裏込め材はあらかじめ採取され、一定期間経過した後に供試体の一軸圧縮試験にて品質管理が行われている。
【0003】
裏込め材を一次覆工と内挿管との間に全体にわたって充填することより、管側部の反力が得られ、FRPM管のような可撓性の内挿管は、側方反力により変形が抑えられる。
【0004】
しかし、一次覆工と内挿管との間に充填される裏込め材は、気泡を多く含むエアーモルタルを使用することが多く、充填する区間において、内挿管の周方向、軸方向に一様であるかは不明であった。
【0005】
【発明が解決しようとする課題】
本発明は、上記の課題を解決し、一次覆工と内挿管との間に実際に充填された裏込め材を採取することができる二次覆工用裏込め材の強度試験用供試体の採取方法を提供することを目的としてなされたものである。
【0006】
【課題を解決するための手段】
本発明1の二次覆工用裏込め材の強度試験用供試体の採取方法は、内挿管に孔が設けられ、該内挿管と一次覆工との間に該孔から裏込め材を充填する工程、流入孔を有して2ケ以上に分割できる容器を上記内挿管の孔に挿入して設置する工程、上記流入孔から流入した裏込め材の供試体を採取するために、上記容器を内挿管より取り外して、容器を分割して、採取した供試体を取り外す工程とを包含するものである。
【0007】
【作用】
本発明1の二次覆工用裏込め材の強度試験用供試体の採取方法は、内挿管に孔が設けられ、該内挿管と一次覆工との間に該孔から裏込め材を充填する工程、流入孔を有して2ケ以上に分割できる容器を上記内挿管の孔に挿入して設置する工程、上記流入孔から流入した裏込め材の供試体を採取することにより、一次覆工と内挿管との間に実際に充填された裏込め材を採取することができる。
【0008】
また、上記容器を内挿管より取り外して、容器を分割して、採取した供試体を取り外す工程を包含することにより、一次覆工と内挿管との間に実際に充填された裏込め材を容易に採取することができる。
【0009】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
図1は、本発明において内挿管に裏込め材の強度試験用供試体採取容器を取り付けた状態の一例を示す平面図、図2は、裏込め材の強度試験用供試体採取容器の組み立てた状態を示す斜視図、図3は、供試体採取容器の一部品を示す斜視図である。
本発明においては、図1に示すように、内挿管1に孔11が設けられ、内挿管1と一次覆工との間に孔11が設けられ、グラウト材5が嵌着されている。裏込め材3は上記孔11より内挿管1と一次覆工2との間に充填する。次いで、流入孔41を有した容器4を孔11に挿入して、流入孔41から供試体を採取する。
【0010】
図2及び図3に示すように、容器4を内挿管より取り外し、且つ取り外した後、2ケ以上に分割する。
【0011】
図1に示す裏込め材3の強度試験用供試体採取容器4には、裏込め材3が採取容器4内に流入されるように幾つかの流入孔41が開いている。図2に示すように、裏込め材3の強度試験用供試体採取容器4は円筒の半割状になっており、図3に示すように、容器部品42の凸部46と凹部47が容器部品43の凹部47と凸部46とそれぞれ嵌合する。供試体採取容器4の外表面には、ネジ45が加工されており、あらかじめ、内挿管の孔11に嵌着されているグラウト材5の雌ネジ(図示せず)に螺合する。次いで、ナット44をネジ45に螺合して、1つの供試体採取容器4となる。また、ナット44を外すことで、採取した供試体を容易に取り外すことが可能になる。
裏込め材採取容器の材質は、一般構造用圧延鋼、ステンレス鋼などの金属製で対応できる。
【0012】
【発明の効果】
本発明の二次覆工用裏込め材の強度試験用供試体の採取方法は、上記のようになされているので、一次覆工と内挿管との間に実際に充填された裏込め材を採取することができる。また、内挿管に設けられた孔は、裏込め材を充填する役目と供試体を供試体を採取する役目とを兼用しているので、余分な孔を設ける必要がない。
容器によって、裏込め材の強度試験用供試体を採取するので、扱いやすい。
【図面の簡単な説明】
【図1】 本発明において内挿管に裏込め材の強度試験用供試体採取容器を取り付けた状態の一例を示す平面図。
【図2】 本発明において裏込め材の強度試験用供試体採取容器の組み立てた状態を示す組立図。
【図3】 本発明において裏込め材の強度試験用供試体採取容器の一部品を示す斜視図。
【符号の説明】
1 内挿管
2 一次覆工
3 裏込め材
4 容器
11 孔
41 流入孔[0001]
BACKGROUND OF THE INVENTION
In the present invention, when a secondary lining is performed by an internal intubation such as a glass fiber reinforced plastic mortar (hereinafter abbreviated as FRPM) pipe after a primary lining in a tunnel such as a sewer by a shield method or the like, The present invention relates to a method for collecting a specimen for strength test of a backing material for secondary lining filled between the primary lining.
[0002]
[Prior art]
After the primary lining in a tunnel such as a sewer by a shield method or the like, when a secondary lining is performed by an internal intubation such as an FRPM pipe, a backfilling material is filled between the internal intubation and the primary lining. The backfill material is collected in advance, and quality control is performed in a uniaxial compression test of the specimen after a certain period.
[0003]
By filling the entire backfill material between the primary lining and the intubation, a reaction force on the side of the tube is obtained, and a flexible intubation such as an FRPM tube is deformed by the side reaction force. Is suppressed.
[0004]
However, the backfill material filled between the primary lining and the intubation often uses air mortar containing a large amount of air bubbles, and is uniform in the circumferential direction and axial direction of the intubation in the filling section. It was unknown whether there was.
[0005]
[Problems to be solved by the invention]
The present invention solves the above-mentioned problems and provides a specimen for strength test of a backing material for secondary lining, which can collect the actually filled backing material between the primary lining and the intubation. It was made for the purpose of providing a collection method.
[0006]
[Means for Solving the Problems]
Sampling method of the present invention the first secondary lining for back-filling material strength test specimens, holes are provided in the inner intubation, filled with back-filling material from said bore between said intubation and primary lining to process step of the container can be divided into more than two positions placed is inserted into the hole of the intubation has an inlet hole, for taking specimens back-filling material which has flowed from the inflow hole, the container And removing the collected specimen from the inner intubation, dividing the container .
[0007]
[Action]
Sampling method of the present invention the first secondary lining for back-filling material strength test specimens, holes are provided in the inner intubation, filled with back-filling material from said bore between said intubation and primary lining to process step of the container can be divided has an inflow hole than two positions placed is inserted into the hole of the intubation, by collecting specimens of back-filling material which has flowed from the inflow hole, the primary covering The backfill material actually filled between the work and the intubation can be collected.
[0008]
Further, by removing the inner cannula to the container, to divide the vessel, by including the step of removing the collected specimen, facilitate back-filling material that is actually filled between the inner intubation and primary lining Can be collected.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view illustrating an example of a state in which a specimen collection container for strength test of a backfill material is attached to an intubation tube in the present invention, and FIG. 2 is an assembled sample collection container for strength test of a backfill material. FIG. 3 is a perspective view showing one part of a specimen collection container.
In the present invention, as shown in FIG. 1, a
[0010]
As shown in FIG.2 and FIG.3, after removing the container 4 from the intubation and removing it, it divides | segments into two or more pieces.
[0011]
In the specimen collection container 4 for strength testing of the
The material of the backfilling material collection container can be made of metal such as general structural rolled steel and stainless steel.
[0012]
【The invention's effect】
Since the method for collecting the test specimen for strength test of the backing material for secondary lining according to the present invention is as described above, the backing material actually filled between the primary lining and the intubation tube is used. Can be collected. Moreover, since the hole provided in the intubation tube serves both as the role of filling the backfill material and the role of collecting the specimen as the specimen, it is not necessary to provide an extra hole.
Since the specimen for strength test of the backfill material is collected by the container, it is easy to handle.
[Brief description of the drawings]
FIG. 1 is a plan view showing an example of a state in which a specimen collection container for strength testing of a backfill material is attached to an intubation tube in the present invention.
FIG. 2 is an assembly diagram showing an assembled state of a specimen collection container for strength test of a backfill material in the present invention.
FIG. 3 is a perspective view showing one part of a specimen collection container for strength testing of a backfill material in the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34297298A JP4113292B2 (en) | 1998-12-02 | 1998-12-02 | Sampling method for strength test of backing material for secondary lining |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP34297298A JP4113292B2 (en) | 1998-12-02 | 1998-12-02 | Sampling method for strength test of backing material for secondary lining |
Publications (2)
Publication Number | Publication Date |
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JP2000160995A JP2000160995A (en) | 2000-06-13 |
JP4113292B2 true JP4113292B2 (en) | 2008-07-09 |
Family
ID=18357943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP34297298A Expired - Fee Related JP4113292B2 (en) | 1998-12-02 | 1998-12-02 | Sampling method for strength test of backing material for secondary lining |
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JP (1) | JP4113292B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108756941A (en) * | 2018-05-28 | 2018-11-06 | 中铁隆工程集团有限公司 | Two lining trolley band of one kind being molded into slurry structure and band is molded into paste-making method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107201906B (en) * | 2017-06-16 | 2023-06-09 | 中铁二十四局集团安徽工程有限公司 | Slag discharging structure and slag discharging method of tunnel upper guide pit |
-
1998
- 1998-12-02 JP JP34297298A patent/JP4113292B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108756941A (en) * | 2018-05-28 | 2018-11-06 | 中铁隆工程集团有限公司 | Two lining trolley band of one kind being molded into slurry structure and band is molded into paste-making method |
Also Published As
Publication number | Publication date |
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JP2000160995A (en) | 2000-06-13 |
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