JP4350059B2

JP4350059B2 - Filling confirmation method and system using electronic tag

Info

Publication number: JP4350059B2
Application number: JP2005121118A
Authority: JP
Inventors: 光春中原; 哲夫竹田; 悟三浦; 祐治高橋; 成人倉田
Original assignee: Kajima Corp
Current assignee: Kajima Corp
Priority date: 2005-04-19
Filing date: 2005-04-19
Publication date: 2009-10-21
Anticipated expiration: 2025-04-19
Also published as: JP2006299604A

Description

本発明は電子タグ利用の充填確認方法及びシステムに関し、とくにコンクリートやグラウト等の液状物質の注入による空隙の充填確認方法及びシステムに関する。 The present invention relates to a filling confirmation method and system using an electronic tag, and more particularly to a filling confirmation method and system for a void by injecting a liquid substance such as concrete or grout.

鉄筋コンクリート構造（ＲＣ構造）の柱、梁、壁等を構築する場合は、例えば図１に示すように、型枠２で囲まれた空隙１内にコンクリートＣを隅々まで打設する。未充填部分をなくすため、打設後のコンクリートＣをバイブレータ等で振動させ締固める方法や、バイブレータ等が使用できない場合は流動性を高めた超流動コンクリートＣを用いる方法等が実施されているが、型枠２の内側は目視で確認できないため、施工・品質管理の観点からコンクリートの充填完了をなんらかの方法で確認することが要求される場合がある。 When constructing columns, beams, walls or the like of a reinforced concrete structure (RC structure), concrete C is driven to every corner in the space 1 surrounded by the mold 2 as shown in FIG. In order to eliminate the unfilled portion, the concrete C after placement is vibrated and compacted with a vibrator or the like, or when the vibrator or the like cannot be used, a method using superfluid concrete C with improved fluidity has been implemented. Since the inside of the mold 2 cannot be visually confirmed, it may be required to confirm the completion of concrete filling by some method from the viewpoint of construction and quality control.

従来、型枠２の内側のような目視で確認できない空隙１の充填完了を確認する場合に、例えばＸ線等の大型計測機器を用いて施工後に型枠２の外側から検査を行なうことがある。しかし、施工後の検査では、未充填部分が発見された場合に再度施工しなおす等の対処に非常に手間と時間がかかる。簡単な作業で未充填部分をなくすためには、打設時又は直後に型枠２内の充填状況をリアルタイムに確認することが有効である。 Conventionally, when confirming the completion of filling of the gap 1 that cannot be visually confirmed, such as the inside of the mold 2, an inspection may be performed from the outside of the mold 2 after construction using a large measuring device such as an X-ray. . However, in the inspection after construction, it takes a lot of work and time to deal with re-installation when an unfilled part is found. In order to eliminate the unfilled portion by a simple operation, it is effective to check the filling state in the mold 2 in real time at the time of casting or immediately after.

型枠２内の充填状況をリアルタイムに確認する方法として、超流動性コンクリートの施工モデル実験等では、アクリル樹脂等の透明型枠が用いられている。しかし透明型枠は高価であり、実施工での実用化は難しい。これに対し例えば特許文献１及び２は、図６に示すように、コンクリート型枠２の内面の所定部位にリード線44、44付きの電気接点41、42が取り付けられた薄い絶縁シート43からなる電極40を配設し、リード線44、44の間に電源46及び導電検出素子（例えば、発光ダイオード等）45を接続し、打設コンクリートＣと電気接点41、42との間の導通を導電検出素子45により検知する方法を提案している。型枠２が金属製である場合は、電気接点41、42の一方を金属製型枠２としてもよい。また特許文献３は、図６の電極46に代えて、コンクリートＣが流入可能な小間隙を介して発光部と受光部とが設けられた小型・軽量の光センサを用いることを提案している。 As a method for confirming the state of filling in the mold 2 in real time, a transparent mold such as acrylic resin is used in a construction model experiment of superfluid concrete. However, the transparent formwork is expensive, and it is difficult to put it into practical use. On the other hand, for example, Patent Documents 1 and 2 include a thin insulating sheet 43 in which electrical contacts 41 and 42 with lead wires 44 and 44 are attached to predetermined portions on the inner surface of the concrete mold 2 as shown in FIG. An electrode 40 is disposed, and a power source 46 and a conductive detection element (for example, a light emitting diode) 45 are connected between the lead wires 44 and 44 to conduct the conduction between the cast concrete C and the electrical contacts 41 and 42. A method of detecting by the detection element 45 is proposed. When the mold 2 is made of metal, one of the electrical contacts 41 and 42 may be the metal mold 2. Further, Patent Document 3 proposes to use a small and lightweight optical sensor provided with a light emitting part and a light receiving part through a small gap through which concrete C can flow instead of the electrode 46 of FIG. .

図６の充填検知方法において、型枠２の電極40（又は光センサ）の配設部位にコンクリートＣが充填された場合は、電極40の電気接点41、42間の電気抵抗が小さくなり（又は光センサの発光部と受光部との間の光が遮断されて）導電検出素子45に電流が流れる。電極40の配設部位に空気溜まり47が残った場合は、電極40に導通が生じず導電検出素子45に電流が流れないので、コンクリート未充填として検出される。空気溜まり47等のコンクリート未充填が検出された場合は、例えば同図（Ｂ）のように型枠１に空気抜き孔48を設けて空気Ａを逃がすことにより、未充填部分を解消する。なお、打設コンクリートの表面水の電気抵抗も空気のそれに比してかなり小さいが、コンクリート充実部分と表面水との間には抵抗値の差が存在するので、その抵抗値の差を検知することにより、電極40の配設部位にコンクリート表面水が残存して生じるコンクリート未充填をも検出することが可能である（特許文献２参照）。 In the filling detection method of FIG. 6, when concrete C is filled in the portion where the electrode 40 (or optical sensor) of the mold 2 is disposed, the electrical resistance between the electrical contacts 41 and 42 of the electrode 40 is reduced (or The light flows between the light-emitting part and the light-receiving part of the optical sensor, and a current flows through the conductive detection element 45. When the air reservoir 47 remains at the site where the electrode 40 is disposed, no conduction occurs in the electrode 40 and no current flows through the conductivity detecting element 45, so that the concrete is detected as not filled. When unfilled concrete such as the air reservoir 47 is detected, the unfilled portion is eliminated by providing the air vent hole 48 in the mold 1 and releasing the air A, for example, as shown in FIG. In addition, although the electrical resistance of the surface water of the cast concrete is considerably smaller than that of air, there is a difference in the resistance value between the concrete-filled part and the surface water, so the difference in resistance value is detected. Thus, it is possible to detect unfilled concrete caused by the surface water of the concrete remaining at the site where the electrode 40 is disposed (see Patent Document 2).

特許第２７４４４００号公報Japanese Patent No. 2744400 特許第２８５８７２５号公報Japanese Patent No. 2858725 特許第３２４６５３０号公報Japanese Patent No. 3246530 特開平６−１９４２７５号公報JP-A-6-194275 特開２００２−０３９８１０号公報JP 2002-039810 A 総務省「ユビキタスネットワーク時代における電子タグの高度利活用に関する調査研究会」最終報告書、平成16年3月Ministry of Internal Affairs and Communications "Survey Study Group on Advanced Utilization of RFID Tags in the Age of Ubiquitous Networks", Final Report, March 2004

しかし、特許文献１〜３の充填検出方法は、電極40の導通（又は光センサの遮断）を検知するために型枠２の内外を貫いてリード線44を配線しなければならず、リード線44の配線に手間がかかる問題点がある。このため、実際の施工現場で広い型枠２内の全体に多数の電極40を配置することは難しく、型枠２内の限られた難充填部位の充填状況のみを確認しているのが現実である。また、多数の電極40を相互に近接させて配置して特定部位の充填状況を詳細に検討することも容易ではない。施工・品質管理の観点からは型枠２内の全体的な充填状況を詳細に確認できることが望ましく、広範囲にわたる充填状況を簡単に確認できるシステムの開発が望まれている。 However, in the filling detection methods of Patent Documents 1 to 3, the lead wire 44 has to be wired through the inside and outside of the mold 2 in order to detect the continuity of the electrode 40 (or the interruption of the optical sensor). There is a problem that 44 wiring takes time. For this reason, it is difficult to arrange a large number of electrodes 40 in the entire mold 2 at the actual construction site, and it is a reality that only the filling situation of limited difficult filling sites in the mold 2 is confirmed. It is. In addition, it is not easy to examine the filling state of a specific part in detail by arranging a large number of electrodes 40 close to each other. From the viewpoint of construction and quality control, it is desirable to be able to confirm in detail the overall filling situation in the mold 2, and development of a system that can easily confirm a wide range of filling conditions is desired.

そこで本発明の目的は、広範囲にわたる空隙内の充填状況を簡単に確認できる充填確認方法及びシステムを提供することにある。 Therefore, an object of the present invention is to provide a filling confirmation method and system that can easily confirm the filling state in a wide range of voids.

本発明者は、最近の電子タグ技術の発達に注目した。電子タグはＩＣ回路とアンテナとを内蔵した標識（タグ）であり、電磁波を利用してＩＣ回路内に格納した個別の識別情報を非接触で読み取り又は読み書きすることができる（非特許文献１参照）。最近では数mm〜数十mmの寸法の小型で安価な電子タグが開発されており、機能センサと組み合わせてトンネル・橋梁等の土木構造物やビルディング等の建築構造物に埋め込んで構造物の状態をモニタリングするシステム等も提案されている（特許文献４及び５参照）。電子タグを用いてコンクリートの充填を確認できれば、型枠内のコンクリート充填状況を非接触で簡単に把握することが期待できる。本発明は、この着想に基づき完成に至ったものである。 The inventor has paid attention to the recent development of electronic tag technology. An electronic tag is a sign (tag) incorporating an IC circuit and an antenna, and can individually read or read / write individual identification information stored in the IC circuit using electromagnetic waves (see Non-Patent Document 1). ). Recently, small and inexpensive electronic tags with dimensions of several mm to several tens of mm have been developed, and in combination with functional sensors, they are embedded in civil engineering structures such as tunnels and bridges and building structures such as buildings. A system for monitoring the above has also been proposed (see Patent Documents 4 and 5). If concrete filling can be confirmed using an electronic tag, it can be expected that the concrete filling state in the mold will be easily grasped without contact. The present invention has been completed based on this idea.

図１の実施例を参照するに、本発明による電子タグ利用の充填確認方法は、液状物質Ｃを注入する空隙１内の複数の所定部位Piにそれぞれ無線識別信号Siを送信するＩＣ回路13及びアンテナ12（図５参照）を有し且つ液状物質Ｃの接触又は圧力により送信機能を失う電子タグユニット10iを取り付け、空隙１の外側で各電子タグユニット10iの識別信号Siを繰り返し読み取り、空隙１内への液状物質Ｃの注入時又は後に読み取りの停止した識別信号Siによりその識別信号Siの電子タグユニット10iの取り付け部位Piへの液状物質Ｃの充填を確認してなるものである。 Referring to the embodiment of FIG. 1, the filling confirmation method using an electronic tag according to the present invention includes an IC circuit 13 for transmitting a radio identification signal Si to a plurality of predetermined sites Pi in a gap 1 into which a liquid substance C is injected, and An electronic tag unit 10i having an antenna 12 (see FIG. 5) and losing the transmission function due to contact or pressure of the liquid substance C is attached, and the identification signal Si of each electronic tag unit 10i is repeatedly read outside the gap 1, The filling of the liquid substance C into the attachment site Pi of the electronic tag unit 10i of the identification signal Si is confirmed by the identification signal Si whose reading is stopped at the time of injection of the liquid substance C into the inside or afterwards.

また図１の実施例を参照するに、本発明による電子タグ利用の充填確認システムは、無線識別信号Siを送信するＩＣ回路13及びアンテナ12（図５参照）を有し且つ液状物質Ｃを注入する空隙１内の複数の所定部位Piに取り付けられ液状物質Ｃの接触又は圧力により通信機能を失う電子タグユニット10iの群、並びに各電子タグユニット10iの識別信号Siを繰り返し読み取る読み取り手段27と、読み取り手段27による読み取りの停止した識別信号Siを表示する表示手段29とを有する充填検出装置20を備えてなるものである。 Referring also to the embodiment of FIG. 1, the filling confirmation system using an electronic tag according to the present invention has an IC circuit 13 for transmitting a radio identification signal Si and an antenna 12 (see FIG. 5) and injects a liquid substance C. A group of electronic tag units 10i attached to a plurality of predetermined sites Pi in the gap 1 that lose the communication function due to contact or pressure of the liquid substance C, and reading means 27 for repeatedly reading the identification signal Si of each electronic tag unit 10i; It is provided with a filling detection device 20 having display means 29 for displaying an identification signal Si that has been read by the reading means 27.

好ましくは、充填検出装置20に、各電子タグユニット10iの取り付け部位Pi及び識別信号Siを記憶する記憶手段26と、読み取り手段26による読み取りの停止した識別信号Siの電子タグユニット10iの取り付け部位Piを検出する読み取り停止部位検出手段28とを設ける。更に好ましくは、電子タグユニット10iに、ＩＣ回路13及びアンテナ12を有する電子タグ本体（例えばインレット）11と液状物質Ｃの接触又は圧力により溶解又は破壊される電子タグ本体11の止水カバー18とを含める。電子タグ本体11は、図５に示すように、空隙１の外側からの無線読み出し信号Ｒにより起動され無線識別信号Siを送信するパッシブ型電子タグとすることができる。 Preferably, in the filling detection device 20, a storage means 26 for storing the attachment site Pi and the identification signal Si of each electronic tag unit 10i, and an attachment site Pi of the electronic tag unit 10i of the identification signal Si stopped by the reading means 26 And a reading stop portion detecting means 28 for detecting the above. More preferably, the electronic tag unit 10i includes an electronic tag main body (for example, an inlet) 11 having an IC circuit 13 and an antenna 12 and a water stop cover 18 of the electronic tag main body 11 that is dissolved or destroyed by contact or pressure of the liquid substance C. Include. As shown in FIG. 5, the electronic tag main body 11 can be a passive electronic tag that is activated by a wireless readout signal R from the outside of the gap 1 and transmits a wireless identification signal Si.

本発明による電子タグ利用の充填確認方法及びシステムは、液状物質Ｃを注入する空隙１内の複数の所定部位Piにそれぞれ液状物質Ｃの接触又は圧力により送信機能を失う電子タグユニット10iを取り付け、空隙１内への液状物質Ｃの注入時又は後に読み取りの停止した識別信号Siによりその識別信号Siの電子タグユニット10iの取り付け部位Piへの液状物質Ｃの充填を確認するので、次の顕著な効果を奏する。 In the filling confirmation method and system using an electronic tag according to the present invention, an electronic tag unit 10i that loses its transmission function due to contact or pressure of the liquid material C is attached to each of a plurality of predetermined sites Pi in the gap 1 into which the liquid material C is injected, When the liquid substance C is injected into the gap 1 or after the reading of the identification signal Si stopped after reading, the filling of the liquid substance C into the attachment site Pi of the electronic tag unit 10i of the identification signal Si is confirmed. There is an effect.

（イ）空隙内の必要な部位に電子タグユニットを取り付ける簡単な作業で空隙内の充填状況をリアルタイムに確認できる。
（ロ）リード線等の配線を必要せず、空隙内の全域に多数の電子タグユニットを簡単に取り付けることができるので、空隙内の全体的な充填分布や充填進捗状況等を確認することができる。
（ハ）また、空隙内の特定部位に複数の電子タグユニットを相互に近接させて取り付けることができ、空隙内の部分的な充填状況を詳細に確認することも可能である。
（ニ）型枠で囲まれた空隙へのコンクリート充填、シース内に通したＰＣ鋼棒周囲の空隙へのグラウト充填、シールドセグメントと周囲地盤との間の空隙へのグラウト充填等、土木・建築分野における目視で確認できない様々な空隙内への液状物質の充填確認に利用することが期待できる。 (A) The filling state in the gap can be confirmed in real time by a simple operation of attaching the electronic tag unit to a necessary portion in the gap.
(B) Since a large number of electronic tag units can be easily attached to the entire area of the gap without the need for wiring such as lead wires, it is possible to confirm the overall filling distribution and filling progress in the gap. it can.
(C) It is also possible to attach a plurality of electronic tag units close to each other at a specific site in the gap, and it is also possible to confirm in detail the state of partial filling in the gap.
D It can be expected to be used for confirming the filling of liquid substances in various voids that cannot be visually confirmed in the field.

図１は、この場合コンクリートである液状物質Ｃを、鉄筋３が組み立てられコンクリート型枠2a〜2hで囲まれた空隙１内に充填する場合に適用した本発明の充填確認システムの実施例を示す。図示例の充填確認システムは、空隙１内の複数の所定部位Piに取り付けられて無線識別信号Siを送信する電子タグユニット10iの群と、各電子タグユニット10iからの識別信号Siを読み取って所定部位Pi毎に液状物質Ｃの充填を検出する充填検出装置20とを有する。図示例では、電子タグユニット10iの群をコンクリート型枠2a〜2hのコンクリート打設面である内面2a（空隙１の内面1a）上に貼り付けているが、電子タグユニット10iの取り付け部位は型枠２の内面2a上に限定されるものではなく、充填検出装置20に無線識別信号Siが到達する範囲内であれば、例えば空隙１内に組み立てた鉄筋３上に電子タグユニット10iを取り付けることも可能である。 FIG. 1 shows an embodiment of the filling confirmation system of the present invention applied to the case where the liquid substance C, which is concrete in this case, is filled in the gap 1 surrounded by the rebar 3 and surrounded by the concrete molds 2a to 2h. . The filling confirmation system of the illustrated example reads a predetermined group by reading a group of electronic tag units 10i that are attached to a plurality of predetermined portions Pi in the gap 1 and transmit a wireless identification signal Si, and an identification signal Si from each electronic tag unit 10i. A filling detection device 20 for detecting the filling of the liquid substance C is provided for each site Pi. In the illustrated example, the group of electronic tag units 10i is pasted on the inner surface 2a (the inner surface 1a of the gap 1), which is a concrete placement surface of the concrete molds 2a to 2h. The electronic tag unit 10i is attached to the reinforcing bar 3 assembled in the gap 1, for example, as long as the wireless identification signal Si reaches the filling detection device 20 without being limited to the inner surface 2a of the frame 2. Is also possible.

図１（Ｂ）は、複数の電子タグユニット10を取り付けたコンクリート型枠２のコンクリート打設面2aを示す。各電子タグユニット10は、無線識別信号Ｓを送信する電子タグ本体11と、液状物質Ｃの接触又は圧力により破壊又は溶解される電子タグ11本体の止水カバー18とを有する。電子タグ本体11には、例えば図５に示すように、ＩＣ回路13とアンテナ12とが組込まれている。図示例の電子タグ本体11は、無線読み出し信号Ｒにより起動されて無線識別信号Siを送信するパッシブ型のものであり、この場合のＩＣ回路13には電源回路14と制御回路15と記憶回路16と送受信回路17とが含まれる。ただし電子タグ本体11は、電池等を内蔵して自発的に識別信号Siを送信できるアクティブ型のものとしてもよい。また本発明において電子タグ本体11の形状にとくに制限はなく、取り付け部位Piに応じて円板形、円筒形、ラベル形、カード形等の任意の形状の電子タグ本体11を選択することができる。 FIG. 1B shows a concrete placement surface 2a of a concrete mold 2 to which a plurality of electronic tag units 10 are attached. Each electronic tag unit 10 includes an electronic tag main body 11 that transmits a wireless identification signal S, and a water stop cover 18 of the electronic tag 11 main body that is broken or dissolved by contact or pressure of the liquid substance C. For example, as shown in FIG. 5, an IC circuit 13 and an antenna 12 are incorporated in the electronic tag main body 11. The electronic tag main body 11 of the illustrated example is a passive type that is activated by a wireless read signal R and transmits a wireless identification signal Si. In this case, the IC circuit 13 includes a power supply circuit 14, a control circuit 15, and a storage circuit 16. And a transmission / reception circuit 17. However, the electronic tag main body 11 may be of an active type that incorporates a battery or the like and can transmit the identification signal Si spontaneously. In the present invention, the shape of the electronic tag main body 11 is not particularly limited, and the electronic tag main body 11 having an arbitrary shape such as a disk shape, a cylindrical shape, a label shape, or a card shape can be selected according to the attachment site Pi. .

図５の電子タグ本体11は、充填検出装置20から送信された電磁波の読み出し信号Ｒをアンテナ12で受信し、読み出し信号Ｒの受信時の電磁誘導又は共振によって電源回路14に電力が充電され、その電力により制御回路15が記憶回路16に記憶された識別信号Siを読み出し、読み出した識別信号Siを送受信回路17によりアンテナ12から送信する。液状物質Ｃが充填される空隙１内に配置する電子タグ本体11は、止水カバー18により保護されている間は送信機能を維持するが（図１（Ｃ）参照）、止水カバー18が破壊又は溶解して電子タグ本体11が液状物質Ｃ中に浸漬すると絶縁が破壊されて送信機能を喪失する（図１（Ｄ）参照）。止水カバー18が液状物質Ｃの充填に応じて破壊又は溶解するように設計しておけば、識別信号Siの送信停止により電子タグユニット10iの取り付け部位Piにおける液状物質Ｃの充填を検出できる。 5 receives the read signal R of the electromagnetic wave transmitted from the filling detection device 20 by the antenna 12, and the power is charged in the power supply circuit 14 by electromagnetic induction or resonance when the read signal R is received. The control circuit 15 reads the identification signal Si stored in the storage circuit 16 by the power, and transmits the read identification signal Si from the antenna 12 by the transmission / reception circuit 17. The electronic tag main body 11 arranged in the gap 1 filled with the liquid substance C maintains the transmission function while being protected by the water stop cover 18 (see FIG. 1C). When the electronic tag main body 11 is immersed in the liquid substance C after being destroyed or dissolved, the insulation is destroyed and the transmission function is lost (see FIG. 1D). If the water stop cover 18 is designed to be broken or dissolved in response to the filling of the liquid material C, the filling of the liquid material C at the attachment site Pi of the electronic tag unit 10i can be detected by stopping the transmission of the identification signal Si.

図４（Ａ）は、液状物質Ｃの機械的な充填圧力によって止水カバー18が破壊される電子タグユニット10の一例を示す。図示例の電子タグユニット10は、電子タグ本体11を被覆する止水カバー18aと、止水カバー18aの一端又は両端を型枠２の内面2a上に片持はり又は固定はり状に支持する台座19とを有する。台座19は、例えば円形又は四角形である底部19aとその周囲に立ち上げた脚部19bとを有し、底部19aが接着剤19d等により型枠２の内面2a上に固定され、脚部19bの頂端に止水カバー18aで被覆された電子タグ本体11を型枠２の内面2aと平行に間隙19aを介して固定はり状に支持する。台座19は、読み出し信号Ｒ及び識別信号Siの送受信に影響を与えない例えばプラスチック等の材料製とすることが望ましい。なお、型枠２の内面2aから間隙19aを介して取り付けることにより、型枠２が金属製であっても、型枠２による送受信の影響は小さく抑えることができる。 4A shows an example of the electronic tag unit 10 in which the water stop cover 18 is broken by the mechanical filling pressure of the liquid substance C. FIG. The electronic tag unit 10 in the illustrated example includes a water stop cover 18a that covers the electronic tag main body 11, and a base that supports one end or both ends of the water stop cover 18a on the inner surface 2a of the mold 2 in a cantilevered or fixed beam shape. 19 and. The pedestal 19 has, for example, a bottom portion 19a that is circular or square and a leg portion 19b raised around the bottom portion 19a. The bottom portion 19a is fixed on the inner surface 2a of the mold 2 by an adhesive 19d or the like. An electronic tag main body 11 whose top end is covered with a water stop cover 18a is supported in a fixed beam shape through a gap 19a in parallel with the inner surface 2a of the mold 2. The pedestal 19 is preferably made of a material such as plastic that does not affect the transmission and reception of the read signal R and the identification signal Si. In addition, even if the mold 2 is made of metal, it is possible to suppress the influence of transmission and reception by the mold 2 to be small by attaching from the inner surface 2a of the mold 2 via the gap 19a.

液状物質Ｃの充填時に型枠２の内面2aに加わる圧力は、その組成等に応じて予め試験的又は実験的に求めることができるので、片持はり又は固定はり状に支持した止水カバー18の強度（曲げ強さ）を、その液状物質Ｃの充填時に型枠２の内面2aに加わる圧力の曲げモーメントによって破壊されるように設計しておけば、液状物質Ｃの充填に応じて止水カバー18を破壊して電子タグ本体11の送信機能を停止させることができる。台座19は、止水カバー18aで被覆された電子タグ本体11を片持はり又は固定はり状に支持できるものであれば足り、例えば図４（Ｂ）及び（Ｃ）に示すように、止水カバー18aの両端部のみを支持する底部19a又は脚部19bのみからなるものとしてもよい。台座19及び止水カバー18aの大きさは、できるだけ小さい方が望ましいが、液状物質Ｃの充填時に加わる圧力で破損するように適当に選択することができる。また、例えば図２（Ｄ）に示すように、場合によっては型枠２内に電子タグユニット10を埋め込むことも可能である。例えば図４（Ａ）〜（Ｃ）のような電子タグユニット10を工場等で量産し、施工現場においてコンクリート型枠２の打設面2a上の複数の所定部位Piにそれぞれ接着剤19bで貼り付けるか又は埋め込む。予め打設面2a上に電子タグユニット10が取り付けられたコンクリート型枠２を工場等で製造することもできる。 Since the pressure applied to the inner surface 2a of the mold 2 at the time of filling with the liquid substance C can be determined in advance experimentally or experimentally according to the composition or the like, the waterproof cover 18 supported in the form of a cantilever beam or a fixed beam. If the strength (bending strength) is designed to be destroyed by the bending moment of the pressure applied to the inner surface 2a of the mold 2 when the liquid material C is filled, the water stops according to the filling of the liquid material C. The transmission function of the electronic tag main body 11 can be stopped by destroying the cover 18. The pedestal 19 is sufficient if it can support the RFID tag main body 11 covered with the water stop cover 18a in a cantilevered or fixed beam shape, for example, as shown in FIGS. 4B and 4C. It may be composed of only the bottom 19a or the leg 19b that supports only both ends of the cover 18a. The sizes of the pedestal 19 and the water stop cover 18a are preferably as small as possible, but can be appropriately selected so as to be damaged by the pressure applied when the liquid material C is filled. In addition, as shown in FIG. 2D, for example, the electronic tag unit 10 can be embedded in the mold 2 in some cases. For example, the electronic tag unit 10 as shown in FIGS. 4 (A) to 4 (C) is mass-produced at a factory or the like, and adhered to a plurality of predetermined portions Pi on the placement surface 2a of the concrete mold 2 with an adhesive 19b at the construction site. Attach or embed. The concrete mold 2 in which the electronic tag unit 10 is previously mounted on the placing surface 2a can also be manufactured in a factory or the like.

図４（Ｄ）は、液状物質Ｃとの接触により止水カバー18cが溶解する電子タグユニット10の一例を示す。図示例の止水カバー18cは、液状物質Ｃに溶解する材料製の膜状シールであり、電子タグ本体11を被覆すると共に型枠２の内面2a上に固定することができる。例えばアルカリ性のコンクリート中に一定時間以上浸漬することにより止水カバー18cが溶解し、電子タグ本体11の送信機能を停止させる。この場合の止水カバー18cの厚さは、液状物質Ｃの組成等に応じて予め試験的又は実験的に求めることができる。例えば図４（Ｄ）のような止水カバー18cを工場等で量産し、施工現場においてコンクリート型枠２の打設面2a上の複数の所定部位Piにそれぞれ電子タグ本体11を包んで貼り付ける。 FIG. 4D shows an example of the electronic tag unit 10 in which the water stop cover 18c is dissolved by contact with the liquid substance C. FIG. The water stop cover 18c in the illustrated example is a film-like seal made of a material that dissolves in the liquid substance C, and covers the electronic tag main body 11 and can be fixed on the inner surface 2a of the mold 2. For example, the water stop cover 18c is dissolved by immersing it in alkaline concrete for a predetermined time or more, and the transmission function of the electronic tag main body 11 is stopped. In this case, the thickness of the water stop cover 18c can be determined in advance experimentally or experimentally according to the composition of the liquid substance C or the like. For example, the waterproof cover 18c as shown in FIG. 4 (D) is mass-produced at a factory or the like, and the electronic tag main body 11 is wrapped and attached to a plurality of predetermined portions Pi on the placement surface 2a of the concrete mold 2 at the construction site. .

充填検出装置20には、各電子タグユニット10iの識別信号Siを読み取る読み取り手段27と、読み取り手段27による読み取りの停止した識別信号Siを表示する表示手段29とを設ける。図示例の充填検出装置20は、読み取り手段27及び表示手段29に加えて、各電子タグユニット10iの取り付け部位Pi及び識別信号Siを記憶する記憶手段26と、読み取り手段27による読み取りの停止した識別信号Siの電子タグユニット10iの取り付け部位Piを検出する読み取り停止部位検出手段28とを有している。充填検出装置20の一例は、アンテナ21及び送受信部22が接続されたコンピュータであり、記憶手段26をコンピュータのメモリとし、読み取り手段27、表示手段29及び読み取り停止部位検出手段28をコンピュータの内蔵プログラムすることができる（図５も参照）。また図示例の充填検出装置20はディスプレイ24を有し、表示手段29が、読み取りの停止した識別信号Si又は読み取り停止部位検出手段28の検出した読み取り停止部位Piをディスプレイ24に表示する。例えば充填検出装置20を可搬型の携帯コンピュータとし、作業員が型枠２の周囲を持ち歩きながら型枠２の内側の充填状況を確認することができる。 The filling detection device 20 is provided with reading means 27 for reading the identification signal Si of each electronic tag unit 10i and display means 29 for displaying the identification signal Si that has been read by the reading means 27. In addition to the reading means 27 and the display means 29, the filling detection device 20 in the illustrated example includes a storage means 26 for storing the attachment site Pi and the identification signal Si of each electronic tag unit 10i, and an identification in which reading by the reading means 27 is stopped. Read stop part detecting means 28 for detecting the attachment part Pi of the electronic tag unit 10i of the signal Si is provided. An example of the filling detection device 20 is a computer to which an antenna 21 and a transmission / reception unit 22 are connected. The storage means 26 is a computer memory, and the reading means 27, the display means 29, and the reading stop part detection means 28 are built-in programs in the computer. (See also FIG. 5). Further, the filling detection apparatus 20 in the illustrated example has a display 24, and the display means 29 displays the identification signal Si whose reading has been stopped or the reading stop portion Pi detected by the reading stop portion detecting means 28 on the display 24. For example, the filling detection device 20 may be a portable portable computer, and an operator can check the filling state inside the mold 2 while carrying around the mold 2.

型枠２内のコンクリート充填を確認するため、図１（Ａ）及び（Ｂ）のようにコンクリート打設前に型枠２の内面2aの複数の所定部位Piにそれぞれ、図４のような電子タグユニット10を取り付ける。各電子タグユニット10の取り付け部位Piは、各電子タグユニット10の識別信号Siと共に、充填検出装置20の記憶手段26に記憶しておく。ただし、例えば型枠２の外側に電子タグユニット10の識別信号Si及び取り付け部位Piを表示できる場合は、充填検出装置20に取り付け部位Piを記憶しておかなくとも、その表示と後述する読み取りの停止した識別信号Siとから充填状況を確認することができる。 In order to confirm the concrete filling in the mold 2, as shown in FIGS. 1 (A) and 1 (B), before placing the concrete, a plurality of predetermined parts Pi on the inner surface 2a of the mold 2 are respectively shown in FIG. Install the tag unit 10. The attachment site Pi of each electronic tag unit 10 is stored in the storage means 26 of the filling detection device 20 together with the identification signal Si of each electronic tag unit 10. However, for example, when the identification signal Si and the attachment site Pi of the electronic tag unit 10 can be displayed on the outside of the mold 2, even if the attachment site Pi is not stored in the filling detection device 20, the display and reading to be described later are performed. The filling state can be confirmed from the stopped identification signal Si.

電子タグユニット10が取り付けられた型枠２を組み立てたのち、図１（Ｃ）に示すように、型枠２の外側に設けた充填検出装置20の読み取り手段27から送受信手段22及びアンテナ21を介して読み出し信号Ｒを送信し、各電子タグユニット10iの応答する識別信号Siを送受信手段22及びアンテナ21を介して読み取り手段27により読み取る。コンクリート打設前の段階では、型枠２の内面2aに取り付けた全ての電子タグユニット10からの識別信号Siを読み取れるはずであるが、識別信号Siを読み取れることができない電子タグユニット10は故障と判断する。例えば各取り付け部位Piに複数の電子タグユニット10を相互に近接させて取り付けておくことにより、一部分の電子タグユニット10の識別信号Siを読み取れることができない場合でも、各取り付け部位Piの充填状況は十分確認できる。 After assembling the mold 2 to which the electronic tag unit 10 is attached, as shown in FIG. 1C, the transmission / reception means 22 and the antenna 21 are connected from the reading means 27 of the filling detector 20 provided outside the mold 2. The reading signal R is transmitted through the electronic tag unit 10i, and the identification signal Si to which each electronic tag unit 10i responds is read by the reading unit 27 through the transmission / reception unit 22 and the antenna 21. In the stage before placing concrete, the identification signal Si from all the electronic tag units 10 attached to the inner surface 2a of the mold 2 should be able to be read. However, the electronic tag unit 10 that cannot read the identification signal Si has failed. to decide. For example, even if the identification signal Si of a part of the electronic tag units 10 cannot be read by attaching a plurality of electronic tag units 10 close to each other at each attachment site Pi, the filling status of each attachment site Pi is I can confirm enough.

そして型枠２内にコンクリートを打設する際又は充填直後に、読み取り手段27により各電子タグユニット10iの識別信号Siを繰り返し読み取り、読み取りの停止した識別信号Siを検出する。図１（Ｄ）に示すように、識別信号Siの読み取りの停止は、その識別信号Siを送信する電子タグユニット10iが液状物質Ｃに浸漬して止水カバー18が破壊又は溶解したことを示す。その読み取りの停止した識別信号Siを表示手段29によりディスプレイ24に表示することにより、型枠２の外側の作業員は、ディスプレイ24に表示された識別信号Siと型枠２の外側に表示された識別信号Siとを対比しながら、型枠２の内側のコンクリート充填状況を確認することができる。また、記憶手段26に記憶した各電子タグユニット10iの取り付け部位Pi及び識別信号Siに基づき、読み取りの停止した識別信号Siの電子タグユニット10iの取り付け部位Piを読み取り停止部位検出手段28により検出し、その取り付け部位Piを表示手段29によりディスプレイ24に表示することができる。この場合作業員は、ディスプレイ24に表示された読み取り停止部位Piを観察することにより、型枠２の内側のコンクリート充填状況を確認できる。 Then, when concrete is placed in the mold 2 or immediately after filling, the identification signal Si of each electronic tag unit 10i is repeatedly read by the reading means 27, and the identification signal Si whose reading is stopped is detected. As shown in FIG. 1D, the stop of reading of the identification signal Si indicates that the electronic tag unit 10i that transmits the identification signal Si is immersed in the liquid material C and the water stop cover 18 is broken or dissolved. . The identification signal Si whose reading has been stopped is displayed on the display 24 by the display means 29, so that the worker outside the mold 2 is displayed on the outside of the mold 2 and the identification signal Si displayed on the display 24. The concrete filling condition inside the mold 2 can be confirmed while comparing with the identification signal Si. Further, based on the attachment site Pi of each electronic tag unit 10i and the identification signal Si stored in the storage unit 26, the reading site detection unit 28 detects the attachment site Pi of the electronic tag unit 10i of the identification signal Si that has been stopped to be read. The attachment site Pi can be displayed on the display 24 by the display means 29. In this case, the operator can confirm the concrete filling state inside the mold 2 by observing the reading stop site Pi displayed on the display 24.

本発明によれば、液状物質Ｃを充填する空隙１内の必要な部位に電子タグユニット10を取り付けるだけで、空隙１内の液状物質Ｃの充填状況をリアルタイムに確認することができ、空隙１内の全域に多数の電子タグユニット10を取り付けることにより空隙１内の全体的な充填分布等を確認することができる。また、空隙１内の特定部位に複数の電子タグユニット10を相互に近接させて取り付けることにより、たとえ一部分の電子タグユニット10に故障等が発生した場合でも、充填状況を確認できる。 According to the present invention, the state of filling of the liquid substance C in the gap 1 can be confirmed in real time simply by attaching the electronic tag unit 10 to a necessary portion in the gap 1 filled with the liquid substance C. By attaching a large number of electronic tag units 10 over the entire area, it is possible to confirm the overall filling distribution and the like in the gap 1. In addition, by attaching a plurality of electronic tag units 10 close to each other in a specific part in the gap 1, even if a failure or the like occurs in a part of the electronic tag units 10, the filling state can be confirmed.

こうして本発明の目的である「広範囲にわたる空隙内の充填状況を簡単に確認できる充填確認方法及びシステム」の提供を達成することができる。 Thus, it is possible to achieve the “filling confirmation method and system capable of easily confirming the filling state in a wide range of voids”, which is an object of the present invention.

以上、型枠２で囲まれた空隙１にコンクリートＣを充填する場合について説明したが、本発明の充填確認システムは、目視で確認できない様々な空隙内の液状物質の充填確認に利用することができる。図２は、プレストレス・コンクリート構造（以下、ＰＣ構造という）において、シース部４に通したＰＣ鋼棒５の周囲の空隙１にグラウトＣを注入する場合に適用した実施例を示す。図示例では、シース部４の内面（グラウト打設面）4aに図４のような電子タグユニット10を取り付け、シース部４に通したＰＣ鋼棒５に張力Ｆを加えながらＰＣ鋼棒５とシース４との空隙１にグラウトＣを注入し、その注入時の充填状況をシース部４の外側に設けた充填検出装置20で確認している。同図（Ｄ）に示すように、例えばシース部４の環状壁面内に電子タグユニット10を埋め込むことができるが、図１（Ｃ）のようにシース部４の内面4aに電子タグユニット10を貼り付けてもよい。また、シース部４だけでなく、ＰＣ鋼棒５の表面に電子タグユニット10を取り付けることも可能である。 As mentioned above, although the case where the concrete C was filled in the space | gap 1 enclosed with the formwork 2 was demonstrated, the filling confirmation system of this invention can be utilized for the filling confirmation of the liquid substance in the various space | gaps which cannot be confirmed visually. it can. FIG. 2 shows an embodiment applied to the case where the grout C is injected into the gap 1 around the PC steel rod 5 passed through the sheath portion 4 in a prestressed concrete structure (hereinafter referred to as PC structure). In the illustrated example, an electronic tag unit 10 as shown in FIG. 4 is attached to the inner surface (grouting surface) 4a of the sheath portion 4, and the PC steel rod 5 and the PC steel rod 5 are applied while applying tension F to the PC steel rod 5 passed through the sheath portion 4. Grout C is injected into the gap 1 with the sheath 4 and the filling state at the time of the injection is confirmed by a filling detection device 20 provided outside the sheath portion 4. As shown in FIG. 1D, for example, the electronic tag unit 10 can be embedded in the annular wall surface of the sheath portion 4, but the electronic tag unit 10 is attached to the inner surface 4a of the sheath portion 4 as shown in FIG. It may be pasted. Further, it is possible to attach the electronic tag unit 10 to the surface of the PC steel bar 5 as well as the sheath portion 4.

従来、図２のようなＰＣ構造のシース部４へのグラウトＣの充填をリアルタイムに確認する適当な方法がなかったため、流動性を高めたグラウトＣを使用した場合でもシース部４の内面に空気が残留し、グラウト施工後にＸ線等の大型計測機器を用いた検査によって始めて確認され、施工後の対処に手間がかかることが経験されている。本発明によれば、図２（Ｂ）及び（Ｃ）に示すようにシース部４の周囲及び長さ方向の全体にわたり多数の電子タグユニット10を配置しておくことにより、シース部４内の全体的な充填状況を容易にリアルタイムで確認し、グラウトＣの注入時又は直後に未充填部位から適当な方法で残留空気を取り除くことができる。 Conventionally, there has been no appropriate method for confirming in real time the filling of the grout C in the sheath portion 4 having the PC structure as shown in FIG. 2, so even when the grout C having improved fluidity is used, air is not formed on the inner surface of the sheath portion 4. It is confirmed for the first time by inspection using a large measuring instrument such as X-rays after grout construction, and it has been experienced that it takes time to deal with it after construction. According to the present invention, as shown in FIGS. 2 (B) and 2 (C), by arranging a large number of electronic tag units 10 around the sheath portion 4 and over the entire length direction, The overall filling status can be easily confirmed in real time, and residual air can be removed from the unfilled portion by an appropriate method during or immediately after the injection of grout C.

図３は、本発明の充填確認システムを、シールド掘削機で地盤中に掘削したトンネルの周囲を覆工するシールドセグメント７と周囲地盤Ｅとの間の空隙１に、裏込め材であるグラウトＣを充填する場合に適用した実施例を示す。シールドセグメント７と周囲地盤Ｅとの間の空隙１に裏込め材Ｃの未充填部分があるとトンネル上方の地盤沈下等の原因となりうるため、従来は裏込め材Ｃの注入量又は注入圧力等から空隙１内の充填を確認しているが、目視できない空隙１内の全体的な充填状況は十分に確認できていないのが現実である。 FIG. 3 shows the filling confirmation system according to the present invention, in the gap 1 between the shield segment 7 covering the periphery of the tunnel excavated in the ground with a shield excavator and the surrounding ground E, grout C which is a backfilling material. The example applied when filling is shown. If there is an unfilled portion of the backfill material C in the gap 1 between the shield segment 7 and the surrounding ground E, it may cause ground subsidence or the like above the tunnel. From the above, the filling in the void 1 is confirmed, but the actual filling state in the void 1 that cannot be visually confirmed is not sufficiently confirmed.

図３の実施例では、同図（Ｂ）に示すように、シールドセグメント７の周囲地盤との対向面7aに電子タグユニット10を取り付け、シールドセグメント７と周囲地盤Ｅとの間の空隙１への裏込め材Ｃの充填状況を、セグメント７で覆工されたトンネル内部又はシールド掘削機の内部に設けた充填検出装置20によりリアルタイムに確認している。例えば図４のような台座19付きの電子タグユニット10を使用することも可能であるが、図示例では、セグメント７の地盤対向面7aに穿った止水カバー18b付きの窪み８内に電子タグ本体11を封入している。この場合、窪み８の蓋となる止水カバー18の強度（曲げ強さ）を、裏込め材Ｃの充填時にセグメント７の地盤対向面7aに加わる圧力の曲げモーメントによって破壊されるように設計しておくことにより、裏込め材Ｃの充填に応じて止水カバー18bを破壊して電子タグ本体11の送信機能を停止させることができる（図３（Ｄ）参照）。裏込め材Ｃが地盤対向面7aに加える圧力は、裏込め材Ｃの組成等に応じて予め試験的又は実験的に求めることができる。 In the embodiment of FIG. 3, as shown in FIG. 3B, the electronic tag unit 10 is attached to the surface 7 a facing the surrounding ground of the shield segment 7, and the gap 1 between the shield segment 7 and the surrounding ground E is reached. The filling state of the backfill material C is confirmed in real time by a filling detection device 20 provided in the tunnel covered with the segment 7 or in the shield excavator. For example, an electronic tag unit 10 with a pedestal 19 as shown in FIG. 4 can be used. However, in the illustrated example, an electronic tag is placed in a recess 8 with a water stop cover 18b formed in the ground facing surface 7a of the segment 7. The main body 11 is enclosed. In this case, the strength (bending strength) of the water-stop cover 18 serving as the lid of the recess 8 is designed to be destroyed by the bending moment of the pressure applied to the ground facing surface 7a of the segment 7 when the backfill material C is filled. Accordingly, the water stop cover 18b can be broken in accordance with the filling of the backfill material C, and the transmission function of the electronic tag main body 11 can be stopped (see FIG. 3D). The pressure applied by the backfilling material C to the ground facing surface 7a can be determined in advance experimentally or experimentally according to the composition of the backfilling material C or the like.

止水カバー18は、窪み８の入口を防水する例えばプラスチック製の蓋とすることができる。窪み８及び止水カバー18の大きさＷ（図３（Ｃ）参照）は、できるだけ小さい方が望ましいが、裏込め材Ｃの充填圧力に応じて止水カバー18が破壊されるように、適当に選択することができる。また窪み８の深さｄ（図３（Ｃ）参照）は、セグメント７の厚さ（Ｄ−ｄ）を介して識別信号Si及び／又は読み出し信号Ｒが届くように、適当に設計することができる。この場合、窪み８の周囲が強度的な弱点とならないように、鉄筋等で補強することが望ましい。セグメント７の厚さＤが大きい場合は、トンネル内部の充填検出装置20に識別信号Siが届かないことも考えられるので、識別信号Siの読み取り距離ができるだけ長い電子タグユニット10を使用することが望ましく、例えば電池等を内蔵したアクティブ型の電子タグユニット10を利用してもよい。アクティブ型の電子タグユニット10は、電池の寿命後はパッシブ型の電子タグユニット10として利用することができるので、施工後に無線による不具合はなくなる。また、パッシブ型のメモリーに資材情報等を保管することもできる。 The water-stop cover 18 can be, for example, a plastic lid that waterproofs the entrance of the recess 8. The size W of the recess 8 and the water stop cover 18 (see FIG. 3C) is preferably as small as possible, but is appropriate so that the water stop cover 18 is destroyed in accordance with the filling pressure of the backfill material C. Can be selected. Further, the depth d of the recess 8 (see FIG. 3C) can be appropriately designed so that the identification signal Si and / or the read signal R can reach through the thickness (D-d) of the segment 7. it can. In this case, it is desirable to reinforce with a reinforcing bar or the like so that the periphery of the recess 8 does not become a strong weak point. When the thickness D of the segment 7 is large, it is considered that the identification signal Si does not reach the filling detection device 20 inside the tunnel. Therefore, it is desirable to use the electronic tag unit 10 having the longest reading distance of the identification signal Si. For example, an active electronic tag unit 10 incorporating a battery or the like may be used. Since the active type electronic tag unit 10 can be used as the passive type electronic tag unit 10 after the battery has reached the end of its life, there are no problems caused by radio after construction. In addition, material information and the like can be stored in a passive memory.

本発明の一実施例の説明図である。It is explanatory drawing of one Example of this invention. 本発明の他の実施例の説明図である。It is explanatory drawing of the other Example of this invention. 本発明の更に他の実施例の説明図である。It is explanatory drawing of other Example of this invention. 本発明で用いる電子タグユニットの一例の説明図である。It is explanatory drawing of an example of the electronic tag unit used by this invention. 電子タグ本体と充填検出装置との通信方法の一例の説明図である。It is explanatory drawing of an example of the communication method of an electronic tag main body and a filling detection apparatus. 従来の充填検出センサの説明図である。It is explanatory drawing of the conventional filling detection sensor.

Explanation of symbols

１…空隙 1a…空隙内面
２…コンクリート型枠 2a…コンクリート打設面
３…鉄筋４…シース
4a…グラウト打設面５…ＰＣ鋼棒
６…止め部材７…シールドセグメント
7a…裏込め材打設面８…窪み
10…電子タグユニット 11…電子タグ本体
12…アンテナ 13…ＩＣ回路
14…電源回路 15…制御回路
16…記憶回路 17…送受信回路
18…カバー 18a…止水カバー
18b…止水（防水）カバー 18c…止水膜
19…台座 19a…底部
19b…脚部 19c…間隙
19d…接着材
20…充填検出装置 21…アンテナ
22…送受信部 23…電源部
24…ディスプレイ 25…制御部
26…記憶手段 27…読み取り手段
28…読み取り停止部位検出手段
29…表示手段
40…電極 41、42…電気接点
43…絶縁シート 44…リード線（ケーブル線）
45…導電検出素子 46…電源
47…空気溜まり 48…空気抜き孔
Ａ…空気Ｃ…液状物質
Ｄ…セグメントの厚さｄ…孔の深さ
Ｅ…地盤Ｆ…張力
Ｒ…読み出し信号Ｓ…識別信号
Ｗ…孔の幅 DESCRIPTION OF SYMBOLS 1 ... Gap 1a ... Gap inner surface 2 ... Concrete formwork 2a ... Concrete placement surface 3 ... Reinforcement 4 ... Sheath
4a ... Grouting surface 5 ... PC steel bar 6 ... Stopping member 7 ... Shield segment
7a ... Backfill material placement surface 8 ... Dimple
10… Electronic tag unit 11… Electronic tag body
12 ... Antenna 13 ... IC circuit
14 ... Power supply circuit 15 ... Control circuit
16 ... Memory circuit 17 ... Transceiver circuit
18 ... Cover 18a ... Water stop cover
18b ... Water stop (waterproof) cover 18c ... Water stop membrane
19 ... pedestal 19a ... bottom
19b ... Leg 19c ... Gap
19d… Adhesive
20 ... Filling detector 21 ... Antenna
22 ... Transceiver 23 ... Power supply
24… Display 25… Control unit
26 ... Storage means 27 ... Reading means
28 ... Reading stop detection means
29 ... Display means
40 ... Electrode 41, 42 ... Electric contact
43… Insulation sheet 44… Lead wire (cable wire)
45… Conductivity detection element 46… Power supply
47 ... Air reservoir 48 ... Air vent hole A ... Air C ... Liquid substance D ... Segment thickness d ... Hole depth E ... Ground F ... Tension R ... Read signal S ... Identification signal W ... Hole width

Claims

An electronic tag unit having an IC circuit and an antenna for transmitting a radio identification signal to each of a plurality of predetermined sites in the gap for injecting the liquid substance and losing the transmission function due to contact or pressure of the liquid substance is attached, and each outside the gap is attached. The identification signal of the electronic tag unit is repeatedly read, and the filling of the liquid substance into the attachment part of the electronic tag unit of the identification signal is confirmed by the identification signal stopped when the liquid substance is injected into the gap or later. Filling confirmation method using electronic tags.

2. The filling confirmation method according to claim 1, wherein the electronic tag unit includes an electronic tag main body having the IC circuit and an antenna and a water stop cover of the electronic tag main body dissolved or destroyed by contact or pressure of the liquid substance. A filling confirmation method using an electronic tag.

3. The filling confirmation method according to claim 2, wherein the electronic tag unit includes a waterproof cover that covers the electronic tag main body and a pedestal that supports one end or both ends of the waterproof cover in a cantilevered or fixed beam shape on the inner surface of the gap. In addition, a method for confirming filling using an electronic tag, in which the waterstop cover is broken by pressure applied to the inner surface of the gap when the liquid material is filled.

3. The filling confirmation method according to claim 2, wherein the electronic tag main body is sealed in a recess with a water stop cover formed in the inner surface of the gap, and the water stop cover is broken by pressure applied to the inner surface of the gap when filled with a liquid substance. A filling confirmation method using an electronic tag.

The filling confirmation method according to any one of claims 2 to 4, wherein the electronic tag main body is a passive electronic tag that is activated by a wireless readout signal from the outside of the gap and transmits a wireless identification signal. Method.

A group of electronic tag units having an IC circuit for transmitting a radio identification signal and an antenna and attached to a plurality of predetermined sites in a gap for injecting a liquid material and losing a communication function due to contact or pressure of the liquid material, and the respective electrons A filling confirmation system using an electronic tag, comprising a filling detection device having reading means for repeatedly reading an identification signal of a tag unit and display means for displaying an identification signal stopped by the reading means.

7. The system according to claim 6, wherein the filling detecting means detects a mounting portion of each electronic tag unit and an identification signal, and a mounting portion of the electronic tag unit of the identification signal stopped by the reading means. An electronic tag-use filling confirmation system provided with a reading stop site detecting means.

8. The system according to claim 6, wherein the electronic tag unit includes an electronic tag main body having the IC circuit and an antenna and a water stop cover of the electronic tag main body that is dissolved or destroyed by contact or pressure of the liquid substance. A filling confirmation system using electronic tags.

The system according to claim 6 or 7, wherein the electronic tag unit includes a water stop cover that covers the electronic tag main body and a pedestal that supports one end or both ends of the water stop cover in a cantilevered or fixed beam shape on the inner surface of the gap. In addition, a filling confirmation system using an electronic tag that has a strength that can be broken by the pressure applied to the inner surface of the air gap when the liquid cover is filled with the liquid material.

The system according to claim 6 or 7, wherein the electronic tag main body is enclosed in a recess with a water stop cover formed in the inner surface of the air gap, and the water stop cover is broken by pressure applied to the inner surface of the air gap when filled with a liquid substance. A filling confirmation system using electronic tags.

In a concrete form surrounding a void in which concrete is placed, it is dissolved or destroyed by contact or pressure between the electronic tag body having an IC circuit and an antenna for transmitting a radio identification signal and the concrete on the surface on which the concrete is placed. A concrete formwork to which an electronic tag unit having a water stop cover of the electronic tag main body is attached.

12. The formwork according to claim 11, wherein the electronic tag unit supports a water stop cover that covers the electronic tag main body and one or both ends of the water stop cover in a cantilevered or fixed beam shape on a concrete placing surface. A concrete formwork including a pedestal and having a strength to be destroyed by pressure applied to the concrete placing surface when filling the concrete with the waterstop cover.

In a segment that covers a shield tunnel excavated in the ground and injects a backfill material into a gap between the ground and the surrounding ground, an IC circuit and an antenna for transmitting a radio identification signal are provided on a surface facing the surrounding ground. A segment for a shield tunnel to which an electronic tag unit having an electronic tag main body and a water stop cover of the electronic tag main body that is dissolved or destroyed by contact or pressure of the backfill material is attached.

14. The segment according to claim 13, wherein the electronic tag main body is enclosed in a recess with a water stop cover formed in the ground facing surface, and the water stop cover is broken by pressure applied to the ground facing surface when the backfill material is filled. As a shield tunnel segment.