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JP2001115657A - Method for repairing concrete structure - Google Patents

Method for repairing concrete structure

Info

Publication number
JP2001115657A
JP2001115657A JP32862799A JP32862799A JP2001115657A JP 2001115657 A JP2001115657 A JP 2001115657A JP 32862799 A JP32862799 A JP 32862799A JP 32862799 A JP32862799 A JP 32862799A JP 2001115657 A JP2001115657 A JP 2001115657A
Authority
JP
Japan
Prior art keywords
accumulator
pressure water
water jet
closing valve
jet
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
JP32862799A
Other languages
Japanese (ja)
Inventor
Tsutomu Koizumi
勉 小泉
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.)
YUAAZU KK
Original Assignee
YUAAZU KK
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 YUAAZU KK filed Critical YUAAZU KK
Priority to JP32862799A priority Critical patent/JP2001115657A/en
Publication of JP2001115657A publication Critical patent/JP2001115657A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/04Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for treating only selected parts of a surface, e.g. for carving stone or glass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24CABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B24C1/006Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material without particles or pellets for deburring, removal of extended surface areas or jet milling of local recessions, e.g. grooves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method and a device for repairing a concrete structure by crushing, breaking and removing a part to be removed by injecting a super- high pressure water jet or pulse jet. SOLUTION: A piston 4 partitioning a gas chamber is built in an accumulator 6. The piston 4 compresses the gas chamber when high-pressure water jet is supplied, and opens a poppet type instantaneous opening and closing valve 5 located on the opposite side to the accumulator 6 to inject the high-pressure water jet. It keeps the pressure when the pulse jet is injected, and also acts as a spring for keeping discharge flow rate at the maximum. A series of devices is loaded on a working vehicle with boom, and the accumulator, the instantaneous opening and closing valve, and a nozzle injection parts are integrated and set on the tip of the working vehicle boom.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業の利用分野】コンクリート構造物の補修法に関す[Industrial applications] Regarding repair methods for concrete structures

【0002】[0002]

【従来の技術】コンクリート構造物の強度不足箇所、崩
落・剥落の危険のある箇所の補修をする方法としては、
健全な部分まで破壊したり、ひびを入れたりする恐れが
あるため大型の建設機械は使用が制限され、小型の電動
ピック乃至エアーピック、ハンマーなどで除去して新し
いコンクリートをその部分に打設し補修するか、又は、
検査で強度不足部又は浮部が特定出来きた部分に、補強
のための鋼材を躯体にボルト止めして補修する応急的な
補修方法がとられている。これらの方法はトンネルのよ
うな大型構造物のコールドジョイント部の強度不足部又
は浮部で大きな部分を除去し補修を要する部分には能力
的に適用に無理があり、又、鉄道高架橋の下部のような
箇所での作業では、常に浮部の突然の崩落による事故の
危険が付き纏い、又、上向きに天井部の作業になるため
作業効率が極端に落ちる欠点があった
2. Description of the Related Art As a method for repairing a portion of a concrete structure having insufficient strength and a portion where there is a danger of falling or peeling,
The use of large construction machines is limited due to the risk of breaking or cracking sound parts, and small concrete picks or pneumatic picks, hammers, etc. are used to remove new concrete into the parts. Repair it, or
An emergency repair method has been adopted in which a steel material for reinforcement is bolted to a skeleton to repair a portion where a strength lacking portion or a floating portion has been identified by inspection. These methods cannot be applied to parts where large joints such as tunnels are required to be repaired by removing large portions of cold joints with insufficient strength or floating parts. When working in such places, there is always the danger of an accident due to sudden collapse of the floating part, and the work efficiency is extremely reduced because the work is done on the ceiling upward.

【0003】[0003]

【考案が解決しようとする課題】コンクリート構造物の
強度不足部、浮部の要補修箇所に超高圧パルスジェット
を至近距離で、離れたところからの操作で噴射すること
により、従来の技術の欠点を解決する
[Problems to be Solved by the Invention] The disadvantages of the conventional technology by injecting an ultra-high pressure pulse jet from a remote place at a short distance to a part of a concrete structure where the strength is insufficient or where a floating part is required to be repaired. Solve

【0004】[0004]

【課題を解決するための手段】1.超高圧発生用の圧力
150−300MPA、吐出量5−30リットル/分の
超高圧ポンプを用いる尚、圧力、吐出量は必ずしもこの
範囲に限られるものではない 2.発生された超高圧水は超高圧ホースを介して、吐出
部にポペット開閉式瞬間開閉バルブを持ち、反対側にガ
スの入った室を仕切るピストン部を持つアキュミュレー
ターに蓄圧貯蔵される 3.前項ポペットの開閉は圧縮空気作動、又は、電磁気
式作動とする 4.瞬間開閉バルブには離れた場所から操作できるよう
に、操作用圧縮空気パイロット配管、又は、操作電気ケ
ーブルが取り付けられ、又、その先口には所定のノズル
の付いたノズル噴射部が取り付けられ、アキュミュレー
ターと一体となって、通常、作業車ブームの先端部に設
置される
[Means for Solving the Problems] An ultrahigh pressure pump for generating an ultrahigh pressure at a pressure of 150 to 300 MPa and a discharge rate of 5 to 30 liters / minute is used. The pressure and the discharge rate are not necessarily limited to these ranges. The generated ultrahigh-pressure water is stored in the accumulator via an ultrahigh-pressure hose in an accumulator that has a poppet opening / closing instant opening / closing valve at the discharge section and a piston section on the opposite side that partitions the gas-containing chamber. 3. Opening and closing the poppet shall be operated by compressed air or electromagnetic. An operating compressed air pilot pipe or an operating electric cable is attached to the instant opening / closing valve so that it can be operated from a remote place, and a nozzle injection part with a predetermined nozzle is attached to the front end thereof, Integral with the accumulator, usually installed at the tip of the work vehicle boom

【0005】[0005]

【作用】1.アキュミュレーターに蓄えられた超高圧水
はその吐出部に取り付けられた瞬間開閉バルブの開放に
よりパルスジェットとなり、対象コンクリートに向かっ
て至近距離開より噴射される 2.この際、瞬間開閉バルブの開放作動の瞬間、圧縮さ
れたガス室のピストンが作動して押し付けスプリングの
作用をし、アキュミュレーター内に蓄圧されている超高
圧ウオータージェットが突出する際に、圧力降下を防止
して、しかも、吐出量を減衰させずに、ノズル噴出部よ
りパルスジェットとして噴射させる 3.パルスジェットの噴射を受けたコンクリート構造物
の強度不足部、又は、浮部はパルスジェットの持つ莫大
なエネルギーにより破砕・破壊され、除去される 4.パルスジェットの噴射後は瞬間開閉バルブを閉め、
再度アキュミュレーターに超高圧ポンプより発生された
超高圧水を蓄積することにより繰り返し作業出来る
[Action] The ultra-high pressure water stored in the accumulator becomes a pulse jet by opening the instantaneous opening / closing valve attached to the discharge part, and is jetted from the close distance to the target concrete. At this moment, at the moment of opening of the instant opening / closing valve, the piston of the compressed gas chamber operates to act as a pressing spring, and when the ultra-high pressure water jet stored in the accumulator projects, the pressure is increased. 2. Prevent lowering and, without attenuating the discharge amount, inject as a pulse jet from the nozzle ejection section. 3. Insufficient or floating parts of concrete structures that have been subjected to pulse jet injection are crushed and destroyed by the enormous energy of pulse jets and removed. After the injection of the pulse jet, close the instant opening and closing valve,
Work can be repeated by accumulating the ultra-high pressure water generated by the ultra-high pressure pump in the accumulator again

【0006】[0006]

【実施例】実施例について、図面を参照して説明する
と、 イ.図1に於いて、超高圧ポンプ(1)は通常ジーゼル
エンジン(2)によって駆動され、発生した超高圧ウオ
ータージェットは超高圧ホース(3)を介して、後続の
機器に導かれる ロ.図2に於いて、奥にガス室ピストン(4)を有し、
瞬間開閉バルブ部(5)を持つアキュミュレーター
(6)に前項記載の超高圧ホース(3)によって、超高
圧ウオータージェットが導かれ、瞬間開閉バルブ(5)
が閉の状態で、ガス室ピストン(4)を押しながら所定
圧に達するまで蓄積されるハ.ガス室ピストン(4)の
ガス充填室には通常窒素ガスが充填され、アキュミュレ
ーター(6)内に超高圧ウオータージェットが供給さ
れ、次第に圧力が上がると、ガス充填室を仕切っている
ガス室ピストン(4)がガスを圧縮する方向へ移動する
ガス充填室には、圧力計(9)が取り付けられる ニ.同じく図2に於いて、所定圧に昇圧された超高圧ウ
オータージェットは、瞬間開閉バルブ部(5)に接続さ
れているバルブ開閉コントロール(8)による開放操作
により、その吐出部に設けられたノズル噴射部(7)よ
り瞬間的に大流量超高圧ウオータージェットがパルスジ
ェットとなり大きなエネルギーをもって対象物のコンク
リート構造物に向けて至近距離で噴射され、強度不足
部、又は、浮部を破砕・破壊して除去する ホ.バルブ開閉コントロール(8)は、操作用電気ケー
ブル、操作用圧縮空気などにより、離れた位置より操作
出来、開いたり、閉じたりすることにより、繰り返し作
業出来る ヘ.図3に於いて、通常の工事現場に於いて使用される
設備の構成を示す超高圧ポンプ(1)はジーゼルエンジ
ン(2)とセットになって作業ブーム(10)付き作業
車の荷台に搭載され、発生された超高圧ウオータージェ
ットは作業ブーム(10)の先端部に取り付けられたア
キュミュレーター(6)に超高圧ホース(3)を介して
送って、蓄えられるノズル噴射部(7)を作業箇所に近
付けた後、バルブ開閉コントロール(8)操作し瞬間開
閉バルブ(5)を開放することによりパルスジェットを
発生させ、ノズル噴射部(7)を通じて噴射し作業する ト.バルブ開閉コントロール(8)を操作し、瞬間開閉
バルブ(5)を閉じることにより、再度、超高圧ウオー
タージェットがアキュミュレーター(6)に蓄えられ、
作業箇所を移動しながら、パルスジェットによるコンク
リート強度不足部や浮部を破砕・破壊し除去作業が繰り
返し出来る
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments will be described with reference to the drawings. In FIG. 1, the ultra-high pressure pump (1) is usually driven by a diesel engine (2), and the generated ultra-high pressure water jet is guided to subsequent equipment via an ultra-high pressure hose (3). In FIG. 2, there is a gas chamber piston (4) at the back,
The ultrahigh-pressure water jet is guided to the accumulator (6) having the instantaneous opening / closing valve section (5) by the ultrahigh pressure hose (3) described above, and the instantaneous opening / closing valve (5) is provided.
In a closed state, the pressure is accumulated until a predetermined pressure is reached while pressing the gas chamber piston (4). The gas filling chamber of the gas chamber piston (4) is usually filled with nitrogen gas, an ultra-high pressure water jet is supplied into the accumulator (6), and when the pressure gradually increases, the gas chamber dividing the gas filling chamber A pressure gauge (9) is attached to the gas filling chamber in which the piston (4) moves in the direction of compressing the gas. Similarly, in FIG. 2, the ultra-high pressure water jet pressurized to a predetermined pressure is opened by a valve opening / closing control (8) connected to an instantaneous opening / closing valve section (5). The high flow ultra-high pressure water jet instantaneously becomes a pulse jet from the injection unit (7) and is injected with a large energy toward the target concrete structure at a short distance, crushing and destroying the insufficient strength part or the floating part. E. The valve opening / closing control (8) can be operated from a remote position by operating electric cables, operating compressed air, etc., and can be repeatedly operated by opening and closing. In FIG. 3, an ultra-high pressure pump (1) showing a configuration of equipment used in a normal construction site is mounted on a carrier of a work vehicle with a work boom (10) as a set together with a diesel engine (2). The generated ultra-high pressure water jet is sent via an ultra-high pressure hose (3) to an accumulator (6) attached to the tip of the work boom (10), and the stored nozzle jet (7) is sent to the accumulator (6). After approaching the work place, operate the valve opening / closing control (8) to open the instantaneous opening / closing valve (5) to generate a pulse jet and spray it through the nozzle spraying section (7). G. By operating the valve opening / closing control (8) and closing the instant opening / closing valve (5), the ultra-high pressure water jet is again stored in the accumulator (6),
While moving the work site, the crushing and destruction of the concrete strength insufficient part and floating part by pulse jet can be repeated and the removal work can be repeated

【0007】[0007]

【発明の効果】本発明は以上に説明したように構成され
ているので、以下に記載されるような効果を奏する イ.アキュミュレーター(6),瞬間開閉バルブ
(5)、及び、ノズル噴射部(7)と一体に纏めて、作
業車ブームの先端部に近いところに設置し、その部分に
超高圧ウオータージェットを蓄え、しかも、コンクリー
トの作業箇所の至近距離でパルスジェットを噴射できる
ため、エネルギーの減衰が極めて少ない ロ.パルスジェットを噴射する操作はバルブ開閉コント
ロール(8)により、離れた位置で行えるため、コンク
リートの落下事故に遭遇する危険が少なく、安全な作業
が出来る ハ.パルスジェットの性質として、強度の弱い部分に集
中して作用するため、健全なコンクリート部を痛めず、
又、にクラックなどの発生がほとんど起こらないばかり
か、露出鉄筋の錆びまで洗浄して落ちる ニ.本工法の設備の規模を大型化すれば、トンネル、原
子力の放射能遮蔽用コンクリート構造物などの大型構築
物の補修または解体作業に使用できる ホ.作業車搭載のため、可搬性がある
Since the present invention is configured as described above, the following effects can be obtained. Integrated with the accumulator (6), the instant opening / closing valve (5), and the nozzle injection part (7), it is installed near the tip of the work vehicle boom, and stores the ultra-high pressure water jet in that part. In addition, since the pulse jet can be jetted at a very short distance from the concrete work site, the energy attenuation is extremely low. The operation of injecting the pulse jet can be performed at a remote location by the valve opening / closing control (8), so there is little danger of falling concrete and the work can be done safely. As the nature of the pulse jet, it concentrates on the weak parts and does not damage the healthy concrete part.
In addition, not only cracks and the like hardly occur, but also rust on the exposed reinforcing steel is washed off. If the scale of the equipment of this method is increased, it can be used for repairing or dismantling large structures such as tunnels and concrete structures for shielding nuclear radiation. Portable due to work vehicle mounting

【0008】[0008]

【図面の簡単な説明】[Brief description of the drawings]

【図1】は超高圧ポンプ(1)とそれの駆動装置である
ジーゼルエンジン(2)のセットされた構成を示す概念
FIG. 1 is a conceptual diagram showing a set configuration of an ultra-high pressure pump (1) and a diesel engine (2) as a driving device thereof.

【図2】はアキュミュレーター(6)の構造と関連部分
の各部の取り付け状況を示す断面図
FIG. 2 is a sectional view showing a structure of an accumulator (6) and a mounting state of each part of a related part.

【図3】はコンクリート構造物の補修法を示す見取り図FIG. 3 is a sketch showing a method of repairing a concrete structure.

【符号の説明】[Explanation of symbols]

1 超高圧ポンプ 2 ジーゼルエンジン 3 超高圧ホース 4 ガス室ピストン 5 瞬間開閉バルブ 6 アキュミュレーター 7 ノズル噴射部 8 バルブ開閉コントロール 9 圧力計 10 作業車ブーム Reference Signs List 1 super high pressure pump 2 diesel engine 3 super high pressure hose 4 gas chamber piston 5 momentary opening / closing valve 6 accumulator 7 nozzle injection unit 8 valve opening / closing control 9 pressure gauge 10 work vehicle boom

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) E04F 21/00 E04F 21/00 D E21D 11/10 E21D 11/10 Z ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) E04F 21/00 E04F 21/00 D E21D 11/10 E21D 11/10 Z

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】コンクリート構造物の強度不足部又は浮部
を粉砕、破砕して除去するために、パルスジェット(衝
撃圧駆動型高速水噴流)を至近距離で噴射して当てるこ
と特徴とするコンクリート構造物の補修方法
1. A concrete structure characterized by injecting a pulse jet (impact pressure driven high-speed water jet) at a short distance in order to crush, crush and remove the insufficient strength portion or floating portion of a concrete structure. How to repair structures
【請求項2】請求項1記載のパルスジェットを大量に瞬
間発生させるためにガス室ピストン(4)を有し、吐出
部にポペット式瞬間開閉バルブ(5)を持つアキュミュ
レーター(6)を構成機器とすることを特徴とする装置
2. An accumulator (6) having a gas chamber piston (4) for instantaneously generating a large amount of the pulse jet according to claim 1 and having a poppet type instant opening / closing valve (5) at a discharge portion. Apparatus characterized by constituting equipment
JP32862799A 1999-10-14 1999-10-14 Method for repairing concrete structure Pending JP2001115657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32862799A JP2001115657A (en) 1999-10-14 1999-10-14 Method for repairing concrete structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32862799A JP2001115657A (en) 1999-10-14 1999-10-14 Method for repairing concrete structure

Publications (1)

Publication Number Publication Date
JP2001115657A true JP2001115657A (en) 2001-04-24

Family

ID=18212389

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32862799A Pending JP2001115657A (en) 1999-10-14 1999-10-14 Method for repairing concrete structure

Country Status (1)

Country Link
JP (1) JP2001115657A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2850298A1 (en) * 2003-01-28 2004-07-30 Commissariat Energie Atomique Pulsed supersonic gas flow injector for use in study of thermonuclear fusion plasmas has first chamber with gas under pressure on either side of free piston
JP2005036576A (en) * 2003-07-18 2005-02-10 Pacific Consultants Co Ltd Diagnostic method of deteriorated concrete by water jet
WO2007138661A1 (en) * 2006-05-26 2007-12-06 Mitsuru Yamauchi Cutting apparatus
JP2008272933A (en) * 2008-08-18 2008-11-13 Mitsuru Yamauchi Severance and cutting device
CN102906371A (en) * 2010-03-25 2013-01-30 拉塞尔矿物设备私人有限公司 Pulsed water-jet apparatus
CN105909276A (en) * 2016-05-31 2016-08-31 中铁第五勘察设计院集团有限公司 Multifunctional construction trolley for emergency repair of operating railway tunnel trunk collapse
CN112523468A (en) * 2019-09-17 2021-03-19 广东博智林机器人有限公司 High-pressure water napping robot

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2850298A1 (en) * 2003-01-28 2004-07-30 Commissariat Energie Atomique Pulsed supersonic gas flow injector for use in study of thermonuclear fusion plasmas has first chamber with gas under pressure on either side of free piston
WO2004071138A1 (en) * 2003-01-28 2004-08-19 Commissariat A L'energie Atomique Device for injection of a pulsed supersonic gas stream
US7093774B2 (en) 2003-01-28 2006-08-22 Commissariat A L'energie Atomique Device for injecting a pulsed supersonic gas stream
JP2005036576A (en) * 2003-07-18 2005-02-10 Pacific Consultants Co Ltd Diagnostic method of deteriorated concrete by water jet
WO2007138661A1 (en) * 2006-05-26 2007-12-06 Mitsuru Yamauchi Cutting apparatus
JP2008272933A (en) * 2008-08-18 2008-11-13 Mitsuru Yamauchi Severance and cutting device
CN102906371A (en) * 2010-03-25 2013-01-30 拉塞尔矿物设备私人有限公司 Pulsed water-jet apparatus
EP2550430A4 (en) * 2010-03-25 2014-03-05 Russell Mineral Equipment Pty Ltd Pulsed water-jet apparatus
CN105909276A (en) * 2016-05-31 2016-08-31 中铁第五勘察设计院集团有限公司 Multifunctional construction trolley for emergency repair of operating railway tunnel trunk collapse
CN112523468A (en) * 2019-09-17 2021-03-19 广东博智林机器人有限公司 High-pressure water napping robot

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