JP2012202082A - Method for constructing cutoff work space and caisson for cutoff work - Google Patents

Method for constructing cutoff work space and caisson for cutoff work Download PDF

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JP2012202082A
JP2012202082A JP2011066525A JP2011066525A JP2012202082A JP 2012202082 A JP2012202082 A JP 2012202082A JP 2011066525 A JP2011066525 A JP 2011066525A JP 2011066525 A JP2011066525 A JP 2011066525A JP 2012202082 A JP2012202082 A JP 2012202082A
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box
water
water stop
rubber tube
outside
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JP5569811B2 (en
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Takashi Hanebuchi
貴士 羽渕
Takeshi Tsuchiya
武史 土屋
Akiyoshi Miyazawa
明良 宮沢
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Toa Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a method for constructing cutoff work space, which allows a caisson for cutoff work to be stably fixed without water leakage, even for an uneven surface shape of a wall body on the waterfront or a pile body or structure standing in water; and a caisson for the cutoff work.SOLUTION: A water cutoff material 3 formed of a soft independent foam body with water impermeability extends from the front end of the front face of a casson 2 having openings at the front face and the top face. When the caisson 2 is installed at a predetermined position, the water cutoff material 3 comes in contact with a wall body 12, in a state that water W flows inside the caisson 2 through an opened communication port 6 which is disposed at the caisson 2 to allow the inside and the outside of the caisson 2 to be communicated with each other. The caisson 2 is fixed to the wall body 12 by upper fixing means 7 and lower fixing means 8. The communication port 6 is then closed to discharge the water W inside the caisson 2 outside. Before or after the discharge, a rubber tube 4 extending along the water cutoff material 3 at the back face thereof is expanded, so that the water cutoff material 3 is pressed to the wall body 12.

Description

本発明は、止水作業空間の構築方法および止水作業函に関し、さらに詳しくは、水際の壁状体や水中に立設する杭状体や構造物の表面形状に凹凸があっても、漏水を生じさせることなく、止水作業函を安定して固定することができる止水作業空間の構築方法およびその止水作業函に関するものである。   The present invention relates to a method for constructing a water stop working space and a water stop work box, and more particularly, even if there are irregularities in the surface shape of a wall-like body at a waterfront, a pile-like body standing in water, or a structure. The present invention relates to a method for constructing a water stop working space that can stably fix a water stop work box without causing water and its water stop work box.

海や河川等の護岸を構成している矢板等の水際の壁状体や水中に立設する杭状体や構造物については、腐食劣化程度の調査や、腐食劣化が進行していれば補修、補強工事を行なう必要がある。従来、このような調査や補修工事を行なう際には、例えば、水際の壁状体の場合では、前面および上面を開口した函体を、函体の前面の前端部に設けたゴム等の弾性の止水材を水際の壁状体に当接させることにより所定位置に設置し、その後、この函体内部の水を外部に排出して函体内部に作業空間を形成するようにしていた。   Investigate the degree of corrosion deterioration and repair if the corrosion deterioration has progressed for the wall-like bodies such as sheet piles that make up seawalls, rivers, etc. It is necessary to perform reinforcement work. Conventionally, when performing such investigation and repair work, for example, in the case of a wall-like body at the waterside, a box with an opening on the front and top surfaces is used as an elastic material such as rubber provided at the front end of the front of the box. The water-stopping material is placed in a predetermined position by contacting the water-like wall-like body, and then the water inside the box is discharged to form a work space inside the box.

この際に、壁状体に対して止水材を圧着させ、壁状体と函体との間のすき間をなくして形成した作業空間に漏水を生じさせないことが重要である。そこで、止水材として管状弾性体を採用し、この管状弾性体の内部に圧縮空気を供給することにより、様々な表面形状の壁状体に対しても、すき間を生じさせることなく、函体を設置できるようにした止水作業函が提案されている(特許文献1参照)。   At this time, it is important not to cause water leakage in the work space formed by pressure-bonding the water-stopping material to the wall-like body to eliminate the gap between the wall-like body and the box. Therefore, a tubular elastic body is adopted as a water-stopping material, and compressed air is supplied to the inside of the tubular elastic body, so that a box-shaped body can be formed without causing a gap even on a wall-shaped body having various surface shapes. Has been proposed (see Patent Document 1).

しかしながら、この提案の止水作業函では、圧縮空気を充填した管状弾性体を、その弾性変形によって壁状体の表面形状に密着させるので、様々な形状に追従させて変形させることが難しい。それ故、複雑な表面形状の壁状体に密着させることが困難であり、すき間が生じるという問題があった。   However, in the proposed water stop work box, the tubular elastic body filled with compressed air is brought into close contact with the surface shape of the wall-like body by its elastic deformation, so that it is difficult to deform it by following various shapes. Therefore, there is a problem that it is difficult to closely adhere to a wall-shaped body having a complicated surface shape, and a gap is generated.

また、管状弾性体を壁状体に密着させた後は、函体内部が水を閉じ込めて閉じた状態になり、止水作業函を壁状体に固定するまでの間に、潮の干満等により水面が上昇すると止水作業函には追加的な浮力が生じ、また、水面が下降すると浮力が減じて函体内部に閉じ込めた水によって下方に追加的な力が生じる。そのため、止水作業函を安定して固定することが難しいという問題があった。上記した問題は、水際の壁状体だけでなく、水中に立設する杭状体や構造物に止水作業函を設置する際にも当てはまる。   In addition, after the tubular elastic body is brought into close contact with the wall-like body, the inside of the box is in a closed state with water trapped, and during the period until the water-stopping work box is fixed to the wall-like body, tides and the like When the water surface rises, an additional buoyancy is generated in the water stop work box, and when the water surface is lowered, the buoyancy is reduced and additional force is generated downward by the water confined inside the box. Therefore, there is a problem that it is difficult to stably fix the water stop work box. The above-described problem applies not only to the wall-like body at the water's edge, but also to installing a water stop work box on a pile-like body or structure that stands in water.

実開平2−93330公報Japanese Utility Model Publication 2-93330

本発明の目的は、水際の壁状体や水中に立設する杭状体や構造物の表面形状に凹凸があっても、漏水を生じさせることなく、止水作業函を安定して固定することができる止水作業空間の構築方法およびその止水作業函を提供することにある。   An object of the present invention is to stably fix a water stop work box without causing water leakage even if there are irregularities in the surface shape of a wall-like body at the waterside, a pile-like body standing upright in the water, or a structure. An object of the present invention is to provide a method for constructing a water stop working space and a water stop working box.

上記目的を達成するため本発明の止水作業空間の構築方法は、前面および上面を開口した函体を、この函体の前面の前端部に延設した止水材を水際の壁状体に当接させることにより所定位置に設置し、その後、この函体内部の水を外部に排出して函体内部に作業空間を構築する止水作業空間の構築方法であって、前記止水材が不透水性の軟質独立気泡体であり、この函体を所定位置に設置する際に、函体の内部と外部とを連通可能な連通口を開いて函体内部に水を流入させた状態にしながら、前記止水材を壁状体に当接させて、壁状体に対して函体を固定手段で固定し、次いで前記連通口を閉じて函体内部の水を外部に排出する前に、または、排出した後に、前記止水材に沿ってその背面に延設したゴムチューブを膨張させることにより止水材を壁状体に押圧することを特徴とする。   In order to achieve the above object, the construction method of the water stop working space of the present invention includes a box having an open front surface and an upper surface, and a water stop material extending from the front end of the front surface of the box in a wall-like body at the water's edge. It is a method for constructing a water stop working space that is installed at a predetermined position by contact, and then drains the water inside the box to the outside to build a work space inside the box. This is a water-impermeable, soft closed-cell body, and when this box is installed at a predetermined position, a communication port that allows communication between the inside and outside of the box is opened to allow water to flow into the box. However, before the water blocking material is brought into contact with the wall-like body, the box is fixed to the wall-like body with a fixing means, and then the communication port is closed and the water inside the box is discharged to the outside. Or, after discharging, the rubber tube extended on the back surface along the water-stopping material is inflated to stop the water The characterized by pressing the wall-like member.

また、本発明の別の止水作業空間の構築方法は、上面を開口した有底の函体の底面の貫通孔に、水中に立設する杭状体を貫通させて、この杭状体の外周を囲むようにして、この函体を所定位置に設置し、その後、この函体内部の水を外部に排出して函体内部に作業空間を構築する止水作業空間の構築方法であって、前記函体の底面を分割するように複数の函体分割体を形成し、それぞれの函体分割体の前記貫通孔に相当する位置に止水材を取付け、この止水材が不透水性の軟質独立気泡体であり、それぞれの函体分割体を組み付けて前記函体を形成して、前記貫通孔に貫通させた杭状体に前記止水材を当接させた状態で杭状体の外周を囲むように函体を所定位置に設置する際に、前記函体分割体に設けた函体の内部と外部とを連通可能な連通口を開いて函体内部に水を流入させた状態にしながら、前記止水材を杭状体に当接させて、杭状体に対して函体を固定手段で固定し、次いで前記連通口を閉じた状態にして函体内部の水を外部に排出する前に、または、排出した後に、前記止水材に沿ってその背面に延設したゴムチューブを膨張させることにより止水材を杭状体に押圧することを特徴とする。   Further, another construction method of the water stop working space according to the present invention is such that a pile-like body standing in water is passed through a through-hole on a bottom surface of a bottomed box having an open top surface. It is a construction method of a water stop working space in which the box is installed at a predetermined position so as to surround the outer periphery, and then the water inside the box is discharged to the outside to build a work space inside the box. A plurality of box divisions are formed so as to divide the bottom surface of the box, and a water stop material is attached to a position corresponding to the through hole of each box division body. It is a closed cell body, each box body divided body is assembled to form the box body, and the outer periphery of the pile body is in contact with the water blocking material against the pile body passed through the through hole. When the box is installed at a predetermined position so as to surround the box, the communication between the inside and the outside of the box provided in the box divided body is possible. The water blocking material is brought into contact with the pile-shaped body while the water is allowed to flow inside the box, and the box is fixed to the pile-shaped body with fixing means, and then the communication port is connected to the pile-shaped body. Before or after draining the water inside the box in the closed state, the water-stopping material is piled up by inflating a rubber tube extending on the back surface along the water-stopping material. It is characterized by being pressed against the body.

さらに、本発明の別の止水作業空間の構築方法は、上面および下面を開口した筒状の函体に、水中に立設する構造物を貫通させた状態にして、この函体の下端面部に設けた止水材を、構造物の対向する面に当接させることにより所定位置に設置し、その後、この函体内部の水を外部に排出して函体内部に作業空間を構築する止水作業空間の構築方法であって、前記筒状の函体を周方向に分割するように複数の函体分割体を形成し、それぞれの函体分割体の前記下端面部に相当する位置に止水材を取付け、この止水材が不透水性の軟質独立気泡体であり、それぞれの函体分割体を組み付けて前記筒状の函体を形成して、この函体に構造物を貫通させて前記止水材を対向する面に当接させた状態で、この函体を所定位置に設置する際に、前記函体分割体に設けた函体の内部と外部とを連通可能な連通口を開いて函体内部に水を流入させた状態にしながら、前記止水材を対向する面に当接させ、構造物に対して函体を固定手段で固定して、次いで前記連通口を閉じてこの函体内部の水を外部に排出する前に、または、排出した後に、前記止水材に沿ってその背面に延設したゴムチューブを膨張させることにより止水材を対向する面に押圧することを特徴とする。   Furthermore, another construction method of the water stop working space of the present invention is such that a cylindrical box having an upper surface and a lower surface is opened, and a structure standing in water is passed through, and a lower end surface portion of the box The water-stopping material provided in the box is placed at a predetermined position by abutting against the opposing surface of the structure, and then the water inside the box is discharged to the outside to build a work space inside the box. A method for constructing a water working space, wherein a plurality of box division bodies are formed so as to divide the cylindrical box in a circumferential direction, and are stopped at a position corresponding to the lower end surface portion of each box division body. A water material is attached, and the water-stopping material is an impermeable soft closed cell body. The respective box division bodies are assembled to form the cylindrical box body, and the structure is passed through the box body. When the box is installed at a predetermined position with the water blocking material in contact with the opposite surface, the box While opening the communication port that allows the inside and outside of the box provided in the split body to communicate and allowing water to flow into the box, the water blocking material is brought into contact with the opposing surface to On the other hand, the box is fixed by a fixing means, and then the communication port is closed and the water inside the box is discharged to the outside before or after the water is discharged along the water-stopping material. It is characterized in that the water-stopping material is pressed against the opposite surface by expanding the provided rubber tube.

本発明の止水作業函は、前面および上面を開口した函体と、この函体の前面の前端部に延設された止水材とを備えた止水作業函であって、前記止水材が不透水性の軟質独立気泡体であり、この止水材に沿ってその背面に延設される膨張するゴムチューブと、前記函体の内部と外部とを連通可能な開閉する連通口と、前記止水材が当接する水際の壁状体に対して函体を固定する固定手段と、を設けたことを特徴とする。   The water stop work box of the present invention is a water stop work box provided with a box having an open front surface and an upper surface, and a water stop material extended to the front end of the front surface of the box. The material is a water-impermeable soft closed-cell body, and an inflatable rubber tube extending on the back surface along the water-stopping material, and a communication opening that opens and closes the inside and outside of the box. And a fixing means for fixing the box to the wall-like body at the water's edge where the water blocking material abuts.

また、本発明の別の止水作業函は、底面に貫通孔を有し上面を開口した有底の函体と、この貫通孔に設けられた止水材とを備えた止水作業函であって、前記函体をその底面を分割するように形成した複数の函体分割体で構成し、前記止水材が不透水性の軟質独立気泡体であり、この止水材をそれぞれの函体分割体の前記貫通孔に相当する位置に取付けるとともに、この止水材に沿ってその背面に延設される膨張するゴムチューブと、少なくとも1つの函体分割体に設けられる函体の内部と外部とを連通可能な開閉する連通口と、前記貫通孔を貫通して前記止水材が当接する水中に立設する杭状体に対して函体を固定する固定手段と、を設けたことを特徴とする。   Further, another water stop work box of the present invention is a water stop work box provided with a bottomed box body having a through hole on the bottom surface and an open top surface, and a water stop material provided in the through hole. The box is composed of a plurality of box divisions formed so as to divide the bottom surface, and the water-stopping material is a water-impermeable soft closed cell body. A rubber tube that is attached to a position corresponding to the through hole of the body divided body and that extends on the back surface along the water blocking material, and an interior of the box provided in at least one box divided body, A communication port that opens and closes to allow communication with the outside, and a fixing means that fixes the box to a pile-like body that stands up in the water that passes through the through-hole and contacts the water-stopping material. It is characterized by.

さらに、本発明の別の止水作業函は、上面および下面を開口した筒状の函体と、この函体の下端面部に設けられた止水材とを備えた止水作業函であって、前記筒状の函体を周方向に分割するように形成した複数の函体分割体で構成し、前記止水材が不透水性の軟質独立気泡体であり、この止水材をそれぞれの函体分割体の前記下端面部に相当する位置に取付けるとともに、この止水材に沿ってその背面に延設される膨張するゴムチューブと、少なくとも1つの函体分割体に設けられる函体の内部と外部とを連通可能な開閉する連通口と、前記函体を貫通して水中に立設する構造物に対して函体を固定する固定手段と、を設けたことを特徴とする。   Furthermore, another water-stopping work box of the present invention is a water-stopping work box provided with a cylindrical box having an upper surface and a lower surface opened, and a water-stopping material provided on a lower end surface portion of the box. The cylindrical box is composed of a plurality of box division bodies formed so as to be divided in the circumferential direction, and the water-stopping material is a water-impermeable soft closed cell body. A rubber tube that is attached to a position corresponding to the lower end surface portion of the box body and that is expanded on the back surface along the water blocking material, and an interior of the box provided in at least one box body And a communication port that opens and closes to communicate with the outside, and a fixing means that fixes the box to a structure that penetrates the box and stands in water.

本発明によれば、函体に設けた止水材を、水際の壁状体などの対象物に当接させて所定位置に設置する際に、函体の内部と外部とを連通可能な連通口を開いて函体内部に水を流入させた状態にしながら、止水材を対象物に当接させて、その対象物に対して函体を固定手段で固定することで、函体内部と外部とが同じ水面位置になるので、函体の外部の水面位置の変動に起因して、函体に不要な力が生じることがない。そのため、止水作業函を安定して対象物に固定することができる。   According to the present invention, when the water-stopping material provided in the box is placed at a predetermined position in contact with an object such as a wall at the waterside, the communication between the inside and the outside of the box can be established. While keeping the mouth open and allowing water to flow into the box, the water-stopping material is brought into contact with the object, and the box is fixed to the object with fixing means. Since the water surface position is the same as that of the outside, unnecessary force is not generated in the box due to the fluctuation of the water surface position outside the box. Therefore, the water stop work box can be stably fixed to the object.

次いで、連通口を閉じて函体内部の水を外部に排出する前に、または、排出した後に、止水材に沿ってその背面に延設したゴムチューブを膨張させることにより止水材を対象物に押圧するが、止水材は不透水性の軟質独立気泡体であるので、通常のゴム材に比して変形し易く、対象物の表面に大きな凹凸や小さな凹凸があっても、その凹凸に沿って変形させることができる。そして、膨張するゴムチューブによって、凹凸に沿って変形した止水材を対象物に押付けるので、すき間なく密着させることが可能になる。そのため漏水を生じさせることなく、対象物に対して止水作業函を安定して固定することができる。   Next, close the communication port and discharge the water inside the box to the outside, or after discharging, expand the rubber tube extending on the back surface along the water blocking material to target the water blocking material The water-stopping material is impermeable, soft, closed-cell foam, so it is more easily deformed than ordinary rubber materials, even if there are large or small irregularities on the surface of the object. It can be deformed along the unevenness. And since the water stop material which deform | transformed along the unevenness | corrugation is pressed against a target object by the rubber tube which expand | swells, it becomes possible to make it closely_contact | adhere without a gap. Therefore, the water stop work box can be stably fixed to the object without causing water leakage.

連通口を開いて函体内部に水を流入させている本発明の止水作業函を例示する側面図である。It is a side view which illustrates the water stop work box of the present invention which opened a communicating port and made water flow in into a box. 図1のA−A断面図である。It is AA sectional drawing of FIG. 図1の止水作業函の正面図である。It is a front view of the water stop work box of FIG. 図2の止水材およびゴムチューブの周辺を例示する一部拡大断面図である。FIG. 3 is a partially enlarged cross-sectional view illustrating the periphery of a water blocking material and a rubber tube in FIG. 2. 図4のゴムチューブが膨張していない状態を示す断面図である。It is sectional drawing which shows the state which the rubber tube of FIG. 4 has not expanded. 図2の止水材の変形例を示す断面図である。It is sectional drawing which shows the modification of the water stop material of FIG. 図2の止水材の別の変形例を示す断面図である。It is sectional drawing which shows another modification of the water stop material of FIG. 函体を壁状体の表面に向かって移動させている状態を例示する断面図(図1のA−A断面相当図)である。It is sectional drawing which illustrates the state which is moving the box toward the surface of a wall-shaped body (AA cross-section equivalent figure of FIG. 1). 止水材のさらに別の変形例を示す断面図である。It is sectional drawing which shows another modification of a water stop material. 図3のゴムチューブの変形例を示す止水作業函の正面図である。It is a front view of the water stop work box which shows the modification of the rubber tube of FIG. 止水作業函の別の実施形態を例示する平面図である。It is a top view which illustrates another embodiment of a water stop work box. 図11の函体分割体どうしを組み付ける工程を例示する説明図である。It is explanatory drawing which illustrates the process of assembling the box division bodies of FIG. 図11のB−B断面図である。It is BB sectional drawing of FIG. 止水作業函の別の実施形態を例示する斜視図である。It is a perspective view which illustrates another embodiment of a water stop work box. 止水作業函の別の実施形態を例示する平面図である。It is a top view which illustrates another embodiment of a water stop work box. 図15のC−C断面図である。It is CC sectional drawing of FIG. 図15の函体分割体を所定位置に設置する工程を例示する説明図である。It is explanatory drawing which illustrates the process of installing the box division body of FIG. 15 in a predetermined position. 止水作業函の変形例を示す側面図である。It is a side view which shows the modification of a water stop work box. 止水作業函の別の変形例を示す側面図である。It is a side view which shows another modification of a water stop work box.

以下、本発明の止水作業空間の構築方法および止水作業函を、実施形態に基づいて説明する。   Hereinafter, the construction method and the water stop work box of the water stop work space of the present invention will be described based on the embodiments.

図1〜図4に例示するように、本発明の止水作業函1の第1実施形態は、前面および上面を開口した函体2と、函体2の前面の前端部に延設された止水材3とを備えている。この実施形態では、函体2の前面の前端部は鋼等で形成されたチャネルで構成され、函体2の左右側面、後面および底面は、鋼板等の剛性材により構成されている。函体2の材質、部材等はこれに限定されるものではない。   As illustrated in FIGS. 1 to 4, the first embodiment of the water stop working box 1 of the present invention is extended to a box 2 having an open front surface and an upper surface, and a front end portion of the front surface of the box 2. The water stop material 3 is provided. In this embodiment, the front end portion of the front surface of the box 2 is formed of a channel formed of steel or the like, and the left and right side surfaces, the rear surface, and the bottom surface of the box 2 are formed of a rigid material such as a steel plate. The material and members of the box 2 are not limited to this.

函体2の底面には、函体2の内部と外部とを連通可能な開閉する連通口6が設けられている。連通口6は底面に限らず、他の場所に設けることもできるが、できるだけ函体2の下方位置に設けることが好ましい。連通口6は1つに限らず、複数設けることもできる。   A communication port 6 that opens and closes the inside and outside of the box 2 is provided on the bottom surface of the box 2. The communication port 6 is not limited to the bottom surface, but can be provided at other locations, but it is preferable to provide the communication port 6 at a position below the box 2 as much as possible. The communication port 6 is not limited to one, and a plurality of communication ports 6 may be provided.

止水材3は、函体2の前面の前端部を覆うように取付けられている。止水材3は、不透水性の軟質独立気泡体であり、厚さは例えば、10mm〜200mm程度である。止水材3として、例えば、樹脂材料、ゴム材料、エラストマー、或いはこれらの複合材料で形成されたスポンジ体が使用される。具体的には、止水材3としてEPDM製のスポンジ体が挙げられる。   The water blocking material 3 is attached so as to cover the front end portion of the front surface of the box 2. The water stop material 3 is a water-impermeable soft closed cell body, and the thickness is, for example, about 10 mm to 200 mm. As the water stop material 3, for example, a sponge material formed of a resin material, a rubber material, an elastomer, or a composite material thereof is used. Specifically, a sponge body made of EPDM is used as the water stop material 3.

止水材3の硬度は、例えば、25%圧縮荷重が10kPa〜50kPa程度である。この値は、厚さ12.5mm×縦50mm×横50mmのサンプルをオートグラフにて圧縮速度50mm/minで圧縮した際の測定値である。   The hardness of the water stop material 3 is, for example, a 25% compression load of about 10 kPa to 50 kPa. This value is a measured value when a sample having a thickness of 12.5 mm, a length of 50 mm, and a width of 50 mm is compressed by an autograph at a compression speed of 50 mm / min.

止水材3の背面には、止水材3に沿ってゴムチューブ4が延設されている。ゴムチューブ4は流体配管5を介して、壁状体12の上に設置された流体給排手段10に接続されている。流体給排手段10によって、空気や水などの流体Lが注入されることにより、ゴムチューブ4は膨張し、注入された流体Lが排出されることにより収縮する。ゴムチューブ4の両側面および背面は、鋼板等の剛性材で囲うようにするとよい。これにより、ゴムチューブ4を膨張させた際に、止水材4側に向かって大きく突出させることができる。ゴムチューブ4の背面と剛性材(函体2の前面)との間に追加的に止水材3を介在させることもできる。   A rubber tube 4 is extended along the water blocking material 3 on the back surface of the water blocking material 3. The rubber tube 4 is connected to a fluid supply / discharge means 10 installed on the wall-like body 12 via a fluid pipe 5. When the fluid L such as air or water is injected by the fluid supply / discharge means 10, the rubber tube 4 expands and contracts when the injected fluid L is discharged. Both side surfaces and the back surface of the rubber tube 4 are preferably surrounded by a rigid material such as a steel plate. Thereby, when the rubber tube 4 is expanded, the rubber tube 4 can be largely protruded toward the water blocking material 4 side. A water blocking material 3 can be additionally interposed between the back surface of the rubber tube 4 and the rigid material (the front surface of the box 2).

流体給排手段10は制御装置11によって制御される。即ち、制御装置11によってゴムチューブ4の膨張圧力や膨張および収縮させるタイミングが制御される。   The fluid supply / discharge means 10 is controlled by the control device 11. That is, the control device 11 controls the expansion pressure of the rubber tube 4 and the timing of expansion and contraction.

函体2には、函体2上部を固定する上部固定手段7と、函体2下部を固定する下部固定手段8とが設けられている。この実施形態では、上部固定手段7として、L字状の剛性アングル部材が用いられ、函体2上部が壁状体12の上面に固定されている。また、下部固定手段8は、水中の壁状体12の表面に突設されたアンカーボルト8aとアンカーボルト8aと函体2の下部との間に張設されるワイヤ8bとで構成されている。上部固定手段7および下部固定手段8は、これに限定されず、他の構造(部材)を用いることもできる。   The box 2 is provided with an upper fixing means 7 for fixing the upper part of the box 2 and a lower fixing means 8 for fixing the lower part of the box 2. In this embodiment, an L-shaped rigid angle member is used as the upper fixing means 7, and the upper portion of the box 2 is fixed to the upper surface of the wall-like body 12. The lower fixing means 8 includes an anchor bolt 8 a protruding from the surface of the underwater wall 12, and a wire 8 b extending between the anchor bolt 8 a and the lower portion of the box 2. . The upper fixing means 7 and the lower fixing means 8 are not limited to this, and other structures (members) can be used.

また、函体2を壁状体12に対して安定に固定できれば、上部固定手段7、下部固定手段8の2種類のうち、1種類の固定手段のみにすることもできる。例えば、上部固定手段7のみを用いることもできる。   If the box 2 can be stably fixed to the wall-like body 12, only one type of fixing means among the upper fixing means 7 and the lower fixing means 8 can be used. For example, only the upper fixing means 7 can be used.

図4に例示するように、ゴムチューブ4の内部に流体Lを注入して所定の膨張圧力で膨張させている状態では、ゴムチューブ4は止水材3の背面を押圧する。一方、ゴムチューブ4に負荷している膨張圧力を解除すると、図5に例示するように収縮した状態になって止水材3の押圧を止める。   As illustrated in FIG. 4, the rubber tube 4 presses the back surface of the water-stopping material 3 in a state where the fluid L is injected into the rubber tube 4 and is expanded at a predetermined expansion pressure. On the other hand, when the expansion pressure loaded on the rubber tube 4 is released, the rubber tube 4 is contracted as illustrated in FIG.

止水材3は、図6に例示するように2つの層3A、3Bで構成し、それぞれの層3A、3Bの硬さを異ならせて、層3Aを層3Bよりも柔らかくした仕様にすることもできる。   As shown in FIG. 6, the waterstop material 3 is composed of two layers 3A and 3B, and the hardness of each layer 3A and 3B is made different so that the layer 3A is softer than the layer 3B. You can also.

図7に例示するように、止水材3の前面とゴムチューブ4との間に、止水材3およびゴムチューブ4よりも高剛性の板状の剛性体9を介在させた仕様にすることもできる。剛性体9としては、例えば繊維等で形成された補強層が用いられる。   As illustrated in FIG. 7, the specification is such that a plate-like rigid body 9 having higher rigidity than the water-stopping material 3 and the rubber tube 4 is interposed between the front surface of the water-stopping material 3 and the rubber tube 4. You can also. As the rigid body 9, for example, a reinforcing layer made of fiber or the like is used.

以下、この止水作業函1を用いた本発明の止水作業空間の構築方法の手順を説明する。   Hereinafter, the procedure of the construction method of the water stop work space of this invention using this water stop work box 1 is demonstrated.

まず、図8に例示するように、止水作業函1の前面を、鋼矢板等の水際の壁状体12の表面に対向させる。この際に、連通口6は開いたままにしておき、ゴムチューブ4は膨張させない状態にしておく。   First, as illustrated in FIG. 8, the front surface of the water stop work box 1 is opposed to the surface of the wall-like body 12 at the edge of a steel sheet pile or the like. At this time, the communication port 6 is kept open, and the rubber tube 4 is not expanded.

そして、函体2の前面を壁状体12の表面に向かって移動させ、止水材3を壁状体12の表面に当接させる。止水材3は、不透水性の軟質独立気泡体なので変形性能に優れ、壁状体12の表面形状にすき間なく沿うように変形することができる。このようにして図1に例示するように、連通口6を通じて、函体2内部に外部の水Wが自由に出入りする状態になる。   Then, the front surface of the box 2 is moved toward the surface of the wall-shaped body 12, and the water blocking material 3 is brought into contact with the surface of the wall-shaped body 12. Since the water blocking material 3 is a water-impermeable soft closed cell body, it has excellent deformation performance and can be deformed so as to follow the surface shape of the wall-shaped body 12 without gaps. In this manner, as illustrated in FIG. 1, the external water W freely enters and exits the box 2 through the communication port 6.

尚、壁状体12の表面との密着性をより高めるために、図9に例示するように止水材3の前面を、概略、壁状体12の表面形状に沿った形状(対応させた形状)に予め形成しておくこともできる。   In order to further improve the adhesion with the surface of the wall-like body 12, the front surface of the water-stopping material 3 is roughly shaped (corresponding to the surface shape of the wall-like body 12) as illustrated in FIG. (Shape) can be formed in advance.

次いで、函体2上部を上部固定手段7により壁状体12に固定し、函体2下部を下部固定手段8により壁状体12に固定する。その後、ゴムチューブ4に流体Lを注入して所定の膨張圧力を負荷して膨張させ、膨張させた状態を維持する。   Next, the upper part of the box 2 is fixed to the wall-like body 12 by the upper fixing means 7, and the lower part of the box 2 is fixed to the wall-like body 12 by the lower fixing means 8. Thereafter, the fluid L is injected into the rubber tube 4 and is inflated by applying a predetermined expansion pressure, and the expanded state is maintained.

次いで、連通口6を閉じた状態にして、函体2内部の水Wをポンプ等により函体2外部に排出することにより、函体2の内部に止水作業空間を構築することができる。   Next, the water stop working space can be constructed inside the box 2 by discharging the water W inside the box 2 to the outside of the box 2 with a pump or the like with the communication port 6 closed.

函体2を所定位置に設置する際に、連通口6を開いて函体2内部に水Wを流入させた状態にしているので、函体2内部と外部とが常に同じ水面位置になる。そのため、函体2(止水作業函1)を壁状体12の所定位置に固定するまでの間に、潮の干満等により水面が上昇しても函体2(止水作業函1)には追加的な浮力が生じることがない。また、水面が下降することにより浮力が減じても、函体2内部に存在する水Wによって下方に追加的な力が生じることもない。また、函体2の内部と外部の水面位置の違い(水圧差)による外力が函体2に作用することもない。   When the box 2 is installed at a predetermined position, the communication port 6 is opened and the water W is allowed to flow into the box 2, so that the inside of the box 2 and the outside are always at the same water surface position. Therefore, even if the water surface rises due to tides or the like until the box 2 (water-stopping work box 1) is fixed at a predetermined position of the wall-like body 12, the box 2 (water-stopping work box 1) Does not cause additional buoyancy. Further, even if the buoyancy is reduced by lowering the water surface, no additional force is generated downward by the water W existing inside the box 2. Further, the external force due to the difference in water surface position between the inside and outside of the box 2 (water pressure difference) does not act on the box 2.

このように、函体2(止水作業函1)の外部の水面位置の変動に起因して、函体2(止水作業函1)に上下方向に不要な追加的な力や水圧差に起因する外力が生じることがない。これにより、函体2(止水作業函1)を壁状体12に対して強固に安定して固定することができる。   In this way, due to fluctuations in the water surface position outside the box 2 (water stop work box 1), additional force and water pressure difference that are unnecessary in the vertical direction on the box 2 (water stop box 1). The resulting external force does not occur. Thereby, the box 2 (water-stopping work box 1) can be firmly and stably fixed to the wall-like body 12.

また、止水材3は不透水性の軟質独立気泡体であるので、壁状体12の表面に凹凸があっても、その凹凸に沿って容易に変形させることができる。そして、膨張するゴムチューブ4によって、凹凸に沿って変形した止水材3を壁状体12に押付けるので、すき間なく密着させることができる。そのため、漏水を生じさせることなく、壁状体12に対して止水作業函1を安定して固定することができる。   Moreover, since the water stop material 3 is a water-impermeable soft closed cell body, even if the surface of the wall-like body 12 has irregularities, it can be easily deformed along the irregularities. And since the water stop material 3 which deform | transformed along the unevenness | corrugation is pressed against the wall-shaped body 12 with the rubber tube 4 which expand | swells, it can be made to contact | adhere without a gap. Therefore, the water stop work box 1 can be stably fixed to the wall-like body 12 without causing water leakage.

尚、連通口6を閉じて函体2の内部の水Wを外部に排出した後に、ゴムチューブ4に流体Lを注入して所定の膨張圧力を負荷して膨張させることもできる。   In addition, after closing the communication port 6 and discharging the water W inside the box 2 to the outside, the fluid L can be injected into the rubber tube 4 to be inflated by applying a predetermined expansion pressure.

図6に例示した仕様のように、止水材3の硬さを厚さ方向で異ならせ、前面側をゴムチューブ4側よりも柔らかくした仕様にすると、層3Aを壁状体12の表面にすき間なく密着させ易く、かつ、層3Bによって、膨張するゴムチューブ4の押圧力を広範囲に層3Aに伝え易くなる。図7に例示した仕様の場合も、剛性体9によって、膨張するゴムチューブ4の押圧力を広範囲に止水材3に伝え易くなる。   As shown in the specification illustrated in FIG. 6, if the hardness of the water blocking material 3 is varied in the thickness direction and the front side is made softer than the rubber tube 4 side, the layer 3 </ b> A is formed on the surface of the wall-like body 12. The layer 3B can easily transmit the pressing force of the expanding rubber tube 4 to the layer 3A over a wide range. Also in the case of the specification illustrated in FIG. 7, the rigid body 9 makes it easy to transmit the pressing force of the expanding rubber tube 4 to the water stop material 3 over a wide range.

図10に例示するように、ゴムチューブ4を延設方向で4A、4B、4Cの複数に分割した構成することもできる。それぞれのゴムチューブ4A、4B、4Cの膨張は、独立して制御装置11により制御される。   As illustrated in FIG. 10, the rubber tube 4 may be divided into a plurality of 4A, 4B, and 4C in the extending direction. Expansion of each rubber tube 4A, 4B, 4C is controlled by the control device 11 independently.

この実施形態では、ゴムチューブ4を延設方向で上下に4A、4B、4Cの複数に分割している。それぞれのゴムチューブ4A、4B、4Cを膨張させる際の膨張圧力は、下方に位置するゴムチューブ4Cよりも上方に位置するゴムチューブ4A、4Bにおいて高くなるように設定されている。   In this embodiment, the rubber tube 4 is vertically divided into a plurality of 4A, 4B, and 4C in the extending direction. The expansion pressure when expanding each of the rubber tubes 4A, 4B, 4C is set to be higher in the rubber tubes 4A, 4B positioned above the rubber tube 4C positioned below.

止水材3の下方に位置する部分は、上方に位置する部分よりも、水圧を受ける函体2によって強く壁状体12に押圧される。したがって、止水材3の上方に位置する部分を、下方に位置する部分よりも強く壁状体12に押圧することが、すき間なく壁状体12の表面に密着させるには効率的である。そこで、この実施形態では、ゴムチューブ4Cよりもゴムチューブ4A、4Bの膨張圧力を高くするのが好ましい。   The portion located below the water blocking material 3 is pressed more strongly against the wall-like body 12 by the box 2 that receives water pressure than the portion located above. Therefore, it is efficient to press the portion positioned above the water blocking material 3 against the wall-shaped body 12 more strongly than the portion positioned below to closely contact the surface of the wall-shaped body 12 with no gap. Therefore, in this embodiment, it is preferable that the expansion pressure of the rubber tubes 4A and 4B is higher than that of the rubber tube 4C.

図11〜図13に例示する止水作業函1の第2実施形態は、桟橋などの水中に立設する杭状体13を補修工事する場合等に用いられるものである。この止水作業函1は、上面を開口した有底の函体2を備えている。この函体2は底面に貫通孔2aを有し、貫通孔2aの内周面には止水材3が取り付けられている。この止水材3は、第1実施形態と同仕様のものである。止水材3の背面(外周側)には止水材3に沿って環状のゴムチューブ4が延設されている。   The second embodiment of the water stop work box 1 illustrated in FIGS. 11 to 13 is used when repairing a pile-like body 13 standing in water such as a pier. The water stop work box 1 includes a bottomed box 2 having an open upper surface. The box 2 has a through hole 2a on the bottom surface, and a water blocking material 3 is attached to the inner peripheral surface of the through hole 2a. This water blocking material 3 has the same specifications as the first embodiment. An annular rubber tube 4 is extended along the water stop material 3 on the back surface (outer peripheral side) of the water stop material 3.

函体2は、貫通孔2aを分割して底面を分割するように形成した2つの函体分割体2A、2Bで構成されているが、3つ以上の函体分割体によって函体2を構成することもできる。函体分割体2A、2Bは鋼板等で構成されている。それぞれの函体分割体2A、2Bは、互いの合わせ面にゴム等からなる一般的なシール材3aを介在させて組み付けることにより、函体2に形成される。   The box 2 is composed of two box divisions 2A and 2B formed so as to divide the bottom surface by dividing the through hole 2a, but the box 2 is constituted by three or more box divisions. You can also The box bodies 2A and 2B are made of steel plates or the like. Each box division body 2A, 2B is formed in the box 2 by assembling with a general sealing material 3a made of rubber or the like interposed between the mating surfaces.

一方の函体分割体2Bの底面には、函体2の内部と外部とを連通可能な開閉する連通口6が設けられている。連通口6は、少なくとも1つの函体分割体2Bに1つ設ければよいが、複数設けることもできる。連通口6は底面に限らず、他の場所に設けることもできるが、できるだけ函体分割体2B(函体2)の下方位置に設けることが好ましい。
函体2は、上記のような分割構造であるため、それぞれの函体分割体2A、2Bの貫通孔2aに相当する位置に止水材3、ゴムチューブ4が取り付けられている。それぞれのゴムチューブ4には、流体配管5が接続されている。流体配管5は杭状体13の上部工に設置された流体給排手段10に接続されている。流体給排手段10は制御装置11により制御される。
A communication port 6 that opens and closes the inside and outside of the box 2 is provided at the bottom of one box body 2B. One communication port 6 may be provided in at least one box body 2B, but a plurality of communication ports 6 may be provided. The communication port 6 is not limited to the bottom surface, but can be provided at other locations, but it is preferable to provide the communication port 6 at a position below the box body 2B (box 2) as much as possible.
Since the box 2 has the above-described divided structure, the water stop material 3 and the rubber tube 4 are attached to positions corresponding to the through holes 2a of the box divided bodies 2A and 2B. A fluid pipe 5 is connected to each rubber tube 4. The fluid pipe 5 is connected to the fluid supply / discharge means 10 installed in the superstructure of the pile-like body 13. The fluid supply / discharge means 10 is controlled by the control device 11.

それぞれの函体分割体2A、2Bには、函体分割体2A、2B(函体2)の上部を杭状体13に対して固定する上部固定手段7が設けられている。この実施形態では、上部固定手段7として函体分割体2A、2B(函体2)の上部と杭状体13の上部工に固定された剛性アングル部材が用いられている。   Each box body 2A, 2B is provided with an upper fixing means 7 for fixing the upper parts of the box bodies 2A, 2B (box 2) to the pile-like body 13. In this embodiment, a rigid angle member fixed to the upper part of the box bodies 2A and 2B (box 2) and the upper work of the pile-like body 13 is used as the upper fixing means 7.

上部固定手段7に代えて、或いは上部固定手段7に加えて、函体分割体2A、2B(函体2)の下部を杭状体13に固定する下部固定手段を設けることもできる。上部固定手段7および下部固定手段は、第1実施形態と同仕様のものを用いることができる。   Instead of the upper fixing means 7 or in addition to the upper fixing means 7, lower fixing means for fixing the lower parts of the box bodies 2A and 2B (box 2) to the pile-like body 13 may be provided. As the upper fixing means 7 and the lower fixing means, those having the same specifications as those of the first embodiment can be used.

この止水作業函1を用いて止水作業空間を構築する手順は以下のとおりである。   The procedure for constructing a water stop working space using the water stop work box 1 is as follows.

まず、それぞれの函体分割体2A、2Bに浮体を取付け、図12に例示するように水上移動させて、止水材3を杭状体13の表面に当接させる。この際に、連通口6は開いたままにしておき、ゴムチューブ4は膨張させない状態にしておく。函体分割体2A、2Bの合わせ面にはシール材3aを介在させて、それぞれの函体分割体2A、2Bのフランジ部にボルトを通して互いを組み付けて函体2を形成する。   First, a floating body is attached to each box body divided body 2 </ b> A, 2 </ b> B and is moved on the water as illustrated in FIG. At this time, the communication port 6 is kept open, and the rubber tube 4 is not expanded. A seal member 3a is interposed between the mating surfaces of the box bodies 2A and 2B, and the boxes 2 are formed by assembling each other through bolts to the flange portions of the box bodies 2A and 2B.

これにより函体2は、図11に例示するように、貫通孔2aを貫通する杭状体13の外周を囲んだ状態になる。止水材3は、杭状体13の表面形状に沿うように変形して、杭状体13の外周面にすき間なく密着する。函体2内部には、外部の水Wが自由に出入りする状態になる。   Thereby, the box 2 is in a state of surrounding the outer periphery of the pile-like body 13 that penetrates the through hole 2a as illustrated in FIG. The water blocking material 3 is deformed so as to follow the surface shape of the pile-like body 13 and closely adheres to the outer peripheral surface of the pile-like body 13. Inside the box 2, the outside water W can freely enter and exit.

次いで、函体2上部を上部固定手段7により杭状体13に固定する。その後、ゴムチューブ4に流体Lを注入して所定の膨張圧力を負荷して膨張させる。   Next, the upper part of the box 2 is fixed to the pile-like body 13 by the upper fixing means 7. Thereafter, the fluid L is injected into the rubber tube 4 and is inflated by applying a predetermined expansion pressure.

次いで、連通口6を閉じた状態にして、函体2内部の水Wを函体2外部に排出することにより、函体2の内部に止水作業空間を構築することができる。   Next, a water stop working space can be constructed inside the box 2 by discharging the water W inside the box 2 to the outside of the box 2 with the communication port 6 closed.

連通口6を開いて函体2内部に水Wを流入させた状態にしているので、第1実施形態と同様に函体2の外部の水面位置の変動に起因して、函体2に上下方向に不要な追加的な力や水圧差に起因する外力が生じることがない。そのため、函体2を杭状体13に対して強固に安定して固定することができる。   Since the communication port 6 is opened and the water W is allowed to flow into the box 2, the box 2 is moved up and down due to fluctuations in the water surface position outside the box 2 as in the first embodiment. No additional force or unnecessary external force due to the water pressure difference is generated in the direction. Therefore, the box 2 can be firmly and stably fixed to the pile-like body 13.

また、第1実施形態と同様に杭状体13の表面が複雑な形状であっても、止水材3によって、漏水を生じさせるすき間がないように函体2を所定位置に設置することができる。   Moreover, even if the surface of the pile-shaped body 13 is a complicated shape similarly to 1st Embodiment, it can install the box 2 in a predetermined position so that there may be no gap which causes water leakage with the water stop material 3. it can.

この実施形態においても、連通口6を閉じて函体2の内部の水Wを外部に排出した後に、ゴムチューブ4に流体Lを注入して所定の膨張圧力を負荷して膨張させることもできる。   Also in this embodiment, after the communication port 6 is closed and the water W inside the box 2 is discharged to the outside, the fluid L can be injected into the rubber tube 4 to be inflated by applying a predetermined expansion pressure. .

第2実施形態の止水作業函1では、1本の杭状体13の外周を1つの函体2で囲むようにしたが、図14に例示する第3実施形態のように、複数本の杭状体13a、13b、13cの外周を1つの函体2で囲む構造にした止水作業函1にすることもできる。   In the water stopping work box 1 of the second embodiment, the outer periphery of one pile-like body 13 is surrounded by one box 2, but a plurality of pieces are provided as in the third embodiment illustrated in FIG. 14. It can also be set as the water stop work box 1 made into the structure which surrounds the outer periphery of the pile-shaped bodies 13a, 13b, 13c with the one box 2.

この函体2は、上面を開口した有底の函体2の底面に、杭状体13a、13b、13cを貫通させる複数の貫通孔2a(この実施形態では3つの貫通孔2a)を有し、それぞれの貫通孔2aを分割して函体2の底面を分割するように形成した2つの函体分割体2A、2Bで構成されている。   This box 2 has a plurality of through-holes 2a (three through-holes 2a in this embodiment) that allow the pile-like bodies 13a, 13b, and 13c to pass through on the bottom surface of the bottomed box 2 having an open top surface. Each of the through holes 2a is divided into two box divided bodies 2A and 2B formed so as to divide the bottom surface of the box 2.

それぞれの函体分割体2A、2Bの貫通孔2aに相当する位置には、止水材3が取り付けられている。止水材3の背面(外周側)には止水材3に沿って環状のゴムチューブ4が延設されている。それぞれのゴムチューブ4には、流体配管5が接続されている。流体給排手段10は制御装置11により制御される。   A water stop material 3 is attached to a position corresponding to the through hole 2a of each box body 2A, 2B. An annular rubber tube 4 is extended along the water stop material 3 on the back surface (outer peripheral side) of the water stop material 3. A fluid pipe 5 is connected to each rubber tube 4. The fluid supply / discharge means 10 is controlled by the control device 11.

また、少なくとも1つの函体分割体2Bに、函体2の内部と外部とを連通可能な開閉する連通口6が少なくとも1つ設けられており、貫通孔2aを貫通して止水材3が当接する杭状体13a、13b、13cに対して函体2を固定する固定手段7が設けられている。それぞれの函体分割体2A、2Bを、互いの合わせ面にシール材3aを介在させて組み付けることによって、函体2が形成される。   Further, at least one communication opening 6 that opens and closes the inside and outside of the box 2 can be provided in the at least one box body 2B, and the water blocking material 3 penetrates the through hole 2a. Fixing means 7 for fixing the box 2 to the pile-like bodies 13a, 13b, and 13c that come into contact with each other is provided. The box body 2 is formed by assembling each box body 2A, 2B with the sealing material 3a interposed between the mating surfaces.

その他の仕様は、第2実施形態と同様であり、止水作業空間を構築する手順も第2実施形態と同様である。   Other specifications are the same as those of the second embodiment, and the procedure for constructing the water stop working space is the same as that of the second embodiment.

この実施形態によっても、第2実施形態と同様の効果を得ることができるが、複数の杭状体13a〜13cが、近接した位置で立設している場合や、複雑に交錯するように立設している場合であっても、1つの函体2で止水作業空間を構築することができるという利点がある。   According to this embodiment, the same effect as that of the second embodiment can be obtained. However, when the plurality of pile-like bodies 13a to 13c are erected at positions close to each other or in a complicated manner, Even if it is provided, there is an advantage that a water stop working space can be constructed with one box 2.

図15〜図17に例示する止水作業函1の第4実施形態は、橋梁下部工14などの水中に立設する構造物を補修工事する場合等に用いられるものである。この橋梁下部工14は、地盤に設置される平面状のフーチング14bから柱部14aを上方に突出させた形状になっている。   The fourth embodiment of the water stop work box 1 illustrated in FIGS. 15 to 17 is used when repairing a structure such as a bridge substructure 14 standing in water. The bridge substructure 14 has a shape in which the column portion 14a protrudes upward from a planar footing 14b installed on the ground.

この止水作業函1は、上面および下面を開口した筒状の函体2を備えている。この函体2の下端面部(下端面および下端面の内周側)には止水材3が取り付けられている。詳しくは、平面視で長方形の函体2において、長方形の長辺の下端面および短辺の下端面の内周側に止水材3が取り付けられている。この止水材3は、第1実施形態と同仕様のものである。   The water stop work box 1 includes a cylindrical box 2 having an upper surface and a lower surface opened. A water blocking material 3 is attached to the lower end surface portion (the inner peripheral side of the lower end surface and the lower end surface) of the box 2. Specifically, in the rectangular box 2 in plan view, a water stop material 3 is attached to the inner peripheral side of the lower end surface of the long side and the lower end surface of the short side. This water blocking material 3 has the same specifications as the first embodiment.

函体2は、筒状を周方向に分割するようにして形成された2つの函体分割体2A、2Bで構成されているが、3つ以上の函体分割体によって函体2を構成することもできる。函体分割体2A、2Bは、それぞれのフランジ部にボルトを通して、互いの合わせ面にシール材3aを介在させて組み付けることにより、筒状の函体2に形成される。函体分割体2A、2B(函体2)の下端面部は、設置する橋梁下部工14の形状に合わせて形成される。止水材3は、その下端面部に取り付けられる。   The box 2 is constituted by two box division bodies 2A and 2B formed so as to divide the cylindrical shape in the circumferential direction, and the box 2 is constituted by three or more box division bodies. You can also. The box bodies 2A and 2B are formed in the cylindrical box 2 by passing bolts through the respective flange portions and assembling them with the sealing material 3a interposed between the mating surfaces. The lower end surface part of the box body 2A, 2B (box 2) is formed in accordance with the shape of the bridge substructure 14 to be installed. The water stop material 3 is attached to the lower end surface portion thereof.

一方の函体分割体2Bの側面には、函体2の内部と外部とを連通可能な開閉する連通口6が設けられている。連通口6は、少なくとも1つの函体分割体2Bに1つ設ければよいが、複数設けることもできる。連通口6は、できるだけ函体分割体2B(函体2)の下方位置に設けることが好ましい。   A communication port 6 that opens and closes the inside and outside of the box 2 is provided on the side surface of one box body 2B. One communication port 6 may be provided in at least one box body 2B, but a plurality of communication ports 6 may be provided. It is preferable to provide the communication port 6 at a position below the box body 2B (box 2) as much as possible.

それぞれの函体分割体2A、2Bの下端面部に相当する位置に止水材3が取り付けられている。止水材3の背面には止水材3に沿ってゴムチューブ4が延設されている。それぞれのゴムチューブ4には、流体配管5が接続されている。流体給排手段10は制御装置11により制御される。   The water stop material 3 is attached to a position corresponding to the lower end surface portion of each box body 2A, 2B. A rubber tube 4 extends along the water-stopping material 3 on the back surface of the water-stopping material 3. A fluid pipe 5 is connected to each rubber tube 4. The fluid supply / discharge means 10 is controlled by the control device 11.

それぞれの函体分割体2A、2Bには、函体分割体2A、2B(函体2)を橋梁下部工14に対して固定する固定手段が設けられている。この実施形態では、固定手段(上部固定手段7や下部固定手段8)として函体分割体2A、2B(函体2)と橋梁下部工14のフーチング14bにアンカーボルト等によって固定された剛性アングル部材が用いられている。   Each box body 2A, 2B is provided with fixing means for fixing the box bodies 2A, 2B (box 2) to the bridge substructure 14. In this embodiment, a rigid angle member fixed to anchor divisions 2A and 2B (box 2) and a footing 14b of the bridge undercarriage 14 by anchor bolts or the like as fixing means (upper fixing means 7 and lower fixing means 8). Is used.

この止水作業函1を用いて止水作業空間を構築する手順は以下のとおりである。   The procedure for constructing a water stop working space using the water stop work box 1 is as follows.

まず、それぞれの函体分割体2A、2Bに浮体を取付けて、図17に例示するように、橋梁下部工14の柱部14aの外周を囲む所定位置まで水上移動させて、止水材3を対向するフーチング14bに当接させて載置する。   First, a floating body is attached to each box body divided body 2A, 2B, and as illustrated in FIG. 17, the water stop material 3 is moved to the predetermined position surrounding the outer periphery of the column portion 14a of the bridge substructure 14 by water. It is placed in contact with the opposing footing 14b.

この際に、連通口6は開いたままにしておく。函体分割体2A、2Bの合わせ面にシール材3aを介在させて、それぞれの函体分割体2A、2Bのフランジ部にボルトを通して互いを組み付けることによって、筒状の函体2が形成される。これにより函体2は、図15、図16に例示するように、橋梁下部工14を貫通させた状態になる。   At this time, the communication port 6 is left open. The cylindrical box 2 is formed by interposing the sealing material 3a between the mating surfaces of the box divisions 2A and 2B and assembling each other through bolts to the flange portions of the box divisions 2A and 2B. . Thereby, the box 2 is in a state in which the bridge substructure 14 is penetrated, as illustrated in FIGS. 15 and 16.

止水材3は、フーチング14bの表面形状に沿うように変形して、止水材3がフーチング14bの表面にすき間なく密着する。函体2内部には、外部の水Wが自由に出入りする状態になる。   The water-stopping material 3 is deformed so as to follow the surface shape of the footing 14b, and the water-stopping material 3 adheres closely to the surface of the footing 14b. Inside the box 2, the outside water W can freely enter and exit.

次いで、函体2を固定手段7(8)により橋梁下部工14に固定する。その後、ゴムチューブ4に流体Lを注入して所定の膨張圧力を負荷して膨張させる。   Next, the box 2 is fixed to the bridge substructure 14 by the fixing means 7 (8). Thereafter, the fluid L is injected into the rubber tube 4 and is inflated by applying a predetermined expansion pressure.

函体2を所定位置に固定した後は、連通口6を閉じた状態にして、函体2内部の水Wを函体2外部に排出することにより、函体2の内部に止水作業空間を構築することができる。   After the box 2 is fixed at a predetermined position, the communication port 6 is closed, and the water W inside the box 2 is discharged to the outside of the box 2 so that the water stop working space is placed inside the box 2. Can be built.

第1実施形態と同様にフーチング14bの表面が複雑な形状であっても、止水材3によって、漏水を生じさせるすき間がないように函体2を所定位置に設置することができる。   Similar to the first embodiment, even if the surface of the footing 14b has a complicated shape, the box 2 can be installed at a predetermined position by the water stop material 3 so that there is no gap that causes water leakage.

また、連通口6を開いて函体2内部に水Wを流入させた状態にしているので、函体2の内部と外部との水面位置は常に同じレベルになる。そのため、第1実施形態と同様に水圧差に起因する外力が函体2に作用することがない。   Moreover, since the communication port 6 is opened and the water W is allowed to flow into the box 2, the water surface positions inside and outside the box 2 are always at the same level. Therefore, the external force resulting from the water pressure difference does not act on the box 2 as in the first embodiment.

この実施形態においても、連通口6を閉じて函体2の内部の水Wを外部に排出した後に、ゴムチューブ4に流体Lを注入して所定の膨張圧力を負荷して膨張させることもできる。   Also in this embodiment, after the communication port 6 is closed and the water W inside the box 2 is discharged to the outside, the fluid L can be injected into the rubber tube 4 to be inflated by applying a predetermined expansion pressure. .

この実施形態では、止水材3をフーチング14bの上面および側面に止水材3を当接させるので、これに対応して、函体分割体2A、2B(函体2)の下端面および下端面の内周側に止水材3を設けている。したがって、函体2を完全にフーチング14aの上に載置するように設置する場合には、函体分割体2A、2B(函体2)の下端面のみに止水材3を設ければよい。   In this embodiment, the water-stopping material 3 is brought into contact with the upper surface and the side surface of the footing 14b. Accordingly, the lower end surface and the lower side of the box bodies 2A and 2B (box 2) corresponding to this. The water stop material 3 is provided on the inner peripheral side of the end face. Therefore, when installing the box 2 so as to be completely placed on the footing 14a, the water stop material 3 may be provided only on the lower end surfaces of the box division bodies 2A and 2B (box 2). .

第4実施形態のように、フーチング14bに対して止水作業函1を設置する場合は、例えば、図18に例示するように、函体分割体2A、2Bを完全にフーチング14bの上面に載置する構造にすることもできる。   When the water stop work box 1 is installed on the footing 14b as in the fourth embodiment, for example, as shown in FIG. 18, the box bodies 2A and 2B are completely mounted on the upper surface of the footing 14b. It can also be a structure to be placed.

また、図19に例示するように、函体分割体2A、2Bを高さ方向中途で上側を縮径するようにして、上側と下側との間に段差を設けた構造にすることもできる。この構造によると、段差の平坦部に作用する水圧によって函体分割体2A、2Bがフーチング14bに押圧されるので、安定して設置するには有利になる。   In addition, as illustrated in FIG. 19, the box divided bodies 2 </ b> A and 2 </ b> B may have a structure in which a step is provided between the upper side and the lower side so that the diameter of the upper side is reduced in the middle of the height direction. . According to this structure, the box bodies 2A and 2B are pressed against the footing 14b by the water pressure acting on the flat portion of the step, which is advantageous for stable installation.

尚、第1実施形態において説明した種々の仕様は、第2〜4実施形態でも適用することができる。   The various specifications described in the first embodiment can also be applied to the second to fourth embodiments.

1 止水作業函
2 函体
2A、2B 函体分割体
2a 貫通孔
3、3A、3B 止水材
3a シール材
4、4A、4B、4C ゴムチューブ
5 流体配管
6 連通口
7 上部固定手段
8 下部固定手段
8a アンカーボルト
8b ワイヤ
9 剛性体
10 流体給排手段
11 制御装置
12 壁状体
13、13a、13b、13c 杭状体
14 橋梁下部工
14a 柱部
14b フーチング
L 流体
W 水
DESCRIPTION OF SYMBOLS 1 Water stop work box 2 Box 2A, 2B Box division body 2a Through hole 3, 3A, 3B Water stop material 3a Seal material 4, 4A, 4B, 4C Rubber tube 5 Fluid piping 6 Communication port 7 Upper fixing means 8 Lower part Fixing means 8a Anchor bolt 8b Wire 9 Rigid body 10 Fluid supply / discharge means 11 Control device 12 Wall-like body 13, 13a, 13b, 13c Pile-like body 14 Bridge substructure 14a Column 14b Footing L Fluid W Water

Claims (12)

前面および上面を開口した函体を、この函体の前面の前端部に延設した止水材を水際の壁状体に当接させることにより所定位置に設置し、その後、この函体内部の水を外部に排出して函体内部に作業空間を構築する止水作業空間の構築方法であって、前記止水材が不透水性の軟質独立気泡体であり、この函体を所定位置に設置する際に、函体の内部と外部とを連通可能な連通口を開いて函体内部に水を流入させた状態にしながら、前記止水材を壁状体に当接させて、壁状体に対して函体を固定手段で固定し、次いで前記連通口を閉じて函体内部の水を外部に排出する前に、または、排出した後に、前記止水材に沿ってその背面に延設したゴムチューブを膨張させることにより止水材を壁状体に押圧することを特徴とする止水作業空間の構築方法。   A box with an open front and top surface is placed at a predetermined position by bringing a waterstop extending from the front end of the box into contact with the wall at the waterfront. A method for constructing a water stop working space in which water is discharged outside to construct a work space inside the box, wherein the water stop material is a water-impermeable soft closed cell body, and the box is placed at a predetermined position. When installing, the water blocking material is brought into contact with the wall-shaped body while opening the communication port that allows the interior and exterior of the box to communicate with each other and allowing water to flow into the box. The box is fixed to the body with a fixing means, and then the communication port is closed and the water inside the box is discharged to the outside before or after the water is extended along the water-stopping material to the back surface. Construction method of water stop working space characterized by pressing a water stop material against a wall-like body by expanding a rubber tube . 前記ゴムチューブを延設方向で複数に分割した構成にして、分割したそれぞれのゴムチューブの膨張を独立して制御する請求項1に記載の止水作業空間の構築方法。   The construction method of the water stop working space according to claim 1, wherein the rubber tube is divided into a plurality of parts in the extending direction, and the expansion of each divided rubber tube is controlled independently. 前記ゴムチューブを延設方向で上下に複数に分割した構成にして、分割したそれぞれのゴムチューブを膨張させる際の膨張圧力を、下方に位置するゴムチューブよりも上方に位置するゴムチューブにおいて高くする請求項2に記載の止水作業空間の構築方法。   The rubber tube is divided into a plurality of upper and lower parts in the extending direction, and the expansion pressure when expanding each divided rubber tube is increased in the rubber tube located above the rubber tube located below. The construction method of the still water working space according to claim 2. 上面を開口した有底の函体の底面の貫通孔に、水中に立設する杭状体を貫通させて、この杭状体の外周を囲むようにして、この函体を所定位置に設置し、その後、この函体内部の水を外部に排出して函体内部に作業空間を構築する止水作業空間の構築方法であって、前記函体の底面を分割するように複数の函体分割体を形成し、それぞれの函体分割体の前記貫通孔に相当する位置に止水材を取付け、この止水材が不透水性の軟質独立気泡体であり、それぞれの函体分割体を組み付けて前記函体を形成して、前記貫通孔に貫通させた杭状体に前記止水材を当接させた状態で杭状体の外周を囲むように函体を所定位置に設置する際に、前記函体分割体に設けた函体の内部と外部とを連通可能な連通口を開いて函体内部に水を流入させた状態にしながら、前記止水材を杭状体に当接させて、杭状体に対して函体を固定手段で固定し、次いで前記連通口を閉じた状態にして函体内部の水を外部に排出する前に、または、排出した後に、前記止水材に沿ってその背面に延設したゴムチューブを膨張させることにより止水材を杭状体に押圧することを特徴とする止水作業空間の構築方法。   A pile-shaped body standing in the water is passed through the bottom hole of the bottomed box with the top open, and this box is installed at a predetermined position so as to surround the outer periphery of the pile-shaped body. A water stop working space construction method for constructing a work space inside the box by discharging water inside the box to the outside, wherein a plurality of box pieces are divided so as to divide the bottom surface of the box. Forming and attaching a water stop material at a position corresponding to the through hole of each box body, the water stop material is a water-impermeable soft closed cell body, and assembling each box body When the box is installed at a predetermined position so as to surround the outer periphery of the pile-shaped body in a state in which the water-stopping material is in contact with the pile-shaped body that is penetrated through the through hole, the box is formed. Open the communication port that allows the inside and outside of the box provided in the box body to communicate, and make sure that water flows into the box. Then, the water-stopping material is brought into contact with the pile-shaped body, the box is fixed to the pile-shaped body with fixing means, and then the water inside the box is discharged to the outside with the communication port closed. Before or after discharging, the water stop material is pressed against the pile-like body by inflating a rubber tube extending on the back surface along the water stop material. Construction method. 上面および下面を開口した筒状の函体に、水中に立設する構造物を貫通させた状態にして、この函体の下端面部に設けた止水材を、構造物の対向する面に当接させることにより所定位置に設置し、その後、この函体内部の水を外部に排出して函体内部に作業空間を構築する止水作業空間の構築方法であって、前記筒状の函体を周方向に分割するように複数の函体分割体を形成し、それぞれの函体分割体の前記下端面部に相当する位置に止水材を取付け、この止水材が不透水性の軟質独立気泡体であり、それぞれの函体分割体を組み付けて前記筒状の函体を形成して、この函体に構造物を貫通させて前記止水材を対向する面に当接させた状態で、この函体を所定位置に設置する際に、前記函体分割体に設けた函体の内部と外部とを連通可能な連通口を開いて函体内部に水を流入させた状態にしながら、前記止水材を対向する面に当接させ、構造物に対して函体を固定手段で固定して、次いで前記連通口を閉じてこの函体内部の水を外部に排出する前に、または、排出した後に、前記止水材に沿ってその背面に延設したゴムチューブを膨張させることにより止水材を対向する面に押圧することを特徴とする止水作業空間の構築方法。   With the cylindrical box with the upper and lower surfaces open and with the structure standing underwater penetrating, the water-stopping material provided on the bottom surface of this box is applied to the opposite surface of the structure. It is a method for constructing a water stop working space that is installed at a predetermined position by contact, and then drains the water inside the box to the outside to build a work space inside the box. A plurality of box bodies are formed so as to be divided in the circumferential direction, and a water stop material is attached to a position corresponding to the lower end surface portion of each box body, and the water stop material is impervious to soft independent In the state where each box body is assembled to form the cylindrical box body, the structure is passed through the box body, and the water blocking material is brought into contact with the opposing surface. When the box is installed at a predetermined position, the inside and outside of the box provided in the box divided body can communicate with each other. While the mouth is opened and water is allowed to flow into the box, the water blocking material is brought into contact with the opposite surface, the box is fixed to the structure with fixing means, and then the communication port is Before or after discharging the water inside the box to the outside, or after discharging, the rubber tube extending on the back surface along the water blocking material is inflated to bring the water blocking material to the opposite surface. The construction method of the water stop working space characterized by pressing. 前面および上面を開口した函体と、この函体の前面の前端部に延設された止水材とを備えた止水作業函であって、前記止水材が不透水性の軟質独立気泡体であり、この止水材に沿ってその背面に延設される膨張するゴムチューブと、前記函体の内部と外部とを連通可能な開閉する連通口と、前記止水材が当接する水際の壁状体に対して函体を固定する固定手段と、を設けたことを特徴とする止水作業函。   A water stop working box comprising a box having an opening on the front surface and an upper surface, and a water stop material extending at a front end portion of the front surface of the box, wherein the water stop material is a water-impermeable soft closed cell. A rubber tube that expands along the water-stopping material along the back surface thereof, a communication port that opens and closes the inside and outside of the box, and a water surface where the water-stopping material abuts. And a fixing means for fixing the box to the wall of the water stop work box. 底面に貫通孔を有し上面を開口した有底の函体と、この貫通孔に設けられた止水材とを備えた止水作業函であって、前記函体をその底面を分割するように形成した複数の函体分割体で構成し、前記止水材が不透水性の軟質独立気泡体であり、この止水材をそれぞれの函体分割体の前記貫通孔に相当する位置に取付けるとともに、この止水材に沿ってその背面に延設される膨張するゴムチューブと、少なくとも1つの函体分割体に設けられる函体の内部と外部とを連通可能な開閉する連通口と、前記貫通孔を貫通して前記止水材が当接する水中に立設する杭状体に対して函体を固定する固定手段と、を設けたことを特徴とする止水作業函。   A water stop working box having a bottomed box having a through hole on the bottom surface and having an open top surface, and a water blocking material provided in the through hole, so that the bottom surface of the box is divided. The water blocking material is an impermeable soft closed cell body, and the water blocking material is attached to a position corresponding to the through hole of each box divided body. And an inflating rubber tube extending on the back surface along the water blocking material, a communication port for opening and closing the inside and outside of the box provided in at least one box body, and A water stop work box, comprising: a fixing means for fixing the box to a pile-like body standing through water through the through-hole and contacting the water stop material. 上面および下面を開口した筒状の函体と、この函体の下端面部に設けられた止水材とを備えた止水作業函であって、前記筒状の函体を周方向に分割するように形成した複数の函体分割体で構成し、前記止水材が不透水性の軟質独立気泡体であり、この止水材をそれぞれの函体分割体の前記下端面部に相当する位置に取付けるとともに、この止水材に沿ってその背面に延設される膨張するゴムチューブと、少なくとも1つの函体分割体に設けられる函体の内部と外部とを連通可能な開閉する連通口と、前記函体を貫通して水中に立設する構造物に対して函体を固定する固定手段と、を設けたことを特徴とする止水作業函。   A water stop working box provided with a cylindrical box having an upper surface and a lower surface opened, and a water stop material provided on a lower end surface portion of the box, and the cylindrical box is divided in a circumferential direction. The water-stopping material is a water-impermeable soft closed cell body, and the water-stopping material is placed at a position corresponding to the lower end surface portion of each box-shaped split body. An expansion rubber tube extending on the back surface along the water blocking material, and a communication opening for opening and closing the inside and outside of the box provided in at least one box body; A water stop working box, comprising: fixing means for fixing the box to a structure that penetrates the box and stands in water. 前記止水材の硬さを厚さ方向で異ならせ、前面側をゴムチューブ側よりも柔らかくした請求項6〜8のいずれかに記載の止水作業函。   The water stop work box according to any one of claims 6 to 8, wherein the hardness of the water stop material is varied in the thickness direction, and the front side is made softer than the rubber tube side. 前記止水材の前面とゴムチューブとの間に、止水材およびゴムチューブよりも剛性の高い剛性体を介在させた請求項6〜9のいずれかに記載の止水作業函。   The water stop work box according to any one of claims 6 to 9, wherein a rigid body having rigidity higher than that of the water stop material and the rubber tube is interposed between the front surface of the water stop material and the rubber tube. 前記ゴムチューブを延設方向で複数に分割した構成にして、分割したそれぞれのゴムチューブの膨張を独立して制御する制御装置を設けた請求項6〜10のいずれかに記載の止水作業函。   The water stop work box according to any one of claims 6 to 10, wherein the rubber tube is divided into a plurality of parts in the extending direction, and a control device for independently controlling expansion of each divided rubber tube is provided. . 前記止水材の前面が、当接する対象物の表面形状に対応した形状に予め形成されている請求項6〜11のいずれかに記載の止水作業函。   The water stop work box according to any one of claims 6 to 11, wherein a front surface of the water stop material is formed in advance in a shape corresponding to a surface shape of an object to be contacted.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014025280A (en) * 2012-07-27 2014-02-06 Toa Harbor Works Co Ltd Method for constructing waterproof working space and waterproof working caisson

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08253949A (en) * 1995-03-15 1996-10-01 Nikko Boshoku Kk Corrosion-proof coating structure of steel material and corrosion-proofing method
JP2003049442A (en) * 2001-08-06 2003-02-21 Taisei Corp Flexible joint device for submerged caisson and its repair method
JP2003212186A (en) * 2002-01-23 2003-07-30 Ihi Amtec Co Ltd Water-stopping box for repairing under water structure and repairing method for under water structure using the same
JP2007321368A (en) * 2006-05-30 2007-12-13 Tostem Corp Opening device
JP2010065399A (en) * 2008-09-08 2010-03-25 Toa Harbor Works Co Ltd Method of constructing water cut-off working space and water cut-off working box

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08253949A (en) * 1995-03-15 1996-10-01 Nikko Boshoku Kk Corrosion-proof coating structure of steel material and corrosion-proofing method
JP2003049442A (en) * 2001-08-06 2003-02-21 Taisei Corp Flexible joint device for submerged caisson and its repair method
JP2003212186A (en) * 2002-01-23 2003-07-30 Ihi Amtec Co Ltd Water-stopping box for repairing under water structure and repairing method for under water structure using the same
JP2007321368A (en) * 2006-05-30 2007-12-13 Tostem Corp Opening device
JP2010065399A (en) * 2008-09-08 2010-03-25 Toa Harbor Works Co Ltd Method of constructing water cut-off working space and water cut-off working box

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014025280A (en) * 2012-07-27 2014-02-06 Toa Harbor Works Co Ltd Method for constructing waterproof working space and waterproof working caisson

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