JPH08120676A - Earth retaining timbering detaching method and device therefor - Google Patents

Abstract

PURPOSE: To make is possible to carry out efficiently and safely installation/ demolition work of an earth retaining timbering applied around a cut/excavation place for ground cut or underground excavation when an underground structure is buried or constructed in civil engineering/building works. CONSTITUTION: A detaching device 1 consisting of a pushing member 4 formed in a expansible manner for pressure contact or separation through liquid pressure, a expansible expansion regulating member 3 connected to the pushing member 4 and a spacer 2 with specific length connected to the expansion regulating member 3 is used to at least one of walings 35 fixed to earth retaining walls 31 opposed to each other. When a shore strut provided between the walings 35 or the walings are installed or removed, the detaching device 1 is expanded and operated to widen an interval between the walings 35 fixed to the earth retaining walls 31 opposed to each other.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は山留支保工脱着方法及び
その装置に関し、特には土木・建築工事等における地下
構造物の埋設又は構築に際して、地表開削又は地下掘削
のために開削・掘削場所の周囲に施す山留支保工の設置
・解体作業を効率良く、かつ、安全に施工するためのも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of attaching and detaching a mountain retaining bar and an apparatus therefor, and in particular, when burying or constructing an underground structure in civil engineering / construction work, etc. The purpose of this work is to efficiently and safely install and dismantle the Yamadome shoring around the building.

【０００２】[0002]

【従来の技術】地中に下水道管やケーブル導入管等を埋
設するために、或は各種の構造物や建築物の構築・建築
に際して、地中溝や穴を開削する場合、先ず開削箇所に
複数の鋼矢板を連続して打ち込み、或は所定の間隔で打
ち込んだＨ型鋼杭等の間に板体を介在させて、溝の両側
又は穴の周囲に土留壁を形成し、その土留壁で囲まれた
内部の土を取り除いて溝又は穴を形成する。この際、土
留壁の倒壊を防止するために、相対向する土留壁間に山
留支保工を介在させて補強をする。2. Description of the Related Art In order to bury sewer pipes, cable introduction pipes, etc. in the ground, or when building or constructing various structures or buildings, when excavating underground trenches and holes, first, a plurality of excavation points are to be cut. Steel sheet pile is continuously driven, or a plate body is interposed between H type steel piles etc. driven at a predetermined interval to form soil retaining walls on both sides of the groove or around the hole, and surrounded by the soil retaining wall. Remove the soil inside to form a groove or hole. At this time, in order to prevent the retaining walls from collapsing, mountain retaining supports are interposed between the opposing retaining walls for reinforcement.

【０００３】山留支保工は、図６，７に示すように、先
づ鋼矢板３０（或は図８に示すようなＨ型鋼杭３０ａ）
を地中に打ち込んで土留壁３１，３２，３３，３４で開
削すべき箇所を画成し、その囲まれた内部の土を除去し
て相対向する３１，３３にそれぞれ腹起材３５，３５を
当てて水平に固定すると共に、該腹起材３５，３５間の
両端部に同様にして腹起材３５ａ，３５ａを当てて水平
に固定して、腹起材３５，３５ａによって土留壁３１，
３２，３３，３４の内周部を囲繞する。次に腹起材３
５，３５の間に切梁材３６を介在させる。この切梁材３
６は所定長さの断面Ｈ型鋼材からなるものであって、相
対向する土留壁３１，３３にそれぞれ固定した腹起材３
５，３５間の間隔寸法と略等しい長さに作成されたも
の、若しくは所定長さ寸法のものを継ぎ足して構成され
ており、腹起材３５，３５間の突っ張りとして介在させ
るものである。なお、図６において切梁材３６は１本図
示されているのみであるが、一定間隔毎にで複数のもの
を介在させるものである。３７はコーナー部の補強をす
る火打ち梁である。As shown in FIGS. 6 and 7, the steel retaining rods first have steel sheet piles 30 (or H-shaped steel piles 30a as shown in FIG. 8).
Of the earth retaining wall 31, 32, 33, 34 to demarcate the area to be excavated, and remove the soil inside the enclosed area to remove the soil inside the area 31 and 33 facing each other. And then horizontally fix the same, and similarly, both ends of the uprising members 35, 35 are also horizontally fixed by applying the uprising members 35a, 35a.
The inner peripheral portion of 32, 33, 34 is surrounded. Next uprising material 3
A beam member 36 is interposed between 5, 35. This beam material 3
Reference numeral 6 is made of an H-shaped steel material having a predetermined length, and the uprising material 3 fixed to the soil retaining walls 31 and 33 facing each other.
It is formed by adding pieces having a length substantially equal to the space dimension between 5, 5 and 35 or having a predetermined length dimension, and is interposed as a strut between the uprising members 35, 35. It should be noted that although only one cutting beam member 36 is shown in FIG. 6, a plurality of cutting beam members 36 are interposed at regular intervals. Reference numeral 37 is a fired beam that reinforces the corner portion.

【０００４】この切梁材３６には通常キリンジャッキと
称する伸縮調節部材３８が介在されている。伸縮調節部
材３８としてのキリンジャッキは、図１１に示すよう
に、ハンドル４３を回転させれば、ねじ係合する内筒体
４４が外筒体４５から伸縮できるようにした公知のもの
である。An expansion / contraction adjusting member 38, which is usually called a giraffe jack, is interposed in the beam member 36. As shown in FIG. 11, the giraffe jack as the expansion / contraction adjusting member 38 is a known one in which the inner cylinder body 44 engaged with a screw can be expanded and contracted from the outer cylinder body 45 by rotating the handle 43.

【０００５】腹起材３５は、図８，９に示すように、Ｈ
型鋼杭３０ａ（或は図６に示すような鋼矢板３０）に一
定高さでブラケット３９を固定し、そのブラケット３９
上に腹起材３５を載置して固定し、腹起材３５とＨ型鋼
杭３０ａとの間にモルタル等の裏込コンクリート４０を
介在させて補強してある。なお、図８，９では、Ｈ型鋼
杭３０ａを所定間隔で打ち込んで、それらのＨ型鋼杭３
０ａの間に板体４１を介在して土留壁を形成しているも
のであり、図６，図１０に示すように、鋼矢板３０を連
接して打ち込んで土留壁３１を形成したときは腹起材３
５と鋼矢板３０との間に通常裏込コンクリート４２を打
設する。また、腹起材３５ａ，３５ａも腹起材３５，３
５の両端部間に腹起材３５，３５と同様に設置する。[0005] As shown in FIGS.
The bracket 39 is fixed to the shaped steel pile 30a (or the steel sheet pile 30 as shown in FIG. 6) at a constant height, and the bracket 39 is fixed.
The upholstery material 35 is placed and fixed thereon, and a backfill concrete 40 such as mortar is interposed between the upholstery material 35 and the H-shaped steel pile 30a for reinforcement. In addition, in FIGS. 8 and 9, the H-shaped steel piles 30a are driven at a predetermined interval to remove the H-shaped steel piles 3a.
The earth retaining wall is formed by interposing a plate body 41 between 0a, and when the earth retaining wall 31 is formed by connecting steel sheet piles 30 as shown in FIGS. Starting material 3
A backfill concrete 42 is usually placed between the steel sheet pile 5 and the steel sheet pile 30. In addition, the upholstery materials 35a, 35a are also the upholstery materials 35, 3
It installs between both ends of 5 like the uprising material 35,35.

【０００６】したがって、土留壁が敷設され、土留壁間
の土を除去した後、土留壁の内周部ににブラケットを介
して腹起材を固定し、腹起材間の間隔寸法とほぼ等しく
作成した切梁材をクレーン等にて吊り上げて腹起材間に
降ろし、切梁材の両端部を腹起材に当て、伸縮調節部材
を適宜伸長させて腹起材を土留壁側へ加圧する状態で介
在させる。これらの腹起材及び切梁材は土留壁の倒壊を
防止するのである。そして、この腹起材及び切梁材は、
図７に示すように、溝の深さ方向へ必要な所定段数が設
置される。Therefore, after the soil retaining walls are laid and the soil between the soil retaining walls is removed, the upholstery material is fixed to the inner peripheral portion of the soil retaining wall via the bracket, and the distance between the upholstery materials is approximately equal to the space dimension. Lift the created cutting beam with a crane etc. and lower it between the upholstery materials, apply both ends of the cutting beam to the upholstery material, and appropriately extend the expansion and contraction adjusting member to press the upholstery material to the soil retaining wall side. Intervene in the state. These uprising materials and beam members prevent the retaining wall from collapsing. And, this uprising material and cutting beam material,
As shown in FIG. 7, a required number of steps is installed in the depth direction of the groove.

【０００７】そのため、下水道管等の埋設工事が終了し
た後、土留壁を撤去する際に、腹起材及び切梁材を取り
外して解体しなければならないが、相対向する土留壁に
それぞれ固定した腹起材の間に介在させた腹起材及び切
梁材の取外し作業はかなり面倒な作業となることは周知
である。Therefore, when the earth retaining wall is to be removed after the burial work for the sewer pipe or the like is completed, the uprising material and the cutting beam must be removed and disassembled, but they are fixed to the opposing earth retaining walls respectively. It is well known that the work of removing the upholstery material and the timber beam material interposed between the upholstery materials is considerably troublesome.

【０００８】すなわち、腹起材及び切梁材は土留壁が受
ける土圧を直接に負荷しているために、伸縮調節部材を
操作してそれが緩み切梁材が土留壁側へ加圧する状態を
解除することにより、切梁材を簡単にクレーン等にて吊
り上げて撤去できる場合は希であって、多くは、伸縮調
節部材を操作できない程度に大きな土圧を受けている場
合が多い。That is, since the uprising member and the cutting beam directly load the earth pressure applied to the retaining wall, the expansion adjusting member is operated to loosen the pressing member to the retaining wall side. It is rare that the cutting beam can be easily lifted up and removed by a crane or the like by releasing, and in many cases, the earth pressure is so great that the expansion adjusting member cannot be operated.

【０００９】したがって、そのような場合には、腹起材
及び切梁材撤去のために、強大な揚重力を有するクレー
ンを用いて腹起材及び切梁材の両端を無理矢理吊り上げ
て解体するか、重機械であるバックホーや重錘のモンケ
ン等にて衝撃を切梁材に加えてこれを外して解体する
か、若しくは裏込材を撤去し、腹起材及び切梁材にかか
る荷重を少なくした後、強大な揚重力を有するクレーン
を用いて腹起材及び切梁材の両端を無理矢理吊り上げて
解体するか、又は腹起材及び切梁材の一部を端部から切
断し荷重を少なくして強大な揚重力を有するクレーンを
用いて腹起材及び切梁材の両端を無理矢理吊り上げて解
体するか、等の手段が行われている。Therefore, in such a case, in order to remove the upholstery material and the cutting beam, is it necessary to lift up and dismantle both ends of the uprising material and the cutting beam by using a crane having a strong lifting force? Add a shock to the cutting beam by using a heavy machine such as a backhoe or a weight sag, or remove it to remove it, or remove the backing material to reduce the load on the upholstery material and cutting beam. After that, use a crane with a strong lifting force to forcibly lift and dismantle both ends of the upholstery material and cutting beam, or cut a part of the uprising material and cutting beam from the end to reduce the load. Then, by using a crane having a strong lifting force, the both ends of the upholstery material and the girder material are forcibly lifted and disassembled, or the like.

【００１０】[0010]

【発明が解決しようとする課題】しかしながら、腹起材
及び切梁材撤去のために、強大な揚重力を有するクレー
ンを用いて腹起材及び切梁材の両端を無理矢理吊り上げ
て解体する方法は、腹起材及び切梁材を損傷すること、
大型のクレーン等を用いなければならないから不経済で
あり、又腹起材及び切梁材を無理矢理に揚重することに
よる危険が想定され、危険である。However, in order to remove the upholstery material and the cutting beam material, a method of forcibly lifting up and disassembling both ends of the uprising material and the cutting beam material using a crane having a strong lifting force is proposed. Damage to the upholstery material and the timber material,
It is uneconomical because a large crane or the like must be used, and there is a risk that it is possible to forcibly lift hoisting materials and beam members, which is dangerous.

【００１１】また、バックホーやモンケン等にて衝撃を
腹起材及び切梁材に加えてこれを外して解体する方法は
現場の設備や広さが問題となり、又腹起材及び切梁材を
損傷するおそれが大きい他、見るからにスマートさに欠
ける施工方法である。In addition, the method of adding a shock to the upholstery material and the cutting beam with a backhoe or a Monken and then removing it and disassembling it causes a problem in terms of equipment and space at the site. This is a construction method that is highly likely to be damaged and lacks smartness when viewed.

【００１２】さらに、裏込材を撤去し、腹起材及び切梁
材にかかる荷重を少なくする方法は労費が多く掛かり、
又確実視できないほか、時間がかかるために不経済であ
る。Further, the method of removing the backing material and reducing the load applied to the upholstery material and the beam material is labor-intensive,
In addition, it cannot be seen reliably and it is uneconomical because it takes time.

【００１３】腹起材及び切梁材の一部を端部から切断し
荷重を少なくする方法は、腹起材及び切梁材を損傷する
ことは勿論、大型のクレーンを用いなければならないか
ら不経済、かつ、危険である。The method of cutting a part of the upholstery material and the cut beam from the end to reduce the load is not only because the upholstery material and the cut beam are damaged but also a large crane must be used. Economical and dangerous.

【００１４】また、腹起材及び切梁材を設置する際に
も、土留壁には土圧が掛かっているため、僅かであって
も土留壁は内側に撓む傾向にある。そこで、腹起材及び
切梁材を設置する前に腹起材を介して土留壁を外側に押
して原状の状態を維持させて設置することが望ましい。
特に開削・掘削箇所の近傍に建築物や地下埋設物がある
工事においてはその要求が強い。そこで、都市部の極め
て大規模な工事においては所謂プレロード工法（既加圧
工法）が行われているが、それ以外の一般的な中小規模
の工事では、土留壁の原状を維持させた状態で腹起材及
び切梁材を設置することは殆ど行われていない。Further, even when the uprising member and the truss member are installed, the earth retaining wall is subjected to earth pressure, so that the earth retaining wall tends to bend inward even if it is slight. Therefore, it is desirable to push the earth retaining wall to the outside through the upholstery material before installing the upholstery material and the truss material so that the original state is maintained.
There is a strong demand for this, especially in construction work where there are buildings and underground buried objects near the excavation / excavation site. Therefore, the so-called preloading method (pressurized construction method) is used for extremely large-scale construction in urban areas, but for other general small- and medium-scale construction, the original state of the retaining wall is maintained. Almost no installation of uprising materials and beam members.

【００１５】そこで本発明は、上記事情に鑑み、山留支
保工の設置及び解体を、安全、かつ、迅速に、しかも経
済的に、行えることを目的とした山留支保工脱着方法及
びその装置を提供する。In view of the above-mentioned circumstances, the present invention has been made in view of the above circumstances, and a method and an apparatus for attaching and detaching a mountain retaining rod for the purpose of safely and promptly and economically installing and dismantling the mountain retaining rod. I will provide a.

【００１６】[0016]

【課題を解決するための手段】本発明は山留支保工脱着
方法として、相対向する土留壁にそれぞれ腹起材を固定
し、該腹起材に切梁材又は腹起材の両端部をそれぞれ当
接させて土留壁間の開削空間に介在させることにより土
留壁の倒壊を防止する山留支保工施工方法において、相
対向する土留壁にそれぞれ固定した腹起材の少なくとも
一方に圧接又は離反するために液圧を介し伸縮可能に形
成された押圧部材と、この押圧部材に連結して伸縮動作
可能な伸縮調節部材と、この伸縮調節部材に連結された
所定長さのスペーサーとからなる脱着装置を用い、該腹
起材間に介在させる切梁材若しくは腹起材の設置又は撤
去施工時に前記脱着装置を伸長操作して相対向する土留
壁にそれぞれ固定した腹起材の間隔を拡幅する構成を提
供する。Means for Solving the Problems The present invention provides a method for attaching and detaching a mountain retaining bar, in which the upholstery members are fixed to the mutually facing soil retaining walls, and the beam members or both ends of the upholstery member are attached to the upholstery member. In a construction method of a mountain retaining method that prevents the retaining walls from collapsing by placing them in contact with each other and interposing them in the open space between the retaining walls, at least one of the uprising members fixed to the opposing retaining walls is pressed or separated. For attachment / detachment, which includes a pressing member formed to be expandable / contractible via hydraulic pressure, an expansion / contraction adjusting member that is connected to the pressing member and can expand / contract, and a spacer of a predetermined length connected to the expansion / contraction adjusting member. Using a device, the installation / removal device is extended during installation or removal of the cut beam or the upholstery material interposed between the upholstery materials to widen the intervals of the upholstery materials fixed to the soil retaining walls facing each other. Provide the configuration.

【００１７】また、相対向する土留壁にそれぞれ腹起材
を固定し、該腹起材に切梁材又は腹起材の両端部をそれ
ぞれ当接させて土留壁間の開削空間に介在させることに
より土留壁の倒壊を防止する山留支保工施工方法におい
て、相対向する土留壁にそれぞれ固定した腹起材に懸架
し該腹起材の側面に垂下して重なる一端側の係止具と、
この係止具を端部に連結し液圧を介して伸縮することに
より該腹起材に圧接又は離反する押圧部材と、この押圧
部材に連結して伸縮作動可能な伸縮調節部材と、この伸
縮調節部材に連結された所定長さのスペーサーと、この
スペーサーの端部に連結して該腹起材に懸架し該腹起材
の側面に垂下して重なる他端側の係止具とからなる脱着
装置を用い、該腹起材間に介在させる切梁材若しくは腹
起材の設置又は撤去施工時に前記脱着装置を伸長操作し
て相対向する土留壁にそれぞれ固定した腹起材の間隔を
拡幅する構成を提供する。[0017] Further, the upholstery material is fixed to the soil retaining walls facing each other, and both ends of the cut beam material or the upholstery material are brought into contact with the upholstery material so as to intervene in the open space between the soil retaining walls. In the Yamadome support construction method for preventing the collapse of the retaining wall by, the one end side locking device that is suspended on the uprising material fixed to the opposing retaining wall and hangs down on the side surface of the uprising material and overlaps,
A pressing member that presses or separates from the reentry material by connecting the locking member to an end portion and expanding and contracting via hydraulic pressure, an expansion and contraction adjusting member that is connected to the pressing member and can perform expansion and contraction, and the expansion and contraction. It comprises a spacer of a predetermined length connected to the adjusting member, and a locking member on the other end side that is connected to the end portion of the spacer and is suspended on the uprising material and hangs down from the side surface of the uprising material to overlap. Using the desorption device, when installing or removing the cutting beam or the upholstery material to be interposed between the uprising members, the desorption device is extended to widen the interval between the uprising members fixed to the opposing soil retaining walls. To provide the configuration.

【００１８】さらに、係止具は相対向する土留壁にそれ
ぞれ固定した腹起材の上面に懸架する上辺部と該腹起材
の側面に重なる下辺とを有する略逆Ｌ字型体からなり、
下辺の中央部に前記押圧部材の端面中央に突設した主突
起部が嵌合する長孔が上下方向に穿設され、該長孔に主
突起部を嵌合した後上下動調節して押圧部材及びスペー
サーに固定することにより、相対向する土留壁にそれぞ
れ固定した腹起材の側面中央部に当接させる位置決めが
できる構成を提供する。Further, the engaging member is a substantially inverted L-shaped body having an upper side portion suspended on the upper surface of the upholstery material fixed to the soil retaining walls facing each other and a lower side overlapping with the side surface of the uprising material,
A long hole into which a main projection protruding from the center of the end surface of the pressing member fits is formed in the center of the lower side in the up-down direction, and the main projection is fitted into the long hole and then vertically adjusted for pressing. By fixing to members and spacers, there is provided a configuration in which positioning can be performed so as to abut the center portions of the side faces of the uprising members fixed to the soil retaining walls facing each other.

【００１９】そして、本発明は山留支保工脱着装置とし
て、相対向する土留壁にそれぞれ固定した腹起材の少な
くとも一方に圧接又は離反するために液圧を介し伸縮可
能に形成された押圧部材と、この押圧部材に連結して伸
縮動作可能な伸縮調節部材と、この伸縮調節部材に連結
された所定長さのスペーサーとからなる構成を提供す
る。Further, the present invention is a mountain retaining support attachment / detachment device, which is capable of expanding and contracting via hydraulic pressure so as to be pressed against or separated from at least one of the uprising members fixed to the opposing soil retaining walls. And a stretchable adjustment member that is stretchable when connected to the pressing member, and a spacer having a predetermined length that is coupled to the stretchable adjustment member.

【００２０】さらに、相対向する土留壁にそれぞれ固定
した腹起材に懸架し該腹起材の側面に垂下して重なる一
端側の係止具と、この係止具を端部に連結し液圧を介し
て伸縮することにより該腹起材に圧接又は離反する押圧
部材と、この押圧部材に連結して伸縮作動可能な伸縮調
節部材と、この伸縮調節部材に連結された所定長さのス
ペーサーと、このスペーサーの端部に連結して該腹起材
に懸架し該腹起材の側面に垂下して重なる他端側の係止
具とからなる構成、係止具は相対向する土留壁にそれぞ
れ固定した腹起材の上面に懸架する上辺部と該腹起材の
側面に重なる下辺とを有する略逆Ｌ字型体からなり、下
辺の中央部に前記押圧部材の端面中央に突設した主突起
部が嵌合する長孔が上下方向に穿設されている構成、押
圧部材は外筒体と内筒体とからなり、かつ、外筒体と内
筒体間に圧油を注入し又は排出するためのバルブを有す
る構成、及び伸縮調節部材は外筒体と内筒体を油圧シリ
ンダで伸縮可能に連結してなり、かつ、内筒体の長手方
向へ所定間隔で複数の透孔が穿設され、この透孔と合致
してピンを挿通する透孔が外筒体に穿設されてなる構成
を提供する。Furthermore, a hook on one end side, which is suspended on the upholstery material fixed to the opposing soil retaining walls and hangs down from the side surface of the upholstery material and overlaps, is connected to the end portion of the liquid. A pressing member that presses against or separates from the uprising member by expanding and contracting through pressure, an expansion and contraction adjusting member that is connected to the pressing member and can expand and contract, and a spacer of a predetermined length connected to the expansion and contraction adjusting member. And a locking member on the other end side that is connected to the end portion of the spacer and is suspended from the uprising material and hangs down on the side surface of the uprising material so as to overlap with each other. Each of them is composed of a substantially inverted L-shaped body having an upper side portion suspended on the upper surface of the uprising material and a lower side overlapping with the side surface of the uprising material, and is provided at the center of the lower side so as to project at the center of the end surface of the pressing member. A long hole into which the main projection is fitted is bored in the vertical direction, and the pressing member is an outer cylinder. It is composed of a cylinder and has a valve for injecting or discharging pressure oil between the outer cylinder and the inner cylinder, and the expansion and contraction adjusting member can expand and contract the outer cylinder and the inner cylinder with a hydraulic cylinder. A plurality of through holes are formed at predetermined intervals in the longitudinal direction of the inner cylindrical body, and through holes are formed in the outer cylindrical body so as to match the through holes and insert the pins. Provide the configuration.

【００２１】[0021]

【作用】上記構成の本発明によれば、相対向する土留壁
にそれぞれ固定した腹起材間に脱着装置を介在させ、伸
縮調節部材を伸縮調節して押圧部材を該腹起材に当接さ
せ、その後、押圧部材を操作して該腹起材を外側へ押圧
するように油圧力をかけることにより、土留壁の間隔を
拡げて腹起材及び切梁材の負荷を解除又は軽減して容易
に、かつ、きわめて安全に撤去できる。According to the present invention having the above-mentioned structure, a detaching device is interposed between the uprising members fixed to the soil retaining walls facing each other, and the expansion and contraction adjusting member is adjusted to expand and contract to bring the pressing member into contact with the uprising members. After that, by operating the pressing member and applying hydraulic pressure so as to press the uprising material to the outside, the interval of the earth retaining wall is expanded to release or reduce the load on the uprising material and the cutting beam material. It is easy and extremely safe to remove.

【００２２】また、係止具を用いることにより、切梁材
の両端部を相対向する土留壁にそれぞれ固定した腹起材
の側面中央部に位置させて芯出しした状態で当接させる
ことができ、該腹起材間の間隔を拡げる力を効果的に伝
達できる。Further, by using the locking tool, both ends of the beam member can be positioned in the center of the side surface of the uprising member fixed to the soil retaining walls facing each other and brought into contact with each other while being centered. Therefore, it is possible to effectively transmit the force for expanding the space between the uprising members.

【００２３】なお、腹起材及び切梁材の設置に際して
も、前記同様にして土留壁にプレロードをかけることに
より、該腹起材間の間隔寸法を拡大して所定長さの腹起
材及び切梁材を設置することができる。When installing the upholstery material and the truss material, a preload is applied to the earth retaining wall in the same manner as described above, thereby expanding the interval dimension between the upholstery material and the upholstery material of a predetermined length. It is possible to install wood beams.

【００２４】[0024]

【実施例】以下本発明の実施例を図面に基づき説明す
る。図１に示すように、脱着装置１は複数のスペーサー
２と、スペーサー２の一つに連結する伸縮調節部材３
と、前記スペーサー２と伸縮調節部材３にそれぞれ連結
される押圧部材４からなる。押圧部材４には係止具５が
付属するとともに、押圧部材４は必要によりスペーサー
２の端部にも連結して脱着装置１の両端部に一対として
設けてもよい。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the attachment / detachment device 1 includes a plurality of spacers 2 and an expansion / contraction adjusting member 3 connected to one of the spacers 2.
And a pressing member 4 connected to the spacer 2 and the expansion and contraction adjusting member 3, respectively. A stopper 5 may be attached to the pressing member 4, and the pressing member 4 may be connected to the ends of the spacer 2 and provided as a pair at both ends of the attachment / detachment device 1 if necessary.

【００２５】スペーサー２は、図２に示すように、長さ
が可変でなく固定された所定の長さのもので、断面Ｈ形
鋼からなり、両端部に四角形の当板６を溶接等にて連結
し、その当板６の四辺にボルト挿通孔７を穿設して各当
板６を当接させてボルトで連結して所要長さを構成する
ようにしている。したがって、このスペーサー２は長さ
の異なる複数が用意されて、土留壁間の距離に応じて長
さ寸法を選択することものである。As shown in FIG. 2, the spacer 2 has a fixed length which is fixed and is not variable, and is made of H-shaped steel in section, and square contact plates 6 are welded to both ends thereof. The contact plates 6 are connected to each other, and bolt insertion holes 7 are formed on the four sides of the contact plates 6 so that the contact plates 6 come into contact with each other and are connected by bolts to form a required length. Therefore, a plurality of spacers 2 having different lengths are prepared, and the length dimension is selected according to the distance between the soil retaining walls.

【００２６】伸縮調節部材３は、図３に示すように、当
板６と同じ四角形断面の角筒体からなる外筒体８内に油
圧シリンダ９を固定し、その伸縮ロッド１０の先端部に
内筒体１１を連結し、油圧シリンダ９を作動させて伸縮
ロッド１０を伸縮させると内筒体１１が外筒体８の端部
から外側へ進退できるようになっている。外筒体８と内
筒体１１の閉じた端部には当板６と同じ当板６ａが連結
され、これらの当板６，６ａを当接させ、互いに合致し
て穿設した孔にボルトを挿通して締結することにより、
スペーサー２及び押圧部材４と連結できる。この伸縮調
節部材３は、一つの脱着装置１に少なくとも一つあれば
よい。As shown in FIG. 3, the expansion / contraction adjusting member 3 has a hydraulic cylinder 9 fixed in an outer cylindrical body 8 made of a rectangular cylindrical body having the same quadrangular cross section as that of the contact plate 6, and a distal end portion of the elastic rod 10 thereof. When the inner cylinder 11 is connected and the hydraulic cylinder 9 is operated to expand and contract the telescopic rod 10, the inner cylinder 11 can be moved forward and backward from the end of the outer cylinder 8. The same end plate 6a as the contact plate 6 is connected to the closed ends of the outer cylinder body 8 and the inner cylinder body 11. The contact plates 6 and 6a are brought into contact with each other, and bolts are formed in holes that are bored in conformity with each other. By inserting and fastening
It can be connected to the spacer 2 and the pressing member 4. At least one expansion and contraction adjusting member 3 may be provided in one detaching device 1.

【００２７】また、伸縮調節部材３には、内筒体１１の
相対向する両側壁の上下部にそれぞれ長手方向へ所定間
隔にて複数の透孔１２が穿設され、この透孔１２に対応
して透孔１３が外筒体８の相対向する両側壁に穿設され
ている。これらの透孔１２，１３は内外で一致したとき
外筒体８側から内筒体１１にピン１４を貫通させること
によりその伸縮長さを固定できる。Further, in the expansion and contraction adjusting member 3, a plurality of through holes 12 are provided at predetermined intervals in the longitudinal direction in the upper and lower portions of both side walls of the inner cylindrical body 11 which face each other, and correspond to the through holes 12. Through holes 13 are formed in both side walls of the outer cylindrical body 8 which face each other. When the through holes 12 and 13 are aligned inside and outside, the expansion / contraction length can be fixed by penetrating the pin 14 from the outer cylindrical body 8 side to the inner cylindrical body 11.

【００２８】押圧部材４は、図４に示すように、当板６
と同じ四角形断面の角筒体からなる外筒体１５と、この
外筒体１５の内部に収納されて、先端部に蓋体１９を被
冠した油圧ジャッキ１６とからなり、油圧ジャッキ１６
にはバルブ１７，１７ａを介して圧油が供給・排出され
るようにして強力な押圧力を有する。油圧ジャッキ１６
のロッド１６ａの先端部には主突起部１８が形成され、
この主突起部１８は係止具５に穿設した長孔２５から出
没自在である。外筒体１５の基端部には伸縮調節部材３
の当板６ａとボルトで締結するための当板６ｂが連結さ
れている。The pressing member 4, as shown in FIG.
The hydraulic jack 16 includes an outer tubular body 15 formed of a rectangular tubular body having the same quadrangular cross section as described above, and a hydraulic jack 16 housed in the outer tubular body 15 and having a tip end covered with a lid body 19.
Has a strong pressing force as pressure oil is supplied and discharged through the valves 17 and 17a. Hydraulic jack 16
A main protrusion 18 is formed at the tip of the rod 16a of
The main protrusion 18 can be retracted from the elongated hole 25 formed in the locking tool 5. The expansion and contraction adjusting member 3 is provided at the base end of the outer tubular body 15.
The contact plate 6a and the contact plate 6b for fastening with a bolt are connected.

【００２９】前記伸縮調節部材３の油圧シリンダ９と押
圧部材４への圧油を供給・排出するための油圧ユニット
（図示略）が必要であるが、この油圧ユニットは双方を
交互に又は併用させて作動をさせるものであり、動力は
電動による。なお、油圧ユニットそのものは公知のもの
を使用すればたりる。また、押圧部材４へ圧油を供給・
排出する油圧ユニットの油圧回路の途中に荷重標示計
（Ｔｏｎ表示）を設置しておく。この荷重標示計により
押圧部材４に負荷している荷重を瞬時に正確に把握でき
て、具体的状況に即応することができる。更に荷重標示
計をＴｏｎ表示とすることにより荷重の増減の判断が極
めて容易である。A hydraulic unit (not shown) for supplying / discharging the pressure oil to / from the hydraulic cylinder 9 of the expansion / contraction adjusting member 3 and the pressing member 4 is required. These hydraulic units may be used alternately or in combination. It is operated by electric power. The hydraulic unit itself may be a known one. Also, supply pressure oil to the pressing member 4.
Install a load indicator (Ton display) in the middle of the hydraulic circuit of the hydraulic unit to be discharged. With this load indicator, the load applied to the pressing member 4 can be instantly and accurately grasped, and it is possible to immediately respond to a specific situation. Further, by making the load indicator a Ton display, it is extremely easy to judge whether the load is increased or decreased.

【００３０】係止具５は、図５に示すように、断面略逆
Ｌ字型の部材であって、上辺２３を腹起材３５に載置し
てその側面に懸架する部材であって、腹起材３５の側面
幅と略同一寸法を有する下辺２４の中央部に主突起部１
８が出没自在に嵌合して腹起材３５の側面に当接するた
めの長孔２５が穿設され、その長孔２５の左右両側に補
強板２４ａを重ねて複数の孔２６が段状配置で穿設され
ている。この孔２６にボルトを挿通して、係止具５は押
圧部材４及びスペーサー２の端部に締結して脱着装置１
を構成し、したがって、長孔２５から主突起部１８が外
方へ出没自在に進退できる。As shown in FIG. 5, the engaging member 5 is a member having a substantially inverted L-shaped cross section, and is a member for mounting the upper side 23 on the uprising member 35 and suspending it on the side surface thereof. The main protrusion 1 is provided at the center of the lower side 24 having substantially the same size as the side face width of the uprising member 35.
A long hole 25 is formed to allow the 8 to be fitted in and out freely and to abut against the side surface of the uprising member 35. A plurality of holes 26 are arranged stepwise by stacking reinforcing plates 24a on both left and right sides of the long hole 25. Has been drilled in. A bolt is inserted into the hole 26, and the locking tool 5 is fastened to the end portions of the pressing member 4 and the spacer 2 to attach and detach the device 1.
Therefore, the main protrusion 18 can be retracted and retracted outward from the elongated hole 25.

【００３１】なお、主突起部１８が腹起材３５の側面略
中央部に当接することができるように、主突起部１８を
長孔２５に沿って上下させて係止具５と押圧部材４との
連結位置をボルトを挿通すべき孔２６を選択して調整す
る。The main projecting portion 18 is moved up and down along the elongated hole 25 so that the main projecting portion 18 can abut the substantially central portion of the side surface of the uprising member 35. The connection position with and is adjusted by selecting the hole 26 into which the bolt is to be inserted.

【００３２】次に上記脱着装置１の使用に付き説明する
と、切梁材３６の撤去は次の手順で行う。腹起材３
５，３５間の寸法を測定する。本発明にかかる脱着装
置１の長さを測定した腹起材３５，３５間の寸法より多
少短い長さとなるように、スペーサー２の選択や伸縮調
整部材３を使用して調節する。即ち、伸縮調節部材３の
油圧シリンダ９に油圧を供給して伸長させることによ
り、押圧装置の主突起部１８が腹起材３５に接触する程
度に脱着装置１の長さ寸法を土留壁３１間の寸法に合わ
せ、その状態で合致する透孔１２，１３にピン１４を打
込むことにより固定する。脱着装置１をクレーン等で
吊り上げて土留壁３１間の撤去する切梁材３６に隣接し
て降ろし、図１に示すように、腹起材３５の上面に係止
具５の上辺２３を懸架し下辺２４を腹起材３５の側面に
当接して固定する。脱着装置１からクレーン等を外
し、該クレーン等に撤去する切梁材３６を吊り上げ可能
に連結する。その後、油圧ジャッキ１６に油圧を供給
して主突起部１８を伸長作動させ、主突起部１８を透孔
２５から突出させて腹起材を外方へ押し出す。これによ
り、相対向する土留壁３１は互いに土圧に抗してそれぞ
れ外側へ押圧され、土留壁間隔が拡幅する。腹起材料
２７の間隔が拡幅すると、既に設置されている切梁材に
かかる荷重は低減されるから、キリンジャッキ等の伸縮
調節部材を操作して緩め、これにより撤去できればクレ
ーンで吊り上げて土留壁間から取り外す。以後この作業
を切梁材３６毎に繰り返すものである。また、本発明
は、切梁材３６のみだけでなく、相対向する土留壁にそ
れぞれ固定した腹起材３５，３５の両端部に介在させる
腹起材３５ａ，３５ａの撤去にもそのまま使用できるも
のである。Next, the use of the detaching device 1 will be described. The cutting beam 36 is removed according to the following procedure. Uprising material 3
Measure the dimension between 5 and 35. The length of the detaching device 1 according to the present invention is adjusted to a length slightly shorter than the dimension between the measured uprising members 35, 35 by selecting the spacer 2 and using the expansion and contraction adjusting member 3. That is, by supplying hydraulic pressure to the hydraulic cylinder 9 of the expansion and contraction adjusting member 3 to extend it, the length dimension of the detaching device 1 is adjusted so that the main projecting portion 18 of the pressing device contacts the uprising member 35 between the soil retaining walls 31. The pin 14 is fixed to the through holes 12 and 13 which are matched with each other in accordance with the dimensions of the above. The desorption device 1 is hoisted by a crane or the like and is lowered adjacent to the cutting beam member 36 to be removed between the earth retaining walls 31, and the upper side 23 of the locking member 5 is suspended on the upper surface of the uprising member 35 as shown in FIG. The lower side 24 abuts against the side surface of the uprising member 35 and is fixed. A crane or the like is removed from the desorption device 1, and the beam member 36 to be removed is connected to the crane or the like so as to be lifted. After that, the hydraulic pressure is supplied to the hydraulic jack 16 to extend the main projection portion 18, project the main projection portion 18 from the through hole 25, and push the bellows material outward. As a result, the soil retaining walls 31 facing each other are pressed outward against the soil pressure, and the spacing between the soil retaining walls is widened. If the space between the uprising materials 27 is widened, the load applied to the beam material that has already been installed is reduced. Therefore, if it can be removed by operating an expansion and contraction adjusting member such as a giraffe jack, it can be lifted up by a crane and the retaining wall. Remove from between. Thereafter, this work is repeated for each of the beams 36. Further, the present invention can be used not only for the beam members 36, but also for removing the abdomen members 35a, 35a interposed between both ends of the abdomen members 35, 35 fixed to the soil retaining walls facing each other. Is.

【００３３】また、切梁材３６を設置する際は、土留壁
３１が敷設され、それらの間の土が除去されて行くに連
れ、土留壁３１の倒壊を防止するために切梁材を深さ方
向へ所定間隔で介在させるのであるが、その場合、先ず
初めに腹起材３５を土留壁３１に設ける作業を先行させ
る。In addition, when the cut beam members 36 are installed, as the soil retaining walls 31 are laid and the soil between them is removed, the beams are deeply removed in order to prevent the soil retaining walls 31 from collapsing. In this case, the work is provided at predetermined intervals in the vertical direction. In that case, first, the work of providing the uprising material 35 on the soil retaining wall 31 is preceded.

【００３４】腹起材３５が形成されると、伸縮調節部材
３の油圧シリンダ９に油圧を供給して伸長させることに
より、押圧装置の主突起部１８が腹起材３５に接触する
程度に脱着装置１の長さ寸法を土留壁３１間の寸法に合
わせ、その状態で合致する透孔１２，１３にピン１４を
打込むことにより固定する。次に脱着装置１をクレーン
等で吊り上げて土留壁３１間に降ろし、図１に示すよう
に、腹起材３５の上面に係止具５の上辺２３を懸架し下
辺２４を腹起材３５の側面に当接して固定する。When the upholstery material 35 is formed, hydraulic pressure is supplied to the hydraulic cylinder 9 of the expansion and contraction adjusting member 3 to extend it, so that the main protrusion 18 of the pressing device is attached and detached to such an extent that it comes into contact with the upholstery material 35. The length dimension of the device 1 is adjusted to the dimension between the soil retaining walls 31, and the pin 14 is driven into the matching through holes 12 and 13 in that state to fix the device. Next, the desorption device 1 is lifted by a crane or the like and lowered between the retaining walls 31, and as shown in FIG. 1, the upper side 23 of the locking tool 5 is suspended on the upper surface of the uprising member 35 and the lower side 24 is attached to the uprising member 35. Fix it by touching the side surface.

【００３５】その後、油圧ジャッキ１６に油圧を供給し
て主突起部１８を伸長作動させ、主突起部１８は透孔２
５から突出して腹起材を外方へ押し出す。After that, the hydraulic pressure is supplied to the hydraulic jack 16 to extend the main projecting portion 18, so that the main projecting portion 18 passes through the through hole 2.
Push out the uprising material by protruding from 5.

【００３６】これにより、相対向する土留壁３１は互い
に土圧に抗してそれぞれ外側へ押圧され、土留壁間隔が
拡幅するから、その状態で所定長さの切梁材をクレーン
等で吊り上げて土留壁間に降ろし、キリンジャッキ等の
伸縮調節部材を操作して脱着装置の近傍で腹起材３５間
に挟持させて固定する。As a result, the soil retaining walls 31 facing each other are pressed outward against each other against the earth pressure, and the spacing between the soil retaining walls is widened. In this state, the timber material of a predetermined length is lifted by a crane or the like. It is put down between the retaining walls, and an expansion and contraction adjusting member such as a giraffe jack is operated to sandwich and fix it between the uprising members 35 in the vicinity of the attachment / detachment device.

【００３７】切梁材が土留壁間に固定すれば、油圧ジャ
ッキ１６の油圧を抜くことにより、土留壁３１は土圧に
より内側へたわむために、切梁材に土圧がかかり、その
土圧で土留壁間に固定保持される。なお、本発明は切梁
材３６の設置だけでなく、相対向する土留壁にそれぞれ
固定した腹起材３５，３５の両端部に介在させる腹起材
３５ａ，３５ａの設置にもそのまま適用できるものであ
る。When the cut beam is fixed between the retaining walls, the hydraulic pressure of the hydraulic jack 16 causes the retaining wall 31 to bend inward due to the earth pressure. It is fixedly held between the retaining walls. In addition, the present invention can be applied not only to the installation of the cross beam member 36, but also to the installation of the uprising members 35a and 35a interposed between both ends of the uprising members 35 and 35 fixed to the soil retaining walls facing each other. Is.

【００３８】かくして上記脱着装置１を用いる山留支保
工の利点を挙げると、腹起材及び切梁材の設置・撤去作
業が確実に施工でき、しかも、何よりも安全である。そ
してこの脱着装置の設備費用は若干コスト高となるもの
の、設備すれば安全、確実、正確な施工ができ近い将来
を考慮すればむしろ経済的であるといえる。さらに施工
管理は確実視できるので、工程に狂いが生じない。施工
時に材料を損傷することがない。施工設備面で小型化で
き、広井施工場所を必要としない。更に荷重標示計を取
り付けることにより、土圧の現況が解り、また操作は電
動によるため、労力を要さず、安全である。さらに、山
留支保工設置時において単一プレロード工法としても利
用することができ、この場合周辺の地盤の変位を少なく
できる。既に起こった山留崩壊を状況に応じてある程度
修復することができる。腹起材のサイズにより係止具を
セットでき、常に導入力は腹起材の芯を押し、力が安定
している。Thus, the advantage of the mountain retaining method using the detaching device 1 is that the installation and removal work of the uprising material and the cutting beam can be surely performed, and above all, it is safe. And although the equipment cost of this desorption device is slightly higher, it can be said that it is economical if the equipment can be installed safely, surely and accurately, considering the near future. Furthermore, since construction management can be viewed with certainty, there will be no deviation in the process. Does not damage the material during construction. Can be downsized in terms of construction equipment and does not require a Hiroi construction site. Furthermore, by installing a load indicator, the present condition of earth pressure can be understood, and since the operation is electric, it does not require labor and is safe. Further, it can be used as a single preloading method when installing the mountain retaining method, in which case the displacement of the surrounding ground can be reduced. It is possible to repair the existing Yamatoru collapse to some extent depending on the situation. A locking tool can be set according to the size of the upholstery material, and the force of introduction always pushes the core of the upholstery material, and the force is stable.

【００３９】[0039]

【発明の効果】以上説明したこの発明によれば、脱着装
置はその一部に油圧シリンダを有して長さ調節可能なス
ペーサーと、腹起材に圧力を負荷する押圧部材を有して
全体として伸縮調節可能な構成としたから、土留壁間へ
の腹起材及び切梁材の設置作業、及び、土留壁からの腹
起材及び切梁材の取り外し作業のいずれの場合でも安全
で容易に施工できる利点を有する。According to the present invention described above, the detaching device is provided with a hydraulic cylinder in a part thereof and the length of which can be adjusted, and a pressing member for applying a pressure to the uprising member. It is safe and easy for both installation work of uprising material and cutting beam between soil retaining walls and removal work of uprising material and cutting beam from soil retaining wall It has the advantage that it can be installed in

【００４０】また、係止具には長孔を穿設し、その長孔
に押圧部材の主突起部が上下動可能に嵌合して位置調節
ができるようにしたから、主突起部が腹起材の側面中央
部に位置するように芯出し調整できて、作業の効用を最
大限に発揮できる。Further, since a long hole is formed in the engaging member and the main projection of the pressing member is vertically movably fitted into the long hole to adjust the position, the main projection is belly. The centering can be adjusted so that it is located in the center of the side surface of the raised material, maximizing the effectiveness of the work.

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

【図１】本発明の実施例を示す平面図（Ａ）及び側面図
（Ｂ）。FIG. 1 is a plan view (A) and a side view (B) showing an embodiment of the present invention.

【図２】スペーサーの平面図（Ａ）及び正面図（Ｂ）。FIG. 2 is a plan view (A) and a front view (B) of a spacer.

【図３】伸縮調節部材の平面図（Ａ）及び一部断面正面
図（Ｂ）。3A and 3B are a plan view (A) and a partial sectional front view (B) of an expansion and contraction adjusting member.

【図４】押圧部材の断面平面図（Ａ）及び平面図
（Ｂ）。FIG. 4 is a cross-sectional plan view (A) and a plan view (B) of the pressing member.

【図５】係止具の側面図（Ａ）及び断面側面図（Ｂ）。FIG. 5 is a side view (A) and a cross-sectional side view (B) of the locking tool.

【図６】開削穴の平面図。FIG. 6 is a plan view of an excavated hole.

【図７】開削穴の断面側面図。FIG. 7 is a sectional side view of an open-cut hole.

【図８】腹起材と切梁材との関係を示す斜視図。FIG. 8 is a perspective view showing a relationship between an upholstery material and a beam member.

【図９】腹起材と切梁材との関係を示す断面側面図。FIG. 9 is a cross-sectional side view showing the relationship between the uprising member and the cutting beam.

【図１０】腹起材の他の例を示す斜視図。FIG. 10 is a perspective view showing another example of an upholstery material.

【図１１】切梁材に用いたキリンジャッキを示す斜視
図。FIG. 11 is a perspective view showing a giraffe jack used for a beam member.

【符号の説明】[Explanation of symbols]

１…脱着装置 ２…スペーサー ３…伸縮調節部材 ４…押圧部材 ５…係止具 ８，１５…外筒体 ９…油圧シリンダ １０…伸縮ロッド １１，１６…内筒体 １２，１３…透孔 １４…ピン １７，１７ａ…バルブ １８…主突起部 ２３…上辺 ２４…下辺 ２５…長孔 ２６…孔 ３１…土留壁 ３５，３５ａ…腹起材 ３６…切梁材 DESCRIPTION OF SYMBOLS 1 ... Attachment / detachment device 2 ... Spacer 3 ... Expansion / contraction adjusting member 4 ... Pressing member 5 ... Locking tool 8, 15 ... Outer cylinder 9 ... Hydraulic cylinder 10 ... Expansion / contraction rod 11, 16 ... Inner cylinder 12, 13 ... Through hole 14 ... pin 17, 17a ... valve 18 ... main protrusion 23 ... upper side 24 ... lower side 25 ... long hole 26 ... hole 31 ... earth retaining wall 35, 35a ... venting material 36 ... cut beam material

Claims (8)

【特許請求の範囲】[Claims] 【請求項１】 相対向する土留壁にそれぞれ腹起材を固
定し、該腹起材に切梁材又は腹起材の両端部をそれぞれ
当接させて土留壁間の開削空間に介在させることにより
土留壁の倒壊を防止する山留支保工施工方法において、 相対向する土留壁にそれぞれ固定した腹起材の少なくと
も一方に圧接又は離反するために液圧を介し伸縮可能に
形成された押圧部材と、この押圧部材に連結して伸縮動
作可能な伸縮調節部材と、この伸縮調節部材に連結され
た所定長さのスペーサーとからなる脱着装置を用い、該
腹起材間に介在させる切梁材若しくは腹起材の設置又は
撤去施工時に前記脱着装置を伸長操作して相対向する土
留壁にそれぞれ固定した腹起材の間隔を拡幅することを
特徴とする山留支保工脱着方法。1. An abutment material is fixed to opposing earth retaining walls, and both ends of the timber beam or abutment material are brought into contact with the abutment material so as to intervene in an open space between the earth retaining walls. In the construction method of the Yamadome retaining work to prevent the collapse of the earth retaining wall by means of a pressing member that is expandable and contractible via hydraulic pressure in order to press or separate at least one of the uprising members fixed to the opposing earth retaining walls. And a detachment device including an expansion and contraction adjusting member connected to the pressing member and capable of expanding and contracting, and a spacer connected to the expansion and contraction adjusting member and having a predetermined length, the cut beam material being interposed between the uprising members. Alternatively, at the time of installing or removing the upholstery material, the desorption device is extended to widen the intervals of the upholstery material fixed to the opposite soil retaining walls, respectively. 【請求項２】 相対向する土留壁にそれぞれ腹起材を固
定し、該腹起材に切梁材又は腹起材の両端部をそれぞれ
当接させて土留壁間の開削空間に介在させることにより
土留壁の倒壊を防止する山留支保工施工方法において、 相対向する土留壁にそれぞれ固定した腹起材に懸架し該
腹起材の側面に垂下して重なる一端側の係止具と、この
係止具を端部に連結し液圧を介して伸縮することにより
該腹起材に圧接又は離反する押圧部材と、この押圧部材
に連結して伸縮作動可能な伸縮調節部材と、この伸縮調
節部材に連結された所定長さのスペーサーと、このスペ
ーサーの端部に連結して該腹起材に懸架し該腹起材の側
面に垂下して重なる他端側の係止具とからなる脱着装置
を用い、該腹起材間に介在させる切梁材若しくは腹起材
の設置又は撤去施工時に前記脱着装置を伸長操作して相
対向する土留壁にそれぞれ固定した腹起材の間隔を拡幅
することを特徴とする山留支保工脱着方法。2. Fixing the upholstery material to the soil retaining walls facing each other, and abutting both ends of the crossbeam or the uprising material to the upholstery material so as to intervene in the open space between the soil retaining walls. In the Yamadome support construction method for preventing collapse of the retaining wall by means of the retaining member on one end side, which is suspended on the uprising members fixed to the opposing retaining walls and hangs down on the side surface of the uprising member and overlaps, A pressing member that presses or separates from the reentry material by connecting the locking member to an end portion and expanding and contracting via hydraulic pressure, an expansion and contraction adjusting member that is connected to the pressing member and can perform expansion and contraction, and the expansion and contraction. It comprises a spacer of a predetermined length connected to the adjusting member, and a locking member on the other end side that is connected to the end portion of the spacer and is suspended on the uprising material and hangs down from the side surface of the uprising material to overlap. Installation or removal of cutting beams or upholstery materials to be interposed between the upholstery materials using a desorption device. YamaTome shoring desorption method characterized by widening the at intervals of the respective desorber the extended operation to opposing earth retaining walls to secure the wale material. 【請求項３】 係止具は相対向する土留壁にそれぞれ固
定した腹起材の上面に懸架する上辺部と該腹起材の側面
に重なる下辺とを有する略逆Ｌ字型体からなり、下辺の
中央部に前記押圧部材の端面中央に突設した主突起部が
嵌合する長孔が上下方向に穿設され、該長孔に主突起部
を嵌合した後上下動調節して押圧部材及びスペーサーに
固定することにより、相対向する土留壁にそれぞれ固定
した腹起材の側面中央部に当接させる位置決めができる
ことを特徴とする請求項２記載の山留支保工脱着方法。3. The locking member is formed of a substantially inverted L-shaped body having an upper side portion suspended on the upper surface of the upholstery material fixed to the soil retaining walls facing each other and a lower side overlapping with the side surface of the uprising material, A long hole into which a main projection protruding from the center of the end surface of the pressing member fits is formed in the center of the lower side in the up-down direction, and the main projection is fitted into the long hole and then vertically adjusted for pressing. The method of attaching and detaching a mountain retaining bar according to claim 2, wherein the members are fixed to the spacer and the spacers can be positioned so as to abut against the center portions of the side faces of the uprising members fixed to the soil retaining walls facing each other. 【請求項４】 相対向する土留壁にそれぞれ固定した腹
起材の少なくとも一方に圧接又は離反するために液圧を
介し伸縮可能に形成された押圧部材と、この押圧部材に
連結して伸縮動作可能な伸縮調節部材と、この伸縮調節
部材に連結された所定長さのスペーサーとからなること
を特徴とする山留支保工脱着装置。4. A pressing member formed to be expandable and contractible via hydraulic pressure so as to be pressed against or separated from at least one of the uprising members fixed to the soil retaining walls facing each other, and an expanding / contracting operation connected to the pressing member. An apparatus for detaching and supporting a mountain retaining rod, comprising a possible expansion / contraction adjusting member and a spacer of a predetermined length connected to the expansion / contraction adjusting member. 【請求項５】 相対向する土留壁にそれぞれ固定した腹
起材に懸架し該腹起材の側面に垂下して重なる一端側の
係止具と、この係止具を端部に連結し液圧を介して伸縮
することにより該腹起材に圧接又は離反する押圧部材
と、この押圧部材に連結して伸縮作動可能な伸縮調節部
材と、この伸縮調節部材に連結された所定長さのスペー
サーと、このスペーサーの端部に連結して該腹起材に懸
架し該腹起材の側面に垂下して重なる他端側の係止具と
からなることを特徴とする山留支保工脱着装置。5. A locking tool on one end side, which is suspended on the upholstery materials respectively fixed to the soil retaining walls facing each other and hangs down from the side surface of the uprising material, and overlaps, and this locking tool is connected to the end portion of the liquid. A pressing member that presses against or separates from the uprising member by expanding and contracting through pressure, an expansion and contraction adjusting member that is connected to the pressing member and can expand and contract, and a spacer of a predetermined length connected to the expansion and contraction adjusting member. And a retaining member on the other end side that is connected to the end of the spacer and is suspended on the uprising material and hangs down on the side surface of the uprising material and overlaps. . 【請求項６】 係止具は相対向する土留壁にそれぞれ固
定した腹起材の上面に懸架する上辺部と該腹起材の側面
に重なる下辺とを有する略逆Ｌ字型体からなり、下辺の
中央部に前記押圧部材の端面中央に突設した主突起部が
嵌合する長孔が上下方向に穿設されている請求項５記載
の山留支保工脱着装置。6. The locking member is formed of a substantially inverted L-shaped body having an upper side portion suspended on the upper surface of the upholstery material fixed to the soil retaining walls facing each other and a lower side overlapping with the side surface of the uprising material, The mountain retaining device attachment / detachment device according to claim 5, wherein an elongated hole into which a main protrusion protruding from the center of the end face of the pressing member is fitted is formed in the central portion of the lower side in the vertical direction. 【請求項７】 押圧部材は外筒体と内筒体とからなり、
かつ、外筒体と内筒体間に圧油を注入し又は排出するた
めのバルブを有する請求項４，５又は６記載の山留支保
工脱着装置。7. The pressing member comprises an outer cylinder and an inner cylinder,
7. The mountain retaining support attachment / detachment device according to claim 4, 5 or 6, further comprising a valve for injecting or discharging pressure oil between the outer cylinder body and the inner cylinder body. 【請求項８】 伸縮調節部材は外筒体と内筒体を油圧シ
リンダで伸縮可能に連結してなり、かつ、内筒体の長手
方向へ所定間隔で複数の透孔が穿設され、この透孔と合
致してピンを挿通する透孔が外筒体に穿設されてなる請
求項４，５，６又は７記載の山留支保工脱着装置。8. The expansion / contraction adjusting member is formed by connecting an outer cylinder and an inner cylinder so as to be expandable / contractible by a hydraulic cylinder, and has a plurality of through holes formed at predetermined intervals in the longitudinal direction of the inner cylinder. 8. The mountain retaining support attachment / detachment device according to claim 4, 5, 6 or 7, wherein a through hole that matches the through hole and allows the pin to be inserted therein is formed in the outer cylindrical body.