JP6259705B2 - Assembling structure and assembly method of tunnel curing sheet frame - Google Patents
Assembling structure and assembly method of tunnel curing sheet frame Download PDFInfo
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- JP6259705B2 JP6259705B2 JP2014083640A JP2014083640A JP6259705B2 JP 6259705 B2 JP6259705 B2 JP 6259705B2 JP 2014083640 A JP2014083640 A JP 2014083640A JP 2014083640 A JP2014083640 A JP 2014083640A JP 6259705 B2 JP6259705 B2 JP 6259705B2
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Description
本発明はトンネルの養生シートの枠体を組み立てるための構造と、その組立方法に関するものである。 The present invention relates to a structure for assembling a frame of a curing sheet for a tunnel and an assembling method thereof.
打ち終わったコンクリートは、その水和反応により十分に強度を発現し、所要の耐久性、水密性、鋼材を保護する性能等の品質を確保し、有害なひび割れを生じないようにするために、打込み後一定期間は、コンクリートを適当な温度のもとで、十分湿潤状態に保ち、且つ有害な作用の影響を受けないようにすることが必要であり、そのための作業をコンクリートの養生という。
コンクリートは、打ち込み後ごく早い時期に表面が乾燥して内部の水分が失われると、セメントの水和反応が十分に行われず、また、特に表面だけが急激に乾燥すると、ひび割れの発生の原因となるからである。
トンネルのコンクリートにおいても、それを湿潤状態に保ち、温度を制御する養生を行う必要がある。
そのための養生装置の一例を図７に示すと、養生シートを周囲に取り付けたフレームａを、トンネル軸方向に移動可能に配置し、打設直後のコンクリートｂの表面に一定の間隔ｃを保持して養生シートｄを位置させ、その間隔ｃに温風や加熱した水蒸気を供給する方法が知られている。
In order to ensure that the finished concrete has sufficient strength due to its hydration reaction, ensuring the required durability, watertightness, performance to protect steel, etc., and not causing harmful cracks, For a certain period of time after placing, it is necessary to keep the concrete sufficiently moistened under an appropriate temperature and not to be affected by harmful effects, and the work for this is called concrete curing.
If the surface of concrete is dried and the internal moisture is lost very early after placing, the hydration reaction of the cement will not be carried out sufficiently, especially if only the surface is dried rapidly. Because it becomes.
Also in tunnel concrete, it is necessary to perform curing to keep it wet and to control the temperature.
An example of a curing device for this purpose is shown in FIG. 7. A frame a having a curing sheet attached around is arranged so as to be movable in the tunnel axis direction, and a certain distance c is maintained on the surface of the concrete b immediately after placing. There is known a method in which the curing sheet d is positioned and hot air or heated water vapor is supplied to the interval c.
前記した従来のトンネルの養生シートの枠体の組み立て構造や組立方法にあっては、次のような問題点がある。
＜１＞ 養生シートを支持する枠体をトンネル内の狭い空間で迅速に組み立てる必要がある。
＜２＞ そのために従来は支持枠をトンネル内でクレーンで吊り上げ、支持枠の両側の脚のボルト穴と支持台のボルト穴の位置合わせを行い、ボルトを貫通して締め付けて固定する方法を採用している。
＜３＞ しかし支持枠の外面とトンネルに打設したコンクリートの内面との間隔が３０ｃｍ程度しかなく、支持枠の両脚を支持台に固定する作業は狭いトンネル内の空間なので容易ではなく、危険でもあった。
The above-described conventional structure and method for assembling the frame of the curing sheet for tunnels have the following problems.
<1> It is necessary to quickly assemble the frame that supports the curing sheet in a narrow space in the tunnel.
<2> For that purpose, the conventional method is to lift the support frame with a crane in the tunnel, align the bolt holes on the legs on both sides of the support frame with the bolt holes on the support base, and tighten and fix the bolts. doing.
<3> However, the distance between the outer surface of the support frame and the inner surface of the concrete placed in the tunnel is only about 30 cm, and the work of fixing both the legs of the support frame to the support base is not easy because it is a space in a narrow tunnel. there were.
上記のような課題を解決する本発明のトンネルの養生シートの枠体の組み立て構造は、養生シートを支持するほぼアーチ状の支持枠と、支持枠の脚を支持する支持台とによって構成し、支持台はトンネルの両側に配置する部材であり、すでにアーチ状に組み立てた支持枠は、支持台に対して起倒自在にヒンジで取り付けて構成し、支持枠を引き起こして起立させたときには、支持枠と支持台はボルトで締結が可能であることを特徴とするものである。
また本発明の組み立て構造は、上記の組み立て構造において、支持台が長尺部材であり、トンネルの軸方向に配置するレールの上を走行可能に構成したことを特徴とするものである。
また本発明の養生シートの組み立て方法は、上記の組み立て装置を使用して、トンネル軸方向の両側に支持台を配置し、地表面で組み立ててアーチを構成した支持枠の両側の脚を、支持台に対して起倒自在にヒンジで取り付け、この支持枠を所定の位置で引き起こして、トンネルコンクリートの内面と一定の間隔を隔てて起立させ、支持枠と支持台をボルトで締結することを特徴とするものである。
また本発明の組み立て方法は、上記の方法において、トンネルの両側にトンネルの軸方向と平行にレールを配置し、そのレールの上に支持台を走行可能に搭載したことを特徴とするものである。
The structure for assembling the frame of the curing sheet of the tunnel of the present invention that solves the above-described problem is constituted by a substantially arch-shaped support frame that supports the curing sheet, and a support base that supports the legs of the support frame, The support base is a member arranged on both sides of the tunnel, and the support frame that has already been assembled in the shape of an arch is supported by a hinge that can be tilted up and down with respect to the support base. The frame and the support base can be fastened with bolts.
The assembly structure of the present invention is characterized in that, in the above-described assembly structure, the support base is a long member and is configured to be able to run on rails arranged in the axial direction of the tunnel.
The curing sheet assembling method of the present invention also supports the legs on both sides of the support frame, which is assembled on the ground surface and arches by using the above-described assembling apparatus, placing support stands on both sides in the tunnel axial direction. It is attached to the base with a hinge so that it can be tilted up and down, and this support frame is raised at a predetermined position to stand up with a certain distance from the inner surface of the tunnel concrete, and the support frame and the support base are fastened with bolts. It is what.
The assembly method of the present invention is characterized in that, in the above method, rails are arranged on both sides of the tunnel in parallel with the axial direction of the tunnel, and a support base is mounted on the rail so as to be able to travel. .
本発明のトンネルの養生シートの枠体の組み立て構造と組立方法は以上説明したように、地表面で組み立ててアーチを構成した支持枠の両側の脚を、支持台に対して起倒自在にヒンジで取り付け、この支持枠を所定の位置で引き起こして、トンネルコンクリートの内面と一定の間隔を隔てて起立させるものである。
そのために、狭いトンネル内でも支持枠を引き起こしてボルト締結するだけで組立が完了するから作業が容易であり安全である。
また、前記したように従来は照明が不完全で作業範囲が制限されるトンネル内で支持枠と支持台の固定を行っていた。
しかし本発明では支持枠と支持台はすでにヒンジ構造で連結してあって、両者の位置関係が制約されているので、ボルト穴は必ず一致するから、締結の作業がきわめて簡単であり効率よく安全に作業を進めることができる。
As described above, the structure and method of assembling the frame for the curing sheet of the tunnel of the present invention are hinged so that the legs on both sides of the support frame assembled on the ground surface and configured as an arch can be tilted up and down with respect to the support base. In this case, the support frame is raised at a predetermined position to stand up with a certain distance from the inner surface of the tunnel concrete.
Therefore, even in a narrow tunnel, the assembly is completed simply by raising the support frame and tightening the bolts, so that the work is easy and safe.
In addition, as described above, conventionally, the support frame and the support base are fixed in the tunnel in which the illumination is incomplete and the work range is limited.
However, in the present invention, since the support frame and the support base are already connected by a hinge structure, and the positional relationship between the two is restricted, the bolt holes always match, so the fastening operation is extremely simple and efficient and safe. You can proceed to work.
以下図面を参照にしながら本発明のトンネルの養生シートの枠体の組み立て構造と組立方法の好適な実施の形態を詳細に説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an assembly structure and an assembling method of a frame for a curing sheet of a tunnel according to the present invention will be described below in detail with reference to the drawings.
＜１＞前提条件。
本発明は、コンクリートを打設した直後に、支持枠１をトンネル内で組み立てて、その支持枠１の周囲に養生シートを取り付けてコンクリートを養生するための装置、方法である。
<1> Precondition.
The present invention is an apparatus and a method for curing a concrete by assembling a support frame 1 in a tunnel and attaching a curing sheet around the support frame 1 immediately after placing concrete.
＜２＞基本的構成。
本発明は、養生シートを支持するアーチ状の支持枠１と、その支持枠１の両端の脚を支持する支持台２とによって構成する。
<2> Basic configuration.
The present invention includes an arch-like support frame 1 that supports a curing sheet and a support base 2 that supports legs at both ends of the support frame 1.
＜３＞支持台。
支持台２はトンネルの両側に配置する部材であり、この支持台２がアーチ状の支持枠１の両端を支持する。
支持台２は図の実施例のような長尺部材に限らず、単なるブロックであっても転倒しない支持力があれば採用することができる。
支持台２はその下面に車輪２１を設けて、トンネルの軸方向に配置するレール２２の上を走行可能に構成すると、移動が容易であって作業が効率化する。
<3> A support base.
The support base 2 is a member disposed on both sides of the tunnel, and the support base 2 supports both ends of the arch-shaped support frame 1.
The support base 2 is not limited to a long member as in the embodiment shown in the figure, and can be employed as long as it has a support force that does not fall even if it is a simple block.
If the support base 2 is provided with
＜４＞支持枠。
支持枠１は打設した直後のトンネルのコンクリートと一定の間隔を隔てて設置する枠体である。
この支持枠１の外側に養生シートを取り付け、コンクリート面と養生シートの間の間隔に温風や加熱した水蒸気を供給して養生を行う。
養生シートの両端は円弧状のバルーンで閉塞するが、そのような構成は広く採用されているから説明を省略する。
<4> Support frame.
The support frame 1 is a frame that is installed at a certain interval from the concrete of the tunnel immediately after placement.
A curing sheet is attached to the outside of the support frame 1, and curing is performed by supplying warm air or heated steam to the space between the concrete surface and the curing sheet.
Both ends of the curing sheet are closed with arc-shaped balloons, but since such a configuration is widely adopted, description thereof is omitted.
＜５＞両者の取り付け。（図１）
アーチ状の支持枠１の両端は、支持台２に対して起倒自在にヒンジ３で取り付ける。
そのために支持枠１の端部と、支持台２とは、トンネル軸方向を横断する方向の水平のピン３１で軸止めして取り付ける。
支持枠１の端部と、支持台２の表面にはおのおのボルト穴１１、２３を開口しておき、鉛直に起立させた支持枠１の端部と支持台２とを、鉛直方向のボルトで締結できるように構成する。
この両者のボルト穴１１、２３の位置は、ピン３１を中心に描いた円弧の上に位置している。
<5> Attachment of both. (Figure 1)
Both ends of the arch-shaped support frame 1 are attached to the support base 2 with hinges 3 so that they can be tilted up and down.
For this purpose, the end portion of the support frame 1 and the support base 2 are attached by being fixed with a horizontal pin 31 in a direction crossing the tunnel axis direction.
The positions of these
＜６＞組立方法。
次に本発明の養生シート支持枠の組み立て方法について説明する。
<6> Assembly method.
Next, a method for assembling the curing sheet support frame of the present invention will be described.
＜７＞支持枠の組み立て。（図３，４）
まず地表面に寝かした状態で支持枠１を組み立てる。
地表に寝かした状態であるから、作業は容易であって、安全である。
アーチ状に組み立てた支持枠１の両端は、トンネルの両側に配置した支持台２に取り付ける。
その場合に、地表面で組み立てた支持枠１の両側の脚は、支持台２に対して起倒自在に、トンネル横断方向のピン３１を貫通させてヒンジ構造３で取り付けることは前記した通りである。
<7> Assembling the support frame. (Figs. 3 and 4)
First, the support frame 1 is assembled while lying on the ground surface.
The work is easy and safe because it is laid on the ground surface.
Both ends of the support frame 1 assembled in an arch shape are attached to support bases 2 arranged on both sides of the tunnel.
In this case, the legs on both sides of the support frame 1 assembled on the ground surface can be tilted up and down with respect to the support base 2 so as to pass through the pin 31 in the tunnel transverse direction and be attached with the hinge structure 3 as described above. is there.
＜８＞支持枠の引き起こし。（図５）
この支持枠１を、現場の必要とする所定の位置で引き起こす。
引き起こしは、例えばトンネル内で使用している高所作業車の作業床４を利用する。
この作業床４に作業員を配置し、支持枠１の最頂部にワイヤを取り付け、作業員がワイヤを引き上げることで容易に引き起こすことができる。
地上の作業員が身長程度まで支持枠１を引き起こせば、引き起こしの初期の負担を軽減することができる。
上部からの引き起こしが始まったら地上の作業員は支持枠１の外部に退避して安全を期す。
引き起こして支持枠１がほぼ鉛直になったら、単管などを斜めに取り付けて転倒の防止を行う。
<8> Raising the support frame. (Fig. 5)
The support frame 1 is raised at a predetermined position required in the field.
For the cause, for example, the work floor 4 of an aerial work vehicle used in a tunnel is used.
This can be easily caused by placing an operator on the work floor 4, attaching a wire to the top of the support frame 1, and pulling the wire up by the operator.
If the worker on the ground raises the support frame 1 to the height, the initial burden of the cause can be reduced.
When raising from the top starts, the workers on the ground retreat outside the support frame 1 to ensure safety.
When the support frame 1 is almost vertical after being raised, a single pipe or the like is attached obliquely to prevent the fall.
＜９＞両者の締結。（図２）
支持枠１の端部のボルト穴１１と、支持台２のボルト穴２３の位置は、ヒンジ３のピン３１を中心に描いた円弧の上に位置している。
したがって支持枠１を鉛直に立てた場合には、両ボルト穴１１、２３は正確に一致することになる。
そこで作業員が鉛直方向のボルトを挿入してナットで締結し、支持枠１と支持台２を強固に一体化する。
このように両者のボルト穴は常に正確に一致するから、照明が不十分で作業範囲の制約されたトンネル内の作業でも円滑、迅速に支持枠１と支持台２の一体化を行うことができる。
<9> Conclusion of both. (Figure 2)
The positions of the bolt holes 11 at the end of the support frame 1 and the bolt holes 23 of the support base 2 are located on an arc drawn around the pin 31 of the hinge 3.
Therefore, when the support frame 1 is erected vertically, the bolt holes 11 and 23 are exactly aligned.
Therefore, an operator inserts a bolt in the vertical direction and fastens it with a nut, so that the support frame 1 and the support base 2 are firmly integrated.
In this way, the bolt holes of the two always coincide with each other accurately, so that the support frame 1 and the support base 2 can be integrated smoothly and quickly even in the tunnel where the illumination is insufficient and the work range is restricted. .
＜１０＞支持枠間の連結。（図６）
上記のような方法で、トンネル内に複数の支持枠１を鉛直に、かつ平行に設置する。
そして前後の支持枠１を、トンネル軸方向と平行な建枠５で連結することで多数の支持枠１を一体化することができる。
その後、支持枠１の外側に養生シートを取り付けたり、端部にバルーンを取り付ける、といった作業は従来と同様である。
<10> Connection between support frames. (Fig. 6)
The plurality of support frames 1 are installed vertically and in parallel in the tunnel by the method as described above.
A large number of support frames 1 can be integrated by connecting the front and rear support frames 1 with a building frame 5 parallel to the tunnel axis direction.
Thereafter, operations such as attaching a curing sheet to the outside of the support frame 1 and attaching a balloon to the end are the same as in the prior art.
１：支持枠
２：支持台
３：ヒンジ
３１：ピン
1: Support frame 2: Support base 3: Hinge 31: Pin
Claims (4)
支持台はトンネルの両側に配置する部材であり、
すでにアーチ状に組み立てた支持枠は、支持台に対して起倒自在にヒンジで取り付けて構成し、
支持枠を引き起こして起立させたときには、支持枠と支持台はボルトで締結が可能であることを特徴とする、
トンネルの養生シートの枠体の組み立て構造。 It is composed of a substantially arch-shaped support frame that supports the curing sheet, and a support base that supports the legs of the support frame,
The support base is a member placed on both sides of the tunnel,
The support frame that has already been assembled in the shape of an arch is configured with a hinge that can be tilted up and down with respect to the support base.
When the support frame is raised and raised, the support frame and the support base can be fastened with bolts,
The assembly structure of the tunnel curing sheet frame.
支持台が長尺部材であり、トンネルの軸方向に配置するレールの上を走行可能に構成したことを特徴とする、
トンネルの養生シートの枠体の組み立て構造。 The assembly structure according to claim 1,
The support base is a long member, and is configured to be able to run on rails arranged in the axial direction of the tunnel,
The assembly structure of the tunnel curing sheet frame.
トンネルの両側に支持台を配置し、
地表面で組み立ててアーチを構成した支持枠の両側の脚を、
支持台に対して起倒自在にヒンジで取り付け、
この支持枠を所定の位置で引き起こして、
トンネルコンクリートの内面と一定の間隔を隔てて起立させ、
支持枠と支持台をボルトで締結することを特徴とする、
養生シートの組み立て方法。 Using the assembly device according to claim 1,
Place support stands on both sides of the tunnel,
Legs on both sides of the support frame assembled on the ground surface to form an arch,
Attach it to the support base with a hinge,
Raise this support frame in place,
Stand up with a certain distance from the inner surface of the tunnel concrete,
The support frame and the support base are fastened with bolts,
Assembling method of curing sheet.
トンネルの両側にトンネルの軸方向と平行にレールを配置し、
そのレールの上に支持台を走行可能に搭載したことを特徴とする、
養生シートの組み立て方法。 The assembly method according to claim 3, wherein
Place rails on both sides of the tunnel parallel to the axial direction of the tunnel,
It is characterized by mounting a support base on the rail so that it can run,
Assembling method of curing sheet.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2014083640A JP6259705B2 (en) | 2014-04-15 | 2014-04-15 | Assembling structure and assembly method of tunnel curing sheet frame |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014083640A JP6259705B2 (en) | 2014-04-15 | 2014-04-15 | Assembling structure and assembly method of tunnel curing sheet frame |
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| JP2015203250A JP2015203250A (en) | 2015-11-16 |
| JP6259705B2 true JP6259705B2 (en) | 2018-01-10 |
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