JP4014305B2 - Submarine tunnel extrusion equipment - Google Patents

Submarine tunnel extrusion equipment Download PDF

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Publication number
JP4014305B2
JP4014305B2 JP22199698A JP22199698A JP4014305B2 JP 4014305 B2 JP4014305 B2 JP 4014305B2 JP 22199698 A JP22199698 A JP 22199698A JP 22199698 A JP22199698 A JP 22199698A JP 4014305 B2 JP4014305 B2 JP 4014305B2
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JP
Japan
Prior art keywords
extrusion
jack
reaction force
tunnel
braking
Prior art date
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Expired - Fee Related
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JP22199698A
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Japanese (ja)
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JP2000054410A (en
Inventor
久 三浦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Corp
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Taisei Corp
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Priority to JP22199698A priority Critical patent/JP4014305B2/en
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Description

【０００１】
【発明の属する技術分野】
本発明は水底トンネルの押出装置に関するものである。
【０００２】
【従来の技術】
水底トンネルの構築方法の一つに押出工法がある。この工法は、製作ヤ−ドでドライな状態で製作した函体を連結しながら、滑り支承上を順次押出して行き、水路等の対岸へ到達させ水底トンネルを完成する工法である。
【０００３】
【発明が解決しようとする課題】
円弧状等の水底トンネルを上記の押出工法で構築する場合、下方に傾斜する斜路を押出す必要がある。このとき、水底トンネルが逸走しないように制動力を付与し、水底トンネルの押出制御を行う必要がある。
【０００４】
そこで従来は、ウインチを用いたブレ−キングにより水底トンネルに制動力を付与していた。しかし、水底トンネルの押出荷重が大きくなると制御が困難となり、正確な水底トンネルの据付作業ができないおそれがあった。
【０００５】
【発明の目的】
本発明は、上記のような問題点を解決するためになされたもので、任意の押出力と制動力を水底トンネルに付与でき、確実な押出制御を行うことができる、水底トンネルの押出装置を提供することを目的とする。
【０００６】
【課題を解決するための手段】
上記課題を解決するための手段として、本発明は、水底トンネルを押出すための装置において、水底トンネルにセンターホール型の押出ジャッキと制動ジャッキを取り付け、
水底トンネルの押出方向に間隔をおいて、前方に押出反力受部材を、後方に制動反力受部材を設け、これらの反力受部材間に張設した鋼線を前記の押出ジャッキ及び制動ジャッキに貫通させ、押出反力受部材に反力をとって前記押出ジャッキにより水底トンネルを押出すと同時に、制動反力受部材に反力をとって前記制動ジャッキにより水底トンネルに制動力を付与するよう構成したことを特徴とする、水底トンネルの押出装置を提供する。以下、図を参照しながら本発明の実施の形態について説明する。
【０００８】
【発明の実施の形態】
＜イ＞押出装置の構造
本発明の押出装置は以下の部材より構成される。
【０００９】
（１）押出反力受部材
水底トンネル１は、製作ヤ−ドでドライな状態で製作した函体を連結して構築され、水路等の対岸まで、順次滑り支承上を押出される。
【００１０】
この場合水底トンネル１の水底の押出ラインは、図１〜３に示すように、両側に鋼管矢板１１を打設し、その間を掘削して設けた溝１２内に沿って押出される。
【００１１】
押出反力受部材は、例えば、上記鋼管矢板１１間に、水底トンネル１の押出方向と直交する方向に架設した押出反力受梁２などを採用する。この押出反力受梁２は、鋼製梁やプレストレスを導入したコンクリ−ト梁などで構成する。
【００１２】
（２）制動反力受部材
水底トンネル１の押出方向に間隔をおいて、上記押出反力受部材の後方に、制動反力受部材を設ける。
【００１３】
この制動力反力受部材も、押出反力受部材と同様に、例えば、鋼管矢板１１間に、水底トンネル１の押出方向と直交する方向に架設した、鋼製梁やプレストレスを導入したコンクリ−ト梁などよりなる制動反力受梁２１などを採用する。
【００１４】
（３）鋼線
押出反力受梁２と制動反力受梁２１の間に、水底トンネル１の押出方向に沿って、所要本数の鋼線３を張設する。この鋼線３は、水底トンネル１を押出す十分な反力を得られるだけの強度及び本数に設定する。
【００１５】
鋼線３の一端はアンカ−ヘッド３１で固定し、他端には張力を調整するための調整ジャッキ３２を配備する。
【００１６】
（４）押出ジャッキ
押出ジャッキ４には、図４に示すように、鋼線３を貫通させて、把持開放可能なセンタ−ホ−ル型のジャッキを用いる。
【００１７】
この押出ジャッキ４は、水底トンネル１の天版１３に設けた凹部に移動架台１４を設置し、この移動架台１４に一端側を固定することによって設置する。そして、移動架台１４ともども押出ジャッキ４に鋼線３を貫通させる。
【００１８】
（５）制動ジャッキ
制動ジャッキ５は、押出ジャッキ４と同様なセンタ−ホ−ル型のジャッキを用い、移動架台１４の押出ジャッキ４の反対側に装備し、鋼線３を貫通させる。
【００１９】
押出ジャッキ４及び制動ジャッキ５の能力は、押出当初の水底トンネル１と水底面との静止摩擦の縁切りと、その後に発生する逸走を防止することが要求されるため、荷重コントロ−ルが容易なものを使用する。
【００２０】
＜ロ＞押出装置の作動
次に、上記のように構成した装置を用いた水底トンネル１の押出方法について、図４〜７を参照して説明する。
【００２１】
水底トンネル１の押出は、押出ジャッキ４のクサビにより鋼線３を把持開放し、伸縮を繰り返すことによって、鋼線３を手繰るように押出反力受梁２に反力をとり、移動架台１４を移動させて水底トンネル１を押出す。
【００２２】
そして、押出ジャッキ４が押出反力受梁２に接近したら、制動反力受梁２１側に盛り替えて上記動作を繰り返す。
【００２３】
上記のように押出ジャッキ４により水底トンネル１を押出すと同時に、制動反力受梁２１に反力をとって制動ジャッキ５により水底トンネル１に制動力を付与する。
【００２４】
すなわち、制動ジャッキ５で鋼線３を把持した状態で、油圧を減圧弁を介して徐々に抜き、移動架台１４を介して水底トンネル１に制動力を与える。これによって、任意の押出力と制動力を水底トンネル１に付与でき、確実な押出制御を行うことができるため、水底トンネル１の押出荷重が大きくなっても容易に制御が行える。
【００２５】
以上のように本発明の装置は、一連の押出動作を任意荷重でコントロ−ルできるので、押出開始当初の小さい荷重から最終の大容量荷重まで対応可能な能力に限界のない装置である。
【００２６】
【発明の効果】
本発明は以上説明したように、任意の押出力と制動力を水底トンネルに付与でき、確実な押出制御を行うことができる。そのため、水底トンネルの押出荷重が大きくなっても制御が容易であり、正確な水底トンネルの据付作業が可能となる。
【図面の簡単な説明】
【図１】 本発明の押出装置の平面図
【図２】 本発明の押出装置の側面図
【図３】 本発明の押出装置の正面図
【図４】 本発明の押出装置のセンタホ−ルジャッキの動作の説明図
【図５】 本発明の押出装置のセンタホ−ルジャッキの動作の説明図
【図６】 本発明の押出装置のセンタホ−ルジャッキの動作の説明図
【図７】 本発明の押出装置のセンタホ−ルジャッキの動作の説明図[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an extrusion apparatus for a bottom tunnel.
[0002]
[Prior art]
One of the methods for constructing a submarine tunnel is the extrusion method. This construction method is a construction method in which a box produced in a dry state with a production Yard is connected and a sliding bearing is sequentially pushed out to reach the opposite shore such as a waterway to complete a bottom tunnel.
[0003]
[Problems to be solved by the invention]
When a submarine tunnel having an arc shape or the like is constructed by the above-described extrusion method, it is necessary to extrude a slope inclined downward. At this time, it is necessary to apply a braking force so that the bottom tunnel does not escape and to control the extrusion of the bottom tunnel.
[0004]
Therefore, conventionally, braking force has been applied to the bottom tunnel by breaking using a winch. However, if the extrusion load of the bottom tunnel becomes large, it becomes difficult to control, and there is a risk that accurate installation of the bottom tunnel cannot be performed.
[0005]
OBJECT OF THE INVENTION
The present invention has been made to solve the above-described problems, and provides a bottom tunnel extrusion device that can apply arbitrary pushing force and braking force to the bottom tunnel and perform reliable extrusion control. The purpose is to provide.
[0006]
[Means for Solving the Problems]
As means for solving the above-mentioned problems, the present invention is an apparatus for extruding a bottom tunnel, wherein a center hole type extrusion jack and a braking jack are attached to the bottom tunnel,
An extrusion reaction force receiving member is provided at the front, a braking reaction force receiving member is provided at the front, and a steel wire stretched between these reaction force receiving members is disposed between the extrusion jack and the brake. The reaction force is applied to the extrusion reaction force receiving member through the jack and the bottom tunnel is pushed out by the extrusion jack. At the same time, the reaction force is applied to the braking reaction force receiving member and the braking force is applied to the bottom tunnel by the braking jack. An apparatus for extruding an underwater tunnel is provided. Embodiments of the present invention will be described below with reference to the drawings.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
<A> Structure of extrusion device The extrusion device of the present invention comprises the following members.
[0009]
(1) Extrusion reaction force receiving member The submarine tunnel 1 is constructed by connecting boxes manufactured in a dry state with a manufacturing yarn, and is sequentially pushed out on a sliding bearing to the opposite bank such as a water channel.
[0010]
In this case, as shown in FIGS. 1 to 3, the extrusion line for the bottom of the bottom tunnel 1 is extruded along a groove 12 formed by piercing steel pipe sheet piles 11 on both sides and excavating between them.
[0011]
As the extrusion reaction force receiving member, for example, an extrusion reaction force receiving beam 2 installed between the steel pipe sheet piles 11 in a direction orthogonal to the extrusion direction of the water bottom tunnel 1 is adopted. The extrusion reaction force receiving beam 2 is made of a steel beam, a concrete beam into which prestress is introduced, or the like.
[0012]
(2) Brake reaction force receiving member A brake reaction force receiving member is provided behind the extrusion reaction force receiving member at an interval in the extrusion direction of the bottom tunnel 1.
[0013]
As with the extrusion reaction force receiving member, this braking force reaction force receiving member is, for example, a steel beam or pre-stressed concrete installed between the steel pipe sheet piles 11 in a direction orthogonal to the extrusion direction of the bottom tunnel 1. -A braking reaction force receiving beam 21 made of a toe beam or the like is employed.
[0014]
(3) A required number of steel wires 3 are stretched between the steel wire pushing reaction force receiving beam 2 and the braking reaction force receiving beam 21 along the pushing direction of the bottom tunnel 1. The steel wire 3 is set to have a strength and a number sufficient to obtain a sufficient reaction force to push the bottom tunnel 1.
[0015]
One end of the steel wire 3 is fixed by an anchor head 31, and an adjustment jack 32 for adjusting the tension is provided at the other end.
[0016]
(4) Extruded Jack As shown in FIG. 4, the extruded jack 4 uses a center-hole type jack that allows the steel wire 3 to pass therethrough and can be held and released.
[0017]
The extrusion jack 4 is installed by installing a moving base 14 in a recess provided in the top plate 13 of the underwater tunnel 1 and fixing one end side to the moving base 14. Then, the steel wire 3 is passed through the extruded jack 4 together with the movable base 14.
[0018]
(5) Brake jack The brake jack 5 is a center-hole type jack similar to the push-out jack 4 and is provided on the opposite side of the movable jack 14 from the push-out jack 4 so as to penetrate the steel wire 3.
[0019]
The ability of the push-out jack 4 and the brake jack 5 is required to prevent the edge of the static friction between the water bottom tunnel 1 and the water bottom at the beginning of extrusion and the subsequent runaway, so that the load control is easy. Use things.
[0020]
<B> Operation of Extruding Device Next, a method for pushing out the bottom tunnel 1 using the device configured as described above will be described with reference to FIGS.
[0021]
The extrusion of the bottom tunnel 1 is performed by holding the steel wire 3 with a wedge of the extrusion jack 4 and repeatedly expanding and contracting to apply a reaction force to the extrusion reaction force receiving beam 2 so as to handle the steel wire 3. Is moved to extrude the bottom tunnel 1.
[0022]
Then, when the push-out jack 4 approaches the push-out reaction force receiving beam 2, the above operation is repeated by changing to the braking reaction force receiving beam 21 side.
[0023]
As described above, the water bottom tunnel 1 is pushed out by the push jack 4, and at the same time, a reaction force is applied to the brake reaction force receiving beam 21 and a braking force is applied to the water bottom tunnel 1 by the brake jack 5.
[0024]
That is, in a state where the steel wire 3 is gripped by the brake jack 5, the hydraulic pressure is gradually extracted through the pressure reducing valve, and a braking force is applied to the water bottom tunnel 1 through the movable frame 14. As a result, arbitrary pushing force and braking force can be applied to the bottom tunnel 1 and reliable extrusion control can be performed. Therefore, control can be easily performed even when the extrusion load of the bottom tunnel 1 increases.
[0025]
As described above, since the apparatus of the present invention can control a series of extrusion operations with an arbitrary load, it is an apparatus with no limit on the ability to cope with a small load at the beginning of extrusion and a final large capacity load.
[0026]
【The invention's effect】
As described above, according to the present invention, arbitrary pushing force and braking force can be applied to the bottom tunnel, and reliable extrusion control can be performed. Therefore, control is easy even if the extrusion load of the bottom tunnel increases, and accurate installation of the bottom tunnel is possible.
[Brief description of the drawings]
1 is a plan view of an extrusion apparatus of the present invention. FIG. 2 is a side view of the extrusion apparatus of the present invention. FIG. 3 is a front view of the extrusion apparatus of the present invention. FIG. 5 is an explanatory diagram of the operation of the center hole jack of the extrusion apparatus of the present invention. FIG. 6 is an explanatory diagram of the operation of the center hole jack of the extrusion apparatus of the present invention. Illustration of the operation of the center hole jack

Claims (1)

水底トンネルを押出すための装置において、
水底トンネルにセンターホール型の押出ジャッキと制動ジャッキを取り付け、
水底トンネルの押出方向に間隔をおいて、前方に押出反力受部材を、後方に制動反力受部材を設け、
これらの反力受部材間に張設した鋼線を前記の押出ジャッキ及び制動ジャッキに貫通させ、
押出反力受部材に反力をとって前記押出ジャッキにより水底トンネルを押出すと同時に、制動反力受部材に反力をとって前記制動ジャッキにより水底トンネルに制動力を付与するよう構成したことを特徴とする、
水底トンネルの押出装置。In an apparatus for extruding a submarine tunnel,
Attach a center hole type extrusion jack and a braking jack to the underwater tunnel,
At intervals in the extrusion direction of the bottom tunnel, an extrusion reaction force receiving member is provided at the front, and a braking reaction force receiving member is provided at the rear.
A steel wire stretched between these reaction force receiving members is passed through the extrusion jack and the braking jack,
A structure in which the reaction force is applied to the extrusion reaction force receiving member and the water bottom tunnel is extruded by the extrusion jack, and at the same time, the reaction force is applied to the braking reaction force reception member and the braking force is applied to the water bottom tunnel by the braking jack. Characterized by the
Submerged tunnel extrusion equipment.
JP22199698A 1998-08-05 1998-08-05 Submarine tunnel extrusion equipment Expired - Fee Related JP4014305B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22199698A JP4014305B2 (en) 1998-08-05 1998-08-05 Submarine tunnel extrusion equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22199698A JP4014305B2 (en) 1998-08-05 1998-08-05 Submarine tunnel extrusion equipment

Publications (2)

Publication Number Publication Date
JP2000054410A JP2000054410A (en) 2000-02-22
JP4014305B2 true JP4014305B2 (en) 2007-11-28

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JP22199698A Expired - Fee Related JP4014305B2 (en) 1998-08-05 1998-08-05 Submarine tunnel extrusion equipment

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7460739B2 (en) 2010-02-02 2024-04-02 アップル インコーポレイテッド Simultaneous cosmetic removal of surface materials on electronic devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7460739B2 (en) 2010-02-02 2024-04-02 アップル インコーポレイテッド Simultaneous cosmetic removal of surface materials on electronic devices

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