JP2003147792A - Position adjusting device and position adjusting method for immersed tube - Google Patents
Position adjusting device and position adjusting method for immersed tubeInfo
- Publication number
- JP2003147792A JP2003147792A JP2001349020A JP2001349020A JP2003147792A JP 2003147792 A JP2003147792 A JP 2003147792A JP 2001349020 A JP2001349020 A JP 2001349020A JP 2001349020 A JP2001349020 A JP 2001349020A JP 2003147792 A JP2003147792 A JP 2003147792A
- Authority
- JP
- Japan
- Prior art keywords
- submerged box
- box
- submerged
- position adjusting
- adjusting device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、沈埋函の位置調整
装置および位置調整方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position adjusting device and a position adjusting method for a submerged box.
【0002】[0002]
【従来の技術】運河、海峡など、水路下にトンネルを構
築する方法として、沈埋トンネル工法がある。この方法
は、ドライドックや造船ドック等の陸上部で製作した沈
埋函a1を、船で所定の場所まで曳航し、沈埋函a1の
バラストタンクに注水する等水中での重量を増加させた
後、クレーン船やバージ等により吊ワイヤを繰り出しな
がら沈埋函a1を降下する。仮置きした沈埋函a1は、
既設沈埋函a2の仮受ブラケット(図示せず)と鉛直ジ
ャッキbによって仮に支持され、引き寄せジャッキにて
既設沈埋函a2に引き寄せられる。次に沈埋函a1と沈
埋函a2の間に配置するバルクヘッド間の海水を排水す
ることで、新たに沈設する沈埋函a1が水圧で既設沈埋
函a2へ移動し、ガスケットが圧縮されて水圧接合され
る。このようにして、既設の沈埋函a2に函体を順次接
続してゆき、1本に構築した長いトンネルを埋め戻して
沈埋トンネルを構築する。2. Description of the Related Art As a method for constructing a tunnel under a waterway such as a canal or a strait, there is a submerged tunnel method. This method involves towing a submerged box a1 manufactured on land such as a dry dock or a shipbuilding dock to a predetermined location by a ship and pouring water into a ballast tank of the submerged box a1 to increase the weight in water, The submersible box a1 is lowered while paying out the suspension wire by a crane ship or a barge. The temporarily placed submerged box a1 is
It is temporarily supported by a temporary receiving bracket (not shown) of the existing submerged box a2 and a vertical jack b, and is drawn to the existing submerged box a2 by a pulling jack. Next, by draining the seawater between the bulkheads arranged between the submerged box a1 and the submerged box a2, the newly submerged submerged box a1 moves to the existing submerged box a2 by hydraulic pressure, and the gasket is compressed and hydraulically joined. To be done. In this manner, the boxes are sequentially connected to the existing submerged box a2 to backfill the long tunnel constructed into one to construct the submerged tunnel.
【0003】この沈埋函a1の沈設の一過程として、沈
埋函a1を引き寄せる前及び水圧接合後に、新たに構築
する沈埋函a1の軸方向をトンネル軸方向と一致させる
調整作業が必要である。従来は、図6に示すように沈埋
函a1を設置する地盤に先行して、基礎杭d2等により
支持した仮支承台d1を設置しておき、この上に沈埋函
a1を支持し、鉛直ジャッキbによって高さ調整を行っ
ている。また、トンネル軸の線形の修正は、沈設後に既
設沈埋函a2と沈設した沈埋函a1のバルクヘッド間内
に軸方向修正ジャッキcを複数設置して、各々のジャッ
キの伸長量を変化させることによって線形修正を行う。
上記作業により所定の位置に配置した沈埋函a1の下部
に基礎充填材eの注入を行い、所定の期間を経て鉛直ジ
ャッキbを解放する。その後、所定の埋め戻しにより沈
埋函a1を拘束した後、軸方向修正ジャッキcを解放す
ることによって、沈埋トンネルを構築する。As one process of immersing the submerged box a1, it is necessary to adjust the axial direction of the newly constructed submerged box a1 to be coincident with the tunnel axial direction before pulling the submerged box a1 and after hydraulic joining. Conventionally, as shown in FIG. 6, prior to the ground where the submerged box a1 is installed, a temporary support stand d1 supported by a foundation pile d2 and the like is installed, and the submerged box a1 is supported on the temporary support stand d1 to support the vertical jack. The height is adjusted by b. Further, the linear correction of the tunnel axis is performed by installing a plurality of axial correction jacks c between the bulkheads of the existing submerged case a2 and the submerged submerged box a1 after being sunk and changing the extension amount of each jack. Make a linear correction.
By the above work, the base filling material e is injected into the lower part of the submerged box a1 arranged at a predetermined position, and the vertical jack b is released after a predetermined period. After that, the submerged box a1 is restrained by a predetermined backfilling, and then the axial correction jack c is released to construct the submerged tunnel.
【0004】[0004]
【発明が解決しようとする課題】前記した従来の沈埋函
の位置調整方法にあっては、次のような問題点がある。
<イ>仮置きする沈埋函の支持のため、また沈埋函の高
さを調整するために、仮支承台や基礎杭等を沈埋函毎に
構築する必要がある。このため、多大な工事費用と工事
期間が必要であり非常に不経済である。
<ロ>また、この仮支承台の設置には±5cm以内の精
度高さが要求されている。この精度を確保するため、仮
支承台等の構築および測量につき、数多くの潜水夫が潜
水作業に幾度となく動員され、高い危険性を伴う。
<ハ>沈埋函を接合した後に軸方向の修正を必要とする
場合がある。多大な水圧力がかかる沈埋函の修正には、
極めて大容量の能力を有する軸方向修正ジャッキが複数
必要とされるため、ジャッキの製作コストおよび施工期
間がかかり不経済である。The conventional position adjusting method of the submerged box described above has the following problems. <a> It is necessary to construct a temporary support and foundation pile for each submerged box in order to support the submerged box to be temporarily placed and to adjust the height of the submerged box. Therefore, a large construction cost and construction period are required, which is very uneconomical. <B> In addition, high accuracy within ± 5 cm is required to install this temporary support. In order to ensure this accuracy, a large number of divers are mobilized for diving work many times in the construction and surveying of a temporary support stand, etc., which is highly dangerous. <C> There may be a case where axial correction is required after joining the submerged boxes. To fix a submerged box that requires a large amount of water pressure,
Since a plurality of axial correction jacks having an extremely large capacity are required, it is uneconomical because of the manufacturing cost and construction period of the jack.
【0005】[0005]
【発明の目的】本発明は上記したような従来の問題を解
決するためになされたもので、沈埋函の位置調整装置お
よび位置調整方法を提供することを目的とする。特に、
仮置きする沈埋函の支持のため、また沈埋函の高さを調
整するために必要とされる仮支承台や基礎杭等の設置を
不要とした沈埋函の位置調整装置および位置調整方法を
提供することを目的としている。更に、大深度での沈埋
トンネルの構築を容易に、また安全を確保した作業がで
きる沈埋函の位置調整装置および位置調整方法を提供す
ることを目的としている。また、新たに沈設する沈埋函
の位置をトンネル線形に沿って容易に調整することがで
きる沈埋函の位置調整装置および位置調整方法を提供す
ることを目的としている。さらに、沈埋函の軸方向の修
正に軸方向修正ジャッキを必要としない沈埋函の位置調
整装置および位置調整方法を提供することを目的として
いる。このうえ、沈埋函毎に製造する必要のない転用し
て使用することのできる経済的な沈埋函の位置調整装置
および位置調整方法を提供することを目的としている。
本発明は、これらの目的の少なくとも一つを達成するも
のである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object thereof is to provide a position adjusting device and a position adjusting method for a submerged box. In particular,
Providing a position adjusting device and a position adjusting method for a submerged box that does not require the installation of a temporary support or foundation pile, which is required to support the submerged box temporarily placed and to adjust the height of the submerged box. The purpose is to do. Further, it is another object of the present invention to provide a position adjusting device and a position adjusting method of a submerged box that can easily construct a submerged tunnel at a large depth and can perform work with safety. Further, another object of the present invention is to provide a position adjusting device and a position adjusting method for a submerged box, which can easily adjust the position of a new submerged box along the tunnel alignment. It is another object of the present invention to provide a position adjusting device and a position adjusting method for a submerged box that does not require an axial correction jack to correct the submerged box in the axial direction. Moreover, it is an object of the present invention to provide an economical position adjusting device and a position adjusting method for a submerged box that can be used without being manufactured for each submerged box.
The present invention achieves at least one of these objectives.
【0006】[0006]
【課題を解決するための手段】上記のような目的を達成
するために、本発明の沈埋函の位置調整装置および位置
調整方法は、仮置きした沈埋函の位置を調整する沈埋函
の位置調整装置であって、前記沈埋函と略同等の断面形
状を持つ調整函体と、前記沈埋函の位置を上下方向へ移
動可能な上下移動装置と、前記沈埋函の位置を沈埋函軸
方向に対して横方向へ移動可能な横移動装置と、からな
り、前記沈埋函の軸方向に略直交する方向に沈埋函の位
置を修正することを可能としたことを特徴とするもので
ある。In order to achieve the above object, a position adjusting device and a position adjusting method for a submerged box according to the present invention are provided for adjusting the position of a submerged box for adjusting the position of a temporarily placed submerged box. A device, an adjusting box body having a cross-sectional shape substantially equal to that of the submerged box, a vertical moving device capable of vertically moving the position of the submerged box, and a position of the submerged box with respect to the axial direction of the submerged box. And a lateral movement device that can move in the lateral direction. It is possible to correct the position of the submerged box in a direction substantially orthogonal to the axial direction of the submerged box.
【0007】また、本発明の沈埋函の位置調整装置およ
び位置調整方法は、仮置きした沈埋函の位置を調整する
沈埋函の位置調整装置であって、前記沈埋函と略同等の
断面形状を持つ調整函体と、前記沈埋函の位置を上下方
向へ移動可能な上下移動装置と、前記沈埋函の位置を沈
埋函軸方向に対して横方向へ移動可能な横移動装置と、
からなり、前記横移動装置を覆帯式により構成し、前記
調整函体の下部に配置し、前記沈埋函の軸方向に略直交
する方向に沈埋函の位置を修正することを特徴とするも
のである。Further, the position adjusting device and the position adjusting method of the submerged box according to the present invention is a position adjusting device for the submerged box which adjusts the position of the temporarily placed submerged box, and has a cross-sectional shape substantially equal to that of the submerged box. An adjusting box having, a vertical moving device capable of vertically moving the position of the submerged box, a lateral moving device capable of moving the position of the submerged box laterally with respect to the axial direction of the submerged box,
The lateral movement device is constituted by a band type, is arranged at the lower part of the adjustment box, and the position of the submerged box is corrected in a direction substantially orthogonal to the axial direction of the submerged box. Is.
【0008】さらに、本発明の沈埋函の位置調整装置お
よび位置調整方法は、仮置きした沈埋函の位置を調整す
る沈埋函の位置調整装置であって、前記沈埋函と略同等
の断面形状を持つ調整函体と、前記沈埋函の位置を上下
方向へ移動可能な上下移動装置と、前記沈埋函の位置を
沈埋函軸方向に対して横方向へ移動可能な横移動装置
と、からなり、前記横移動装置を前記調整函体の両側面
に配置する横移動ジャッキと、前記横移動ジャッキの押
し出しにより前記沈埋函を押し出しの反対方向へ移動す
ることによって、前記沈埋函の軸方向に略直交する方向
に沈埋函の位置を修正することを特徴とするものであ
る。Further, the position adjusting device and the position adjusting method of the submerged box according to the present invention is a position adjusting device for the submerged box which adjusts the position of the temporarily placed submerged box, and has a cross-sectional shape substantially equal to that of the submerged box. An adjustment box having, a vertical movement device capable of moving the position of the submerged box in the vertical direction, and a lateral movement device capable of moving the position of the submerged box laterally with respect to the axial direction of the submerged box, By laterally moving jacks for arranging the laterally moving device on both side surfaces of the adjusting box, and by pushing the laterally moving jacks to move the submerged box in a direction opposite to the push-out direction, substantially orthogonal to the axial direction of the submerged box. It is characterized in that the position of the submerged box is corrected in the direction of movement.
【0009】このほか、仮置きした沈埋函の位置調整方
法であって、前記のいずれかに記載する沈埋函の位置調
整装置を沈埋函に取り付けて、前記沈埋函の仮置き後、
前記位置調整装置によって前記沈埋函の位置を調整し、
前記沈埋函を所定の位置に固定した後、前記位置調整装
置を切り離して、以後前記位置調整装置を他の沈埋函の
位置調整装置として転用することを特徴とするものであ
る。In addition, a method for adjusting the position of a temporarily placed submerged box, wherein the submerged box position adjusting device described in any one of the above is attached to the submerged box, and after the temporary placement of the submerged box,
Adjusting the position of the submerged box by the position adjusting device,
After fixing the submerged box at a predetermined position, the position adjusting device is separated, and thereafter, the position adjusting device is used as a position adjusting device for another submerged box.
【0010】[0010]
【発明の実施の形態】以下図面を参照しながら本発明の
実施の形態について説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【0011】<イ>全体の構成
本発明の位置調整装置1は、沈埋函51と略同等の断面
形状を有する調整函体2によって外郭を形成し、その両
端をバルクヘッド63で閉鎖する。調整函体2には、位
置調整装置1を沈埋函51軸方向に対して上下、左右方
向へ移動することのできる上下移動装置3、横移動装置
4をそれぞれ配置している。バルクヘッド63には、せ
ん断キー61および引寄ジャッキ62等を配置し、これ
らによって位置調整装置1を沈埋函51の軸方向に接続
する。この結果、位置調整装置1を移動することで位置
調整装置1と一体に形成する沈埋函51の位置を修正す
ることができる。<A> Overall Configuration The position adjusting device 1 of the present invention forms an outer shell by the adjusting box 2 having a cross-sectional shape substantially equal to that of the submerged box 51, and both ends thereof are closed by bulkheads 63. The adjustment box 2 is provided with a vertical movement device 3 and a horizontal movement device 4 that can move the position adjustment device 1 vertically and horizontally with respect to the axial direction of the submerged box 51. A shear key 61, a pulling jack 62, and the like are arranged on the bulkhead 63, and the position adjusting device 1 is connected to the bulkhead 63 in the axial direction of the submersible box 51. As a result, the position of the submerged box 51 formed integrally with the position adjusting device 1 can be corrected by moving the position adjusting device 1.
【0012】<ロ>沈埋函
沈埋函51は、長さが80〜100メートルからなるブ
ロックであって、沈埋函51が多数連結して沈埋トンネ
ルを構築している。沈埋函51の構造には、通常RC
(鉄筋コンクリート)構造、鋼殻構造など各種の構造を
採用することができる。また、沈埋函51軸方向に略直
交する断面に可撓性機構を備えた構造を配置してもよ
い。沈埋函51は、両端接合部をバルクヘッド63で閉
鎖し、既設沈埋函体52との接合部の止水性を確保する
ために、従来と同様に沈埋函51の端部周辺部に加硫ゴ
ムなどの弾性材料で形成したゴムガスケット64を取り
付ける。バルクヘッド63の接続面には、次に連続して
配置する沈埋函51または位置調整装置1との連結を保
持するための引寄ジャッキ62および両函体の間に配置
するバルクヘッド63間の海水を排水できるバルブ65
を配置することができる。この他、バルクヘッド63に
は、せん断キー61、ハッチ66等を配置することもで
きる。<B> Submerged Box The submerged box 51 is a block having a length of 80 to 100 meters, and a large number of the submerged boxes 51 are connected to construct a submerged tunnel. The structure of the submerged box 51 is usually RC
Various structures such as (reinforced concrete) structure and steel shell structure can be adopted. Moreover, you may arrange | position the structure provided with the flexible mechanism in the cross section substantially orthogonal to the submerged box 51 axial direction. In the submerged box 51, both ends of the submerged box are closed by a bulkhead 63, and in order to secure the waterproofness of the joint with the existing submerged box body 52, the vulcanized rubber is applied to the peripheral part of the end of the submerged box 51 as in the conventional case. A rubber gasket 64 made of an elastic material such as is attached. On the connection surface of the bulkhead 63, between the submerged box 51 to be subsequently arranged or the pulling jack 62 for holding the connection with the position adjusting device 1 and the bulkhead 63 to be arranged between both boxes. Valve 65 that can drain seawater
Can be placed. In addition, the bulkhead 63 may be provided with a shear key 61, a hatch 66, and the like.
【0013】<ハ>位置調整装置
位置調整装置1は、沈埋函51とほぼ同一形状の断面を
有する調整函体2に、調整函体2を横へ移動することが
できる横移動装置4と、上下に移動することができる上
下移動装置3とを配置し、また両端面にはバルクヘッド
63を取り付け箱状を形成して構成する。沈埋函51と
位置調整装置1とは、それぞれのバルクヘッド63に取
り付けたせん断キー61や引寄ジャッキ62を介して接
続することができる。位置調整装置1は、新たに沈設す
る沈埋函51の一端に、同じ軸方向で連接する。沈埋函
51の他端は、既設の沈埋函52に接続する。沈埋函5
1に接続した位置調整装置1の位置をトンネル軸に対し
て略直交方向に移動することによって、位置調整装置1
と一体をなす沈埋函51の位置を調整することができ
る。この他、位置調整装置1には、位置調整装置1およ
び沈埋函51の軸方向の傾き、左右方向、位置等を検知
できるセンサーや位置調整装置1を移動させるためのワ
イヤ等を引掛ける吊り具72等を配置することができ
る。<C> Position Adjusting Device The position adjusting device 1 includes a lateral moving device 4 for laterally moving the adjusting box 2 on an adjusting box 2 having a cross section of substantially the same shape as the submerged box 51. A vertical moving device 3 which can move up and down is arranged, and bulkheads 63 are attached to both end faces to form a box shape. The submersible box 51 and the position adjusting device 1 can be connected via a shear key 61 and a pulling jack 62 attached to each bulkhead 63. The position adjusting device 1 is connected in the same axial direction to one end of a newly sunk submerged box 51. The other end of the submerged box 51 is connected to the existing submerged box 52. Submerged box 5
1 by moving the position of the position adjusting device 1 connected to No. 1 in a direction substantially orthogonal to the tunnel axis.
It is possible to adjust the position of the submerged box 51 that is integral with the. In addition to the above, the position adjusting device 1 includes a sensor that can detect the axial tilt, the left-right direction, the position, and the like of the position adjusting device 1 and the submerged box 51, and a hanging tool that hooks a wire or the like for moving the position adjusting device 1. 72 etc. can be arranged.
【0014】<ニ>上下移動装置
上下移動装置3は、位置調整装置1を上下方向に移動さ
せる装置であって、接続する沈埋函51高さを上下に調
整するものである。上下移動装置3の構造は、ジャッキ
等の構造であっても良く、上下移動装置3の揚重可能な
能力は、位置調整装置1と沈埋函51の重量を合わせた
ものを水中にて上下移動できるものとする。上下移動装
置3は、仮置きした位置調整装置1の下面に配置する。
上下移動装置3の加圧の方法としては、直接地盤に対し
て加圧する方法や後述する横移動装置4を介して加圧す
る方法等がある。<D> Vertical Moving Device The vertical moving device 3 is a device for moving the position adjusting device 1 in the vertical direction, and vertically adjusts the height of the submerged box 51 to be connected. The structure of the up-and-down moving device 3 may be a structure such as a jack, and the ability of the up-and-down moving device 3 to lift is such that the combined weight of the position adjusting device 1 and the submerged box 51 is moved up and down in water. It should be possible. The vertical movement device 3 is arranged on the lower surface of the position adjustment device 1 that is temporarily placed.
As a method of pressurizing the vertical movement device 3, there are a method of directly applying pressure to the ground and a method of applying pressure via a lateral movement device 4 described later.
【0015】<ホ>横移動装置
横移動装置4は、位置調整装置1を沈埋函51軸に対し
て横方向へ移動することにより、接続した沈埋函51を
連動して位置の修正をすることができる。横移動装置4
は、沈埋函51軸方向に対して左右に配置しており、調
整函体2の底面または側面に配置することができる。な
お、横移動装置4の配置員数および軸方向に対する対称
性は特に制約を受けない。横移動装置4は、上下移動装
置3と一体に形成して調整函体2に接続してもよく、ま
たそれぞれが独立して接続しても良い。横移動装置4
は、位置調整装置1および沈埋函51の合計重量を支え
るため、それらの位置を保持するのに十分な面積を備え
たものとする。所定の位置に設置した位置調整装置1の
底面と横移動装置4と地盤面との設置面が平行でない場
合でも、横移動装置4の支持面は、位置調整函体1と独
立した傾きによって支持することができるものとする。
この横移動装置4は、たとえば覆帯式41による構造や
ジャッキ等による構造とすることができる。<E> Lateral movement device The lateral movement device 4 moves the position adjusting device 1 in the lateral direction with respect to the axis of the submerged box 51 to interlock the connected submerged box 51 to correct the position. You can Lateral movement device 4
Are arranged on the left and right with respect to the axial direction of the submerged box 51, and can be arranged on the bottom surface or the side surface of the adjustment box 2. The number of members of the lateral movement device 4 and the symmetry with respect to the axial direction are not particularly limited. The lateral movement device 4 may be formed integrally with the vertical movement device 3 and connected to the adjustment box 2, or each may be independently connected. Lateral movement device 4
In order to support the total weight of the position adjusting device 1 and the submerged box 51, it is assumed to have an area sufficient to hold their positions. Even if the bottom surface of the position adjusting device 1 installed at a predetermined position and the installation surfaces of the lateral moving device 4 and the ground surface are not parallel, the supporting surface of the lateral moving device 4 is supported by an inclination independent of the position adjusting box 1. Shall be able to.
The lateral movement device 4 may have, for example, a structure of a band 41 or a structure of a jack or the like.
【0016】覆帯式41は、図1および図2に示すよう
に調整函体2の下部に配置して、移動方向が沈埋函51
軸方向に対して略直交する横方向に可動できるように配
置する。覆帯式41の構造は、たとえば複数の金属片を
帯上に連接して一つの円状に形成しており、この回転に
よって横方向へ移動することができる。尚、この形状
は、必ずしも上記の形状に拘束されるものではない。As shown in FIG. 1 and FIG. 2, the bandage type 41 is arranged at the lower part of the adjusting box 2 so that the moving direction is a submerged box 51.
It is arranged so as to be movable in the lateral direction substantially orthogonal to the axial direction. In the structure of the band type 41, for example, a plurality of metal pieces are connected to each other on the band to form a single circular shape, and can be moved laterally by this rotation. It should be noted that this shape is not necessarily restricted to the above shape.
【0017】ジャッキ式の横移動装置4を図3に示す。
これは、調整函体2の両側面に、沈埋函51軸方向に対
して横外部方向へジャッキを押し出すように配置する。
横移動ジャッキ42の先端部には、地盤よりほぼ直角上
向きに形成する支承板43を配置する。横移動ジャッキ
42から外部に押し出される力は、支承板43を介して
地盤に伝わる。その地盤との間に生じる摩擦力を反力と
して、位置調整装置1を動かす。すなわち、横移動ジャ
ッキ42の押し出す方向とは反対方向へ位置調整装置1
が移動する。A jack type lateral movement device 4 is shown in FIG.
This is arranged on both side surfaces of the adjustment box 2 so as to push the jack laterally outward with respect to the axial direction of the submerged box 51.
At the tip of the laterally moving jack 42, a support plate 43 is formed which is formed substantially vertically upward from the ground. The force pushed out from the lateral movement jack 42 is transmitted to the ground via the support plate 43. The position adjusting device 1 is moved by using a frictional force generated between the ground and the ground as a reaction force. That is, the position adjusting device 1 moves in the direction opposite to the direction in which the laterally moving jack 42 is pushed out.
Moves.
【0018】次に本発明の沈埋函の位置調整装置を使用
して沈埋函の位置調整方法について説明する。Next, a method for adjusting the position of the submerged box using the position adjusting device for the submerged box according to the present invention will be described.
【0019】[0019]
【実施例】<イ>沈埋函の降下
船で所定の場所まで曳航する。その後、沈埋函51へ向
けて海上クレーン71で位置調整装置1を誘導し、水圧
接合する。沈埋函51と位置調整装置1の重量調整を行
なった後に、沈設用バージ73のワイヤを繰り出しなが
ら、沈埋函51と位置調整装置1を所定の深度までゆっ
くりと沈降する(図4参照)。また、沈埋函51と位置
調整装置1は、それぞれを別々の吊り手段を用いて沈降
してもよいが、できるだけ深度の浅い位置で両者を連接
させた方が、揚重作業や潜水作業を行なう上では有利で
ある。[Embodiment] <B> Tow to a predetermined place by a submerged ship. After that, the position adjusting device 1 is guided to the submersible box 51 by the sea crane 71 and hydraulically joined. After the weight of the submersible box 51 and the position adjusting device 1 is adjusted, the submerged box 51 and the positional adjusting device 1 are slowly settled to a predetermined depth while paying out the wire of the setting barge 73 (see FIG. 4). Further, the submersible box 51 and the position adjusting device 1 may be settled by using different suspending means, but if the two are connected at positions as shallow as possible, lifting work and diving work are performed. Above is advantageous.
【0020】<ロ>沈埋函の接合
既に沈設した沈埋函52側から沈埋函51を引き込ん
で、水圧を利用して沈埋函51、52相互を接合する。
沈埋函51は、一端を既設の沈埋函52との接続によ
り、他端を位置調整装置1の駆動装置によって支持され
る。<B> Joining of Submerged Boxes The submerged box 51 is pulled in from the side of the submerged box 52 that has already been laid down, and the submerged boxes 51 and 52 are joined together by utilizing water pressure.
The submerged box 51 has one end connected to the existing submerged box 52 and the other end supported by the drive device of the position adjusting device 1.
【0021】<ハ>沈埋函の線形調整
沈埋函51の上下方向の位置調整は、上下移動装置3に
よって行い、横方向の位置調整は、横移動装置4によっ
て行う。横移動装置4による横方向の移動とは、既設沈
埋函52と沈埋函51との接続部を支点として調整函体
2の側面方向に形成する円弧上から接線方向への移動を
いう。なお、この移動距離の大きさは、支点となる箇所
が有する可撓性の大きさによる。沈埋函51の位置調整
は、上下方向、横方向どちらを先行して行っても良い。
調整函体2の位置調整に要する動力となる電源は、沈埋
函51内部より両者の間を仕切るバルクヘッド63のハ
ッチ66を開放して両函体を貫通し、供給することがで
きる。<C> Linear adjustment of submerged box The vertical position of the submerged box 51 is adjusted by the vertical moving device 3, and the lateral position is adjusted by the lateral moving device 4. The lateral movement by the lateral movement device 4 refers to movement in a tangential direction from an arc formed in the lateral direction of the adjustment box 2 with the connecting portion between the existing submerged box 52 and the submerged box 51 as a fulcrum. The magnitude of this movement distance depends on the flexibility of the fulcrum. The position of the submerged box 51 may be adjusted in the vertical direction or the horizontal direction first.
A power source, which is a power required for adjusting the position of the adjusting box 2, can be supplied by opening the hatch 66 of the bulkhead 63 that partitions the inside of the submerged box 51 and penetrating both boxes.
【0022】<ニ>沈埋函の固定
所定の位置に沈設する沈埋函51の位置調整装置1側の
下部に、充填材ストッパー81を配置して基礎充填材8
2の流れ止めとする(図5参照)。沈埋函51の下面と
地盤との間隙に基礎充填材82を充填する。基礎充填材
82の充填方法としては、沈埋函51を沈設するのに掘
削してなるトレンチ跡と沈埋函51の間から充填するこ
とができる。また、沈埋函51の下面に基礎充填材82
を充填するための注入口を設けて、函体の内部から充填
することもできる。<D> Fixing of Submerged Box A filling material stopper 81 is arranged below the position adjusting device 1 side of the submerged box 51 which is submerged at a predetermined position, and the foundation filling material 8 is provided.
2 is a flow stop (see FIG. 5). A base filler 82 is filled in the gap between the lower surface of the submerged box 51 and the ground. As a method of filling the base filling material 82, it is possible to fill the space between the trace of the trench formed by excavating the submerged case 51 and the submerged case 51. Further, the bottom surface of the submerged box 51 is provided with a base filler 82.
It is also possible to provide an injection port for filling the inside of the box body.
【0023】<ホ>位置調整装置の取り外し
基礎充填材82を充填し、所定の養生期間を経過した
後、上下移動装置3を位置調整装置1側へ収納する。こ
の結果、沈埋函51の支持が位置調整装置1から基礎充
填材82による支持へと移り変わる。次に位置調整装置
1と沈埋函51との接続を解放するために、両函体の間
のハッチ66を閉じて、バルクヘッド63間に水を浸入
させて、沈埋函51と位置調整装置1の水圧接合を解放
する。ワイヤを介した海上クレーン71により位置調整
装置1の高さを保持し、引寄ジャッキ62を解放する。
沈埋函51より切り離した位置調整装置1は、一旦回収
して新たな沈埋函に接続することにより、再度沈埋函の
線形修正に使用することができる。<E> Removal of Position Adjusting Device After filling the base filling material 82 for a predetermined curing period, the vertical moving device 3 is housed in the position adjusting device 1 side. As a result, the support of the submerged box 51 is changed from the position adjusting device 1 to the support by the base filler 82. Next, in order to release the connection between the position adjusting device 1 and the submerged box 51, the hatch 66 between the two boxes is closed and water is allowed to enter between the bulkheads 63, so that the submerged box 51 and the position adjusting device 1 are connected. Release the hydraulic joint. The height of the position adjusting device 1 is held by the sea crane 71 via the wire, and the pulling jack 62 is released.
The position adjusting device 1 separated from the submerged box 51 can be used again for linear correction of the submerged box once it is collected and connected to a new submerged box.
【0024】[0024]
【発明の効果】本発明の沈埋函の位置調整装置および位
置調整方法は以上説明したようになるから次のような効
果を得ることができる。
<イ>仮置きした沈埋函の支持、また沈埋函の高さを調
整するために、位置調整装置に備えた上下移動装置を使
用する。このため、仮支承台や基礎杭等の設置が不要と
なり、施工費の削減、施工期間の短縮に繋がり経済的で
ある。さらに、潜水夫による水中作業を伴う仮支承台等
の設置および測量が不要であるため、大幅なコスト削減
ができ、また安全面においても効果的である。
<ロ>位置調整装置に備えた横移動装置によって沈埋函
の線形修正を行うことができる。このため、沈埋函の間
に極めて大容量の能力を有する軸方向修正ジャッキを全
く配置する必要がなくなる。この結果、ジャッキの製作
コストや配置に要する期間が削減できるため経済的であ
る。
<ハ>位置調整装置は、沈埋函の高さおよび線形方向の
調整を一台で行うことができるうえ、沈埋函とは別体で
形成している。この結果、沈埋函の位置調整を一台でま
かなうことができ、また転用が可能であるため非常に経
済的である。これは、沈埋トンネルが長いほど効果が顕
著に現われ、大きな施工費の削減が期待できる。Since the position adjusting device and the position adjusting method for the submerged box of the present invention are as described above, the following effects can be obtained. <B> The vertical moving device provided in the position adjusting device is used to support the temporarily placed submerged box and to adjust the height of the submerged box. Therefore, it is not necessary to install a temporary support base or foundation pile, which leads to a reduction in construction cost and a construction period, which is economical. Further, since it is not necessary to install and measure a temporary support stand or the like that involves underwater work by a diver, it is possible to greatly reduce costs and also be effective in terms of safety. <B> The horizontal movement device provided in the position adjusting device can perform linear correction of the submerged box. This eliminates the need to place any axial correction jacks with extremely large capacity between the submersible boxes. As a result, the manufacturing cost of the jack and the period required for the arrangement can be reduced, which is economical. <C> The position adjusting device can adjust the height and the linear direction of the submerged box by one unit, and is formed separately from the submerged box. As a result, the position of the submerged box can be adjusted by one unit and can be diverted, which is very economical. This is because the longer the submerged tunnel is, the more remarkable the effect is, and a large reduction in construction cost can be expected.
【図1】本発明の沈埋函の位置調整装置の沈埋函軸方向
に略直交する断面の実施例の説明図。FIG. 1 is an explanatory view of an embodiment of a section of the position adjusting device for a submerged box according to the present invention which is substantially orthogonal to the axial direction of the submerged box.
【図2】本発明の沈埋函の位置調整装置の沈埋函軸方向
の断面の実施例の説明図。FIG. 2 is an explanatory view of an embodiment of a cross section in the axial direction of the submerged box of the submerged box position adjusting device of the present invention.
【図3】本発明の沈埋函の位置調整装置の沈埋函軸方向
に略直交する断面の実施例の説明図。FIG. 3 is an explanatory diagram of an embodiment of a cross section that is substantially orthogonal to the axial direction of the submerged box of the submerged box position adjusting device of the present invention.
【図4】本発明の沈埋函の位置調整装置を接続した沈埋
函の位置調整方法の実施例の説明図。FIG. 4 is an explanatory diagram of an embodiment of the position adjusting method of the submerged box to which the position adjusting device for the submerged box of the present invention is connected.
【図5】本発明の沈埋函の位置調整装置を接続した沈埋
函の位置調整方法の実施例の説明図。FIG. 5 is an explanatory diagram of an embodiment of the position adjusting method of the submerged box to which the position adjusting device for the submerged box of the present invention is connected.
【図6】従来の沈埋函の位置調整方法の説明図。FIG. 6 is an explanatory view of a conventional position adjusting method for a submerged box.
1・・・位置調整装置 2・・・調整函体 3・・・上下移動装置 4・・・横移動装置 41・・覆帯式 42・・横移動ジャッキ 43・・支承板 51・・沈埋函 1. Position adjustment device 2. Adjustment box 3 ... Vertical movement device 4 ... Lateral movement device 41 ... 42 ... Horizontal movement jack 43 ... Bearing plate 51 ... Submerged box
───────────────────────────────────────────────────── フロントページの続き (72)発明者 金子研一 東京都新宿区西新宿一丁目25番1号 大成 建設株式会社内 (72)発明者 土屋正彦 東京都新宿区西新宿一丁目25番1号 大成 建設株式会社内 Fターム(参考) 2D055 AA09 EA02 EA05 LA17 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Kenichi Kaneko 1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Masahiko Tsuchiya 1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. F-term (reference) 2D055 AA09 EA02 EA05 LA17
Claims (4)
の位置調整装置であって、 前記沈埋函と略同等の断面形状を持つ調整函体と、 前記沈埋函の位置を上下方向へ移動可能な上下移動装置
と、 前記沈埋函の位置を沈埋函軸方向に対して横方向へ移動
可能な横移動装置と、からなり、 前記沈埋函の軸方向に略直交する方向に沈埋函の位置を
修正することを可能とした、 沈埋函の位置調整装置。1. A submerged box position adjusting device for adjusting the position of a temporarily placed submerged box, comprising: an adjustment box body having a cross-sectional shape substantially equal to that of the submerged box; and a position of the submerged box in a vertical direction. A movable vertical movement device and a lateral movement device capable of moving the position of the submerged box laterally with respect to the axial direction of the submerged box, wherein the submerged box moves in a direction substantially orthogonal to the axial direction of the submerged box. A submerged box position adjustment device that can correct the position.
において、 前記横移動装置を覆帯式により構成し、前記調整函体の
下部に配置したことを特徴とする、 沈埋函の位置調整装置。2. The position adjusting device for a submerged box according to claim 1, wherein the lateral moving device is a band-type and is arranged at a lower portion of the adjustment box body. Adjustment device.
において、 前記横移動装置を前記調整函体の両側面に配置する横移
動ジャッキと、 前記横移動ジャッキの反力を受ける支承板と、より構成
し、 前記横移動ジャッキの押し出しにより前記沈埋函を押し
出しの反対方向へ移動することを特徴とする、 沈埋函の位置調整装置。3. The position adjusting device for a submerged box according to claim 1, wherein a laterally moving jack for arranging the laterally moving device on both side surfaces of the adjusting box, and a support plate for receiving a reaction force of the laterally moving jack. The position adjusting device for the submerged box, wherein the submerged box is moved in a direction opposite to the push out by pushing out the laterally moving jack.
て、 請求項1乃至請求項3のいずれかに記載する沈埋函の位
置調整装置を沈埋函に取り付けて、 前記沈埋函の仮置き後、前記位置調整装置によって前記
沈埋函の位置を調整し、 前記沈埋函を所定の位置に固定した後、前記位置調整装
置を切り離して、 以後前記位置調整装置を他の沈埋函の位置調整装置とし
て転用することを特徴とする、 沈埋函の位置調整方法。4. A method for adjusting the position of a temporarily placed submerged box, wherein the submerged box position adjusting device according to any one of claims 1 to 3 is attached to the submerged box, and the submerged box is temporarily placed. After that, the position of the submerged box is adjusted by the position adjusting device, the submerged box is fixed at a predetermined position, the position adjusting device is separated, and then the position adjusting device is adjusted to the position adjusting device of another submerged box. A method for adjusting the position of a submerged box, which is characterized by being diverted as.
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JP2015169018A (en) * | 2014-03-07 | 2015-09-28 | 大成建設株式会社 | Self-posture control type submerged caisson and construction method of submerged tunnel |
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JP2015169018A (en) * | 2014-03-07 | 2015-09-28 | 大成建設株式会社 | Self-posture control type submerged caisson and construction method of submerged tunnel |
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