JP3363387B2 - Construction method of drain material for dredged soil and soft ground - Google Patents
Construction method of drain material for dredged soil and soft groundInfo
- Publication number
- JP3363387B2 JP3363387B2 JP23499298A JP23499298A JP3363387B2 JP 3363387 B2 JP3363387 B2 JP 3363387B2 JP 23499298 A JP23499298 A JP 23499298A JP 23499298 A JP23499298 A JP 23499298A JP 3363387 B2 JP3363387 B2 JP 3363387B2
- Authority
- JP
- Japan
- Prior art keywords
- drain material
- driving
- work
- vertical
- vertical drain
- 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.)
- Expired - Lifetime
Links
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、浚渫土・軟弱地盤
に多数の垂直ドレーン材を深く打ち込み、この垂直ドレ
ーン材に帯状水平ドレーン材を接続して軟弱地盤又は浚
渫土中の水をドレーン材を用いて排水する地盤改良のた
めのドレーン材の打設施工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method in which a large number of vertical drain materials are deeply driven into dredged soil / soft ground, and strip-shaped horizontal drain materials are connected to the vertical drain materials to drain water in the soft ground or the dredged soil. The method of placing drainage material for improvement of the ground drained by using.
【０００２】[0002]
【従来の技術】従来、堤体・ケーソンで囲われている浚
渫地・湖・沼・泊地等の軟弱地盤の浚渫・地盤改良工事
で、浚渫土・軟弱地盤の排水をよくするため、浚渫土・
軟弱地盤中に垂直ドレーン材を多数埋設させて、垂直ド
レーン材を介して水を外部に排水する工法が開発されて
いる。この垂直ドレーン材は浚渫土・軟弱地盤中に０．
８〜２．５ｍピッチで多数打ち込まれる。従来のドレー
ン材を用いての軟弱地盤改良工法は、数ｍ〜４５ｍ程の
深さを有する軟弱地盤上にネット敷きを行い、そのネッ
ト上に砂を１〜１．５ｍの厚みに盛土して水平のドレー
ン層を形成するとともに、自走作業機が走行できるだけ
の支持力を与え、その後自走式垂直ドレーン材打込作業
機を盛土上を走行させて多数の垂直ドレーン材を打ち込
み、垂直ドレーン材を砂の水平ドレーン層に貫通させて
接続させ、その後載荷盛土を行う。軟弱地盤中の水・液
体は垂直ドレーン材と砂の水平ドレーン層を介して外部
へ排出される。排水されて圧密沈下した後に充分な強度
の支持地盤を形成させるものである。この工法は、水平
ドレーン層の支持力に高い値を要求され、水平ドレーン
層として少ない資源の砂を多量に使用するためコスト高
となる。しかも砂の投入作業に時間とコストを費すもの
であった。又、軟弱地盤上に積極的に水を貯え、貯え水
に浮べた作業船からジオテキスタイル等のネットを敷
き、その後０．５〜１ｍ程の厚みに砂を投下して水面下
にある軟弱地盤上に砂の水平ドレーン層を形成し、その
後作業船を浮べて多数の垂直ドレーン材を水面下の軟弱
地盤中に打ち込み、打ち込んだ後軟弱地盤上に貯えた水
を排水し、圧密沈下させながら盛土して軟弱地盤中の水
を垂直ドレーン材と砂の水平ドレーン層を介して外部に
排水して軟弱地盤を改良する工法も知られている。この
工法でも砂が多量に使用されるためコスト高いものとな
っている。この工法に用いられるドレーン材打込作業船
は、２０〜５０ｍの垂直ポストを立設し、垂直ポストに
垂直ドレーン材打込装置を装置した重量２０〜３０トン
の自走式垂直ドレーン材打込機を船体甲板上に複数台固
定している。作業はこのドレーン材打込作業船の船体全
体を左右方向に０．８〜２．５ｍ毎移動・停船を行って
左右方向に０．８〜２．５ｍ毎の一列の垂直ドレーン打
込みを行ない、、一列の垂直ドレーン材の打込後に船体
全体を０．８〜２．５ｍ前進させることを繰り返して広
い領域の地盤改良を行うものである。このドレーン材打
込作業方法では、船体全体を左右方向に０．８〜２．５
ｍ毎の多数回の移動・停船を行うため船体移動作業に多
大の労力と時間を費やすもので、又船体移動は精度が悪
く、垂直ドレーン材の打込位置精度が悪いものであっ
た。更にこの施工方法は泥上施工工事では船体の移動が
難しいので採用出来るものではなかった。たとえこの垂
直ドレーン材打込工法を泥上施工で使用しても垂直ドレ
ーン材の打ち込み出来る範囲は、船体の巾以内の範囲し
か出来ないので、先に垂直ドレーン材を打込んで施工済
みの領域との境界付近の垂直ドレーン材の打込み作業は
先に打込んだ領域の境界付近の垂直ドレーン材に船体が
乗り上げるようにしない限りできない。そのため泥上施
工では、既打込みの垂直ドレーン領域の境界付近の垂直
ドレーン材の打込みは実用上できないものであった。2. Description of the Related Art Conventionally, in order to improve the drainage of dredged soil / soft ground by the dredging / ground improvement work of the soft ground such as the dredge, the lake, the swamp, and the anchorage surrounded by the dam body / caisson.・
A method has been developed in which a large number of vertical drain materials are embedded in soft ground and water is drained to the outside through the vertical drain materials. This vertical drain material is used for dredged soil and soft ground.
A large number are driven at a pitch of 8 to 2.5 m. In the conventional soft ground improvement method using drain material, a net is laid on the soft ground having a depth of several meters to 45 meters, and sand is laid on the net to a thickness of 1 to 1.5 meters. Forming a horizontal drain layer and giving enough supporting force for the self-propelled work machine to travel, and then driving the self-propelled vertical drain material-driving work machine on the embankment to drive in a large number of vertical drain materials, and The timber is pierced and connected to the horizontal sand drain layer, after which loading embankment is performed. Water and liquid in the soft ground are discharged to the outside through the vertical drain material and the horizontal drain layer of sand. After being drained and consolidated, it forms a supporting ground with sufficient strength. This method requires a high value for the bearing capacity of the horizontal drain layer, and the cost is high because a large amount of sand, which is a small resource, is used as the horizontal drain layer. Moreover, it takes time and cost to insert the sand. In addition, water is positively stored on the soft ground, a net such as geotextile is laid from a work boat floating in the stored water, and then sand is dropped to a thickness of about 0.5 to 1 m to form the soft ground below the water surface. After that, a horizontal drain layer of sand is formed, and then the work boat is floated and a large number of vertical drain materials are driven into the soft ground below the surface of the water, and after that, the water stored on the soft ground is drained, and the embankment is done while consolidating. A method of improving the soft ground by draining the water in the soft ground to the outside through the vertical drain material and the horizontal drain layer of sand is also known. This method also has a high cost because a large amount of sand is used. The drain material driving work vessel used in this method is a self-propelled vertical drain material driving machine having a vertical post of 20 to 50 m erected and a vertical drain material driving device installed on the vertical post. Multiple machines are fixed on the deck of the ship. For the work, the entire hull of this drain material driving work vessel is moved laterally every 0.8 to 2.5 m and stopped, and one row of vertical drain driving every 0.8 to 2.5 m is performed laterally. , The entire hull is advanced 0.8 to 2.5 m after driving in a row of vertical drain material to improve the ground in a wide area. In this drain material driving work method, the entire hull is 0.8 to 2.5 in the horizontal direction.
Since a large number of movements / stops per m are required, a great deal of labor and time are required to move the hull, and the hull movement is inaccurate and the vertical drain material driving position is inaccurate. Furthermore, this construction method cannot be adopted because it is difficult to move the hull during construction work on mud. Even if this vertical drain material driving method is used in mud construction, the range of vertical drain material that can be driven is only within the width of the hull, so the area where the vertical drain material has been driven first has been completed. The vertical drain material in the vicinity of the boundary between and can not be driven unless the hull is set on the vertical drain material in the vicinity of the boundary of the previously driven area. Therefore, in the case of mud construction, it was practically impossible to drive the vertical drain material near the boundary of the already driven vertical drain area.
【０００３】[0003]
【発明が解決しようとする課題】本発明が解決しようと
する課題は、従来のこれらの問題点を解消し、垂直ドレ
ーン材の打込作業及び垂直ドレーン材と水平ドレーン材
との接続作業が効率的且つ容易に行え、作業コストを大
巾に低減でき、又正確な位置に垂直ドレーン打込みが行
え且つ安全に作業が行える浚渫土・軟弱地盤のドレーン
材打設施工法を提供することにある。本発明の第２の課
題は、泥上施工に於いて打込施工済み領域の境界のドレ
ーン工事が正確に行え、又船体の多少の左右移動ズレ・
蛇行があっても正確な位置での垂直ドレーン材の打込み
及び左右端の垂直ドレーン材の正確な打込みが可能な浚
渫土・軟弱地盤のドレーン材打設施工法を提供すること
にある。SUMMARY OF THE INVENTION The problems to be solved by the present invention are to solve these problems in the prior art and to efficiently drive the vertical drain material and connect the vertical drain material and the horizontal drain material. It is an object of the present invention to provide a method for placing a drain material for dredged soil / soft ground, which can be performed easily and easily, the work cost can be greatly reduced, and the vertical drain can be driven at an accurate position and the work can be performed safely. A second object of the present invention is to accurately perform drain work at the boundary of the already-prepared area in mudwork, and to make a slight lateral displacement of the hull.
It is an object of the present invention to provide a method for placing a drain material for dredged soil / soft ground, which enables the vertical drain material to be accurately driven and the vertical drain materials at the right and left ends to be accurately driven even if there is meandering.
【０００４】[0004]
【課題を解決するための手段】かかる課題を解決した本
発明の構成は、
１） 台船甲板の一周縁に沿って垂直ドレーン材打込機
を横行自在に装置し且つ長尺の通水性ある帯状水平ドレ
ーン材と垂直ドレーン材とを搭載したドレーン材打込作
業船を浚渫土・軟弱地盤の泥面に浮べ、同ドレーン材打
込作業船を船外の遠方位置に固定した複数のアンカーに
係留ワイヤでもって係留し、同係留ワイヤをウインチ操
作で引張・繰り出してドレーン材打込作業船を移動でき
るようにし、まず同ドレーン材打込作業船を所定打込位
置まで動かして停船させ、垂直ドレーン材打込機をその
設置された甲板周縁に沿って打込位置の始端まで横行さ
せて静止させ、その後垂直ドレーン材打込機を作動させ
て下端にアンカー板を取付けた垂直ドレーン材を浚渫土
又は軟弱地盤中に深く打ち込み、垂直ドレーン材を打ち
込んだ後泥面上から突出した位置で垂直ドレーン材を切
断し、その切断された未打込み側の垂直ドレーン材の下
端にアンカー板を取付け、前記の垂直ドレーン材の打込
み作業から切断した未打込側垂直ドレーン材の下端にア
ンカー板を取付ける作業までを作業に並行して前に打込
んで切断された打込み側の垂直ドレーン材の上端部に水
平ドレーン材を通水性があるように接続し、その後に垂
直ドレーン材打込機を甲板周縁に沿って水平ドレーン材
を引き出しながら次の左右の打ち込み位置まで横行して
静止させ、その後前記同様に垂直ドレーン材の打込み・
切断・アンカー板取付作業及び前の垂直ドレーン材の上
端と水平ドレーン材との接続の作業を並行して行い、そ
の後同様に垂直ドレーン材打込機の横行・静止作業の後
の垂直ドレーン材の打込み・切断・アンカー板取付作業
及び水平ドレーン材との接続作業の平行作業を行うこと
を繰り返すことで、甲板周縁に沿って水平ドレーン材と
接続された多数の垂直ドレーン材を一列に打ち込んだ状
態とし、その後に接続された水平ドレーン材を切離して
又は切離さないでドレーン材打込作業船をウインチ操作
で次の打込列位置まで前進させて停船させ、その後前記
同様に垂直ドレーン材の打込み・切断・アンカー板取付
作業及びこの作業と並行しての水平ドレーン材との接続
作業を行った後に左右方向の次の打込み位置までの垂直
ドレーン材打込み機の横行・静止を甲板周縁に沿って繰
り返し、この列の垂直ドレーン材打込みとこれと接続し
た水平ドレーン材の敷設を行ない、前記同様ドレーン材
打込作業船を次の打込み列位置まで前進させて前記同様
にドレーン材の打込と敷設を行うことを繰り返して広い
範囲の浚渫土・軟弱地盤に多数の垂直ドレーン材とこれ
と接続された水平ドレーン材とを敷設していくことを特
徴とする浚渫土・軟弱地盤のドレーン材打設施工法
２） 台船甲板一周縁と平行な方向にレールを台船甲板
上に設け、しかも同レールを台船の前記甲板一周縁と直
交する左右側面から左右方向に長く突出するように延長
し、同レール上を走行する横行ベースを設け、同横行ベ
ースに垂直ドレーン材打込機を装置して横行ベースをレ
ールに沿って動かすことで垂直ドレーン材打込機を甲板
周縁に沿って台船の左右側面より外側位置まで移動でき
るように横行自在にしたドレーン材打込作業船を使用
し、垂直ドレーン材を打ち込んだ施工済み領域の境界か
ら離れた位置で領域境界に沿ってドレーン材打込作業船
をウインチ操作で移動させながら垂直ドレーン材の打込
みと水平ドレーン材の敷設を行うとともに、垂直ドレー
ン材打込機をレールの左右延長部分まで動かして台船の
左右側面を超えた境界付近位置でも垂直ドレーン材を打
ち込み、台船の左右側面と施工済み領域の境界との間の
領域にも垂直ドレーン材を打ち込み且つ施工済み領域の
敷設した水平ドレーン材と作業中の水平ドレーン材とを
接続して垂直ドレーン材の打込みと水平ドレーン材の敷
設を広域に行う前記１）記載の浚渫土・軟弱地盤のドレ
ーン材打設施工法にある。Means for Solving the Problems The constitution of the present invention which has solved the above problems is as follows: 1) A vertical drain material driving machine is traversable along one peripheral edge of a deck of a ship and has a long water permeability. A drain material driving work vessel equipped with a strip-shaped horizontal drain material and a vertical drain material is floated on the mud surface of dredged soil / soft ground, and the drain material driving work vessel is used as a plurality of anchors fixed at distant positions outside the ship. Mooring with a mooring wire, pulling and unwinding the mooring wire by winch operation so that the drain material driving work ship can be moved.First, move the drain material driving work ship to a predetermined driving position and stop it, and then move it vertically. The drain material driving machine is made to traverse along the periphery of the installed deck to the starting end of the driving position and stopped, and then the vertical drain material driving machine is operated to dredge the vertical drain material with the anchor plate attached to the lower end. Tomatata After driving deeply into the soft ground and driving the vertical drain material, cut the vertical drain material at the position projecting from the mud surface, and attach the anchor plate to the lower end of the cut vertical drain material on the uninjected side. Parallel to the upper end of the vertical drain material on the driving side, which was driven and cut in parallel with the work, from the operation of driving the vertical drain material to the work of attaching the anchor plate to the lower end of the vertical drain material that has not been driven. Connect the drain material so that it has water permeability, and then pull out the horizontal drain material along the peripheral edge of the deck while moving horizontally to the next left and right driving positions, and then stand still. Drain material driving
The cutting / anchor plate installation work and the work of connecting the upper end of the previous vertical drain material to the horizontal drain material are performed in parallel, and then the vertical drain material driving machine is traversed in the same manner, and the vertical drain material after the stationary operation is performed. A state in which a large number of vertical drain materials connected to the horizontal drain material are driven in a row along the periphery of the deck by repeating parallel work such as driving, cutting, anchor plate attachment work, and connection work with the horizontal drain material. After that, with or without disconnecting the connected horizontal drain material, the drain material driving work vessel is advanced to the next driving row position by the winch operation and stopped, and then the vertical drain material is driven in the same manner as above.・ Cutting / anchor plate installation work and connection work with the horizontal drain material in parallel with this work, and then vertical drain material driving to the next driving position in the left / right direction Repeatedly traverse and stand still along the peripheral edge of the deck, lay the vertical drain material in this row and lay the horizontal drain material connected to it, and move the drain material driving work vessel forward to the next row position as described above. It is characterized in that a large number of vertical drain materials and horizontal drain materials connected thereto are laid on a wide range of dredged soil / soft ground by repeating the driving and laying of drain materials in the same manner as described above. Construction method of drainage material for dredged soil / soft ground 2) Rails are mounted on the deck of the deck in a direction parallel to one edge of the deck.
It is installed on the top and the rail is directly connected to the one edge of the deck.
Extending from the intersecting left and right sideways to the left and right, providing a traverse base that runs on the rail, and moving the traverse base along the rail by installing a vertical drain material driving machine on the traverse base. The vertical drain material driving machine can be traversed so that it can be moved to the outer position from the left and right sides of the pontoon along the deck edge. Drain material driving along the boundary at a position away from the boundary While driving the work vessel by winch operation, vertical drain material is driven and horizontal drain material is laid, and the vertical drain material driving machine is extended to the left and right of the rail. move to the portion of the barge
Vertical drain material is driven even in the vicinity of the boundary beyond the left and right side surfaces, vertical drain material is also driven in the area between the left and right side surfaces of the barge and the boundary of the constructed area, and work is performed with the horizontal drain material laid in the constructed area. The method for driving a drain material for dredged soil / soft ground described in 1) above, in which the vertical drain material is driven and the horizontal drain material is laid in a wide area by connecting the horizontal drain material therein.
【０００５】[0005]
【作用】本発明では、垂直ドレーン材打込機はレール・
横行ベース等によって台船甲板周縁に沿って横行自在に
装置されているので、垂直ドレーン材打込機の横行は迅
速・精確且つ容易で、任意の位置に自在に停止できる。
垂直ドレーン材打込機による打込み・垂直ドレーン材の
切断・アンカー板の取付作業と、垂直ドレーン材と水平
ドレーン材との接続作業を並行して行うのでドレーン構
築作業が効率的に行え、しかも通水性の帯状の垂直ドレ
ーン材を帯状の水平ドレーン材と接続して排水路を形成
するので、砂を使用したドレーン層に比べて大巾に安価
に且つ工期短縮して施工できる。特に、レールを台船の
左右側面から左右に延長し、垂直ドレーン材打込機を台
船の左右側面から左右に離れた泥上・海上に移動させる
ことができるものでは、前に施工して垂直ドレーン材・
水平ドレーン材を構築した施工済み領域の境界に沿って
且つ境界から離れた位置で台船を動かしながら台船と施
工済み領域の境界との間の境界領域の上方に垂直ドレー
ン材打込機をレールの左右延長部まで移動させることで
既打設のドレーン材を破壊することなく境界領域の垂直
ドレーン材の打ち込み・接続作業を可能とする。又、台
船がウインチの操作ミス等で左右にズレて前進されて
も、又は多少の蛇行があっても、左右端の垂直ドレーン
材の打込位置は、レールの左右延長部を使っての位置調
整でき、正確な位置での垂直ドレーン材の打込が行え
る。In the present invention, the vertical drain material driving machine is
Since the traverse base or the like is used to freely traverse along the peripheral edge of the deck, the traverse of the vertical drain material driving machine is quick, accurate, and easy, and can be freely stopped at any position.
Drain construction work can be carried out efficiently and in addition, since the work of driving with the vertical drain material driving machine, cutting of the vertical drain material, attachment of the anchor plate, and connection work of the vertical drain material and the horizontal drain material are performed in parallel. Since the drainage channel is formed by connecting the water-based strip-shaped vertical drain material with the strip-shaped horizontal drain material, the construction can be performed at a much lower cost and in a shorter construction period than the drain layer using sand. In particular, the rail of Theissen
For those that can be extended from the left and right sideways to the left and right and the vertical drain material driving machine can be moved from the left and right side surfaces of the ship to the mud and the sea left and right, the vertical drain material
A vertical drain material driving machine is installed above the boundary area between the barge and the constructed area while moving the ship along the boundary of the constructed area where the horizontal drain material is constructed and at a position away from the boundary. By moving to the left and right extension of the rail, it is possible to drive and connect vertical drain material in the boundary area without destroying the existing drain material. In addition, even if the barge is moved to the left and right due to a winch operation error, or if there is some meandering, the vertical drain material at the left and right ends can be driven in using the left and right extension parts of the rail. The position can be adjusted and the vertical drain material can be driven in at an accurate position.
【０００６】[0006]
【発明の実施の形態】本発明の施工現場は、浚渫土・軟
弱地盤の泥面であるが、この泥面で１〜３ｍ程の水を貯
えた状態・浅瀬での施工も行えるものであり、又本発明
に含まれるものである。本発明の垂直ドレーン材打込機
を横行させるためレールを複数設置し、一つのレールを
台船の重心を超えて垂直ドレーン材打込機を設置した甲
板周縁と反対側の周縁側（船首側）寄りに配置するのが
安定上好ましい。又その上に横行ベースを走行できるよ
うにし、同横行ベースの垂直ドレーン材打込機設置側の
反対側に運転室、重量物（発電装置、油圧ユニット等装
置）を配置することで垂直ドレーン材打込機の甲板周縁
端の重量による船体の傾きを少なくするようにすること
が好ましい。台船は複数の小型フロート台船を組立分解
自在に連結することが運送上有効である。しかも小型フ
ロート台船はトラックで陸上運送できる大きさ・重量の
船長１０ｍ程以下、船巾２．２ｍ以下、重量４トン以下
の小型フロート台船を複数基組み立てて現地で構築でき
るようにするのがよい。垂直ドレーン材の切断作業・ア
ンカー板取り付け作業と水平ドレーン材の接続作業の為
に垂直ドレーン材打込機になるべく台船から張り出した
作業デッキを昇降自在に設けることが好ましい。垂直ド
レーン材打込機は、台船甲板上の前後二列以上のレール
によって横行させ、垂直ドレーン材打込機の倒れ込みを
前後二列以上のレールとの係止力で防止できるようにす
るのが望ましい。又レールは船体の左右側面より垂直ド
レーン材の打ち込み間隔の２倍以上で３〜５ｍ前後程長
く左右に延長するのが境界領域の施工が容易となるので
好ましい。又延長部のレールは補強材又は張り出し床板
などで強度補強して、充分な荷重に耐えれるようにす
る。BEST MODE FOR CARRYING OUT THE INVENTION The construction site of the present invention is a mud surface of dredged soil / soft ground, but the mud surface can also be used in a shallow water condition or in a shallow water. It is also included in the present invention. A plurality of rails are installed to traverse the vertical drain material driving machine of the present invention, and one rail exceeds the center of gravity of the pontoon and the peripheral side opposite to the deck peripheral edge where the vertical drain material driving machine is installed (the bow side) ) It is preferable to dispose it closer to the base for stability. In addition, the traverse base can be run on it, and the vertical drain material can be installed by arranging the driver's cab and heavy objects (power generators, hydraulic units, etc.) on the side opposite to the side where the vertical drain driver is installed. It is preferable to reduce the inclination of the hull due to the weight of the peripheral edge of the deck of the driving machine. It is effective for transportation to connect a plurality of small float pontoons so that they can be assembled and disassembled freely. In addition, small float pontoons can be built on site by assembling multiple small float pontoons with a size and weight of about 10 m or less, a ship width of 2.2 m or less, and a weight of 4 tons or less that can be transported by land on a truck. Is good. For the work of cutting the vertical drain material, attaching the anchor plate, and connecting the horizontal drain material, it is preferable to provide a vertically movable work deck extending from the pontoon to be a vertical drain material driving machine. The vertical drain material driving machine should be traversed by two or more rows of front and rear rails on the deck, so that the vertical drain material driving machine can be prevented from collapsing by the locking force with the rails of two or more rows. Is desirable. Further, it is preferable that the rail extends from the left and right side surfaces of the hull to the left and right twice as long as about 3 to 5 m or more than the driving interval of the vertical drain material so that the boundary area can be easily constructed. In addition, the rail of the extension part is reinforced with a reinforcing material or a protruding floor plate so that it can withstand a sufficient load.
【０００７】[0007]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。本実施例に使用するドレーン材打込作業船の船体
はトラックで陸上運送できる小型フロート台船を現場で
９基連結し、又垂直ドレーン材打込作業機には昇降自在
な作業デッキを設けて泥上施工を行う例である。図１
は、実施例に使用するドレーン材打込作業船を示す側面
図である。図２は、実施例のドレーン材打込作業船を示
す平面図である。図３は実施例の横行ベースの走行機構
を示す説明図である。図４は実施例の垂直ドレーン材の
ケーシングフレームの昇降装置を示す説明図である。図
５は、実施例の施工作業を示す説明図である。図６，７
は、実施例のドレーン材打設施工の工程説明図である。
図８は、実施例の垂直ドレーン材打込作業と水平ドレー
ン材接続作業を示す説明図である。図９は、実施例の作
業デッキの昇降機構の説明図である。図１０は、実施例
の軟弱地盤改良工法の全体工程を示す説明図である。図
１１，１２は、実施例のドレーン材打込工程を示す説明
図である。図１３は、実施例の施工済み領域の境界領域
のドレーン材打設施工作業を示す説明図である。図１４
は、一つの横行ベースに２基のドレーン材打込装置を装
置した例を示す説明図である。図１５は、図１４のＸ−
Ｘ断面図である。図１６は、横行ベースを２台対称的に
動かすドレーン材打込装置を示す説明図である。図中Ａ
は実施例に使用するドレーン材打込作業船、１はドレー
ン材打込作業船Ａの長さ１０ｍで船巾２１ｍ程の台船、
２は垂直ドレーン材打込機、２ａは９ｍ程の長さで４本
連結されて３３ｍ長さになる垂直ドレーン材打込み機２
のリーダー、２ｂは同リーダー２ａに沿って地盤に向っ
て下降させられる巾１０ｃｍ程の通水性のプラスチック
製垂直ドレーン材、２ｃは同垂直ドレーン材巻取りドラ
ム、２ｄは垂直ドレーン材２ｂを地盤中に挿入するため
のガイドケーシング、２ｅはガイドケーシング２ｄを地
盤中に送り込む推進ローラ、２ｆは垂直ドレーン材２ｂ
の下端に取付けたアンカー板、２ｇは台船から張り出し
た作業デッキ、２ｈは垂直ドレーン材打込機の駆動部、
２ｉは横行ベース４の反対端に設けた運転室、２ｊは作
業デッキ２ｇを上下動させるシリンダー、２Ｋは水平ド
レーン材１１と垂直ドレーン材２ｂとを接続する接続装
置である。３は台船１に設けた一対のレール、３ａは同
レールの台船側面から張り出した延長部、４は同レール
上を走行する横行ベース、５はウインチ装置、６はウイ
ンチ装置のワイヤ、４ａは横行ベースのレール走行用車
輪、４ｂは車輪回動軸、４ｃは車輪駆動部、７は同ワイ
ヤの途中に取付けた滑車、８は陸上でウインチ装置５を
固定するアンカー、１０は長さ１０ｍ、船巾２．２ｍの
小型のトラック運送できる小型フロート台船、１１は巾
３０ｃｍ程の通水性プラスチック製の水平ドレーン材、
１１ａ水平ドレーン材巻取りドラム、１２は水平ドレー
ン材１１と垂直ドレーン材２ｂとの接続金具、１３は水
平ドレーン材１１と接続した暗渠である。Ｂは軟弱地
盤、Ｃは浚泄土である。又図１４，１５は、一台の横行
ベース２６に前後２基の垂直ドレーン材打込機を装置し
たドレーン作業船の例である。図中、２０はリーダーと
なるポストタワー、２０ａはポストタワーのガイド、２
１，２２はケーシングフレーム、２１ａ，２２ａは同ケ
ーシングフレームを取付けるアタッチメント、２１ｂ，
２２ｂは同昇降台のガイドローラー、２３，２４はペー
パードレーン材の垂直ドレーン材、２５ａ，２５ｂはケ
ーシングフレーム２１，２２をポストタワー２０の中間
で支持するアタッチメント、２６は横行ベース、２７は
台船である。又図１６は、一対の対称的に横行ベース３
１，３２を動かして左右同時に垂直ドレーン材を打ち込
むドレーン材打込作業船の例である。図中、３０は小型
のフロート台船３０ａを横方向に連結した台船、３１，
３２は２基の横行ベース、３３，３４は垂直ドレーン材
打込機、３５，３６は作業デッキ、３７，３８は台船３
０上の一対のレールである。Embodiments of the present invention will be described below with reference to the drawings. For the hull of the drain material driving work vessel used in this embodiment, nine small float barges which can be transported by land by truck are connected on site, and a vertical drain material driving work machine is provided with a vertically movable working deck. This is an example of performing mud construction. Figure 1
[Fig. 3] is a side view showing a drain material driving work vessel used in the example. FIG. 2 is a plan view showing the drain material driving work boat of the embodiment. FIG. 3 is an explanatory view showing a traverse-based traveling mechanism of the embodiment. FIG. 4 is an explanatory view showing an elevating device for the casing frame of the vertical drain member of the embodiment. FIG. 5: is explanatory drawing which shows the construction work of an Example. Figures 6 and 7
[Fig. 4] is a process explanatory view of the drain material placing construction of the embodiment.
FIG. 8 is an explanatory diagram showing a vertical drain material driving operation and a horizontal drain material connecting operation of the embodiment. FIG. 9 is an explanatory diagram of the lifting mechanism of the working deck of the embodiment. FIG. 10: is explanatory drawing which shows the whole process of the soft ground improvement method of an Example. 11 and 12 are explanatory views showing the drain material driving step of the embodiment. FIG. 13 is an explanatory view showing a drain material placing construction work in the boundary area of the constructed area of the embodiment. 14
FIG. 4 is an explanatory diagram showing an example in which two drain material driving devices are provided on one traverse base. FIG. 15 shows X- of FIG.
It is an X sectional view. FIG. 16 is an explanatory diagram showing a drain material driving device that symmetrically moves two traverse bases. A in the figure
Is a drain material driving work vessel used in the embodiment, 1 is a barge of the drain material driving work vessel A having a length of 10 m and a ship width of about 21 m,
Reference numeral 2 is a vertical drain material driving machine, and 2a is a vertical drain material driving machine 2 which has a length of about 9 m and is connected to four to have a length of 33 m.
Leader, 2b is a vertical drain material made of water-permeable plastic with a width of about 10 cm that can be lowered toward the ground along the leader 2a, 2c is the same vertical drain material winding drum, 2d is the vertical drain material 2b in the ground Guide casing for inserting into the ground, 2e is a propelling roller for feeding the guide casing 2d into the ground, and 2f is a vertical drain member 2b.
Anchor plate attached to the lower end of the, 2g is a work deck overhanging from the barge, 2h is a drive unit of the vertical drain material driving machine,
2i is a driver's cab provided at the opposite end of the traverse base 4, 2j is a cylinder for vertically moving the work deck 2g, and 2K is a connecting device for connecting the horizontal drain member 11 and the vertical drain member 2b. 3 is a pair of rails provided on the ship 1; 3a is an extension of the rail projecting from the side of the ship; 4 is a traverse base running on the rail; 5 is a winch device; 6 is a winch device wire; 4a Is a traverse-based rail traveling wheel, 4b is a wheel rotating shaft, 4c is a wheel drive unit, 7 is a pulley attached in the middle of the wire, 8 is an anchor for fixing the winch device 5 on land, and 10 is a length of 10 m. , A small float carrier that can carry a small truck with a width of 2.2 m, 11 is a horizontal drain material made of water-permeable plastic with a width of about 30 cm,
11a is a horizontal drain material winding drum, 12 is a metal fitting for connecting the horizontal drain material 11 and the vertical drain material 2b, and 13 is a culvert connected to the horizontal drain material 11. B is soft ground and C is dredged soil. 14 and 15 show an example of a drain work boat in which two traverse bases 26 are mounted on the front and rear vertical drain material driving machines. In the figure, 20 is a post tower that serves as a leader, 20a is a post tower guide, and 2a
1, 22 are casing frames, 21a, 22a are attachments for mounting the casing frames, 21b,
22b is a guide roller of the elevator, 23 and 24 are vertical drain materials of paper drain material, 25a and 25b are attachments for supporting the casing frames 21 and 22 in the middle of the post tower 20, 26 is a traverse base, and 27 is a barge. Is. FIG. 16 also shows a pair of symmetrical transverse bases 3.
It is an example of a drain material driving work vessel in which the vertical drain materials are simultaneously driven by moving 1 and 32. In the figure, reference numeral 30 denotes a barge in which small float barges 30a are laterally connected,
32 is two traverse bases, 33 and 34 are vertical drain material driving machines, 35 and 36 are work decks, and 37 and 38 are barges 3.
It is a pair of rails on 0.
【０００８】図１〜１３に示す実施例について説明す
る。本実施例は、泥上施工の例である。本発明のドレー
ン材打込作業船は、９基の小型フロート台船１０、３分
割されたリーダー２ａ、横行ベース４、運転室２ｉ，水
平ドレーン材巻取ドラム１１ａ，垂直ドレーン材巻取り
ドラム２ｃ等に分割され、複数のトラックに分けて現場
へ陸送される。現場で組み立てて図１，２に示すドレー
ン材打込作業船Ａを軟弱地盤Ｂの泥上に浮べ、垂直ドレ
ーン材２ｂの打ち込みと水平ドレーン材１１との接続・
敷設作業を行う。この垂直ドレーン材２ｂの打ち込み作
業と水平ドレーン材１１との接続作業の詳細は図６，
７，１１，１２に示す工程でなされる。又ドレーン材打
込作業船Ａの全体移動は図５に示すように複数のウイン
チ装置５でもってワイヤ６でもって動かす。ドレーン材
の打ち込み作業は、まず船体１をウインチ装置５でもっ
て前後左右動かして所定の作業位置に移動させる。次に
横行ベース４を船体１のレール３上に沿って横方向に移
動させ、同横行ベース４上の垂直ドレーン材打込機２を
一方の端に寄せ、水平ドレーン材１１を長く伸ばす（図
６（ａ）参照）。次に垂直ドレーン材打込機２の推進ロ
ーラ２ｅを作動させてガイドケーシング２ｄを下方向に
送り込む。ガイドケーシング２ｄの下端は垂直ドレーン
材２ｂの下端に取付けたアンカー板２ｆと当って、ガイ
ドケーシング２ｄの下降とともにアンカー板２ｆを下降
させ、ペーパードレーン材の垂直ドレーン材２ｂを巻取
りドラム２ｅから繰り出しながら下降させ、軟弱地盤Ｂ
中に深く挿入する（図８，９，６（ａ））。垂直ドレー
ン材２ｂを軟弱地盤Ｂ中に挿入した後、ガイドケーシン
グ２ｄを上昇させると、垂直ドレーン材２ｂはアンカー
板２ｆによる軟弱地盤Ｂとの抵抗で地盤中に残され、ガ
イドケーシング２ｄのみ上昇し、台船１の甲板近くまで
上昇させ、作業デッキ２ｇの作業者がハサミなどの切断
器で垂直ドレーン材２ｂの軟弱地盤Ｂから露出した部分
で切断する。これと平行して切断された軟弱地盤Ｂ内に
挿入された前回打ち込みの垂直ドレーン材２ｂの上端
を、作業デッキ２ｇで接続装置２ｋを用いて水平ドレー
ン材１１と接続金具１２でもって通水性があるように接
続する。（初回打込み時には接続作業はない）更に今回
切断された上方の垂直ドレーン材２ｂの下端にアンカー
板２ｆを取付ける（図６（ｂ），８，１１（ｄ），
（ｅ），（ｆ），（ｇ）参照）。垂直ドレーン材２ｂと
水平ドレーン材１１との接続作業を容易にする為、泥面
に近ずけるように作業デッキ２ｇの位置をシリンダー２
ｊを作動させて調整する。その後、水平ドレーン材１１
を繰り出しながら横行ベース４を左右方向横行させ、次
の打ち込み位置で停止させ、上記同様の垂直ドレーン材
２ｂの打ち込みと切断・アンカー板の取り付け・水平ド
レーン材１１との接続作業を行う（図６（ｃ），（ｄ）
参照）。以下、同様の手順で一方側から垂直ドレーン材
２ｂを０．８〜２．５ｍのピッチで打ち込み、水平ドレ
ーン材１１と接続し、暗渠１３と接続する（図６，７，
１１，１２参照）。このように、一列に複数打ち込んだ
垂直ドレーン材２ｂを接続した水平ドレーン材１１を切
離した後、船体１全体をウインチ装置５を用いて、次の
打ち込み位置まで前進させ、この位置で停船させて（図
７（ｅ，ｆ）参照）、前後同様に一方側から垂直ドレー
ン材２ｂの打ち込みと水平ドレーン材１１との接続を行
う（図７（ｇ），（ｈ）参照）。このように一列毎左右
方向に複数の垂直ドレーン材２ｂを打ち込んで、水平ド
レーン材１１と接続した後、船体１を更に前進させるこ
とをくり返して、軟弱地盤Ｂ上に多数の垂直ドレーン材
２ｂを打ち込み、水平ドレーン材１１と接続させる。こ
れによって、図１３の右側の軟弱地盤の領域のように軟
弱地盤に左右前後１〜２ｍピッチで多数打ち込んだ垂直
ドレーン材２ｂを水平ドレーン材１１でこれらを繋いで
暗渠１３まで延長し、ドレーン排水路を構築する。軟弱
地盤中の水分は垂直ドレーン材２ｂから上昇し、水平ド
レーン材１１を介して暗渠１３へ排水される。排水効率
を高めるため上載荷重として水平ドレーン材１１上に浚
泄土Ｃを投入する（図１０（ｃ）参照）。軟弱地盤Ｂの
水は垂直ドレーン材２ｂと水平ドレーン材１１とを経由
して排水され、圧密沈下を起し、軟弱地盤Ｂの地盤強度
は向上する。The embodiment shown in FIGS. 1 to 13 will be described. This example is an example of construction on mud. The drain material driving work ship of the present invention comprises nine small float pontoons 10, a divided leader 2a, a transverse base 4, a driver's cab 2i, a horizontal drain material winding drum 11a, and a vertical drain material winding drum 2c. Etc., divided into several trucks and sent to the site by land. Assembled on site, the drain material driving work vessel A shown in FIGS. 1 and 2 is floated on the mud of the soft ground B, and the vertical drain material 2b is driven and the horizontal drain material 11 is connected.
Perform laying work. Details of the work of driving the vertical drain member 2b and the work of connecting the vertical drain member 2b are shown in FIG.
This is performed in the steps shown in 7, 11, and 12. Further, the entire movement of the drain material driving work boat A is carried out by a plurality of winch devices 5 and a wire 6 as shown in FIG. In the work of driving the drain material, first, the hull 1 is moved back and forth and left and right by the winch device 5 to move to a predetermined work position. Next, the traverse base 4 is moved laterally along the rails 3 of the hull 1, the vertical drain material driving machine 2 on the traverse base 4 is moved to one end, and the horizontal drain material 11 is extended (Fig. 6 (a)). Next, the propelling roller 2e of the vertical drain material driving machine 2 is operated to feed the guide casing 2d downward. The lower end of the guide casing 2d hits the anchor plate 2f attached to the lower end of the vertical drain member 2b, and the anchor plate 2f is lowered as the guide casing 2d descends, and the vertical drain member 2b of the paper drain member is fed out from the winding drum 2e. While descending, soft ground B
Insert it deeply inside (Figs. 8, 9, 6 (a)). When the guide casing 2d is raised after inserting the vertical drain material 2b into the soft ground B, the vertical drain material 2b is left in the ground due to the resistance of the anchor plate 2f with the soft ground B, and only the guide casing 2d rises. Then, it is lifted up to near the deck of the pontoon 1, and the operator of the work deck 2g cuts with the cutter such as scissors at the portion exposed from the soft ground B of the vertical drain member 2b. The upper end of the previously driven vertical drain material 2b inserted in the soft ground B cut in parallel with this, the horizontal drain material 11 and the connection metal fitting 12 using the connection device 2k in the work deck 2g Connect as they are. (There is no connection work at the time of the first driving) Further, the anchor plate 2f is attached to the lower end of the upper vertical drain member 2b cut this time (Figs. 6 (b), 8, 11 (d),
(E), (f), (g)). In order to facilitate the connection work between the vertical drain material 2b and the horizontal drain material 11, the position of the work deck 2g is set to the cylinder 2 so as to approach the mud surface.
Activate j to adjust. After that, the horizontal drain material 11
While traversing, the traverse base 4 is traversed in the left-right direction, stopped at the next driving position, and the same vertical drain material 2b driving and cutting / anchor plate mounting / horizontal drain material 11 connecting work is performed (Fig. 6). (C), (d)
reference). Thereafter, the vertical drain material 2b is driven from one side at a pitch of 0.8 to 2.5 m by the same procedure, connected to the horizontal drain material 11 and connected to the underdrain 13 (FIGS.
11 and 12). In this way, after separating the horizontal drain member 11 to which the vertical drain members 2b driven in a row are connected, the entire hull 1 is advanced to the next driving position using the winch device 5 and stopped at this position. Similarly to the front and rear, the vertical drain material 2b is driven in and the horizontal drain material 11 is connected from the one side (see FIGS. 7 (g) and 7 (h)). In this way, by driving a plurality of vertical drain members 2b in each row in the left-right direction and connecting them with the horizontal drain members 11, the hull 1 is further advanced to repeat, and a large number of vertical drain members 2b are placed on the soft ground B. Drive and connect with the horizontal drain material 11. As a result, as in the region of the soft ground on the right side of FIG. 13, a number of vertical drain members 2b that have been driven into the soft ground at a pitch of 1 to 2 meters in the left-right and front-rear direction are connected to each other with the horizontal drain members 11 and extended to the underdrain 13 to drain the drainage. Build a road. The water in the soft ground rises from the vertical drain material 2b and is drained to the underdrain 13 via the horizontal drain material 11. In order to improve the drainage efficiency, the excavated soil C is put on the horizontal drain material 11 as an overload (see FIG. 10 (c)). The water of the soft ground B is drained through the vertical drain material 2b and the horizontal drain material 11 to cause consolidation settlement, and the ground strength of the soft ground B is improved.
【０００９】図１３は泥上施工で施工済みの領域に沿っ
て施工するときの状態を示す説明図である。ドレーン材
打込作業船Ａは施工済み領域の境界から少し離れ位置に
配置し、船体１が施工済みのドレーン材と接触しないよ
うにドレーン材打込作業船Ａを境界に沿ってウインチ装
置５で移動させる。レール３の左右の延長部に横行ベー
ス４を移動させ、垂直ドレーン材打込機２をこの境界領
域に移動させ垂直ドレーン材２ｂを境界領域に打ち込
み、施工済みの水平ドレーン材１１と接続する。このよ
うにレール３の延長部３ａを使うことで施工済みのドレ
ーン材を損傷させる事無く境界領域のドレーン材の打設
敷設の作業が出来る。又、台船１の前進が多少左右に位
置ズレしてもまたは蛇行して前進しても、横行ベース４
を横行させて精確な打ち込み位置に垂直ドレーン材打込
機２を移動させることで、垂直ドレーン材２ｂの打ち込
みは正確に出来る。又水平ドレーン材１１の領域間の接
続も容易に行える。FIG. 13 is an explanatory view showing a state when the construction is carried out along the area already constructed by the construction on the mud. The drain material driving work vessel A is arranged at a position slightly away from the boundary of the constructed area, and the drain material driving work vessel A is moved along the boundary by the winch device 5 so that the hull 1 does not come into contact with the constructed drain material. To move. The transverse base 4 is moved to the left and right extension parts of the rail 3, the vertical drain material driving machine 2 is moved to this boundary area, the vertical drain material 2b is driven into the boundary area, and the horizontal drain material 11 already installed is connected. By using the extension 3a of the rail 3 in this way, the work of placing and laying the drain material in the boundary region can be performed without damaging the drain material that has already been constructed. In addition, even if the forward movement of the pier 1 shifts slightly to the left or right or meanders forward, the traverse base 4
The vertical drain material 2b can be accurately driven by moving the vertical drain material driving machine 2 to a precise driving position. Further, the connection between the regions of the horizontal drain member 11 can be easily performed.
【００１０】図１４，１５図は、一つの横行ベース２６
の船体１の甲板周縁から突き出した部分にポストタワー
２０を立設し、これにガイド２０ａを前後方向に一対設
け、同ガイド２０ａに沿ってケーシングフレーム２１，
２２をアタッチメント２１ａ，２２ａを介して上下動自
在に取付けている。各ケーシングフレーム２１，２２内
にペーパードレーン材の垂直ドレーン材２３，２４が封
入され、その下端にはアンカー板が取付けられている。
各ケーシングフレーム２１，２２は下部のケーシング圧
入用駆動部２７，２８によって上下動され、独立して垂
直ドレーン材２３，２４を打ち込めるようになってい
る。尚、図１４の横行ベース２６の突出部には作業デッ
キ２ｇが設けられている。この図１４，１５のドレーン
材打込作業船では、垂直ドレーン材２３，２４を同時に
２本打ち込むことができる。更に図１６の如く複数の横
行ベース３１，３２を船体上に設け、横行ベース３１，
３２を互に対称的に動かして、左右の重量バランスをと
りながら、左右で複数の垂直ドレーン材を打ち込むこと
が安定して且つ作業効率よくドレーン打設を行える。
尚、本発明の軟弱地盤改良技術は泥状軟弱地盤ばかりで
なく浅海の軟弱地盤に垂直ドレーン材打込みも使用でき
るものである。14 and 15 show one transverse base 26.
A post tower 20 is erected on a portion of the hull 1 projecting from the peripheral edge of the deck, and a pair of guides 20a is provided on the post tower 20 in the front-rear direction.
22 is attached via attachments 21a and 22a so as to be vertically movable. Vertical drain members 23 and 24, which are paper drain members, are enclosed in the casing frames 21 and 22, and anchor plates are attached to the lower ends thereof.
Each of the casing frames 21 and 22 is vertically moved by lower casing press-fitting drive units 27 and 28 so that the vertical drain members 23 and 24 can be driven independently. A work deck 2g is provided on the projecting portion of the transverse base 26 shown in FIG. In the drain material driving work vessels shown in FIGS. 14 and 15, two vertical drain materials 23 and 24 can be simultaneously driven. Further, as shown in FIG. 16, a plurality of traverse bases 31, 32 are provided on the hull, and the traverse bases 31,
It is possible to drive the drains in a stable and efficient manner by moving the 32 symmetrically with respect to each other and driving a plurality of vertical drain members on the left and right while balancing the weight on the left and right.
The soft ground improvement technique of the present invention can be used not only for mud-like soft ground but also for vertical drain material implantation on soft ground in shallow water.
【００１１】[0011]
【発明の効果】以上の様に、本発明によれば、泥上・海
上から船体の台船甲板上の垂直ドレーン材打込機を横行
させながら垂直ドレーン材を打込み、しかも垂直ドレー
ン材の打ち込み・切断・アンカー板取付の作業と、水平
ドレーン材の接続作業とを並行に行うことで、施工作業
が迅速・効率的に且つ正確で容易に行え、しかも水平ド
レーン材として帯状ドレーン材を使用するので砂を使用
するものに比べて作業コストを大巾に低減できる。又作
業デッキを有するものでは、垂直ドレーン材の切断作業
と水平ドレーン材との接続作業が安全に容易に行える。
又、レールを船体の左右側面より左右方向に長く張出し
たものでは、ドレーン材打込作業船の前進作業時に於け
る左右のズレ、蛇行に対して垂直ドレーン材を精確な位
置に打ち込め、又施工済みの地との境界領域のドレーン
材の打設作業を精確に行える。As described above, according to the present invention, the vertical drain material is driven while moving the vertical drain material driving machine on the deck of the hull from the surface of the mud or the sea, and the driving of the vertical drain material is performed. -Construction work can be performed quickly, efficiently, accurately, and easily by performing the cutting / anchor plate attachment work and the horizontal drain material connection work in parallel, and the belt-shaped drain material is used as the horizontal drain material. Therefore, the work cost can be greatly reduced compared to the one using sand. Further, in the case of having the work deck, the cutting work of the vertical drain material and the connecting work with the horizontal drain material can be safely and easily performed.
Also, if the rail is extended from the left and right sides of the hull in the left- right direction, the vertical drain material can be driven into the precise position against the left and right deviations and meandering during the forward work of the drain material driving work vessel. It is possible to accurately perform the work of placing the drain material in the boundary area with the existing ground.
【図１】実施例に使用するドレーン材打込作業船を示す
側面図である。FIG. 1 is a side view showing a drain material driving work vessel used in an embodiment.
【図２】実施例のドレーン材打込作業船を示す平面図で
ある。FIG. 2 is a plan view showing a drain material driving work boat of the embodiment.
【図３】実施例の横行ベースの走行機構を示す説明図で
ある。FIG. 3 is an explanatory view showing a traverse base traveling mechanism of the embodiment.
【図４】実施例の垂直ドレーン材のケーシングフレーム
の昇降装置を示す説明図である。FIG. 4 is an explanatory view showing an elevating device for a casing frame of a vertical drain member according to the embodiment.
【図５】実施例の施工作業を示す説明図である。FIG. 5 is an explanatory view showing a construction work of the embodiment.
【図６】実施例のドレーン材打設施工の工程説明図であ
る。FIG. 6 is a process explanatory diagram of the drain material placing construction of the embodiment.
【図７】実施例のドレーン材打設施工の工程説明図であ
る。FIG. 7 is a process explanatory view of the drain material placing construction of the embodiment.
【図８】実施例の垂直ドレーン材打込作業と水平ドレー
ン材接続作業を示す説明図である。FIG. 8 is an explanatory diagram showing a vertical drain material driving operation and a horizontal drain material connecting operation according to the embodiment.
【図９】実施例の作業デッキの昇降機構の説明図であ
る。FIG. 9 is an explanatory diagram of a lifting mechanism for a work deck according to the embodiment.
【図１０】実施例の軟弱地盤改良工法の全体工程を示す
説明図である。FIG. 10 is an explanatory diagram showing the overall steps of the soft ground improvement method of the embodiment.
【図１１】実施例のドレーン材打込工程を示す説明図で
ある。FIG. 11 is an explanatory diagram showing a drain material driving step of the embodiment.
【図１２】実施例のドレーン材打込工程を示す説明図で
ある。FIG. 12 is an explanatory diagram showing a drain material driving step of the embodiment.
【図１３】実施例の施工済み領域の境界領域のドレーン
材施工作業を示す説明図である。FIG. 13 is an explanatory view showing the drain material construction work in the boundary area of the constructed area in the embodiment.
【図１４】一つの横行ベースに２基のドレーン材打込装
置を装置した例を示す説明図である。FIG. 14 is an explanatory view showing an example in which two drain material driving devices are provided on one traverse base.
【図１５】図１４のＸ−Ｘ断面図である。15 is a sectional view taken along line XX of FIG.
【図１６】横行ベースを２台対称的に動かすドレーン材
打込装置を示す説明図である。FIG. 16 is an explanatory diagram showing a drain material driving device that moves two transverse bases symmetrically.
Ａ ドレーン材打込作業船 Ｂ 軟弱地盤 Ｃ 浚渫土 １ 台船 ２ 垂直ドレーン材打込機 ２ａ リーダー ２ｂ 垂直ドレーン材 ２ｃ 垂直ドレーン材巻取りドラム ２ｄ ガイドケーシング ２ｅ 推進ローラ ２ｆ アンカー板 ２ｇ 作業デッキ ２ｈ 駆動部 ２ｉ 運転室 ３ レール ３ａ 延長部 ４ 横行ベース ４ａ 車輪 ４ｂ 車輪回動軸 ４ｃ 車輪駆動部 ５ ウインチ装置 ６ ワイヤ ７ 滑車 ８ アンカー １０ フロート台船 １１ 水平ドレーン材 １１ａ 水平ドレーン材巻取りドラム １２ 接続金具 １３ 暗渠 ２０ ポストタワー ２０ａ ガイド ２１，２２ ケーシングフレーム ２１ａ，２２ａ アタッチメント ２１ｂ，２２ｂ ガイドローラー ２３，２４ 垂直ドレーン材 ２５ａ，２５ｂ アタッチメント ２６ 横行ベース ２７ 台船 ３０ａ フロート台船 ３１，３２ 横行ベース ３３，３４ 垂直ドレーン材打込機 ３５，３６ 作業デッキ ３７，３８ レール A Drain material driving work ship B Soft ground C dredged soil One ship 2 Vertical drain material driving machine 2a leader 2b Vertical drain material 2c Vertical drain material winding drum 2d guide casing 2e Propulsion roller 2f anchor plate 2g work deck 2h drive 2i cab 3 rails 3a extension 4 traverse base 4a wheels 4b Wheel rotation axis 4c wheel drive 5 winch device 6 wires 7 pulley 8 anchor 10 float barges 11 Horizontal drain material 11a Horizontal drain material winding drum 12 Connection bracket 13 Underdrain 20 post tower 20a guide 21,22 casing frame 21a, 22a attachment 21b, 22b guide roller 23, 24 Vertical drain material 25a, 25b attachment 26 Traverse base 27 barges 30a float barge 31,32 Traverse base 33,34 Vertical drain material driving machine 35,36 working deck 37,38 rail
───────────────────────────────────────────────────── フロントページの続き (73)特許権者 591039953 フドウ技研株式会社 東京都台東区台東１丁目２番１号 (72)発明者 谷本 能寛 大阪府枚方市東中振１−18 (72)発明者 前田 忠良 千葉県船橋市北本町２−40−１−806 (72)発明者 西島 功 福岡県福岡市博多区博多駅東３丁目13番 21号 太平商工株式会社内 (72)発明者 太田 和宏 大阪府八尾市跡部北の町１丁目４番25号 錦城護謨株式会社内 (56)参考文献 特開 平１−121410（ＪＰ，Ａ) 特開 昭62−233323（ＪＰ，Ａ) 特開 昭58−178719（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E02D 3/10 103 ─────────────────────────────────────────────────── ─── Continuation of the front page (73) Patent holder 591039953 Fudou Giken Co., Ltd. 1-2-1 Taito, Taito-ku, Tokyo (72) Inventor Norihiro Tanimoto 1-18 Higashichushin, Hirakata-shi, Osaka (72) Inventor Maeda Tadayoshi 2-40-1-806 Kitahonmachi, Funabashi, Chiba Prefecture (72) Inventor Isao Nishijima 3-13-21 Higashi, Hakata Station, Hakata-ku, Fukuoka City, Fukuoka Prefecture Taihei Shoko Co., Ltd. (72) Kazuhiro Ota Osaka Prefecture 1-4-2-5, Kitano-cho, Atobe, Yao-shi, Nishiki Castle Co., Ltd. (56) Reference JP-A-1-121410 (JP, A) JP-A-62-233323 (JP, A) JP-A-58-178719 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) E02D 3/10 103
Claims (2)
材打込機を横行自在に装置し且つ長尺の通水性ある帯状
水平ドレーン材と垂直ドレーン材とを搭載したドレーン
材打込作業船を浚渫土・軟弱地盤の泥面に浮べ、同ドレ
ーン材打込作業船を船外の遠方位置に固定した複数のア
ンカーに係留ワイヤでもって係留し、同係留ワイヤをウ
インチ操作で引張・繰り出してドレーン材打込作業船を
移動できるようにし、まず同ドレーン材打込作業船を所
定打込位置まで動かして停船させ、垂直ドレーン材打込
機をその設置された甲板周縁に沿って打込位置の始端ま
で横行させて静止させ、その後垂直ドレーン材打込機を
作動させて下端にアンカー板を取付けた垂直ドレーン材
を浚渫土又は軟弱地盤中に深く打ち込み、垂直ドレーン
材を打ち込んだ後泥面上から突出した位置で垂直ドレー
ン材を切断し、その切断された未打込み側の垂直ドレー
ン材の下端にアンカー板を取付け、前記の垂直ドレーン
材の打込み作業から切断した未打込側垂直ドレーン材の
下端にアンカー板を取付ける作業までを作業に並行して
前に打込んで切断された打込み側の垂直ドレーン材の上
端部に水平ドレーン材を通水性があるように接続し、そ
の後に垂直ドレーン材打込機を甲板周縁に沿って水平ド
レーン材を引き出しながら次の左右の打ち込み位置まで
横行して静止させ、その後前記同様に垂直ドレーン材の
打込み・切断・アンカー板取付作業及び前の垂直ドレー
ン材の上端と水平ドレーン材との接続の作業を並行して
行い、その後同様に垂直ドレーン材打込機の横行・静止
作業の後の垂直ドレーン材の打込み・切断・アンカー板
取付作業及び水平ドレーン材との接続作業の平行作業を
行うことを繰り返すことで、甲板周縁に沿って水平ドレ
ーン材と接続された多数の垂直ドレーン材を一列に打ち
込んだ状態とし、その後に接続された水平ドレーン材を
切離して又は切離さないでドレーン材打込作業船をウイ
ンチ操作で次の打込列位置まで前進させて停船させ、そ
の後前記同様に垂直ドレーン材の打込み・切断・アンカ
ー板取付作業及びこの作業と並行しての水平ドレーン材
との接続作業を行った後に左右方向の次の打込み位置ま
での垂直ドレーン材打込み機の横行・静止を甲板周縁に
沿って繰り返し、この列の垂直ドレーン材打込みとこれ
と接続した水平ドレーン材の敷設を行ない、前記同様ド
レーン材打込作業船を次の打込み列位置まで前進させて
前記同様にドレーン材の打込と敷設を行うことを繰り返
して広い範囲の浚渫土・軟弱地盤に多数の垂直ドレーン
材とこれと接続された水平ドレーン材とを敷設していく
ことを特徴とする浚渫土・軟弱地盤のドレーン材打設施
工法。1. A drain material driving operation in which a vertical drain material driving machine is traversed along one peripheral edge of a deck of a ship and a long horizontal water-permeable horizontal drain material and a vertical drain material are mounted. The ship floats on the mud surface of the dredged soil / soft ground, and the work board for driving the drain material is moored with multiple anchors that are fixed at distant positions outside the ship with mooring wires, and the mooring wires are pulled and extended by winch operation. To enable movement of the drain material driving work vessel, first move the drain material driving work vessel to a predetermined driving position to stop the vessel, and then drive the vertical drain material driving machine along the periphery of the deck on which it is installed. After traversing to the beginning of the position and making it stand still, after operating the vertical drain material driving machine, the vertical drain material with the anchor plate attached to the lower end is driven deeply into the dredged soil or soft ground, and the vertical drain material is driven and then the mud The vertical drain material is cut at a position protruding from the surface, the anchor plate is attached to the lower end of the cut vertical drain material on the non-driving side, and the non-driving side vertical drain cut from the driving operation of the vertical drain material described above. Parallel to the work of attaching the anchor plate to the lower end of the material, the horizontal drain material is connected to the upper end of the vertical drain material on the driving side that was cut by driving in parallel with the work, and then vertical While pulling out the horizontal drain material along the periphery of the deck, the drain material driving machine traverses to the next left and right driving positions and is made to stand still, and then, similarly to the above, the vertical drain material driving / cutting / anchor plate mounting work and the previous vertical operation. The work of connecting the upper end of the drain material and the horizontal drain material is performed in parallel, and then the vertical drain material driving machine is traversed in the same manner, and the vertical drain material is driven after stationary work. By repeating the parallel work of disconnection / anchor plate mounting work and connection work with horizontal drain material, a number of vertical drain materials connected to the horizontal drain material along the peripheral edge of the deck are driven in a row, After that, with or without disconnecting the connected horizontal drain material, the drain material driving work ship is advanced to the next driving row position by the winch operation and stopped, and then the vertical drain material is driven and cut as described above.・ After performing the anchor plate installation work and the connection work with the horizontal drain material in parallel with this work, repeat the traverse and standstill of the vertical drain material driving machine to the next driving position in the left and right direction along the deck periphery, The vertical drain material driving of this row and the horizontal drain material connected to this row are laid, and the drain material driving work vessel is advanced to the next driving row position as described above. Similar to the above, it is characterized in that a large number of vertical drain materials and horizontal drain materials connected to this are laid on a wide range of dredged soil / soft ground by repeating implantation and laying of drain materials. Construction method of drain material for dredged soil / soft ground.
台船甲板上に設け、しかも同レールを台船の前記甲板一
周縁と直交する左右側面から左右方向に長く突出するよ
うに延長し、同レール上を走行する横行ベースを設け、
同横行ベースに垂直ドレーン材打込機を装置して横行ベ
ースをレールに沿って動かすことで垂直ドレーン材打込
機を甲板周縁に沿って台船の左右側面より外側位置まで
移動できるように横行自在にしたドレーン材打込作業船
を使用し、垂直ドレーン材を打ち込んだ施工済み領域の
境界から離れた位置で領域境界に沿ってドレーン材打込
作業船をウインチ操作で移動させながら垂直ドレーン材
の打込みと水平ドレーン材の敷設を行うとともに、垂直
ドレーン材打込機をレールの左右延長部分まで動かして
台船の左右側面を超えた境界付近位置でも垂直ドレーン
材を打ち込み、台船の左右側面と施工済み領域の境界と
の間の領域にも垂直ドレーン材を打ち込み且つ施工済み
領域の敷設した水平ドレーン材と作業中の水平ドレーン
材とを接続して垂直ドレーン材の打込みと水平ドレーン
材の敷設を広域に行う請求項１記載の浚渫土・軟弱地盤
のドレーン材打設施工法。2. The rail is arranged in a direction parallel to one peripheral edge of the deck of the ship.
Provided barge on the deck, yet the deck scratch the rail Theissen
Extending from the left and right side surfaces orthogonal to the peripheral edge so as to project in the left and right direction, and providing a traverse base that runs on the same rail,
By installing a vertical drain material driving machine on the traverse base and moving the traverse base along the rail, the vertical drain material driving machine can be traversed along the peripheral edge of the deck to the position outside the left and right side surfaces of the pier. Using a free drain material driving work vessel, move the drain material driving work vessel along the area boundary at a position away from the boundary of the constructed area where the vertical drain material has been driven, and move the vertical drain material. implantation and performs installation of horizontal drain material, implanted vertical drain material in the boundary vicinity of the position beyond the left and right sides of the barge by moving the vertical drain member driving machine to the left and right extensions of the rails, left and right sides of the barge of The vertical drain material is also driven into the area between the boundary of the constructed area and the horizontal drain material laid in the constructed area and the horizontal drain material being worked is connected. Drain material hitting 設施 method of dredged material, soft ground according to claim 1, wherein performing the laying of implantation and horizontal drain material drain member over a wide area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23499298A JP3363387B2 (en) | 1998-08-05 | 1998-08-05 | Construction method of drain material for dredged soil and soft ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23499298A JP3363387B2 (en) | 1998-08-05 | 1998-08-05 | Construction method of drain material for dredged soil and soft ground |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000054361A JP2000054361A (en) | 2000-02-22 |
| JP3363387B2 true JP3363387B2 (en) | 2003-01-08 |
Family
ID=16979460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23499298A Expired - Lifetime JP3363387B2 (en) | 1998-08-05 | 1998-08-05 | Construction method of drain material for dredged soil and soft ground |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3363387B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045812B (en) * | 2021-11-30 | 2023-04-21 | 深圳市蛇口招商港湾工程有限公司 | Soft soil foundation drainage consolidation system based on gravity |
-
1998
- 1998-08-05 JP JP23499298A patent/JP3363387B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000054361A (en) | 2000-02-22 |
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