JPH0229811B2 - - Google Patents
Info
- Publication number
- JPH0229811B2 JPH0229811B2 JP58144997A JP14499783A JPH0229811B2 JP H0229811 B2 JPH0229811 B2 JP H0229811B2 JP 58144997 A JP58144997 A JP 58144997A JP 14499783 A JP14499783 A JP 14499783A JP H0229811 B2 JPH0229811 B2 JP H0229811B2
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- leveling
- compacting
- underwater rubble
- underwater
- 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
- 238000005056 compaction Methods 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims 2
- 238000010276 construction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/10—Placing gravel or light material under water inasmuch as not provided for elsewhere
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
- Foundations (AREA)
- Revetment (AREA)
Description
【発明の詳細な説明】
本発明は、防波堤等の構築に際しケーソンある
いはブロツク等を設置する水中基礎の天端を均し
締め固める水中捨石基礎の均し締め固め工法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for leveling and compacting an underwater rubble foundation, which levels and compacts the top of an underwater foundation on which a caisson or block is to be installed when constructing a breakwater or the like.
防波堤等の構築に際しケーソンあるいはブロツ
ク等を設置するには通常、計画区域を浚渫して捨
石を投入し、その捨石基礎の天端を均し締め固め
るようにしている。 To install caissons or blocks when constructing a breakwater, etc., the planned area is usually dredged, rubble is thrown in, and the top of the rubble foundation is leveled and compacted.
この均し締め固めを行うには従来多くの場合、
潜水夫が水中に入つて手作業によつて行つてい
た。しかし水中作業であるため作業性が悪く、か
つ手作業であるため充分なる締め固めが行えない
欠点があつた。 Conventionally, in many cases, to perform this leveling and compaction,
A diver went into the water and did it manually. However, because the work was done underwater, the workability was poor, and because it was done by hand, sufficient compaction could not be achieved.
そこで特公昭53−42990号公報、特公昭56−
12652号公報にみられるように、水上より捨石基
礎の天端の均し締め固めを行う工法が提案され
た。 Therefore, Special Publication No. 53-42990, Special Publication No. 56-
As seen in Publication No. 12652, a construction method was proposed in which the top of the rubble foundation was leveled and compacted from above the water.
それ等の公報記載の技術によれば、下端に錘板
を取付けた櫓体をクレーン船で吊り下げ、その櫓
体を水中捨石基礎の天端面に昇降することにより
天端を圧密するようにしている。しかし長い尺で
重量の大きな櫓体を水中で吊り上げ、昇降するの
はかなりの困難を伴い必ずしも能率的な工法とは
いえない。また櫓体を急激に昇降して水中捨石基
礎の天端を動圧でもつて圧密することは櫓体およ
びそれを吊り下げているワイヤロープに与える衝
撃が大きくて実質上不可能であり、水中捨石基礎
の圧密は櫓体の自重による静圧により行つてい
た。このため水中捨石基礎の締め固めかが必ずし
も充分に行われなかつた。 According to the technology described in these publications, a turret body with a weight plate attached to the lower end is suspended by a crane ship, and the turret body is raised and lowered onto the top surface of an underwater rubble foundation, thereby consolidating the top end. There is. However, hoisting a long, heavy tower in the water and moving it up and down is quite difficult and cannot necessarily be said to be an efficient construction method. In addition, it is virtually impossible to rapidly raise and lower the turret to consolidate the top of the underwater rubble foundation using dynamic pressure, as this would cause a large impact on the turret and the wire ropes suspending it. Consolidation of the foundation was carried out using static pressure due to the weight of the turret. For this reason, the compaction of underwater rubble foundations was not always done sufficiently.
また、特開昭49−127439号公報にみられるよう
に、下端にベースブロツクを取付けたガイドパイ
プに案内されるドロツプハンマーをウインチで巻
上げ、高所より落下させてベースブロツクに打撃
を与えて水中捨石基礎を搗固める公報では、前記
のような理由で水中捨石基礎の締め固めが必ずし
も充分に行われなかつた。 In addition, as seen in Japanese Patent Application Laid-Open No. 49-127439, a drop hammer guided by a guide pipe with a base block attached to the lower end is hoisted up with a winch, and dropped from a high place to strike the base block and create underwater rubble. In the publications on compaction of foundations, compaction of underwater rubble foundations was not necessarily carried out sufficiently for the reasons mentioned above.
また、特公昭56−11807号公報にみられるよう
に、下端に錘板を取付けた櫓体の上端に電動式振
動機を取付け、その振動機により錘板に振動を与
えて水中捨石基礎を圧密する工法も提案されてい
る。 Additionally, as seen in Japanese Patent Publication No. 56-11807, an electric vibrator is attached to the upper end of the tower body with a weight plate attached to the lower end, and the vibrator vibrates the weight plate to consolidate the underwater rubble foundation. A construction method has also been proposed.
しかしこの技術による場合は、電動式振動機に
より長尺で大重量の櫓体そのものを振動させねば
ならず、このため振動機としてはきわめて大容量
のものを要し、また櫓体も振動衝撃に耐える特殊
構造のものを使用せねばならない。また櫓体を吊
り下げているワイヤロープと電動式振動機との間
にバネを介在させねばならない等振動機自体も特
殊な構造のものとなる。 However, with this technology, the long and heavy tower body itself must be vibrated using an electric vibrator, which requires an extremely large capacity vibrator, and the tower body is also susceptible to vibration shock. A special structure that can withstand it must be used. Furthermore, the vibrator itself has a special structure, requiring a spring to be interposed between the wire rope suspending the tower body and the electric vibrator.
本発明は従来の水中捨石基礎の均し締め固め工
法の前記欠点を解消すべくなされたもので、本発
明によれば、ケーソンあるいはブロツク等を設置
する水中捨石基礎の天端を均し締め固める工法に
おいて、ケーソンあるいはブロツク等を設置する
計画区域を浚渫し、その浚渫底面に捨石を投入
し、作業船をアンカーにより繋累し、作業船に設
置したクレーンのジブからワイヤロープによりハ
ンマーを支持した吊りリーダを吊り下げ、その吊
りリーダにより上端にパイルキヤツプが取付けら
れ下端に締め固め用プレートを備えた長尺な鋼管
をその軸線方向に移動可能にして支持し、また吊
りリーダの下方位置において作業船より突出する
キヤツチホークにより鋼管をその軸線方向に移動
可能にガイドするようにし、ハンマーを作動して
鋼管の上端に取付けたパイルキヤツプ上面を打撃
することにより鋼管を介して締め固め用プレート
により水中捨石基礎の天端を均し締め固めし、水
中捨石基礎を所定量均し締め固め終えればクレー
ンを操作して鋼管を少し吊り上げ、船を繋累して
いるアンカーロープをウインチで操作して船を移
動させ、前記操作を繰り返すことにより順次水中
捨石基礎の天端を均し締め固めている。 The present invention has been made to solve the above-mentioned drawbacks of the conventional method of leveling and compacting underwater rubble foundations.According to the present invention, the top of an underwater rubble foundation on which a caisson or block is to be installed can be leveled and compacted. In the construction method, the planned area where the caissons or blocks are to be installed is dredged, rubble is poured into the bottom of the dredged area, a work boat is tied up with an anchor, and the hammer is supported by a wire rope from the jib of the crane installed on the work boat. A hanging leader is hung, and the hanging leader supports a long steel pipe with a pile cap attached to the upper end and a compaction plate at the lower end, movable in the axial direction, and work is carried out at a position below the hanging leader. The steel pipe is movably guided in the axial direction by a catch hawk that protrudes from the ship, and a hammer is activated to strike the top surface of the pile cap attached to the upper end of the steel pipe, which allows the compaction plate to move underwater rubble through the steel pipe. After leveling and compacting the top of the foundation, and completing the specified amount of underwater rubble foundation leveling and compacting, a crane is operated to lift the steel pipe a little, and a winch is used to operate the anchor rope that connects the ship to the ship. By moving the foundation and repeating the above operations, the top of the underwater rubble foundation is successively leveled and compacted.
したがつて、従来の単に櫓又はドロツプハンマ
ーの自重よる動圧で水中捨石基礎の天端を圧密す
るものに比べ、よりしつかりと水中捨石基礎を均
し締め固めすることができ、また従来の均し締め
固め用プレートと共に櫓を振動させるもののよう
に特殊構造の櫓や特殊構造の振動機を要せず、杭
打ち等に使用している通常のハンマーでもつて水
中捨石基礎の均し締め固めを行うことができる。 Therefore, compared to the conventional method of simply compacting the top of an underwater rubble foundation using dynamic pressure due to the weight of a turret or drop hammer, it is possible to level and compact the underwater rubble foundation more firmly. Unlike those that vibrate the turret together with a compaction plate, there is no need for a specially constructed turret or a special vibrator, and it is possible to level and compact underwater rubble foundations using a normal hammer used for piling, etc. It can be carried out.
以下、図面を参照し本発明の実施例につき説明
する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図において防波堤等を構築する計画区域を
砂礫層天端Ｓまで浚渫する。その浚渫された砂礫
層天端Ｓに計画区域の全域にわたり捨石Ｔを投入
する。その際、捨石Ｔの高さは締め固めの分だけ
計画高さよりも高くしておく。 In Figure 1, the planned area for constructing a breakwater etc. will be dredged to the top S of the gravel layer. Rubble stones T will be thrown into the top S of the dredged gravel layer throughout the entire planned area. At that time, the height of the rubble T should be made higher than the planned height by the amount of compaction.
作業船１を計画区域に自航あるいは曳航し、作
業船１を船の前後左右の４箇所でアンカー２，…
…により繋累する。作業船１はクレーン３を備え
ており、このクレーン３のジブ４は旋回台により
旋回するとともに俯仰する。ジブ４の先端からウ
インチにより繰り出し巻取られるワイヤロープ５
が吊下しており、このワイヤロープ５の先端に設
けたフツク６に吊りリーダ７が吊下げられてい
る。吊りリーダ７はハンマー８を支持していると
共に、吊りリーダ７は上端にパイルキヤツプ１０
が取付けられ下端に締め固め用プレート１１を備
えた長尺な鋼管１２をその軸線方向に移動可能に
して支持している。ハンマー８は例えばエアー作
動の従来公知のハンマーを使用することができ
る。鋼管１２内にはその自重を増すために第２図
に示すようにコンクリート１３が中詰めされてい
る。吊りリーダ７の下方の位置において作業船１
の船首からキヤツチホーク１４が水平に突出して
おり、このキヤツチホーク１４により鋼管１２が
その軸線方向に移動可能にガイドされるようにな
つている。 The work boat 1 is self-propelled or towed to the planned area, and anchors 2,...
It is connected by... The work boat 1 is equipped with a crane 3, and the jib 4 of the crane 3 is rotated by a swivel base and raised and raised. A wire rope 5 is paid out and wound up by a winch from the tip of the jib 4.
is suspended, and a hanging leader 7 is suspended from a hook 6 provided at the tip of this wire rope 5. The hanging leader 7 supports a hammer 8, and the hanging leader 7 has a pile cap 10 at its upper end.
A long steel pipe 12 with a compaction plate 11 attached to the lower end is supported movably in its axial direction. As the hammer 8, for example, a conventionally known pneumatic hammer can be used. The steel pipe 12 is filled with concrete 13 as shown in FIG. 2 to increase its own weight. The work boat 1 is located below the hanging leader 7.
A catch hawk 14 projects horizontally from the bow of the ship, and the steel pipe 12 is movably guided by the catch hawk 14 in its axial direction.
作業に際しては作業船１をアンカー２，……で
繋累し、クレーン３を操作して締め固め用プレー
ト１１が水中捨石基礎Ｔの天端面に着床するまで
鋼管１２を吊り下ろす。その際、鋼管１２を打ち
込むことができるように吊りリーダ７のパイルキ
ヤツプ支持面とパイルキヤツプ１０との間に所定
の間隔をあけておく。そして、作業船１に設けた
高圧エアー源よりフレキシブルパイプ９を介して
エアーハンマー８に高圧エアーを供給することに
よりエアーハンマー８を作動し、パイルキヤツプ
１０をエアーハンマー８で打撃することにより鋼
管１２を介して締め固め用プレート１１により水
中捨石基礎Ｔの天端を均し締め固める。 During the work, the work boat 1 is tied up with anchors 2, . . . and the crane 3 is operated to suspend the steel pipe 12 until the compaction plate 11 lands on the top surface of the underwater rubble foundation T. At this time, a predetermined distance is left between the pile cap support surface of the hanging leader 7 and the pile cap 10 so that the steel pipe 12 can be driven into the pile cap. Then, the air hammer 8 is actuated by supplying high pressure air to the air hammer 8 from a high pressure air source provided in the work boat 1 via the flexible pipe 9, and the pile cap 10 is struck by the air hammer 8, thereby removing the steel pipe 12. The top of the underwater rubble foundation T is leveled and compacted using the compaction plate 11 via the compaction plate 11.
所定量の締め固めを終えれば船１を繋累してい
る４個のアンカー２，……のうち例えば船尾側
（図において左側）のアンカー２，２のロープを
所定量繰り出し、船首側（図において右側）のア
ンカー２，２のロープをウインチで巻取り船１を
所定量前進（図において右側）される。船１の移
動を終えれば船１を４本のアンカー２，……で繋
累した状態で再び前述の態様で水中捨石基礎Ｔの
天端の均し締め固め作業を行う。また船１を左右
に移動させるには一方の舷側のアンカー２，２の
ロープを所定量繰り出し、他方の舷側のアンカー
２，２のロープをウインチ巻取り船１を所定量左
方向あるいは右方向へ移動させる。このようにし
て計画区域の全域の水中捨石基礎Ｔの均し締め固
めを行う。 After completing a predetermined amount of compaction, for example, out of the four anchors 2 that tie the ship 1 together, let out a predetermined amount of rope from the anchors 2, 2 on the stern side (left side in the figure), and tighten the rope on the bow side ( The ropes of the anchors 2, 2 on the right side in the figure are wound up with a winch, and the ship 1 is moved forward by a predetermined amount (on the right side in the figure). After the movement of the ship 1 is completed, the leveling and compaction work of the top of the underwater rubble foundation T is performed again in the manner described above with the ship 1 tied together with the four anchors 2, . . . . In addition, to move the ship 1 to the left or right, the ropes of the anchors 2, 2 on one side are let out by a predetermined amount, and the ropes of the anchors 2, 2 on the other side are reeled in with a winch to move the ship 1 a predetermined amount to the left or right. move it. In this way, the underwater rubble foundation T throughout the planned area will be leveled and compacted.
以上説明したように本発明では下端に締め固め
用プレートを設けた鋼管をハンマーにより打撃す
ることにより水中捨石基礎をしつかりと締め固め
することができ、また装置自体も特殊構造の櫓体
や特殊構造で大容量の振動機等を要しないもので
ある。さらに、杭打ち等に使用している通常のハ
ンマーを用いることができ、便利である。 As explained above, in the present invention, an underwater rubble foundation can be firmly compacted by hitting a steel pipe with a compaction plate at the lower end with a hammer. The structure does not require a large-capacity vibrator or the like. Furthermore, it is convenient because a normal hammer used for pile driving etc. can be used.
第１図は本発明に係る水中捨石基礎の均し締め
固め工法を実施した状態を示す側面図、第２図は
第１図の−線断面図である。
１……作業船、２……アンカー、３……クレー
ン、４……ジブ、５……ワイヤロープ、６……フ
ツク、７……吊りリーダ、８……エアーハンマ
ー、９……フレキシブルホース、１０……パイル
キヤツプ、１１……締め固め用プレート、１２…
…鋼管、１３……中詰めセメント。
FIG. 1 is a side view showing a state in which the leveling and compaction construction method for an underwater rubble foundation according to the present invention has been implemented, and FIG. 2 is a sectional view taken along the line -- in FIG. 1. 1... Work boat, 2... Anchor, 3... Crane, 4... Jib, 5... Wire rope, 6... Hook, 7... Hanging leader, 8... Air hammer, 9... Flexible hose, 10... Pile cap, 11... Compaction plate, 12...
...Steel pipe, 13...Filled with cement.
Claims (1)
捨石基礎の天端を均し締め固める工法において、
ケーソンあるいはブロツク等を設置する計画区域
を浚渫し、その浚渫底面に捨石を投入し、作業船
をアンカーにより繋累し、作業船に設置したクレ
ーンのジブからワイヤロープによりハンマーを支
持した吊りリーダを吊り下げ、その吊りリーダに
より上端にパイルキヤツプが取付けられ下端に締
め固め用プレートを備えた長尺な鋼管をその軸線
方向に移動可能にして支持し、また吊りリーダの
下方位置において作業船より突出するキヤツチホ
ークにより鋼管をその軸線方向に移動可能にガイ
ドするようにし、ハンマーを作動して鋼管の上端
に取付けたパイルキヤツプ上面を打撃することに
より鋼管を介して締め固め用プレートにより水中
捨石基礎の天端を均し締め固めし、水中捨石基礎
を所定量均し締め固め終えればクレーンを操作し
て鋼管を少し吊り上げ、船を繋累しているアンカ
ーロープをウインチで操作して船を移動させ、前
記操作を繰り返すことにより順次水中捨石基礎の
天端を均し締め固めていくことを特徴とする水中
捨石基礎の均し締め固め工法。1. In the method of leveling and compacting the top of the underwater rubble foundation on which a caisson or block, etc. will be installed,
Dredge the planned area where the caisson or block will be installed, put rubble at the bottom of the dredged area, tie the work boat with an anchor, and attach a hanging leader with a hammer supported by a wire rope from the jib of the crane installed on the work boat. The suspension leader supports a long steel pipe with a pile cap attached to the upper end and a compaction plate at the lower end, movable in the axial direction, and protrudes from the work boat at a position below the suspension leader. The steel pipe is guided movably in the axial direction by a catch hawk, and a hammer is actuated to strike the top surface of the pile cap attached to the upper end of the steel pipe, which causes the compaction plate to move through the steel pipe to the top of the underwater rubble foundation. After leveling and compacting the edges and leveling and compacting the underwater rubble foundation to a specified amount, we operated a crane to lift the steel pipe a little, and used a winch to operate the anchor ropes that tied the ship together to move the ship. A method for leveling and compacting an underwater rubble foundation, characterized in that the top of the underwater rubble foundation is leveled and compacted in sequence by repeating the above operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14499783A JPS6037312A (en) | 1983-08-10 | 1983-08-10 | Leveling and compacting work of underwater rubble foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14499783A JPS6037312A (en) | 1983-08-10 | 1983-08-10 | Leveling and compacting work of underwater rubble foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6037312A JPS6037312A (en) | 1985-02-26 |
| JPH0229811B2 true JPH0229811B2 (en) | 1990-07-03 |
Family
ID=15375064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14499783A Granted JPS6037312A (en) | 1983-08-10 | 1983-08-10 | Leveling and compacting work of underwater rubble foundation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6037312A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922014B (en) * | 2021-04-09 | 2022-04-12 | 中信国安建工集团有限公司 | Continuous multi-span plant foundation structure and construction method |
| CN113684785B (en) * | 2021-08-23 | 2023-06-16 | 中交(天津)疏浚工程有限公司 | Construction process of pile foundation wharf |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49127439A (en) * | 1973-04-06 | 1974-12-06 | ||
| JPS5117339A (en) * | 1974-08-02 | 1976-02-12 | Kanai Hiroyuki | BOKYO RINGU |
-
1983
- 1983-08-10 JP JP14499783A patent/JPS6037312A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49127439A (en) * | 1973-04-06 | 1974-12-06 | ||
| JPS5117339A (en) * | 1974-08-02 | 1976-02-12 | Kanai Hiroyuki | BOKYO RINGU |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6037312A (en) | 1985-02-26 |
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