JPH0257610B2 - - Google Patents
Info
- Publication number
- JPH0257610B2 JPH0257610B2 JP18387785A JP18387785A JPH0257610B2 JP H0257610 B2 JPH0257610 B2 JP H0257610B2 JP 18387785 A JP18387785 A JP 18387785A JP 18387785 A JP18387785 A JP 18387785A JP H0257610 B2 JPH0257610 B2 JP H0257610B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- rubble foundation
- rubble
- weight body
- foundation
- 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
Links
- 238000000034 method Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000010276 construction Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Underground Or Underwater Handling Of Building Materials (AREA)
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、防波堤や岸壁や護岸等の構築に際
し、水中の捨石基礎の天端面を締め固め均す水中
捨石基礎均し工法に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an underwater rubble foundation leveling method for compacting and leveling the top surface of an underwater rubble foundation when constructing a breakwater, quay wall, seawall, etc.
「従来の技術」
従来、かかる均し工法として各種の工法が提案
されているが、重錘を上下動させて捨石基礎の天
端面を鎮圧する重錘式均し工法が現在のところ最
も実用的かつ経済的で広く実施されている。``Conventional technology'' Various methods have been proposed as such leveling methods, but the weight-type leveling method, in which the top surface of the rubble foundation is compressed by moving a weight up and down, is currently the most practical. It is economical and widely implemented.
その一つとして、本出願人は特公昭56−12652
号公報に開示されているものを既に提供してい
る。これは、鋼材によつて角柱形の櫓状に組んだ
縦長の重錘を用い、この櫓状重錘を、クレーン船
のクレーンブームに吊りワイヤーによつて吊持し
たまま捨石基礎の天端面まで吊り降ろし、吊りワ
イヤーによつて櫓状重錘を上下動させてその下端
面で天端面を鎮圧するものである。 As one of them, the present applicant is
We have already provided what is disclosed in the publication. This uses a vertically elongated weight made of steel in the shape of a prismatic oar, and the oar-shaped weight is suspended from the crane boom of a crane ship by a hanging wire until it reaches the top of the rubble foundation. A tower-shaped weight is moved up and down by a hanging wire, and its lower end presses down on the top end.
「発明が解決しようとする問題点」
しかし、このような重錘による鎮圧のみでは、
水深が深くなると充分な圧密効果を発揮すること
ができなかつた。``Problems that the invention seeks to solve'' However, with only suppression using such a weight,
At deeper water depths, sufficient consolidation effects could not be achieved.
本発明の目的は、捨石基礎を、水深が深くなつ
ても充分に締め固めることができるようにするこ
とにある。 An object of the present invention is to enable a rubble foundation to be sufficiently compacted even in deep water.
「問題点を解決するための手段」
本発明の工法では、重錘による鎮圧工程前に、
下端に突棒を突設した縦長の重錘体をクレーンブ
ーム等に吊持したまま、その突棒を捨石基礎に突
き刺して該重錘体を揺動し、捨石基礎を締め固め
る。"Means for solving problems" In the construction method of the present invention, before the suppression process using a weight,
A vertically elongated weight body with a protruding rod protruding from its lower end is suspended from a crane boom or the like, and the protruding rod is thrust into the rubble foundation to swing the weight body to compact the rubble foundation.
「作用」
突棒を捨石基礎に突き刺したまま揺動すること
により、捨石層の奥深くまで沈下力を付与し、捨
石相互の間隙を縮めて圧密できる。一旦、このよ
うに圧密した後、重錘体による鎮圧作用をするこ
とにより、その圧密効果は高められる。``Operation'' By swinging the protruding rod into the rubble foundation, it applies sinking force deep into the rubble layer, reducing the gaps between the rubble stones and compacting them. Once the material is compacted in this way, the compaction effect is enhanced by applying a suppressing action using a weight body.
「実施例」
以下に本発明の一実施例を図面を参照して詳細
に説明する。``Example'' An example of the present invention will be described in detail below with reference to the drawings.
先ず、本発明の工法の実施に使用される重錘体
について第３〜５図を参照に説明すると、この重
錘体１は、中空ケーシング２の下端に重錘ヘツド
３を固着するとともに、該重錘ヘツド３に突棒ア
ツセンブリ４を着脱自在に取り付けている。中空
ケーシング２は、複数本の鋼管５を分離可能に連
結、つまり互いの鍔部６をボルト・ナツトで接合
して構成されている。鋼管５の内部相互は、その
隔壁７に穿設された連通孔８を介して連通し、ま
た中空ケーシング２の下端部（最下位の鋼管５の
下端部）には注排水弁９、上端部（最下位の鋼管
５の上端部）には排気口１０が設けられている。
鋼管５相互の連結は、現場において例えば第６図
に示すようにクレーン船１１の船体より吊り金具
１２を突設し、これに、水中に没入させた下側の
鋼管５の上端部を支持し、また上側の鋼管５をク
レーンブーム等に吊持した状態で行う。最上位の
鋼管５の上端には、重錘体１全体を吊持するため
の複数個の吊りピース１３が固着されている。 First, the weight body used in carrying out the construction method of the present invention will be explained with reference to FIGS. A protruding rod assembly 4 is detachably attached to a weight head 3. The hollow casing 2 is constructed by separably connecting a plurality of steel pipes 5, that is, by joining each other's flanges 6 with bolts and nuts. The interiors of the steel pipes 5 communicate with each other through communication holes 8 bored in their partition walls 7, and a fill/drain valve 9 is provided at the lower end of the hollow casing 2 (lower end of the lowest steel pipe 5), and a drain valve 9 is provided at the upper end. An exhaust port 10 is provided at the upper end of the lowest steel pipe 5.
The steel pipes 5 are connected to each other at the site by, for example, installing a hanging fitting 12 protruding from the hull of a crane ship 11 as shown in FIG. 6, and supporting the upper end of the lower steel pipe 5 immersed in the water. , and with the upper steel pipe 5 suspended on a crane boom or the like. A plurality of hanging pieces 13 for suspending the entire weight body 1 are fixed to the upper end of the uppermost steel pipe 5.
重錘ヘツド３は、方形なハウジング１４内に屑
鉄（砂鉄）等の重量物１５を詰め込んだもので、
この重錘ヘツド３と最下位の鋼管５の下端部とは
補強リブ１６によつて強固に連結（溶接）されて
いる。 The weight head 3 is a rectangular housing 14 in which a heavy object 15 such as scrap iron (iron sand) is packed.
The weight head 3 and the lower end of the lowest steel pipe 5 are firmly connected (welded) by a reinforcing rib 16.
突棒アツセンブリ４は、上面が開口して上記ハ
ウジング１４の外側に嵌脱自在に嵌合させること
ができる箱体１７内を肉厚鋼板１８によつて上下
に仕切り、その下側の室にコンクリート１９を充
填するとともに、この肉厚鋼板１８の下面中央
に、箱体１７の底板を貫通する鋳鋼製の比較的長
い下端尖鋭な突棒２０を突設（溶接）したもので
ある。この突棒２０は箱体１７の底板にも溶接さ
れている。箱体１７には複数個の取付孔２１が穿
設され、突棒アツセンブリ４は、箱体１７をハウ
ジング１４に嵌合させ、取付孔２１を通じてボル
ト２２をハウジング１４のねじ孔に螺合すること
により、重錘ヘツド３に着脱自在に取り付けるこ
とができる。 The protruding rod assembly 4 has a box body 17 that is open at the top and can be removably fitted to the outside of the housing 14, and is partitioned into upper and lower parts by a thick steel plate 18, and a chamber below the box body 17 is made of concrete. 19, and at the center of the lower surface of the thick steel plate 18, a relatively long projecting rod 20 made of cast steel and having a sharp lower end is protruded (welded) to penetrate the bottom plate of the box body 17. This protruding rod 20 is also welded to the bottom plate of the box body 17. A plurality of mounting holes 21 are bored in the box body 17 , and the protruding rod assembly 4 fits the box body 17 into the housing 14 and screws the bolt 22 into the screw hole of the housing 14 through the mounting hole 21 . This allows it to be detachably attached to the weight head 3.
このような構成の重錘体１を用いて本発明の工
法は次ぎのように実施する。 Using the weight body 1 having such a configuration, the construction method of the present invention is carried out as follows.
第１及び第２図において、重錘ヘツド３に突棒
アツセンブリ４を取り付け、中空ケーシング２を
クレーン船１１のクレーンブーム２３にワイヤー
２４によつて吊持し、またこの中空ケーシング２
内に注排水口９から注水する。この注水は、その
水位が海面よりも高くなるまで行い、中空ケーシ
ング２自体も重錘として機能させる。この状態で
ワイヤー２４を操作して重錘体１全体を落下さ
せ、突棒２０を捨石基礎２５に突き刺した後、重
錘体１を上昇させることなく突棒２０を突き刺し
たままクレーンブーム２３を旋回させて重錘体１
を繰り返し揺動させる。この揺動によつて突棒２
０は捨石を掻き回すような運動をするとともに、
重錘ヘツド３は、捨石基礎２５を上側から押し下
げるように揺動するもので、その周囲の捨石は沈
下力を付与されて締め固められる。その沈下量
は、中空ケーシング２の上端部の外周面に目盛２
６を刻設しておくことにより、海面上において目
測できるもので、それが計画値に達したならば、
重錘体１全体を上昇させて突棒２０を捨石基礎２
５から引抜き、捨石基礎２５の別の個所を同様に
して締め固める。かかる突棒２０による締め固め
後、突棒アツセンブリ４を重錘ヘツド３から外
し、重錘体１を捨石基礎２５上において繰り返し
落下させることにより、その天端面を重錘ヘツド
３で鎮圧して計画高さに均らすものである。 1 and 2, a protrusion rod assembly 4 is attached to a weight head 3, a hollow casing 2 is suspended from a crane boom 23 of a crane ship 11 by a wire 24, and the hollow casing 2 is
Water is poured into the tank from the water inlet 9. This water injection is performed until the water level becomes higher than the sea level, and the hollow casing 2 itself also functions as a weight. In this state, the entire weight body 1 is dropped by operating the wire 24, and the protrusion bar 20 is pierced into the rubble foundation 25. After that, the crane boom 23 is moved with the protrusion bar 20 stuck without raising the weight body 1. Rotate the weight body 1
Rock repeatedly. This oscillation causes the protrusion rod 2 to
0 moves like stirring rubble, and
The weight head 3 swings so as to push down the rubble foundation 25 from above, and the rubble around it is given a sinking force and compacted. The amount of subsidence is determined by the scale 2 on the outer circumferential surface of the upper end of the hollow casing 2.
By marking 6, it is possible to visually measure it on the sea surface, and if it reaches the planned value,
Raise the entire weight body 1 and attach the protruding rod 20 to the rubble foundation 2
5, and compacted another part of the rubble foundation 25 in the same way. After compaction using the protrusion rod 20, the protrusion rod assembly 4 is removed from the weight head 3, and the weight body 1 is repeatedly dropped on the rubble foundation 25, so that the top end surface is compressed by the weight head 3 and the plan is completed. It equalizes the height.
なお、重錘体１は第７図に示すように中空ケー
シング２を一本の鋼管で構成したものでもよく、
また突棒２０を重錘ヘツド３に一体に突設したも
のでもよい。また、上記実施例では、突棒２０に
よる捨石基礎の締め固めとその後の鎮圧とを同じ
重錘体１で行つたが、鎮圧は別に用意された重錘
で行つてもよい。 Incidentally, the weight body 1 may be composed of a hollow casing 2 made of a single steel pipe as shown in FIG.
Alternatively, the protruding rod 20 may be integrally provided on the weight head 3. Further, in the above embodiment, the same weight body 1 is used to compact the rubble foundation using the protruding rod 20 and to press down afterwards, but the compacting may be performed using a separately prepared weight.
「発明の効果」
以上述べた通り本発明の工法によれば、重錘に
よる捨石基礎の鎮圧均し前に、重錘体の下端の突
棒を捨石基礎に突き刺して重錘体を揺動し、捨石
に沈下力を付与して締め固めるため、水深の深い
捨石基礎でも効果的に圧密できる。"Effects of the Invention" As described above, according to the construction method of the present invention, before the rubble foundation is leveled by the weight, the protruding rod at the lower end of the weight is pierced into the rubble foundation to swing the weight. Since it applies sinking force to the rubble and compacts it, even rubble foundations in deep water can be effectively compacted.
図面第１図及び第２図は本発明の工法の一実施
例を示す側面図及び正面図、第３，４及び５図は
それにおいて使用する重錘体の一例の断面図、そ
の下端部の斜視図及び上端部の斜視図、第６図は
中空ケーシングを構成する鋼管の連結作業例を示
す側面図、第７図及び第８図はそれぞれ重錘体の
他の例を示す断面図である。
１……重錘体、２……中空ケーシング、３……
重錘ヘツド、４……突棒アツセンブリ、２０……
突棒、２３……クレーンブーム、２５……捨石基
礎。
Figures 1 and 2 are side and front views showing an embodiment of the construction method of the present invention, and Figures 3, 4, and 5 are cross-sectional views of an example of a weight body used in the construction method, and a diagram of the lower end thereof. A perspective view and a perspective view of the upper end, FIG. 6 is a side view showing an example of the connection work of the steel pipes constituting the hollow casing, and FIGS. 7 and 8 are sectional views showing other examples of the weight body, respectively. . 1... Weight body, 2... Hollow casing, 3...
Weight head, 4... Protrusion rod assembly, 20...
Protrusion rod, 23... Crane boom, 25... Rubble foundation.
Claims (1)
中捨石基礎均し工法において、上記重錘による鎮
圧工程前に、下端に突棒を突設した縦長の重錘体
をクレーンブーム等に吊持したまま、その突棒を
上記捨石基礎に突き刺して該重錘体を揺動し、捨
石基礎を締め固めることを特徴とする水中捨石基
礎均し工法。1. In the underwater rubble foundation leveling method in which the top surface of the rubble foundation is compressed using a weight, a vertically long weight body with a protruding bar at the lower end is suspended from a crane boom, etc. before the above-mentioned crushing process using the weight. An underwater rubble foundation leveling method characterized in that, while being held, the protruding rod is thrust into the rubble foundation and the weight body is oscillated to compact the rubble foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18387785A JPS6245828A (en) | 1985-08-23 | 1985-08-23 | Leveling work for rubble-mound under water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18387785A JPS6245828A (en) | 1985-08-23 | 1985-08-23 | Leveling work for rubble-mound under water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6245828A JPS6245828A (en) | 1987-02-27 |
| JPH0257610B2 true JPH0257610B2 (en) | 1990-12-05 |
Family
ID=16143391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18387785A Granted JPS6245828A (en) | 1985-08-23 | 1985-08-23 | Leveling work for rubble-mound under water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6245828A (en) |
-
1985
- 1985-08-23 JP JP18387785A patent/JPS6245828A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6245828A (en) | 1987-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |