JPH0489916A - Embedding method for already fabricated pipe - Google Patents
Embedding method for already fabricated pipeInfo
- Publication number
- JPH0489916A JPH0489916A JP20484490A JP20484490A JPH0489916A JP H0489916 A JPH0489916 A JP H0489916A JP 20484490 A JP20484490 A JP 20484490A JP 20484490 A JP20484490 A JP 20484490A JP H0489916 A JPH0489916 A JP H0489916A
- Authority
- JP
- Japan
- Prior art keywords
- soil
- casing
- auger screw
- hole
- excavated
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 8
- 239000002689 soil Substances 0.000 claims abstract description 45
- 238000009412 basement excavation Methods 0.000 claims abstract description 13
- 230000000630 rising effect Effects 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 9
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 239000004568 cement Substances 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 239000002440 industrial waste Substances 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000834 fixative Substances 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Earth Drilling (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、地中に既製杭を埋設する工法に関するもの
である。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a construction method for burying ready-made piles underground.
地中に既製杭を埋設する従来技術としては、ケーシング
と、このケーシング内に嵌挿したオーガースクリューと
、前記ケーシングの下端から突出するよう上記オーガー
スクリューの先端に設けた掘削ヘッドとで構成した掘削
機により地面から地中に向は掘削すると共に、オーガー
スクリューの軸芯に設けである通路を利用して掘削ヘッ
ドの先端から地中にセメントミルクなどの固結液を注入
しなからオーガースクリューにより掘削土壌と固結液と
を攪拌混練してフィルセメント状とし、そして上記の掘
削が所定の位置に到達すると、オーガースクリューと共
にケーシングを引き抜き、然るのち、削孔に既製杭を挿
入して埋設する。A conventional technique for burying ready-made piles underground is an excavation system that includes a casing, an auger screw inserted into the casing, and an excavation head provided at the tip of the auger screw to protrude from the lower end of the casing. The machine excavates from the ground into the ground, and at the same time, a consolidating liquid such as cement milk is injected into the ground from the tip of the excavation head using the passage provided in the axis of the auger screw. The excavated soil and solidified liquid are stirred and kneaded to form a fill cement, and when the above excavation reaches the designated position, the casing is pulled out together with the auger screw, and then a ready-made pile is inserted into the excavated hole and buried. do.
なお、上記既製杭の挿入は、固結液の未硬化の内に行な
う。Note that the above-mentioned ready-made piles are inserted while the solidification liquid is not yet hardened.
上記のような工法によると、ケーシング内の粘土質土壌
は、破砕されず塊状のまま上方に送られ、オーガースク
リューの羽根やケーシングの周壁内面に付着する。According to the construction method described above, the clay soil in the casing is not crushed but is sent upward in a lumpy state, and adheres to the blades of the auger screw and the inner surface of the peripheral wall of the casing.
このため、引き抜いたケーシング及びオーガースクリュ
ーを削孔の位置から離れた位置迄移動させ、然るのち上
記ケーシング及びオーガースクリューを逆回転させる方
法などにより付着粘土質土壌を振り落す作業が必要にな
る。Therefore, it is necessary to move the casing and auger screw that have been pulled out to a position away from the hole drilling position, and then shake off the adhered clay soil by, for example, rotating the casing and auger screw in the opposite direction.
また、掘削にともない掘削土壌と固結液との撹拌混練物
をオーガースクリューにより上方に送られ、その一部が
ケーシングの上端から削孔外に溢流し、かつ既製杭の挿
入時にも杭の容積のフィルセメントが泥土状となって溢
流するので、多量の産業廃棄物となる問題があった。In addition, during excavation, the agitated mixture of excavated soil and solidified liquid is sent upward by the auger screw, and a portion of it overflows from the upper end of the casing to the outside of the excavated hole. The problem was that the fill cement turned into mud and overflowed, resulting in a large amount of industrial waste.
そこで、この発明はケーシング外に掘削土壌を排出させ
ると共に、地上に殆ど産業廃棄物が発生しないようにし
た既製杭の埋設工法を提供することを目的とする。Therefore, an object of the present invention is to provide a method for burying ready-made piles that allows excavated soil to be discharged outside the casing and generates almost no industrial waste on the ground.
上記の目的を達成するために、この発明は下端部に大き
な貫窓を有するケーシングと、このケーシング内に嵌挿
して上記ケーシングの下端から先端の掘削ヘッドを突出
させると共に、上記貫窓の中途から上方所定の範囲のみ
に逆巻き羽根を有するオーガースクリューとで構成した
掘削機により地面から地中の所定深さ迄掘削し、掘削に
ともないケーシング内の正巻き羽根による上昇土壌と逆
巻き羽根による下降土壌との衝突によって塊状物を破砕
し、かつ圧密によって貫窓からケーシング外に土壌を押
し出しながら孔壁を圧密し、そして所定の深さ迄掘削す
るとオーガースクリューの軸芯の通路を利用して根固め
液を注入しながら掘削機を引き上げると共に、根固め液
と土壌とを撹拌混練し、次いで周辺固定液に切替えて掘
削機を引き抜き、然るのち削孔に既製杭を挿入埋設する
。In order to achieve the above object, the present invention includes a casing having a large through hole at the lower end, a cutting head that is fitted into the casing and has a distal end protruding from the lower end of the casing, and a cutting head extending from the middle of the through hole. An excavator equipped with an auger screw having reverse-wound blades only in a predetermined range above excavates from the ground to a predetermined depth, and as the excavation is carried out, the soil rises due to the forward-wound blades in the casing and the soil descends due to the reverse-wound blades. The lumps are crushed by the collision of the holes, and the soil is forced out of the casing through the through-hole and the hole wall is compacted by compaction.When the hole is excavated to a predetermined depth, the soil hardening liquid is released using the passage in the shaft of the auger screw. At the same time, the excavator is pulled up while the soil is injected, and the soil is stirred and kneaded with the root hardening solution, and then the surrounding fixing solution is switched to, the excavator is pulled out, and the ready-made piles are then inserted and buried in the drilled holes.
地面から地中への掘削にともないケーシング内の正巻羽
根による上昇土壌と逆巻き羽根による下降土壌との衝突
によって塊状物を破砕し、かつ圧密によって貫窓からケ
ーシング外に土壌を押し出しながら孔壁を圧密し、そし
て地中の所定深さ迄掘削するとオーガースクリューの軸
芯の通路を利用して根固め液を注入しながら掘削機を引
き上げると共に、根固め液と土壌とを攪拌混練し、次い
で周辺固定液に切替えて掘削機を引き抜き、然るのち、
削孔に既製杭を挿入して埋設する。During excavation from the ground into the ground, the soil that is raised by the forward-wound blades in the casing collides with the soil that is descended by the reverse-wound blades to break up the lumps, and the soil is pushed out of the casing through the through-holes by compaction, and the hole wall is crushed. After compacting and excavating to a predetermined depth underground, the excavator is pulled up while injecting the soil hardening solution using the path of the shaft of the auger screw, and the soil is stirred and kneaded, and then the surrounding area is After switching to fixative and pulling out the excavator,
Insert ready-made piles into the drilled holes and bury them.
以下、この発明に係る既製杭の埋設工法を添付図面に基
づいて説明する。Hereinafter, a method for burying ready-made piles according to the present invention will be explained based on the accompanying drawings.
図において、Ａは掘削機である。In the figure, A is an excavator.
上記の掘削機Ａは、第１図に示すように走行車１のリー
ダーマスト２にワイヤ３の巻取り、巻戻しによって昇降
するよう設けた昇降体４と、この昇降体４に上端を支持
させたケーシング５と、このケーシング５の周壁下端部
に設けた大きな貫窓６と、ケーシング５の下端から先端
の掘削ヘッド７が突出するよう上記ケーシング５内に嵌
挿して昇降体４に上端を支持させると共に、上記貫窓６
の中途から上方所定の範囲のみに逆巻き羽根８を有する
オーガースクリュー９とで構成されている。As shown in FIG. 1, the above-mentioned excavator A includes an elevating body 4 provided on a leader mast 2 of a traveling vehicle 1 so as to be raised and lowered by winding and unwinding a wire 3, and an elevating body 4 having an upper end supported. The casing 5 has a large through hole 6 provided at the lower end of the peripheral wall of the casing 5, and the excavation head 7 at the tip of the casing 5 is inserted into the casing 5 so that it protrudes from the lower end, and the upper end is supported on the elevating body 4. At the same time, the above-mentioned through-hole 6
The auger screw 9 has reverse winding blades 8 only in a predetermined range above from the middle of the auger screw 9.
なお、オーガースクリュー９の軸芯には、通路１０が設
けである。Note that a passage 10 is provided in the axis of the auger screw 9.
まず、地面の掘削位置にケーシング５を建て込み、垂直
を確認したのち、第２図に示すようにケーシング５と共
にオーガースクリュー９をドライブしながら地中に向は
掘削する。First, the casing 5 is placed in the excavation position on the ground, and after confirming the verticality, the casing 5 and the auger screw 9 are driven while excavating into the ground as shown in FIG.
上記掘削にともないケーシング５内のオーガースクリュ
ー９の正巻き羽根による上昇土壌は、逆巻き羽根８の部
分に進入するよう押し上げられ、上記押し上げられた土
壌は、逆巻き羽根８により下降する。As the excavation is performed, the soil lifted up by the forward-wound blades of the auger screw 9 in the casing 5 is pushed up to enter the reverse-wound blades 8, and the pushed up soil is lowered by the reverse-wound blades 8.
その結果、上昇土壌と下降土壌との衝突によって塊状物
を破砕すると共に、衝突にともなう圧密によって貫窓６
からケーシング５外に土壌を押し出しながら削孔１１の
孔壁を圧密する。As a result, the collision between the rising soil and the descending soil breaks up the lumps, and the consolidation caused by the collision causes the through-holes to 6.
The hole wall of the drilled hole 11 is consolidated while pushing the soil out of the casing 5.
そして、第３図に示すように地中の所定深さ（支持層）
迄掘削すると、ケーシング５と共にオーガースクリュー
９を引き上げながら、上記オ−ガースクリユー９の上端
に接続したホース（図示省略）から通路１０をへて根固
め液（富配合のセメントミルクなど）Ｓを注入し、上記
根固め液と土壌とをオーガースクリュー９の回転により
攪拌混練し、次いで周辺固定液（ｊ！１固め液Ｓよりも
薄い富配合のセメントミルクなど）Ｓ′に切替えて第４
図から第５図に示すようにケーシング５と共にオーガー
スクリュー９を引き抜く。Then, as shown in Figure 3, a predetermined depth underground (supporting layer)
When the excavation is completed, while pulling up the auger screw 9 together with the casing 5, a root hardening solution (such as rich blended cement milk) S is injected through a passage 10 from a hose (not shown) connected to the upper end of the auger screw 9. , the above-mentioned root hardening solution and soil are stirred and kneaded by the rotation of the auger screw 9, and then the peripheral fixing solution (such as rich blended cement milk, which is thinner than j!1 hardening solution S) is switched to S'.
As shown in FIG. 5, the auger screw 9 is pulled out together with the casing 5.
然るのち、第６図に示すように削孔１１に既製杭Ｂを挿
入して埋設する。Thereafter, the ready-made pile B is inserted into the drilled hole 11 and buried as shown in FIG.
以上のように、この発明に係る既製杭の埋設工法によれ
ば、正巻き羽根による上昇土壌と逆巻き羽根による鋒下
土壌との衝突によって貫窓からケーシング外に掘削土壌
を押し出しながら削孔の壁を圧密するので、埋設杭周囲
の地盤を改良することができる。As described above, according to the method for burying ready-made piles according to the present invention, the excavated soil is pushed out of the casing through the through window by the collision of the rising soil by the forward-wound blades and the soil under the pile by the reverse-wound blades, while Since the soil is consolidated, the ground around the buried piles can be improved.
また、上昇土壌と鋒下土壌との衝突によって塊状物を破
砕するので貫窓からケーシング外にスムースに土壌を押
し出すことができると共に、注入液と土壌との撹拌混練
によるフィルセメント化に際し混入塊状物による問題を
なくすることができる。In addition, the collision between the rising soil and the soil under the ground crushes the lumps, making it possible to smoothly push the soil out of the casing through the through-hole. The problem caused by this can be eliminated.
さらに、掘削土壌中に粘土質が混入していても貫窓から
押し出されるので、ケーシングやオーガースクリューに
付着し、かつ手間のかかる餘去が不要になる。Furthermore, even if clay is mixed in the excavated soil, it is pushed out through the through-hole, so there is no need to remove it from the casing or auger screw, which is a time-consuming process.
また、掘削土壌のケーシング外への押し出しにともない
ケーシング及びオーガースクリューを引き抜いた際、地
上への排土が殆どないため、産業廃棄物の発生もない。Further, when the casing and auger screw are pulled out as the excavated soil is pushed out of the casing, there is almost no soil discharged onto the ground, so no industrial waste is generated.
図面はこの発明に係る既製杭の埋設工法を示すもので、
第１図は掘削機の側面図、第２図から第６図迄は既製杭
の埋設工程を示す縦断正面図である。
Ａ・・・・・・掘削機、 Ｂ・・・・・・既製杭
、１・・・・・・走行車、 ２・・・・・・リー
ダーマスト、３・・・・・・ワイヤ、 ４・・
・・・・昇降体、５・・・・・・ケーシング、 ６・
・・・・・貫窓、７・・・・・・ヘッド、 ８
・・・・・・逆巻き羽根、９・・・・・・オーガースク
リュー
１０・・・・・・通路、 １１・・・・・・削
孔、Ｓ・・・・・・根固め液、 Ｓ′・・・・・・
周辺固定液。The drawing shows the method of burying ready-made piles according to this invention.
FIG. 1 is a side view of the excavator, and FIGS. 2 to 6 are vertical front views showing the process of burying ready-made piles. A: Excavator, B: Ready-made pile, 1: Traveling vehicle, 2: Leader mast, 3: Wire, 4・・・
... Elevating body, 5 ... Casing, 6.
...Passhole, 7...Head, 8
... Reverse winding blade, 9 ... Auger screw 10 ... Passage, 11 ... Hole drilling, S ... Root hardening liquid, S'・・・・・・
Peripheral fixative.
Claims (1)
ケーシング内に嵌挿して上記ケーシングの下端から先端
の掘削ヘッドを突出させると共に、上記貫窓の中途から
上方所定の範囲のみに逆巻き羽根を有するオーガースク
リューとで構成した掘削機により地面から地中の所定深
さ迄掘削し、掘削にともないケーシング内の正巻き羽根
による上昇土壌と逆巻き羽根による下降土壌との衝突に
よって塊状物を破砕し、かつ圧密によって貫窓からケー
シング外に土壌を押し出しながら孔壁を圧密し、そして
所定の深さ迄掘削するとオーガースクリューの軸芯の通
路を利用して根固め液を注入しながら掘削機を引き上げ
ると共に、根固め液と土壌とを撹拌混練し、次いで周辺
固定液に切替えて掘削機を引き抜き、然るのち削孔に既
製杭を挿入埋設する既製杭の埋設工法。(1) A casing having a large through-hole at the lower end, a cutting head that is inserted into the casing and has a tip protruding from the lower end of the casing, and a reverse winding blade is installed only in a predetermined range above from the middle of the through-hole. Excavating from the ground to a predetermined depth using an excavator configured with an auger screw, and as the excavation is carried out, the lumps are crushed by collision between the rising soil by forward-wound blades in the casing and the descending soil by reverse-wound blades, Then, the soil is pushed out of the casing through the through-hole and the hole wall is compacted, and when the hole is excavated to a predetermined depth, the excavator is pulled up while injecting the soil hardening solution using the passage in the shaft of the auger screw. A method for burying ready-made piles, in which the root hardening solution and soil are stirred and kneaded, then the surrounding fixing solution is switched to, the excavator is pulled out, and the ready-made piles are then inserted and buried in the excavated holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20484490A JPH0718164B2 (en) | 1990-07-30 | 1990-07-30 | Buried construction method for ready-made piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20484490A JPH0718164B2 (en) | 1990-07-30 | 1990-07-30 | Buried construction method for ready-made piles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0489916A true JPH0489916A (en) | 1992-03-24 |
| JPH0718164B2 JPH0718164B2 (en) | 1995-03-01 |
Family
ID=16497331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20484490A Expired - Fee Related JPH0718164B2 (en) | 1990-07-30 | 1990-07-30 | Buried construction method for ready-made piles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0718164B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5423636A (en) * | 1992-12-10 | 1995-06-13 | Kencho Kobe Co., Ltd. | Cement soil apparatus of underground borer |
| US6471445B2 (en) * | 2000-01-20 | 2002-10-29 | Compagnie Du Sol | Rotary displacement piling equipment |
| JP2008297752A (en) * | 2007-05-30 | 2008-12-11 | Taisei Corp | Pile burying method |
| JP2021031915A (en) * | 2019-08-22 | 2021-03-01 | 株式会社日水コン | Underground buried object floating prevention method and underground buried object floating prevention structure |
-
1990
- 1990-07-30 JP JP20484490A patent/JPH0718164B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5423636A (en) * | 1992-12-10 | 1995-06-13 | Kencho Kobe Co., Ltd. | Cement soil apparatus of underground borer |
| US6471445B2 (en) * | 2000-01-20 | 2002-10-29 | Compagnie Du Sol | Rotary displacement piling equipment |
| JP2008297752A (en) * | 2007-05-30 | 2008-12-11 | Taisei Corp | Pile burying method |
| JP2021031915A (en) * | 2019-08-22 | 2021-03-01 | 株式会社日水コン | Underground buried object floating prevention method and underground buried object floating prevention structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0718164B2 (en) | 1995-03-01 |
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