JPH01190820A - Device for removing slime in bottom of pile hole - Google Patents
Device for removing slime in bottom of pile holeInfo
- Publication number
- JPH01190820A JPH01190820A JP1453388A JP1453388A JPH01190820A JP H01190820 A JPH01190820 A JP H01190820A JP 1453388 A JP1453388 A JP 1453388A JP 1453388 A JP1453388 A JP 1453388A JP H01190820 A JPH01190820 A JP H01190820A
- Authority
- JP
- Japan
- Prior art keywords
- pile hole
- slime
- pipe
- tremie
- tube
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 abstract description 5
- 235000013351 cheese Nutrition 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract description 2
- 238000010168 coupling process Methods 0.000 abstract description 2
- 238000005859 coupling reaction Methods 0.000 abstract description 2
- 238000002347 injection Methods 0.000 abstract 1
- 239000007924 injection Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000002445 nipple Anatomy 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Underground Or Underwater Handling Of Building Materials (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、場所打ちコンクリート基礎杭を造成する場合
における掘削した杭孔底部に溜るスライムの除去装置に
関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for removing slime that accumulates at the bottom of an excavated pile hole when creating cast-in-place concrete foundation piles.
（従来の技術とその問題点）
従来、掘削した杭孔底部に溜るスライムを除去するには
、トレミー管を利用して水を噴射させたり、別に杭孔内
に挿入したホース等によってジェット噴射を行って、杭
孔底部のスライムを撹拌すること等によってスライムの
沈澱状態を防止する等のスライム除去方法が行われてい
るが、これらの従来のスライム除去方法は、いずれも余
分な手数を要するにもかかわらず、効果が今−歩十分で
はなく、実用的ではないという問題点があった。(Conventional technology and its problems) Conventionally, in order to remove slime that accumulates at the bottom of an excavated pile hole, water is sprayed using a tremie tube, or jet spray is applied using a separate hose inserted into the pile hole. There are slime removal methods that prevent the sedimentation of slime by stirring the slime at the bottom of the pile hole, but these conventional slime removal methods require extra steps and However, there was a problem that the effect was not sufficient and it was not practical.
（問題点を解決するための手段）
上述の問題点を解決するため本発明においては、コンク
リート打設用トレミー管の下端部外周に環状の管を設け
ると共に、この管に複数個のノズルをそれぞれほぼ放射
方向に向けて配置し、この環状の管に圧力水を送給でき
るようにして杭孔底部のスライム除去装置を構成する。(Means for Solving the Problems) In order to solve the above-mentioned problems, in the present invention, an annular pipe is provided on the outer periphery of the lower end of the tremie pipe for concrete pouring, and a plurality of nozzles are installed in each of the pipes. The annular pipe is arranged in a substantially radial direction so that pressurized water can be supplied to the annular pipe to constitute a slime removal device at the bottom of the pile hole.
（作 用）
上述のように本発明は、場所打ち杭の造成において従来
からコンクリートを打設するために必要としていたトレ
ミー管を利用してスライム除去装置を構成しミ トレミ
ー管を杭孔内に挿入してコンクリートを打設する直前に
、トレミー管の下端部より放射方向に圧力水を噴射して
杭孔底部に溜っているスライムを吹きとばし、その直後
にコンクリートを打設するようにしたから、従来の工法
に余分な手数を追加するこ七なく、簡単かつ容易に、し
かも有効にスライムを除去することができる。(Function) As described above, the present invention utilizes the tremie pipe, which has been conventionally required for pouring concrete in the construction of cast-in-place piles, to configure a slime removal device, and inserts the tremie pipe into the pile hole. Immediately before inserting the pile and placing concrete, pressurized water is injected in a radial direction from the bottom end of the tremie pipe to blow away the slime that has accumulated at the bottom of the pile hole, and immediately after that, concrete is placed. , slime can be easily and effectively removed without adding any extra steps to conventional methods.
したがって本発明装置は簡単でありながら有効な作用効
果があり、しかも余分な工数を必要とせず、杭孔内に挿
入した鉄筋能があっても邪魔になることがない。Therefore, the device of the present invention is simple yet effective, does not require extra man-hours, and does not get in the way even if there is a reinforcing bar inserted into the pile hole.
（実施例）
以下、図面について本発明の一実施例を説明する。図中
１は本発明に係る最下端に位置するトレミー管である。(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. In the figure, 1 is a tremie tube located at the lowest end according to the present invention.
本実施例においては第２図に詳細に示すように、トレミ
ー管１の下部外周に環状溝１８を形成すると共に、この
環状溝１ａの２ケ所（１８０°離れた２位置）より上方
に向って切欠した縦溝１ｂを形成し、環状溝ｌａ内に第
３図に示すような環状の管２を設ける。第３図の管２は
、半円弧状に形成したものを管端にそ′れぞれ設けたフ
ランジ２ａを介してボルト結合するようにしである。そ
してこの環状の管２の円周８等分位置にはそれぞれノズ
ル３が配設してあり、これらのノズル３の噴射方向はほ
ぼ放射方向に指向するようにしである。In this embodiment, as shown in detail in FIG. 2, an annular groove 18 is formed on the outer periphery of the lower part of the tremie tube 1, and an annular groove 18 is formed upward from two positions (two positions 180° apart) of the annular groove 1a. A notched vertical groove 1b is formed, and an annular tube 2 as shown in FIG. 3 is provided within the annular groove la. The tube 2 shown in FIG. 3 is formed into a semicircular arc shape and is bolted together via flanges 2a provided at each end of the tube. Nozzles 3 are disposed at eight equal positions on the circumference of this annular tube 2, and the jetting direction of these nozzles 3 is oriented substantially in the radial direction.
本実施例の場合は、第３図（ｂ）に示すように正確な放
射方向線Ａに対してノズル３の噴射方向線Ｂは平面的に
１５°傾斜しており、また立面的には第４図に示すよう
に、水平線Ｃに対してノズル３の噴射方向線りは１５°
傾斜している。In the case of this embodiment, as shown in FIG. 3(b), the jetting direction line B of the nozzle 3 is inclined by 15 degrees in plane with respect to the correct radial direction line A, and As shown in Fig. 4, the jetting direction of the nozzle 3 is 15° with respect to the horizontal line C.
It is sloping.
また半円弧状の管２の中央部にはそれぞれ上方に向って
ニップル４が突設されている。Further, nipples 4 are provided in the center of each semicircular arc-shaped tube 2 to project upward.
そして第１図に示すように、トレミー管１の環状溝１ａ
内に環状の管２を嵌めこんで、そのフランジ２ａを介し
てボルト５およびナツト６により固定すると共に、ニッ
プル４にそれぞれホース７を接続し、これらのホース７
間にチーズ８を接続し、このチーズ８にカップリング９
を介してホース１０を接続する。As shown in FIG. 1, the annular groove 1a of the tremie tube 1
An annular tube 2 is fitted into the tube and fixed with bolts 5 and nuts 6 via the flange 2a, and hoses 7 are connected to the nipples 4, respectively.
Connect cheese 8 between them, and connect coupling 9 to this cheese 8.
Connect the hose 10 via.
つぎに上述のように構成した本発明装置の使用方法を第
５図〜第７図について説明する。Next, a method of using the apparatus of the present invention constructed as described above will be explained with reference to FIGS. 5 to 7.
図中１１は地盤、１２はこの地盤１１を掘削して形成し
た杭孔、１２ａはその拡張部、１２ｂは杭孔の底面、１
３はスライム、１４は杭孔１２内に挿入した鉄筋ＩＬ１
５は杭孔１２の上部に設けたケーシング、１６は最下位
のトレミー管１に継ぎ足した上位のトレミー管である。In the figure, 11 is the ground, 12 is a pile hole formed by excavating this ground 11, 12a is its extension, 12b is the bottom of the pile hole, 1
3 is the slime, 14 is the reinforcing bar IL1 inserted into the pile hole 12
5 is a casing provided above the pile hole 12, and 16 is an upper tremie pipe added to the lowest tremie pipe 1.
第５図に示すように杭孔１２の掘削が完了したならば検
尺を行って、鉄筋能１４を建て込んでから、本発明装置
を有するトレミー管１，１６を杭孔１２内に挿入し、第
６図に示すようにトレミー管１の下端が底面１２ｂの近
くに位置する状態で、地盤１１上に設けた高圧ポンプ１
７を運転して、ホースｌ０５７等を介して環状の管２に
設けたノズル３より高圧水（例えば２０〜１００ｋｇ／
ｃｍ２）を底面１２ｂに沿って放射状に噴射する。As shown in FIG. 5, once the excavation of the pile hole 12 is completed, the length of the pile hole 12 is measured, the reinforcing bars 14 are installed, and the tremie pipes 1 and 16 having the device of the present invention are inserted into the pile hole 12. As shown in FIG.
7, high-pressure water (e.g. 20-100kg/
cm2) is sprayed radially along the bottom surface 12b.
このようにすれば底面１２ｂ上に溜っていたスライム１
３は第６図に示すように吹き上げられるから、次いで第
７図に示すようにトレミー管１６，１を介して生コンク
リート１８を打設する。In this way, the slime 1 accumulated on the bottom surface 12b
3 is blown up as shown in FIG. 6, then fresh concrete 18 is poured through the tremie pipes 16 and 1 as shown in FIG.
この場合スライム１３は底面１２ｂより浮き上った状態
にあるため、杭孔１２の底面１２ｂ上にスライムＩ３が
残留して杭の支持力を滅するおそれはなくなる。なお第
７図の１９はトレミー管１６の上端に接続したコンクリ
ートホッパーで、２０はそのホッパー１９に生コンクリ
ート１８を供給するシュートである。In this case, since the slime 13 is in a state floating above the bottom surface 12b, there is no possibility that the slime I3 remains on the bottom surface 12b of the pile hole 12 and destroys the supporting force of the pile. Note that 19 in FIG. 7 is a concrete hopper connected to the upper end of the tremie pipe 16, and 20 is a chute for supplying fresh concrete 18 to the hopper 19.
（発明の効果）
上述のように本発明は、場所打ち杭の造成において従来
からコンクリートを打設するために必要としていたトレ
ミー管を利用してスライム除去装置を構成し、トレミー
管を杭孔内に挿入してコンクリートを打設する直前に、
トレミー管の下端部より放射方向に圧力水を噴射して杭
孔底部に溜っているスライムを吹きとばし、その直後に
コンクリートを打設するようにしたから、従来の工法に
余分な手数を追加することなく、簡単かつ容易に、しか
も有効にスライムを除去することができる。(Effects of the Invention) As described above, the present invention configures a slime removal device using a tremie tube, which has conventionally been required for pouring concrete in the construction of cast-in-place piles, and uses the tremie tube to move the tremie tube into the pile hole. Just before inserting the concrete into the
Pressure water is injected radially from the bottom end of the tremie pipe to blow away the slime that has accumulated at the bottom of the pile hole, and concrete is poured immediately after that, adding extra steps to the conventional construction method. Slime can be removed simply, easily, and effectively.
したがって本発明装置は、簡単でありながら有効な作用
効果があり、しかも余分な工数を必要とせず、杭孔内に
挿入した鉄筋能があっても邪魔になることがないから、
本発明によれば、スライムの残留による支持力の減少分
が少ない場所打ち杭が容易に得られるという効果が得ら
れる。Therefore, the device of the present invention has simple yet effective effects, does not require extra man-hours, and does not interfere with reinforcing bars inserted into the pile hole.
According to the present invention, it is possible to easily obtain a cast-in-place pile with less reduction in bearing capacity due to residual slime.
第１図（ａ）は本発明装置を付したトレミー管の正面図
、
同図（ｂ）はその側面図、
第２図（ａ）は第１図のトレミー管のみの正面図、・
同図（ｂ）はその側面図、
第３図（ａ）は本発明装置の環状の管の立面図、同図（
ｂ）はその平面図、
第４図は第３図（ｂ）のＩＶ−ＩＶ断面図、第５図〜第
７図は本発明装置の作用説明図である。
１・・・トレミー管 ２・・・環状の管３・・・
ノズル ４・・・ニップル７．１０・・・ホ
ース １１・・・地盤１２・・・杭孔
１２ｂ・・・底面１３・・・スライム １
４・・・鉄筋能１５・・・ケーシング １６・・
・トレミー管１８・・・生コンクリート
第１
図
（ｂ）
（ａ）
第２図
（ｂ）
第３図
（ａ）FIG. 1(a) is a front view of the tremie tube equipped with the device of the present invention, FIG. 2(b) is a side view thereof, and FIG. 2(a) is a front view of only the tremie tube shown in FIG.
3(b) is a side view thereof, FIG. 3(a) is an elevational view of the annular tube of the device of the present invention, and FIG.
b) is a plan view thereof, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1... Tremy tube 2... Annular tube 3...
Nozzle 4... Nipple 7. 10... Hose 11... Ground 12... Pile hole
12b...Bottom 13...Slime 1
4...Reinforcement capacity 15...Casing 16...
・Tremy pipe 18...Ready-mixed concrete Figure 1 (b) (a) Figure 2 (b) Figure 3 (a)
Claims (1)
の管を設けると共に、この管に複数個のノズルをそれぞ
れほぼ放射方向に向けて配置し、この環状の管に圧力水
を送給できるようにしたことを特徴とする杭孔底部のス
ライム除去装置。1. A ring-shaped pipe is provided on the outer periphery of the lower end of the tremie pipe for concrete pouring, and a plurality of nozzles are arranged in this pipe, each facing approximately in the radial direction, so that pressure water can be supplied to this ring-shaped pipe. A device for removing slime from the bottom of a pile hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63014533A JPH0619136B2 (en) | 1988-01-27 | 1988-01-27 | Slime removal device at the bottom of pile holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63014533A JPH0619136B2 (en) | 1988-01-27 | 1988-01-27 | Slime removal device at the bottom of pile holes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01190820A true JPH01190820A (en) | 1989-07-31 |
| JPH0619136B2 JPH0619136B2 (en) | 1994-03-16 |
Family
ID=11863781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63014533A Expired - Lifetime JPH0619136B2 (en) | 1988-01-27 | 1988-01-27 | Slime removal device at the bottom of pile holes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0619136B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288139A (en) * | 2022-08-03 | 2022-11-04 | 中化学建设投资集团有限公司 | Clear hole system of mud for bored concrete pile construction |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173218A (en) * | 1984-02-14 | 1985-09-06 | Kajima Corp | Method and apparatus for settling object into ground |
| JPS61162624A (en) * | 1985-01-07 | 1986-07-23 | N I T:Kk | Underground stable supporting layer and forming method thereof |
-
1988
- 1988-01-27 JP JP63014533A patent/JPH0619136B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173218A (en) * | 1984-02-14 | 1985-09-06 | Kajima Corp | Method and apparatus for settling object into ground |
| JPS61162624A (en) * | 1985-01-07 | 1986-07-23 | N I T:Kk | Underground stable supporting layer and forming method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115288139A (en) * | 2022-08-03 | 2022-11-04 | 中化学建设投资集团有限公司 | Clear hole system of mud for bored concrete pile construction |
| CN115288139B (en) * | 2022-08-03 | 2023-12-22 | 中化学建设投资集团有限公司 | Mud hole cleaning system for cast-in-place pile construction |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0619136B2 (en) | 1994-03-16 |
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