JPS6160927B2 - - Google Patents
Info
- Publication number
- JPS6160927B2 JPS6160927B2 JP17485980A JP17485980A JPS6160927B2 JP S6160927 B2 JPS6160927 B2 JP S6160927B2 JP 17485980 A JP17485980 A JP 17485980A JP 17485980 A JP17485980 A JP 17485980A JP S6160927 B2 JPS6160927 B2 JP S6160927B2
- Authority
- JP
- Japan
- Prior art keywords
- pile body
- pile
- tip
- pipe
- gap
- 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
- 239000003795 chemical substances by application Substances 0.000 claims description 24
- 239000002689 soil Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008961 swelling Effects 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は建築土木等で用いる杭固定方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for fixing piles used in construction and civil engineering.
(発明が解決しようとする問題点)
われわれは、膨脹剤にて杭本体の先端および中
程を数箇所拡大させる支持力と摩擦力に優れた杭
の固定工法を提案している。ところが中空状の杭
本体内全体に膨脹剤を入れると、高価な膨脹剤が
大量に必要で、とても高価な杭となつて採算が合
わない欠点があつた。また、杭本体内全体に膨脹
剤を充填すると、杭の強度性に問題があつた。(Problems to be Solved by the Invention) We are proposing a method for fixing piles that has excellent bearing capacity and frictional force by expanding the tip and middle portions of the pile body in several places using an expanding agent. However, when an expanding agent is put inside the entire hollow pile body, a large amount of expensive expanding agent is required, resulting in a very expensive pile that is not profitable. Furthermore, when the entire pile body was filled with an expansion agent, there was a problem with the strength of the pile.
(問題点を解決するための手段)
本発明杭固定工法は、先端及び中程の周部数箇
所に複数個のスリツトを形成してなる中空状杭本
体の先端開口部を杭先金具で閉塞し、この杭先金
具の方から杭本体を土中の目的の深さまで入れた
後、杭本体内に杭本体よりも小径のパイプを挿入
することによつてこの小径パイプと杭本体との間
に隙間を形成し、該隙間内に膨脹剤を充填すると
ともに小径パイプ内にコンクリートを充填し、時
間の経過によつて杭先及び杭本体の中程に形成し
た前記スリツト部分を複数箇所拡大させるもので
ある。(Means for Solving Problems) The pile fixing method of the present invention uses a pile end fitting to close the opening at the end of a hollow pile body, which has a plurality of slits formed at several locations around the end and middle. After inserting the pile body into the soil from the pile end fitting to the desired depth, insert a pipe with a smaller diameter than the pile body into the pile body to create a gap between this small diameter pipe and the pile body. A method in which a gap is formed, an expanding agent is filled in the gap, and a small diameter pipe is filled with concrete, and the slits formed at the tip of the pile and in the middle of the pile body are enlarged in multiple locations over time. It is.
(実施例)
以下本発明を図面に示す実施例に基いて説明す
る。1は金属或いは合成樹脂材等からなる中空状
の杭本体で、この杭本体1の先端1a及び中程1
bの周部にスリツト2a,2b,2cを複数箇所
形成する。スリツト2a…はそれぞれ杭本体1の
周部に2本以上形成しておくことが望ましい。ス
リツトの長さ及び数は後述する膨脹剤の膨脹性能
等に応じて設定する。これらスリツトは軸方向に
沿つて形成するか、軸方向に対して傾斜状に形成
するのがよいが中程のスリツト2b,2c等は軸
方向に対して略直角状に形成してもよい。3は杭
先金具で杭本体1の先端開口部に嵌め閉塞する。
杭先金具3は先の尖つた砲弾形の金具であること
が望ましい。なんとなれば、杭本体1を土中に打
込むとき、杭本体内に土が入り込まないこと及び
打込み易いことが重要だからである。(Example) The present invention will be described below based on an example shown in the drawings. Reference numeral 1 denotes a hollow pile body made of metal or synthetic resin material, and the tip 1a and the middle 1 of this pile body 1 are
A plurality of slits 2a, 2b, and 2c are formed around the circumference of b. It is desirable to form two or more slits 2a on the circumference of the pile body 1, respectively. The length and number of slits are determined depending on the expansion performance of the expansion agent, which will be described later. These slits are preferably formed along the axial direction or inclined to the axial direction, but the middle slits 2b, 2c, etc. may be formed substantially at right angles to the axial direction. Reference numeral 3 denotes a pile end metal fitting which is fitted into the opening at the end of the pile body 1 to close it.
It is desirable that the pile tip metal fitting 3 is a bullet-shaped metal fitting with a pointed tip. This is because when driving the pile body 1 into the soil, it is important that the soil does not get into the pile body and that it is easy to drive.
このように杭本体1及び杭先金具3を形成し、
杭本体1の先端開口部に杭先金具3を嵌めた後、
この杭本体1を土中に打設するか、埋設する。埋
設の場合、掘削機等にてあらかじめ所定の深さに
設けた削孔に杭本体を埋設し、その後は削孔を埋
め戻す。また、埋設の場合、杭本体1の先端は杭
先金具を用いず、あらかじめ閉口していてもよ
い。 In this way, the pile body 1 and the pile tip fitting 3 are formed,
After fitting the pile tip fitting 3 into the tip opening of the pile body 1,
This pile body 1 is driven into the soil or buried. In the case of burying, the pile body is buried in a hole drilled at a predetermined depth using an excavator or the like, and then the hole is backfilled. Moreover, in the case of burial, the tip of the pile main body 1 may be closed in advance without using a pile tip metal fitting.
杭本体1を土中の目的の深さに入れた後、杭本
体1内に杭本体よりも小径のパイプ4を挿入す
る。パイプ4を挿入することによつて、このパイ
プと杭本体1との間に隙間5を形成する。この隙
間5内に膨脹剤6を入れる。膨脹剤6とは、水で
練り混ぜて目的の孔や筒内に充填しておけば硬
化、膨脹して計画的に目的物に亀裂膨脹を生じさ
せるもので、例えば、小野田セメント株式会社の
商品名ブライスター等である。 After putting the pile body 1 into the soil to a desired depth, a pipe 4 having a smaller diameter than the pile body is inserted into the pile body 1. By inserting the pipe 4, a gap 5 is formed between the pipe and the pile body 1. An expanding agent 6 is put into this gap 5. Expanding agent 6 is an agent that, when mixed with water and filled into a target hole or cylinder, hardens and expands to cause planned cracking and expansion in the target object.For example, a product manufactured by Onoda Cement Co., Ltd. The name is Bleister etc.
このように杭本体とパイプとの間に生じた隙間
5内に膨脹剤6を注入した後、約15〜24時間経過
すると、杭本体1の先端1a及び中程に設けたス
リツト部分2a…が膨脹剤の硬化膨脹によつて拡
大されるのである。膨脹剤6は隙間5内にて2〜
3倍に膨脹する。杭先及び中程が複数箇所節状に
膨脹拡大するため、引抜き抵抗が大となると共に
先端支持力も増大する。 After approximately 15 to 24 hours have elapsed after the expansion agent 6 was injected into the gap 5 created between the pile body 1 and the pipe, the slit portions 2a provided at the tip 1a and the middle of the pile body 1... It is expanded by the curing and expansion of the swelling agent. The expansion agent 6 is in the gap 5 from 2 to
Expands 3 times. Since the tip and middle of the pile expand and expand in a knot-like manner at multiple locations, the pull-out resistance increases and the tip supporting force also increases.
尚、杭本体1とパイプ4との間に形成された隙
間5に膨脹剤6を注入充填しておくとともにパイ
プ4内にはコンクリートを充填しておく。従つ
て、内部をコンクリート柱とする強固な杭体を得
ることができる。 Incidentally, an expanding agent 6 is injected into the gap 5 formed between the pile body 1 and the pipe 4, and the pipe 4 is filled with concrete. Therefore, a strong pile body with a concrete column inside can be obtained.
また、膨脹剤6の隙間5への充填は、スリツト
2a…を形成している部分のみになし、その他の
部分にはコンクリートを充填していてもよい。更
に膨脹剤とコンクリートとをミツクスして隙間5
内に注入することも考えられる。 Further, the expanding agent 6 may be filled into the gaps 5 only in the portions forming the slits 2a, and the other portions may be filled with concrete. Furthermore, mix the expanding agent and concrete to create a gap 5.
It is also possible to inject it into the body.
膨脹剤は杭本体の内部で時間を経てある程度固
化するとともに膨脹する。従つて、各スリツトの
部分から外部へ流出する量は少なく、膨脹剤が団
塊となつて各スリツトの部分で杭本体の径を拡大
することになる。 The expansion agent solidifies to some extent and expands inside the pile body over time. Therefore, the amount of the expanding agent flowing out from each slit is small, and the expanding agent forms a lump and expands the diameter of the pile body at each slit.
(発明の効果)
上記の如くなる本発明工法は、次の各効果を奏
する。(Effects of the Invention) The construction method of the present invention as described above has the following effects.
杭本体の数箇所を拡大させる膨脹剤は杭本体
とパイプとの隙間のみに充填すればよいため、
膨脹剤は少量で済み経済的安価に摩擦力支持力
に優れた杭を得ることができる。 The expansion agent that expands several parts of the pile body only needs to be filled into the gap between the pile body and the pipe.
Only a small amount of the swelling agent is required, and it is possible to obtain piles with excellent frictional support at an economical cost.
杭本体内に挿入するパイプ内にコンクリート
を注入するので杭本体の中心を強力なコンクリ
ート柱とすることができる。 Since concrete is injected into the pipe inserted into the pile body, the center of the pile body can be made into a strong concrete column.
第1図は本発明工法を用いる杭本体の正面図、
第2図は同底面図、第3図は杭先金具の斜視図、
第4図は杭本体の先端に杭先金具をはめて土中に
打込もうとしている図、第5図は土中の目的の深
さに打込んだ杭本体に膨脹剤を入れる図、第6図
は土中に入れた杭本体内にパイプを挿入した斜視
図、第7図は膨脹剤によつて杭本体の数箇所が拡
大した図である。
1……杭本体、1a……先端、1b……中程、
2a,2b,2c…スリツト、3……杭先金具、
4……パイプ、5……隙間、6……膨脹剤。
Figure 1 is a front view of the pile body using the construction method of the present invention;
Figure 2 is a bottom view of the same, Figure 3 is a perspective view of the pile tip fitting,
Figure 4 is a diagram of the pile body with the pile end fitting attached to the tip of the pile body and is about to be driven into the soil. Figure 5 is a diagram of the pile body being driven into the soil to the desired depth and an expanding agent being added to the pile body. Figure 6 is a perspective view of the pipe inserted into the pile body placed in the soil, and Figure 7 is a diagram in which several parts of the pile body are enlarged by the expansion agent. 1...Pile body, 1a...Tip, 1b...Middle,
2a, 2b, 2c...Slit, 3...Pile tip metal fitting,
4...pipe, 5...gap, 6...inflating agent.
Claims (1)
トを形成してなる中空状杭本体の先端開口部を杭
先金具で閉塞し、この杭先金具の方から杭本体を
土中の目的の深さまで入れた後、杭本体内に杭本
体よりも小径のパイプを挿入することによつてこ
の小径パイプと杭本体との間に隙間を形成し、該
隙間内に膨脹剤を充填するとともに小径パイプ内
にコンクリートを充填し、時間の経過によつて杭
先及び杭本体の中程に形成した前記スリツト部分
を複数箇所拡大させることを特徴とする杭固定工
法。1. The opening at the end of a hollow pile body, which has multiple slits formed at several points around the tip and the middle, is closed with a pile tip fitting, and the pile body is inserted into the soil from the end of the pile tip fitting. After the pile is inserted to a deep depth, a pipe with a smaller diameter than the pile body is inserted into the pile body to form a gap between the small diameter pipe and the pile body, and the gap is filled with an expanding agent and the small diameter pipe is inserted into the pile body. A pile fixing method characterized in that a pipe is filled with concrete, and as time passes, the slit portions formed at the tip of the pile and the middle of the pile body are expanded at multiple locations.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17485980A JPS57100220A (en) | 1980-12-10 | 1980-12-10 | Fixing work for pile |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17485980A JPS57100220A (en) | 1980-12-10 | 1980-12-10 | Fixing work for pile |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57100220A JPS57100220A (en) | 1982-06-22 |
JPS6160927B2 true JPS6160927B2 (en) | 1986-12-23 |
Family
ID=15985897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17485980A Granted JPS57100220A (en) | 1980-12-10 | 1980-12-10 | Fixing work for pile |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57100220A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0251201U (en) * | 1988-10-05 | 1990-04-10 | ||
JPH0299601A (en) * | 1988-09-30 | 1990-04-11 | Arakawa Ichiro | Pantie |
-
1980
- 1980-12-10 JP JP17485980A patent/JPS57100220A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0299601A (en) * | 1988-09-30 | 1990-04-11 | Arakawa Ichiro | Pantie |
JPH0251201U (en) * | 1988-10-05 | 1990-04-10 |
Also Published As
Publication number | Publication date |
---|---|
JPS57100220A (en) | 1982-06-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0559719A (en) | Constructing method for combined foundation with ground solidification | |
JPS6160927B2 (en) | ||
JPS6160928B2 (en) | ||
JP3129676B2 (en) | Piling columns in building structures using piles as pillars | |
JPS6160926B2 (en) | ||
JPS63110319A (en) | Stabilization work of banking | |
JPS6221089B2 (en) | ||
JPS6211126B2 (en) | ||
JPH03275806A (en) | Method of making knotting pile | |
JPH02304119A (en) | Stabilizing construction method for slope | |
JPS6134525B2 (en) | ||
JPH06108462A (en) | Method and apparatus for foot protection on front end of foundation pile | |
JPS6211125B2 (en) | ||
JPS61204417A (en) | Method of forming pile increased in support force at pile tip by bagform substance | |
JPS6251332B2 (en) | ||
JPH0627404B2 (en) | Ground reinforcement method | |
JPS587024A (en) | Anchor rod | |
JP2512157B2 (en) | Reinforcement method for soft ground | |
JPS6262209B2 (en) | ||
JPS6221088B2 (en) | ||
JPH023847B2 (en) | ||
JPH09279574A (en) | Frictional force increased pile and construction method thereof | |
JPH024728B2 (en) | ||
JPS6037249B2 (en) | How to build large long foundation piles | |
JPS58204218A (en) | Burying work of pile |