JPS6133934B2 - - Google Patents
Info
- Publication number
- JPS6133934B2 JPS6133934B2 JP57193423A JP19342382A JPS6133934B2 JP S6133934 B2 JPS6133934 B2 JP S6133934B2 JP 57193423 A JP57193423 A JP 57193423A JP 19342382 A JP19342382 A JP 19342382A JP S6133934 B2 JPS6133934 B2 JP S6133934B2
- Authority
- JP
- Japan
- Prior art keywords
- foundation pile
- foundation
- steel pipe
- ground
- pile
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 239000000945 filler Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 description 9
- 238000010276 construction Methods 0.000 description 6
- 238000005728 strengthening Methods 0.000 description 3
- 238000009933 burial Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
Description
【発明の詳細な説明】
本発明は、建築物等の基礎部材と結合される基
礎杭頭部の補強工法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for reinforcing the head of a foundation pile that is connected to a foundation member of a building or the like.
建築物等における基礎杭は、鉛直荷重に対抗す
るばかりでなく、地震や風等による大きな水平力
に対抗するため、基礎杭の頭部と布基礎等の基礎
部との結合を強化することが行われている。この
種強化策としては、従来一般に、基礎杭頭部を拡
大補強した状態で基礎部に一体的に結合する方法
がとられている。 Foundation piles in buildings, etc., not only resist vertical loads, but also resist large horizontal forces caused by earthquakes, wind, etc., so it is necessary to strengthen the connection between the head of the foundation pile and the foundation such as a cloth foundation. It is being done. Conventionally, this type of strengthening measure has generally involved expanding and reinforcing the head of the foundation pile and then integrally connecting it to the foundation.
その代表的な方法の一つは、第１図イに示した
ように、まず地盤中１にコンクリート杭２を打込
み、その頭部を所要長さ露出させ、その後杭２の
頭部のコンクリート部分を取除いて鉄筋５を露出
させ、次いで杭２上部の地盤１を掘削して鋼管埋
設穴３を形成し、この穴３内に杭２に嵌挿した有
底鋼管４を着座させ、続いて同図ロに示したよう
に、地盤１の表面にぐり６および捨コン７を敷設
し、基礎部の配筋８を行なつたのち、杭２と鋼管
４の間にコンクリート９を充填すると共に基礎部
のコンクリート１０を打設するようにしている。 One of the typical methods is to first drive a concrete pile 2 into the ground, expose the required length of the head, and then remove the concrete portion of the head of the pile 2, as shown in Figure 1A. The reinforcing bars 5 are removed to expose the reinforcing bars 5, and then the ground 1 above the piles 2 is excavated to form a steel pipe burial hole 3. The bottomed steel pipe 4 inserted into the pile 2 is seated in this hole 3, and then As shown in Figure B, after laying a sinkhole 6 and waste concrete 7 on the surface of the ground 1 and laying reinforcement 8 for the foundation, concrete 9 is filled between the piles 2 and the steel pipes 4, and Concrete 10 for the foundation is being poured.
このような従来の方法においては、有底鋼管４
の埋設穴３を相当の深さまで掘削しなければなら
ず、それに多くの手数を要して施工費が増大する
という欠点がある。 In such a conventional method, the bottomed steel pipe 4
The disadvantage is that the burial hole 3 has to be excavated to a considerable depth, which requires a lot of work and increases the construction cost.
本発明は、かかる従来工法の欠点を解消するた
めになされたもので、地中に打込まれた基礎杭に
対し、下端をテーパー部を介して基礎杭の挿通で
きる程度に小径とした鋼管を嵌挿して地中に打設
し、次いで基礎杭と鋼管との間に膨張性コンクリ
ート等の充填剤を充填することを特徴としてお
り、それによつて、基礎杭の頭部を補強する鋼管
の埋設作業を著しく簡易化して工費の低減を図る
と共に、鋼管の打設による杭外周部の地盤の圧密
強化により、杭頭強化部分の水平および垂直耐力
を一層増大せんとするものである。 The present invention was made in order to eliminate the drawbacks of such conventional construction methods, and uses a steel pipe whose lower end has a diameter small enough to allow the foundation pile to be inserted through the tapered part into the foundation pile driven into the ground. The feature is that the steel pipe is inserted into the ground and then filled with a filler such as expandable concrete between the foundation pile and the steel pipe, thereby reinforcing the head of the foundation pile. In addition to significantly simplifying the work and reducing construction costs, the aim is to further increase the horizontal and vertical strength of the strengthened portion of the pile head by strengthening the consolidation of the ground around the outer periphery of the pile by driving steel pipes.
以下、本発明の実施例を第２図乃至第４図を参
照して説明する。 Embodiments of the present invention will be described below with reference to FIGS. 2 to 4.
図において、１は地盤、２は中空コンクリート
製の基礎杭で、基礎杭２は打撃、圧入等従来公知
の手段によつて地盤１中に打込まれ、地上には所
要の長さだけ露頭される（第２図イ）。基礎杭２
の打込みがなされた後、所定長の杭頭部切断後鉄
筋５を露出させ、次いでこの基礎杭２に対し鋼管
４を嵌挿する。鋼管４は、基礎杭２より大径とし
た本体４ａの下端部に、縮径するテーパー部４ｂ
が設けられ、その下端は基礎杭２が挿通できる程
度の小径部４ｃに形成されている。また、前記テ
ーパー部４ｂには、数条の縦割溝４ｄを設けてお
く。そして鋼管４は、その小径部４ｃから基礎杭
２の頭部を嵌挿し、基礎杭２の打込みに使用した
装置など（図示を略す）を利用して地中に打設し
て行く（第２図ロ）。その際、鋼管４はその下端
部がテーパー部４ｄとなつているため、打設によ
る抵抗が少なく容易に作業が行なえると共に、テ
ーパー部４ｂの作用によつて杭２周囲の地盤１は
外方に圧密され、地盤の強化が図られることにな
る。また、テーパー部４ｂには縦割溝４ｄが設け
られているので、その嵌挿打込みにあたつて、テ
ーパー部４ｄの外方への逃げができ、基礎杭２の
周面を傷つけることなく、嵌挿が容易に行ない得
る。 In the figure, 1 is the ground, 2 is a foundation pile made of hollow concrete, and the foundation pile 2 is driven into the ground 1 by conventionally known means such as hammering or press-fitting, and is exposed on the ground for the required length. (Figure 2 A). Foundation pile 2
After driving, the reinforcing bars 5 are exposed after cutting the pile head of a predetermined length, and then the steel pipe 4 is inserted into the foundation pile 2. The steel pipe 4 has a main body 4a having a diameter larger than that of the foundation pile 2, and a tapered part 4b having a diameter reduced at the lower end of the main body 4a.
is provided, and its lower end is formed into a small diameter portion 4c that allows the foundation pile 2 to pass through. Further, several vertical grooves 4d are provided in the tapered portion 4b. Then, the head of the foundation pile 2 is inserted into the small diameter portion 4c of the steel pipe 4, and the steel pipe 4 is driven into the ground using the device (not shown) used for driving the foundation pile 2 (second Figure b). At this time, since the lower end of the steel pipe 4 has a tapered part 4d, the work can be carried out easily with less resistance during driving, and the ground 1 around the pile 2 is moved outward by the action of the tapered part 4b. The land will be consolidated and the ground will be strengthened. In addition, since the tapered portion 4b is provided with a vertical groove 4d, when inserting and driving the tapered portion 4b, the tapered portion 4d can escape to the outside without damaging the peripheral surface of the foundation pile 2. Insertion can be easily performed.
続いて、第２図ハのように、基礎杭２と鋼管４
との間に、例えば普通コンクリート、膨張性コン
クリート、エポキシ樹脂等の充填剤９を充填し
て、基礎杭２と鋼管４とを一体的に結合させる。
そして、地盤１上にはぐり６を敷設してその上に
捨コン７を流し込み、次に建築物等基礎部の配筋
８を行ない、コンクリート１０を打設することに
より、鋼管４と充填剤９によつて補強された基礎
杭２と基礎部の一体結合がなされるのである。ま
た、その際、基礎杭２の上部中空部内にもコンク
リート１１を充填させる。 Next, as shown in Figure 2 C, the foundation pile 2 and steel pipe 4 are installed.
A filler 9 such as ordinary concrete, expandable concrete, or epoxy resin is filled between the foundation pile 2 and the steel pipe 4 to integrally connect them.
Then, by laying a gouge 6 on the ground 1 and pouring waste concrete 7 thereon, reinforcing 8 for the foundation of a building, etc., and pouring concrete 10, the steel pipe 4 and the filler 9 are placed. Thus, the reinforced foundation pile 2 and the foundation are integrally connected. At this time, the upper hollow portion of the foundation pile 2 is also filled with concrete 11.
なお、この場合、充填剤９に基礎部のコンクリ
ート１０と同一のものを使用するものであれば、
基礎杭２と鋼管４との間の充填と基礎部コンクリ
ートの打設とを同時に行なうこともできる。 In this case, if the filler 9 is the same as the concrete 10 of the foundation,
Filling between the foundation piles 2 and the steel pipes 4 and placing the foundation concrete can also be performed at the same time.
以上説明したように、本発明の工法は、基礎杭
の補強用の鋼管に、下端部に縮径方向のテーパー
部を設けた鋼管も用い、これを基礎杭に嵌挿して
打撃や圧入等の手段で地中に打設するようにした
ので、従来のように打設した基礎杭の周囲に鋼管
埋設のための穴を掘る必要がなく、基礎杭の打込
みに用いた装置などを利用して鋼管を簡易にしか
も基礎杭の周面を傷つけることなく打設すること
ができ、したがつて、基礎杭補強のための作業が
省力化され、施工費の低減が図れると共に、鋼管
の打設によつて周囲の地盤の圧密、強化が行なわ
れ、対抗力の優れた基礎構造が得られる。また、
基礎杭と鋼管との間の充填剤に膨張性コンクリー
トを用いるようにすれば、基礎杭と鋼管との結合
は一層強化されることになる等、多くの優れた効
果を奏するものである。 As explained above, the construction method of the present invention uses a steel pipe with a diameter-reducing taper at the lower end of the steel pipe for reinforcing the foundation pile, which is inserted into the foundation pile and subjected to hammering, press-fitting, etc. Since the steel pipes are driven into the ground by means of conventional methods, there is no need to dig a hole around the driven foundation piles to bury the steel pipes, and instead it is possible to use the equipment used to drive foundation piles. Steel pipes can be easily driven without damaging the surrounding surface of foundation piles, which saves labor for reinforcing foundation piles and reduces construction costs. As a result, the surrounding ground is consolidated and strengthened, resulting in a foundation structure with excellent resistance. Also,
If expandable concrete is used as a filler between the foundation pile and the steel pipe, many excellent effects can be achieved, such as further strengthening the bond between the foundation pile and the steel pipe.
第１図イ，ロは従来工法の態様を示す側断面
図、第２図イ，ロ，ハは本発明の一実施例による
工程を示した側断面図である。
１…地盤、２…基礎杭、４…鋼管、５…軸鉄
筋、９…充填剤、１０，１１…コンクリート。
1A and 1B are side sectional views showing aspects of the conventional construction method, and FIGS. 2A, 2B, and 2C are side sectional views showing processes according to an embodiment of the present invention. 1... Ground, 2... Foundation pile, 4... Steel pipe, 5... Shaft reinforcement, 9... Filler, 10, 11... Concrete.
Claims (1)
り大径とした本体の下端部に、下端を基礎杭が挿
通できる程度に小径にすると共に複数の縦割溝を
有するテーパー部を設けた鋼管をそのテーパー部
を介して基礎杭の露頭部より嵌挿して地中に打設
し、基礎杭と鋼管との間に膨張性コンクリート等
の充填剤を充填することを特徴とする基礎杭頭部
の補強工法。1 After driving the foundation pile into the ground, the lower end of the main body, which has a diameter larger than that of the foundation pile, is made small enough to allow the foundation pile to pass through, and a tapered part with multiple vertical grooves is provided. A foundation pile cap characterized in that a steel pipe is inserted into the outcrop of a foundation pile through its tapered part and driven into the ground, and a filler such as expandable concrete is filled between the foundation pile and the steel pipe. Reinforcement method for parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19342382A JPS5985034A (en) | 1982-11-02 | 1982-11-02 | Reinforcing work for head of foundation pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19342382A JPS5985034A (en) | 1982-11-02 | 1982-11-02 | Reinforcing work for head of foundation pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5985034A JPS5985034A (en) | 1984-05-16 |
| JPS6133934B2 true JPS6133934B2 (en) | 1986-08-05 |
Family
ID=16307718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19342382A Granted JPS5985034A (en) | 1982-11-02 | 1982-11-02 | Reinforcing work for head of foundation pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5985034A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61135947U (en) * | 1985-02-07 | 1986-08-23 | ||
| JP4734151B2 (en) * | 2005-05-27 | 2011-07-27 | 清水建設株式会社 | Pile head joint structure and construction method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4533369Y1 (en) * | 1965-05-25 | 1970-12-19 | ||
| JPS56105016A (en) * | 1980-01-28 | 1981-08-21 | Touparu Gijutsu Kenkyusho:Kk | Executing method for reinforced foundation pile and reinforcing steel pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4725664U (en) * | 1971-04-15 | 1972-11-22 |
-
1982
- 1982-11-02 JP JP19342382A patent/JPS5985034A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4533369Y1 (en) * | 1965-05-25 | 1970-12-19 | ||
| JPS56105016A (en) * | 1980-01-28 | 1981-08-21 | Touparu Gijutsu Kenkyusho:Kk | Executing method for reinforced foundation pile and reinforcing steel pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5985034A (en) | 1984-05-16 |
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