JPS6311716A - Construction of pile - Google Patents

Construction of pile

Info

Publication number
JPS6311716A
JPS6311716A JP15462186A JP15462186A JPS6311716A JP S6311716 A JPS6311716 A JP S6311716A JP 15462186 A JP15462186 A JP 15462186A JP 15462186 A JP15462186 A JP 15462186A JP S6311716 A JPS6311716 A JP S6311716A
Authority
JP
Japan
Prior art keywords
pile
concrete
hammer
steel pipe
striking
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.)
Pending
Application number
JP15462186A
Other languages
Japanese (ja)
Inventor
Nakamasa Murakami
村上 中正
Chikao Watabe
渡部 愛雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitani Sekisan Co Ltd
Original Assignee
Mitani Sekisan Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitani Sekisan Co Ltd filed Critical Mitani Sekisan Co Ltd
Priority to JP15462186A priority Critical patent/JPS6311716A/en
Publication of JPS6311716A publication Critical patent/JPS6311716A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To form a pile foundation having high bearing forces without noise by a method in which a pile consisting of an upper steel tubular pile and a lower concrete pile is penetrated into the ground, and the lower pile is struck by a hammer inserted into the upper pile. CONSTITUTION:An upper steel tubular pile 6a and a lower concrete pile 6b are vertically connected with each other to form a pile 6. An earth auger is inserted into the pile 6 to drive the pile 6 to a given depth into the ground. A hammer 10 is inserted into the pile 6a, a sound-proof cover 15 is put on the upper end opening of the pile 6a, and the upper end of the pile 6b is struck by the hammer 10 to penetrate the lower end of the pile 6b into the bearing ground. The hammer 10 is removed, and concrete 16 is placed into the pile 6a as needed. The pile foundation having great bearing capacity can thus be formed without noise pollution.

Description

【発明の詳細な説明】 (産業上の利用分gf) この発明は杭の建込み工法に関するもので、既製杭を施
工する場合に利用される。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application gf) The present invention relates to a method for constructing piles, and is used when constructing ready-made piles.

(従来の技術) 既製杭の施工においては、打撃により杭を支持地盤内に
打ち止めれば、最も大きい支持力が得られるごとは一般
に認められているが、杭頭に打撃を加えると非常に大き
い騒音を発生し、適当な防音手段もないことから、騒音
公害とされる場合があった。
(Conventional technology) In the construction of ready-made piles, it is generally accepted that the highest bearing capacity can be obtained by driving the pile into the supporting ground by hammering, but if the pile cap is hit, the bearing capacity is extremely large. It was sometimes considered a noise pollution because it generated noise and lacked proper soundproofing measures.

このような騒音問題を解決する手段として、コンクリー
ト杭の内部に打撃ハンマー(いわゆるモンケン)を挿入
し、上杭部分で打撃ハンマーを昇降させて、中杭又は上
杭の上端を打撃するようにした工法が提案されている(
特開昭58−44125号)(発明が解決しようとする
問題点) 上記の工法では、打撃ハンマーによる打撃時に、上杭に
引張力が働き、コンクリートが割れてしまう場合があっ
た。又、コンクリート杭の内径は比較的小径であるので
、打撃ハンマーは、必要な重量とする為には、異常な長
さとなり、この結果打撃ハンマーの昇降距離が制限され
て、十分な打撃力が得られない問題点もあった。
As a means to solve this noise problem, a striking hammer (so-called Monken) was inserted inside the concrete pile, and the hammer was moved up and down at the upper pile to strike the upper end of the middle or upper pile. A construction method has been proposed (
(Unexamined Japanese Patent Publication No. 58-44125) (Problems to be Solved by the Invention) In the above method, tensile force acts on the upper pile when it is struck by a hammer, and the concrete may crack. In addition, since the inner diameter of the concrete pile is relatively small, the striking hammer must be of an abnormal length in order to achieve the required weight, which limits the lifting distance of the striking hammer and makes it difficult to obtain sufficient striking force. There were some problems that could not be solved.

(問題点を解決する為の手段) そこでこの発明は、上杭部分を鋼管などのコンクリート
以外の管体として、引張力にも耐えるようにすると共に
、上杭の内径を大きくしたのである。
(Means for Solving the Problems) Therefore, in this invention, the upper pile part is made of a pipe other than concrete, such as a steel pipe, to withstand tensile force, and the inner diameter of the upper pile is increased.

即ちこの発明の杭の建込み工法は、杭穴を掘削し、該杭
穴に杭を建込む工法において、前記杭穴には、上杭部分
に中杭および/または上杭部分のコンクリート杭より薄
肉の管体を連結した杭を建込み、前記管体内に打撃ハン
マーを挿入し、該打撃ハンマーを昇降させて、前記中杭
または上杭を打撃することにより、杭の下端を支持地盤
内へ貫入させることを特徴としている。
That is, the pile erecting method of the present invention is a method in which a pile hole is excavated and a pile is erected in the pile hole. A pile connected to thin-walled pipes is erected, a striking hammer is inserted into the pipe, and the striking hammer is raised and lowered to strike the middle pile or the upper pile, thereby moving the lower end of the pile into the supporting ground. It is characterized by penetration.

前記において管体は、中杭および/または上杭部分のコ
ンクリート杭の外径以上の外径の鋼管が主として用いら
れるが、鋼管の肉厚は適宜定める。
In the above, the pipe body is mainly a steel pipe having an outer diameter equal to or larger than the outer diameter of the concrete pile of the middle pile and/or the upper pile portion, but the wall thickness of the steel pipe is determined as appropriate.

前記抗の建込みに際して上杭の下端が開口している場合
には、杭の内側に泥水が流入してくるので、この泥水を
一部排水する必要がある。上杭の下端が閉鎖している場
合には泥水の流入はないので排水の必要もない。
If the lower end of the upper pile is open during erection of the shaft, muddy water will flow into the inside of the pile, so it is necessary to partially drain this muddy water. If the lower end of the upper pile is closed, no muddy water will flow in and there is no need for drainage.

前記泥水の排水は、打撃ハンマーの昇降に支障が無けれ
ば良いもので、前記管体の下端部が、打撃完了時に位置
する深さまで排水してあれば十分である。
The muddy water may be drained as long as it does not interfere with the lifting and lowering of the striking hammer, and it is sufficient that the muddy water is drained to a depth where the lower end of the tube body is located when striking is completed.

打撃ハンマーの昇降は管体内で行うことがら、打撃時の
騒音は管体によって遮音されるが、上端部に遮音塁を被
冠しても良い。
Since the striking hammer is raised and lowered within the tube, the noise generated during striking is insulated by the tube, but the upper end may be covered with a sound insulating base.

尚、前記管体は主として鋼管が用いられるのであるが、
構造材としての強度を保有する肉厚とする場合と、内部
にコンクリートを打設することも可能であるので、型枠
としての強度を保有する肉厚とする場合とがある。この
管体は、要するに打撃ハンマーによる打撃時に作用する
引張力に耐え得るものであれば良く、鋼管以外の材質の
管体としても良い。
Furthermore, although steel pipes are mainly used as the pipe bodies,
In some cases, the wall thickness is such that it has the strength as a structural material, and in other cases, the wall thickness is such that it has the strength as a formwork, since it is also possible to place concrete inside. In short, this tubular body may be of any material as long as it can withstand the tensile force acting upon impact with a hammer, and may be made of a material other than a steel pipe.

(作 用) この発明によれば、打撃ハンマーを挿入する部分の上杭
をコンクリート杭より薄肉の管体で構成したので、打撃
による引張力に耐えて、割れるおそれが無いと共に、上
杭の内径を大きくできるので、打撃ハンマーの長さも、
その分短くでき、大きな昇降距離で十分な打撃力を得る
ことができる。
(Function) According to the present invention, the upper pile in which the impact hammer is inserted is made of a tubular body that is thinner than the concrete pile, so it can withstand the tensile force caused by the impact and there is no risk of cracking, and the inner diameter of the upper pile is can be made larger, so the length of the striking hammer can also be increased.
It can be shortened accordingly, and sufficient striking power can be obtained with a large lifting distance.

(実施例) 以下この発明の実施例を図面を参照して説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.

はじめに第1図および第2図に示したように、杭穴1を
掘削する0図は二−ディング工法で掘削する状態を示し
ており、下端にアースオーガー2を設けた回転軸3の中
間部に練付板4.4を取付けな掘削具5を回転して行う
Introduction As shown in Figures 1 and 2, Figure 0 shows the situation in which a pile hole 1 is excavated using the seconding method. Attach the drilling plate 4.4 and rotate the excavating tool 5.

上記のようにして掘削した杭穴1内に第3図および第4
図に示したように杭6を建込む。
Figures 3 and 4 are placed inside the pile hole 1 excavated as described above.
Pile 6 is erected as shown in the figure.

前記において杭6は上杭6aと上杭6bとを上下に連設
して構成したもので、上杭6bはコンクリート製としで
ある一方、上杭6aは上杭6bの外径とほぼ同一の外径
を有する鋼管としてあり、上、上杭は常法により連結し
である。上杭6bの下端には支持金具7が設けであるが
、内外が連通しており、杭6の内側に泥水9が流入する
In the above, the pile 6 is constructed by vertically connecting the upper pile 6a and the upper pile 6b, and the upper pile 6b is made of concrete, while the upper pile 6a is made of concrete and has a diameter that is almost the same as the outer diameter of the upper pile 6b. It is a steel pipe with an outer diameter, and the upper and upper piles are connected using the usual method. A support fitting 7 is provided at the lower end of the upper pile 6b, and the inside and outside are in communication, so that muddy water 9 flows into the inside of the pile 6.

従って第5図に示したように、上杭6aの上方開口部よ
り排水ポンプ8を挿入し、杭6内の泥水9を所定の深さ
まで排水する。泥水9の水位は上杭6aの下端部が降下
する予定の深さより下方となっていれば良い。
Therefore, as shown in FIG. 5, a drain pump 8 is inserted through the upper opening of the upper pile 6a, and the muddy water 9 in the pile 6 is drained to a predetermined depth. It is sufficient that the water level of the muddy water 9 is below the depth to which the lower end of the upper pile 6a is scheduled to descend.

続いて第6図に示したように、上杭6aの内部に打撃ハ
ンマー10を挿入する。打撃ハンマー10は第8図に示
したように、上面に昇降の為のワイヤー11が連結しで
あると共に、下面にもワイヤー12が吊下してあり、下
面側のワイヤー12には打撃ブロック13が挿通してあ
り、かつ下端部に重錘14が固着しである。前記打撃ブ
ロック13は打撃ハンマー10の打撃力を上杭6bへ伝
達する為の鉄製ブロックで、上下面にはクッション材が
設けられて、上杭6bの上端部を保護できるようになっ
ている。
Subsequently, as shown in FIG. 6, the impact hammer 10 is inserted into the inside of the upper pile 6a. As shown in FIG. 8, the striking hammer 10 has a wire 11 connected to the upper surface for lifting and lowering, and a wire 12 suspended from the lower surface, and a striking block 13 is connected to the wire 12 on the lower surface. is inserted through it, and a weight 14 is fixed to the lower end. The striking block 13 is an iron block for transmitting the striking force of the striking hammer 10 to the upper stake 6b, and cushioning material is provided on the upper and lower surfaces to protect the upper end of the upper stake 6b.

打撃ハンマー10を挿入したならば、地上に出ている上
杭6aの上端開口部には有頂筒状の遮音蓋15を被冠し
、打撃ハンマー10を上昇、落下させることにより上杭
6bの上端部を、前記打撃ブロック13を介して打撃し
て、上杭6bの下端部を支持地盤内に貫入させて、杭6
の建込みを完了する。
Once the impact hammer 10 is inserted, the top opening of the upper pile 6a protruding from the ground is covered with a sound insulating cover 15 in the form of a cylindrical top, and the impact hammer 10 is raised and lowered to open the upper pile 6b. The upper end of the upper pile 6b is struck through the striking block 13 to penetrate the lower end of the upper pile 6b into the supporting ground.
Completed construction.

第7図は上記のようにして建込んだ抗6の上杭6aの部
分にコンクリート16を打設したもので、上杭6aと上
杭6bの境界部分には仕切板17を設けである。尚、上
杭6a内へコンクリート16を打設するのは必須の要件
ではなく、上杭6aを構成した鋼管のみで、必要とする
強度が得られる場合には、コンクリートの打設はしなく
ても良い。
In FIG. 7, concrete 16 is poured into the upper pile 6a of the shaft 6 constructed as described above, and a partition plate 17 is provided at the boundary between the upper pile 6a and the upper pile 6b. It should be noted that it is not an essential requirement to cast concrete 16 into the upper pile 6a, and if the required strength can be obtained only with the steel pipe that constitutes the upper pile 6a, concrete does not need to be cast. Also good.

尚、第7図に示した如くの鋼管とコンクリートによる複
合抗を構成する場合、鋼管をリブ付5!l′!管として
、コンクリートの付着を良くすることもできる。
In addition, when configuring a composite shaft made of steel pipes and concrete as shown in Fig. 7, the steel pipes are fitted with ribbed 5! l′! It can also be used as a pipe to improve concrete adhesion.

一方コンクリート16の打設に際しては、上杭内に鉄筋
籠を配置して鉄筋コンクリート抗とすることもできる。
On the other hand, when pouring the concrete 16, a reinforced concrete cage may be constructed by placing a reinforcing bar cage inside the upper pile.

このように上杭部分は、杭の打設後にコンクリートご打
設して鉄筋コンクリート抗を構成することも可能である
から、上杭6aとしては、必ずしも鋼管とする必要は無
く、打撃ハンマーの打撃時に作用する引張力に耐えるも
のであって、かつコンクリートの打設時には型枠として
椴能し得るものであれば、他の材質による管体とするこ
ともできる。
In this way, it is possible to construct a reinforced concrete shaft by pouring concrete into the upper pile part after driving the pile, so the upper pile 6a does not necessarily need to be made of steel pipe, and when struck by a hammer, The tube body may be made of other materials as long as it can withstand the applied tensile force and can be used as a formwork during concrete pouring.

上記実施例では上杭6aと上杭6bとからなる杭6を建
込んだが、上杭と上杭の間に1乃至複数の中杭を連設し
た杭でも同様に実施することができる。この場合、打撃
ハンマー10の打撃力は上杭の下側の中杭の上端部に加
えることになる。
In the above embodiment, the pile 6 consisting of the upper pile 6a and the upper pile 6b was erected, but the same method can be used with a pile in which one or more medium piles are connected between the upper piles. In this case, the impact force of the impact hammer 10 is applied to the upper end of the middle pile below the upper pile.

上杭部分は鋼管、鋼管とコンクリート又は鉄筋コンクリ
ート等で構成されるので、該部は曲げモーメントや剪断
力に耐えるモーメント杭とすることができる。
Since the upper pile portion is composed of a steel pipe, a steel pipe and concrete or reinforced concrete, this portion can be made into a moment pile that can withstand bending moment and shearing force.

(発明の効果) 以上に説明した通り、この発明によれば、上杭部分をコ
ンクリート以外の管体として建込むようにしたので、打
撃ハンマーの打撃によって作用する引張力に耐える効果
があると共に、上杭の内径が大きい為、打撃ハンマーの
高さを低くできるので、打撃ハンマーを十分に昇降させ
て、能率良く杭を支持地盤へ貫入させることができる。
(Effects of the Invention) As explained above, according to the present invention, the upper pile portion is constructed as a pipe other than concrete, which has the effect of withstanding the tensile force exerted by the impact of the impact hammer. Since the inner diameter of the upper pile is large, the height of the impact hammer can be lowered, so the impact hammer can be raised and lowered sufficiently to efficiently penetrate the pile into the supporting ground.

又、建込み完了後、上杭部分はコンクリートの打設など
が可能で、複合杭を構成できる効果がある。更には、打
撃ハンマーの重量、落下高並びに1回の打撃におけるリ
バウンド高と、杭の沈下量等を測定可能であるので、杭
に対する打撃力を確認できる効果がある。
Furthermore, after construction is completed, concrete can be placed on the upper pile, which has the effect of forming a composite pile. Furthermore, since it is possible to measure the weight of the impact hammer, the falling height, the rebound height in one impact, the amount of sinking of the pile, etc., it is possible to confirm the impact force on the pile.

【図面の簡単な説明】[Brief explanation of drawings]

第1図乃至第7図はこの発明の実施例の断面図で、第1
図および第2図は杭穴掘削時の図、第3図および第4図
は杭を建込む時の図、第5図は泥水排水時の図、第6図
は打撃ハンマーによる打撃時の図、第7図は上杭内へコ
ンクリートを打設した図であり、第8図は打撃ハンマー
の説明図である。
FIGS. 1 to 7 are cross-sectional views of embodiments of the present invention.
Figures 3 and 4 are diagrams when digging a pile hole, Figures 3 and 4 are diagrams when erecting a pile, Figure 5 is a diagram when muddy water is drained, and Figure 6 is a diagram when hitting with a hammer. , FIG. 7 is a diagram showing concrete being poured into the upper pile, and FIG. 8 is an explanatory diagram of the impact hammer.

Claims (1)

【特許請求の範囲】 1 杭穴を掘削し、該杭穴に杭を建込む工法において、
前記杭穴には、上杭部分に中杭および/または下杭部分
のコンクリート杭より薄肉の管体を連結した杭を建込み
、前記管体内に打撃ハンマーを挿入し、該打撃ハンマー
を昇降させて、前記中杭または下杭を打撃することによ
り、杭の下端を支持地盤内へ貫入させることを特徴とし
た杭の建込み工法 2 管体は、中杭および/または下杭部分のコンクリー
ト抗の外径以上の外径の鋼管とした特許請求の範囲第1
項記載の杭の建込み工法 3 杭の建込みは、管体内に流入した泥水を排水するよ
うにした特許請求の範囲第1項記載の杭の建込み工法 4 泥水の排水は、管体の下端部が、打撃完了時に位置
する深さまで行う特許請求の範囲第3項記載の杭の建込
み工法 5 打撃ハンマーの昇降は、管体の上端部に遮音蓋を被
冠して行う特許請求の範囲第1項記載の杭の建込み工法 6 鋼管は、構造材としての強度を保有する肉厚とした
特許請求の範囲第2項記載の杭の建込み工法 7 銅管は、コンクリートと共同して複合杭を構成し得
る肉厚とした特許請求の範囲第2項記載の杭の建込み工
法 8 鋼管は、コンクリートの打設に対して型枠としての
強度を保有する肉厚とした特許請求の範囲第2項記載の
杭の建込み工法
[Claims] 1. A method of excavating a pile hole and erecting a pile in the pile hole,
In the pile hole, a pile is erected in which the upper pile part is connected to a pipe body having a thinner wall than the middle pile and/or the concrete pile in the lower pile part, a percussion hammer is inserted into the pipe body, and the percussion hammer is raised and lowered. Pile construction method 2, characterized in that the lower end of the pile penetrates into the supporting ground by striking the middle pile or the lower pile. Claim 1, which is a steel pipe with an outer diameter greater than or equal to
3. Pile erection method according to claim 1. The pile erection method is to drain muddy water that has flowed into the pipe body. 4 Pile erection method according to claim 1. Pile erection construction method 5 according to claim 3, in which the lower end is carried out to a depth at which it is located when the hammering is completed. 6. Method for erecting piles according to scope 1. 6. Method for erecting piles according to claim 2. 7. Copper pipes are used in combination with concrete. Claim 8: Pile construction method according to claim 2, in which the steel pipe has a wall thickness that can be used to construct a composite pile.A patent claim in which the steel pipe has a wall thickness that maintains the strength as a formwork for concrete pouring. The pile erection method described in Section 2 of the scope of
JP15462186A 1986-07-01 1986-07-01 Construction of pile Pending JPS6311716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15462186A JPS6311716A (en) 1986-07-01 1986-07-01 Construction of pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15462186A JPS6311716A (en) 1986-07-01 1986-07-01 Construction of pile

Publications (1)

Publication Number Publication Date
JPS6311716A true JPS6311716A (en) 1988-01-19

Family

ID=15588183

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15462186A Pending JPS6311716A (en) 1986-07-01 1986-07-01 Construction of pile

Country Status (1)

Country Link
JP (1) JPS6311716A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392447A (en) * 2011-09-19 2012-03-28 苏州予力再生建材有限公司 Given force variable stiffness discrete material pile ramming and expanding machine and application thereof
CN103821146A (en) * 2014-02-12 2014-05-28 杭州建工集团有限责任公司 Pile detonating and cutting construction process for PC (prestressed concrete) tubular piles

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5262914A (en) * 1975-11-17 1977-05-24 Nippon Concrete Ind Co Ltd Execution method of piles
JPS57193622A (en) * 1981-05-22 1982-11-29 Kubota Ltd Driving method of composite pile and used composite pile therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5262914A (en) * 1975-11-17 1977-05-24 Nippon Concrete Ind Co Ltd Execution method of piles
JPS57193622A (en) * 1981-05-22 1982-11-29 Kubota Ltd Driving method of composite pile and used composite pile therefor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392447A (en) * 2011-09-19 2012-03-28 苏州予力再生建材有限公司 Given force variable stiffness discrete material pile ramming and expanding machine and application thereof
CN103821146A (en) * 2014-02-12 2014-05-28 杭州建工集团有限责任公司 Pile detonating and cutting construction process for PC (prestressed concrete) tubular piles

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