JPH03107017A - Pile head treatment method for cast-in-place concrete pile - Google Patents
Pile head treatment method for cast-in-place concrete pileInfo
- Publication number
- JPH03107017A JPH03107017A JP24335689A JP24335689A JPH03107017A JP H03107017 A JPH03107017 A JP H03107017A JP 24335689 A JP24335689 A JP 24335689A JP 24335689 A JP24335689 A JP 24335689A JP H03107017 A JPH03107017 A JP H03107017A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- pile head
- head
- concrete
- pieces
- 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
Links
- 238000000034 method Methods 0.000 title claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 21
- 238000010276 construction Methods 0.000 abstract description 7
- 230000002787 reinforcement Effects 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract 2
- 238000005553 drilling Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 206010010071 Coma Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は場所打コンクリート杭の抗頭処理方法に係るも
のである．
（従来の技術）
従来、この種の抗頭処理方法においては、杭頭部（ａ）
にカッターで円周方向の満（ｂ）を設け、（第１３図参
照）ブレーカー（Ｃ）によって抗頭コンクリートを斬る
．（第１４図参照）図中（ｄ）はコンクリー１・塊、（
ｅ）は杭鉄筋である。[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for treating the head of cast-in-place concrete piles. (Prior art) Conventionally, in this type of pile head treatment method, pile head (a)
A cutter is used to create a circumferential groove (b), and a breaker (C) is used to cut the counter head concrete (see Figure 13). (See Figure 14) In the figure, (d) shows the concrete 1 lump, (
e) is pile reinforcement.
かくしてブレーカー（Ｃ）により抗頭コンクリー１・の
外周部を折り取ったのち、（第１５図参照）杭鉄筋（ｅ
）内側のコンクリート塊（ｆ）に水平に矢（ｇ）を入れ
、同コンクリート塊（ｆ）と抗躯体との縁を切る。この
とき、鉄筋（ｅ）を拡開して吊り易いようにしておく。After breaking off the outer periphery of the head concrete 1 with the breaker (C) (see Figure 15), the pile reinforcing bars (e
) Insert an arrow (g) horizontally into the inner concrete mass (f) and cut the edge between the concrete mass (f) and the skeleton. At this time, the reinforcing bars (e) are expanded to make it easier to hang.
（第１６図参照）
かくして抗躯体と縁の切れたコンクリート塊（『）をワ
イヤー（ロ）で吊上げ、（第１７図参照）抗頭処狸面（
＋）の表面仕上げを行なう。（第１８図参照）（発明が
解決しようとする課題）
前記従来の抗頭処理方法においては、プレーカ一を使用
した人力による折り作業が多いため、長期に亘って騒音
振動が発生し、また多量の粉塵が発生し、更に振動に起
因する疾病が発生する等作業員の健康管理上、問題が多
い．
本発明は前記従来技術の有する問題点に鑑みて提案され
たもので、その目的とする処は、従来工法におけるプレ
ーカーを使用した人力研り作業をなくし、杭頭処理部を
大割のまま静的に処理し、騒音の発生がなく、工期を短
縮し、工費を節減しうる場所打コンクリート杭の抗頭処
理方法を提供する点にある。(See Figure 16) The concrete block ( ) with the cut edge of the main frame is lifted up with the wire (B) (see Figure 17).
+) Perform surface finishing. (See Figure 18) (Problems to be Solved by the Invention) In the conventional head processing method, since the folding work is often done manually using a breaker, noise and vibration are generated over a long period of time, and a large amount of There are many problems in terms of health management of workers, such as the generation of dust and the occurrence of diseases caused by vibration. The present invention was proposed in view of the problems of the prior art described above, and its purpose is to eliminate the manual grinding work using a chipper in the conventional construction method, and to leave the pile head treatment section largely divided. The object of the present invention is to provide a method for treating the head of a cast-in-place concrete pile, which can be treated statically, does not generate noise, shortens the construction period, and reduces construction costs.
（課題を解決するための手段）
前記の目的を達威するため、本発明に係る場所打コンク
リート杭の抗頭処理方法は、場所打コンクリートの杭頭
部における杭鉄筋に予めパイプカバーを嵌着しておき、
前記杭頭部に円周方向に亘ってカッターで溝を穿設し、
次いで同円周溝位置において削岩機で直径方向の穿孔部
を設け、次いで破砕具に開閉自在に装架された一双の破
砕片と、同両破砕片の対向テーパー面に楔合し、且つ可
摺動的に嵌押された楔片とを前記穿孔部に挿入し、同楔
片を穿孔部の内奥部に進入せしめ、前記両破砕片を拡閲
せしめて前記抗頭コンクリート部を割裂し、次いで杭頭
部に複数の水平の吊上げ用片を嵌入し、同各吊上げ用片
を基盤面に設置されたジャッキで押上げるとともに、同
各ジャッキ受片に係着された吊上部材をクレーンによっ
て吊上げるように構威されている。(Means for Solving the Problems) In order to achieve the above object, the method for treating the head of a cast-in-place concrete pile according to the present invention includes fitting a pipe cover in advance to the pile reinforcing bar at the head of the cast-in-place concrete pile. Keep it
Drilling a groove in the pile head circumferentially using a cutter,
Next, a diametrically perforated hole is formed in the same circumferential groove position using a rock drill, and then a pair of crushed pieces are mounted on the crushing tool so as to be openable and closable, and the crushed pieces are wedged with the opposing tapered surfaces of the crushed pieces. A wedge piece that is slidably fitted and pushed is inserted into the hole, and the wedge piece is advanced deep into the hole, and both of the crushed pieces are expanded to split the concrete head section. Then, a plurality of horizontal lifting pieces are fitted into the pile head, each lifting piece is pushed up by a jack installed on the base surface, and the lifting members attached to each jack receiving piece are pushed up. It is configured to be lifted by a crane.
（作用）
本発明によれば前記したように、場所打コンクリート杭
の杭頭部における杭鉄筋に、予めパイプカバーを嵌着し
ておくことによって、同杭鉄筋とコンクリートとの付着
がなくなるようにしておき、前記杭頭部にカッターによ
って円周方向に溝を穿設して、抗頭処理部と杭躯体との
縁を切り、杭頭部の円周部が大きく欠落することのない
ようにする。(Function) According to the present invention, as described above, by fitting the pipe cover in advance to the pile reinforcing bars at the head of the cast-in-place concrete pile, adhesion between the pile reinforcing bars and the concrete is eliminated. Then, use a cutter to cut a groove in the circumferential direction of the pile head to cut the edge of the pile head treatment part and the pile body, so that the circumferential part of the pile head will not be missing too much. do.
次いで前記円周溝位置において、削岩機により杭頭部に
直径方向の穿孔部を設け、同穿孔部に前記破砕具に開閉
自在に装架された一双の破砕片と、同両破砕片の対向テ
ーパー面に楔合し、且つ可摺動的に嵌挿された楔片とを
挿入し、同楔片を前記穿孔部の内奥部に進入せしめるこ
とによって、前記両破砕片が楔片によって強制的に拡開
され、抗頭コンクリート部が内部より割裂される．次い
で本発明においては前記杭頭部に複数の水平の吊上げ用
片を嵌入し、同吊上げ用片を基盤面に設置されたジャッ
キによって押上げるとともに、前記各吊上げ用片に係着
された吊上部材をクレーンによって吊上げることによっ
て、前記したように内部より割裂された杭頭部のコンク
リート大塊が吊上げられる。Next, at the circumferential groove position, a diametrical hole is made in the pile head using a rock drill, and a pair of crushed pieces attached to the crushing tool so as to be openable and closable are inserted into the hole. By inserting a wedge piece that is wedged into the opposing tapered surface and slidably inserted into the hole, and entering the wedge piece into the innermost part of the hole, both the crushed pieces are separated by the wedge piece. It was forcibly expanded and the concrete section of the counterhead was split from the inside. Next, in the present invention, a plurality of horizontal lifting pieces are fitted into the pile head, and the lifting pieces are pushed up by a jack installed on the base surface, and the lifting pieces attached to each of the lifting pieces are pushed up. By lifting the member with a crane, the large concrete block of the pile head, which has been split from the inside as described above, is lifted up.
この際、前記受片がジャッキによって江上されているこ
とによって、クレーンによる吊上作業が円滑に行なわれ
、また杭頭部の杭鉄筋にバイブキャップが嵌着されてい
るので、同杭鉄筋とコンクリートとの付着力がなくなり
、前記杭頭部コンクリート大塊は、杭鉄筋より抜け出し
て、抗躯体より円滑に吊上げられるものである。At this time, since the receiving piece is lifted up by a jack, the lifting work by the crane can be carried out smoothly, and since the vibrator cap is fitted to the pile reinforcing bar at the head of the pile, the pile reinforcing bar and concrete The adhesive force between the pile head and the pile head is removed, and the pile head concrete mass is pulled out from the pile reinforcing bars and is smoothly lifted from the pile reinforcement.
（実施例）
以下、本発明を図示の実施例について説明する．予め杭
鉄筋（１）の杭頭部分にポリスチレンフオーム製のパイ
プカバー（２）を嵌装する．なお同パイプ力バー（２）
はその下端が杭頭部截断予定線Ｘ−Ｘより３ｃ＋＋＋程
度上方に位置するように杭鉄筋（１）に嵌装される．こ
れは抗施工時の鉄筋天端高の施工誤差を考慮して、パイ
プカバー（２）が杭躯体内に入らないようにするための
処置である。また前記パイプ力バー（２）は上下２個所
を杭鉄筋（１）に番線で結束し、上下両端部に粘着テー
プ（３）を巻着してパイプ力バー（２）内にコンクリー
トが侵入するのを防止する。(Example) The present invention will be described below with reference to the illustrated example. In advance, fit a polystyrene foam pipe cover (2) onto the pile cap of the pile reinforcing bar (1). The same pipe force bar (2)
is fitted to the pile reinforcing bar (1) so that its lower end is located approximately 3c+++ above the scheduled pile head cutting line X-X. This is a measure to prevent the pipe cover (2) from entering the pile frame in consideration of construction errors in the top height of reinforcing bars during construction. In addition, the pipe force bar (2) is tied to the pile reinforcing bars (1) at the top and bottom with wire, and adhesive tape (3) is wrapped around both the top and bottom ends to prevent concrete from entering the pipe force bar (2). to prevent
（第１図参照）
而して場所打ちコンクリート施工後カツター（４）によ
って杭頭部■の截断予定線に沿って円周溝（５）を穿設
し、抗躯体（（３）と処理部と周囲との縁を切る。(See Figure 1.) After the cast-in-place concrete construction, a circumferential groove (5) is cut along the planned cutting line of the pile head (■) using a cutter (4), and Cut ties with those around you.
（第２図参照）
次いで前記円周溝（５）上より削岩ｍ （６）によって
抗直径方向に互って径４５〜４８ｍｓ、深さ１０ｃｍ以
上の穿孔部（７）を設ける。（第３図及び第９図参照）
次いで同穿孔部（７）にコンクリート破砕具（８）の先
端部を挿入して抗頭コンクリートを割裂する．（第４図
参照）
第１１図及び第ｌ２図は前記コンクリート破砕具（８）
による杭頭部コンクリートの割裂状態を示し、前記破砕
具（８）の先端には一双の破砕片（９）が開閉自在に装
架され、同両破砕片（９）の相対するテーパー面間に、
前記破砕具（８）に内蔵された油圧シリンダーによって
進退動される楔片ＱＯＩが貫挿され、同楔片０ω及び前
記両破砕片（９）を杭頭部内の穿孔部（７）に挿入し、
前記楔片θ０を前進させると、第１１図に示すように一
双の破砕片（９）が上下方向に拡開され、抗頭コンクリ
ー１・部を内部より押し拡げ、同抗頭コンクリートを内
部より割裂し、同杭頭コンクリート部分が下部の抗躯体
より絶縁される．なお前記コンクリート破砕具（８）と
して、例えばダルダコンクリートスプリッター（オリエ
ント通商株式会社製）を使用する．
次いで前記杭頭部囚に水平の吊上げ用片００を嵌人する
．同吊上げ用片００としては、例えばブレーカーのピッ
クを使用し、杭頭断面における互いに直交する一対の直
径の各両端部に配設される．前記各吊上げ用片ａＯには
前記吊上部材を構威するチェーンブロック０７Ｊの先端
係止部が係着され、クレーン０団によって吊上げられる
ように用意する一方、第５図に示すように、吊上げ用片
ＯＯとコンクリート基盤面０との間に油圧ジャッキ０４
を介装し、前記チェーンブロック０２１によって割裂さ
れた杭頭部が垂直に吊上げられるようにチェーンブロッ
ク０２ｌの長さをｖＡ節して、引上げバランスを取りな
がら、油圧ジャッキ０４で各吊上げ用片０１）を押し上
げる．図中０９は油圧ポンプである．なお油圧ジャッキ
０４）の反力をとれない場合、基盤面｛Ｑ上に鉄板を敷
いて反力をとるようにする．また前記ジャッキＱ４）の
高さは山留駒材を使用してｉＡ節する．
かくして油圧ジャッキ０４によって前記杭頭部（自）を
ジャッキの最大ストロークまで押し上げた後、同杭頭部
内と抗躯体（（３）との間に仮支持材００を介装し、杭
頭部囚を押上げ位置に仮支持する．（第６図参照）
次いで油圧ジャッキ０４を旧位に復し、同ジャッキ０滲
と基盤面（Ｑとの間に駒材ＯＤを介装し、（第７図参照
）前記ジャッキ０４）によって吊上げ用片００を押上げ
ると同時に、チェーンブロックａつの長さを調整して杭
頭部囚の吊り上げ姿勢をｙ４ｆｉｌながらクレーンａつ
によって杭頭部（４）を引上げる．（第８図参照）
なおこの際、前記杭鉄筋（１）の杭頭部にはボリスチレ
ンフォーム製のパイプカバー（２）が嵌装され、コンク
リート部との付着が断たれているので、前記杭頭部四が
杭鉄筋（１）より抜け出して、容易に吊上げられる．
なお、処理杭頭部が大きい場合、或いはまた吊上げ用Ｊ
ａｎの能力が小さい場合、第１０図に示すように杭頭部
を（＾＋）（Ａｔ）に２分割して引き上げるようにする
．
また杭頭部囚を引上げたのち、パイプカバー（２）が杭
鉄筋（１）についている場合には取り除き、抗頭截断面
をブレーカーによってチッピッグを施し、整形する．
（発明の効果）
本発明によれば前記したように、場所打コンクリート杭
の抗頭処理において、杭頭部における杭鉄筋に予めパイ
プ力バーを嵌着することによって、同鉄筋と周囲のコン
クリートとの付着力を断ち、杭頭部を抗躯体より吊上げ
易いようにしうるものである．
本発明によれば杭頭部に円周方向に亘ってカッターで溝
を穿設することによって、抗頭截断部と周囲の抗躯体コ
ンクリートとの縁を切り、抗頭処理時に抗鳴体における
抗頭截断円周部が大きく欠落することのないようにし、
抗頭処理時に抗径及び基準高を確保することができる．
次いで前記杭頭部にカッターによって穿設された円周溝
位置において削岩機によって直径方向に穿設することに
よって次の杭頭部を割裂する工程を容易ならしめ、同穿
孔部にコンクリート破砕具の一双の破砕片と同両破砕片
の対向テーパ面に模合され、且つ可摺動的に貫挿された
楔片を前記穿孔部に挿入し、同穿孔部の内実部に前記楔
片を進入せしめることによって、前記両破砕片を拡閲せ
しめ、抗頭コンクリート部を杭鉄筋が二重配筋の場合で
も容易に内部より割裂することができる．更に本発明に
よればこの際、杭頭部に複数の水平の吊上げ用片を嵌入
し、同各吊上げ用片を基盤面に設置されたジャッキによ
って押上げることにより、前記のように割裂された杭頭
部の引上げ時の作業が円滑に行なわれる。この際前記各
吊上げ用片に係着された吊上部材をクレーンによって吊
上げるようにしたので、各吊上部材を調整して杭頭部の
吊上げ姿勢を制Ｍしなから同杭頭部を円滑に吊上げるこ
とができる。(See Fig. 2) Next, drilling portions (7) having a diameter of 45 to 48 ms and a depth of 10 cm or more are provided from above the circumferential groove (5) in the diametrical direction by rock drilling m (6). (See Figures 3 and 9)
Next, insert the tip of the concrete crushing tool (8) into the hole (7) to split the head concrete. (See Figure 4) Figures 11 and 12 show the concrete crushing tool (8)
A pair of crushed pieces (9) are attached to the tip of the crushing tool (8) so as to be openable and closable, and a pair of crushed pieces (9) are installed between the opposing tapered surfaces of the crushed pieces (9). ,
A wedge piece QOI that is moved forward and backward by a hydraulic cylinder built into the crushing tool (8) is penetrated, and the wedge piece 0ω and both of the crushed pieces (9) are inserted into the perforation (7) in the pile head. death,
When the wedge piece θ0 is advanced, a pair of crushed pieces (9) are spread out in the vertical direction as shown in FIG. It split, and the concrete part of the pile head became insulated from the lower structural frame. As the concrete crushing tool (8), for example, a Dalda concrete splitter (manufactured by Orient Tsusho Co., Ltd.) is used. Next, a horizontal lifting piece 00 is fitted onto the pile head. For example, a breaker pick is used as the lifting piece 00, and it is arranged at each end of a pair of mutually perpendicular diameters in the cross section of the pile head. The end locking part of the chain block 07J that constitutes the lifting member is attached to each of the lifting pieces aO, and while preparing to be lifted by crane group 0, as shown in FIG. Hydraulic jack 04 is installed between the piece OO and the concrete base surface 0.
The length of the chain block 02l is adjusted to vA so that the pile head split by the chain block 021 can be lifted vertically, and each lifting piece 01 is lifted by a hydraulic jack 04 while maintaining the lifting balance. ) to push up. 09 in the figure is a hydraulic pump. If the reaction force of the hydraulic jack 04) cannot be absorbed, place a steel plate on the base surface {Q to absorb the reaction force. In addition, the height of the jack Q4) shall be set at iA using Yamadome-koma material. In this way, after the pile head (self) is pushed up to the maximum stroke of the jack by the hydraulic jack 04, a temporary support member 00 is interposed between the inside of the pile head and the structural body ((3)), and the pile head is Temporarily support the prisoner in the push-up position. (See Figure 6) Next, return the hydraulic jack 04 to its old position, insert a bridge material OD between the jack 04 and the base surface (Q), and (See Figure 7) While pushing up the lifting piece 00 with the jack 04), at the same time adjusting the length of the chain blocks a and adjusting the lifting posture of the pile head prisoner, lift the pile head (4) with the crane a. (See Figure 8) At this time, a pipe cover (2) made of bolystyrene foam is fitted to the pile head of the pile reinforcing bar (1) to break the attachment to the concrete part. Therefore, the pile head 4 comes out of the pile reinforcing bar (1) and can be easily lifted.
If the capacity of an is small, the pile head should be divided into two parts (＾+)(At) and pulled up as shown in Figure 10. After pulling up the pile head, if the pipe cover (2) is attached to the pile reinforcing bar (1), remove it, and chip the cross section of the pile head with a breaker to shape it. (Effects of the Invention) According to the present invention, as described above, in the head treatment of cast-in-place concrete piles, by fitting the pipe force bar in advance to the pile reinforcing bars at the pile head, the reinforcing bars and the surrounding concrete can be connected to each other. This can break the adhesive force of the pile and make it easier to lift the pile head above the skeleton. According to the present invention, by cutting a groove in the pile head in the circumferential direction with a cutter, the edge of the cut section of the pile head and the surrounding concrete skeleton is cut, and the anti-resistance of the anti-resonance body is cut when the pile head is processed. Make sure that the circumferential part of the head is not missing too much,
The diameter and standard height can be secured during head treatment. Next, a rock drill is used to drill in the diametrical direction at the circumferential groove position drilled in the pile head by the cutter to facilitate the process of splitting the next pile head, and a concrete crushing tool is inserted into the hole. Insert a pair of crushed pieces and a wedge piece shaped into the opposing tapered surfaces of both crushed pieces and slidably inserted into the perforated part, and insert the wedge piece into the inner part of the perforated part. By allowing the pile to enter, both of the crushed pieces can be seen and the concrete head part can be easily split from the inside even if the pile reinforcement is double reinforced. Further, according to the present invention, at this time, a plurality of horizontal lifting pieces are fitted into the pile head, and each lifting piece is pushed up by a jack installed on the base surface, so that the pile is split as described above. The work when pulling up the pile head can be carried out smoothly. At this time, since the lifting members attached to each of the lifting pieces were lifted by a crane, each lifting member was adjusted to control the lifting posture of the pile head. Can be lifted smoothly.
また本発明によれば杭頭部の吊上げ時、杭頭部が大きい
場合や吊上機器の能力に応じて杭頭部で分割して引上げ
ることができ、更に全体としてブレーカーを使用するこ
とが少ないので騒音の発生を防止し、粉塵の飛散を防止
しうるものである。Furthermore, according to the present invention, when lifting a pile head, it is possible to divide the pile head into parts depending on the size of the pile head or the capacity of the lifting equipment, and furthermore, it is possible to use a breaker as a whole. Since the amount of dust is small, it is possible to prevent the generation of noise and the scattering of dust.
更にまた杭頭部における杭鉄筋にパイプカバーが嵌装さ
れていることによって、抗頭処理後の杭鉄筋の清掃作業
が不要となる．Furthermore, since the pipe cover is fitted to the pile reinforcing bars at the pile head, there is no need to clean the pile reinforcing bars after the pile head treatment.
第ｌ図乃至第８図は本発明に係る場所打コンクリート杭
の杭頭処理方法の一実施例の工程を示す正面図、第９図
は第３図の平面図、第１０図は本発明の方法の他の実施
例の実施状況を示す正面図、第１１図及び第１２図はコ
ンクリート破砕只の作動状態を示す縦断面図、第１３図
乃至第ｌ８図は従来の場所打ちコンクリート杭の抗頭処
理方法の工程を示す正面図である。
囚・・・杭頭部、
（０・・・基盤面、
（２）・・・バイプカバー
（５）・・・円周溝、
（７）・・・穿孔部、
（９）・・・破砕片、
（Ｉ Ｉ）・・・吊上げ用片、
Ｑｍ・・・クレーン、
（（３）・・・抗躯体、
（１）・・・杭鉄筋、
（４）・・・カッター
（６）・・・削岩機、
（８）・・・コンクリート破砕具、
Ｏｆｆｌ・・・喫片、
ｑカ・・・チェーンブロック、
０４）・・・油圧ジャッキ。Figures 1 to 8 are front views showing steps of an embodiment of the method for treating the pile head of cast-in-place concrete piles according to the present invention, Figure 9 is a plan view of Figure 3, and Figure 10 is a plan view of the method for treating the pile head of cast-in-place concrete piles according to the present invention. FIGS. 11 and 12 are longitudinal sectional views showing the operating state of concrete crushing, and FIGS. 13 to 18 show the resistance of conventional cast-in-place concrete piles. It is a front view showing the steps of the head processing method. Prisoner: Pile head, (0: Base surface, (2): Vipe cover (5): Circumferential groove, (7): Drilling part, (9): Crushed pieces , (I I)...Lifting piece, Qm...Crane, ((3)...Reinforcement frame, (1)...Pile reinforcing bar, (4)...Cutter (6)... Jackhammer, (8)...Concrete crushing tool, Offl...Crap, Q-chain block, 04)...Hydraulic jack.
Claims (1)
イプカバーを嵌着しておき、前記杭頭部に円周方向に亘
ってカッターで溝を穿設し、次いで同円周溝位置におい
て削岩機で直径方向の穿孔部を設け、次いで破砕具に開
閉自在に装架された一双の破砕片と、同両破砕片の対向
テーパー面に楔合し、且つ可摺動的に嵌挿された楔片と
を前記穿孔部に挿入し、同楔片を穿孔部の内奥部に進入
せしめ、前記両破砕片を拡開せしめて前記抗頭コンクリ
ート部を割裂し、次いで杭頭部に複数の水平の吊上げ用
片を嵌入し、同各吊上げ用片を基盤面に設置されたジャ
ッキで押上げるとともに、同各ジャッキ受片に係着され
た吊上部材をクレーンによって吊上げることを特徴とす
る場所打コンクリート杭の杭頭処理方法。A pipe cover is fitted in advance to the pile reinforcing bars at the head of the cast-in-place concrete pile, and a groove is bored in the pile head in the circumferential direction using a cutter. A diametrical perforation is provided in the hole, and then a pair of shredded pieces is mounted on the shredding tool so as to be openable and closable, and a wedge is slidably inserted and wedged into the opposing tapered surfaces of the shredded pieces. The wedge pieces are inserted into the perforation, the wedge pieces are inserted deep into the perforation, the two pieces are expanded to split the pile concrete head part, and then a plurality of horizontal wedge pieces are inserted into the pile head. A place where lifting pieces are inserted, each lifting piece is pushed up by a jack installed on the base surface, and the lifting member attached to each jack receiving piece is lifted by a crane. Pile cap treatment method for cast concrete piles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24335689A JPH03107017A (en) | 1989-09-21 | 1989-09-21 | Pile head treatment method for cast-in-place concrete pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24335689A JPH03107017A (en) | 1989-09-21 | 1989-09-21 | Pile head treatment method for cast-in-place concrete pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03107017A true JPH03107017A (en) | 1991-05-07 |
Family
ID=17102620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24335689A Pending JPH03107017A (en) | 1989-09-21 | 1989-09-21 | Pile head treatment method for cast-in-place concrete pile |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03107017A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006037492A (en) * | 2004-07-27 | 2006-02-09 | Takenaka Komuten Co Ltd | Pile head processing construction method of cast-in-place concrete pile |
| CN102312429A (en) * | 2011-07-12 | 2012-01-11 | 中铁西北科学研究院有限公司 | Rapid separation and integral hoisting method for pile head of cast-in-place concrete pile |
| CN102493434A (en) * | 2011-11-28 | 2012-06-13 | 中铁大桥局股份有限公司 | Construction method for integrally and quickly hoisting and removing pile head of bored cast-in-place pile |
| JP2015038279A (en) * | 2013-08-19 | 2015-02-26 | 鹿島建設株式会社 | Pile head treatment method and lifting tool |
| JP2016023540A (en) * | 2014-07-16 | 2016-02-08 | 株式会社代伊達屋本舗 | Environmentally-considerate pile head processing method |
| CN105332372A (en) * | 2015-11-18 | 2016-02-17 | 浙江双和环境建设有限公司 | Cast-in-place pile reinforcement cage construction device and process thereof |
| CN106759336A (en) * | 2016-12-19 | 2017-05-31 | 中交路桥建设有限公司 | A kind of cast-in-situ bored pile quickly abolishes pile crown construction method |
| CN115198750A (en) * | 2022-06-21 | 2022-10-18 | 中交二公局铁路建设有限公司 | Cast-in-place pile head blocking and cutting device and method |
-
1989
- 1989-09-21 JP JP24335689A patent/JPH03107017A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006037492A (en) * | 2004-07-27 | 2006-02-09 | Takenaka Komuten Co Ltd | Pile head processing construction method of cast-in-place concrete pile |
| JP4700937B2 (en) * | 2004-07-27 | 2011-06-15 | 株式会社竹中工務店 | Pile head treatment method for cast-in-place concrete piles |
| CN102312429A (en) * | 2011-07-12 | 2012-01-11 | 中铁西北科学研究院有限公司 | Rapid separation and integral hoisting method for pile head of cast-in-place concrete pile |
| CN102493434A (en) * | 2011-11-28 | 2012-06-13 | 中铁大桥局股份有限公司 | Construction method for integrally and quickly hoisting and removing pile head of bored cast-in-place pile |
| CN102493434B (en) * | 2011-11-28 | 2014-04-16 | 中铁大桥局股份有限公司 | Construction method for integrally and quickly hoisting and removing pile head of bored cast-in-place pile |
| JP2015038279A (en) * | 2013-08-19 | 2015-02-26 | 鹿島建設株式会社 | Pile head treatment method and lifting tool |
| JP2016023540A (en) * | 2014-07-16 | 2016-02-08 | 株式会社代伊達屋本舗 | Environmentally-considerate pile head processing method |
| CN105332372A (en) * | 2015-11-18 | 2016-02-17 | 浙江双和环境建设有限公司 | Cast-in-place pile reinforcement cage construction device and process thereof |
| CN106759336A (en) * | 2016-12-19 | 2017-05-31 | 中交路桥建设有限公司 | A kind of cast-in-situ bored pile quickly abolishes pile crown construction method |
| CN115198750A (en) * | 2022-06-21 | 2022-10-18 | 中交二公局铁路建设有限公司 | Cast-in-place pile head blocking and cutting device and method |
| CN115198750B (en) * | 2022-06-21 | 2023-09-19 | 中交二公局铁路建设有限公司 | Cast-in-place pile head blocking and cutting device and method |
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