JPH06280255A - Joint construction of precast concrete pile - Google Patents
Joint construction of precast concrete pileInfo
- Publication number
- JPH06280255A JPH06280255A JP7047593A JP7047593A JPH06280255A JP H06280255 A JPH06280255 A JP H06280255A JP 7047593 A JP7047593 A JP 7047593A JP 7047593 A JP7047593 A JP 7047593A JP H06280255 A JPH06280255 A JP H06280255A
- Authority
- JP
- Japan
- Prior art keywords
- pile
- hole
- flange
- projection
- protrusion
- 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
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プレストレストコンク
リート杭など既製コンクリート杭の継手構造に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure for ready-made concrete piles such as prestressed concrete piles.
【０００２】[0002]
【従来の技術】既製コンクリート杭の継手には、一般に
杭端部に設けた鋼製継手金物同士を溶接することより行
われている。2. Description of the Related Art Joints for ready-made concrete piles are generally made by welding steel joint metal fittings provided at the ends of the piles.
【０００３】かかる溶接継手では、溶接姿勢、温度、湿
度、風等の作業環境が重要であり、雨天および強風時の
作業は不可能となる。また、溶接後の急冷防止および養
生のために数分〜数10分の待ち時間が必要となる。この
待ち時間を取らないと泥水等により溶接部が急冷され悪
影響を与える。In such a welded joint, the work environment such as welding posture, temperature, humidity and wind is important, and work in rainy weather or strong wind becomes impossible. In addition, a waiting time of several minutes to several tens of minutes is required to prevent quenching and curing after welding. If this waiting time is not taken, the welded part is rapidly cooled by muddy water or the like, which has an adverse effect.
【０００４】このような溶接継手の欠点を無くすものと
して、特開平2-213513号公報には上杭と下杭とをアンカ
ーで繋ぎ止めることにより機械的に接合する結合工法が
示されている。In order to eliminate such a drawback of the welded joint, Japanese Patent Application Laid-Open No. 2-213513 discloses a joining method for mechanically joining the upper pile and the lower pile with an anchor.
【０００５】詳しくは、この特開平2-213513号公報のも
のは、接合すべき既製コンクリート杭のうち、一方の杭
の接合端部に、同接合部より杭躯体内央部側にいたるに
ともなって内径が漸大したテーパー付き筒状のアンカー
受筒を定着する。More specifically, according to the Japanese Patent Laid-Open No. 2-213513, among the ready-made concrete piles to be joined, one of the piles is connected to the joint end portion, and the joint portion is closer to the inner side of the pile body. The anchored cylindrical anchor receiving cylinder with the gradually increasing inner diameter is fixed.
【０００６】そして、他方の杭の接合部に、桿体の先端
部に同桿体の中心軸に沿う楔挿入孔を穿設するととも
に、同楔挿入孔と桿体外周面との間に亘って放射状の切
込みを設けたアンカーを定着する。At the joint of the other pile, a wedge insertion hole is formed at the tip of the rod body along the central axis of the rod body, and the wedge insertion hole is provided between the wedge insertion hole and the outer peripheral surface of the rod body. Anchor anchors with radial notches.
【０００７】このようにして、このアンカー突出部を同
先端部の楔挿入孔にセットされた楔とともに前記一方の
杭のアンカー受筒に嵌入するように、同一方の杭上に他
方の杭をセットする。In this way, the other pile is placed on the same pile so that the anchor protrusion is fitted into the anchor receiving tube of the one pile together with the wedge set in the wedge insertion hole at the tip end. set.
【０００８】上杭の重量によってアンカー先端部におけ
る前記切込みによって形成された遊離片を放射状に拡開
して前記アンカー受筒の内周面に圧着せしめ、かくして
前記両杭を機械的に結合する。Due to the weight of the upper pile, the loose pieces formed by the notch at the tip of the anchor are radially expanded and pressed against the inner peripheral surface of the anchor receiving cylinder, thus mechanically connecting the both piles.
【０００９】[0009]
【発明が解決しようとする課題】前記特開平2-213513号
公報の既製コンクリート杭の結合工法は、杭を機械的に
結合する点で溶接接合と比べて施工性を向上させるもの
であるが、アンカーを一本ずつ他の杭のアンカー受筒に
嵌入する合わせ作業が面倒である。The method for joining prefabricated concrete piles disclosed in Japanese Patent Laid-Open No. 2-213513 improves the workability as compared with welding joining in that the piles are mechanically joined. It is troublesome to fit the anchors into the anchor receiving tubes of the other piles one by one.
【００１０】しかもこのアンカーは切込みによって形成
された遊離片を楔で放射状に拡開してアンカー受筒の内
周面に圧着せしめるものであるから、拡開の程度に限界
があり、アンカー受筒とアンカーとはその径に大きな違
いがあるものでは結合が不可能となる。それゆえ、よけ
いにアンカーをアンカー受筒に嵌入することが困難であ
る。In addition, since the anchor is designed to radially expand a loose piece formed by cutting with a wedge and press it against the inner peripheral surface of the anchor receiving cylinder, there is a limit to the extent of expansion and the anchor receiving cylinder. If there is a large difference in the diameter between the anchor and the anchor, it becomes impossible to connect them. Therefore, it is difficult to insert the anchor into the anchor receiving cylinder.
【００１１】本発明の目的は前記従来例の不都合を解消
し、上杭と下杭との機械的接合を行うことにより溶接継
手に比べて施工の合理化を図ることができるとともに、
結合のセットを簡単かつ確実に行うことができ、工期の
短縮が期待できる既製コンクリート杭の継手構造を提供
することにある。The object of the present invention is to eliminate the disadvantages of the conventional example and to mechanically join the upper pile and the lower pile to rationalize the construction as compared with the welded joint.
An object of the present invention is to provide a joint structure for ready-made concrete piles that can be easily and surely set in connection and can be expected to shorten the construction period.
【００１２】[0012]
【課題を解決するための手段】本発明は前記目的を達成
するため、杭径に応じて一方の杭端に適宜間隔で突起を
設け、他方の杭端にはこの突起が挿通する透孔を形成し
たフランジを設け、前記突起を透孔内に差し入れ、か
つ、透孔内の隙間に楔を介在させて固定すること、およ
び、杭端に、端板とこの端板から立上がる杭外周面の補
強バンドを配置し、突起はこの補強バンドから突設する
こと、さらに、杭端のフランジの透孔は周方向への横長
孔であり、突起はこの横長孔に見合う大きさの鉤状係止
端部を有すること、もしくは、杭端に、端板とこの端板
から立下がる杭外周面の補強バンドを配置し、フランジ
下面にはこの補強バンドにも結合するリブを形成するこ
とを要旨とするものである。In order to achieve the above object, the present invention provides projections at one pile end at appropriate intervals according to the pile diameter, and at the other pile end a through hole through which this projection is inserted. Providing a formed flange, inserting the projection into the through hole, and fixing it by interposing a wedge in the gap in the through hole, and an end plate and a pile outer peripheral surface rising from the end plate at the pile end. Reinforcing band should be placed, and the protrusion should be projected from this reinforcing band.Furthermore, the through hole of the flange at the pile end should be a laterally elongated hole in the circumferential direction, and the protrusion should be a hook-shaped engaging member of a size corresponding to this laterally elongated hole. Having a toe, or arranging an end plate and a reinforcing band on the outer peripheral surface of the pile that descends from this end plate at the pile end, and forming a rib that also connects to this reinforcing band on the lower surface of the flange It is what
【００１３】[0013]
【作用】請求項１記載の本発明によれば、一方の杭端に
は突起が適宜間隔で設けられておりこの突起を他方の杭
端のフランジに形成した透孔に差し入れ、かつ、透孔内
の隙間に楔を介在させて固定すると、上杭と下杭は機械
的に結合する。その際、透孔の大きさは突起よりもかな
り大きなもので、突起を差し入れ易くしても、その隙間
は楔で埋めることができる。According to the present invention as set forth in claim 1, projections are provided at one end of the pile at appropriate intervals, and the projections are inserted into the through holes formed in the flange of the other pile end, and the through holes are formed. When wedges are inserted in the inner gap and fixed, the upper and lower piles are mechanically connected. At this time, the size of the through hole is much larger than the protrusion, and even if the protrusion is easily inserted, the gap can be filled with a wedge.
【００１４】請求項２記載の本発明によれば、前記作用
に加えて、突起は端板とこの端板から立上がる杭外周面
の補強バンドで構造的に強度の充分な個所から突設する
ことになる。According to the second aspect of the present invention, in addition to the above-mentioned action, the projection is provided from a portion having sufficient structural strength by the end plate and the reinforcing band on the outer peripheral surface of the pile rising from the end plate. It will be.
【００１５】請求項３記載の本発明によれば、さらに、
突起は鉤状係止端部が杭端のフランジの下側に引っ掛か
り、より強固に結合できる。According to the present invention of claim 3, further,
The hook-shaped locking end of the projection is caught on the lower side of the flange at the pile end, so that the connection can be made more firmly.
【００１６】請求項４記載の本発明によれば、杭端のフ
ランジの強度はリブで補強された高いものとなる。According to the fourth aspect of the present invention, the flange of the pile end has a high strength reinforced by ribs.
【００１７】[0017]
【実施例】以下、図面について本発明の実施例を詳細に
説明する。図１は本発明の既製コンクリート杭の継手構
造の１実施例を示す横断平面図、図２は図１のａ線矢視
図、図３はｂ線矢視図、図４はｃ線矢視図である。Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a cross-sectional plan view showing an embodiment of a joint structure for ready-made concrete piles of the present invention, FIG. 2 is a view taken along the line a in FIG. 1, FIG. 3 is a view taken along the line b, and FIG. It is a figure.
【００１８】図中２は既製杭としてのコンクリート杭で
の下杭、１はこの下杭２に接続する上杭である。これら
上杭１の下端と下杭２の上端の接続面には鋼板による端
板３を配置し、これら端板３から立上がる、または立下
がるように湾曲鋼板による補強バンド４を設け、この補
強バンド４で上杭１の下端と下杭２の上端の外周部を覆
う。In the figure, 2 is a lower pile which is a concrete pile as a ready-made pile, and 1 is an upper pile connected to the lower pile 2. End plates 3 made of steel plates are arranged on the connection surfaces of the lower ends of the upper piles 1 and the upper ends of the lower piles 2, and a reinforcing band 4 made of a curved steel plate is provided so as to rise or fall from these end plates 3 and The band 4 covers the outer periphery of the lower end of the upper pile 1 and the upper end of the lower pile 2.
【００１９】先端を直角に曲げてなる鉤状係止端部５ａ
を有する突起５を杭径に応じて上杭１は下端に適宜間隔
で設けるが、この突起５は前記端板３と補強バンド４で
の構造的強化部分で例えば補強バンド４の側部から突設
させるものとする。A hook-shaped engaging end portion 5a formed by bending the tip at a right angle.
The upper pile 1 is provided with projections 5 having a gap at the lower end as appropriate depending on the pile diameter. The projections 5 are structurally strengthened portions of the end plate 3 and the reinforcement band 4, for example, protruding from the side of the reinforcement band 4. Shall be installed.
【００２０】一方、下杭２はその上端で前記補強バンド
４の周囲にフランジ６を形成するが、図５にも示すよう
にこのフランジ６には前記突起５の先端鉤状係止端部５
ａまで含めた大きさの横長孔である透孔７を周方向へ向
けて穿設する。On the other hand, the lower pile 2 has a flange 6 formed around the reinforcing band 4 at the upper end thereof, and as shown in FIG. 5, the flange 6 has a hook-like locking end portion 5 of the tip of the projection 5.
A through hole 7, which is a laterally long hole having a size including a, is bored in the circumferential direction.
【００２１】また、図４にも示すように前記フランジ６
の下面には補強バンド４の周面にも結合する補強用のリ
ブ８を形成する。Further, as shown in FIG. 4, the flange 6
Reinforcing ribs 8 that are also coupled to the peripheral surface of the reinforcing band 4 are formed on the lower surface of the.
【００２２】このリブ８と前記透孔７の関係は個々相互
に対応するものであるが、透孔７の端はリブ８から鉤状
係止端部５ａの幅分だけ離れており、また、突起５の先
端鉤状係止端部５ａを除いた残りの根本部の幅はフラン
ジ６の厚さとほぼ合致するものである。The relationship between the rib 8 and the through hole 7 corresponds to each other, but the end of the through hole 7 is separated from the rib 8 by the width of the hook-shaped engaging end portion 5a, and The width of the remaining root portion of the projection 5 excluding the hook-like locking end portion 5a of the projection 5 substantially matches the thickness of the flange 6.
【００２３】なお、これら上杭１と下杭２はプレストレ
ストコンクリート杭で、図２に示すように先端の膨大端
部９ａが端板３の孔に係止するＰＣ鋼棒９を内部に配置
している。図５中、10は端板３の孔に並べて設けるプレ
ストレス導入用のネジ孔である。The upper pile 1 and the lower pile 2 are prestressed concrete piles, and as shown in FIG. 2, a PC steel rod 9 having an enlarged end portion 9a at the tip engaging with a hole of the end plate 3 is arranged inside. ing. In FIG. 5, reference numeral 10 denotes a screw hole for introducing prestress, which is provided side by side with the hole of the end plate 3.
【００２４】このようにして下杭２に上杭１を載せる際
に、図７に示すように透孔７に突起５を先端の鉤状係止
端部５ａから差し入れ、この鉤状係止端部５ａが透孔７
から出たところで上杭１を回転させると図８に示すよう
に透孔７内で突起５は端に移動し、鉤状係止端部５ａが
フランジ６の下面に入り、かつ、リブ８に当接する。When the upper pile 1 is placed on the lower pile 2 in this way, the projection 5 is inserted into the through hole 7 from the hook-shaped locking end 5a at the tip as shown in FIG. Portion 5a is through hole 7
When the upper pile 1 is rotated when it comes out of the above, as shown in FIG. 8, the protrusion 5 moves to the end in the through hole 7, the hook-like locking end portion 5a enters the lower surface of the flange 6, and the rib 8 Abut.
【００２５】そして、図６に示すように透孔７内の隙間
に楔12を圧入させて突起５を固定する。Then, as shown in FIG. 6, the wedge 12 is press-fitted into the clearance in the through hole 7 to fix the protrusion 5.
【００２６】ところで、前記実施例は上杭１に突起５
を、下杭２に透孔７を有するフランジ６を設けることと
したが、他の実施例としては図示は省略するがこれを逆
にして上杭１の下端に透孔７を有するフランジ６を設
け、下杭２の上端に突起５を設けるようにすることも可
能である。By the way, in the above-mentioned embodiment, the protrusion 5 is formed on the upper pile 1.
Although the lower pile 2 is provided with the flange 6 having the through hole 7, as another embodiment, although not shown in the drawings, the flange 6 having the through hole 7 at the lower end of the upper pile 1 is reversed. It is also possible to provide the protrusion 5 on the upper end of the lower pile 2.
【００２７】[0027]
【発明の効果】以上述べたように本発明の既製コンクリ
ート杭の継手構造は、上杭と下杭とを機械的接合で接合
することにより溶接継手に比べて施工の合理化を図るこ
とができるとともに、この機械的接合のセットは、透孔
に突起を差し入れ、隙間を楔で埋めるという簡単かつ確
実な作業で行うことができ、工期の短縮が期待できるも
のである。As described above, in the joint structure for ready-made concrete piles according to the present invention, the upper pile and the lower pile can be mechanically joined to each other so that the construction can be rationalized as compared with the welded joint. This mechanical joining set can be carried out by a simple and reliable work of inserting a projection into the through hole and filling the gap with a wedge, and is expected to shorten the construction period.
【図１】本発明の既製コンクリート杭の継手構造１実施
例を示す横断平面図である。FIG. 1 is a cross-sectional plan view showing a joint structure 1 embodiment of a ready-made concrete pile of the present invention.
【図２】図１のａ線矢視図である。FIG. 2 is a view taken along the line a of FIG.
【図３】図１のｂ線矢視図である。FIG. 3 is a view on arrow b in FIG.
【図４】図１のｃ線矢視図である。FIG. 4 is a view taken along line c of FIG.
【図５】下杭上端の平面図である。FIG. 5 is a plan view of the upper end of the lower pile.
【図６】接合後の要部の縦断側面図である。FIG. 6 is a vertical sectional side view of a main part after joining.
【図７】接合前の第１段階の要部の縦断側面図である。FIG. 7 is a vertical sectional side view of a main part of a first stage before joining.
【図８】接合前の第２段階の要部の縦断側面図である。FIG. 8 is a vertical sectional side view of a main part of a second stage before joining.
１…上杭 ２…下杭 ３…端板 ４…補強バンド ５…突起 ５ａ…鉤状係止端部 ６…フランジ ７…透孔 ８…リブ ９…ＰＣ鋼棒 ９ａ…膨大端部 10…ネジ孔 11…ずれ止めピン 12…楔 DESCRIPTION OF SYMBOLS 1 ... Upper pile 2 ... Lower pile 3 ... End plate 4 ... Reinforcing band 5 ... Protrusion 5a ... Hook-like locking end 6 ... Flange 7 ... Through hole 8 ... Rib 9 ... PC steel rod 9a ... Enlarged end 10 ... Screw Hole 11… Lock pin 12… Wedge
Claims (4)
起を設け、他方の杭端にはこの突起が挿通する透孔を形
成したフランジを設け、前記突起を透孔内に差し入れ、
かつ、透孔内の隙間に楔を介在させて固定することを特
徴とした既製コンクリート杭の継手構造。1. A protrusion is provided at one end of the pile at appropriate intervals according to the pile diameter, and a flange having a through hole through which the protrusion is inserted is provided at the other end of the pile, and the protrusion is inserted into the through hole. ,
In addition, a joint structure for ready-made concrete piles characterized in that a wedge is interposed in the gap in the through hole to fix.
外周面の補強バンドを配置し、突起はこの補強バンドか
ら突設する請求項１記載の既製コンクリート杭の継手構
造。2. The joint structure of a prefabricated concrete pile according to claim 1, wherein an end plate and a reinforcing band on the outer peripheral surface of the pile rising from the end plate are arranged at the pile end, and the protrusion projects from the reinforcing band.
孔であり、突起はこの横長孔に見合う大きさの鉤状係止
端部を有する請求項１および請求項２記載の既製コンク
リート杭の継手構造。3. The ready-made product according to claim 1 or 2, wherein the through hole of the flange at the pile end is a laterally elongated hole in the circumferential direction, and the projection has a hook-shaped engaging end portion having a size corresponding to the laterally elongated hole. Joint structure for concrete piles.
外周面の補強バンドを配置し、フランジ下面にはこの補
強バンドにも結合するリブを形成する請求項１および請
求項２記載の既製コンクリート杭の継手構造。4. A pile end is provided with an end plate and a reinforcing band on the outer peripheral surface of the pile extending from the end plate, and a rib is formed on the lower surface of the flange so as to be joined to the reinforcement band. Joint structure for ready-made concrete piles described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7047593A JP2609197B2 (en) | 1993-03-29 | 1993-03-29 | Precast concrete pile joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7047593A JP2609197B2 (en) | 1993-03-29 | 1993-03-29 | Precast concrete pile joint structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06280255A true JPH06280255A (en) | 1994-10-04 |
| JP2609197B2 JP2609197B2 (en) | 1997-05-14 |
Family
ID=13432594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7047593A Expired - Lifetime JP2609197B2 (en) | 1993-03-29 | 1993-03-29 | Precast concrete pile joint structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2609197B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07331650A (en) * | 1994-06-10 | 1995-12-19 | Hiraoka Kinzoku Kogyo Kk | Joint for pile |
-
1993
- 1993-03-29 JP JP7047593A patent/JP2609197B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07331650A (en) * | 1994-06-10 | 1995-12-19 | Hiraoka Kinzoku Kogyo Kk | Joint for pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2609197B2 (en) | 1997-05-14 |
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