JP4951437B2 - Pile head joining method - Google Patents

Pile head joining method Download PDF

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JP4951437B2
JP4951437B2 JP2007198770A JP2007198770A JP4951437B2 JP 4951437 B2 JP4951437 B2 JP 4951437B2 JP 2007198770 A JP2007198770 A JP 2007198770A JP 2007198770 A JP2007198770 A JP 2007198770A JP 4951437 B2 JP4951437 B2 JP 4951437B2
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annular body
hole
pile head
rebar
reinforcing bars
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JP2009035867A (en
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井 勇 作 新
井 文 隆 筏
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木内建設株式会社
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Description

本発明は、杭頭の接合方法に係り、特に、施工が容易な杭頭の接合方法に関する。 The present invention relates to a method of joining the pile head, in particular, relates to a joining method of construction is easy pile head.

杭頭の端部に取り付けられた杭頭端板の複数の雌ねじに、接続鉄筋の端部の雄ねじを前記雌ねじ毎に螺合して、雌ねじを接続するようにしたものがある（例えば、特許文献１参照）。
しかしながら、この接続にあっては、杭頭端板の雌ねじにコンクリートが入る場合があり、また、杭頭端板の雌ねじも各種あって、該雌ねじに螺合する雄ねじを有する接続鉄筋が、設置現場において、準備されていない場合があり、かかる場合、杭頭端板と接続鉄筋の接続が容易でないという問題点が生じた。
特許第３５６８１６８号公報 There is one in which a female screw is connected to a plurality of female screws of a pile head end plate attached to an end of a pile head by screwing a male screw at an end of a connecting rebar for each female screw (for example, a patent) Reference 1).
However, in this connection, concrete may enter the female screw of the pile head end plate, and there are various types of female screws of the pile head end plate, and the connecting rebar having the male screw screwed to the female screw is installed. There is a case where it is not prepared in the field, and in such a case, there is a problem that it is not easy to connect the pile head end plate and the connecting reinforcing bar.
Japanese Patent No. 3568168

本発明は、前記した問題点を除去するようにした施工が容易な杭頭の接合方法を提供することを目的としている。 The present invention aims at the construction which is adapted to remove the problems above-mentioned provides a method of bonding easily pile head.

前記した目的を達成するための請求項１記載の杭頭の接合方法は、杭頭と、この杭頭の端部に取り付けられると共に、中心部が貫通した穴を有する保護鋼板と、この保護鋼板の外径より小さい外径を有する環状体と、この環状体に環状に接合された複数の鉄筋とを備え、中心部が貫通した穴である中心穴部と、この中心穴部より外側に位置し、前記複数の鉄筋を通す穴を環状に配列した鉄筋通し穴部とを有し、前記環状体より上に位置する上方環状体と、前記複数の鉄筋の前記環状体から遠い側の端部には、それぞれ雄ネジが形成され、この複数の鉄筋の雄ネジを前記鉄筋通し穴部にそれぞれ通し、それぞれ通した前記雄ネジの前記鉄筋通し穴部の縁部の上下には、前記雄ネジに螺合する雌ネジを有するナットがそれぞれ設けられ、前記上下にそれぞれ設けられた前記雌ネジを有するナットで前記鉄筋通し穴部の縁部を挟持し、前記杭頭が地中に打ち込まれ、前記保護鋼板が捨てコンクリートより突出した設置現場において、前記環状体と前記保護鋼板を溶接により接合するものである。 The method for joining pile heads according to claim 1 for achieving the above object is a pile head , a protective steel plate attached to an end portion of the pile head and having a hole through which a central portion passes, and the protective steel plate. An annular body having an outer diameter smaller than the outer diameter, and a plurality of reinforcing bars joined annularly to the annular body, and a central hole portion that is a hole through which the central portion penetrates, and is located outside the central hole portion And an upper annular body positioned above the annular body, and an end portion of the plurality of reinforcing bars far from the annular body. Are formed with male screws, and the male screws of the plurality of reinforcing bars are respectively passed through the reinforcing bar through-holes. Nuts having female threads to be screwed onto the upper and lower A nut having a female screw which are provided to sandwich the edge portion of the reinforcing bar through hole, the pile head is driven into the ground, at the installation site where the protective steel sheet protrudes from the concrete discarded, and the annular body The protective steel plate is joined by welding.

また、請求項２記載の杭頭の接合方法は、杭頭と、この杭頭の端部に取り付けられると共に、中心部が貫通した穴を有する保護鋼板と、この保護鋼板の外径より小さい外径を有する環状体と、この環状体に環状に接合された複数の鉄筋とを備え、鉄筋を通す鉄筋通し穴部を有し、前記鉄筋通し穴部より周囲に張り出すドーナツ状の円盤と、前記複数の鉄筋の前記環状体から遠い側の端部には、それぞれ雄ネジが形成され、前記鉄筋の雄ネジ毎に前記ドーナツ状の円盤の鉄筋通し穴部をそれぞれ通し、それぞれ通した前記雄ネジの前記ドーナツ状の円盤の鉄筋通し穴部の縁部の上下には、前記雄ネジに螺合する雌ネジがそれぞれ設けられ、前記上下にそれぞれ設けられた前記雌ネジで前記ドーナツ状の円盤の鉄筋通し穴部の縁部を挟持し、前記杭頭が地中に打ち込まれ、前記保護鋼板が捨てコンクリートより突出した設置現場において、前記環状体と前記保護鋼板を溶接により接合するものである。 The bonding method of claim 2 wherein the pile head, and the pile head, with attached to the end of the pile head, and a protective steel sheet having a hole center is penetrated, the outer diameter smaller than the outside of the protective steel An annular body having a diameter, and a plurality of reinforcing bars joined in an annular shape to the annular body, having a reinforcing bar through-hole portion through which the reinforcing bar passes, and a donut-shaped disk protruding around the reinforcing bar through-hole portion; Male screws are respectively formed on the ends of the plurality of reinforcing bars that are far from the annular body, and the male screws that pass through the reinforcing bar through holes of the donut-shaped disk for each male screw of the reinforcing bars. Female screws to be screwed into the male screws are respectively provided above and below the edge portions of the reinforcing bar through-holes of the donut-shaped disk of the screws, and the donut-shaped disks are provided by the female screws provided above and below, respectively. rebar through sandwiching the edge of the hole, the Head is driven into the ground, at the installation site where the protective steel sheet protrudes from the concrete discarded, it is intended to be joined by welding the protective steel plate and the annular body.

また、請求項３記載の杭頭の接合方法は、請求項１又は請求項２記載の杭頭の接合方法において、溶接による接合部位は、保護鋼板の上面と環状体の側面とに亘るものである。 The bonding method of claim 3, wherein the pile head, in the bonding method according to claim 1 or claim 2 wherein the pile head, the bonding site by welding, one over the sides of the upper surface and the annular body of the protective steel is there.

請求項１記載の杭頭の接合方法によれば、環状体に環状に接合された複数の鉄筋を利用して、設置現場で前記環状体を杭頭の端部に取り付けられた保護鋼板に溶接により接合するため、施工が容易であり、また、中心部が貫通した穴である中心穴部と、この中心穴部より外側に位置し、複数の鉄筋を通す穴を環状に配列した鉄筋通し穴部とを有し、前記環状体より上に位置する上方環状体と、前記複数の鉄筋を前記環状に配列した鉄筋通し穴部を介して取り付け、前記環状体より上に前記上方環状体を位置させ固定するものであるため、上方環状体による受圧面積の増大を図ることができ、その分、環状体の平坦面に接合された複数の鉄筋の高さ寸法を小さくすることができる。 According to the method for joining pile heads according to claim 1 , the annular body is welded to a protective steel plate attached to an end of the pile head at an installation site by using a plurality of reinforcing bars joined annularly to the annular body. for joining by, construction the easier it der, also a central bore center is a hole penetrating located outside than this central bore, the bore through a plurality of reinforcing bars through rebar arranged annularly An upper annular body positioned above the annular body, and a plurality of reinforcing bars attached via the reinforcing bar through holes, the upper annular body being disposed above the annular body. Since it is positioned and fixed, the pressure receiving area by the upper annular body can be increased, and accordingly, the height dimension of the plurality of reinforcing bars joined to the flat surface of the annular body can be reduced.

また、請求項２記載の杭頭の接合方法によれば、環状体に環状に接合された複数の鉄筋を利用して、設置現場で前記環状体を杭頭の端部に取り付けられた保護鋼板に溶接により接合するため、施工が容易であり、また、鉄筋を通す鉄筋通し穴部を有し、前記鉄筋通し穴部より周囲に張り出すドーナツ状の円盤と、前記複数の鉄筋の前記環状体から遠い側の端部には、それぞれ雄ネジが形成され、前記鉄筋の雄ネジ毎に前記ドーナツ状の円盤の鉄筋通し穴部をそれぞれ通し、それぞれ通した前記雄ネジの前記ドーナツ状の円盤の鉄筋通し穴部の縁部の上下には、前記雄ネジに螺合する雌ネジがそれぞれ設けられ、前記上下にそれぞれ設けられた前記雌ネジで前記ドーナツ状の円盤の鉄筋通し穴部の縁部を挟持するため、鉄筋の雄ネジ毎にドーナツ状の円盤 、前記ドーナツ状の円盤の鉄筋通し穴部の縁部を上下に設けた雄ネジに螺合して挟持する雌ネジ等による受圧面積の増大を図ることができ、その分、環状体の平坦面に接合された複数の鉄筋の高さ寸法を小さくすることができる。 Moreover, according to the method for joining pile heads according to claim 2, the protective steel plate in which the annular body is attached to the end of the pile head at the installation site using a plurality of reinforcing bars joined annularly to the annular body. Since it is joined by welding, it is easy to construct, and has a rebar through-hole portion for passing a rebar, a donut-shaped disk projecting around from the rebar through-hole portion, and the annular body of the plurality of rebars Male threads are formed at the ends on the side far from each of the rebars, and the doughnut-shaped discs of the doughnut-shaped discs that are passed through the respective through-holes of the donut-shaped discs for the respective male screws of the rebars. Female screws that are threadedly engaged with the male screw are respectively provided above and below the edge portion of the rebar through hole portion, and the edge portion of the rebar through hole portion of the donut-shaped disk by the female screw provided above and below, respectively. For each screw of the reinforcing bar. The pressure receiving area can be increased by a female screw or the like that is screwed into a male screw provided on the upper and lower sides of the rebar through-hole portion of the donut-shaped disk. The height dimension of the plurality of reinforcing bars joined to the flat surface can be reduced.

本発明の一実施例の杭頭の接合方法を図面を参照して説明する。 図１は、設置現場において、杭頭１が地中に打ち込まれ、保護鋼板１１が捨てコンクリート２より突出した状態にあって、環状体３と保護鋼板４を溶接により接合した状態を示している。
杭頭１は、例えば、中心部が貫通した穴を有する筒状部材で、保護鋼板４は、杭頭１の端部に取り付けられるもので、保護鋼板４は、中心部が貫通した穴４１を有する。
また、環状体３は、保護鋼板４の外径より小さい外径を有するもので、中心部が貫通した穴３１を有する。環状体３は、図１（ａ）に示すように、リング状でも良く、図示しないが多角形でも良い。
また、３３は、環状体３に環状に接合された複数の鉄筋で、具体的には、環状体３の平坦面３２に間隔を設けて立設すると共に、平坦面３２に接合（例えば、溶接であり、溶接部位は、Ｗ1）された複数（例えば、６個）の鉄筋である。
また、平坦面３２に間隔を設けて接合された複数の鉄筋３３を有する環状体３を、設置現場で製作しても良いが、望ましくは、予め、工場等で製作するのが良い。
また、環状体３と保護鋼板４を図１（ｂ）に示すように、溶接（溶接部位は、Ｗ2）により接合する。
なお、上述した捨てコンクリート２は、例えば、割栗地業などの上に打つ約５ｃｍ程度のならしコンクリートであり、捨てコンクリート２の上には、保護鋼板４に接合された複数の鉄筋３３を埋没させるために流し込む基礎スラブ（図示せず）が位置するようになる。 A method for joining pile heads according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a state in which the pile head 1 is driven into the ground, the protective steel plate 11 protrudes from the discarded concrete 2 and the annular body 3 and the protective steel plate 4 are joined by welding at the installation site. .
The pile head 1 is, for example, a cylindrical member having a hole through which the central portion passes, and the protective steel plate 4 is attached to the end portion of the pile head 1, and the protective steel plate 4 has a hole 41 through which the central portion passes. Have.
The annular body 3 has an outer diameter smaller than the outer diameter of the protective steel plate 4 and has a hole 31 through which the central portion passes. The annular body 3 may be ring-shaped as shown in FIG. 1A, or may be polygonal although not shown.
Reference numeral 33 denotes a plurality of reinforcing bars that are annularly joined to the annular body 3. Specifically, the reinforcing bars 33 are erected at intervals on the flat surface 32 of the annular body 3 and are joined to the flat surface 32 (for example, welded). The welding site is a plurality of (for example, 6) reinforcing bars W1).
The annular body 3 having a plurality of reinforcing bars 33 joined to the flat surface 32 at intervals may be manufactured at the installation site, but it is preferable to manufacture the annular body 3 in advance at a factory or the like.
Further, as shown in FIG. 1B, the annular body 3 and the protective steel plate 4 are joined by welding (the welded portion is W2).
The above-mentioned discarded concrete 2 is, for example, a leveled concrete of about 5 cm hitting on the split chestnut industry, and a plurality of reinforcing bars 33 bonded to the protective steel plate 4 are provided on the discarded concrete 2. A foundation slab (not shown) to be poured to be buried is positioned.

従って、この図１及び図２記載の実施例の杭頭の接合構造によれば、平坦面３２に間隔を設けて接合された複数の鉄筋３３を有する環状体３を利用して、設置現場で環状体３を杭頭１の端部に取り付けられた保護鋼板４に溶接により接合するため、従来のような「保護鋼板１１の雌ねじ１１ａ（杭頭端板の雌ねじ）」を利用しない分、施工が容易な杭頭の接合構造を得ることができる。     Therefore, according to the pile head joining structure of the embodiment described in FIGS. 1 and 2, the annular body 3 having the plurality of reinforcing bars 33 joined at intervals to the flat surface 32 is used at the installation site. Since the annular body 3 is joined to the protective steel plate 4 attached to the end of the pile head 1 by welding, the construction is not performed because the conventional “female screw 11a of the protective steel plate 11 (female screw of the pile head end plate)” is not used. However, it is possible to obtain a pile head joining structure that is easy.

上述した実施例においては、環状体３に環状に接合された複数の鉄筋３３の接合する部位を環状体３の平坦面３２としたが、本発明にあっては、これに限らず、例えば、図３及び図４記載の鋼管３’の壁面でも良い。該壁面は、内壁でも又外壁でも良い。
即ち、上述した実施例と同一部分に同一符号を付して説明すると、３３は、環状体３’（例えば、具体的には、鋼管３’）に環状に接合された複数の鉄筋で、鋼管３’の内壁（又は、図示しないが、鋼管３’の外壁に複数の鉄筋３３を環状に接合しても良い。）に間隔を設けて立設する複数（例えば、１０個）の鉄筋で、複数の鉄筋３３は、鋼管３’の内壁に接合されている。接合は、例えば、溶接で、溶接部位はＷ3である。
４は、上述と同様、杭頭１の端部に取り付けられる保護鋼板で、保護鋼板４は、中心部が貫通した穴４１を有する。
鋼管３’は、保護鋼板４の外径より小さい外径を有し、中心部が貫通した穴３１’を有する。鋼管３’は、図３（ａ）に示すように、平面視、略リング状でも良いが、図示しないが多角形でも良い。
また、内壁に間隔を設けて接合された複数の鉄筋３３を有する鋼管３’を、設置現場で製作しても良いが、望ましくは、予め、工場等で製作するのが良い。
また、鋼管３’と保護鋼板４を図３（ｂ）に示すように、溶接（溶接部位は、Ｗ4） により接合する。
この図３及び図４記載の実施例の杭頭の接合構造によれば、図１及び図２記載の実施例の杭頭の接合構造と同様、鋼管３’の内壁に接合された複数の鉄筋３３を有する鋼管３’を利用して、設置現場で鋼管３’を杭頭１の端部に取り付けられた保護鋼板４に溶接により接合するため、従来のような「保護鋼板４の雌ねじ４２（杭頭端板の雌ねじ、例えば、図６参照」）」を利用しない分、施工が容易な杭頭の接合構造を得ることができる。 In the above-described embodiment, the portion where the plurality of reinforcing bars 33 joined in an annular shape to the annular body 3 is the flat surface 32 of the annular body 3, but the present invention is not limited to this, for example, The wall surface of the steel pipe 3 ′ shown in FIGS. 3 and 4 may be used. The wall surface may be an inner wall or an outer wall.
That is, when the same reference numerals are given to the same parts as those in the above-described embodiment, reference numeral 33 denotes a plurality of reinforcing bars that are annularly joined to an annular body 3 ′ (for example, specifically, a steel pipe 3 ′). A plurality of (for example, 10) reinforcing bars standing at intervals on the inner wall of 3 '(or, although not shown, a plurality of reinforcing bars 33 may be annularly joined to the outer wall of the steel pipe 3'), The plurality of reinforcing bars 33 are joined to the inner wall of the steel pipe 3 ′. The joining is, for example, welding, and the welding site is W 3 .
4 is the protective steel plate attached to the edge part of the pile head 1 like the above, and the protective steel plate 4 has the hole 41 which the center part penetrated.
The steel pipe 3 ′ has an outer diameter smaller than the outer diameter of the protective steel plate 4, and has a hole 31 ′ through which the center portion passes. As shown in FIG. 3A, the steel pipe 3 'may have a substantially ring shape in plan view, but may be a polygonal shape (not shown).
Further, the steel pipe 3 ′ having a plurality of reinforcing bars 33 joined to each other at intervals on the inner wall may be manufactured at the installation site, but is preferably manufactured in advance at a factory or the like.
Further, a protective steel sheet 4 with the steel pipe 3 'as shown in FIG. 3 (b), welding (welding site, W 4) are joined by.
According to the pile head joining structure of the embodiment shown in FIGS. 3 and 4, a plurality of reinforcing bars joined to the inner wall of the steel pipe 3 ′, similar to the pile head joining structure of the embodiment shown in FIGS. 1 and 2. In order to join the steel pipe 3 ′ to the protective steel plate 4 attached to the end of the pile head 1 by welding using the steel pipe 3 ′ having 33, a conventional “female screw 42 of the protective steel plate 4 ( Since the internal thread of the pile head end plate, for example, see FIG. 6)) ”is not used, a pile head joining structure that is easy to construct can be obtained.

上述した図１及び図２の実施例においては、複数の鉄筋３３の端部を拘束していないが、本発明にあっては、これに限らず、図５及び図６記載のように複数の鉄筋３３’の端部を拘束するようにしても良い。
即ち、上述した図１及び図２記載の実施例と同一部分に同一符号を付して説明すると 、図５及び図６において、５は、中心部が貫通した穴である中心穴部５ａと、この中心穴部５ａより外側に位置し、複数の鉄筋３３’を通す穴を環状に配列した鉄筋通し穴部５ｂとを有し、環状体３より上に位置する上方環状体である。
複数の鉄筋３３’を環状に配列した鉄筋通し穴部５ｂを介して取り付け、環状体３より上に上方環状体５を位置させ、固定する（固定は、例えば、ナット６、７、又は、図示しないが溶接による）。
次に、ナット６、７による固定について、説明すると、複数の鉄筋３３’の環状体３から遠い側の端部には、それぞれ雄ネジ３３’ａが形成され、この複数の鉄筋３３’の雄ネジ３３’ａを鉄筋通し穴部５ｂにそれぞれ通し、それぞれ通した雄ネジ３３’ａの鉄筋通し穴部５ｂの縁部の上下には、雄ネジ３３’ａに螺合する雌ネジを有するナット６、７がそれぞれ設けられ、これら上下にそれぞれ設けられた雌ネジを有するナット６、７で鉄筋通し穴部５ｂの縁部を挟持するようになっている。
この図５及び図６記載の杭頭の接合構造によれば、図１及び図２の実施例の効果に 加え、上方環状体５、上方環状体５の鉄筋通し穴部５ｂの縁部を上下に設けた雄ネジに螺合して挟持する雌ネジを有するナット６、７等による受圧面積の増大を図ることができ、その分、環状体３の平坦面３１に接合された複数の鉄筋３３’の高さ寸法を小さくすることができる。
その結果、複数の鉄筋３３’を埋没させるために流し込む基礎スラブ（図示せず）の厚みを小さくすることができる。 In the embodiment of FIGS. 1 and 2 described above, the ends of the plurality of reinforcing bars 33 are not constrained. However, in the present invention, the present invention is not limited to this, and a plurality of ends as shown in FIGS. You may make it restrain the edge part of reinforcing bar 33 '.
That is, the same parts as those in the embodiment described in FIGS. 1 and 2 are described with the same reference numerals. In FIGS. 5 and 6, reference numeral 5 denotes a central hole part 5a which is a hole through which the central part passes, This is an upper annular body located on the outer side of the annular body 3 and having a reinforcing bar through-hole part 5b in which holes through which the plurality of reinforcing bars 33 ′ are passed are arranged in an annular shape.
A plurality of reinforcing bars 33 ′ are attached via the reinforcing bar through holes 5 b arranged in an annular shape, and the upper annular body 5 is positioned and fixed above the annular body 3 (fixing is, for example, nuts 6, 7, or illustrated) Not by welding).
Next, fixing by the nuts 6 and 7 will be described. Male screws 33'a are formed at the ends of the plurality of reinforcing bars 33 'far from the annular body 3, and the males of the plurality of reinforcing bars 33' are formed. Screws 33'a are respectively passed through the reinforcing bar through holes 5b, and nuts having female threads that are screwed into the male screws 33'a above and below the edge of the reinforcing bar through hole 5b of the male screw 33'a. 6 and 7 are provided, and the edges of the reinforcing bar through hole 5b are sandwiched between nuts 6 and 7 having female screws provided above and below, respectively.
According to the pile head joint structure shown in FIGS. 5 and 6, in addition to the effects of the embodiment of FIGS. 1 and 2, the upper annular body 5 and the edge of the reinforcing bar through hole 5 b of the upper annular body 5 are moved up and down. It is possible to increase the pressure receiving area by the nuts 6, 7 having female screws that are screwed into the male screws provided on the male screws, and a plurality of reinforcing bars 33 joined to the flat surface 31 of the annular body 3 correspondingly. 'Height dimension can be reduced.
As a result, the thickness of the foundation slab (not shown) that is poured to bury the plurality of reinforcing bars 33 'can be reduced.

上述した図５及び図６記載の実施例においては、上方環状体５を設けて複数の鉄筋３３の端部を拘束したが、本願発明にあっては、これに限らず、上方環状体５に代えて、ドーナツ状の円盤５’でも良い。
即ち、ドーナツ状の円盤５’は、図７及び図８に示すように、鉄筋３３’を通す鉄筋通し穴部５’ｂを有し、鉄筋通し穴部５’ｂより周囲に張り出すようになっている。
このドーナツ状の円盤５’を鉄筋通し穴部’ｂを介して、鉄筋３３’に取り付けると共に、鉄筋３３’に固定（固定は、例えば、ナット６、７、又は、図示しないが溶接による）する。鉄筋３３’は、図７及び図８に示すように、複数あって、この複数の鉄筋３３毎に、ドーナツ状の円盤５’が固定されるようになっている。
次に、ナット６、７による固定について、説明すると、複数の鉄筋３３’の環状体３から遠い側の端部には、それぞれ雄ネジ３３’ａが形成され、鉄筋３３’の雄ネジ３３’ａ毎にドーナツ状の円盤５’の鉄筋通し穴部５’ｂをそれぞれ通し、それぞれ通した雄ネジ３３’ａのドーナツ状の円盤５’の鉄筋通し穴部５’ｂの縁部の上下には、雄ネジ３３’ａに螺合する雌ネジを有するナット６、７がそれぞれ設けられ、上下にそれぞれ設けられた雌ネジを有するナット６、７でドーナツ状の円盤５’の鉄筋通し穴部５’ｂの縁部を挟持するようになっている。
この図７及び図８記載の杭頭の接合構造によれば、図１及び図２の実施例の効果に加え、鉄筋３３’の雄ネジ３３’ａ毎にドーナツ状の円盤５’、ドーナツ状の円盤５’の鉄筋通し穴部５’ｂの縁部を上下に設けた雄ネジに螺合して挟持するナット６、７等による受圧面積の増大を図ることができ、その分、環状体３の平坦面３１に接合された複数の鉄筋３３’の高さ寸法を小さくすることができる。
その結果、複数の鉄筋３３’を埋没させるために流し込む基礎スラブ（図示せず）の厚みを小さくすることができる。 5 and 6 described above, the upper annular body 5 is provided and the ends of the plurality of reinforcing bars 33 are constrained. However, the present invention is not limited to this, and the upper annular body 5 is not limited thereto. Instead, a donut-shaped disk 5 ′ may be used.
That is, as shown in FIGS. 7 and 8, the donut-shaped disk 5 ′ has a rebar through-hole portion 5 ′ b through which the rebar 33 ′ passes, and protrudes to the periphery from the rebar through-hole portion 5 ′ b. It has become.
The doughnut-shaped disk 5 ′ is attached to the reinforcing bar 33 ′ via the reinforcing bar through-hole portion “b” and fixed to the reinforcing bar 33 ′ (fixed by, for example, nuts 6 and 7 or welding (not shown)). . As shown in FIGS. 7 and 8, there are a plurality of reinforcing bars 33 ′, and a donut-shaped disk 5 ′ is fixed to each of the plurality of reinforcing bars 33.
Next, fixing by the nuts 6 and 7 will be described. Male screws 33'a are formed at the ends of the plurality of reinforcing bars 33 'on the side far from the annular body 3, and the male threads 33' of the reinforcing bars 33 '. For each a, the rebar through-hole 5'b of the donut-shaped disk 5 'is passed through, and above and below the edge of the rebar-through hole 5'b of the donut-shaped disk 5' of the male screw 33'a passed through each a. Are provided with nuts 6 and 7 each having a female screw threadedly engaged with the male screw 33′a, and the nuts 6 and 7 each having a female screw provided on the upper and lower sides, respectively, and a reinforcing bar through hole portion of the donut-shaped disk 5 ′. The edge of 5'b is clamped.
7 and FIG. 8, in addition to the effects of the embodiment of FIGS. 1 and 2, in addition to the effects of the embodiment of FIGS. 1 and 2, the doughnut-shaped disk 5 ′ and the donut shape for each male thread 33′a of the reinforcing bar 33 ′. Can increase the pressure receiving area by the nuts 6, 7 etc. that are screwed into the male screws provided on the upper and lower sides of the rebar through hole 5 ′ b of the disk 5 ′. The height dimension of the plurality of reinforcing bars 33 ′ joined to the three flat surfaces 31 can be reduced.
As a result, the thickness of the foundation slab (not shown) that is poured to bury the plurality of reinforcing bars 33 'can be reduced.

また、上述した図３及び図４の実施例においては、複数の鉄筋３３の端部を拘束していないが、本願発明にあっては、これに限らず、図９及び図１０記載のように複数の鉄筋３３’の端部を拘束するようにしても良い。
即ち、上述した図３及び図４の実施例と同一部分に同一符号を付して説明すると、図９及び図１０において、５は、中心部が貫通した穴である中心穴部５ａと、この中心穴部５ａより外側に位置し、複数の鉄筋３３’を通す穴を環状に配列した鉄筋通し穴部５ｂとを有し、鋼管３’より上に位置する上方環状体である。
複数の鉄筋３３’を環状に配列した鉄筋通し穴部（図示せず）を介して取り付け、環状体３’（例えば、鋼管３’）より上に上方環状体５を位置させ、固定する（固定は、例えば、ナット６、７、又は、図示しないが溶接による）。
次に、ナット６、７による固定について、説明すると、複数の鉄筋３３’の鋼管３’から遠い側の端部には、それぞれ雄ネジ３３’ａが形成され、この複数の鉄筋３３’の雄ネジ３３’ａを鉄筋通し穴部（図示せず）にそれぞれ通し、それぞれ通した雄ネジ３３’ａの鉄筋通し穴部（図示せず）の縁部の上下には、雄ネジ３３’ａに螺合する雌ネジを有するナット６、７がそれぞれ設けられ、これら上下にそれぞれ設けられた雌ネジを有するナット６、７で鉄筋通し穴部（図示せず）の縁部を挟持するようになっている。
この図９及び図１０記載の杭頭の接合構造によれば、図１及び図２の実施例の効果に加え、上方環状体５、上方環状体５の鉄筋通し穴部（図示せず）の縁部を上下に設けた雄ネジに螺合して挟持する雌ネジを有するナット６、７等による受圧面積の増大を図ることができ、その分、鋼管３’に接合された複数の鉄筋３３’の高さ寸法を小さくすることができる。
その結果、複数の鉄筋３３’を埋没させるために流し込む基礎スラブ（図示せず）の厚みを小さくすることができる。 Moreover, in the embodiment of FIGS. 3 and 4 described above, the ends of the plurality of reinforcing bars 33 are not constrained. However, the present invention is not limited to this, as shown in FIGS. 9 and 10. You may make it restrain the edge part of some rebar 33 '.
That is, the same parts as those in the embodiment shown in FIGS. 3 and 4 are described with the same reference numerals. In FIGS. 9 and 10, reference numeral 5 denotes a central hole portion 5 a that is a hole through which the central portion passes, The upper annular body is located above the steel pipe 3 ′ and has a reinforcing bar through hole 5 b in which holes through which a plurality of reinforcing bars 33 ′ are annularly arranged are positioned outside the central hole 5 a.
A plurality of reinforcing bars 33 ′ are attached via reinforcing bar through holes (not shown) arranged in an annular shape, and the upper annular body 5 is positioned above the annular body 3 ′ (for example, steel pipe 3 ′) and fixed (fixed) (For example, nuts 6 and 7 or welding (not shown)).
Next, fixing by the nuts 6 and 7 will be described. Male screws 33'a are formed at the ends of the plurality of reinforcing bars 33 'on the side far from the steel pipe 3', and the males of the plurality of reinforcing bars 33 'are formed. Screws 33'a are respectively passed through rebar through holes (not shown), and male screws 33'a are respectively provided above and below the edges of the rebar through holes (not shown) of the male screws 33'a passed therethrough. Nuts 6 and 7 having female threads to be screwed are provided, and the edges of the reinforcing bar through holes (not shown) are sandwiched between the nuts 6 and 7 having female threads provided above and below, respectively. ing.
According to the pile head joint structure shown in FIGS. 9 and 10, in addition to the effects of the embodiment of FIGS. 1 and 2, the upper annular body 5, the reinforcing bar through holes (not shown) of the upper annular body 5 are provided. The pressure receiving area can be increased by the nuts 6, 7, etc., having female screws that are screwed into the male screws provided on the upper and lower edges, and accordingly, a plurality of reinforcing bars 33 joined to the steel pipe 3 ′. 'Height dimension can be reduced.
As a result, the thickness of the foundation slab (not shown) that is poured to bury the plurality of reinforcing bars 33 'can be reduced.

上述した図９及び図１０記載の実施例においては、上方環状体５を設けて複数の鉄筋３３の端部を拘束したが、本願発明にあっては、これに限らず、上方環状体５に代えて、ドーナツ状の円盤５’でも良い。
即ち、ドーナツ状の円盤５’は、図１１及び図１２に示すように、鉄筋３３’を通す鉄筋通し穴部（図示せず）を有し、鉄筋通し穴部（図示せず）より周囲に張り出すようになっている。
このドーナツ状の円盤５’を鉄筋通し穴部（図示せず）を介して、鉄筋３３’に取り付けると共に、鉄筋３３’に固定（固定は、例えば、ナット６、７、又は、図示しないが溶接による）する。鉄筋３３’は、図１１及び図１２に示すように、複数あって、この複数の鉄筋３３’毎に、ドーナツ状の円盤５’が固定されるようになっている。
次に、ナット６、７による固定について、説明すると、複数の鉄筋３３’の鋼管３’から遠い側の端部には、それぞれ雄ネジ３３’ａが形成され、鉄筋３３’の雄ネジ３３’ａ毎にドーナツ状の円盤５’の鉄筋通し穴部（図示せず）をそれぞれ通し、それぞれ通した雄ネジ３３’ａのドーナツ状の円盤５’の鉄筋通し穴部（図示せず）の縁部の上下には 、雄ネジ３３’ａに螺合する雌ネジを有するナット６、７がそれぞれ設けられ、上下にそれぞれ設けられた雌ネジを有するナット６、７でドーナツ状の円盤５’の鉄筋通し穴部（図示せず）の縁部を挟持するようになっている。
この図１１及び図１２記載の杭頭の接合構造によれば、図３及び図４の実施例の効果に加え、鉄筋３３’の雄ネジ３３’ａ毎にドーナツ状の円盤５’、ドーナツ状の円盤５’の鉄筋通し穴部（図示せず）の縁部を上下に設けた雄ネジに螺合して挟持するナット６、７等による受圧面積の増大を図ることができ、その分、鋼管３’に接合された複数の鉄筋３３’の高さ寸法を小さくすることができる。
その結果、複数の鉄筋３３’を埋没させるために流し込む基礎スラブ（図示せず）の厚みを小さくすることができる。 In the embodiment shown in FIGS. 9 and 10 described above, the upper annular body 5 is provided and the ends of the plurality of reinforcing bars 33 are constrained. Instead, a donut-shaped disk 5 ′ may be used.
That is, as shown in FIGS. 11 and 12, the doughnut-shaped disk 5 ′ has a reinforcing bar through hole (not shown) through which the reinforcing bar 33 ′ passes, and around the reinforcing bar through hole (not shown). Overhangs.
The donut-shaped disk 5 ′ is attached to the reinforcing bar 33 ′ via a reinforcing bar through hole (not shown) and fixed to the reinforcing bar 33 ′ (fixing is performed by, for example, nuts 6 and 7 or welding (not shown). ). As shown in FIGS. 11 and 12, there are a plurality of reinforcing bars 33 ′, and a donut-shaped disk 5 ′ is fixed to each of the plurality of reinforcing bars 33 ′.
Next, fixing by the nuts 6 and 7 will be described. Male screws 33'a are formed at the ends of the plurality of reinforcing bars 33 'on the side far from the steel pipe 3', and the male threads 33 'of the reinforcing bars 33' are respectively formed. Reinforcing bar holes (not shown) of the donut-shaped disk 5 'are passed through each a, and the edges of the reinforcing bar through-hole parts (not shown) of the donut-shaped disk 5' of the male screw 33'a passed through each a. At the top and bottom of the portion, nuts 6 and 7 having female threads that are screwed into the male threads 33'a are provided, respectively, and the nuts 6 and 7 having female threads provided at the top and bottom respectively are used to form the donut-shaped disk 5 '. The edge part of a reinforcing-bar through-hole part (not shown) is clamped.
11 and FIG. 12, in addition to the effect of the embodiment of FIGS. 3 and 4, in addition to the effect of the embodiment of FIGS. 3 and 4, a donut-shaped disk 5 ′ and a donut shape for each male thread 33′a of the reinforcing bar 33 ′. Can increase the pressure receiving area by the nuts 6 and 7 etc. that are screwed into the male screws provided on the upper and lower sides of the rebar through holes (not shown) of the disk 5 '. The height dimension of the plurality of reinforcing bars 33 ′ joined to the steel pipe 3 ′ can be reduced.
As a result, the thickness of the foundation slab (not shown) that is poured to bury the plurality of reinforcing bars 33 'can be reduced.

図１（ａ）は、本発明の一実施例の杭頭の接合方法に使用される杭頭の接合構造の概略的平面図であり、図１（ｂ）は、図１（ａ）の概略的断面図である。Fig.1 (a) is a schematic plan view of the pile head joining structure used for the pile head joining method of one Example of this invention, FIG.1 (b) is the outline of Fig.1 (a). FIG. 図２は、図１の杭頭の接合構造の接合前の状態を示す概略的断面図である。FIG. 2 is a schematic cross-sectional view showing a state before joining of the pile head joining structure of FIG. 1. 図３（ａ）は、図１の杭頭の接合構造と異なる他の実施例の杭頭の接合構造の概略的平面図であり、図３（ｂ）は、図３（ａ）の概略的断面図である。FIG. 3 (a) is a schematic plan view of a pile head joint structure of another embodiment different from the pile head joint structure of FIG. 1, and FIG. 3 (b) is a schematic diagram of FIG. 3 (a). It is sectional drawing. 図４は、図３の杭頭の接合構造の接合前の状態を示す概略的断面図である。FIG. 4 is a schematic cross-sectional view showing a state before joining of the pile head joining structure of FIG. 3. 図５（ａ）は、図３の杭頭の接合構造と異なる他の実施例の杭頭の接合構造の概略的平面図であり、図５（ｂ）は、図５（ａ）の概略的断面図である。FIG. 5 (a) is a schematic plan view of a pile head joint structure of another embodiment different from the pile head joint structure of FIG. 3, and FIG. 5 (b) is a schematic diagram of FIG. 5 (a). It is sectional drawing. 図６は、図５の杭頭の接合構造の接合前の状態を示す概略的断面図である。FIG. 6 is a schematic cross-sectional view showing a state before joining of the pile head joining structure of FIG. 5. 図７（ａ）は、図５の杭頭の接合構造と異なる他の実施例の杭頭の接合構造の概略的平面図であり、図７（ｂ）は、図７（ａ）の概略的断面図である。FIG. 7A is a schematic plan view of a pile head joint structure of another embodiment different from the pile head joint structure of FIG. 5, and FIG. 7B is a schematic plan view of FIG. 7A. It is sectional drawing. 図８は、図７の杭頭の接合構造の接合前の状態を示す概略的断面図である。FIG. 8 is a schematic cross-sectional view showing a state before joining of the pile head joining structure of FIG. 7. 図９（ａ）は、図７の杭頭の接合構造と異なる他の実施例の杭頭の接合構造の概略的平面図であり、図９（ｂ）は、図９（ａ）の概略的断面図である。FIG. 9 (a) is a schematic plan view of a pile head joint structure of another embodiment different from the pile head joint structure of FIG. 7, and FIG. 9 (b) is a schematic plan view of FIG. 9 (a). It is sectional drawing. 図１０は、図９の杭頭の接合構造の接合前の状態を示す概略的断面図である。FIG. 10 is a schematic cross-sectional view showing a state before joining of the pile head joining structure of FIG. 9. 図１１（ａ）は、図９の杭頭の接合構造と異なる他の実施例の杭頭の接合構造の概略的平面図であり、図１１（ｂ）は、図１１（ａ）の概略的断面図である。FIG. 11A is a schematic plan view of a pile head joint structure of another embodiment different from the pile head joint structure of FIG. 9, and FIG. 11B is a schematic plan view of FIG. 11A. It is sectional drawing. 図１２は、図１１の杭頭の接合構造の接合前の状態を示す概略的断面図である。FIG. 12 is a schematic cross-sectional view showing a state before joining of the pile head joining structure of FIG. 11.

符号の説明Explanation of symbols

１ …………杭頭
３ …………環状体
４ …………保護鋼板
３３ …………鉄筋 1 ………… Pile head 3 ………… Annular body 4 ………… Protective steel plate 33 ………… Rebar

Claims (3)

杭頭と、
この杭頭の端部に取り付けられると共に、中心部が貫通した穴を有する保護鋼板と、
この保護鋼板の外径より小さい外径を有する環状体と、
この環状体に環状に接合された複数の鉄筋とを備え、
中心部が貫通した穴である中心穴部と、この中心穴部より外側に位置し、前記複数の鉄筋を通す穴を環状に配列した鉄筋通し穴部とを有し、前記環状体より上に位置する上方環状体と、
前記複数の鉄筋の前記環状体から遠い側の端部には、それぞれ雄ネジが形成され、
この複数の鉄筋の雄ネジを前記鉄筋通し穴部にそれぞれ通し、それぞれ通した前記雄ネジの前記鉄筋通し穴部の縁部の上下には、前記雄ネジに螺合する雌ネジを有するナットがそれぞれ設けられ、
前記上下にそれぞれ設けられた前記雌ネジを有するナットで前記鉄筋通し穴部の縁部を挟持し、
前記杭頭が地中に打ち込まれ、前記保護鋼板が捨てコンクリートより突出した設置現場において、
前記環状体と前記保護鋼板を溶接により接合する
ことを特徴とする杭頭の接合方法。 Pile head,
A protective steel plate that is attached to the end of this pile head and has a hole through which the center passes,
An annular body having an outer diameter smaller than the outer diameter of the protective steel sheet;
With a plurality of reinforcing bars joined annularly to this annular body,
A central hole that is a hole through which the central part penetrates, and a reinforcing bar through hole that is located outside the central hole and in which the holes through which the plurality of reinforcing bars pass are arranged in an annular shape, and above the annular body An upper annular body located;
Male threads are formed at the ends of the plurality of reinforcing bars on the side far from the annular body,
A plurality of nuts having a female screw that is screwed into the male screw are provided above and below the edge of the rebar through-hole portion of the male screw that is passed through each of the rebar through-hole portions. Each provided,
Sandwiching the edge of the rebar through hole with a nut having the female screw provided above and below,
In the installation site where the pile head is driven into the ground and the protective steel plate is thrown away from the concrete,
A method for joining pile heads, comprising joining the annular body and the protective steel plate by welding. 杭頭と、
この杭頭の端部に取り付けられると共に、中心部が貫通した穴を有する保護鋼板と、
この保護鋼板の外径より小さい外径を有する環状体と、
この環状体に環状に接合された複数の鉄筋とを備え、
鉄筋を通す鉄筋通し穴部を有し、前記鉄筋通し穴部より周囲に張り出すドーナツ状の円盤と、
前記複数の鉄筋の前記環状体から遠い側の端部には、それぞれ雄ネジが形成され、
前記鉄筋の雄ネジ毎に前記ドーナツ状の円盤の鉄筋通し穴部をそれぞれ通し、それぞれ通した前記雄ネジの前記ドーナツ状の円盤の鉄筋通し穴部の縁部の上下には、前記雄ネジに螺合する雌ネジがそれぞれ設けられ、
前記上下にそれぞれ設けられた前記雌ネジで前記ドーナツ状の円盤の鉄筋通し穴部の縁部を挟持し、
前記杭頭が地中に打ち込まれ、前記保護鋼板が捨てコンクリートより突出した設置現場において、
前記環状体と前記保護鋼板を溶接により接合する
ことを特徴とする杭頭の接合方法。 Pile head,
A protective steel plate that is attached to the end of this pile head and has a hole through which the center passes,
An annular body having an outer diameter smaller than the outer diameter of the protective steel sheet;
With a plurality of reinforcing bars joined annularly to this annular body,
A donut-shaped disk having a rebar through-hole portion for passing a rebar, and projecting from the rebar through-hole portion to the periphery;
Male threads are formed at the ends of the plurality of reinforcing bars on the side far from the annular body,
For each male thread of the rebar, the rebar through hole of the donut-shaped disk is passed through, and above and below the edge of the rebar through hole of the donut-shaped disk of the male thread, A female screw to be screwed is provided,
The edge of the reinforcing bar through-hole portion of the donut-shaped disk is sandwiched between the female screws provided above and below,
In the installation site where the pile head is driven into the ground and the protective steel plate is thrown away from the concrete,
A method for joining pile heads, comprising joining the annular body and the protective steel plate by welding. 溶接による接合部位は、保護鋼板の上面と環状体の側面とに亘るものであること
を特徴とする請求項１又は請求項２記載の杭頭の接合方法。 The joint part by welding shall extend over the upper surface of the protective steel plate and the side surface of the annular body.
The method of joining pile heads according to claim 1 or claim 2, characterized in that .
JP2007198770A 2007-07-31 2007-07-31 Pile head joining method Expired - Fee Related JP4951437B2 (en)

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JP4430738B1 (en) * 2009-09-30 2010-03-10 サンロード・スチール株式会社 Pile head anchorage foundation
JP2014047560A (en) * 2012-08-31 2014-03-17 Asahi Kasei Construction Materials Co Ltd Joint jig and joint method
CN104759771A (en) * 2015-03-31 2015-07-08 北京首航艾启威节能技术股份有限公司 Porous welding reinforcement piece

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JPH0516840U (en) * 1991-07-31 1993-03-02 大成建設株式会社 PC pile head reinforcement structure
JP3568168B2 (en) * 1995-03-08 2004-09-22 岡部株式会社 Connection structure of pile head connection rebar and its pile head connection rebar
JP3886390B2 (en) * 2001-02-15 2007-02-28 株式会社ジオトップ Pile and footing joint structure
JP2002242176A (en) * 2001-02-16 2002-08-28 Geotop Corp Anchoring structure for pile head anchor bar
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