JP4110729B2 - Foundation pile head structure - Google Patents

Foundation pile head structure Download PDF

Info

Publication number
JP4110729B2
JP4110729B2 JP2000311073A JP2000311073A JP4110729B2 JP 4110729 B2 JP4110729 B2 JP 4110729B2 JP 2000311073 A JP2000311073 A JP 2000311073A JP 2000311073 A JP2000311073 A JP 2000311073A JP 4110729 B2 JP4110729 B2 JP 4110729B2
Authority
JP
Japan
Prior art keywords
pile head
foundation pile
steel pipe
pile
fitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2000311073A
Other languages
Japanese (ja)
Other versions
JP2002115248A (en
Inventor
政信 岡本
真 池田
嘉之 小國
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.)
Sumitomo Metal Industries Ltd
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP2000311073A priority Critical patent/JP4110729B2/en
Publication of JP2002115248A publication Critical patent/JP2002115248A/en
Application granted granted Critical
Publication of JP4110729B2 publication Critical patent/JP4110729B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Piles And Underground Anchors (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、建造物の基礎杭として地盤中に施工された鋼管杭、鋼管コンクリート杭またはコンクリート杭などの基礎杭頭部の構造に関する。
【0002】
【従来の技術】
鉄筋コンクリート構造の基礎として、フーチングまたは基礎スラブ(以下「フーチング」という)直下の地盤の耐力があまり期待できないために、フーチングを介して伝えられる上部構造の応力を、耐力が期待できる地盤まで杭によって伝える杭基礎が知られている。
【0003】
この場合の基礎杭として、例えば鋼管杭または鋼管コンクリート杭などが使用され、これらの杭頭部はフーチングと一体に接合されている。これまで、基礎杭の杭頭部をフーチングと一体的に接合する方法としては、例えば図7(a)に図示するような、基礎杭20の上端部に杭頭部とフーチングとを接合するための接合鉄筋21として鉄筋かごを突設する鉄筋かご方式、図7(b)に図示するような、基礎杭20の上端部の外周に接合鉄筋21を直接溶接して突設するひげ筋方式、図7(c)に図示するような、基礎杭20の上端部の外周にねじ式カプラーまたはナット22を溶接し、このカプラーまたはナット22に接合鉄筋21を螺合して突設するカプラー方式が知られている。
【0004】
いずれの方式においても、基礎杭20の上端部に突設された接合鉄筋21がフーチングのコンクリート内に定着されることで、基礎杭20の杭頭部とフーチグとが一体的に接合される。
【0005】
【発明が解決しようとする課題】
しかし、鉄筋かご方式の場合、接合鉄筋21としての鉄筋かごは鋼管杭20aの上端部に充填されたコンクリート20b内に挿入して突設されることから、鉄筋の配筋スペースがせまく、過密配筋になりやすい。このため困難な施工を強いられるだけでなく、力学性能が劣る等の課題があった。
【0006】
また、ひげ筋方式には現場溶接の品質保証が難しい等の課題があり、カプラー方式には鉄筋かご方式やひげ筋方式の上述するような問題点は解決できるものの、コスト高になる等の課題があった。
【0007】
また、カプラー方式の場合、多角柱状のカプラーを鋼管杭の外周に直接溶接して取り付ける際、例えば図7(c)に図示するようにカプラー22の一側面を鋼管杭20aの側面部に当接させ、その両端部を鋼管杭20aに溶接することとなるが、この溶接がきわめて面倒なものであった。
【0008】
しかも、カプラー22を鋼管杭20aの外周に溶接できても、この両端の溶接部間の距離mがきわめて短いため、基礎杭20が水平方向に力Pを受けた時などにモーメント抵抗が小さく、力学的な弱点になりやすいという問題があった。
【0009】
このようなカプラー方式の問題点を解決する方法が、例えば特開平11−247184号公報に掲載されている。
本公報に掲載の方法では、図7(d)に図示するようにカプラー(ねじ孔付接続具)の代わりに通常の鋼管23を使ってねじ鉄筋からなる接合鉄筋21を固定するため、コスト的にはカプラー方式に比べて改善されるが、鋼管23を杭頭部の外周に溶接するのは、多角柱のカプラー22を溶接する場合よりもさらに困難なだけでなく、溶接部が力学的弱点であることにかわりがない。
【0010】
さらに、カプラー方式と異なり、鋼管23に接合鉄筋21としてねじ鉄筋を貫通させて固定するためには、鋼管23の下端部と上端部から接合鉄筋21に固定ナット24と25をそれぞれ締め付ける必要があり、この場合、杭頭部の外周に鋼管23を取り付けた後から下側の固定ナット24を接合鉄筋21に締め付けるのは容易でない。
【0011】
また、接合鉄筋21に作用する軸力は固定ナット24および25を介して鋼管23に伝達されるが、鋼管23の断面力は接合鉄筋21の軸力と同程度になるため、かなり肉厚の鋼管を必要とし、現実的でない等の課題がある。
【0012】
この発明は、以上の課題を解決するためになされたもので、基礎杭の頭部に杭頭部とフーチングとを接合するため接合鉄筋を簡単かつ確実に取り付けることができて、施工性の向上と経済施工を可能にした基礎杭頭部の構造を提供することを目的とする。
【0013】
【課題を解決するための手段】
請求項1記載の基礎杭頭部の構造は、杭頭部の外周に取り付けられた接続金具に接合鉄筋が固定されてなる基礎杭頭部の構造において、前記接続金具は、前記杭頭部の外周に取り付けられて中空部を形成する側部金具と、この側部金具の上下に設けられた支圧板とから形成され、前記接合鉄筋は前記上下の支圧板を貫通して設けられていることを特徴とする。
【0014】
ここで、側部金具としては、杭頭部に取り付けて形成される中空部に接合鉄筋を配置することができるものであればよく、中空部の断面が半円形、台形、三角形等となるものなど様々な形状のもを用いることができるが、例えば溝形鋼を適当な長さに切断したもの、適当な長さに切断した2本のL形鋼を溝形状に突き合わせ、溶接したもの等を使用することができる。
【0015】
また、中空部の断面は必ずしも閉じている必要はなく、前述の例ではL形鋼の突き合わせ部分に隙間があっても構わないが、その場合は接合鉄筋が通らないような隙間とすることが望ましい。
【0016】
支圧板は側部金具の上下に設けられて、接合鉄筋が側部金具に対して上下方向に移動するのを拘束するので、側部金具と支圧板とを溶接により固定しない場合には設置時に側部金具の断面を通過しない形状とする必要がある。
【0017】
上下の支圧板の間隔が長いほどせん断力に抵抗する力が大きくなるので、側部金具はできるだけ長い方が好ましいが、支圧板は必ずしも側部金具の上端よりも上部と側部金具の下端よりも下部とする必要はなく、側部金具内の中間部に取り付けられていてもよい。
【0018】
請求項2記載の基礎杭頭部の構造は、請求項1記載の基礎杭頭部の構造において、支圧板は側部金具の上端部と下端部にそれぞれ溶接により取り付けられていることを特徴とする。
【0019】
請求項3記載の基礎杭頭部の構造は、請求項1または2記載の基礎杭頭部の構造において、中空部に固化材が充填されていることを特徴とする。固化材としては、モルタルまたはコンクリート等を用いることができる。これらの固化材を充填することにより接合鉄筋の固定度を向上させたり、腐食対策を行うことができる。
【0020】
【発明の実施の形態】
発明の実施の形態
図1〜図3は、この発明に係る基礎杭頭部の構造の一例を示し、図において基礎杭として施工された鋼管杭1の上端部の外周に、接続金具2が鋼管杭1の周方向に所定間隔おきに複数突設され、この接続金具2に鋼管杭1の杭頭部をその上側に施工されたフーチング3に接合するための接合鉄筋4としてねじ鉄筋がそれぞれ突設されている。
【0021】
接続金具2は、側部金具2aとこの側部金具2aの上端部と下端部にそれぞれ取り付けられた二枚の支圧板2bおよび2cとから形成されている。
側部金具2aは鋼管杭1側に開口し、かつ鋼管杭1の上下方向に連続する断面ほぼ溝形状に形成されている。また、側部金具2aは鋼管杭1の外側部に両側のフランジ2d,2dの先端をそれぞれ上下方向に連続溶接することにより取り付けられている。
【0022】
なお、側部金具2aには、例えば溝形鋼を適当な長さに切断したものが使用され、その際、接合鉄筋4に作用する軸力の大きさ等を参酌して側部金具2aの長さが適宜決められている。
【0023】
支圧板2bと2cはともに、中央に接合鉄筋4を貫通させるための貫通孔2eを有し、側部金具2aの上端側と下端側にそれぞれ溶接によって取り付けられている。また、上側の支圧板2bと鋼管杭1との間には一定の隙間sが設けられ、下側の支圧板2cは鋼管杭1の外周に密着させて取り付けられている。その際、支圧板2cの鋼管杭1との当接部は鋼管杭1の外側部に隙間なく密着するように、鋼管杭1の外周に沿って円弧状に形成されている。
【0024】
なお、支圧板2bと2cはともに、側部金具2aと同様に接合鉄筋4に作用する軸力の大きさ等を参酌して厚さが適宜決められている。
接合鉄筋4は接続金具2に上下の支圧板2bおよび2cの貫通孔2eと側部金具2a内を鋼管杭1の軸方向に連続して貫通し、上端側が上方向に所定長さ延びている。
【0025】
そして、支圧板2bの上側と支圧板2cの下側から接合鉄筋4に固定ナット5aと5bがそれぞれ螺合されている。こうして、接合鉄筋4は接続金具2を介して鋼管杭1の外周に上方に向けて突設されている。なお、接合鉄筋4にはねじ鉄筋の他に丸鋼なども使用されている。
【0026】
このような構成において、接合鉄筋4に作用する軸力は定着ナット5aおよび5b、上下の支圧板2bおよび2c、側部金具2a、そして鋼管杭1へと確実に伝達される。
【0027】
なお、図4〜図6に図示するように、各接続金具2の上側の支圧板2bの代わりとして、各接続金具2の上側の支圧板2bが鋼管杭1の円周方向に連続するリング状に形成された1枚の支圧板6(図6(a)参照)を、また下側の支圧板2cの代わりとして支圧板6を半割りにした支圧板7(図6(b)参照)を使用してもよい。
【0028】
このような支圧板6と7を使用することで、効率的な作業をおこなうことができるとともに、杭頭部の剛性を高めることができる。
また、図3(b)に図示するように側部金具2aと上下の支圧板2bおよび2cとで形成される中空部8に隙間sからモルタルやコンクリート等の固化材9を充填することで、接続金具の剛性を高め、接合鉄筋4に作用する軸力を鋼管杭1により確実に伝達させることができる。
【0029】
【発明の効果】
この発明は、以上説明したとおりであり、特に接続金具の側部金具は杭頭部の外周に取り付けられて中空部を形成するように形成されていることで、両側フランジの先端を円弧状をなす杭頭部の外周に溶接により簡単かつ確実に取り付けることができ、また側部金具が溝形状をなす場合、溝形鋼を適当な長さに切断したものを側部金具として使用できるので特別なものを必要とせず、施工性の向上と経済施工が図れる。
【0030】
また、接合鉄筋が、側部金具内とこの側部金具の上端部と下端部にそれぞれ溶接された上下の支圧板を貫通して設けられていることで、上下支圧板の上側と下側から接合鉄筋に固定ナットを螺合したり、または上下の支圧板に接合鉄筋を溶接する等の方法により、接合鉄筋を接続金具に確実に定着させることができる。
【0031】
さらに、中空部に固化材が充填されていることで、接合鉄筋を接続金具により確実に定着させることができる。
【図面の簡単な説明】
【図1】(a)〜(c)は基礎杭頭部の構造を示す一部斜視図である。
【図2】接続金具および接合鉄筋の取付状態を示す基礎杭頭部の一部斜視図である。
【図3】接続金具および接合鉄筋の取付状態を示す基礎杭頭部の一部を示し、(a)はその平面図、(b)は縦断面図、(c)は正面図である。
【図4】基礎杭頭部の構造を示し、(a)はその正面図、(b)は平面図である。
【図5】基礎杭頭部の構造を示し、(a)はその分解正面図、(b)は平面図である。
【図6】(a),(b)は支圧板の他の例を示す平面図である。
【図7】(a)〜(c)は従来の基礎杭頭部の構造を示す縦断面図、(d)はその一部側面図、(e)は一部平面図である。
【符号の説明】
1 鋼管杭
2 接続金具
2a 側部金具
2b 支圧板
2c 支圧板
2d フランジ
3 フーチング
4 接合鉄筋
5a 固定ナット
5b 固定ナット
6 支圧板
7 支圧板
8 中空部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the structure of a foundation pile head such as a steel pipe pile, a steel pipe concrete pile or a concrete pile constructed in the ground as a foundation pile of a building.
[0002]
[Prior art]
As the foundation of the reinforced concrete structure, the strength of the ground directly below the footing or foundation slab (hereinafter referred to as “footing”) cannot be expected so much, so the stress of the superstructure transmitted through the footing is transmitted to the ground where the strength can be expected by the pile. Pile foundation is known.
[0003]
As the foundation pile in this case, for example, a steel pipe pile or a steel pipe concrete pile is used, and these pile heads are joined together with the footing. Until now, as a method of joining the pile head of the foundation pile integrally with the footing, for example, to join the pile head and the footing to the upper end portion of the foundation pile 20 as illustrated in FIG. Reinforcing bar cage method in which a reinforcing bar cage is projected as the joining reinforcing rod 21 of the bar, and as shown in FIG. As shown in FIG. 7C, there is a coupler method in which a threaded coupler or nut 22 is welded to the outer periphery of the upper end portion of the foundation pile 20, and a joining rebar 21 is screwed to the coupler or nut 22 to project. Are known.
[0004]
In either method, the joint rebar 21 protruding from the upper end of the foundation pile 20 is fixed in the concrete of the footing, so that the pile head of the foundation pile 20 and the foot are joined together.
[0005]
[Problems to be solved by the invention]
However, in the case of the rebar cage method, the rebar cage as the joining rebar 21 is inserted and protruded into the concrete 20b filled in the upper end of the steel pipe pile 20a. Easy to become a streak. For this reason, there are problems such as not only forced construction but also poor mechanical performance.
[0006]
In addition, there is a problem that quality assurance of on-site welding is difficult for the beard bar method, and the above problem of the rebar basket method and the beard bar method can be solved for the coupler method, but the problem is high cost, etc. was there.
[0007]
In the case of the coupler method, when a polygonal column-shaped coupler is directly welded and attached to the outer periphery of the steel pipe pile, for example, as shown in FIG. 7 (c), one side surface of the coupler 22 abuts on the side surface portion of the steel pipe pile 20a. However, both ends thereof are welded to the steel pipe pile 20a, but this welding is extremely troublesome.
[0008]
Moreover, even if the coupler 22 can be welded to the outer periphery of the steel pipe pile 20a, since the distance m between the welded portions at both ends is extremely short, the moment resistance is small when the foundation pile 20 receives a force P in the horizontal direction, There was a problem that it was easy to become a mechanical weak point.
[0009]
A method for solving such problems of the coupler system is disclosed in, for example, Japanese Patent Application Laid-Open No. 11-247184.
In the method disclosed in this publication, as shown in FIG. 7 (d), since a normal steel pipe 23 is used instead of a coupler (connector with a screw hole), a joining rebar 21 made of a screw rebar is fixed. However, it is not only more difficult to weld the steel pipe 23 to the outer periphery of the pile head than the case of welding the polygonal coupler 22, but the welded portion has a mechanical weakness. There is no substitute for being.
[0010]
Furthermore, unlike the coupler method, in order to fix the threaded rebar as a joining rebar 21 to the steel pipe 23, it is necessary to fasten the fixing nuts 24 and 25 to the joining rebar 21 from the lower end and the upper end of the steel pipe 23, respectively. In this case, it is not easy to fasten the lower fixing nut 24 to the joint rebar 21 after the steel pipe 23 is attached to the outer periphery of the pile head.
[0011]
Further, the axial force acting on the joining rebar 21 is transmitted to the steel pipe 23 via the fixing nuts 24 and 25. However, since the cross-sectional force of the steel pipe 23 is almost the same as the axial force of the joining rebar 21, it is considerably thick. It requires steel pipes and is not realistic.
[0012]
The present invention was made to solve the above problems, and it is possible to easily and surely attach a joint rebar to join the pile head and footing to the head of the foundation pile, thereby improving workability. It aims at providing the structure of the foundation pile head which enabled economic construction.
[0013]
[Means for Solving the Problems]
The structure of the foundation pile head according to claim 1 is the structure of a foundation pile head in which a joining reinforcing bar is fixed to a connection fitting attached to the outer periphery of the pile head. It is formed from a side fitting that is attached to the outer periphery to form a hollow portion, and a bearing plate provided at the top and bottom of the side fitting, and the joining reinforcing bar is provided through the upper and lower bearing plates. It is characterized by.
[0014]
Here, as a side metal fitting, what can arrange | position joining reinforcement in the hollow part formed by attaching to a pile head is sufficient, and the cross section of a hollow part becomes a semicircle, a trapezoid, a triangle, etc. Various shapes such as those can be used. For example, a grooved steel cut to an appropriate length, two L-shaped steels cut to an appropriate length, butted into a groove shape, and welded. Can be used.
[0015]
Moreover, the cross section of the hollow portion does not necessarily have to be closed, and in the above-described example, there may be a gap in the L-shaped steel butting portion. desirable.
[0016]
Since the support plate is provided above and below the side fittings and restrains the joint rebars from moving up and down with respect to the side fittings, if the side fitting and the bearing plate are not fixed by welding, It is necessary to make it the shape which does not pass the cross section of a side metal fitting.
[0017]
The longer the gap between the upper and lower bearing plates, the greater the resistance to shearing force, so the side bracket is preferably as long as possible, but the bearing plate is not necessarily the upper end of the side bracket and the lower end of the side bracket. Also, it is not necessary to use the lower part, and it may be attached to an intermediate part in the side fitting.
[0018]
The structure of the foundation pile head according to claim 2 is characterized in that, in the structure of the foundation pile head according to claim 1, the bearing plates are respectively attached to the upper end portion and the lower end portion of the side metal fittings by welding. To do.
[0019]
The structure of the foundation pile head according to claim 3 is the structure of the foundation pile head according to claim 1 or 2, wherein the hollow portion is filled with a solidifying material. As the solidifying material, mortar or concrete can be used. By filling these solidifying materials, it is possible to improve the degree of fixing of the reinforcing bars and to take countermeasures against corrosion.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
1 to 3 show an example of the structure of a foundation pile head according to the present invention. In the figure, a connecting fitting 2 is a steel pipe on the outer periphery of an upper end portion of a steel pipe pile 1 constructed as a foundation pile. A plurality of protrusions are provided at predetermined intervals in the circumferential direction of the pile 1, and screw rebars protrude as connecting rebars 4 for joining the pile heads of the steel pipe piles 1 to the footings 3 constructed on the upper side thereof. It is installed.
[0021]
The connection fitting 2 is formed of a side fitting 2a and two bearing plates 2b and 2c attached to the upper end and the lower end of the side fitting 2a, respectively.
The side metal fitting 2a is formed in a substantially groove shape in cross section that opens to the steel pipe pile 1 side and that continues in the vertical direction of the steel pipe pile 1. Moreover, the side metal fitting 2a is attached to the outer part of the steel pipe pile 1 by continuously welding the tips of the flanges 2d and 2d on both sides in the vertical direction.
[0022]
The side metal fitting 2a is made of, for example, a grooved steel cut to an appropriate length. At this time, the magnitude of the axial force acting on the joint reinforcing bar 4 is taken into consideration, and the side metal fitting 2a The length is appropriately determined.
[0023]
Both of the bearing plates 2b and 2c have a through hole 2e for allowing the joint rebar 4 to pass through in the center, and are attached to the upper end side and the lower end side of the side metal fitting 2a by welding, respectively. A fixed gap s is provided between the upper bearing plate 2 b and the steel pipe pile 1, and the lower bearing plate 2 c is attached in close contact with the outer periphery of the steel pipe pile 1. At that time, the contact portion of the bearing plate 2c with the steel pipe pile 1 is formed in an arc shape along the outer periphery of the steel pipe pile 1 so as to be in close contact with the outer portion of the steel pipe pile 1 without a gap.
[0024]
Note that the thickness of each of the support plates 2b and 2c is appropriately determined in consideration of the magnitude of the axial force acting on the joint reinforcing bar 4 as in the case of the side fitting 2a.
The joining reinforcing bar 4 penetrates through the through hole 2e of the upper and lower bearing plates 2b and 2c and the side fitting 2a continuously in the axial direction of the steel pipe pile 1 through the connection fitting 2, and the upper end side extends upward by a predetermined length. .
[0025]
Then, fixing nuts 5a and 5b are screwed to the joint reinforcing bar 4 from the upper side of the bearing plate 2b and the lower side of the bearing plate 2c, respectively. In this way, the joint reinforcing bar 4 protrudes upward on the outer periphery of the steel pipe pile 1 via the connection fitting 2. In addition to the threaded rebar, round steel or the like is used for the joining rebar 4.
[0026]
In such a configuration, the axial force acting on the joining rebar 4 is reliably transmitted to the fixing nuts 5a and 5b, the upper and lower bearing plates 2b and 2c, the side fitting 2a, and the steel pipe pile 1.
[0027]
As shown in FIGS. 4 to 6, instead of the upper support plate 2 b of each connection fitting 2, a ring shape in which the upper support plate 2 b of each connection fitting 2 is continuous in the circumferential direction of the steel pipe pile 1. And a support plate 7 (see FIG. 6B) in which the support plate 6 is halved instead of the lower support plate 2c. May be used.
[0028]
By using such pressure bearing plates 6 and 7, efficient work can be performed and the rigidity of the pile head can be increased.
In addition, by filling the hollow portion 8 formed by the side metal fitting 2a and the upper and lower bearing plates 2b and 2c as shown in FIG. 3 (b) with a solidifying material 9 such as mortar or concrete from the gap s, The rigidity of the connection fitting can be increased and the axial force acting on the joint rebar 4 can be reliably transmitted by the steel pipe pile 1.
[0029]
【The invention's effect】
The present invention is as described above, and in particular, the side metal fittings of the connection metal fittings are attached to the outer periphery of the pile head so as to form a hollow portion, so that the tips of both side flanges have an arc shape. It can be easily and securely attached to the outer periphery of the pile head made by welding, and when the side bracket has a groove shape, it is special because it can be used as a side bracket after cutting the grooved steel to an appropriate length. It is possible to improve workability and economical construction without needing anything.
[0030]
In addition, since the joint reinforcing bars are provided through the upper and lower bearing plates welded to the side fitting and the upper and lower ends of the side fitting, respectively, from above and below the upper and lower bearing plates. The joining rebar can be reliably fixed to the connection fitting by a method such as screwing a fixing nut onto the joining rebar or welding the joining rebar to the upper and lower bearing plates.
[0031]
Furthermore, since the hollow portion is filled with the solidifying material, the joining rebar can be reliably fixed by the connection fitting.
[Brief description of the drawings]
1A to 1C are partial perspective views showing the structure of a foundation pile head portion.
FIG. 2 is a partial perspective view of a foundation pile head showing a mounting state of a connection fitting and a joining reinforcing bar.
FIGS. 3A and 3B show a part of a foundation pile head portion showing a mounting state of connecting fittings and joint reinforcing bars, FIG. 3A is a plan view thereof, FIG. 3B is a longitudinal sectional view, and FIG.
FIG. 4 shows the structure of a foundation pile head, where (a) is a front view thereof and (b) is a plan view.
5A and 5B show the structure of a foundation pile head, where FIG. 5A is an exploded front view and FIG. 5B is a plan view.
FIGS. 6A and 6B are plan views showing another example of a bearing plate.
7A to 7C are longitudinal sectional views showing the structure of a conventional foundation pile head, FIG. 7D is a partial side view thereof, and FIG. 7E is a partial plan view thereof.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Steel pipe pile 2 Connection metal fitting 2a Side metal fitting 2b Support pressure plate 2c Support pressure plate 2d Flange 3 Footing 4 Joint reinforcement 5a Fixing nut 5b Fixing nut 6 Support pressure plate 7 Support pressure plate 8 Hollow part

Claims (3)

杭頭部の外周に取り付けられた接続金具に接合鉄筋が固定されてなる基礎杭頭部の構造において、前記接続金具は、前記杭頭部の外周に取り付けられて中空部を形成する側部金具と、この側部金具の上下に設けられた支圧板とから形成され、前記接合鉄筋は前記上下の支圧板を貫通して設けられていることを特徴とする基礎杭頭部の構造。In the structure of the foundation pile head in which the joining rebar is fixed to the connection fitting attached to the outer periphery of the pile head, the connection fitting is attached to the outer periphery of the pile head to form a hollow part. And the structure of the foundation pile head characterized by being formed from the bearing plate provided in the upper and lower sides of this side metal fitting, and the said joining reinforcing bar penetrating through the said upper and lower bearing plates. 支圧板は、側部金具の上端部と下端部にそれぞれ溶接により取り付けられていることを特徴とする請求項1記載の基礎杭頭部の構造。 The structure of a foundation pile head according to claim 1, wherein the support plate is attached to each of an upper end portion and a lower end portion of the side metal fitting by welding. 中空部に固化材が充填されていることを特徴とする請求項1または2記載の基礎杭頭部の構造。 The structure of a foundation pile head according to claim 1 or 2, wherein the hollow portion is filled with a solidifying material.
JP2000311073A 2000-10-11 2000-10-11 Foundation pile head structure Expired - Lifetime JP4110729B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000311073A JP4110729B2 (en) 2000-10-11 2000-10-11 Foundation pile head structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000311073A JP4110729B2 (en) 2000-10-11 2000-10-11 Foundation pile head structure

Publications (2)

Publication Number Publication Date
JP2002115248A JP2002115248A (en) 2002-04-19
JP4110729B2 true JP4110729B2 (en) 2008-07-02

Family

ID=18790901

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000311073A Expired - Lifetime JP4110729B2 (en) 2000-10-11 2000-10-11 Foundation pile head structure

Country Status (1)

Country Link
JP (1) JP4110729B2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4574080B2 (en) * 2001-08-03 2010-11-04 岡部株式会社 Welding brackets for couplers for reinforcing bars for steel pipe piles
JP5420376B2 (en) * 2009-11-20 2014-02-19 岡部株式会社 Pile head joint structure
JP5420377B2 (en) * 2009-11-20 2014-02-19 岡部株式会社 Pile head joint structure
JP6349056B2 (en) * 2013-03-28 2018-06-27 センクシア株式会社 Pile head joint structure
JP6381070B2 (en) * 2013-07-09 2018-08-29 センクシア株式会社 Pile head joint structure
JP6335100B2 (en) * 2014-11-07 2018-05-30 岡部株式会社 Pile head joint structure of steel pipe concrete pile
JP6503496B2 (en) * 2018-05-14 2019-04-17 センクシア株式会社 Pile head connection structure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6433313A (en) * 1987-07-28 1989-02-03 Nippon Steel Corp Connection of steel tubular pile
JP3071691B2 (en) * 1996-06-07 2000-07-31 株式会社フジックス Turnbuckle connection device
JP3803730B2 (en) * 1997-03-07 2006-08-02 株式会社トーテック Steel pipe pile rebar connector
JP4048552B2 (en) * 1998-03-04 2008-02-20 東京鐵鋼株式会社 Construction method of pile head anchor bars for steel pipe piles

Also Published As

Publication number Publication date
JP2002115248A (en) 2002-04-19

Similar Documents

Publication Publication Date Title
JP4992042B2 (en) Precast horizontal beam and pier using it
JP2001342611A (en) Bridge girder
JP4110729B2 (en) Foundation pile head structure
JP2000170285A (en) Connecting method for steel sheet concrete structural wall and junction structure
JPH10252148A (en) Beam-column joint construction
JP2005200994A (en) Joining structure of closed cross-sectional member
JPH11269871A (en) Composite pile for foundation pile
JP2004285823A (en) Floor slab bridge and floor slab unit
JP4239394B2 (en) Foundation pile head structure
JP4154099B2 (en) Joint structure of steel pipe member and concrete member
JP3290636B2 (en) Joint structure between steel column base and foundation concrete
JP2000027197A (en) Structure of connecting part for steel pipe pile and footing
JP3399917B2 (en) Joint structure of steel pipe column and beam
JP4085023B2 (en) Connection structure of steel column or steel pipe column and beam reinforcement
JP2004270416A (en) Pile with large-diameter bearing plate, and structure for joining pile head thereof
JP2004316073A (en) Joint structure of column and beam with floor slab composite function
JP2886376B2 (en) Anchor structure of pile head
JP2003056060A (en) Frame structure of building
JP2627707B2 (en) Joint structure between underground continuous wall and underground skeleton
JP2004183220A (en) Pile head joint structure, pile head joint hard ware and its construction method
JP2001262707A (en) Junction structure for reinforced concrete column and steel beam
JP2003055916A (en) Form for concrete floor slab of corrugated steel plate
JP2023149166A (en) Reinforcement connection part structure for existing frame member
JP2023149167A (en) Reinforcement connection part structure for existing frame member
JPH062371A (en) Connecting method for structural steel and reinforcing bar

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060601

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20071210

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080122

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080222

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20080318

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20080331

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110418

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120418

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120418

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130418

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130418

Year of fee payment: 5

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

R371 Transfer withdrawn

Free format text: JAPANESE INTERMEDIATE CODE: R371

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130418

Year of fee payment: 5

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130418

Year of fee payment: 5

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140418

Year of fee payment: 6

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350