JP5323548B2 - Anchor pedestal - Google Patents

Anchor pedestal Download PDF

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JP5323548B2
JP5323548B2 JP2009074123A JP2009074123A JP5323548B2 JP 5323548 B2 JP5323548 B2 JP 5323548B2 JP 2009074123 A JP2009074123 A JP 2009074123A JP 2009074123 A JP2009074123 A JP 2009074123A JP 5323548 B2 JP5323548 B2 JP 5323548B2
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anchor
locking
erection
receiving
retaining wall
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JP2010222934A (en
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建夫 新宅
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Taisei Corp
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Description

本発明は、アースアンカー工法におけるアンカー台座に関する。   The present invention relates to an anchor base in an earth anchor method.

山留工においては、地山に配設されたアンカーにより山留壁のはらみ出しや倒れを抑制する。
このようなアンカー104は、図6に示すように、山留壁102の開口部側(掘削部側)表面に配設された上下の腹起し103,103に跨って配設されたアンカー台座101に頭部140を係止させている。これにより、アンカー104の緊張力が、腹起し103,103を介して山留壁102に伝達されている。
In the mountain construction, the anchors placed on the natural ground are used to suppress the protruding and falling of the mountain retaining wall.
As shown in FIG. 6, such an anchor 104 is an anchor pedestal that is disposed across the upper and lower abdominal protrusions 103, 103 disposed on the opening side (excavation side) surface of the mountain retaining wall 102. 101, the head 140 is locked. As a result, the tension of the anchor 104 is transmitted to the mountain retaining wall 102 via the erections 103 and 103.

従来のアンカー台座101は、側面視で略三角形を呈し、腹起し103から掘削部側に突出した状態で配設されている(例えば特許文献1参照)。   The conventional anchor pedestal 101 has a substantially triangular shape in a side view, and is disposed in a state of protruding from the abdomen 103 to the excavation part side (see, for example, Patent Document 1).

特開2008−267099号公報JP 2008-267099 A

ところが、従来の山留工事においては、アンカー台座101が掘削部側に突出しているため、構築が予定されている構造物の側面から、アンカー台座101および腹起し103,103の突出長を確保した位置に山留壁102を形成する必要があった。
そのため、掘削土量が多く、作業の手間や残土処分等が工事費用削減の妨げとなっていた。また、山留工の延長も長くなることで、その材料費に費用が嵩むという問題を有していた。
However, since the anchor base 101 protrudes toward the excavation part in the conventional mountain retaining work, the protrusion length of the anchor base 101 and the erection 103, 103 is secured from the side of the structure to be constructed. It was necessary to form the mountain retaining wall 102 at the position.
For this reason, the amount of excavated soil is large, and labor and disposal of remaining soil have hindered construction cost reduction. In addition, the lengthening of the mountain retaining works has a problem that the material cost is increased.

本発明は、前記の問題点を解決することを目的とするものであり、山留工事の施工費の低減化および工期短縮を可能としたアンカー台座を提案することを課題とする。   An object of the present invention is to solve the above-described problems, and an object of the present invention is to propose an anchor pedestal capable of reducing the construction cost and shortening the construction period of mountain retaining works.

前記課題を解決するために、第一発明のアンカー台座は、山留壁の表面に配設された上下の腹起しに架設される一対の架設部と、アンカーの頭部が取り付けられる受け部と、を備えるアンカー台座であって、前記架設部は、コ字状またはく字状に形成されて前記上下の腹起しの間に配置される連結部と、前記腹起しに表面に係止される係止部と、を備えており、前記受け部は、前記一対の架設部の連結部同士に跨って配設され、前記係止部よりも山留壁側に配置されていて、前記連結部は、前記山留壁と前記上下の腹起しとにより形成された空間内に収まっていることを特徴としている。 In order to solve the above-described problems, an anchor base according to a first aspect of the present invention includes a pair of erected parts that are installed on the upper and lower erections disposed on the surface of the mountain retaining wall, and a receiving part to which the anchor head is attached An anchor pedestal, wherein the erection portion is formed in a U-shape or a U-shape and is disposed between the upper and lower erections, and the surface of the erection erection An engaging portion to be stopped, and the receiving portion is disposed across the connecting portions of the pair of erection portions, and is disposed closer to the mountain retaining wall than the engaging portion , the connecting portion is characterized that you have settled on the mountain Tomekabe and the upper and lower wale and the space formed by the.

また、第二発明のアンカー台座は、山留壁に配設された腹起しに係止される係止部と、アンカーの頭部が取り付けられる受け部と、前記受け部に作用する支圧力を前記係止部に伝える連結部と、を備えるアンカー台座であって、前記連結部は、鋼棒または鋼線により構成されていて、一方の端部が前記受け部に、他方の端部が前記係止部に、それぞれナットを介して固定されており、前記受け部が、前記係止部よりも山留壁側に配置されることを特徴としている。 The anchor pedestal according to the second aspect of the present invention includes a locking portion that is locked to the flank disposed on the mountain retaining wall, a receiving portion to which the anchor head is attached, and a support pressure that acts on the receiving portion. An anchor pedestal comprising: a connecting portion that conveys to the locking portion, wherein the connecting portion is made of a steel rod or a steel wire, one end being the receiving portion and the other end being It is fixed to the said latching | locking part through a nut, respectively, The said receiving part is arrange | positioned rather than the said latching | locking part at the mountain retaining wall side, It is characterized by the above-mentioned.

かかるアンカー台座は、アンカーの頭部が取り付けられる受け板が、係止部よりも山留壁側(地山側)に配設されているため、山留工における掘削部側(開口部側)への突出部分を削減することができる。つまり、アンカーの頭部(受け板)が腹起しの表面よりも地山側に配置されているため、山留壁と計画された構造物との離隔距離を近づけることが可能となり、その結果、掘削土量の削減、山留工の延長の削減が可能となる。   In such an anchor pedestal, the receiving plate to which the head of the anchor is attached is arranged on the mountain retaining wall side (the ground mountain side) than the locking portion, so that the excavation part side (opening side) in the mountain anchoring work The protruding portion of the can be reduced. In other words, the anchor head (back plate) is located closer to the ground than the surface of the flank, so it is possible to reduce the separation distance between the retaining wall and the planned structure. It is possible to reduce the amount of excavated soil and extend the length of mountain retaining works.

また、アンカー台座を一対の架設部材と受け板とを組み合わせることにより構成すれば、現地において簡易に形成することが可能となる。   Moreover, if the anchor base is configured by combining a pair of erection members and a receiving plate, it can be easily formed on site.

本発明のアンカー台座によれば、山留工事の費用の低減化および工期短縮が可能となる。   According to the anchor pedestal of the present invention, it is possible to reduce the cost of construction work and shorten the construction period.

第1の実施の形態に係るアンカー台座を示す側面図である。It is a side view which shows the anchor base which concerns on 1st Embodiment. 同アンカー台座の分解斜視図である。It is a disassembled perspective view of the anchor base. 同アンカー台座の設置状況を示す側面図である。It is a side view which shows the installation condition of the anchor base. 同アンカー台座を利用した立坑の断面図と従来のアンカー台座を利用した立坑の断面図である。It is sectional drawing of the shaft using the anchor pedestal, and sectional drawing of the shaft using the conventional anchor pedestal. 第2の実施の形態に係るアンカー台座を示す側面図である。It is a side view which shows the anchor base which concerns on 2nd Embodiment. アンカー台座の変形例を示す斜視図である。It is a perspective view which shows the modification of an anchor base. 従来のアンカー台座を示す側面図である。It is a side view which shows the conventional anchor base.

本発明の好適な実施形態について、図面を参照して詳細に説明する。
本実施形態のアンカー台座1は、図1に示すように、山留壁2の表面に配設された上下の腹起し3,3に架設される一対の架設部10(図1では1方のみ表示)と、アンカー4の頭部40が取り付けられる受け部11とを備えている。
Preferred embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the anchor pedestal 1 according to this embodiment includes a pair of erection parts 10 (one side in FIG. Only) and a receiving part 11 to which the head 40 of the anchor 4 is attached.

架設部10は、上下の腹起し3,3の間に配置される連結部12と、連結部12の両端に一体に形成された係止部13,13とを備えて構成されている。
架設部10の形成方法は限定されるものではなく、例えば、鋼板に曲げ加工を施す方法や鋳物により形成する方法など、適宜行えばよい。
The erection part 10 is configured to include a connecting part 12 disposed between the upper and lower protuberances 3 and 3, and locking parts 13 and 13 integrally formed at both ends of the connecting part 12.
The formation method of the installation part 10 is not limited, For example, what is necessary is just to perform suitably, such as the method of bending a steel plate, the method of forming by casting.

連結部12は、図1に示すように、断面コ字状に形成されている。連結部12は、受け部11を係止するための凹部を形成し、腹起し3,3の間に収まっている。これにより、アンカー4の頭部40が、腹起し3の表面からの突出することを無くすあるいは低減させることが可能となる。   As shown in FIG. 1, the connecting portion 12 is formed in a U-shaped cross section. The connecting portion 12 forms a recess for locking the receiving portion 11 and is raised between the three and three. As a result, the head 40 of the anchor 4 can be eliminated or reduced from protruding from the surface of the upset 3.

係止部13は、連結部12の先端から上方または下方に延設されて腹起し3,3に表面に係止されている。
係止部13の形状は、腹起し3への係止が可能で、アンカー4の緊張力を腹起し3に伝達することが可能であれば限定されるものではない。
The locking portion 13 extends upward or downward from the tip of the connecting portion 12 and rises up and is locked to the surface at 3 and 3.
The shape of the locking portion 13 is not limited as long as it can be locked to the erection 3 and can transmit the tension of the anchor 4 to the erection 3.

受け部11は、矩形状の鋼板であって、一対の架設部10,10の連結部12,12に跨って配設されている。図2に示すように、受け部11の中央には、アンカー4を挿通するための挿通孔11aが形成されている。受け部11は、図1に示すように、腹起し3,3の間において、係止部13,13よりも山留壁2側に配置される。なお、受け部11の形状や材質は限定されるものではない。   The receiving part 11 is a rectangular steel plate and is disposed across the connecting parts 12 and 12 of the pair of erection parts 10 and 10. As shown in FIG. 2, an insertion hole 11 a for inserting the anchor 4 is formed in the center of the receiving portion 11. As shown in FIG. 1, the receiving portion 11 is arranged between the raised portions 3 and 3 and closer to the mountain retaining wall 2 than the locking portions 13 and 13. In addition, the shape and material of the receiving part 11 are not limited.

本実施形態では、連結部12,12の底部分に受け部11を配置した状態で、溶接することで、架設部10,10と受け部11とを連結している。なお、架設部10と受け部11との連結方法は限定されるものではない。   In this embodiment, the installation parts 10 and 10 and the receiving part 11 are connected by welding in the state which has arrange | positioned the receiving part 11 in the bottom part of the connecting parts 12 and 12. FIG. In addition, the connection method of the construction part 10 and the receiving part 11 is not limited.

アンカー4は、アンカー台座1の受け部11の挿通孔11aを挿通した状態で、頭部40が受け部11に係止されている。
アンカー4の頭部40は、コ字状の連結部12により形成された凹部内に収まっているため、係止部13の表面から突出しないように構成されている。なお、アンカー4は、必ずしも頭部40全体が連結部12により形成された凹部内に収まっている必要はない。
In the anchor 4, the head 40 is locked to the receiving portion 11 in a state where the anchor 4 is inserted through the insertion hole 11 a of the receiving portion 11 of the anchor base 1.
The head 40 of the anchor 4 is configured not to protrude from the surface of the locking portion 13 because it is accommodated in the recess formed by the U-shaped connecting portion 12. In addition, the anchor 4 does not necessarily need to fit in the recessed part formed of the connection part 12 by the whole head 40. FIG.

アンカー台座1は、図3に示すように、受け部11が係止部13よりも山留壁2側に配置されるため、山留壁2の表面からの突出幅(突出長)Hを、従来のアンカー台座101の突出幅H’よりも小さくすることができる。   As shown in FIG. 3, the anchor pedestal 1 has a protruding portion (projecting length) H from the surface of the mountain retaining wall 2 because the receiving portion 11 is disposed on the mountain retaining wall 2 side than the locking portion 13. The protrusion width H ′ of the conventional anchor base 101 can be made smaller.

そのため、図4に示すように、立坑Pの構築等において、山留壁2を、構築が予定された構造物Bに近づけることが可能となる。山留壁2と構造物Bとの離隔距離Lを短くできれば、立坑Pの大きさを削減することができ、ひいては掘削土量の削減を実現することができる。
したがって、工期および工事費を大幅に削減できるとともに、発生土の廃棄処分による環境への負担も大幅に削減することが可能となる。
Therefore, as shown in FIG. 4, in the construction of the shaft P or the like, the mountain retaining wall 2 can be brought close to the structure B scheduled to be constructed. If the separation distance L between the mountain retaining wall 2 and the structure B can be shortened, the size of the shaft P can be reduced, and consequently the amount of excavated soil can be reduced.
Therefore, the construction period and construction cost can be greatly reduced, and the burden on the environment due to the disposal of the generated soil can be greatly reduced.

また、アンカー4の頭部40が腹起し3の表面から突出していないため、腹起し3に沿って作業足場を設置した場合であっても、作業足場上の歩行の妨げとなることがなく、作業時の安全性が確保されている。   In addition, since the head 40 of the anchor 4 rises and does not protrude from the surface of the 3, even when the work scaffold is installed along the bump 3, it may hinder walking on the work scaffold. The safety during work is ensured.

また、アンカー4の緊張力は、係止部13,13を介して腹起し3,3に伝達されるため、山留壁2のはらみ出し等を効果的に抑えることができる。   Further, since the tension force of the anchor 4 rises through the locking portions 13 and 13 and is transmitted to the third and third portions, the protrusion of the mountain retaining wall 2 can be effectively suppressed.

第2の実施の形態に係るアンカー台座1’は、図5に示すように、アンカー4の頭部40が取り付けられる受け部11と、山留壁2の表面に配設された腹起し3,3に係止される係止部13と、受け部11と係止部13とを連結する連結部12とを備えて構成されている。   As shown in FIG. 5, the anchor pedestal 1 ′ according to the second embodiment includes a receiving portion 11 to which the head 40 of the anchor 4 is attached, and an abdominal protrusion 3 disposed on the surface of the mountain retaining wall 2. , 3, and a connecting portion 12 that connects the receiving portion 11 and the locking portion 13.

受け部11は、中央にアンカー4を挿通するための挿通孔11aが形成された矩形状の鋼板(図2参照)であって、連結部12を介して係止部13に連結されている。受け部11は、図5に示すように、係止部13,13よりも山留壁2側に配置される。
本実施形態の受け部11には、角部分に連結部12を挿通するための貫通孔(図示省略)が形成されている。
The receiving portion 11 is a rectangular steel plate (see FIG. 2) in which an insertion hole 11 a for inserting the anchor 4 is formed at the center, and is connected to the locking portion 13 via the connecting portion 12. The receiving part 11 is arrange | positioned rather than the latching | locking parts 13 and 13 at the mountain retaining wall 2 side, as shown in FIG.
In the receiving portion 11 of the present embodiment, a through hole (not shown) for inserting the connecting portion 12 is formed at the corner portion.

連結部12は、受け部11と係止部13とを連結する部材であって、本実施形態では、鋼棒により構成する。
連結部12は、一方の端部が受け部11に、他方の端部が係止部13に、それぞれナットを介して固定されている。
なお、連結部12を構成する材料は、例えば鋼線でもよく、限定されるものではない。また、連結部12の固定方法も限定されるものではない。
The connection part 12 is a member which connects the receiving part 11 and the latching | locking part 13, Comprising: In this embodiment, it is comprised with the steel rod.
One end of the connecting portion 12 is fixed to the receiving portion 11 and the other end is fixed to the locking portion 13 via nuts.
In addition, the material which comprises the connection part 12 may be a steel wire, for example, and is not limited. Moreover, the fixing method of the connection part 12 is not limited, either.

係止部13は、腹起し3の表面に係止された部材であって、本実施形態では鋼板により構成する。
係止部13は、腹起し3の表面に溶接により固定されている。なお、係止部13の腹起し3への固定方法は限定されるものではない。
The latching | locking part 13 is a member latched by the surface of the flank 3, and is comprised with the steel plate in this embodiment.
The locking portion 13 is fixed to the surface of the erection 3 by welding. In addition, the fixing method to the raising part 3 of the latching | locking part 13 is not limited.

以上、第2の実施の形態に係るアンカー台座1’によれば、アンカー台座1’の軽量化を図ることが可能となり、取り扱い性に優れている。   As described above, according to the anchor pedestal 1 ′ according to the second embodiment, it is possible to reduce the weight of the anchor pedestal 1 ′, and the handleability is excellent.

また、受け部11の角度を現地にて調節することができるため、何らかの原因でアンカー4の角度を設計通りにすることができない場合であっても、対応することができる。   Moreover, since the angle of the receiving part 11 can be adjusted locally, even if the angle of the anchor 4 cannot be made as designed for some reason, it is possible to cope with it.

この他の第2の実施の形態のアンカー台座1’の効果は、第1の実施の形態に係るアンカー台座1と同様なため、詳細な説明は省略する。   Since the effect of the anchor pedestal 1 ′ of the other second embodiment is the same as that of the anchor pedestal 1 according to the first embodiment, detailed description thereof is omitted.

以上、本発明について、好適な実施形態について説明した。しかし、本発明は、前述の各実施形態に限られず、前記の各構成要素については、本発明の趣旨を逸脱しない範囲で、適宜変更が可能であることはいうまでもない。   The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and it goes without saying that the above-described constituent elements can be appropriately changed without departing from the spirit of the present invention.

例えば、前記実施形態では、連結部12を断面コ字状に形成した場合について説明したが、連結部12を断面く状に形成するなど、アンカー4の角度に対応して形成されていれば連結部12の形状は限定されるものではい。   For example, in the above-described embodiment, the case where the connecting portion 12 is formed in a U-shaped cross section has been described. The shape of the part 12 is not limited.

また、前記実施形態では、複数の部材を組み合わせることによりアンカー台座1(1’)を構成するものとしたが、図6に示すように、受け部11と連結部12と係止部13とが予め一体に形成されたアンカー台座1”を使用してもよい。
なお、アンカー台座1”の製造方法は限定されるものではなく、例えば鋼板に曲げ加工を施す方法や、鋳物により製造する方法を採用してもよい。
Moreover, in the said embodiment, although the anchor base 1 (1 ') was comprised by combining a some member, as shown in FIG. 6, the receiving part 11, the connection part 12, and the latching | locking part 13 are included. An anchor pedestal 1 ″ that is integrally formed in advance may be used.
The manufacturing method of the anchor pedestal 1 ″ is not limited. For example, a method of bending a steel plate or a method of manufacturing by casting may be adopted.

また、アンカー4の構造は限定されるものではない。
また、腹起し3として使用する鋼材はH型鋼に限定されるものではない。
Moreover, the structure of the anchor 4 is not limited.
Further, the steel material used as the erection 3 is not limited to the H-shaped steel.

1,1’,1” アンカー台座
10 架設部
11 受け部
12 連結部
13 係止部
2 山留壁
3 腹起し
4 アンカー
1, 1 ', 1 "Anchor base 10 Construction part 11 Receiving part 12 Connecting part 13 Locking part 2 Yamato wall 3 Raising 4 Anchor

Claims (2)

山留壁の表面に配設された上下の腹起しに架設される一対の架設部と、
アンカーの頭部が取り付けられる受け部と、を備えるアンカー台座であって、
前記架設部は、コ字状またはく字状に形成されて前記上下の腹起しの間に配置される連結部と、前記腹起しに表面に係止される係止部と、を備えており、
前記受け部は、前記一対の架設部の連結部同士に跨って配設され、前記係止部よりも山留壁側に配置されていて、
前記連結部は、前記山留壁と前記上下の腹起しとにより形成された空間内に収まっていることを特徴とする、アンカー台座。
A pair of erection parts that are erected on the upper and lower erections disposed on the surface of the mountain retaining wall;
An anchor pedestal comprising a receiving portion to which the head of the anchor is attached,
The erection portion includes a connecting portion that is formed in a U shape or a U shape and is disposed between the upper and lower erections, and a locking portion that is locked to the surface of the erection. And
The receiving portion is disposed across the connecting portions of the pair of erection portions, and is disposed closer to the mountain retaining wall than the locking portion ,
The connecting unit is characterized that you have settled on the mountain Tomekabe and the upper and lower wale and the space formed by the anchor base.
山留壁に配設された腹起しに係止される係止部と、
アンカーの頭部が取り付けられる受け部と、
前記受け部に作用する支圧力を前記係止部に伝える連結部と、を備えるアンカー台座であって、
前記連結部は、鋼棒または鋼線により構成されていて、一方の端部が前記受け部に、他方の端部が前記係止部に、それぞれナットを介して固定されており、
前記受け部が、前記係止部よりも山留壁側に配置されることを特徴とする、アンカー台座。
A locking part that is locked to the abdomen arranged on the mountain retaining wall;
A receiving part to which the head of the anchor is attached;
An anchor pedestal comprising: a connecting portion that transmits a supporting pressure acting on the receiving portion to the locking portion;
The connecting portion is composed of a steel bar or a steel wire, one end is fixed to the receiving portion, the other end is fixed to the locking portion via nuts, respectively.
The anchor pedestal characterized in that the receiving part is arranged closer to the mountain wall than the locking part.
JP2009074123A 2009-03-25 2009-03-25 Anchor pedestal Expired - Fee Related JP5323548B2 (en)

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JP7453864B2 (en) 2020-06-25 2024-03-21 清水建設株式会社 Temporary ground anchor frame and earth retaining structure

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