JP4581536B2 - Retaining wall structure - Google Patents

Retaining wall structure Download PDF

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JP4581536B2
JP4581536B2 JP2004220122A JP2004220122A JP4581536B2 JP 4581536 B2 JP4581536 B2 JP 4581536B2 JP 2004220122 A JP2004220122 A JP 2004220122A JP 2004220122 A JP2004220122 A JP 2004220122A JP 4581536 B2 JP4581536 B2 JP 4581536B2
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retaining wall
bracket
wall
mountain
bulge
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JP2006037552A (en
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耕一 田中
聡 米倉
利男 坂梨
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Kajima Corp
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Description

本願発明は山留め壁の構造に関し、特に腹起しを設置するためのブラケットの取付けおよび撤去を簡単に行うことにより、山留め工の仮設および撤去をきわめて効率的に行えるようにしたものである。 The present invention relates to a structure of a mountain retaining wall, and in particular, it is possible to perform temporary installation and removal of a mountain retaining work very efficiently by simply attaching and removing a bracket for installing an abdominal erection.

地下構造物を構築するために地盤を広範囲にわたって掘削する際、例えば図５に図示するように、山留め壁２０、腹起し２１、タイバックアンカー２２などの山留め支保工を設けて周囲の地盤が崩壊しないようにする必要がある。   When excavating the ground extensively to construct an underground structure, as shown in FIG. 5, for example, as shown in FIG. It is necessary not to collapse.

ここで特に腹起し２１は、図示するように山留め壁２０の壁面に所定間隔おきに突設された複数のブラケット２３の上に架け渡することにより山留め壁２０の壁面に沿って設置され、またブラケット２３には主にタイバックアンカー２２の反力による鉛直荷重と時計回りの曲げモーメントが作用する。   Here, in particular, the erection 21 is installed along the wall surface of the retaining wall 20 by laying on a plurality of brackets 23 projecting at predetermined intervals on the wall surface of the retaining wall 20 as shown in the figure. Further, a vertical load and a clockwise bending moment are mainly applied to the bracket 23 due to the reaction force of the tieback anchor 22.

ところで、従来、この種のブラケット２３は、山留め壁２０の壁面に一つ一つ現場溶接することにより取り付ける一方、山留め工の撤去に際しては切断する等して除去していた。
特開平２０００−１６０５５９号公報 特開平２００１−１３１９７７号公報 特開平２００３−２３９２８８号公報 特開平２００３−２６８７７０号公報 By the way, conventionally, this type of bracket 23 is attached to the wall surface of the retaining wall 20 by on-site welding one by one, while being removed when the retaining member is removed.
Japanese Unexamined Patent Publication No. 2000-160559 Japanese Patent Laid-Open No. 2001-131977 JP-A-2003-239288 JP-A-2003-268770

しかし、現場溶接は、特に天候に大きく左右されやすく、またこの種のブラケットは相当な数になるため時間(日数)も相当かかり、さらに使用後のブラケットは山留め壁の壁面から手荒に切断して除去され、その多くはそのまま廃材として処理されているため、非常に不経済であった。   However, field welding is particularly sensitive to the weather, and since this type of bracket is quite a number, it takes a lot of time (days) and the bracket after use is roughly cut from the wall surface of the retaining wall. Since many of them were removed and treated as waste, they were very uneconomical.

本願発明は、以上の課題を解決するためになされたもので、特に腹起しを設置するためのブラケットの取付けおよび撤去を簡単に行うことにより、山留め工の仮設および撤去をきわめて効率的に行えるようにした山留め壁の構造を提供することを目的とする。 The present invention has been made to solve the above-described problems, and in particular, by temporarily attaching and removing the bracket for installing the abdomen, temporary installation and removal of the anchorage can be performed very efficiently. An object of the present invention is to provide a structure of a mountain retaining wall .

請求項１記載の山留め壁の構造は、山留め壁と、当該山留め壁の壁面にその横方向に所定間隔をおいて突設された複数のブラケットと、当該ブラケット間に水平に架け渡された下部腹起しと、当該下部腹起しの上側に水平に架け渡された上部腹起しと、当該上部腹起しと前記下部腹起し間に横方向に所定間隔をおいて架け渡された複数の定着金具と、前記山留め壁の上下腹起し間を貫通して地山に施工された複数のアンカーと、前記上部腹起しと下部腹起しにそれぞれ一端が接合された上段側切り梁および下段側切り梁とを備えて構成され、前記ブラケットは、下部腹起しが載置されたアーム部と、当該アーム部の基端側から山留め壁の壁面に沿って上方に延び、前記上下腹起しがそれぞれ添え付けられていると共に、前記上下腹起しを介して前記上段側切り梁および下段側切り梁の軸力によって山留め壁に押し付けられている延出部とから構成され、かつ前記ブラケットは前記山止め壁に設けられた突起に脱着自在に係止され、前記定着金具に前記アンカーの基端側が定着されてなることを特徴とするものである。 The structure of the mountain retaining wall according to claim 1 includes a mountain retaining wall, a plurality of brackets projecting from the wall surface of the mountain retaining wall at a predetermined interval in the lateral direction, and a lower portion horizontally spanned between the brackets. An abdomen, an upper abdomen horizontally spanned above the lower abdomen, and a transverse interval between the upper abdomen and the lower abdomen A plurality of fixing brackets, a plurality of anchors that are installed in the ground through the upper and lower flank of the retaining wall, and an upper side cut that has one end joined to the upper flank and the lower flank A bracket and a lower-stage cut beam, and the bracket extends upward along the wall surface of the retaining wall from the arm portion on which the lower bulge is placed and the base end side of the arm portion, with vertical wale is attached served respectively, through the upper abdomen raised Wherein the axial force of the upper-stage cutting beam and the lower side cutting beam is composed of a extending portion is pressed against the earth retaining wall and the bracket is locked detachably with the projection provided on the Yamadome wall, A base end side of the anchor is fixed to the fixing metal fitting.

本願発明は、山留め壁の壁面に腹起しを設置するためのブラケットを、山留め壁の壁面に脱着自在に取り付けるようにしたことで、これまで必要とされたブラケットの現場溶接による取付けおよび切断による除去をなくして山留め工の効率的仮設および撤去を可能にするとともに、ブラケットの反覆利用によりコスト削減を可能にしたものである。   In the present invention, the bracket for installing the belly erection on the wall surface of the retaining wall is detachably attached to the wall surface of the retaining wall. This eliminates the need for removal and enables efficient temporary construction and removal of the mountain fixing work, and enables cost reduction by repetitive use of the bracket.

この場合の山留め壁は、例えばＳＭＷ工法、親杭横矢板工法、鋼矢板工法などの山留め工法によって構築することができ、またＳＭＷ工法による山留め壁の場合、突起は芯杭として設置されたＨ形鋼などの形鋼に形成すればよく、また親杭横矢板工法による場合、突起は親杭に形成すればよく、さらに鋼矢板工法による場合は鋼矢板に形成すればよい。   The mountain retaining wall in this case can be constructed by a mountain retaining method such as the SMW method, the parent pile sheet pile method, or the steel sheet pile method, and in the case of a mountain retaining wall by the SMW method, the protrusion is an H-shaped installed as a core pile. What is necessary is just to form in shape steels, such as steel, and what is necessary is just to form a protrusion in a parent pile in the case of a main pile horizontal sheet pile method, and also in a steel sheet pile in the case of a steel sheet pile method.

また、延出部を山留め壁の壁面に強く押し付けてブラケットを山留め壁の壁面に固定する固定部材としては、アーム部に載置される腹起し、当該腹起しの上段側に設置される腹起し、これら腹起し間に架け渡される切り梁、さらにこれら上下の腹起し間に施工されるアンカー等を利用することができる。また、この場合のアンカーには例えばホールインアンカーやタイバックアンカー等を利用することができる。   Further, as a fixing member that firmly presses the extending portion against the wall surface of the retaining wall and fixes the bracket to the wall surface of the retaining wall, the abdominal erection placed on the arm portion is installed on the upper side of the erection It is possible to use an uprising, a cut beam spanned between the uprising, an anchor constructed between the upper and lower uprising, and the like. Further, for example, a hole-in anchor or a tie-back anchor can be used as the anchor in this case.

請求項２記載の山留め壁の構造は、請求項１記載の山留め壁の構造において、前記突起には前記ブラケットの掛止部を前記山留め壁の壁面との間で挟み込むようにフック部が設けられてなることを特徴とするものである。 The structure of the mountain retaining wall according to claim 2 is the structure of the mountain retaining wall according to claim 1, wherein the protrusion is provided with a hook portion so that the hooking portion of the bracket is sandwiched between the wall surface of the mountain retaining wall. It is characterized by.

このようなフック部を設けることにより、ブラケットに作用する水平力の一部をこのフック部に負担させることで、上方に延びる延出部の長さを極力短くすることができ、これによりブラケットを可能な限り小型に形成することができる等の効果がある。   By providing such a hook portion, the length of the extending portion extending upward can be shortened as much as possible by causing the hook portion to bear a part of the horizontal force acting on the bracket. There is an effect that it can be formed as small as possible.

請求項３記載の山留め壁の構造は、請求項１または２記載の山留め壁の構造において、突起にブラケットの高さ調整用の鋼材片が必要数重ねて取り付けられてなることを特徴とするものである。 Structure of Retaining wall according to claim 3, in the structure according to claim 1 or 2, wherein the earth retaining wall, which steel pieces for height adjustment of the bracket projection is characterized by comprising attached overlapping necessary number It is.

本願発明は、アーム部の上方に延びる延出部を前記アーム部に載置される腹起しより上方に設置された腹起し、切り梁、タイバックアンカー等の固定部材によって固定することによりブラケットをより強固に固定することができる。
請求項４記載の山留め壁の構造は、請求項１〜３のいづれかひとつに記載の山留め壁の構造において、前記突起は山留め壁内に所定間隔をおいて建て込まれた芯杭に突設されてなることを特徴とするものである。 In the present invention, by extending the extending portion extending above the arm portion from the bellows placed on the arm portion, and fixing it by a fixing member such as a cut beam or a tie-back anchor. The bracket can be fixed more firmly.
Structure of Retaining wall according to claim 4, wherein, in the structure of the earth retaining wall according to one either of the preceding claims, wherein the projection protruding from the core piles which Tatekoma at predetermined intervals earth retaining wall It is characterized by.

本願発明は、山留め壁の壁面に腹起しを設置するためのブラケットを、山留め壁の壁面に脱着自在に取り付けるようにしたことで、これまで必要とされたブラケットの現場溶接を一切なく、このため山留め工の仮設および撤去をきわめて効率的に行うことができ、またブラケットの反覆利用が可能なことによりコスト削減も図ることができる。   The present invention is such that the bracket for installing the erection on the wall surface of the retaining wall is detachably attached to the wall surface of the retaining wall, so that there is no on-site welding of the bracket required so far. Therefore, the temporary construction and removal of the mountain fixing work can be performed very efficiently, and the cost can be reduced because the bracket can be used for repetitive use.

図１〜図４は、本願発明の一例を示し、図において、山留め壁１の壁面に複数のブラケット２が横方向に所定間隔おきに突設され、このブラケット２，２間に下部腹起し３が水平に架け渡されている。 1 to 4 show an example of the present invention. In the figure, a plurality of brackets 2 project from a wall surface of a retaining wall 1 at predetermined intervals in the lateral direction, and a lower belly is raised between the brackets 2 and 2. 3 is stretched horizontally.

また、下部腹起し３の上側に溝形鋼などの形鋼からなる複数のブラケット４がブラケット２とは別に横方向に所定間隔おきに突設され、このブラケット４，４間に上部腹起し５が水平に架け渡されている。 Further, the plurality of brackets 4 bracket 2 made of shape steel such as the interposition steel above the lower wale 3 is projected at predetermined intervals apart in the transverse direction, the upper between the bracket 4,4 HaraOkoshi 5 is stretched horizontally.

さらに、下部腹起し３と上部腹起し５との間から背面の地山６に、複数のタイバックアンカー７が山留め壁１を貫通して施工され、各タイバックアンカー７の基端側７ａは下部腹起し３と上部腹起し５との間に架け渡された定着金具８に定着ナット９によってそれぞれ定着されている。こうして山留め壁１と下部腹起し３および上部腹起し５と複数のタイバックアンカー７とからなる山留め工によって地山６が崩落しないように支持されている。 Further, a plurality of tieback anchors 7 are constructed through the mountain retaining wall 1 between the lower erection 3 and the upper erection 5 on the back ground 6, and the base end side of each tieback anchor 7. 7 a is fixed to a fixing bracket 8 spanned between the lower bulge 3 and the upper bulge 5 by a fixing nut 9. In this way, the natural ground 6 is supported so as not to collapse by the mountain retaining work composed of the mountain retaining wall 1, the lower erection 3, the upper erection 5, and the plurality of tieback anchors 7.

山留め壁１は、原位置土を主材料としたソイルセメント壁を地中に連続して形成する「ＳＭＷ工法」によって構築され、壁内には特にＨ形鋼からなる芯杭１０が所定間隔おきに建て込まれ、各芯杭１０の壁面側のフランジ１０ａの表面にはブラケット２を掛止するための突起１１が突設されている。   The retaining wall 1 is constructed by the “SMW method” in which a soil cement wall made mainly of in-situ soil is continuously formed in the ground, and core piles 10 made of H-shaped steel in particular are provided at predetermined intervals in the wall. The protrusion 11 for hooking the bracket 2 protrudes from the surface of the flange 10a on the wall surface side of each core pile 10.

ブラケット２は、側面視ほぼ三角形状(トラス状)に形成されたアーム部１２とアーム部１２の上端部に芯杭１０のフランジ１０ａの表面に沿って上方に垂直に延びる平板状の延出部１３とから形成されている。   The bracket 2 includes an arm portion 12 formed in a substantially triangular shape (truss shape) in a side view and a flat plate-like extending portion extending vertically upward along the surface of the flange 10a of the core pile 10 at the upper end portion of the arm portion 12. 13.

アーム部１２は、山留め壁１の壁面に垂直に突設された水平部１２ａと、当該水平部１２ａの基端側に芯杭１０のフランジ１０ａの表面に沿って垂設された垂直部１２ｂと当該垂直部１２ｂの下端部と前記アーム部１２ａの先端部間に斜めに設置された傾斜部１２ｃとからトラス状に形成され、また延出部１３の下端部には真下に開口し、芯杭１０の突起１１に掛止される掛止部１３ａが形成されている。   The arm portion 12 includes a horizontal portion 12a projecting perpendicularly to the wall surface of the mountain retaining wall 1, and a vertical portion 12b suspended from the base end side of the horizontal portion 12a along the surface of the flange 10a of the core pile 10. A truss-like shape is formed from the lower end of the vertical portion 12b and the inclined portion 12c installed obliquely between the distal ends of the arm portions 12a. A latching portion 13 a that is latched by the ten protrusions 11 is formed.

なお、この場合のアーム部１２の水平部１２ａ、垂直部１２ｂおよび傾斜部１２ｃはＬ形鋼や溝形鋼などの形鋼材から形成され、延出部１３は鋼板から形成されている。   In this case, the horizontal portion 12a, the vertical portion 12b, and the inclined portion 12c of the arm portion 12 are formed from a shape steel material such as L-shaped steel or grooved steel, and the extending portion 13 is formed from a steel plate.

このように形成された各ブラケット２は、掛止部１３ａを芯杭１０の突起１１に掛止させてアーム部１２を各芯杭１０の側面部に垂直に突出させ、かつ延出部１３を芯杭１０のフランジ１０ａの表面に添わせて各芯杭１０の側面部に設置されている。   Each bracket 2 formed in this manner has the latching portion 13a hooked on the protrusion 11 of the core pile 10 so that the arm portion 12 protrudes perpendicularly to the side surface portion of each core pile 10 and the extension portion 13 is formed. It is installed in the side part of each core pile 10 along the surface of the flange 10a of the core pile 10. FIG.

そして、延出部１３の側面部に下部腹起し３と上部腹起し５が添え付けられ、下部腹起し３と上部腹起し５間に定着金具８が架け渡され、かつ各定着金具８にタイバックアンカー７の基端側７ａが定着ナット９によって定着され、こうして各ブラケット２は各芯杭１０の側面部に固定されている。 Then, a lower flank 3 and an upper flank 5 are attached to the side surface of the extending portion 13, a fixing bracket 8 is bridged between the lower flank 3 and the upper flank 5, and each fixing is performed. The base end side 7 a of the tie back anchor 7 is fixed to the metal fitting 8 by the fixing nut 9, and thus each bracket 2 is fixed to the side surface portion of each core pile 10.

なお、例えば図３(ｂ)に図示するように、突起１１の上端部に角棒状の鋼材片１１ａを必要数重ねて取り付け、ブラケット２を嵩上げすることにより、必要に応じてブラケット２の高さを簡単に調整することができる。   For example, as shown in FIG. 3 (b), a square bar-shaped steel piece 11a is attached to the upper end of the protrusion 11 in a necessary number, and the bracket 2 is raised to raise the height of the bracket 2 as necessary. Can be adjusted easily.

また。例えば図３(ｃ)に図示するように、突起１１の上端部にブラケット２の掛止部１３ａを芯杭１０のフランジ１０ａとの間で挟み込むフック部１１ｂが設けられていることで、ブラケット２をより強固に固定することができる。   Also. For example, as illustrated in FIG. 3C, the hook 2 is provided at the upper end of the protrusion 11 so as to sandwich the hook 13 a of the bracket 2 with the flange 10 a of the core pile 10. Can be fixed more firmly.

さらに、例えば図２(ｂ)に図示するように、山留め壁１に対するタイバックアンカー７の交差角度θが大きいとき、すなわちタイバックアンカー７の傾きが大きいときは、タイバックアンカー７の軸力の相当部分が延出部１３を山留め壁１の壁面に押し付ける力として作用するため、上部腹起し５は省略してもよい。 Further, for example, as shown in FIG. 2B, when the crossing angle θ of the tieback anchor 7 with respect to the retaining wall 1 is large, that is, when the inclination of the tieback anchor 7 is large, the axial force of the tieback anchor 7 is increased. Since the corresponding portion acts as a force for pressing the extending portion 13 against the wall surface of the retaining wall 1, the upper erection 5 may be omitted.

また、図３(ｃ)に図示するフック部１１ｂによりブラケット２が強固に固定され、安定が図れる場合には、上部腹起し５は省略してもよい。 In addition, when the bracket 2 is firmly fixed by the hook portion 11b illustrated in FIG. 3C and stability is achieved, the upper erection 5 may be omitted.

図４(ａ)，(ｂ)は、本願発明の変形例を示し、下部腹起し３に切り梁１４の一端が接合され、上記したタイバックアンカー７が省略されている。この場合、切り梁１４の軸力が下部腹起し３を介して延出部１３を山留め壁１に強く押し付けることで、ブラケット２は山留め壁１の壁面に強固に固定されている。 4 (a) and 4 (b) show a modification of the present invention, in which one end of the cut beam 14 is joined to the lower bulge 3 and the above-described tieback anchor 7 is omitted. In this case, the bracket 2 is firmly fixed to the wall surface of the retaining wall 1 by causing the axial force of the cut beam 14 to rise downward and pressing the extending portion 13 strongly against the retaining wall 1 via 3.

なお、図においては、下部腹起し３の上段側にさらに上部腹起し５が設置され、下部腹起し３と上部腹起し５に上下の切り梁１４の一端がそれぞれ接合されているが、この場合、上段側の上部腹起し５と切り梁１４は無くてもよい。 In the illustrations, upper wale 5 in the upper side of the lower abdomen caused 3 is installed, one end of upper and lower cutting beam 14 to the lower wale 3 and the upper wale 5 is joined respectively However, in this case, the upper belly 5 and the cut beam 14 on the upper side may be omitted.

本願発明は、ブラケットの現場溶接による取付作業、および切断などによる撤去作業がなく、山留め工をきわめて効率的に仮設し、かつ撤去することができる。   The invention of the present application does not have an attachment work by field welding of the bracket and a removal work by cutting or the like, and the mountain fixing work can be temporarily and removed very efficiently.

山留め工の一例を示す一部正面図である。It is a partial front view which shows an example of a mountain clamp. (ａ)は山留め工の一部斜視図、(ｂ)は図１におけるイ−イ線拡大断面図である。(a) is a partial perspective view of a mountain clamp, (b) is an enlarged sectional view taken along the line II in FIG. (ａ)は山留め工の一部分解斜視図、(ｂ)、(ｃ)は芯杭の一部斜視図である。(a) is a partial exploded perspective view of a mountain clamp, (b), (c) is a partial perspective view of a core pile. (ａ)は山留め工の一部視図、(ｂ)は山留め工の一部縦断面図である。(a) is a partial view of the mountain fixing work, (b) is a partial longitudinal sectional view of the mountain fixing work. 従来の山留め工の例を示す山留め壁の一部縦断面図である。It is a partial longitudinal cross-sectional view of the mountain retaining wall which shows the example of the conventional mountain retaining method.

符号の説明Explanation of symbols

１ 山留め壁
２ ブラケット
３ 下部腹起し
４ ブラケット
５ 上部腹起し
６ 地山
７ タイバックアンカー
８ 定着金具
９ 定着ナット
１０ 芯杭
１１ 突起
１２ ブラケット本体
１３ 延出部 DESCRIPTION OF SYMBOLS 1 Mountain retaining wall 2 Bracket 3 Lower side rise 4 Bracket 5 Upper side rise 6 Ground mountain 7 Tieback anchor 8 Fixing metal fitting 9 Fixing nut 10 Core pile 11 Protrusion 12 Bracket main body 13 Extension part

Claims (4)

山留め壁と、当該山留め壁の壁面にその横方向に所定間隔をおいて突設された複数のブラケットと、当該ブラケット間に水平に架け渡された下部腹起しと、当該下部腹起しの上側に水平に架け渡された上部腹起しと、当該上部腹起しと前記下部腹起し間に横方向に所定間隔をおいて架け渡された複数の定着金具と、前記山留め壁の上下腹起し間を貫通して地山に施工された複数のアンカーと、前記上部腹起しと下部腹起しにそれぞれ一端が接合された上段側切り梁および下段側切り梁とを備えて構成され、前記ブラケットは、下部腹起しが載置されたアーム部と、当該アーム部の基端側から山留め壁の壁面に沿って上方に延び、前記上下腹起しがそれぞれ添え付けられていると共に、前記上下腹起しを介して前記上段側切り梁および下段側切り梁によって山留め壁に押し付けられている延出部とから構成され、かつ前記ブラケットは前記山止め壁に設けられた突起に脱着自在に係止され、前記定着金具に前記アンカーの基端側が定着されてなることを特徴とする山留め壁の構造。 A retaining wall, a plurality of brackets projecting from the wall surface of the retaining wall at a predetermined interval in the lateral direction, a lower erection extending horizontally between the brackets, and the lower erection An upper bulge horizontally spanned on the upper side, a plurality of fixing brackets spanned at predetermined intervals in the lateral direction between the upper bulge and the lower flank, and an upper portion of the retaining wall A plurality of anchors constructed in the natural ground through the lower abdominal erections, and an upper-stage cut beam and a lower-stage cut beam each having one end joined to the upper flank and the lower flank The bracket has an arm portion on which the lower bulge is placed, and extends upward along the wall surface of the mountain retaining wall from the base end side of the arm portion, and the vertical bulge is attached to the bracket . And the upper stage side beam and the lower stage side beam through the upper and lower abdomen Is composed of a extending portion is pressed against the earth retaining wall by the beam, and the bracket is the detachably engaged with the projection provided on Yamadome wall, proximal end side of the anchor is fixed to the fixing bracket A retaining wall structure characterized by 前記突起には前記ブラケットの掛止部を前記山留め壁の壁面との間で挟み込むようにフック部が設けられてなることを特徴とする請求項１記載の山留め壁の構造。 2. The mountain retaining wall structure according to claim 1, wherein a hook portion is provided on the protrusion so as to sandwich the hooking portion of the bracket with the wall surface of the mountain retaining wall . 前記突起に前記ブラケットの高さ調整用の鋼材片が必要数重ねて取り付けられてなることを特徴とする請求項１または２記載の山留め壁の構造。 The structure of the retaining wall according to claim 1 or 2, wherein a steel material piece for height adjustment of the bracket is attached to the protrusion in a necessary number. 前記突起は、山留め壁内に所定間隔をおいて建て込まれた芯杭に突設されてなることを特徴とする請求項１〜３のいずれかひとつに記載の山留め壁の構造。 The structure of the retaining wall according to any one of claims 1 to 3, wherein the protrusion is projected on a core pile built at a predetermined interval in the retaining wall .
JP2004220122A 2004-07-28 2004-07-28 Retaining wall structure Expired - Fee Related JP4581536B2 (en)

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Publication number Priority date Publication date Assignee Title
JP5541788B2 (en) * 2010-05-14 2014-07-09 ジェコス株式会社 Yamadome structure
JP6535558B2 (en) * 2015-09-17 2019-06-26 ジェコス株式会社 Stomach
JP6826957B2 (en) * 2017-06-26 2021-02-10 鹿島建設株式会社 How to install support

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5682053U (en) * 1979-11-28 1981-07-02
JPH04126938U (en) * 1991-04-25 1992-11-19 戸田建設株式会社 Bracket for getting up on your stomach
JPH11303087A (en) * 1998-04-16 1999-11-02 Kinki Nippon Railway Co Ltd Retaining wall using corrosion-resistant structure anchor
JP2001032280A (en) * 1999-07-19 2001-02-06 Japan Steel & Tube Constr Co Ltd Wale hanger sheet pile construction method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5682053U (en) * 1979-11-28 1981-07-02
JPH04126938U (en) * 1991-04-25 1992-11-19 戸田建設株式会社 Bracket for getting up on your stomach
JPH11303087A (en) * 1998-04-16 1999-11-02 Kinki Nippon Railway Co Ltd Retaining wall using corrosion-resistant structure anchor
JP2001032280A (en) * 1999-07-19 2001-02-06 Japan Steel & Tube Constr Co Ltd Wale hanger sheet pile construction method

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