JP7194850B1 - Auxiliary support device for retaining wall panels - Google Patents

Auxiliary support device for retaining wall panels Download PDF

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JP7194850B1
JP7194850B1 JP2022020973A JP2022020973A JP7194850B1 JP 7194850 B1 JP7194850 B1 JP 7194850B1 JP 2022020973 A JP2022020973 A JP 2022020973A JP 2022020973 A JP2022020973 A JP 2022020973A JP 7194850 B1 JP7194850 B1 JP 7194850B1
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retaining wall
wall panel
slope
marking block
support
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JP2023118174A (en
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哲也 加来
道洋 早川
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SE Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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    • Y02A10/23—Dune restoration or creation; Cliff stabilisation

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Abstract

【課題】法面の上部に、下方に配置される擁壁パネルを支持する能力を持つ墨出しブロックを先行して固定し、墨出しブロックに擁壁パネルを支持させて擁壁６を構築する方法において、墨出しブロックが擁壁パネルを支持する能力を失ったときに、墨出しブロックに代わって擁壁パネルを補助的に支持する。【解決手段】擁壁パネル５の下方寄りに対応した位置かその付近の地山に形成された支持面１１上に設置され、擁壁パネル５を直接、もしくは間接的に支持可能に擁壁パネル５に組み合わせられ、擁壁パネル５の荷重を負担可能な支柱２に擁壁パネル５を補助的に支持させる。支柱２は平常時に擁壁パネル５の荷重を負担せず、擁壁パネル５が墨出しブロック４に支持されなくなったときに墨出しブロック４に代わって擁壁パネル５を支持する。【選択図】図１A retaining wall 6 is constructed by firstly fixing a marking block capable of supporting a retaining wall panel placed below to the upper part of a slope, and having the marking block support the retaining wall panel. The method supplementally supports the retaining wall panel in place of the marking block when the marking block loses its ability to support the retaining wall panel. A retaining wall panel is installed on a supporting surface 11 formed in the natural ground at or near the position corresponding to the lower side of the retaining wall panel 5, and can support the retaining wall panel 5 directly or indirectly. A retaining wall panel 5 is supplementarily supported by a post 2 which is combined with a retaining wall panel 5 and can bear the load of the retaining wall panel 5.例文帳に追加The post 2 does not bear the load of the retaining wall panel 5 in normal times, and supports the retaining wall panel 5 in place of the marking block 4 when the retaining wall panel 5 is no longer supported by the marking block 4. - 特許庁[Selection drawing] Fig. 1

Description

本発明は法面の安定化の目的で、法面に沿って配列し、擁壁を構成する擁壁パネルを設置完了まで支持する墨出しブロックからの擁壁パネルの離脱に備え、擁壁パネルを補助的に支持する擁壁パネルの補助支持装置に関するものである。 The present invention aims at stabilizing the slope surface, and prepares for the removal of the retaining wall panels from the marking blocks that are arranged along the slope surface and support the retaining wall panels constituting the retaining wall until the installation is completed. The present invention relates to an auxiliary supporting device for retaining wall panels that auxiliaryly supports a retaining wall panel.

地山への掘削（切土）により形成された法面を崩落に対して安定化させる目的で、法面に沿って擁壁パネルを高さ方向に配列させて擁壁を構築する場合に、最上段に設置されるべき擁壁パネルの位置が決まっているような場合、擁壁パネルは上段側から下段側へ向かって設置されていくことになる。従って法面に最初に設置される最上段の擁壁パネルは地山に支持されながら、法面に設置される。 When constructing a retaining wall by arranging retaining wall panels in the height direction along the slope for the purpose of stabilizing the slope formed by excavating (cutting) the ground against collapse, When the position of the retaining wall panel to be installed on the top tier is determined, the retaining wall panels are installed from the upper tier side to the lower tier side. Therefore, the uppermost retaining wall panel, which is installed first on the slope, is installed on the slope while being supported by the ground.

この場合、ある段の擁壁パネルを法面に設置するときに、その擁壁パネルを上段側の擁壁パネルに支持させることができなければ、擁壁パネルはその下端において地山に支持されるしかない。この関係で、設置すべき擁壁パネルの下端が位置する箇所の地山を残し、地山に水平面等の支持面を形成しながら、地山を掘削することが必要になる（特許文献１～特許文献５参照）。 In this case, when installing a retaining wall panel on a slope, if the retaining wall panel cannot be supported by the upper retaining wall panel, the retaining wall panel will be supported by the natural ground at its lower end. I have no choice but to In this connection, it is necessary to excavate the natural ground while leaving the natural ground where the lower end of the retaining wall panel to be installed is located and forming a supporting surface such as a horizontal surface on the natural ground (Patent Documents 1 to 10). See Patent Document 5).

但し、擁壁パネルを上段側から下段側へ向かって設置する方法では、擁壁パネルは主に地山の支持面に支持された状態で位置決めされながら、法面に設置されるため、支持面の形成には正確さが要求される。支持面の形成に誤差があれば、擁壁パネルの設置に施工誤差を残し、擁壁パネルの幅方向に配列する擁壁パネルを整然と配列させることが難しくなるからである。 However, in the method of installing the retaining wall panels from the upper level to the lower level, the retaining wall panels are installed on the slope while being supported mainly by the supporting surface of the natural ground. The formation of the requires precision. This is because if there is an error in the formation of the support surface, a construction error will remain in the installation of the retaining wall panels, making it difficult to arrange the retaining wall panels in the width direction in an orderly manner.

それに対し、下段側の擁壁パネルを上段側の擁壁パネルに支持させながら、擁壁パネルを下向きに設置していくことを可能にする法面安定化擁壁とその構築方法を出願人は先に提案している（特許文献６参照）。 In contrast, the applicant has proposed a slope-stabilizing retaining wall and a method for constructing the same that enables the retaining wall panels to be installed downward while supporting the lower retaining wall panel on the upper retaining wall panel. This has been proposed previously (see Patent Document 6).

この方法では法面の上部に、下方に配置される擁壁パネルを支持する能力を持つ墨出しブロックを擁壁パネルに先行して固定し、墨出しブロックに擁壁パネルを係合させることで、擁壁パネルを墨出しブロックに支持させている。 In this method, a marking block capable of supporting the retaining wall panel placed below is fixed on the upper part of the slope ahead of the retaining wall panel, and the retaining wall panel is engaged with the marking block. , the retaining wall panels are supported by marking blocks.

特開平７－３４４６４号公報（請求項１、段落０００５～００１８、図６～図８）Japanese Patent Laid-Open No. 7-34464 (claim 1, paragraphs 0005 to 0018, FIGS. 6 to 8) 特開２０１０－１０６４３３号公報（段落００２０、図４～図８）JP 2010-106433 A (Paragraph 0020, FIGS. 4 to 8) 特開２０１２－２４６７０６号公報（請求項１、段落００１２～００１６、図２～図５）Japanese Patent Application Laid-Open No. 2012-246706 (claim 1, paragraphs 0012 to 0016, FIGS. 2 to 5) 特開２０１４－１０９１８９号公報（請求項１、段落０００５、０００６、図１、図２）JP 2014-109189 A (claim 1, paragraphs 0005 and 0006, FIGS. 1 and 2) 特開２０１５－１０８４号公報（図１～図５）Japanese Unexamined Patent Application Publication No. 2015-1084 (Figs. 1 to 5) 特許第６７４６２６４号公報（請求項１、段落０００９～００３６、図１～図６）Japanese Patent No. 6746264 (claim 1, paragraphs 0009 to 0036, FIGS. 1 to 6)

但し、各擁壁パネルはそれ自体を厚さ方向に貫通する補強材が地中に埋設され、充填材の充填により地中に定着されることで、法面に固定された状態になり、その作業が終了するまでは、墨出しブロックが擁壁パネルを支持することになる。 However, each retaining wall panel is fixed to the slope by embedding a reinforcing material that penetrates in the thickness direction of itself into the ground and fixing it to the ground by filling the filler material. The marking blocks will support the retaining wall panels until the work is completed.

このため、補強材が完全に定着される前には、例えば地震動の発生等、何らかの原因で墨出しブロックが擁壁パネルの荷重を負担する能力を失ったとき等に、擁壁パネルが墨出しブロックから離脱し、墨出しブロックから落下する可能性がないとは言えない。 For this reason, before the reinforcing material is completely fixed, when the marking block loses its ability to bear the load of the retaining wall panel for some reason, such as the occurrence of seismic motion, the retaining wall panel may be damaged. It cannot be said that there is no possibility of breaking away from the block and falling from the marking block.

本発明は上記背景より、墨出しブロックが擁壁パネルの荷重を負担する能力を失ったときに、備えとして墨出しブロックに代わって擁壁パネルを支持する補助支持装置を提案するものである。 In view of the above background, the present invention proposes an auxiliary support device for supporting the retaining wall panel in place of the marking block as a preparation when the marking block loses the ability to bear the load of the retaining wall panel.

請求項１に記載の発明の擁壁パネルの補助支持装置は、法面の上部に、軸方向を前記法面の上部に沿った方向に向けて配置され、背面側から地山側へ突出する定着具が地山中に埋設されて前記法面に固定される墨出しブロックと、この墨出しブロックの下方に配置されて前記墨出しブロックに支持されながら、地山中に定着される補強材が貫通し、この補強材の前記法面から突出する頭部が定着される擁壁パネルとを備える法面安定化擁壁において、
前記擁壁パネルの下方寄りの地山に形成された支持面上に設置され、前記補強材の地中への定着が完了するまでの間、前記墨出しブロックに支持された状態にある前記擁壁パネルを補助的に支持する補助支持装置であり、
前記支持面上に支持されて前記擁壁パネルを直接、もしくは間接的に支持可能に、擁壁パネルに組み合わせられ、前記擁壁パネルの荷重を負担可能な支柱を持ち、
前記支柱が平常時に前記擁壁パネルの荷重を負担せず、前記擁壁パネルが前記墨出しブロックに支持されなくなったときに、前記擁壁パネルとへの支持部分で前記擁壁パネルを支持し、前記墨出しブロックに代わって前記擁壁パネルの荷重を負担することを構成要件とする。 The auxiliary supporting device for retaining wall panels of the invention described in claim 1 is arranged above the slope with its axial direction directed along the upper part of the slope, and the anchoring device protrudes from the rear side toward the natural ground side. A marking block in which tools are embedded in the ground and fixed to the slope, and a reinforcing material fixed in the ground while being placed below the marking block and supported by the marking block penetrates. and a retaining wall panel to which the head of the stiffener protruding from the slope is anchored,
The retaining wall panel is installed on a support surface formed in the ground near the lower side of the retaining wall panel, and the retaining wall panel is supported by the marking block until the reinforcing member is completely fixed in the ground. An auxiliary support device for auxiliary supporting the wall panel,
having a strut supported on the support surface and capable of directly or indirectly supporting the retaining wall panel and capable of bearing the load of the retaining wall panel;
The support does not bear the load of the retaining wall panel in normal times, and when the retaining wall panel is no longer supported by the marking block, the supporting portion of the retaining wall panel supports the retaining wall panel. , a constituent requirement is to bear the load of the retaining wall panel instead of the marking block.

「法面の上部に沿った方向」とは、擁壁パネル３が長さ方向に配列する場合の長さ方向であり、主に水平方向であるが、水平に対して傾斜した方向であることもある。「法面の上部」は基本的に図１０－（ａ）に示す法面１０の最上部の縦断面上、隅角部となった部分を指す。擁壁パネル５の長さ方向（法面１０の上部に沿った方向）は墨出しブロック４の軸方向である。この水平方向等に軸方向を向けて墨出しブロック４が法面１０に配置される。擁壁パネル５の幅方向は法面１０に沿った高さ方向になる。 "A direction along the upper part of the slope" is the length direction when the retaining wall panels 3 are arranged in the length direction, and is mainly horizontal, but the direction is slanted with respect to the horizontal. There is also The “upper portion of the slope” basically refers to a corner portion on the longitudinal section of the uppermost portion of the slope 10 shown in FIG. 10-(a). The length direction of the retaining wall panel 5 (the direction along the top of the slope 10) is the axial direction of the marking block 4. As shown in FIG. The marking block 4 is arranged on the slope 10 with its axial direction directed in the horizontal direction or the like. The width direction of the retaining wall panel 5 is the height direction along the slope 10 .

墨出しブロック４は主に図１－（ａ）に示すようにその背面側から突出する定着具（アンカー）４３が地山中に埋設（定着）されることで、法面１０に固定される。定着具４３は一部が墨出しブロック４中に埋設された状態で墨出しブロック４の背面から突出する場合と、墨出しブロック４を厚さ方向に貫通する場合がある。 The marking block 4 is fixed to the slope 10 mainly by embedding (fixing) in the ground a fixing tool (anchor) 43 protruding from the rear side as shown in FIG. 1-(a). The fixing member 43 may protrude from the rear surface of the marking block 4 while being partly embedded in the marking block 4 or penetrate the marking block 4 in the thickness direction.

いずれの場合も、定着具４３は予め、または最終的に（墨出しブロック４の法面１０への固定後）墨出しブロック４に一体化する。定着具４３の地山中での定着状態は単純に地山中に挿入（貫入）されて維持する場合と、地山中に注入される充填材中に埋設されて維持する場合がある。 In either case, the fixture 43 is integrated with the marking block 4 in advance or finally (after fixing the marking block 4 to the slope 10). The fixed state of the fixing member 43 in the ground may be maintained by being simply inserted (penetrated) into the ground, or may be maintained by being buried in a filler injected into the ground.

擁壁パネル５は墨出しブロック４には基本的にそれぞれの対向する面に形成される凸部５２と凹部４２が対向する方向に互いに嵌合し、擁壁パネル５が墨出しブロック４に下向きに係合することで、支持される。係合のみでは擁壁パネル５の墨出しブロック４への支持が困難な場合には、図７に示すように擁壁パネル５を厚さ方向に貫通するボルト８１を墨出しブロック４に螺入させるか、貫通させることで、墨出しブロック４による擁壁パネル５の支持が補われる。 The retaining wall panel 5 is basically fitted to the marking block 4 so that the protrusions 52 and the recesses 42 formed on the respective opposing surfaces are fitted to each other in the facing directions, and the retaining wall panel 5 faces the marking block 4 downward. is supported by engaging the If it is difficult to support the retaining wall panel 5 to the marking block 4 only by engagement, as shown in FIG. The support of the retaining wall panel 5 by the marking block 4 is supplemented by making or penetrating the retaining wall panel 5. - 特許庁

擁壁パネル５は図８－（ｄ）に示すように厚さ方向に貫通する補強材７が地山中に形成される削孔１２中に挿入され、グラウト材中に埋設されることで、擁壁パネル５が法面１０に固定された状態を永続的に維持する。削孔１２中への補強材７の挿入とグラウト材の充填後には墨出しブロック４は擁壁パネル５の支持から解放される。 As shown in FIG. 8-(d), the retaining wall panel 5 is formed by inserting reinforcing members 7 penetrating in the thickness direction into drilled holes 12 formed in the ground and embedding them in the grout material. To permanently maintain a state in which a wall panel 5 is fixed to a slope 10. - 特許庁After inserting the reinforcing material 7 into the drilled hole 12 and filling with grouting material, the marking block 4 is released from the support of the retaining wall panel 5 .

言い換えれば、墨出しブロック４は補強材７の挿入とグラウト材の充填が終了するまでの間、擁壁パネル５を暫定的（仮）に支持する。補強材７は図６－（ｂ）に示すように擁壁パネル５の立面上の中央部等に厚さ方向に貫通して形成された挿通孔５５を挿通する。補助支持装置１は削孔１２中への補強材７の挿入とグラウト材の注入までの間、擁壁パネル５が墨出しブロック４から離脱したときの備え（フェイルセーフ）として、擁壁パネル５の落下を防止する機能を発揮する。 In other words, the marking block 4 provisionally (temporarily) supports the retaining wall panel 5 until the insertion of the reinforcing material 7 and the filling of the grout material are completed. As shown in FIG. 6-(b), the reinforcing member 7 is inserted through an insertion hole 55 which is formed through the retaining wall panel 5 in the thickness direction, such as at the central portion of the upright surface of the retaining wall panel 5 . The auxiliary support device 1 is used as a fail-safe for when the retaining wall panel 5 is separated from the marking block 4 during the period from the insertion of the reinforcing material 7 into the drilled hole 12 to the injection of the grout material. It exhibits the function of preventing the fall of

地山は図８－（ａ）に示すように法面１０に先行して設置される墨出しブロック４と、これに直接、支持される１段目の擁壁パネル５を設置するために掘削され、このときに形成された法面１０に（ｃ）に示すように墨出しブロック４と擁壁パネル５が設置される。このときの法面１０の下には未掘削の地山が残されている。この法面１０下の地山の上面が請求項１における「支持面１１」になる。 As shown in FIG. 8-(a), the ground is excavated to install the marking block 4 installed preceding the slope 10 and the first stage retaining wall panel 5 directly supported by this. Then, the marking block 4 and the retaining wall panel 5 are installed on the slope 10 formed at this time as shown in (c). Unexcavated natural ground remains under the slope 10 at this time. The upper surface of the natural ground under the slope 10 is the "support surface 11" in claim 1.

この支持面１１上に支柱２を有する補助支持装置１が設置される。補助支持装置１は擁壁パネル５の長さ方向には１枚の擁壁パネル５の質量に応じ、長さ方向の中央部の１箇所、または長さ方向の両側寄りの位置を含む２箇所以上に配置される。長さ方向の両側寄りの位置は図３に示すように中央部と両側の中間部の位置を含む。 An auxiliary support device 1 having a column 2 is installed on this support surface 11 . The auxiliary support device 1 is provided in the longitudinal direction of the retaining wall panel 5 depending on the mass of one retaining wall panel 5, at one point in the center in the longitudinal direction, or at two points including the positions on both sides in the longitudinal direction. placed above. The lengthwise side positions include the middle position and the side middle positions as shown in FIG.

支持面１１は補助支持装置１を安定させて設置する上では水平面に形成されることが好ましいが、補助支持装置１の底面（ベースプレート３４の底面等）が補助支持装置１の本体である支柱２に対して任意の方向に回転自在に連結（自在継手）されているような場合には、必ずしもその必要はない。 The support surface 11 is preferably formed on a horizontal surface in order to stably install the auxiliary support device 1 , but the bottom surface of the auxiliary support device 1 (such as the bottom surface of the base plate 34 ) is the main body of the auxiliary support device 1 . It is not always necessary if it is connected (universal joint) so as to be rotatable in any direction.

請求項１における「擁壁パネルの下方寄り」とは、擁壁パネル５の幅方向の下方寄りを指し、主には擁壁パネル５の下端部に対応した位置かその付近等を指す。「下方」寄りである理由は、下端部が法面１０の表面側（切土側）に位置するように擁壁パネル５が鉛直に対して傾斜して法面１０に固定されることが多い関係で、擁壁パネル５が支持面１１上に設置される支柱２に近いためであり、下端部に対応した位置が最適である。 The "lower side of the retaining wall panel" in claim 1 refers to the lower side of the retaining wall panel 5 in the width direction, and mainly refers to a position corresponding to the lower end of the retaining wall panel 5 or its vicinity. The reason for the "downward" side is that the retaining wall panel 5 is often fixed to the slope 10 at an angle with respect to the vertical so that the lower end is located on the surface side (cut side) of the slope 10. This is because the retaining wall panel 5 is close to the pillars 2 installed on the support surface 11, and the position corresponding to the lower end is optimal.

請求項１における「支柱を持ち」とは、少なくとも「擁壁パネル５の荷重を負担可能な支柱２」から補助支持装置１が構成されることを言い、支柱２に、擁壁パネル５に連結（接続）され、擁壁パネル５を支持し得る支持部分が付属する場合と、支持部分が別体として組み合わせられる場合があることを言う。この他、何らかの理由で墨出しブロック４から降下、または落下した擁壁パネル５を支柱２が支持した後、擁壁パネル５を墨出しブロック４に支持されていた元の位置に復元させるための昇降装置（ジャッキ）３が補助支持装置１として備えられること（請求項３）も含む。 "Holding a support" in claim 1 means that the auxiliary support device 1 is composed of at least "a support 2 capable of bearing the load of the retaining wall panel 5", and is connected to the support 2 and the retaining wall panel 5. (connected) and attached with a supporting portion capable of supporting the retaining wall panel 5, and in other cases the supporting portion is combined as a separate body. In addition, after the support 2 supports the retaining wall panel 5 that has fallen or fallen from the marking block 4 for some reason, the retaining wall panel 5 is restored to its original position supported by the marking block 4. It also includes that the lifting device (jack) 3 is provided as the auxiliary support device 1 (Claim 3).

「擁壁パネルを直接、もしくは間接的に支持可能に、擁壁パネルに組み合わせられ」とは、支柱２の支持部分が図２に示すように擁壁パネル５を下方側から支持し得る場合と、図１に示すように上方側から吊り支持し得る場合があることを言う。下方側から支持し得る場合、支柱２の支持部分（受け材２４）（支持面）には、擁壁パネル５を支持したとき、擁壁パネル５の荷重は圧縮力として伝達される。「支持部分」は擁壁パネル５の荷重を直接、負担し、支柱２（補助支持装置１）に伝達する部分を指す。 "Combined with a retaining wall panel so as to be able to support the retaining wall panel directly or indirectly" means that the supporting portion of the support column 2 can support the retaining wall panel 5 from below as shown in FIG. , as shown in FIG. When the retaining wall panel 5 can be supported from below, the load of the retaining wall panel 5 is transmitted as a compressive force to the supporting portion (receiving material 24) (supporting surface) of the column 2 when the retaining wall panel 5 is supported. A "supporting portion" refers to a portion that directly bears the load of the retaining wall panel 5 and transmits it to the support column 2 (auxiliary support device 1).

「擁壁パネルの荷重」は主に擁壁パネル５の自重を言うが、擁壁パネル５の背面側に充填される充填材７１やその他の付属する、または関連する部品等の質量を含むこともある。以下では支柱２が擁壁パネル５を「支持し得る」ことを単に「支持する」とも言う。 "Retaining wall panel load" mainly refers to the own weight of the retaining wall panel 5, but includes the mass of the filler 71 filled on the back side of the retaining wall panel 5 and other attached or related parts. There is also In the following, the fact that the column 2 "can support" the retaining wall panel 5 is also simply referred to as "supporting".

擁壁パネル５を下方側から支持する場合、支持部分（受け材２４）が擁壁パネル５を支持したときに擁壁パネル５が支柱２に対して滑りを生じて支柱２から落下しないよう、例えば図２に示すように水平方向に係合するか、支持部分の支持面に摩擦力が大きくなる材料が接着される等の落下防止対策が採られることが適切である。 In the case of supporting the retaining wall panel 5 from below, when the retaining wall panel 5 is supported by the support part (receiving material 24), the retaining wall panel 5 does not slip on the support 2 and fall off the support 2. For example, as shown in FIG. 2, it is appropriate to take measures to prevent falling, such as engaging in the horizontal direction or adhering a material that increases the frictional force to the supporting surface of the supporting portion.

支柱２が擁壁パネル５を上方側から吊り支持する場合、支柱２の支持部分（連結部分）には、擁壁パネル５を支持したとき、擁壁パネル５の荷重は引張力として伝達される。支柱２の支持部分は支柱２の本体である場合と、支柱２に接続された、支柱２の一部である場合がある。上方側から吊り支持する場合には、支柱２の支持部分と擁壁パネル５との間に、擁壁パネル５を支持部分に連結するための連結材２３が介在し（請求項２）、連結材２３が引張力を負担する。 When the support 2 supports the retaining wall panel 5 from above, the load of the retaining wall panel 5 is transmitted as a tensile force to the supporting portion (connecting portion) of the support 2 when the retaining wall panel 5 is supported. . The supporting portion of the strut 2 may be the main body of the strut 2 or a part of the strut 2 connected to the strut 2 . When suspending and supporting from above, a connecting member 23 for connecting the retaining wall panel 5 to the supporting portion is interposed between the supporting portion of the column 2 and the retaining wall panel 5 (claim 2). Material 23 bears the tensile force.

この場合、支柱２の擁壁パネル５への支持部分は具体的には、例えば擁壁パネル５の下方寄りの位置に、連結部２１ａを有する被吊り材２１が接続される一方、支柱２の被吊り材２１に対応した位置に、連結部２２ａを有し、被吊り材２１の連結部２１ａに直接、もしくは間接的に連結される吊り材２２が接続されることで（請求項２）、構成される。被吊り材２１の連結部２１ａと吊り材２２の連結部２２ａは共に、擁壁パネル５の荷重を負担可能な能力（強度）を有する（請求項２）。 In this case, the supporting portion of the column 2 to the retaining wall panel 5 is, for example, connected to a hanging member 21 having a connecting portion 21a at a position near the bottom of the retaining wall panel 5, while the column 2 By connecting the hanging member 22, which has a connecting portion 22a at a position corresponding to the suspended member 21 and is directly or indirectly connected to the connecting portion 21a of the suspended member 21 (claim 2), Configured. Both the connecting portion 21a of the suspended member 21 and the connecting portion 22a of the hanging member 22 have the capacity (strength) to bear the load of the retaining wall panel 5 (claim 2).

「直接、連結される」とは、被吊り材２１の連結部２１ａと吊り材２２の連結部２２ａが直接、連結されることを言い、「間接的に連結される」とは、被吊り材２１の連結部２１ａと吊り材２２の連結部２２ａのそれぞれに、図１に示すように擁壁パネル５の荷重を負担可能な連結部２３ａ、２３ｂを有する連結材２３の連結部２３ａ、２３ｂが連結されることを言う。 “Directly connected” means that the connecting portion 21a of the hanging member 21 and the connecting portion 22a of the hanging member 22 are directly connected, and “indirectly connected” means that the hanging member As shown in FIG. 1, connecting portions 23a and 23b of the connecting member 23 having connecting portions 23a and 23b capable of bearing the load of the retaining wall panel 5 are connected to the connecting portion 21a of the connecting member 21 and the connecting portion 22a of the hanging member 22, respectively. It is said to be connected.

「擁壁パネル５の荷重を負担可能な」とは、連結部２１ａ、２２ａ、２３ａ、２３ｂに擁壁パネル５の荷重が作用したときに、その荷重に耐える引張強度を有し、被吊り材２１と吊り材２２との連結状態が解除されない能力を有することを言う。被吊り材２１と吊り材２２の各連結部２１ａ、２２ａ、２３ａ、２３ｂは主に環状やフック状に形成されるが、特に問われない。 The term "capable of bearing the load of the retaining wall panel 5" means that when the load of the retaining wall panel 5 is applied to the connecting portions 21a, 22a, 23a, and 23b, the suspended material has a tensile strength that can withstand the load. 21 and hanging member 22 have the ability not to be released from the connected state. The connecting portions 21a, 22a, 23a, and 23b of the hanging member 21 and the hanging member 22 are mainly formed in a ring shape or a hook shape, but there is no particular limitation.

請求項１における「支柱は平常時に擁壁パネル３の荷重を負担せず」とは、擁壁パネル５への支柱２の支持部分が互いに非接触状態にある場合と、接触しながらも圧縮力か引張力を及ぼしていない状態にある場合があることを言う。「擁壁パネル５が墨出しブロック４に支持されなくなったとき」とは、地震動の発生時等、何らかの原因で偶発的に擁壁パネル５が墨出しブロック４から離脱したときと、墨出しブロック４が擁壁パネル５を支持する能力を失ったときを含む。擁壁パネル５が墨出しブロック４に支持されなくなったとき、擁壁パネル５は支柱２の支持部分で支柱２に支持される。「擁壁パネル５への支柱２の支持部分」は擁壁パネル５を支持する支柱２の支持部分を指す。 In Claim 1, "the support does not bear the load of the retaining wall panel 3 in normal times" means that the support portions of the support 2 to the retaining wall panel 5 are in a non-contact state with each other, and the compressive force is applied even when they are in contact with each other. It means that it may be in a state where it is not exerting a pulling force. "When the retaining wall panel 5 is no longer supported by the marking block 4" means when the retaining wall panel 5 accidentally separates from the marking block 4 for some reason, such as when an earthquake occurs. 4 loses its ability to support retaining wall panel 5. When the retaining wall panel 5 is no longer supported by the marking block 4, the retaining wall panel 5 is supported by the supporting portion of the supporting column 2. - 特許庁"Supporting portion of strut 2 to retaining wall panel 5" refers to supporting portion of strut 2 that supports retaining wall panel 5. FIG.

以上のように補助支持装置１は平常時には擁壁パネル５の荷重を負担しない状態にありながらも、擁壁パネル５が墨出しブロック４に支持されなくなったときに、擁壁パネル５への支持部分で擁壁パネル５を支持し、墨出しブロック４に代わって擁壁パネル５の荷重を負担する。従って補助支持装置１は擁壁パネル５が墨出しブロック４から降下、または落下したときの備えとしてのフェイルセーフとして機能することが可能である。この結果、擁壁パネル５が墨出しブロック４から離脱したときにも、墨出しブロック４から落下することが防止される。 As described above, the auxiliary support device 1 normally does not bear the load of the retaining wall panel 5, but when the retaining wall panel 5 is no longer supported by the marking blocks 4, it supports the retaining wall panel 5. The retaining wall panel 5 is supported by the part, and the load of the retaining wall panel 5 is borne instead of the marking block 4. - 特許庁Therefore, the auxiliary support device 1 can function as a fail-safe in preparation for when the retaining wall panel 5 drops or falls from the marking block 4 . As a result, even when the retaining wall panel 5 is separated from the marking block 4, it is prevented from falling from the marking block 4.例文帳に追加

支柱２の支持部分が平常時、擁壁パネル５のいずれかの部分に接触している場合には、擁壁パネル５が墨出しブロック４に支持されている状態から支柱２に支持された状態に至るまでに原則的に降下せず、位置が変わらないことが想定される。接触していない場合には、擁壁パネル５が墨出しブロック４に支持されている状態から支柱２に支持された状態に至るまでに降下することが想定される。 When the support portion of the support column 2 is in contact with any part of the retaining wall panel 5 in normal times, the retaining wall panel 5 is supported by the support column 2 from the state in which it is supported by the marking block 4. In principle, it is assumed that it will not descend and the position will not change until it reaches . If they are not in contact with each other, it is assumed that the retaining wall panel 5 will descend from being supported by the marking blocks 4 to being supported by the pillars 2 .

擁壁パネル５が墨出しブロック４に支持されている状態より降下した場合には、上記のように支柱２の擁壁パネル５との支持部分を元の位置に復帰させるために、昇降装置（ジャッキ）３が支柱２に内蔵、もしくは付属させられる（請求項３）。昇降装置３は支柱２の一部として組み込まれる場合と、支柱２に軸方向に（直列に）接続される場合がある。昇降装置３による支柱２の上昇時には昇降装置３は支持面１１から反力を得て支柱２を上昇させる。 When the retaining wall panel 5 is lowered from the state supported by the marking block 4, the lifting device ( A jack 3 is built in or attached to the post 2 (Claim 3). The lifting device 3 may be incorporated as part of the column 2 or may be connected axially (in series) to the column 2 . When the support 2 is lifted by the lifting device 3 , the lifting device 3 receives a reaction force from the support surface 11 to lift the support 2 .

補助支持装置は擁壁パネルが墨出しブロックに支持されなくなったときに、擁壁パネルへの支持部分で擁壁パネルを支持し、墨出しブロックに代わって擁壁パネルの荷重を負担するため、擁壁パネルが墨出しブロックから離脱したときに、墨出しブロックから落下することを防止することができる。 When the retaining wall panel is no longer supported by the marking block, the auxiliary supporting device supports the retaining wall panel with the supporting portion to the retaining wall panel and bears the load of the retaining wall panel instead of the marking block. When the retaining wall panel is separated from the marking block, it can be prevented from falling from the marking block.

（ａ）は擁壁パネルを墨出しブロックに支持させながら法面に設置し、地山の支持面上に設置された補助支持装置に補助的に吊り支持可能な状態に組み合わせたときの様子を示した縦断面図、（ｂ）は（ａ）の詳細例を示した破線円部分の拡大図である。(a) shows how the retaining wall panel is installed on the slope while being supported by marking blocks, and combined in a state where it can be suspended and supported by an auxiliary support device installed on the support surface of the natural ground. (b) is an enlarged view of a broken-line circle portion showing a detailed example of (a). 支柱の支持部分が擁壁パネルを下方側から支持可能な状態にした場合の支持部分の詳細例を示した縦断面図である。FIG. 4 is a vertical cross-sectional view showing a detailed example of a supporting portion of a support column when the retaining wall panel can be supported from below; 図１－（ａ）に示す擁壁パネルが長さ方向に３枚、配列したときの擁壁パネルの表面側を示した立面図である。Fig. 1-(a) is an elevational view showing the surface side of the retaining wall panel when three retaining wall panels are arranged in the length direction. （ａ）は法面最上部の上部に沿った方向に配置される墨出しブロックの製作例を示した表面側（擁壁パネル側）の立面図、（ｂ）は（ａ）のｘ－ｘ線断面図である。(a) is an elevation view of the surface side (retaining wall panel side) showing an example of manufacturing marking blocks placed along the uppermost part of the slope, (b) is the x- of (a) It is an x-ray sectional view. （ａ）は図４－（ａ）に示す墨出しブロックの表面側を示した斜視図、（ｂ）は（ａ）の墨出しブロックの背面側（法面側）を示した斜視図である。(a) is a perspective view showing the surface side of the marking block shown in FIG. 4-(a), and (b) is a perspective view showing the back side (slope side) of the marking block in (a). . （ａ）は擁壁パネルの製作例を示した立面図であり、中心線の左側が表面側を、右側が背面側（法面側）を示している。（ｂ）は（ａ）のｘ－ｘ線断面図、（ｃ）は（ａ）の平面図である。(a) is an elevation view showing an example of manufacturing a retaining wall panel, the left side of the center line showing the front side, and the right side showing the rear side (slope side). (b) is a sectional view taken along line xx of (a), and (c) is a plan view of (a). 墨出しブロックに擁壁パネルを支持させた状態で、調整部材と引寄せ装置を用いて擁壁パネル下端部の高さを調整した様子を示した縦断面図である。It is the longitudinal cross-sectional view which showed a mode that the height of the retaining-wall panel lower end part was adjusted using the adjusting member and the attracting apparatus in the state which made the marking block support the retaining-wall panel. （ａ）は地山を掘削し、法面を形成する様子を示した縦断面図、（ｂ）は法面の最上部に墨出しブロックを固定する様子を示した縦断面図、（ｃ）は墨出しブロックに支持させながら、最上段の擁壁パネルを設置する様子を示した縦断面図、（ｄ）は擁壁パネルを地山に固定する補強材を地中に挿入するための削孔を形成し、補強材を挿入した様子を示した縦断面図である。(a) is a vertical cross-sectional view showing how the ground is excavated to form a slope, (b) is a vertical cross-sectional view showing how a marking block is fixed to the top of the slope, and (c) (d) is a longitudinal cross-sectional view showing how the uppermost retaining wall panel is installed while being supported by marking blocks; FIG. 4 is a vertical cross-sectional view showing a state in which a hole is formed and a reinforcing material is inserted; （ａ）は擁壁パネルの背面と法面との間の空隙に充填材（裏込め材）を注入する様子を示した縦断面図、（ｂ）は擁壁パネルの表面に突出した補強材の頭部を擁壁パネルに定着する様子を示した縦断面図、（ｃ）は最上段の擁壁パネルの下段側に隣接して擁壁パネルを設置する場合の法面形成時の様子を示した縦断面図、（ｄ）は新たに形成した法面に下段側の擁壁パネルを設置する様子を示した縦断面図である。(a) is a vertical cross-sectional view showing how the filler (backfilling material) is injected into the gap between the back surface and the slope of the retaining wall panel, and (b) is the reinforcing material protruding from the surface of the retaining wall panel. (c) shows how the slope is formed when the retaining wall panel is installed adjacent to the lower side of the uppermost retaining wall panel. (d) is a vertical cross-sectional view showing how the lower retaining wall panel is installed on the newly formed slope. （ａ）は図８－（ｃ）に示す状況を示した斜視図、（ｂ）は図９－（ａ）に示す状況を示した斜視図である。(a) is a perspective view showing the situation shown in FIG. 8-(c), and (b) is a perspective view showing the situation shown in FIG. 9-(a).

図１－（ａ）は法面１０の上部に、軸方向を法面１０の上部に沿った方向に向けて配置され、法面１０に固定される墨出しブロック４と、墨出しブロック４の下方に配置されて墨出しブロック４に支持される擁壁パネル５とを備える法面安定化擁壁（以下、擁壁）６において、擁壁パネル５の下方寄りの地山に形成された支持面１１上に設置される補助支持装置１の構成例を示す。 FIG. 1-(a) shows a marking block 4 that is arranged on the top of the slope 10 with the axial direction directed along the top of the slope 10 and fixed to the slope 10, and the marking block 4 In a slope-stabilizing retaining wall (hereinafter referred to as retaining wall) 6 provided with a retaining wall panel 5 disposed below and supported by marking blocks 4, a support formed in the ground near the lower side of the retaining wall panel 5 1 shows a configuration example of an auxiliary support device 1 installed on a surface 11. FIG.

墨出しブロック４は背面側から地山側へ突出する定着具４３が地山中に埋設されることで、法面１０に固定される。「背面側」は地山側を指す。擁壁６の設置（構築）状態で擁壁６の表面になる側を「表面側」と言う。図面では鉛直面に対して傾斜した法面１０に擁壁６を構築する様子を示しているが、法面１０は鉛直面の場合もある。法面１０の頂部に沿った方向には通常、墨出しブロック４は複数本、擁壁パネル５は複数枚、配列するが、１本の墨出しブロック４と１枚の擁壁パネル５のみから擁壁６が構成される場合もある。 The marking block 4 is fixed to the slope 10 by embedding a fixing member 43 protruding from the back side to the natural ground side in the natural ground. "Back side" refers to the ground side. The side that becomes the surface of the retaining wall 6 when the retaining wall 6 is installed (constructed) is called the "surface side". Although the drawing shows how the retaining wall 6 is constructed on the slope 10 inclined with respect to the vertical plane, the slope 10 may be a vertical plane. A plurality of marking blocks 4 and a plurality of retaining wall panels 5 are usually arranged in the direction along the top of the slope 10, but only one marking block 4 and one retaining wall panel 5 are arranged. A retaining wall 6 may be constructed.

擁壁パネル５は擁壁パネル５自身を厚さ方向に貫通し、地山中に埋設されて定着される補強材７の法面１０から突出する頭部が擁壁パネル５に表面側から定着されることで、法面１０に固定される。補強材７は後述するように地中に形成される削孔１２内に充填される充填材７１内に埋設され、削孔１２内に定着される。墨出しブロック４は擁壁パネル５が補強材７で法面１０に固定されるまでの間、一時的に擁壁パネル５を支持する。墨出しブロック４による擁壁パネル５の具体的な支持方法は後述する。 The retaining wall panel 5 penetrates the retaining wall panel 5 itself in the thickness direction, and the head portion protruding from the slope 10 of the reinforcing member 7 embedded and fixed in the ground is fixed to the retaining wall panel 5 from the surface side. By doing so, it is fixed to the slope 10 . As will be described later, the reinforcing material 7 is embedded in a filling material 71 filled in a drilled hole 12 formed in the ground and fixed in the drilled hole 12 . The marking block 4 temporarily supports the retaining wall panel 5 until the retaining wall panel 5 is fixed to the slope 10 by the reinforcing material 7. - 特許庁A specific method of supporting the retaining wall panel 5 by the marking block 4 will be described later.

補助支持装置１は支持面１１上に支持されて擁壁パネル３を直接、もしくは間接的に支持可能に、擁壁パネル５に組み合わせられ、擁壁パネル５の荷重（自重）を負担可能な支柱２を持つ。支柱２は平常時に擁壁パネル５の荷重を負担せず、擁壁パネル５が墨出しブロック４に支持されなくなったときに、擁壁パネル５への支持部分で擁壁パネル５を支持し、墨出しブロック４に代わって擁壁パネル５の荷重を負担する。支持部分は擁壁パネル５の荷重を負担する部分を指す。補助支持装置１は補強材７による擁壁パネル５の固定が完了するまでの間、墨出しブロック４の備えとして機能する。 The auxiliary support device 1 is supported on the support surface 11 and is combined with the retaining wall panel 5 so as to support the retaining wall panel 3 directly or indirectly, and is a post capable of bearing the load (self weight) of the retaining wall panel 5. have 2 The strut 2 does not bear the load of the retaining wall panel 5 in normal times, and when the retaining wall panel 5 is no longer supported by the marking block 4, the retaining wall panel 5 is supported by the supporting portion to the retaining wall panel 5, The load of the retaining wall panel 5 is borne instead of the marking block 4.例文帳に追加The support portion refers to the portion of the retaining wall panel 5 that bears the load. The auxiliary support device 1 functions as a provision for the marking block 4 until the fixing of the retaining wall panel 5 by the reinforcing member 7 is completed.

支柱２が擁壁パネル５を支持可能に、擁壁パネル５に組み合わせられる方法には、支柱２の支持部分が擁壁パネル５を図１に示すように上方側から吊り支持可能に組み合わせられる場合と、図２に示すように下方側から支持可能に組み合わせられる場合がある。擁壁パネル５は主に下端部かその付近において支柱２に支持されるが、必ずしも下端部である必要はない。 The method of combining the support pillar 2 with the retaining wall panel 5 so as to be able to support the retaining wall panel 5 includes the case where the supporting portion of the support 2 is combined so that the retaining wall panel 5 can be suspended from above as shown in FIG. , and may be combined so as to be supported from the lower side as shown in FIG. The retaining wall panel 5 is mainly supported by the stanchion 2 at or near its lower end, but not necessarily at its lower end.

支柱２には主に１本の、または互いに重なり、全体として伸縮し得るように配置される複数本の鋼管、または角形鋼管等の、主に筒状の鋼材等が使用される。図１に示すように昇降装置３が支柱２に直列に接続される場合には、支柱２は１本の鋼材等からも構成可能である。支柱２に昇降装置３が付属する場合にも、支柱２は複数本の鋼材等から全体として伸縮自在に構成されることもあるが、１本の鋼材等のみから構成されることもある。 The column 2 is mainly made of tubular steel material such as a single steel pipe, a plurality of steel pipes that overlap each other and are arranged so as to be able to expand and contract as a whole, or square steel pipes. When the lifting device 3 is connected in series with the column 2 as shown in FIG. 1, the column 2 can be made of a single piece of steel or the like. Even when the lifting device 3 is attached to the column 2, the column 2 may be composed of a plurality of steel materials or the like so as to be telescopic as a whole, or may be composed of only one steel material or the like.

図１は昇降装置３がジャッキベース等、筒状の支柱２の内部に挿入可能な、外周面に雄ねじが形成された鋼棒等、鋼材の軸材３１とこの雄ねじに螺入するハンドル３３付きのナット３２から構成される場合の例を示す。軸材３１の上部は支柱２内に単純に挿入される。この場合、ハンドル３３（ナット３２）の軸回りの回転に伴い、ハンドル３３が軸材３１に対して昇降し、それに応じ、ハンドル３３かナット３２に支持された支柱２が昇降する。昇降装置３は軸材３１の下端に接続されたベースプレート３４において支持面１１上に載置される。 FIG. 1 shows a lifting device 3, such as a jack base, which can be inserted into the cylindrical post 2 and has a steel shaft 31 such as a steel bar having a male thread formed on its outer peripheral surface and a handle 33 screwed into the male thread. shows an example in which the nut 32 is composed of The upper part of the shaft 31 is simply inserted into the strut 2 . In this case, as the handle 33 (the nut 32) rotates about its axis, the handle 33 moves up and down with respect to the shaft member 31, and accordingly the column 2 supported by the handle 33 or the nut 32 moves up and down. The lifting device 3 rests on the support surface 11 on a base plate 34 connected to the lower end of the shaft member 31 .

支柱２が擁壁パネル５を上方側から吊り支持する場合、擁壁パネル５の下方側に、表面側からアイボルト等の環状、またはフック状の連結部２１ａを有する被吊り材２１が接続される。被吊り材２１に対応した位置の擁壁パネル５の内部には図６－（ａ）、図７に示すように被吊り材２１が接続されるためのインサート５４が埋設されている。 When the supporting column 2 suspends and supports the retaining wall panel 5 from above, a hanging member 21 having an annular or hook-shaped connecting portion 21a such as an eyebolt is connected to the lower side of the retaining wall panel 5 from the surface side. . Inside the retaining wall panel 5 at a position corresponding to the suspended member 21, as shown in FIGS. 6-(a) and 7, an insert 54 for connecting the suspended member 21 is embedded.

この場合、支柱２の上部か中間部等、いずれかの部分に被吊り材２１に連結される環状、またはフック状の連結部２２ａと、支柱２への把持部等、固定部２２ｂを有するパイプハンガー、クランプ等の吊り材２２が支持部分として固定されるか、固定状態に接続される。被吊り材２１と吊り材２２とは双方に互いに係止、または係合する環状、またはフック状の連結部２３ａ、２３ｂを両側に有し、双方に連結されるシャックル等の連結材２３が接続される。 In this case, a pipe having an annular or hook-shaped connecting part 22a connected to the suspended material 21 at any part such as the upper part or the middle part of the support 2 and a fixing part 22b such as a grip part to the support 2 Suspension members 22, such as hangers, clamps, etc., are fixed or fixedly connected as supporting portions. The hanging member 21 and the hanging member 22 have ring-shaped or hook-shaped connecting portions 23a and 23b on both sides that lock or engage with each other. be done.

連結材２３の連結部２３ａ、２３ｂはそれぞれ被吊り材２１の連結部２１ａと吊り材２２の連結部２２ａに連結されるか、係合する。連結材２３の連結部２３ａと被吊り材２１の連結部２１ａと、連結部２３ｂと吊り材２２の連結部２２ａの少なくともいずれか一方は非接触状態に保たれるか、接触しても互いに引張力を伝達しない状態に保たれる。連結部２３ａと連結部２１ａと、連結部２３ｂと連結部２２ａのいずれか一方が非接触状態等であれば、他方が接触状態にあっても、平常時には擁壁パネル５の荷重は補助支持装置１には伝達されない。 The connecting portions 23a and 23b of the connecting member 23 are connected to or engaged with the connecting portion 21a of the hanging member 21 and the connecting portion 22a of the hanging member 22, respectively. At least one of the connecting portion 23a of the connecting member 23 and the connecting portion 21a of the hanging member 21, and the connecting portion 23b and the connecting portion 22a of the hanging member 22 is maintained in a non-contact state, or even if they are in contact, they are mutually pulled. It is kept in a non-power-transmitting state. If either one of the connecting portion 23a and the connecting portion 21a, and the connecting portion 23b and the connecting portion 22a is in a non-contact state or the like, even if the other is in a contact state, the load of the retaining wall panel 5 is normally transferred to the auxiliary support device. 1 is not transmitted.

図１に示す例の場合、吊り材２２は支柱２の外周に単純に外接した状態で支柱２を把持することで、支柱２に固定された状態にもなるが、この固定状態は両者間の摩擦力のみに依存するため、荷重が摩擦力を上回ることによる支柱２からの滑りによる降下の可能性があり得る。この降下を防止する上では、支柱２の外周面に周方向に連続する帯状の溝を形成し、この溝に吊り材２２を外接させながら、溝の境界の凸部に下向きに係合させた状態で、固定部２２ｂが支柱２を把持することが望ましい。 In the case of the example shown in FIG. 1, the hanging member 22 can be fixed to the support column 2 by gripping the support column 2 while simply circumscribing the outer periphery of the support column 2. Since it relies only on the frictional force, there may be a possibility of slipping down from the strut 2 due to the load exceeding the frictional force. In order to prevent this descent, a band-like groove continuous in the circumferential direction is formed on the outer peripheral surface of the support 2, and the suspension member 22 is brought into contact with the groove and engaged downward with the protrusion on the boundary of the groove. It is desirable that the fixing portion 22b grips the column 2 in this state.

図２に示すように支柱２が擁壁パネル５を下方側から支持する場合、基本的に擁壁パネル５の下端部に対応した位置に、支持部分としての受け材２４が接合される等により装着される。受け材２４は支柱２に一体的に形成される場合と、支柱２の外周面に形成された雄ねじに螺合等により接続されるか、または支柱２の外周面に形成された突起（フランジ）に下向きに係合する場合等がある。 As shown in FIG. 2, when the support pillar 2 supports the retaining wall panel 5 from below, a support member 24 is basically joined at a position corresponding to the lower end of the retaining wall panel 5 as a supporting portion. be worn. The receiving member 24 may be formed integrally with the column 2, connected to a male thread formed on the outer peripheral surface of the column 2 by screwing or the like, or may be a projection (flange) formed on the outer peripheral surface of the column 2. may be engaged downward.

図２に示す例の場合、擁壁パネル５が墨出しブロック４による支持を失い、受け材２４が擁壁パネル５を支持したときに、擁壁パネル５が厚さ方向、または幅方向にずれないよう、受け材２４は擁壁パネル５下端部の表面側の隅角部が嵌合、または係合し得る、擁壁パネル５の下端部側に凹形状となった受け部２４ａが形成される。 In the case of the example shown in FIG. 2, when the retaining wall panel 5 loses its support from the marking block 4 and the receiving material 24 supports the retaining wall panel 5, the retaining wall panel 5 shifts in the thickness direction or the width direction. In order to prevent this, the receiving member 24 is formed with a receiving portion 24a having a concave shape on the lower end side of the retaining wall panel 5 so that the corner portion on the surface side of the lower end portion of the retaining wall panel 5 can be fitted or engaged. be.

この場合、受け部２４ａに擁壁パネル５の下端部の表面側、例えば後述の凸部５８が支柱２側に係合することで、支柱２側への滑りが防止される。受け部２４ａが受け材２４（支柱２）の周方向に連続して形成されていれば、支柱２（補助支持装置１）の設置の向きに拘わらず、擁壁パネル５を支持することができる。 In this case, the surface side of the lower end portion of the retaining wall panel 5, for example, a convex portion 58, which will be described later, engages with the receiving portion 24a on the support 2 side, thereby preventing slippage toward the support 2 side. If the receiving portion 24a is formed continuously in the circumferential direction of the receiving member 24 (support 2), the retaining wall panel 5 can be supported regardless of the installation orientation of the support 2 (auxiliary support device 1). .

この他、擁壁パネル５の下端部（凸部５８）が載る受け材２４の上面上に、擁壁パネル５との間の摩擦力が大きいゴム等の材料からなる面材を接着するか、凹凸面を形成する等の方法によっても、擁壁パネル５の受け材２４上での滑りを防止することが可能である。 In addition, on the upper surface of the receiving member 24 on which the lower end portion (projection 58) of the retaining wall panel 5 rests, a surface material made of a material such as rubber having a large frictional force with the retaining wall panel 5 may be adhered. It is also possible to prevent the retaining wall panel 5 from slipping on the receiving member 24 by forming an uneven surface.

なお、擁壁パネル５は墨出しブロック４に支持されている状態では、地震動等、格別な事態が発生しない限り、安定性を維持しているため、擁壁パネル５が降下することも、厚さ方向に移動することは原則として起こらない。従って平常時には擁壁パネル５下端部の凸部５８は受け材２４の上面、または受け部２４ａの上面と側面とは非接触状態に保たれるか、接触しても互いに圧縮力を伝達しない状態に保たれる。 In addition, when the retaining wall panel 5 is supported by the marking block 4, it maintains its stability unless an extraordinary situation such as an earthquake occurs. As a general rule, movement in the opposite direction does not occur. Therefore, under normal conditions, the convex portion 58 at the lower end of the retaining wall panel 5 is kept in a non-contact state with the upper surface of the receiving member 24 or the upper surface and the side surface of the receiving portion 24a, or even if they contact each other, the compressive force is not transmitted to each other. kept in

図３は長さ方向に３枚、配列した図１－（ａ）に示す擁壁パネル５が複数本の補助支持装置１に支持可能な状態にあるときの様子を示す。長さ方向に隣接する２枚の擁壁パネル５、５は両者間に跨る連結部材８が双方に接合されることで、隣接する擁壁パネル５、５の幅方向（高さ方向）の位置が統一され、長さ方向に整然と配列する。ここでは１枚の擁壁パネル５を長さ方向両側寄りと中央部を除いた２箇所に配置された補助支持装置１、１に支持可能な状態にしているが、補助支持装置１の配置位置と配置数は問われない。 FIG. 3 shows a state in which three retaining wall panels 5 arranged in the longitudinal direction and shown in FIG. Two retaining wall panels 5, 5 adjacent to each other in the length direction are joined to each other with a connecting member 8 that spans between them, so that the positions of the adjacent retaining wall panels 5, 5 in the width direction (height direction) are unified and orderly arranged in the length direction. Here, one retaining wall panel 5 is in a state in which it can be supported by the auxiliary supporting devices 1, 1 arranged at two locations excluding the longitudinal both sides and the central portion. And the number of placement is not asked.

連結部材８は支持面１１上での作業性より、擁壁パネル５の下方寄りの部分に配置される。連結部材８は例えば図３に示すように擁壁パネル５の下端部（下方側）の凸部５８の表面に重なり、後述する調整部材９と同様、図７に示すように凸部５８に埋設されているインサート５４に螺入等するボルト８１等により擁壁パネル５に接合される。 The connecting member 8 is arranged at a lower portion of the retaining wall panel 5 for ease of work on the support surface 11 . For example, as shown in FIG. 3, the connecting member 8 overlaps the surface of the convex portion 58 at the lower end (lower side) of the retaining wall panel 5, and is embedded in the convex portion 58 as shown in FIG. It is joined to the retaining wall panel 5 by means of bolts 81 or the like that are screwed into the inserts 54 provided therein.

連結部材８による隣接する擁壁パネル５、５の連結時には、各擁壁パネル５の、連結部材８と重複しない位置に接続され、法面１０に固定される調整部材９を用いて擁壁パネル５の下端部の位置が調整される。この調整により、各擁壁パネル５の法面１０に対する高さが調整され、隣接する擁壁パネル５、５の幅方向の位置が統一される。 When the adjacent retaining wall panels 5, 5 are connected by the connecting member 8, the retaining wall panels 5 are connected to each retaining wall panel 5 at a position that does not overlap with the connecting member 8, and are fixed to the slope 10 using the adjusting member 9. The position of the lower end of 5 is adjusted. By this adjustment, the height of each retaining wall panel 5 with respect to the slope 10 is adjusted, and the positions of the adjacent retaining wall panels 5, 5 in the width direction are unified.

調整部材９は上記のように擁壁パネル５の下端部の凸部５８の表面に重なり、インサート５４に螺入等するボルト８１等により接合される。調整部材９には擁壁パネル５の設置角度を調整し、擁壁パネル５の下端部の高さを調整する引寄せ装置９１を接続するための被吊り具（アイボルト）９ａが接続される。 The adjustment member 9 overlaps the surface of the protrusion 58 at the lower end of the retaining wall panel 5 as described above, and is joined to the insert 54 by a bolt 81 or the like that is screwed into the insert 54 . The adjusting member 9 is connected with a suspender (eyebolt) 9a for connecting a pulling device 91 that adjusts the installation angle of the retaining wall panel 5 and adjusts the height of the lower end of the retaining wall panel 5 .

引寄せ装置９１は地山との間の引張力を直接、利用して擁壁パネル５の下端部を法面１０側へ引き寄せるか、または引張力を反力として利用して擁壁パネル５の下端部を法面１０側へ押し込む働きをする。引張力の反力を取る地山にはアンカーピン等の定着具４３が定着される。引張力を利用する場合の引寄せ装置９１としては図７に示すようなレバーブロック（登録商標）の使用が適する。 The attracting device 91 directly utilizes the tensile force between the ground and pulls the lower end portion of the retaining wall panel 5 toward the slope 10 side, or utilizes the tensile force as a reaction force to pull the retaining wall panel 5. It functions to push the lower end portion toward the slope 10 side. A fixing member 43 such as an anchor pin is fixed to the natural ground that takes the reaction force of the tensile force. A lever block (registered trademark) as shown in FIG. 7 is suitable for the attracting device 91 when using a tensile force.

レバーブロック（登録商標）の場合、チェーン９１ａの一端に接続されたフック９１ｂが被吊り具９ａに接続され、他端に接続されたフック９１ｃが定着具４３に接続された状態で、レバー９１ｄを往復動させることで、チェーン９１ａに張力が付与される。チェーン９１ａへの張力導入に伴い、フック９１ｂ、９１ｃ間距離が短縮されて擁壁パネル５の下端部が法面１０に接近し、擁壁パネル５の設置角度が調整され、同時に下端部の高さが調整される。 In the case of the lever block (registered trademark), the hook 91b connected to one end of the chain 91a is connected to the hanging member 9a, and the hook 91c connected to the other end is connected to the fixture 43, and then the lever 91d is pushed. Tension is applied to the chain 91a by reciprocating. As tension is introduced to the chain 91a, the distance between the hooks 91b and 91c is shortened, the lower end of the retaining wall panel 5 approaches the slope 10, and the installation angle of the retaining wall panel 5 is adjusted. is adjusted.

以下、墨出しブロック４と擁壁パネル５の具体的な構造を説明する。墨出しブロック４の表面側の下方側には図４、図５に示すように表面側が凸となった、擁壁パネル５を擁壁パネル５の設置時に仮受け（仮支持）するための凸部４１が形成される。墨出しブロック４は擁壁６を構成する擁壁パネル５に先行して法面１０に設置され、固定されるため、墨出しブロック４の背面側からは地山中に挿入される定着具（アンカー）４３が突設される。図５－（ａ）は図４－（ａ）に示す墨出しブロック４の表面をやや斜め上方から見た様子を、図５－（ｂ）は背面をやや斜め上方から見た様子を示す。 Specific structures of the marking block 4 and the retaining wall panel 5 will be described below. As shown in FIGS. 4 and 5, on the lower side of the surface side of the marking block 4, there is a projection for temporarily receiving (temporarily supporting) the retaining wall panel 5 when the retaining wall panel 5 is installed. A portion 41 is formed. Since the marking block 4 is installed and fixed on the slope 10 prior to the retaining wall panel 5 constituting the retaining wall 6, a fixing tool (anchor) inserted into the ground from the back side of the marking block 4 is installed. ) 43 are projected. FIG. 5-(a) shows the surface of the marking block 4 shown in FIG. 4-(a) as seen from a slightly oblique upper side, and FIG. 5-(b) shows a rear side as seen from a slightly oblique upper side.

墨出しブロック４の表面側に凸部４１が形成されることで、凸部４１の上方には相対的に表面側が凹となった凹部４２が形成される。墨出しブロック４を軸方向に見たときの縦断面上、凸部４１と凹部４２は図４－（ｂ）に示すように後述の擁壁パネル５の凸部５２が墨出しブロック４の凸部４１に下向きに係合したときに、凸部５２が凹部４２に、後述の擁壁パネル５の凹部５１が凸部４１に擁壁パネル５の厚さ方向に嵌合するような形状に形成される。 By forming the convex portion 41 on the surface side of the marking block 4 , a concave portion 42 whose surface side is relatively concave is formed above the convex portion 41 . On the vertical cross section of the marking block 4 when viewed in the axial direction, the convex portion 41 and the concave portion 42 are arranged such that the convex portion 52 of the retaining wall panel 5 described later is the convex portion of the marking block 4 as shown in FIG. 4-(b). When engaged downward with the portion 41, the protrusions 52 are fitted into the recesses 42, and the recesses 51 of the retaining wall panel 5, which will be described later, are fitted into the protrusions 41 in the thickness direction of the retaining wall panel 5. be done.

定着具４３は例えば墨出しブロック４を後述のように揚重機１３から吊り下げたまま法面１０に対して位置決めした後に、墨出しブロック４の表面側から地中に打ち込まれる。定着具４３の接続位置には、例えば図４－（ａ）、図５－（ａ）に示すように墨出しブロック４を厚さ方向に貫通する貫通孔４４が形成され、定着具４３は墨出しブロック４の表面側から貫通孔４４に打ち込まれ、地中に挿入される。 For example, the fixing tool 43 is driven into the ground from the surface side of the marking block 4 after positioning it with respect to the slope 10 while the marking block 4 is suspended from the lifting machine 13 as described later. At the connection position of the fixing member 43, a through hole 44 is formed through the marking block 4 in the thickness direction as shown in FIGS. The extension block 4 is driven into the through hole 44 from the surface side and inserted into the ground.

図７では墨出しブロック４の貫通孔４４の凹部４２側に、定着具４３がアンカーピンのように、貫通孔４４を貫通して地中に打ち込まれる定着部分と、定着部分に連続して屈曲し、墨出しブロック４に法面１０側へ係止する係止部分を有するＬ字形状をする場合に、係止部分が入り込み、墨出しブロック４に係止する縦溝４６を形成している。この場合、定着具４３の係止部分は定着部分が地中に打ち込まれるに従い、縦溝４６に法面１０（地山）側へ係止することで、墨出しブロック４を法面１０に押し付け、背面を法面に密着させる働きをする。 In FIG. 7, a fixing part 43 like an anchor pin penetrates through the through hole 44 of the marking block 4 and is driven into the ground on the side of the concave part 42 of the through hole 44. However, when the marking block 4 has an L-shape having a locking portion that locks onto the slope 10 side, the locking portion enters to form a longitudinal groove 46 that locks the marking block 4 . . In this case, as the anchoring portion of the fixing member 43 is driven into the ground, the marking block 4 is pressed against the slope 10 by engaging the longitudinal groove 46 toward the slope 10 (ground) side. , to bring the back side into close contact with the slope.

図６－（ｂ）に示すように擁壁パネル５の背面側の上方側（上方寄り）の、墨出しブロック４の凸部４１に対応した位置には、背面側が凹となった凹部５１が形成され、この凹部５１の上に背面側が凸となり、墨出しブロック４の凹部４２に重なる凸部５２が形成される。 As shown in FIG. 6-(b), on the upper side (closer to the upper side) of the back side of the retaining wall panel 5, at a position corresponding to the convex portion 41 of the marking block 4, there is a concave portion 51 whose back side is concave. A convex portion 52 is formed on the concave portion 51 so that the rear surface side is convex and overlaps with the concave portion 42 of the marking block 4 .

擁壁パネル５の上方側の背面側は墨出しブロック４の表面側に対向して組み合わせられる、あるいは厚さ方向に重ね合わせられる。このとき、擁壁パネル５の凸部５２が墨出しブロック４の凸部４１に下方側へ係合することにより擁壁パネル５が墨出しブロック４に支持される。擁壁パネル５の凸部５２は墨出しブロック４の凹部４２に厚さ方向に嵌合し、墨出しブロック４の凸部４１は擁壁パネル５の凹部５１に厚さ方向に嵌合する。 The rear side of the upper side of the retaining wall panel 5 is combined with the surface side of the marking block 4 so as to face it, or overlapped in the thickness direction. At this time, the retaining wall panel 5 is supported by the marking block 4 by engaging the convex portion 52 of the retaining wall panel 5 with the convex portion 41 of the marking block 4 downward. The projecting portion 52 of the retaining wall panel 5 fits into the recessed portion 42 of the marking block 4 in the thickness direction, and the projecting portion 41 of the marking block 4 fits into the recessed portion 51 of the retaining wall panel 5 in the thickness direction.

図８－（ｃ）に示すように擁壁パネル５が墨出しブロック４に重なったときの、図４－（ａ）に示す墨出しブロック４の擁壁パネル５との接続用のインサート４５に対応した位置には、図６－（ａ）、図７に示すようにボルト８１等が挿入、または螺入するための連結用孔５３が擁壁パネル５の表面側から形成される。擁壁パネル５の表面側からは、図６－（ａ）、図９－（ｄ）に示すように擁壁パネル５自身が吊り支持されるためのアイボルト等の被吊り具５Ｂが接続されるためのインサート５４が埋設される。 When the retaining wall panel 5 overlaps the marking block 4 as shown in FIG. 8-(c), the insert 45 for connecting the marking block 4 to the retaining wall panel 5 shown in FIG. 4-(a) At corresponding positions, connection holes 53 for inserting or screwing bolts 81 and the like are formed from the surface side of the retaining wall panel 5 as shown in FIGS. 6-(a) and 7 . From the surface side of the retaining wall panel 5, as shown in FIGS. 6-(a) and 9-(d), a suspension member 5B such as an eyebolt for suspending and supporting the retaining wall panel 5 itself is connected. An insert 54 for is embedded.

擁壁パネル３を表面側から、または背面側から見たときの立面上の中心部の１箇所、または幅方向の中心線付近の複数箇所には、図６～図８に示すように地山中に埋設され、定着される補強材７が擁壁パネル５を厚さ方向に貫通するための挿通孔５５が形成される。補強材７の、擁壁パネル５の表面から突出する頭部は擁壁パネル５表面の、挿通孔５５の周囲に固定された図３に示す定着板５Ｃに定着される。 When the retaining wall panel 3 is viewed from the front side or the back side, the ground is installed at one point in the center of the vertical surface or at multiple points near the center line in the width direction, as shown in FIGS. 6 to 8. An insertion hole 55 is formed for the reinforcing member 7 embedded and fixed in the mountain to pass through the retaining wall panel 5 in the thickness direction. The head portion of the reinforcing member 7 protruding from the surface of the retaining wall panel 5 is fixed to the fixing plate 5C shown in FIG.

擁壁パネル５にはまた、図６、図７に示すように地山中に存在する雨水等の滞水を排出するための水抜き孔５６が背面から表面まで貫通して形成される。水抜き孔５６には、擁壁パネル５の設置状態で水抜き孔５６の底になる部分が、擁壁パネル５の背面側から表面側へかけて水平に対して下向きに傾斜するような傾斜が付けられる。この他、擁壁パネル５には擁壁パネル５の表面側から背面と法面１０との間の空隙中へ充填材７１を充填（注入）するための注入孔５９が擁壁パネル５を厚さ方向に貫通して形成される。 As shown in FIGS. 6 and 7, the retaining wall panel 5 is also formed with drain holes 56 penetrating from the back surface to the front surface for draining stagnant water such as rainwater existing in the ground. In the drain hole 56, the bottom portion of the drain hole 56 in the installed state of the retaining wall panel 5 is inclined downward from the horizontal from the back side to the front side of the retaining wall panel 5. is attached. In addition, the retaining wall panel 5 has an injection hole 59 for filling (injecting) the filler 71 into the gap between the back surface of the retaining wall panel 5 and the slope 10 from the surface side of the retaining wall panel 5. It is formed penetrating in the vertical direction.

以下、図８、図９に基づき、法面１０に沿った高さ方向に擁壁パネル５が２段、配列する場合の擁壁６を構築する施工手順例を説明する。以下の施工手順は並行する場合も前後する場合もある。 Hereinafter, based on FIG. 8 and FIG. 9, a construction procedure example for constructing the retaining wall 6 in the case where the retaining wall panels 5 are arranged in two stages in the height direction along the slope 10 will be described. The following construction procedures may be performed in parallel or in sequence.

図８－（ａ）に示すように地山を掘削し、構築すべき擁壁６、あるいは設置すべき擁壁パネル５の傾斜角度に応じた角度の法面１０を形成する。法面１０は少なくとも１段（１枚）の擁壁パネル５の高さ分に、補助支持装置１の設置分を加えた深さ、形成される。その後、（ｂ）に示すように法面１０の最上部（上部）に、軸方向を水平方向等、法面１０の上部に沿った方向に向けて墨出しブロック４を設置する。このとき、予め背面側に一体化して背面から突出している、または設置後に突出する定着具４３を地山中に挿入し、固定する。 As shown in FIG. 8-(a), the natural ground is excavated to form a slope 10 having an angle corresponding to the inclination angle of the retaining wall 6 to be constructed or the retaining wall panel 5 to be installed. The slope 10 is formed with a depth equal to the height of at least one stage (one sheet) of the retaining wall panel 5 plus the amount of installation of the auxiliary support device 1 . After that, as shown in (b), the marking block 4 is installed on the top (upper part) of the slope 10 with its axial direction directed along the upper part of the slope 10, such as the horizontal direction. At this time, the fixing member 43, which is integrated with the rear surface side in advance and protrudes from the rear surface, or protrudes after installation, is inserted into the ground and fixed.

墨出しブロック４の揚重機１３による吊り込みは図８－（ｂ）に示すように墨出しブロック４の上面側のインサート４５に接続された被吊り具４Ａを揚重機１３のワイヤから吊り下げることにより行われる。墨出しブロック４の軸方向に複数本の墨出しブロック４を配列させる場合には、図１０に示すようにこの時点で全墨出しブロック４が法面１０に設置され、固定される。被吊り具４Ａは墨出しブロック４の設置後に外される。 The marking block 4 is suspended by the lifting machine 13 by suspending the suspended member 4A connected to the insert 45 on the upper surface side of the marking block 4 from the wire of the lifting machine 13 as shown in FIG. 8-(b). performed by When a plurality of marking blocks 4 are arranged in the axial direction of the marking blocks 4, all the marking blocks 4 are installed and fixed on the slope 10 at this point as shown in FIG. The suspension member 4A is removed after the marking block 4 is installed.

墨出しブロック４の設置後、図８－（ｃ）、図１０－（ａ）に示すように被吊り具５Ｂが接続された擁壁パネル５を墨出しブロック４の表面側へ吊り込み、墨出しブロック４の凸部４１に擁壁パネル５の上方側の凸部５２を下方側へ係合させて擁壁パネル５を墨出しブロック４に支持させる。このとき、図７に示すように擁壁パネル５の連結用孔５３はそれに対応する、墨出しブロック４表面側のインサート４５に合致させられる。 After the marking block 4 is installed, as shown in FIGS. The retaining wall panel 5 is supported by the marking block 4 by engaging the projecting portion 52 on the upper side of the retaining wall panel 5 with the projecting portion 41 of the extension block 4 downward. At this time, as shown in FIG. 7, the connection hole 53 of the retaining wall panel 5 is matched with the corresponding insert 45 on the surface side of the marking block 4 .

連結用孔５３からはボルト８１等が墨出しブロック４のインサート４５に螺入等させられ、擁壁パネル５が墨出しブロック４に接合される。図８－（ｂ）、または（ｃ）の時点で図１、図２に示す補助支持装置１が支持面１１上に設置される。図８－（ｃ）の状況を図１０－（ａ）に示す。 A bolt 81 or the like is screwed into the insert 45 of the marking block 4 from the connecting hole 53 , and the retaining wall panel 5 is joined to the marking block 4 . 8-(b) or (c), the auxiliary support device 1 shown in FIGS. 1 and 2 is installed on the support surface 11. As shown in FIG. The situation of FIG. 8-(c) is shown in FIG. 10-(a).

その後、図８－（ｄ）に示すように擁壁パネル５の挿通孔５５を通じ、例えば二重管のケーシングパイプ等の削孔器具を用いて挿通孔５５を挿通する補強材７を挿入するための削孔１２が形成される。削孔１２内への補強材７の挿入後、もしくは挿入前、または同時に削孔１２内にモルタル等のグラウト材が充填され、グラウト材の硬化によって補強材７が削孔１２内（グラウト材中）に定着される。 After that, as shown in FIG. 8-(d), through the insertion hole 55 of the retaining wall panel 5, the reinforcing member 7 is inserted through the insertion hole 55 using a drilling tool such as a double-pipe casing pipe. of drilling holes 12 are formed. After or before inserting the reinforcing material 7 into the drilled hole 12, or at the same time, the drilled hole 12 is filled with a grout material such as mortar, and the reinforcing material 7 moves into the drilled hole 12 (during the grouting process) due to hardening of the grout material. ).

補強材７の軸方向先端部は削孔１２中へのグラウト材の注入等により削孔１２内で定着され、補強材７に軸方向に引張力を与えられた状態で、後述のように擁壁パネル５の表面に突出する頭部が擁壁パネル５の表面に定着されることで、地山に圧縮力を加え、擁壁パネル５を法面１０に密着させた状態に保つ。 The tip portion of the reinforcing member 7 in the axial direction is fixed in the drilled hole 12 by injecting grout material into the drilled hole 12 or the like. A head portion protruding from the surface of the wall panel 5 is fixed to the surface of the retaining wall panel 5, thereby applying compressive force to the ground and keeping the retaining wall panel 5 in close contact with the slope 10.例文帳に追加

擁壁パネル５を墨出しブロック４に支持させた時点で、または墨出しブロック４に接合した時点で１段分の擁壁パネル５の設置が完了するが、擁壁パネル５の設置状態での安定性を確保する目的で、図９－（ａ）に示すように前記の擁壁パネル５の注入孔５９を通じて擁壁パネル５の背面と法面１０との間の空隙に充填材７１が充填（注入）され、擁壁パネル５が法面１０に固定される。 When the retaining wall panel 5 is supported by the marking block 4 or joined to the marking block 4, the installation of the retaining wall panel 5 for one stage is completed. For the purpose of ensuring stability, a filling material 71 is filled into the gap between the back surface of the retaining wall panel 5 and the slope 10 through the injection hole 59 of the retaining wall panel 5 as shown in FIG. 9-(a). (injected), and the retaining wall panel 5 is fixed to the slope 10 .

このとき、挿通孔５５からの充填材７１の漏れ出しを防止するために、挿通孔５５には弾性変形可能な閉塞材５Ｄが擁壁パネル５の表面側から暫定的に挿入される。閉塞材５Ｄは充填材７１の充填後に回収される。擁壁パネル５が法面１０に固定された時点で補助支持装置１は１段目の支持面１１から回収され、新たに下段側に形成される支持面１１上に、下段側の擁壁パネル５の設置前、または設置後に設置される。図９－（ａ）の状況を図１０－（ｂ）に示す。 At this time, in order to prevent the filling material 71 from leaking out from the insertion hole 55, an elastically deformable closing member 5D is temporarily inserted into the insertion hole 55 from the surface side of the retaining wall panel 5. As shown in FIG. The clogging material 5D is recovered after the filling material 71 is filled. When the retaining wall panel 5 is fixed to the slope 10, the auxiliary supporting device 1 is withdrawn from the first supporting surface 11, and is placed on the supporting surface 11 newly formed on the lower side. 5 before or after installation. The situation of FIG. 9-(a) is shown in FIG. 10-(b).

充填材７１は補強材７が挿入された削孔１２内に充填されるグラウト材と実質的に同一材料である。擁壁パネル５の背面には図６、図７に示すように充填材７１の充填領域を区画し、充填領域からの充填材７１の漏れ（充填材７１の無秩序な流出）を阻止するための止液材（シール材）５Ａが固定されているため、削孔１２内へのグラウト材の充填時に充填材としてのグラウト材を削孔１２内から溢れ（流出）させて擁壁パネル５の背面側へ回り込ませることもある。その場合、図９－（ａ）に示す工程は省略される。 The filler material 71 is substantially the same material as the grout material that fills the drilled hole 12 into which the reinforcing material 7 is inserted. As shown in FIGS. 6 and 7, on the back surface of the retaining wall panel 5, a filling area for the filler 71 is defined, and a wall for preventing leakage of the filler 71 from the filling area (chaotic outflow of the filler 71) is provided. Since the liquid stop material (sealing material) 5A is fixed, the grout material as a filling material overflows (flows out) from the drilled hole 12 when the grout material is filled into the drilled hole 12, and the back surface of the retaining wall panel 5 It can also be turned to the side. In that case, the step shown in FIG. 9-(a) is omitted.

擁壁パネル５の法面１０への固定後、図９－（ｂ）に示すように挿通孔５５を貫通し、擁壁パネル５の表面側へ突出する補強材７の頭部が挿通孔５５の周囲に設置された、図３に示す定着板５Ｃ等にナット等を用いて定着させられる。擁壁６が墨出しブロック４と１段の擁壁パネル５のみから構成される場合には、図９－（ｂ）の作業が終了した時点で施工（擁壁６の構築作業）は終了する。 After fixing the retaining wall panel 5 to the slope 10, as shown in FIG. It is fixed to a fixing plate 5C or the like shown in FIG. If the retaining wall 6 is composed only of the marking block 4 and the one-stage retaining wall panel 5, the construction (construction work of the retaining wall 6) ends when the work in FIG. 9-(b) is completed. .

図９－（ｄ）に示す擁壁パネル５の下段側に擁壁パネル５を配列させる場合には、図９－（ｃ）に示すように最上段の擁壁パネル５の下方の地山が掘削され、その下段側の擁壁パネル５を設置するための法面１０と支持面１１が形成される。この場合、前記のように図９－（ｄ）に示すように擁壁パネル５表面側の下方側の、擁壁パネル５の上方側の凸部５２に対応した位置に凹部５７が形成され、凹部５７の下に凹部５１に対応した凸部５８が形成される。 When the retaining wall panels 5 are arranged on the lower side of the retaining wall panel 5 shown in FIG. 9-(d), the ground below the top retaining wall panel 5 is A slope surface 10 and a support surface 11 for installing the retaining wall panel 5 on the lower stage side are formed by excavation. In this case, as described above, as shown in FIG. 9-(d), recesses 57 are formed on the lower side of the surface of the retaining wall panel 5 at positions corresponding to the protrusions 52 on the upper side of the retaining wall panel 5, A convex portion 58 corresponding to the concave portion 51 is formed under the concave portion 57 .

下段側の擁壁パネル５設置用の法面１０の形成後、図９－（ｄ）に示すように下段側の擁壁パネル５の上方側の背面が上段側の擁壁パネル５の下方側の表面に対向して組み合わせられる。下段側の擁壁パネル５の上方側の凸部５２は上段側の擁壁パネル５の下方側の凹部５７に嵌合等しながら凸部５８に下方側へ係合し、下段側の擁壁パネル５が上段側の擁壁パネル５に支持される。 After forming the slope 10 for installing the lower retaining wall panel 5, as shown in FIG. is assembled facing the surface of the The convex portion 52 on the upper side of the lower retaining wall panel 5 engages with the convex portion 58 downward while fitting into the concave portion 57 on the lower side of the retaining wall panel 5 on the upper side, thereby A panel 5 is supported by the retaining wall panel 5 on the upper stage side.

その後、下段側の擁壁パネル５の補強材７による法面１０への固定、下段側の擁壁パネル５の背面側への充填材７の充填、下段側の擁壁パネル５を挿通した補強材４の頭部の擁壁パネル５への定着の作業が終了した時点で、２段の擁壁パネル５、５からなる擁壁６の構築が終了する。擁壁パネル５が３段以上、配列する場合には更に図９－（ｄ）以下の作業が繰り返される。 After that, the lower retaining wall panel 5 is fixed to the slope 10 by the reinforcing material 7, the filling material 7 is filled in the back side of the lower retaining wall panel 5, and the lower retaining wall panel 5 is inserted for reinforcement. When the work of fixing the head of the timber 4 to the retaining wall panel 5 is completed, the construction of the retaining wall 6 consisting of the two-stage retaining wall panels 5, 5 is completed. When the retaining wall panels 5 are arranged in three stages or more, the work shown in FIG. 9-(d) is repeated.

１……補助支持装置、
２……支柱、
２１……被吊り材、２１ａ……連結部、
２２……吊り材、２２ａ……連結部、２２ｂ……固定部、
２３……連結材、２３ａ……連結部、２３ｂ……連結部、
２４……受け材、２４ａ……受け部、
３……昇降装置、３１……軸材、３２……ナット、３３……ハンドル、３４……ベースプレート、
４……墨出しブロック、４１……凸部、４２……凹部、４３……定着具、４４……貫通孔、４５……インサート、４６……縦溝、４Ａ……被吊り具、
５……擁壁パネル、５１……（上方側の）凹部、５２……（上方側の）凸部、５３……連結用孔、５４……インサート、５５……挿通孔、５６……水抜き孔、５７……（下方側の）凹部、５８……（下方側の）凸部、５９……注入孔、
５Ａ……止液材、５Ｂ……被吊り具、５Ｃ……定着板、５Ｄ……閉塞材、
６……法面安定化擁壁、
７……補強材、７１……充填材、
８……連結部材、８１……ボルト、
９……調整部材、９ａ……被吊り具、
９１……引寄せ装置、９１ａ……チェーン、９１ｂ……フック、９１ｃ……フック、９１ｄ……レバー、
１０……法面、
１１……支持面、
１２……削孔、
１３……揚重機。 1 …… Auxiliary support device,
2 ... pillars,
21 ... suspended material, 21a ... connection part,
22... Hanging member, 22a... Connecting part, 22b... Fixed part,
23...connecting member, 23a...connecting part, 23b...connecting part,
24... Receiving material, 24a... Receiving part,
3 Lifting device, 31 Shaft, 32 Nut, 33 Handle, 34 Base plate,
4 Marking block 41 Convex portion 42 Concave portion 43 Fixing tool 44 Through hole 45 Insert 46 Vertical groove 4A Hanging tool
5... Retaining wall panel, 51... (upper side) concave part, 52... (upper side) convex part, 53... connection hole, 54... insert, 55... insertion hole, 56... water Vent hole 57 (lower side) concave portion 58 (lower side) convex portion 59 injection hole
5A... Liquid-stopping material, 5B... Hanging tool, 5C... Fixing plate, 5D... Closing material,
6……Slope stabilization retaining wall,
7 Reinforcing material, 71 Filling material,
8 ... connecting member, 81 ... bolt,
9 ...... adjustment member, 9a ...... suspending tool,
91... attracting device, 91a... chain, 91b... hook, 91c... hook, 91d... lever,
10……Slope,
11 ... support surface,
12 ...... Drilling,
13 …… Lifting machine.

Claims (3)

法面の上部に、軸方向を前記法面の上部に沿った方向に向けて配置され、背面側から地山側へ突出する定着具が地山中に埋設されて前記法面に固定される墨出しブロックと、この墨出しブロックの下方に配置されて前記墨出しブロックに支持されながら、地山中に定着される補強材が貫通し、この補強材の前記法面から突出する頭部が定着される擁壁パネルとを備える法面安定化擁壁において、
前記擁壁パネルの下方寄りに対応した位置、またはその付近の地山に形成された支持面上に設置され、前記補強材の地中への定着が完了するまでの間、前記墨出しブロックに支持された状態にある前記擁壁パネルを補助的に支持する補助支持装置であり、
前記支持面上に支持されて前記擁壁パネルを直接、もしくは間接的に支持可能に、前記擁壁パネルに組み合わせられ、前記擁壁パネルの荷重を負担可能な支柱を持ち、
前記支柱は平常時に前記擁壁パネルの荷重を負担せず、前記擁壁パネルが前記墨出しブロックに支持されなくなったときに、前記擁壁パネルへの支持部分で前記擁壁パネルを支持し、前記墨出しブロックに代わって前記擁壁パネルの荷重を負担することを特徴とする擁壁パネルの補助支持装置。 A marking that is arranged on the upper part of the slope with its axial direction directed in the direction along the upper part of the slope, and in which a fixing tool that protrudes from the back side to the ground side is embedded in the ground and fixed to the slope. A block and a reinforcing member which is arranged below the marking block and is supported by the marking block penetrates and is fixed in the ground, and the head of the reinforcing member projecting from the slope surface is fixed. A slope-stabilizing retaining wall comprising a retaining wall panel,
It is installed on a support surface formed in the ground at a position corresponding to the lower part of the retaining wall panel or in the vicinity thereof, and until the reinforcing material is completely fixed to the ground, the marking block An auxiliary support device for auxiliary supporting the retaining wall panel in a supported state,
having a strut supported on the support surface and capable of directly or indirectly supporting the retaining wall panel and capable of bearing the load of the retaining wall panel;
The support does not bear the load of the retaining wall panel in normal times, and when the retaining wall panel is no longer supported by the marking block, the supporting portion of the retaining wall panel supports the retaining wall panel, An auxiliary support device for a retaining wall panel, which bears the load of the retaining wall panel in place of the marking block. 前記擁壁パネルの下方寄りの位置に、前記擁壁パネルの荷重を負担可能な連結部を有する被吊り材が接続され、前記支柱の前記被吊り材に対応した位置に、前記擁壁パネルの荷重を負担可能な連結部を有し、前記被吊り材の前記連結部に直接、もしくは間接的に連結される吊り材が接続され、
前記吊り材と前記被吊り材とは、平常時に前記被吊り材からの前記擁壁パネルの荷重が前記吊り材に伝達されず、前記擁壁パネルが前記墨出しブロックに支持されなくなったときに、前記被吊り材からの前記擁壁パネルの荷重が前記吊り材に伝達される状態に連結されていることを特徴とする請求項１に記載の擁壁パネルの補助支持装置。 Suspended members having connecting portions capable of bearing the load of the retaining wall panel are connected to positions near the bottom of the retaining wall panel, and the retaining wall panel is provided at positions corresponding to the suspended members of the struts. A suspension member having a connection portion capable of bearing a load and directly or indirectly connected to the connection portion of the suspension member is connected,
When the load of the retaining wall panel from the suspended member is not transmitted to the hanging member and the retaining wall panel is no longer supported by the marked block 2. An auxiliary supporting device for a retaining wall panel according to claim 1, wherein said retaining wall panel is connected in such a manner that a load of said retaining wall panel from said hanging member is transmitted to said hanging member. 前記支柱が前記擁壁パネルを支持したときに、前記擁壁パネルとの連結部分を、前記擁壁パネルを支持する前の位置に復帰させる昇降装置が前記支柱に内蔵、もしくは付属していることを特徴とする請求項１、もしくは請求項２に記載の擁壁パネルの補助支持装置。 When the support supports the retaining wall panel, the supporting support has a built-in or attached elevating device that returns the connecting portion with the retaining wall panel to the position before supporting the retaining wall panel. The auxiliary support device for retaining wall panels according to claim 1 or 2, characterized by:
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002054159A (en) 2000-08-09 2002-02-20 Landes Kk Retaining wall construction method making use of block
JP2003232047A (en) 2002-02-06 2003-08-19 Landes Co Ltd Earth retaining wall construction method and earth retaining wall block using the same
KR102019193B1 (en) 2018-06-05 2019-09-06 지반이엔씨 주식회사 Construction method of reinforced soil retaining wall
JP2021055519A (en) 2019-10-01 2021-04-08 株式会社エスイー Slope face stabilization retaining wall and its construction method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002054159A (en) 2000-08-09 2002-02-20 Landes Kk Retaining wall construction method making use of block
JP2003232047A (en) 2002-02-06 2003-08-19 Landes Co Ltd Earth retaining wall construction method and earth retaining wall block using the same
KR102019193B1 (en) 2018-06-05 2019-09-06 지반이엔씨 주식회사 Construction method of reinforced soil retaining wall
JP2021055519A (en) 2019-10-01 2021-04-08 株式会社エスイー Slope face stabilization retaining wall and its construction method

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