JP2018062744A - Structure with composite underground wall and construction method for constructing structure with composite underground wall - Google Patents

Structure with composite underground wall and construction method for constructing structure with composite underground wall Download PDF

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JP2018062744A
JP2018062744A JP2016200276A JP2016200276A JP2018062744A JP 2018062744 A JP2018062744 A JP 2018062744A JP 2016200276 A JP2016200276 A JP 2016200276A JP 2016200276 A JP2016200276 A JP 2016200276A JP 2018062744 A JP2018062744 A JP 2018062744A
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wall
pile
permanent
synthetic
shaped steel
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英之 眞野
Hideyuki Mano
英之 眞野
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Shimizu Construction Co Ltd
Shimizu Corp
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Shimizu Construction Co Ltd
Shimizu Corp
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Priority to JP2016200276A priority Critical patent/JP2018062744A/en
Priority to SG11201903020QA priority patent/SG11201903020QA/en
Priority to PCT/JP2017/036259 priority patent/WO2018070333A1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D13/00—Large underground chambers; Methods or apparatus for making them

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a structure with a composite underground wall and a construction method for constructing the structure provided with the composite underground wall to allow a pile length to be reasonably determined to ensure desired supporting force while the pile length is kept short as much as possible.SOLUTION: A structure with a composite underground wall comprises a permanent supporting pile including: core materials 1 and soil cement arranged at a section deeper than a floor space 4; and the core materials 1 implanted with permanent-pile-use studs 7, and the soil cement arranged at the composite wall section 5; wherein the permanent-pile-use studs 7 are implanted onto webs 1b of H beams or the core materials 1 located in a section below the flooring surface 4 arranged below a composite wall section 5 shallower than the flooring surface 4 where a retaining wall 2 and a reinforced-concrete wall 3 are integrally connected, as well as the permanent-pile-use studs 7 are implanted onto the webs 1b of the core materials 1 in the composite wall section 5.SELECTED DRAWING: Figure 1

Description

本発明は、山留壁と鉄筋コンクリート壁とを一体化してなる合成地下壁を備えた構造物及び合成地下壁を備えた構造物の施工方法に関する。   The present invention relates to a structure having a synthetic underground wall formed by integrating a mountain retaining wall and a reinforced concrete wall, and a construction method for a structure having a synthetic underground wall.

ソイルミキシングウォール（ＳＭＷ：ソイルセメント柱列壁）や横矢板工法等で使用されるＨ形鋼の芯材と建物の鉄筋コンクリート地下外壁（鉄筋コンクリート壁）をスタッドを用いて一体に接合して合成壁とするケースが増えている（例えば、特許文献１、特許文献２参照）。   H-shaped steel core material used in soil mixing wall (SMW: soil cement column wall), cross-sheet pile method, etc. and the reinforced concrete underground outer wall (reinforced concrete wall) of the building are joined together using studs to form a composite wall Increasing cases (see, for example, Patent Document 1 and Patent Document 2).

このように合成壁を構築することによって、従来仮設として扱われてきた芯材を本設構造の一部として活用することができ、地下外壁の厚さを低減できる。これにより、地下階の有効空間の拡大、仮設資材の有効活用、ひいてはコストダウンを実現することが可能になる。   By constructing the composite wall in this way, the core material that has been treated as a temporary structure can be used as a part of the main structure, and the thickness of the underground outer wall can be reduced. As a result, it is possible to expand the effective space of the basement floor, effectively use temporary materials, and thus reduce costs.

特許第４２５３７９５号公報Japanese Patent No. 4253895 特開２００７−０７０８０７号公報JP 2007-070807 A

ここで、従来、山留壁に用いるＳＭＷ等の芯材のＨ形鋼の床付け面以浅のフランジにスタッドを打ち、このフランジに植設したスタッド（合成壁用スタッド）を通じて芯材を本設の鉄筋コンクリート躯体と接合して合成壁としている。また、床付け面以深ではウェブにスタッドを打ち、この部分のソイルセメント／ソイルセメント柱列壁の強度を通常より大きくすることによって建物を支える杭（本設杭）としても利用できるようにしている。   Conventionally, a stud is hit on a flange shallower than the floor of the H-shaped steel core material such as SMW used for the mountain retaining wall, and the core material is installed through a stud (synthetic wall stud) planted on this flange. It is combined with a reinforced concrete frame to create a composite wall. In addition, it is possible to use it as a pile (main pile) that supports the building by hitting a stud on the web deeper than the flooring surface and making the strength of the soil cement / soil cement column wall of this part larger than usual. .

そして、この場合、杭の支持力は、一般に以下の２つのうち小さい方で決まる。
１）ソイルコラム／ソイルセメント柱列壁と地盤との周面摩擦及び先端支持力の和
２）芯材のＨ形鋼とソイルセメントとの境界面における表面すべり破壊 In this case, the supporting force of the pile is generally determined by the smaller of the following two.
1) Sum of peripheral friction and tip support force between soil column / soil cement column wall and ground 2) Surface slip failure at the interface between H-shaped steel and soil cement

一方、ソイルセメント柱列壁のソイルセメントは本設杭に用いられる部分でも一般に強度が１〜２Ｎ／ｍｍ２程度（通常のＳＭＷは０．５ＭＮ／ｍｍ２）と小さいことから、軟弱な地盤以外では、上記２）で杭の支持力が決まる場合が多い。すなわち、一般に、杭の支持力はＨ形鋼とソイルセメントの付着力で決まり、床付け以深の地盤が硬い場合であっても、所望の杭の支持力（設計支持力）を確保するために杭長を長くする必要があった。 On the other hand, soil cement of the soil cement column wall is generally about 1-2 N / mm 2 (normal SMW is 0.5 MN / mm 2 ), even in the part used for permanent piles. Then, the support force of the pile is often determined in the above 2). That is, in general, the support capacity of piles is determined by the adhesion of H-section steel and soil cement, and in order to ensure the desired support capacity (design support capacity) of piles even when the ground deeper than the floor is hard. It was necessary to lengthen the pile length.

上記事情に鑑み、本発明は、杭長を短く抑えつつ所望の支持力を確保することができ、合理的に杭長を設定することを可能にする合成地下壁を備えた構造物及び合成地下壁を備えた構造物の施工方法を提供することを目的とする。   In view of the above circumstances, the present invention can secure a desired supporting force while keeping the pile length short, and a structure having a synthetic underground wall that makes it possible to set the pile length reasonably and the synthetic underground It aims at providing the construction method of the structure provided with the wall.

上記の目的を達するために、この発明は以下の手段を提供している。   In order to achieve the above object, the present invention provides the following means.

本発明の合成地下壁を備えた構造物は、ソイルセメント柱列壁の内部にＨ形鋼の芯材を所定の間隔をあけて複数埋設してなる山留壁と、前記Ｈ形鋼のフランジに植設した合成壁用のスタッドを用いて床付け面より浅い部分の前記山留壁に本設の鉄筋コンクリート壁を一体に接合してなる合成地下壁を備えた構造物であって、前記山留壁と前記鉄筋コンクリート壁を一体にした床付け面より浅い部分の合成壁部よりも下方に配設された床付け面より深い部分の前記Ｈ形鋼のウェブに本設杭用のスタッドが植設され、且つ前記合成壁部の前記Ｈ形鋼のウェブに本設杭用のスタッドが植設され、床付け面より深い部分の芯材及びソイルセメントに加え、前記本設杭用のスタッドが植設された前記合成壁部の芯材及びソイルセメントを本設の支持杭として構成されていることを特徴とする。   A structure having a synthetic underground wall according to the present invention includes a mountain retaining wall in which a plurality of H-shaped steel cores are embedded at predetermined intervals inside a soil cement column wall, and a flange of the H-shaped steel. A structure comprising a synthetic underground wall formed by integrally joining a reinforced concrete wall of a main construction to the mountain retaining wall at a portion shallower than a flooring surface using a stud for a synthetic wall planted on the floor, Studs for permanent piles are planted on the H-shaped steel web in a portion deeper than the flooring surface disposed below the composite wall portion shallower than the flooring surface in which the retaining wall and the reinforced concrete wall are integrated. And a stud for a permanent pile is planted on the H-shaped steel web of the composite wall, and in addition to the core material and soil cement in a portion deeper than the flooring surface, the stud for the permanent pile is The core material and the soil cement of the synthetic wall part that has been planted are Characterized in that it is configured Te.

本発明の合成地下壁を備えた構造物の施工方法は、ソイルセメント柱列壁の内部にＨ形鋼の芯材を所定の間隔をあけて複数埋設してなる山留壁と、前記Ｈ形鋼のフランジに植設した合成壁用のスタッドを用いて床付け面より浅い部分の前記山留壁に本設の鉄筋コンクリート壁を一体に接合し、本設の合成地下壁を備えた構造物を構築する方法であって、前記山留壁と前記鉄筋コンクリート壁を一体にした床付け面より浅い部分の合成壁部よりも下方に配設される床付け面より深い部分の前記Ｈ形鋼のウェブに本設杭用のスタッドを植設するとともに、前記合成壁部の前記Ｈ形鋼のウェブに本設杭用のスタッドを植設しておき、該Ｈ形鋼を前記ソイルセメント柱列壁の内部に埋設するようにした。   The construction method for a structure having a synthetic underground wall according to the present invention includes a mountain retaining wall formed by embedding a plurality of H-shaped steel cores at predetermined intervals inside a soil cement column wall, and the H-shaped Using a synthetic wall stud planted on a steel flange, a main reinforced concrete wall is integrally joined to the mountain retaining wall shallower than the flooring surface, and a structure having a permanent synthetic underground wall is obtained. A method of construction, wherein the H-shaped steel web in a portion deeper than the flooring surface disposed below the composite wall portion of the portion shallower than the flooring surface in which the mountain retaining wall and the reinforced concrete wall are integrated. A stud for a permanent pile is planted in the stud, and a stud for a permanent pile is planted on the H-shaped steel web of the composite wall, and the H-shaped steel is attached to the soil cement column wall. Embedded inside.

本発明の合成地下壁を備えた構造物及び合成地下壁を備えた構造物の施工方法においては、合成壁部のＨ形鋼のウェブに本設杭用のスタッドが植設されていることにより、床付け面より深い部分の芯材及びソイルセメントだけでなく、合成壁部の芯材及びソイルセメントを本設の支持杭として扱うことができる。   In the construction method of the structure provided with the synthetic underground wall and the structure provided with the synthetic underground wall of the present invention, the stud for permanent pile is implanted in the H-shaped steel web of the synthetic wall portion. In addition to the core material and soil cement in the deeper part than the flooring surface, the core material and soil cement in the synthetic wall can be handled as the supporting piles.

これにより、本発明の合成地下壁を備えた構造物及び合成地下壁を備えた構造物の施工方法によれば、従来と比較し、床付け面以深の本設杭の杭長を短くできる。よって、合理的に合成地下壁を備えた構造物を構築することができ、施工性、経済性の向上を図ることが可能になる。   Thereby, according to the construction method of the structure provided with the synthetic underground wall of this invention and the structure provided with the synthetic underground wall, the pile length of the permanent pile deeper than a flooring surface can be shortened compared with the past. Therefore, a structure with a synthetic underground wall can be constructed reasonably, and it becomes possible to improve workability and economy.

本発明の一実施形態に係る合成地下壁を備えた構造物を示す図である。It is a figure which shows the structure provided with the synthetic underground wall which concerns on one Embodiment of this invention. 図１のＸ１−Ｘ１線矢視図であり、本発明の一実施形態に係る合成地下壁を備えた構造物の床付け面より浅い部分（本設杭部／合成壁部）を示す断面図である。It is X1-X1 arrow directional view of FIG. 1, and sectional drawing which shows a part (main construction pile part / composite wall part) shallower than the flooring surface of the structure provided with the synthetic underground wall which concerns on one Embodiment of this invention. It is. 図１のＸ２−Ｘ２線矢視図であり、本発明の一実施形態に係る合成地下壁を備えた構造物の床付け面より深い部分（本設杭部）を示す断面図である。It is X2-X2 arrow directional view of FIG. 1, and is sectional drawing which shows a part (mainly pile part) deeper than the flooring surface of the structure provided with the synthetic underground wall which concerns on one Embodiment of this invention. 本発明の一実施形態に係る合成地下壁を備えた構造物の変更例を示す図である。It is a figure which shows the example of a change of the structure provided with the synthetic underground wall which concerns on one Embodiment of this invention.

以下、図１から図４を参照し、本発明の一実施形態に係る合成地下壁を備えた構造物及び合成地下壁を備えた構造物の施工方法について説明する。   Hereinafter, with reference to FIGS. 1-4, the construction method of the structure provided with the synthetic underground wall which concerns on one Embodiment of this invention and the synthetic underground wall is demonstrated.

本実施形態の合成地下壁を備えた構造物Ａは、図１から図３に示すように、Ｈ形鋼を芯材１とするソイルミキシングウォールからなる山留壁２に沿って本設の鉄筋コンクリート壁３が配設され、本設構造物の床付け面４よりも浅い部分の山留壁２と鉄筋コンクリート壁３を一体に接合してなる本設の合成地下壁／合成壁部５を備えて構成されている。   As shown in FIGS. 1 to 3, the structure A having a synthetic underground wall according to the present embodiment is a reinforced concrete installed along a mountain retaining wall 2 made of a soil mixing wall having an H-shaped steel as a core material 1. A wall 3 is provided, and a synthetic basement wall / composite wall portion 5 is provided which is formed by integrally joining a mountain retaining wall 2 and a reinforced concrete wall 3 which are shallower than the flooring surface 4 of the permanent structure. It is configured.

また、山留壁２が鉄筋コンクリート壁３と接する側の芯材（Ｈ形鋼）１のフランジ１ａに溶接などによって合成壁用のスタッド（シアコネクタ）６が植設されている。また、この合成壁用のスタッド６は芯材１の延設方向に沿う鉛直方向に所定の間隔をあけて複数植設されている。そして、これら合成壁用のスタッド６を介して山留壁２の芯材１と本設の鉄筋コンクリート壁３が接合され、芯材１と鉄筋コンクリート壁３の間の応力を伝達するように構成されている。   A synthetic wall stud (shear connector) 6 is planted by welding or the like on the flange 1a of the core material (H-shaped steel) 1 on the side where the mountain retaining wall 2 is in contact with the reinforced concrete wall 3. Further, a plurality of studs 6 for the synthetic wall are planted at predetermined intervals in the vertical direction along the extending direction of the core material 1. And the core material 1 of the mountain retaining wall 2 and the reinforced concrete wall 3 of this installation are joined via these synthetic wall studs 6, and it is comprised so that the stress between the core material 1 and the reinforced concrete wall 3 may be transmitted. Yes.

さらに、合成壁部５よりも下方に配設された構造物Ａの床付け面４より深い部分の芯材（Ｈ形鋼）１のウェブ１ｂに、本設杭用のスタッド７が植設されている。   Further, a stud 7 for a permanent pile is planted on the web 1b of the core material (H-shaped steel) 1 in a portion deeper than the flooring surface 4 of the structure A disposed below the composite wall portion 5. ing.

なお、スタッド６、７としては、例えば頭付きスタッドやＴヘッドバースタッドなどの頭部に拡径部を備えたスタッドを用いればよい。   In addition, as the studs 6 and 7, for example, a stud provided with an enlarged diameter portion on the head such as a headed stud or a T head bar stud may be used.

一方、従来、山留壁２のソイルセメントの強度がそれほど大きくないため、合成壁部５の芯材１のＨ形鋼は合成地下壁／合成壁部５の構成要素として扱われ、Ｈ形鋼の芯材１とソイルセメントとの付着が有効に活用／考慮されていなかった。   On the other hand, conventionally, since the strength of the soil cement of the mountain retaining wall 2 is not so high, the H-shaped steel of the core material 1 of the synthetic wall portion 5 is treated as a component of the synthetic underground wall / the synthetic wall portion 5, and the H-shaped steel. The adhesion between the core material 1 and the soil cement was not effectively utilized / considered.

これに対し、本実施形態の合成地下壁を備えた構造物Ａでは、合成壁部５の芯材１のウェブ１ｂにもスタッド７を植設し、この部分のソイルセメント強度も床付け面以深の本設杭部分と同等とする。   On the other hand, in the structure A having the synthetic underground wall of the present embodiment, the stud 7 is also planted on the web 1b of the core material 1 of the synthetic wall portion 5, and the soil cement strength of this portion is deeper than the flooring surface. It is equivalent to the main pile part.

すなわち、本実施形態の合成地下壁を備えた構造物Ａにおいては、山留壁２と鉄筋コンクリート壁３を一体にした床付け面４より浅い部分の合成壁部５よりも下方に配設された床付け面４より深い部分のＨ形鋼のウェブ１ｂに本設杭用のスタッド７を植設することに加え、合成壁部５のＨ形鋼のウェブ１ｂに本設杭用のスタッド７を植設する。そして、床付け面４より深い部分の芯材１及びソイルセメントに加え、本設杭用のスタッド７が植設された合成壁部５の芯材１及びソイルセメントを本設の支持杭（本設杭部８）として扱うように構成されている。   That is, in the structure A having the synthetic underground wall of the present embodiment, it is disposed below the synthetic wall portion 5 which is shallower than the flooring surface 4 in which the mountain retaining wall 2 and the reinforced concrete wall 3 are integrated. In addition to planting the stud 7 for the permanent pile on the H-shaped steel web 1b deeper than the flooring surface 4, the stud 7 for the permanent pile is placed on the H-shaped steel web 1b of the composite wall 5. Plant. Then, in addition to the core material 1 and soil cement deeper than the flooring surface 4, the core material 1 and soil cement of the composite wall portion 5 in which studs 7 for permanent piles are planted are used as the supporting piles (main It is configured so as to be handled as a stake portion 8).

これにより、図２に示すように、合成壁部５／合成地下壁の側面部分においても芯材１のＨ形鋼とソイルセメントの一体化が確保できるため、合成地下壁と接する面以外のＨ形鋼とソイルセメントの付着力が向上し、且つ合成地下壁と反対側のソイルコラムと地盤Ｇとの周面摩擦力が向上する。ちなみに、図２中の符号Ｓ１は芯材１のＨ形鋼とソイルセメントの付着がとれる範囲、符号Ｓ２は山留壁２（ソイルコラム）と地盤Ｇの摩擦を考慮できる範囲を示している。   As a result, as shown in FIG. 2, the H-shaped steel of the core material 1 and the soil cement can be integrated even in the side surface portion of the synthetic wall 5 / the synthetic underground wall, so that H other than the surface in contact with the synthetic underground wall can be secured. The adhesion force between the shape steel and the soil cement is improved, and the peripheral frictional force between the soil column and the ground G on the side opposite to the synthetic underground wall is improved. Incidentally, reference numeral S1 in FIG. 2 indicates a range in which the H-shaped steel of the core material 1 and the soil cement can be adhered, and reference numeral S2 indicates a range in which friction between the mountain retaining wall 2 (soil column) and the ground G can be considered.

また、地下階が深い場合など、地下階側面部分も杭の一部と見なせるので、床付け面以深の杭長を短くしても、所望の杭の支持力／設計支持力を確保することができる。   In addition, since the basement side can be regarded as part of the pile, such as when the basement is deep, even if the pile length deeper than the flooring surface is shortened, it is possible to secure the desired bearing capacity / design bearing capacity of the pile. it can.

なお、図１に示すように合成壁部５／地下壁側面を全て杭（本設杭部８）としてもよいが、図４に示すように設計支持力で必要とする長さだけ、すなわち合成壁部５の一部に本設杭用のスタッド７を設け、合成壁部５の一部を本設杭部８とするように構成してもよい。また、本設杭用のスタッド７を設ける部分に強度の高いソイルセメントを打設するようにしてもよい。   In addition, as shown in FIG. 1, it is good also considering all the synthetic | combination wall part 5 / underground wall side as a pile (permanent pile part 8), but only the length required by design support force as shown in FIG. A stud 7 for a permanent pile may be provided on a part of the wall 5 and a part of the composite wall 5 may be a permanent pile 8. Alternatively, a high strength soil cement may be placed in a portion where the stud 7 for a permanent pile is provided.

さらに、１本あたりの本設杭用のスタッド７の耐力Ｖｓｕを下記の式（１）を用いて設定し、所定の耐力を確保できるようにスタッド７の長さ、本数を設定すればよい。 Further, the proof stress V su of the permanent pile 7 for one pile is set using the following formula (1), and the length and number of the studs 7 may be set so as to ensure a predetermined proof strength. .

Figure 2018062744
ここで、Ｖｓｕはスタッドのせん断耐力（Ｎ）、Ａｓｓはスタッドの軸部の断面積（ｍｍ２）、ｄｓｓはスタッドの軸径（ｍｍ）、ｈｓｓはスタッドの高さ（長さ）（ｍｍ）、ｆｃ’はソイルセメントの圧縮強度（Ｎ／ｍｍ２）である。また、ｆｃ’は例えば０．５〜５（Ｎ／ｍｍ２）とすることが好ましい。
Figure 2018062744
 Here, V su is the shear strength (N) of the stud, A ss is the cross-sectional area (mm 2 ) of the shaft portion of the stud, d ss is the shaft diameter (mm) of the stud, and h ss is the height (length) of the stud. ) (Mm), f c ′ is the compressive strength (N / mm 2 ) of the soil cement. Further, f c 'is preferably, for example, 0.5~5 (N / mm 2).

また、このような合成地下壁を備えた構造物Ａを施工する際には、予め、山留壁２と鉄筋コンクリート壁３を一体にした床付け面４より浅い部分の合成壁部５よりも下方に配設される床付け面４より深い部分のＨ形鋼のウェブ１ｂに本設杭用のスタッド７を植設するとともに、合成壁部５のＨ形鋼のウェブ１ｂに本設杭用のスタッド７を植設しておく。そして、該Ｈ形鋼をソイルセメント柱列壁の内部に埋設するようにすればよい。   Moreover, when constructing the structure A having such a synthetic underground wall, it is previously lower than the synthetic wall portion 5 which is shallower than the flooring surface 4 in which the mountain retaining wall 2 and the reinforced concrete wall 3 are integrated. A stud 7 for a permanent pile is planted in the H-shaped steel web 1b deeper than the flooring surface 4 disposed in the floor, and a permanent pile for the H-shaped steel web 1b of the composite wall portion 5 is installed. Stud 7 is planted. And what is necessary is just to embed this H-section steel inside the soil cement column wall.

したがって、本実施形態の合成地下壁を備えた構造物Ａ及び合成地下壁を備えた構造物Ａの施工方法においては、合成壁部５のＨ形鋼のウェブ１ｂに本設杭用のスタッド７が植設されていることにより、床付け面４より深い部分の芯材１及びソイルセメントだけでなく、合成壁部５の芯材１及びソイルセメントを本設の支持杭として扱うことができる。   Therefore, in the construction method of the structure A having the synthetic underground wall and the structure A having the synthetic underground wall according to the present embodiment, the stud 7 for the permanent pile is attached to the H-shaped steel web 1b of the synthetic wall portion 5. By being planted, not only the core material 1 and the soil cement deeper than the flooring surface 4 but also the core material 1 and the soil cement of the synthetic wall portion 5 can be handled as the main support pile.

これにより、本実施形態の合成地下壁を備えた構造物Ａ及び合成地下壁を備えた構造物Ａの施工方法によれば、従来と比較し、床付け面以深の本設杭の杭長を短くできる。よって、合理的に合成地下壁を備えた構造物Ａを構築することができ、施工性、経済性の向上を図ることが可能になる。   Thereby, according to the construction method of the structure A provided with the synthetic underground wall of this embodiment and the structure A provided with the synthetic underground wall, compared with the past, the pile length of the permanent pile deeper than the flooring surface is reduced. Can be shortened. Therefore, the structure A having a synthetic underground wall can be reasonably constructed, and it becomes possible to improve workability and economy.

以上、本発明に係る成地下壁を備えた構造物及び合成地下壁を備えた構造物の施工方法の一実施形態について説明したが、本発明は上記の一実施形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。   As mentioned above, although one Embodiment of the construction method of the structure provided with the structure underground wall and synthetic | combination underground wall which concern on this invention was described, this invention is not limited to said one Embodiment. It can be changed as appropriate without departing from the spirit of the invention.

１ 芯材（Ｈ形鋼）
１ａ フランジ
１ｂ ウェブ
２ 山留壁
３ 鉄筋コンクリート壁
４ 床付け面
５ 合成壁部（合成地下壁）
６ 合成壁用のスタッド
７ 本設杭用のスタッド
８ 本設杭部
Ａ 合成地下壁を備えた構造物
Ｇ 地盤 1 Core material (H-section steel)
DESCRIPTION OF SYMBOLS 1a Flange 1b Web 2 Yamadome wall 3 Reinforced concrete wall 4 Flooring surface 5 Synthetic wall part (synthetic underground wall)
6 Stud for synthetic wall 7 Stud for permanent pile 8 Permanent pile part A Structure G with synthetic underground wall Ground

Claims (2)

ソイルセメント柱列壁の内部にＨ形鋼の芯材を所定の間隔をあけて複数埋設してなる山留壁と、前記Ｈ形鋼のフランジに植設した合成壁用のスタッドを用いて床付け面より浅い部分の前記山留壁に本設の鉄筋コンクリート壁を一体に接合してなる合成地下壁を備えた構造物であって、
前記山留壁と前記鉄筋コンクリート壁を一体にした床付け面より浅い部分の合成壁部よりも下方に配設された床付け面より深い部分の前記Ｈ形鋼のウェブに本設杭用のスタッドが植設され、且つ前記合成壁部の前記Ｈ形鋼のウェブに本設杭用のスタッドが植設され、
床付け面より深い部分の芯材及びソイルセメントに加え、前記本設杭用のスタッドが植設された前記合成壁部の芯材及びソイルセメントを本設の支持杭として構成されていることを特徴とする合成地下壁を備えた構造物。 A floor using a mountain retaining wall in which a plurality of H-shaped steel cores are embedded at predetermined intervals inside a soil cement column wall, and a synthetic wall stud planted on the flange of the H-shaped steel. A structure comprising a synthetic underground wall formed by integrally joining a reinforced concrete wall of the main construction to the mountain retaining wall at a portion shallower than the attachment surface,
A stud for a permanent pile on the H-shaped steel web in a portion deeper than the flooring surface disposed below the composite wall portion shallower than the flooring surface in which the mountain retaining wall and the reinforced concrete wall are integrated. Are planted, and studs for permanent piles are planted on the H-shaped steel web of the composite wall,
In addition to the core material and soil cement in the part deeper than the flooring surface, the core material and soil cement of the synthetic wall portion in which the stud for the permanent pile is planted are configured as the supporting pile for the permanent installation. A structure with a characteristic synthetic underground wall. ソイルセメント柱列壁の内部にＨ形鋼の芯材を所定の間隔をあけて複数埋設してなる山留壁と、前記Ｈ形鋼のフランジに植設した合成壁用のスタッドを用いて床付け面より浅い部分の前記山留壁に本設の鉄筋コンクリート壁を一体に接合し、本設の合成地下壁を備えた構造物を構築する方法であって、
前記山留壁と前記鉄筋コンクリート壁を一体にした床付け面より浅い部分の合成壁部よりも下方に配設される床付け面より深い部分の前記Ｈ形鋼のウェブに本設杭用のスタッドを植設するとともに、前記合成壁部の前記Ｈ形鋼のウェブに本設杭用のスタッドを植設しておき、該Ｈ形鋼を前記ソイルセメント柱列壁の内部に埋設するようにしたことを特徴とする合成地下壁を備えた構造物の施工方法。 A floor using a mountain retaining wall in which a plurality of H-shaped steel cores are embedded at predetermined intervals inside a soil cement column wall, and a synthetic wall stud planted on the flange of the H-shaped steel. A method of constructing a structure having a permanent synthetic underground wall by integrally joining a reinforced concrete wall of the permanent building to the mountain retaining wall shallower than the attachment surface,
A stud for a permanent pile on the H-shaped steel web in a portion deeper than the flooring surface disposed below the composite wall portion shallower than the flooring surface in which the mountain retaining wall and the reinforced concrete wall are integrated. In addition, a stud for a main pile is planted in the H-shaped steel web of the composite wall, and the H-shaped steel is embedded in the soil cement column wall. The construction method of the structure provided with the synthetic underground wall characterized by this.
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