JP4382974B2 - Connection structure of wall and sheet pile member - Google Patents

Connection structure of wall and sheet pile member Download PDF

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Publication number
JP4382974B2
JP4382974B2 JP2000274294A JP2000274294A JP4382974B2 JP 4382974 B2 JP4382974 B2 JP 4382974B2 JP 2000274294 A JP2000274294 A JP 2000274294A JP 2000274294 A JP2000274294 A JP 2000274294A JP 4382974 B2 JP4382974 B2 JP 4382974B2
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Japan
Prior art keywords
sheet pile
joint
wall
steel sheet
shaped steel
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JP2002081058A (en
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喜三郎 山崎
英之 藤岡
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Taisei Corp
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Taisei Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、異種工法により施工される壁体と矢板部材の接合構造に関する。
【0002】
【従来の技術】
従来、例えば、ソイルミキシング地中連続壁(以下、「SMW」という)とU形鋼矢板等、異種工法により施工される壁体と矢板部材の接合部では、SMW1’の芯材であるH形鋼10’とU形鋼矢板20を確実に接合することができなかった。そこで、接合部の止水性を確保するために、薬液注入工法または高圧噴射注入工法(コラムジェットグラウト工法、JSG工法など)等を用いて、地盤改良を行っていた(図6参照)。ここで、符号Rは地盤改良体を示している。
【0003】
【発明が解決しようとする課題】
しかし、前記各種工法により地盤改良を行うことは、多大な施工費用を必要とするとともに、施工期間が長期化するという問題点を有していた。
また、SMW1’とU形鋼矢板20とから構成されている土留壁の内部掘削に伴い、当該土留壁が変形する場合があるが、その際に地盤改良体Rが追随して変形できない事態が生じることがある。この場合には、止水性に対する信頼性が損なわれることになるため、再度、同一領域に薬液等の注入を行うことや、新たな地盤改良を行わなければならず、さらに、施工費用及び施工期間が増加することになっていた。
【0004】
本発明は、前記の各問題点を解決するためになされたものであり、確実に接合可能であり止水性能を高めることができる、壁体と矢板部材の接合構造を提供することを目的とする。
【0005】
【課題を解決するための手段】
前記課題を解決するために、請求項1に記載の本発明は、芯材及びその周囲の固化体から形成されている壁体と、前記壁体に接合され、その端部に矢板継手を備える矢板部材との接合構造において、前記芯材は、前記矢板部材との接合部に前記矢板継手と嵌合する形状の継手部材を備えており、前記矢板部材で前記固化体を破砕しながら前記継手部材と前記矢板継手とを嵌合させることにより前記壁体と前記矢板部材とを接合したことを特徴としている。
【0006】
ここで、壁体は芯材と固化体とから形成されていればよく、柱列式地下連続壁、柱列式ソイルセメント壁、壁式地下連続壁、泥水固化壁等の各種構造の壁体に用いることができる。また、芯材は、H形鋼、I形鋼、鋼矢板、鉄筋篭等を用いることができ、固化体はモルタル、コンクリート、ソイルセメント、泥水等の固化材を用いて構築することができる。
さらに、矢板部材は端部に矢板継手を備える部材であればよく、U形鋼矢板、Z形鋼矢板、H形鋼矢板、直線形鋼矢板等の他、鋼管矢板等を用いることができる。
【0007】
従って、本発明によれば、芯材に継手部材を付設することにより、当該継手部材と矢板部材の矢板継手とを嵌合させることにより、前記芯材と矢板部材を確実に接合することができるため、止水性を大幅に向上させることができる。
【0008】
また、請求項2に記載の本発明は、請求項1に記載の壁体と矢板部材の接合構造において、前記芯材は、前記継手部材の周囲に、前記矢板継手を前記継手部材に嵌合する際に前記矢板継手によって破砕可能な防護部材を備えていることを特徴としている。
【0009】
ここで、防護部材は、矢板部材の圧入時において、固化体の幅を狭くすること、及び、固化体が継手部材の周囲に浸入することを防止することを主な役割とする部材であり、継手部材の周囲の少なくとも一部を覆うように設ける必要がある。この防護部材は、矢板部材の圧入時に破砕が容易であるように、地山の強度程度であればよく、その材質等に特に制限はないが、加工性や作業性等の点から、発泡ポリスチレン(いわゆる、発泡スチロール)を使用することが好適である。
また、形状が複雑である、継手部材と矢板継手の嵌合部の周囲に設ける防護部材には、注入時には液体状であり、その後固化する破砕容易な樹脂剤を用いることが好適であり、施工性を考慮すると発泡ウレタンを含有する樹脂剤であることが最適である。なお、この破砕容易な樹脂剤は、壁体を形成する固化体と比較して強度が小さい(地山の強度程度)ことが必要である。
【0010】
従って、本発明によれば、芯材における継手部材の周囲に防護部材を備えていることから、当該芯材と地山との間の固化体による改良幅を狭くすることにより、矢板部材の圧入時において、当該防護部材及び樹脂剤をガイドとして固化体の破砕を容易に行うことができるとともに、固化体を構成することになる材料(セメント系懸濁液等)が接合部に回り込むことにより固化することを防止することができる(特に、継手部材と矢板継手の嵌合部に有効である)。
【0011】
また、請求項3に記載の本発明は、請求項1又は請求項2に記載の壁体と矢板部材の接合構造において、前記芯材はH形鋼であり、前記H形鋼を構成する一方のフランジには前記継手部材が付設されており、前記H形鋼を構成する他方のフランジにはバランス部材が付設されていることを特徴としている。
ここで、バランス部材は、継手部材を付設したことにより、当該芯材の重心位置等の不均衡から生じる建て込み時における不安定性を是正するために設ける部材であり、前記継手部材の位置及び形状等に応じて、適切な位置に適切な形状の部材を設ける必要がある。
【0012】
従って、本発明によれば、芯材にH形鋼を使用した場合に、バランス部材を付設することにより、芯材の建て込み時において、左右方向の建て込み抵抗のバランスを確保することができ、施工性を向上させることができる。
【0013】
【発明の実施の形態】
以下、本発明の実施の一形態について、図面を参照して詳細に説明する。
なお、各実施形態の説明において、同一の構成要素に関しては同一の符号を付し、重複した説明は省略するとともに、図1〜図5において、図6と同一の要素については、同一の符号を付すものとする。
【0014】
本発明の壁体と矢板部材の接合構造を適用した土留壁の第1実施形態は、図1に示すように、複数のH形鋼10,10’を用いたソイルセメント柱列壁(以下、「柱列壁部1」という)を両側に構築するとともに、当該両側の柱列壁部1に直交する方向に、複数のU形鋼矢板(以下、「鋼矢板20」という)を配置して鋼矢板部2を構築し、当該柱列壁部1と鋼矢板部2の端部において両者を接合して、複合構造の土留壁を構築するものである。
図1における柱列壁部1の左側端部(以下、「壁端部1a」という)は、芯材であるH形鋼10と固化体17とから構成されている。この壁端部1aは、削孔混練装置(図示せず)を用い、セメント系懸濁液と原位置土とを混合撹拌し、その内部にH形鋼10を建て込むことにより構築されるものであり、前記セメント系懸濁液と原位置土とが固化することにより固化体17が形成される。
【0015】
図2及び図3に示すように、H形鋼10には、鋼矢板20との接合部である一方のフランジ10aの外側面における長さ方向の全長にわたり、後記鋼矢板セクション20a(矢板継手)と嵌合する鉤状のセクション11(継手部材)が(事前に)溶接されている。
また、前記フランジ10aの外側面には、セクション11の左右両側面部(図2参照)を覆うように、発泡ポリスチレン製の防護部材12A,12Bが接着剤により付設されている。このセクション11と防護部材12との間には、鋼矢板セクション20aを嵌合するための嵌合溝13が形成されている。また、この嵌合溝13とセクション11の下部の周囲には、発泡ウレタン樹脂剤である防護部材15が充填されており、当該嵌合溝13の内部にセメント系懸濁液等が浸入して固化することを防止している。
【0016】
なお、前記防護部材12A,12B,15は、H形鋼10と地山Gとの間の固化体17による改良幅を狭くして固化体の破砕を容易に行うことができるようにする役割を果たしている。また、防護部材12A,12Bは、嵌合溝13の内部にセメント系懸濁液等が浸入して固化することを防止するための発泡ウレタン樹脂剤(防護部材15)を充填する際の型枠としての役割(防護部材12A,12Bが対応する)をも果たす部材である。
さらに、図2及び図3(b)に示すように、H形鋼10の他方のフランジ10bには、側面視で浅皿形である鋼製のスペーサ14(バランス部材)が、長さ方向に所定間隔で付設されている(図中には1片のみを示す)。
【0017】
なお、柱列壁部1の壁端部1a以外の部分は、従来のソイルセメント柱列壁と同一の構造である。
【0018】
また、鋼矢板20は、左右の両端部に、同一断面形状の鉤状の鋼矢板セクション20a,20b(矢板継手)が形成されている公知の製品を使用することができる。これらの複数の鋼矢板20は、幅広部が対向する向きとなるように交互に配置され、両端のセクション20a,20bを嵌合させることにより接合されている。
【0019】
続いて、前記柱列壁部1(壁端部1a)と鋼矢板部2(鋼矢板20A)の接合方法について説明する。
なお、柱列壁部1と鋼矢板部2との接合部以外は、通常の方法により施工を行うことができるため、その説明は省略する。
【0020】
柱列壁部1と鋼矢板部2の接合方法は、(1)柱列壁部構築工程、及び、(2)鋼矢板接合工程から構成されている。
【0021】
(1)柱列壁部構築工程
本工程は、セメント系懸濁液と原位置土からなる混合撹拌体中に、前記H形鋼10を建て込み、端部の鋼矢板20A,20Bの建て込みに先行して柱列壁部1における壁端部1aを構築する工程である。このとき、防護部材12A,12Bを型枠として使用し、H形鋼10に付設されているセクション11の嵌合溝13の内部及び下部の周囲に発泡ウレタン樹脂剤である防護部材15を充填させた状態で、H形鋼10を建て込む必要がある。
【0022】
このように、前記セクション11の嵌合溝13の内部には、防護部材15が充填されているため、H形鋼10の建て込み時において、セメント系懸濁液等が当該嵌合溝13に浸入して固化することを防止することができる。また、H形鋼10にはスペーサ14が設けられているため、その建て込み時において、左右方向(フランジ10a,10bに直交する方向)の建て込み抵抗のバランスを確保することができ、施工性を向上させることができる。
【0023】
(2)鋼矢板接合工程
本工程は、前記嵌合溝13に鋼矢板20A(又は20B)の鋼矢板セクション20aを嵌挿させ、前記H形鋼10と鋼矢板20Aとを接合する工程である。
本工程は、既存の方法により、嵌合溝13に鋼矢板20Aの鋼矢板セクション20aを嵌挿させる作業を行うことになる。このとき、前記嵌合溝13には防護部材15が充填されていることから、当該嵌合溝13にセメント系懸濁液等が浸入することがない。そして、防護部材12A,12B,15の強度は地山G以下であるため、当該防護部材12A,12B,15をガイドとして、防護部材12A,12B,15を破砕(排除)しながら、容易に嵌挿させることができる。また、嵌合溝13以外の壁端部1aの部分についても、H形鋼10と地山Gとの間の固化体17による改良幅を狭くしていることから、鋼矢板20Aの下面部により、容易に破砕することができ、当該鋼矢板20Aの接合作業の効率を大幅に向上させることができる。
【0024】
このように、本発明によれば、H形鋼10に溶接されているセクション11と鋼矢板20Aの鋼矢板セクション20aとを嵌合して、両部材10,20Aを接合することにより、確実に止水性を確保することができる。そのため、従来、壁端部1aと鋼矢板20Aの接合部の近傍で行っていた地盤改良を不要とできることから、施工費用の低減及び施工期間の短縮を図ることができる。
なお、セクション11と防護部材12Bの間には、発泡ウレタン樹脂剤である防護部材15が充填されているが、嵌合溝13部以外の箇所は、固化して残ることになる。
【0025】
[その他の実施形態]
本発明の柱列壁部1と鋼矢板部2から構成される複合構造の土留壁は、前記第1実施形態に示す形状に示されるものに限られるものではない。
例えば、図4の第2実施形態に示すように、図中の左向きに開口部が形成されているコ字形状に形成した柱列壁部1に、図中上向きに開口部が形成されているコ字形状の鋼矢板部2を接合する構造であってもよい。
また、図5の第3実施形態に示すように、直角2等辺3角形形状の土留壁において、長辺部を鋼矢板部2とするとともに、他の2辺の部分を柱列壁部1とする構造であってもよい。
【0026】
以上、本発明について、好適な実施形態についての一例を説明したが、本発明は当該実施形態に限られず、本発明の趣旨を逸脱しない範囲で適宜設計変更が可能である。特に、壁体や矢板部材は、前記ソイルセメント柱列壁や、U形鋼矢板に限定されるものではなく、また、各要素の寸法、材質、数等についても制限はない。なお、バランス部材は必ずしも必要な部材ではなく、適宜、設けるものことができる部材である。さらに、矢板継手と継手部材の形状についても、両者を嵌合することができる形状であるならば、特に制限はない。
【0027】
【発明の効果】
本発明によれば、確実に接合可能であり止水性能を高めることができる、壁体と矢板部材の接合構造を提供することができる。
【図面の簡単な説明】
【図1】本発明を適用したソイルセメント柱列壁部と鋼矢板部から構成される複合構造の土留壁の第1実施形態を示す平面図である。
【図2】本発明の壁端部と鋼矢板の接合構造を示す平面図である。
【図3】(a),(b)ともに、本発明で使用するH形鋼の一部を拡大した斜視図である(防護部材は省略)。
【図4】本発明を適用したソイルセメント柱列壁部と鋼矢板部から構成される複合構造の土留壁の第2実施形態を示す平面図である。
【図5】本発明を適用したソイルセメント柱列壁部と鋼矢板部から構成される複合構造の土留壁の第3実施形態を示す平面図である。
【図6】従来におけるソイルセメント柱列壁部と鋼矢板部から構成される複合構造の土留壁を示す平面図である。
【符号の説明】
G 地山
1 ソイルセメント柱列壁(柱列壁部)
1a 壁端部(壁体)
10,10’ H形鋼(芯材)
10a,10b フランジ
11 セクション(継手部材)
12A,12B 防護部材
13 嵌合溝
14 スペーサ(バランス部材)
15 防護部材
17 固化体
2 鋼矢板部
20 U形鋼矢板(鋼矢板)(矢板部材)
20a,20b 鋼矢板セクション(矢板継手)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a joint structure between a wall body and a sheet pile member constructed by a different method.
[0002]
[Prior art]
Conventionally, for example, at the joint between a wall body and a sheet pile member constructed by different methods, such as a soil mixing underground continuous wall (hereinafter referred to as “SMW”) and a U-shaped steel sheet pile, an H-shape which is a core material of SMW 1 ′ The steel 10 ′ and the U-shaped steel sheet pile 20 could not be reliably joined. Then, in order to ensure the water-stopping property of the joint, the ground was improved by using a chemical solution injection method or a high-pressure injection injection method (column jet grouting method, JSG method, etc.) (see FIG. 6). Here, the code | symbol R has shown the ground improvement body.
[0003]
[Problems to be solved by the invention]
However, performing ground improvement by the various methods described above has a problem that a great construction cost is required and the construction period is prolonged.
Moreover, with the internal excavation of the retaining wall composed of the SMW 1 ′ and the U-shaped steel sheet pile 20, the retaining wall may be deformed. However, in that case, the ground improvement body R cannot follow and deform. May occur. In this case, since the reliability with respect to the water stoppage is impaired, it is necessary to inject a chemical solution or the like again into the same region, or to perform a new ground improvement, and further, the construction cost and construction period. Was supposed to increase.
[0004]
The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a joining structure of a wall body and a sheet pile member that can be reliably joined and can improve water-stopping performance. To do.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention according to claim 1 is provided with a wall body formed of a core material and a solidified body around the core material, and a sheet pile joint at the end of the wall body. In the joining structure with the sheet pile member, the core material includes a joint member having a shape that fits with the sheet pile joint at a joint portion with the sheet pile member, and the joint is obtained by crushing the solidified body with the sheet pile member. The wall body and the sheet pile member are joined by fitting a member and the sheet pile joint.
[0006]
Here, the wall body only needs to be formed of a core material and a solidified body, and has various structures such as a columnar underground continuous wall, a columnar soil cement wall, a walled underground continuous wall, and a muddy water solidified wall. Can be used. The core material can be H-shaped steel, I-shaped steel, steel sheet pile, reinforcing bar, etc., and the solidified body can be constructed using a solidified material such as mortar, concrete, soil cement, or muddy water.
Furthermore, a sheet pile member should just be a member provided with a sheet pile joint in an edge part, and besides a U-shaped steel sheet pile, a Z-shaped steel sheet pile, an H-shaped steel sheet pile, a linear steel sheet pile, etc., a steel pipe sheet pile etc. can be used.
[0007]
Therefore, according to the present invention, the core member and the sheet pile member can be reliably joined by fitting the joint member to the sheet pile joint of the sheet pile member by attaching the joint member to the core member. For this reason, the water stoppage can be greatly improved.
[0008]
Moreover, the present invention according to claim 2 is the joining structure of the wall body and the sheet pile member according to claim 1, wherein the core member is fitted around the joint member and the sheet pile joint is fitted to the joint member. In this case, a protective member that can be crushed by the sheet pile joint is provided.
[0009]
Here, the protective member is a member whose main role is to narrow the width of the solidified body and to prevent the solidified body from entering the periphery of the joint member during the press-fitting of the sheet pile member, It is necessary to provide at least a part of the periphery of the joint member. The protective member may be of the strength of natural ground so that it can be easily crushed when the sheet pile member is press-fitted, and the material thereof is not particularly limited, but from the viewpoint of workability and workability, the expanded polystyrene It is preferable to use (so-called expanded polystyrene).
In addition, it is preferable to use a resin material that has a complicated shape and is provided in the vicinity of the fitting portion between the joint member and the sheet pile joint, and is a liquid that is liquid at the time of injection and then solidified easily. Considering the properties, it is optimal that the resin agent contains foamed urethane. In addition, the resin agent that can be easily crushed needs to have lower strength (about the strength of natural ground) than the solidified body that forms the wall.
[0010]
Therefore, according to the present invention, since the protective member is provided around the joint member in the core material, the improvement of the solidified body between the core material and the ground is reduced, so that the sheet pile member is press-fitted. At times, the solidified body can be easily crushed using the protective member and the resin agent as a guide, and the solidified material (cement-based suspension, etc.) that has formed the solidified body goes around the joint. Can be prevented (especially effective for the fitting portion between the joint member and the sheet pile joint).
[0011]
Moreover, the present invention according to claim 3 is the junction structure of the wall body and the sheet pile member according to claim 1 or 2, wherein the core is an H-shaped steel, and constitutes the H-shaped steel. The flange is provided with the joint member, and the other flange constituting the H-shaped steel is provided with a balance member.
Here, the balance member is a member provided to correct instability at the time of erection caused by imbalance such as the position of the center of gravity of the core material by attaching the joint member, and the position and shape of the joint member It is necessary to provide a member having an appropriate shape at an appropriate position according to the above.
[0012]
Therefore, according to the present invention, when H-shaped steel is used for the core material, a balance member is provided, so that the balance of the built-in resistance in the left-right direction can be ensured when the core material is installed. The workability can be improved.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
In the description of each embodiment, the same components are denoted by the same reference numerals, and redundant description is omitted. In FIGS. 1 to 5, the same components as those in FIG. It shall be attached.
[0014]
As shown in FIG. 1, the first embodiment of the retaining wall to which the joining structure of the wall body and the sheet pile member of the present invention is applied is a soil cement column wall using a plurality of H-shaped steels 10, 10 ′ (hereinafter, "Columnar wall part 1") is constructed on both sides, and a plurality of U-shaped steel sheet piles (hereinafter referred to as "steel sheet piles 20") are arranged in a direction perpendicular to the columnar wall parts 1 on both sides. The steel sheet pile part 2 is constructed, and both the columnar wall part 1 and the end part of the steel sheet pile part 2 are joined to construct a composite structure retaining wall.
The left end portion (hereinafter referred to as “wall end portion 1 a”) of the columnar wall portion 1 in FIG. 1 is composed of an H-section steel 10 that is a core material and a solidified body 17. This wall end portion 1a is constructed by mixing and stirring the cement suspension and in-situ soil using a drilling and kneading device (not shown), and building the H-shaped steel 10 therein. The solidified body 17 is formed by solidifying the cementitious suspension and the in-situ soil.
[0015]
As shown in FIGS. 2 and 3, the H-section steel 10 has a steel sheet pile section 20a (sheet pile joint), which will be described later, over the entire length of the outer surface of one flange 10a, which is a joint with the steel sheet pile 20. The hook-shaped section 11 (joint member) that fits with is welded (in advance).
Further, protective members 12A and 12B made of polystyrene foam are attached to the outer side surface of the flange 10a with an adhesive so as to cover the left and right side portions (see FIG. 2) of the section 11. A fitting groove 13 for fitting the steel sheet pile section 20a is formed between the section 11 and the protection member 12. Further, the periphery of the fitting groove 13 and the lower portion of the section 11 is filled with a protective member 15 that is a foamed urethane resin agent, and cement-based suspension or the like enters the fitting groove 13. Prevents solidification.
[0016]
The protective members 12A, 12B, and 15 serve to narrow the improved width of the solidified body 17 between the H-section steel 10 and the natural ground G so that the solidified body can be easily crushed. Plays. Further, the protective members 12A and 12B are molds for filling a foamed urethane resin agent (protective member 15) for preventing cement suspension or the like from entering the solidified groove 13 and solidifying. It is a member that also fulfills the role (corresponding to the protective members 12A and 12B).
Further, as shown in FIGS. 2 and 3 (b), the other flange 10b of the H-shaped steel 10 is provided with a steel spacer 14 (balance member) that is shallow in a side view in the length direction. They are attached at predetermined intervals (only one piece is shown in the figure).
[0017]
In addition, parts other than the wall edge part 1a of the column row wall part 1 are the same structures as the conventional soil cement column row wall.
[0018]
Moreover, the steel sheet pile 20 can use the well-known product by which the steel sheet pile sections 20a and 20b (sheet pile coupling) of the same cross-sectional shape are formed in both right-and-left both ends. The plurality of steel sheet piles 20 are alternately arranged so that the wide portions face each other, and are joined by fitting the sections 20a and 20b at both ends.
[0019]
Then, the joining method of the said column row wall part 1 (wall edge part 1a) and the steel sheet pile part 2 (steel sheet pile 20A) is demonstrated.
In addition, since it can construct by a normal method except the junction part of the columnar wall part 1 and the steel sheet pile part 2, the description is abbreviate | omitted.
[0020]
The joining method of the columnar wall part 1 and the steel sheet pile part 2 is comprised from (1) pillar row wall part construction process, and (2) steel sheet pile joining process.
[0021]
(1) Column row wall construction process This process is to build the H-shaped steel 10 into a mixed stirring body composed of a cement suspension and in-situ soil, and the steel sheet piles 20A and 20B at the ends. It is the process of constructing | assembling the wall edge part 1a in the columnar wall part 1 in advance. At this time, the protective members 12A and 12B are used as a mold, and the protective member 15 which is a foamed urethane resin agent is filled inside and below the fitting groove 13 of the section 11 attached to the H-shaped steel 10. In this state, the H-section steel 10 needs to be installed.
[0022]
Thus, since the inside of the fitting groove 13 of the section 11 is filled with the protective member 15, when the H-section steel 10 is built, cement suspension or the like enters the fitting groove 13. Intrusion and solidification can be prevented. Moreover, since the spacer 14 is provided in the H-section steel 10, the balance of the built-in resistance of the left-right direction (direction orthogonal to the flanges 10a and 10b) can be ensured at the time of the built-in, and workability is improved. Can be improved.
[0023]
(2) Steel sheet pile joining step This step is a step of fitting the steel sheet pile section 20a of the steel sheet pile 20A (or 20B) into the fitting groove 13 and joining the H-shaped steel 10 and the steel sheet pile 20A. .
In this step, an operation of inserting the steel sheet pile section 20a of the steel sheet pile 20A into the fitting groove 13 by an existing method is performed. At this time, since the fitting groove 13 is filled with the protective member 15, cement-based suspension or the like does not enter the fitting groove 13. Since the strength of the protective members 12A, 12B, 15 is below the natural ground G, the protective members 12A, 12B, 15 are easily fitted while being crushed (excluded) using the protective members 12A, 12B, 15 as a guide. Can be inserted. Moreover, since the improvement width | variety by the solidified body 17 between the H-section steel 10 and the natural ground G is narrowed also about the part of wall edge part 1a other than the fitting groove | channel 13, by the lower surface part of 20 A of steel sheet piles. It can be easily crushed and the efficiency of the joining work of the steel sheet pile 20A can be greatly improved.
[0024]
Thus, according to the present invention, the section 11 welded to the H-section steel 10 and the steel sheet pile section 20a of the steel sheet pile 20A are fitted, and the both members 10 and 20A are joined, thereby reliably. Water-stopping property can be ensured. Therefore, since the ground improvement conventionally performed in the vicinity of the joint between the wall end 1a and the steel sheet pile 20A can be made unnecessary, it is possible to reduce the construction cost and the construction period.
The section 11 and the protective member 12B are filled with the protective member 15 that is a foamed urethane resin, but the portions other than the fitting groove 13 are solidified and remain.
[0025]
[Other Embodiments]
The retaining wall having a composite structure composed of the columnar wall portion 1 and the steel sheet pile portion 2 of the present invention is not limited to that shown in the shape shown in the first embodiment.
For example, as shown in the second embodiment of FIG. 4, an opening is formed upward in the figure in the columnar wall part 1 formed in a U shape in which the opening is formed in the left direction in the figure. The structure which joins the U-shaped steel sheet pile part 2 may be sufficient.
Moreover, as shown in 3rd Embodiment of FIG. 5, in the retaining wall of a right-angled isosceles triangle shape, while making a long side part into the steel sheet pile part 2, the part of the other two sides is the column wall part 1 It may be a structure.
[0026]
As mentioned above, although an example about a suitable embodiment was explained about the present invention, the present invention is not restricted to the embodiment concerned, and a design change is possible suitably in the range which does not deviate from the meaning of the present invention. In particular, the wall body and the sheet pile member are not limited to the soil cement column wall or the U-shaped steel sheet pile, and there are no restrictions on the size, material, number, etc. of each element. The balance member is not necessarily a required member, but can be provided as appropriate. Further, the shape of the sheet pile joint and the joint member is not particularly limited as long as it is a shape capable of fitting both.
[0027]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the joining structure of a wall body and a sheet pile member which can be joined reliably and can improve water stop performance can be provided.
[Brief description of the drawings]
FIG. 1 is a plan view showing a first embodiment of a composite retaining wall composed of a soil cement column wall portion and a steel sheet pile portion to which the present invention is applied.
FIG. 2 is a plan view showing a joining structure of a wall end and a steel sheet pile according to the present invention.
FIGS. 3 (a) and 3 (b) are enlarged perspective views of a part of the H-section steel used in the present invention (the protective member is omitted).
FIG. 4 is a plan view showing a second embodiment of a composite retaining wall composed of a soil cement column wall portion and a steel sheet pile portion to which the present invention is applied.
FIG. 5 is a plan view showing a third embodiment of a composite retaining wall composed of a soil cement column wall portion and a steel sheet pile portion to which the present invention is applied.
FIG. 6 is a plan view showing a conventional retaining wall having a composite structure including a soil cement column wall portion and a steel sheet pile portion.
[Explanation of symbols]
G Ground mountain 1 Soil cement column wall (column wall part)
1a Wall end (wall)
10, 10 'H-section steel (core material)
10a, 10b Flange 11 section (joint member)
12A, 12B Protection member 13 Fitting groove 14 Spacer (balance member)
15 Protection member 17 Solidified body 2 Steel sheet pile part 20 U-shaped steel sheet pile (steel sheet pile) (sheet pile member)
20a, 20b Steel sheet pile section (sheet pile joint)

Claims (3)

芯材及びその周囲の固化体から形成されている壁体と、
前記壁体に接合され、その端部に矢板継手を備える矢板部材との接合構造において、
前記芯材は、前記矢板部材との接合部に前記矢板継手と嵌合する形状の継手部材を備えており、
前記矢板部材で前記固化体を破砕しながら前記継手部材と前記矢板継手とを嵌合させることにより前記壁体と前記矢板部材とを接合したことを特徴とする壁体と矢板部材の接合構造。
A wall formed of a core material and its solidified body, and
In the joining structure with the sheet pile member joined to the wall body and provided with a sheet pile joint at its end,
The core material includes a joint member shaped to fit with the sheet pile joint at a joint portion with the sheet pile member,
The wall body and the sheet pile member are joined to each other by joining the joint member and the sheet pile joint while crushing the solidified body with the sheet pile member.
前記芯材は、前記継手部材の周囲に、前記矢板継手を前記継手部材に嵌合する際に前記矢板継手によって破砕可能な防護部材を備えていることを特徴とする請求項1に記載の壁体と矢板部材の接合構造。  The wall according to claim 1, wherein the core member includes a protective member that can be crushed by the sheet pile joint when the sheet pile joint is fitted to the joint member around the joint member. Bonding structure of body and sheet pile member. 前記芯材はH形鋼であり、前記H形鋼を構成する一方のフランジには前記継手部材が付設されており、前記H形鋼を構成する他方のフランジにはバランス部材が付設されていることを特徴とする請求項1又は請求項2に記載の壁体と矢板部材の接合構造。  The core is an H-shaped steel, the joint member is attached to one flange constituting the H-shaped steel, and the balance member is attached to the other flange constituting the H-shaped steel. The joint structure of a wall body and a sheet pile member according to claim 1 or 2,
JP2000274294A 2000-09-11 2000-09-11 Connection structure of wall and sheet pile member Expired - Fee Related JP4382974B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102713079A (en) * 2010-02-20 2012-10-03 朴康浩 Reinforced self-supported retaining wall structure making use of the arching effect and a construction method of excavations using the same

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JP5007255B2 (en) * 2008-03-18 2012-08-22 大成建設株式会社 Underground wall structure
JP2009235673A (en) * 2008-03-25 2009-10-15 Nippon Steel Corp Underground wall and method of building the same
KR101038598B1 (en) 2009-09-02 2011-06-03 한창헌 A Retaining Wall And Method For It
CN114934516A (en) * 2022-04-29 2022-08-23 中国二十二冶集团有限公司 Connecting device for joint positions of SMW construction method pile and Larsen steel sheet pile and construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102713079A (en) * 2010-02-20 2012-10-03 朴康浩 Reinforced self-supported retaining wall structure making use of the arching effect and a construction method of excavations using the same

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