JP2005171488A - Connection structure between steel wall and reinforced concrete plate - Google Patents

Connection structure between steel wall and reinforced concrete plate Download PDF

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JP2005171488A
JP2005171488A JP2003408489A JP2003408489A JP2005171488A JP 2005171488 A JP2005171488 A JP 2005171488A JP 2003408489 A JP2003408489 A JP 2003408489A JP 2003408489 A JP2003408489 A JP 2003408489A JP 2005171488 A JP2005171488 A JP 2005171488A
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steel
wall
steel wall
plate
reinforced concrete
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JP4389570B2 (en
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Takashi Kamijo
崇 上條
Yoichi Okuda
洋一 奥田
Akihisa Kameyama
彰久 亀山
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Nippon Steel Corp
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Sumitomo Metal Industries Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a connection structure between a steel wall and an RC plate capable of securely and rapidly connecting the steel wall to the RC plate constructed in the steel wall as a top plate or a bottom plate when the steel wall formed of assembled steel piles are used as a soil retaining wall in temporary installation and used as a part of the body structure of an underground structure when the underground structure such as a foundation structure or an excavated tunnel is constructed. <P>SOLUTION: The steel wall 1 is vertically constructed in an underground through a specified depth. An RC floor plate 2 is horizontally constructed on the inside of the steel wall 1. The steel wall 1 is constructed by driving the plurality of assembled steel piles 3 vertically parallel with each other in the radial direction of the assembled steel piles 3. The assembled steel piles 3 are formed of hat-shaped soil retaining steel materials 4 and wide-flange shape steels 5 having asymmetrical joints 4a and 4b at both ends. The end part of the main reinforcement 2a of the RC floor plate 2 is fixed to a space part 7 formed between the wide-flange shape-steels 5 and 5 with a concrete 2d. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は鋼製壁と鉄筋コンクリート（以下「ＲＣ」という）版との結合構造に関し、主に基礎構造物や開削トンネル等の地中構造物において、鋼製壁を仮設時の土留め壁として利用し、かつ地中構造物の本体構造の一部として利用する場合に適している。   The present invention relates to a connection structure of a steel wall and a reinforced concrete (hereinafter referred to as “RC”) plate, and mainly uses the steel wall as a retaining wall during temporary installation in underground structures such as foundation structures and open-cut tunnels. However, it is suitable for use as a part of the main body structure of the underground structure.

基礎構造物や開削トンネル等の地中構造物の構築に際し、土留め鋼材や鋼製矢板（鋼管矢板を含む）などからなる鋼製壁を仮設時の土留め壁として利用するとともに、完成時の本体構造物の一部として利用することにより、工期の短縮、建設コストの縮減、さらには施工スペースの削減などのメリットが期待できる。   When building underground structures such as foundation structures and open tunnels, steel walls made of earth retaining steel and steel sheet piles (including steel pipe sheet piles) are used as earth retaining walls during temporary construction. By using it as a part of the main body structure, benefits such as shortening the construction period, reduction of construction cost, and reduction of construction space can be expected.

ところで、土留め鋼材や鋼製矢板などからなる鋼製壁とＲＣ床版との結合部のように、構造形式の異なる構造体どうしを結合する複合構造では、結合部が構造上の弱点となりやすいため、強度および剛性がともに高く、しかも施工性に優れた結合構造が求められる。   By the way, in a composite structure in which structures with different structural types are connected, such as a steel wall made of earth retaining steel or steel sheet pile, and an RC floor slab, the joint tends to be a structural weakness. Therefore, there is a need for a bonded structure that has both high strength and rigidity and excellent workability.

このような構造形式の異なる構造体どうしの結合構造として、例えば図１２（ａ），（ｂ）に図示するように、鋼管からなる複数の鋼製矢板３０によって構築された鋼製壁３１を仮設時の土留め壁と本体構造物の一部に兼用し、ＲＣ床版３２の端部を鋼製壁３１に結合した結合構造が知られている。   For example, as shown in FIGS. 12 (a) and 12 (b), a steel wall 31 constructed by a plurality of steel sheet piles 30 made of steel pipes is temporarily installed as a coupling structure between structures having different structure types. A joint structure is known in which an earth retaining wall and a part of a main body structure are combined and an end portion of an RC floor slab 32 is joined to a steel wall 31.

この種の構造の場合、鋼製壁３１とその内側部に一体的に構築されたＲＣ壁３３とからなる合成壁３４が本体構造物として構築され、また鋼製壁３１とＲＣ床版３２との結合部に複数の長尺ずれ止め３５と短尺ずれ止め３６がそれぞれ突設され、また壁配力筋３７とＲＣ床版３２の主鉄筋３８の端部がそれぞれ配筋され、さらにＲＣ床版３２とＲＣ壁３３のコンクリート３９が連続かつ一体的に打設されている。   In the case of this type of structure, a synthetic wall 34 composed of a steel wall 31 and an RC wall 33 constructed integrally therewith is constructed as a main body structure, and the steel wall 31 and the RC floor slab 32 A plurality of long-length stoppers 35 and short-length stoppers 36 project from the joints of the two, and the end portions of the wall reinforcing bars 37 and the main reinforcing bars 38 of the RC floor slab 32 are arranged, respectively. 32 and concrete 39 of the RC wall 33 are continuously and integrally placed.

特に、長尺ずれ止め３５と短尺ずれ止め３６は、ＲＣ床版３２の主鉄筋３８の引張力を鋼製壁３１側に伝達させるもので、引張力が作用する位置の鋼製壁３１側の側面部に水平に突設されている。   In particular, the long slip stopper 35 and the short slip stopper 36 transmit the tensile force of the main reinforcing bar 38 of the RC floor slab 32 to the steel wall 31 side, and the steel wall 31 side of the position where the tensile force acts is provided. Projected horizontally on the side.

また、壁配力筋３７は鋼製壁３１に沿って水平に配筋され、主鉄筋３８はＲＣ床版３２の表層部に鋼製壁３１に対して垂直に配筋され、その端部は鋼製壁３１に沿って下方に折り曲げて定着されている（特許文献１参照）。
特開平７−３１７０８７号公報 特開平５−３３１８３６号公報 In addition, the wall reinforcing bar 37 is horizontally arranged along the steel wall 31, the main reinforcing bar 38 is arranged perpendicularly to the steel wall 31 on the surface layer portion of the RC floor slab 32, and the end portion thereof is It is fixed by bending downward along the steel wall 31 (see Patent Document 1).
Japanese Unexamined Patent Publication No. 7-317087 JP-A-5-331836

しかし、上記した結合構造では、特に長尺ずれ止め３５は鋼製壁３１に施工現場で取り付ける必要があるため、施工性を損ない、構造物の建設コストを増大させるだけでなく、施工が煩雑化して工期の長期化を免れない等の問題点があった。   However, in the above-described coupling structure, in particular, since the long displacement stopper 35 needs to be attached to the steel wall 31 at the construction site, not only the workability is impaired and the construction cost of the structure is increased, but also the construction becomes complicated. As a result, there was a problem that the construction period could not be extended.

また、長尺ずれ止め３５の取り付け方法として溶接による方法が示されているが、現場溶接は天候や溶接工の熟練度などによって大きく溶接精度が左右されやすく、そのため、溶接部の品質を確保するのが非常に難しいだけでなく、長尺ずれ止め３５の施工性や品質確保に問題があり、長尺ずれ止め３５の強度低下を招く恐れもあった。   In addition, although a welding method is shown as a method of attaching the long displacement stopper 35, the welding accuracy is greatly affected by the weather and the skill level of the welder, so that the quality of the welded portion is ensured. This is not only very difficult, but there is a problem in workability and quality assurance of the long-length stopper 35, and the strength of the long-length stopper 35 may be reduced.

本発明は、上記課題を解決するためになされたもので、鋼製壁とその内側に頂版または底版として構築されるＲＣ版との結合を、結合部の簡素化などにより確実かつ迅速に行うことを可能にした鋼製壁とＲＣ版との結合構造を提供することを目的とするものである。   The present invention has been made to solve the above-described problems, and the steel wall and the RC plate constructed as a top plate or a bottom plate inside thereof are reliably and quickly connected by simplifying the connecting portion or the like. An object of the present invention is to provide a connection structure between a steel wall and an RC plate that makes it possible.

請求項１記載の鋼製壁と鉄筋コンクリート（以下「ＲＣ」という）版との結合構造は、複数の組立矢板からなる鋼製壁とＲＣ版との結合構造において、前記組立矢板は土留め鋼材と形鋼とから形成するとともに、前記形鋼を前記ＲＣ版側に向けて配置し、前記形鋼間に形成された空間部内に前記ＲＣ版の主鉄筋の端部を挿入し、かつ前記空間部内にコンクリートを打設して構築されてなることを特徴とするものである。   The steel wall and the reinforced concrete (hereinafter referred to as “RC”) plate connecting structure according to claim 1 are a steel wall and RC plate connecting structure composed of a plurality of assembly sheet piles, and the assembly sheet pile is a retaining steel material. The shape steel is arranged toward the RC plate side, the end of the main reinforcing bar of the RC plate is inserted into the space formed between the shape steel, and the space It is characterized by being constructed by placing concrete in the wall.

本発明は、掘削道路、あるいは基礎構造物や開削トンネル等の地中構造物の構築に際し、組立矢板からなる鋼製壁を仮設時の土留め壁として利用し、かつ地中構造物の本体構造の一部としても利用する場合に、鋼製壁とその内側に頂版または底版として構築されるＲＣ版との結合を、結合部の簡素化などにより確実かつ迅速に行うことを可能にしたものである。   The present invention uses a steel wall made of an assembled sheet pile as a retaining wall during temporary construction when constructing underground structures such as excavation roads or foundation structures or open tunnels, and the structure of the underground structure When used as a part of the steel plate, the steel wall and the RC plate built as the top or bottom plate inside can be connected reliably and quickly by simplifying the connecting part. It is.

鋼製壁は、土留め鋼材とその一側部に設けられた形鋼とからなる複数の組立矢板を地中に互いに連結しながら打ち込んで構築することができ、特に形鋼を設けることにより床版などのＲＣ版端部の固定を確実かつ簡単に行うことができ、また大きな土圧にも確実に耐えることができる。   A steel wall can be constructed by driving a plurality of assembly sheet piles composed of earth retaining steel and a section steel provided on one side of the steel sheet into the ground while being connected to each other. The end of the RC plate such as a plate can be fixed reliably and easily, and can withstand a large earth pressure.

また、ＲＣ版の主鉄筋の端部は、形鋼間に形成された空間部に挿入し、その後からコンクリートを打設することにより簡単に定着することができるため、従来必要とされていた長尺スタッドが不要になり、その結果、材料費の節減や現場施工の簡素化などによる工期の大幅な短縮を図ることができる。   In addition, the end of the main reinforcing bar of the RC plate can be easily fixed by inserting it into the space formed between the structural steels, and then placing concrete into it. A shaku stud is not required, and as a result, the construction period can be greatly shortened by saving material costs and simplifying on-site construction.

なお、この場合のコンクリートとして高強度コンクリートを用いることにより主鉄筋端部の定着力を著しく高めることができる。また、この場合の形鋼には、例えばＨ形鋼、Ｔ形鋼、Ｌ形鋼または十字形鋼などのように、曲げ剛性が非常に大きく、土留め鋼材の一側部に溶接などによって簡単に取り付けることができるものを用いればよい。   In addition, the fixing force of the main reinforcing bar end can be remarkably enhanced by using high-strength concrete as the concrete in this case. In addition, the shape steel in this case has a very large bending rigidity, such as H-shaped steel, T-shaped steel, L-shaped steel, or cross-shaped steel, and can be easily welded to one side of the retaining steel material. What is necessary is just to use what can be attached to.

また、土留め鋼材としては、例えば両端に継手を有するハット形鋼材、Ｕ形鋼材、あるいは鋼製矢板などを用いることができる。   Moreover, as earth retaining steel materials, for example, hat-shaped steel materials having joints at both ends, U-shaped steel materials, steel sheet piles, or the like can be used.

請求項２記載の鋼製壁とＲＣ版との結合構造は、請求項１記載の鋼製壁とＲＣ版との結合構造において、鋼製壁は複数の組立矢板を土留め鋼材と交互に配置して構築されてなることを特徴とするものである。   The connection structure between the steel wall and the RC plate according to claim 2 is the connection structure between the steel wall and the RC plate according to claim 1, wherein the steel wall has a plurality of assembly sheet piles arranged alternately with retaining steel. It is characterized by being constructed.

本発明によれば、特に隣接する形鋼間に大きな空間部を形成できるため、配筋やコンクリートの打設が非常に容易になる等して施工性が大幅に向上する。   According to the present invention, since a large space can be formed between the adjacent structural steels in particular, the workability is greatly improved by making it very easy to place reinforcing bars and concrete.

請求項３記載の鋼製壁とＲＣ版との結合構造は、請求項１または２記載の鋼製壁とＲＣ版との結合構造において、鋼製壁と鉄筋コンクリート版との結合部における形鋼の側部に補強鋼板が取り付けられてなることを特徴とするものである。   The connection structure between the steel wall and the RC plate according to claim 3 is the connection structure between the steel wall and the RC plate according to claim 1 or 2, wherein the shape steel is formed at the connection portion between the steel wall and the reinforced concrete plate. A reinforcing steel plate is attached to the side portion.

本発明によれば、鋼製壁に大きなせん断力が作用した際、このせん断力によって形鋼のウェブがせん断降伏するのを確実に防止することができる。一般に、ＲＣ版が鋼製壁に対して相対的に強度が大きい場合や、ＲＣ版の版厚が比較的薄い場合、ＲＣ版から鋼製壁側に伝達される曲げモーメントによって鋼製壁に大きなせん断力が生じることになるため、形鋼として例えば、Ｈ形鋼が用いられている場合、Ｈ形鋼のウェブがせん断降伏する恐れがある。なお、補強鋼板は、作用するせん断力の大きさに応じてＨ形鋼のウェブの片側または両側に取り付けることができる。   According to the present invention, when a large shearing force acts on the steel wall, it is possible to reliably prevent the shaped steel web from being sheared and yielded by this shearing force. Generally, when the RC plate has a relatively large strength with respect to the steel wall, or when the plate thickness of the RC plate is relatively thin, the steel wall has a large bending moment transmitted from the RC plate to the steel wall side. Since a shear force is generated, for example, when an H-section steel is used as the shape steel, the web of the H-section steel may be shear yielded. The reinforcing steel plate can be attached to one side or both sides of the H-shaped steel web depending on the magnitude of the acting shear force.

請求項４記載の鋼製壁とＲＣ版との結合構造は、請求項１〜３のいずれかに記載の鋼製壁とＲＣ版との結合構造において、鋼製壁と鉄筋コンクリート版との結合部における形鋼の側部にずれ止め突起が突設されてなることを特徴とするものである。   The connection structure between the steel wall and the RC plate according to any one of claims 1 to 3, wherein the connection structure between the steel wall and the RC plate according to any one of claims 1 to 3 is a connection portion between the steel wall and the reinforced concrete plate. The structure is characterized in that a shift protrusion is projected from the side of the shape steel.

本発明によれば、結合部における鋼製壁とコンクリートとの完全な一体化により、結合部における応力分散が図られるため、結合部におけるコンクリートの局部的な破壊や欠け落ち等を防止することができ、しかも鋼製壁と結合部コンクリートとの一体性を高めることができる。   According to the present invention, since the steel wall and the concrete in the joint portion are completely integrated, the stress distribution in the joint portion is achieved, so that local destruction or chipping of the concrete in the joint portion can be prevented. Moreover, the integrity of the steel wall and the joint concrete can be enhanced.

なお、この場合のずれ止め突起を突設する方法としては、例えば丸鋼、角鋼、異形鉄筋などを溶接によって取り付けたり、溶接ビードにより突起を付与したり、あるいは形鋼の圧延製造時に一体的に形成するなどの方法があり、特に圧延でずれ止め突起を付与すれば、形鋼の全長に渡ってずれ止め突起を容易に形成できる。   In this case, as a method for projecting the slip prevention protrusion, for example, round steel, square steel, deformed rebar, etc. are attached by welding, a protrusion is provided by a weld bead, or integrally when rolling the shape steel. There is a method such as forming, and in particular, if a locking protrusion is provided by rolling, the locking protrusion can be easily formed over the entire length of the shape steel.

また、ずれ止め突起は、高さが数ｍｍ〜数十ｍｍ程度あればその機能を十分に発揮するので、土留め鋼材を地中に打ち込む前にあらかじめ工場で土留め鋼材に取り付けておけば、現場施工に際して邪魔になることもない。   In addition, if the height of the anti-slip projection is several mm to several tens of mm, its function will be sufficiently exerted, so if it is attached to the earth retaining steel at the factory in advance before the earth retaining steel is driven into the ground, There is no hindrance during construction.

請求項５記載の鋼製壁とＲＣ版との結合構造は、請求項１〜４のいずれかに記載の鋼製壁とＲＣ版との結合構造において、鋼製壁の内側にコンクリートが打設されてなることを特徴とすることを特徴とするものである。   The connection structure between the steel wall and the RC plate according to claim 5 is the connection structure between the steel wall and the RC plate according to any one of claims 1 to 4, wherein concrete is placed inside the steel wall. It is characterized by being made.

本発明によれば、特に鋼製壁とコンクリートとからなる合成壁として大きな土圧に抵抗するので、土留め壁の強度や剛性が著しく向上する。   According to the present invention, particularly as a composite wall made of steel wall and concrete, it resists a large earth pressure, so that the strength and rigidity of the retaining wall are remarkably improved.

請求項６記載の鋼製壁とＲＣ版との結合構造は、請求項１〜５のいずれかに記載の鋼製壁とＲＣ版との結合構造において、組立矢板は非対称継手を有するハット形土留め鋼材とＨ形鋼とから形成されてなることを特徴とするものである。   The connection structure between the steel wall and the RC plate according to claim 6 is the connection structure between the steel wall and the RC plate according to any one of claims 1 to 5, wherein the assembly sheet pile has a hat-shaped soil having an asymmetric joint. It is formed from a retaining steel material and an H-shaped steel.

請求項１〜６記載のいずれの発明においても、鋼製壁とＲＣ版とからなる複合構造物においては、両構造体を剛に結合して、曲げモーメント、せん断力、軸力を円滑に伝達させる必要がある。   In any of the first to sixth aspects of the present invention, in a composite structure composed of a steel wall and an RC plate, both structures are rigidly coupled to smoothly transmit bending moment, shear force, and axial force. It is necessary to let

この種の複合構造物においは、現場で施工されるＲＣ版の版厚をできるだけ薄くすることが、施工性、建設コストの面から好ましが、ＲＣ版の版厚を薄くすると、ＲＣ版の曲げモーメントによって生じる主鉄筋の引張力が大きくなるので、この引張力をいかにして確実に鋼製壁に定着させるかが構造上の課題となる。   In this type of composite structure, it is preferable to reduce the plate thickness of the RC plate installed on site as much as possible in terms of workability and construction cost. Since the tensile force of the main rebar generated by the bending moment increases, how to reliably fix this tensile force to the steel wall is a structural problem.

本発明では、ＲＣ版の主鉄筋の端部を鋼製壁とＲＣ版との結合部に打設したコンクリート内に定着させる方法を採用し、鋼製壁には土留め鋼材と形鋼とからなる組立矢板を用いており、主鉄筋の引張力は、以下の経路で鋼製壁に伝達される。   In the present invention, a method is adopted in which the end of the main reinforcing bar of the RC plate is fixed in the concrete cast in the joint between the steel wall and the RC plate, and the steel wall is made of earth retaining steel and shaped steel. The assembling sheet pile is used, and the tensile force of the main reinforcing bar is transmitted to the steel wall through the following path.

（１）ＲＣ版の主鉄筋の付着力による伝達、（２）結合部に打設されたコンクリートの
支圧力による伝達、そして（３）鋼製壁の形鋼フランジ内面
上記（３）において、鋼製壁の形鋼フランジ内面にはコンクリートからの支圧力が面外力として作用するが、形鋼のフランジは周囲をコンクリートに取り囲まれているので、この面外力によりフランジが局部変形することなく円滑な荷重伝達が図られる。 (1) Transmission due to adhesion of main reinforcement of RC plate, (2) Transmission due to bearing pressure of concrete placed in joint, and (3) Shaped steel flange inner surface of steel wall In (3) above, Although the support pressure from concrete acts as an out-of-plane force on the inner surface of the steel flange of the wall, the flange of the steel is surrounded by concrete, so the flange does not deform locally due to this out-of-plane force. Load transmission is achieved.

以上に示した荷重伝達方法が現実のものであることを検証するために、本発明の結合構造を対象に載荷実験を実施した。   In order to verify that the load transmission method described above is actual, a loading experiment was performed on the joint structure of the present invention.

供試体の形状を図８（ａ），（ｂ）に、実験配置図を図９に、実験結果を図１０（ａ），（ｂ）に、そして供試体の最終破壊状況を図１１にそれぞれ示した。   The shape of the specimen is shown in FIGS. 8A and 8B, the experimental layout is shown in FIG. 9, the experimental results are shown in FIGS. 10A and 10B, and the final fracture state of the specimen is shown in FIG. Indicated.

載荷実験では、結合部を閉じる方向と開く方向に荷重を繰返し作用させたが、ＲＣ版の主鉄筋は結合部から引抜けることは無かった。また、図１０（ａ），（ｂ）の実験結果から、ＲＣ版のａ断面で鉄筋が降伏してＲＣ版が終局状態に至っても、結合部は破壊しないことが確認された。さらに、図１１の最終破壊状況からもＲＣ床版の損傷は、Ａ部に集中しており、結合部が十分な強度を有していることが確認できる。以上の実験結果により、本発明によれば、鋼製壁とＲＣ版とを強固に結合できることが明らかになった。   In the loading test, the load was repeatedly applied in the closing direction and the opening direction, but the main reinforcing bar of the RC plate was not pulled out from the connecting portion. Further, from the experimental results of FIGS. 10A and 10B, it was confirmed that even when the reinforcing bar yields in the RC section of the RC plate and the RC plate reaches the final state, the joint is not broken. Furthermore, it can be confirmed from the final fracture state of FIG. 11 that the damage to the RC floor slab is concentrated in the A portion, and the joint portion has sufficient strength. From the above experimental results, it has been clarified that according to the present invention, the steel wall and the RC plate can be firmly coupled.

請求項１記載の鋼製壁とＲＣ版との結合構造によれば、特に鋼製壁は土留め鋼材とその一側部に設けられた形鋼とからなる複数の組立矢板を地中に互いに連結しながら打ち込んで構築され、特に形鋼が設けられていることにより床版などのＲＣ版端部の固定を確実かつ簡単に行うことができ、また大きな土圧にも強固に耐えることができる。   According to the coupling structure of the steel wall and the RC plate according to claim 1, in particular, the steel wall has a plurality of assembly sheet piles made of earth retaining steel material and a shape steel provided on one side thereof in the ground. It is constructed by driving it in while connecting it, and it is possible to securely and easily fix the end of the RC plate such as a floor slab, and it can withstand strong earth pressures. .

また、ＲＣ版の主鉄筋の端部は、形鋼間に形成された空間部に挿入し、その後からコンクリートを打設することにより簡単に定着することができるため、従来必要とされていた長尺スタッド等が不要になり、その結果、材料費の節減や現場施工の簡素化などによる工期の大幅な短縮を図ることができる。   In addition, the end of the main reinforcing bar of the RC plate can be easily fixed by inserting it into the space formed between the structural steels, and then placing concrete into it. Shaft studs and the like are no longer necessary, and as a result, the construction period can be greatly shortened by saving material costs and simplifying on-site construction.

請求項２記載の鋼製壁とＲＣ版との結合構造は、請求項１記載の鋼製壁とＲＣ版との結合構造において、特に鋼製壁が複数の組立矢板を土留め鋼材と交互に配置して構築されていることにより、隣接する形鋼間に大きな空間部を形成できるため、配筋、主鉄筋の定着、さらにはコンクリートの打設などが非常に容易になる等して施工性が大幅に向上する。   The connection structure between the steel wall and the RC plate according to claim 2 is the connection structure between the steel wall and the RC plate according to claim 1, and in particular, the steel wall alternately has a plurality of assembled sheet piles with earth retaining steel materials. By arranging and constructing, it is possible to form a large space between adjacent structural steel, so it is very easy to place reinforcements, fix main reinforcing bars, and place concrete, etc. Is greatly improved.

請求項３記載の鋼製壁とＲＣ版との結合構造は、請求項１または２記載の鋼製壁とＲＣ版との結合構造において、特に鋼製壁と鉄筋コンクリート版との結合部における形鋼の側部に補強鋼板が取り付けられているため、鋼製壁に作用する大きなせん断力によって形鋼のウェブがせん断降伏するのを確実に防止することができる。   The connection structure between the steel wall and the RC plate according to claim 3 is the connection structure between the steel wall and the RC plate according to claim 1 or 2, particularly at the connection portion between the steel wall and the reinforced concrete plate. Since the reinforcing steel plate is attached to the side portion of the steel plate, it is possible to reliably prevent the yielding of the shaped steel web due to the large shearing force acting on the steel wall.

請求項４記載の鋼製壁とＲＣ版との結合構造は、請求項１〜３のいずれかに記載の鋼製壁とＲＣ版との結合構造において、鋼製壁と鉄筋コンクリート版との結合部における形鋼の側部にずれ止め突起が突設されていることで、結合部における鋼製壁とコンクリートとの完全な一体化により、結合部における応力分散が図られるため、結合部におけるコンクリートの局部的な破壊や欠け落ち等を防止することができ、しかも鋼製壁と結合部コンクリートとの一体性を高めることができる。   The connection structure between the steel wall and the RC plate according to any one of claims 1 to 3, wherein the connection structure between the steel wall and the RC plate according to any one of claims 1 to 3 is a connection portion between the steel wall and the reinforced concrete plate. Since the projections on the side of the shape steel at the projecting part project in the joint, the steel wall and the concrete at the joint are completely integrated to distribute the stress at the joint. Local breakage and chipping can be prevented, and the integrity between the steel wall and the joint concrete can be enhanced.

請求項５記載の鋼製壁とＲＣ版との結合構造は、請求項１〜４のいずれかに記載の鋼製壁とＲＣ版との結合構造において、鋼製壁の内側にコンクリートが打設されていることで、特に鋼製壁とコンクリートとからなる合成壁として大きな土圧に抵抗するので、強度的に非常に安定した土留め壁を構築することができる。   The connection structure between the steel wall and the RC plate according to claim 5 is the connection structure between the steel wall and the RC plate according to any one of claims 1 to 4, wherein concrete is placed inside the steel wall. Since it resists a large earth pressure especially as a synthetic wall made of a steel wall and concrete, a highly stable earth retaining wall can be constructed.

請求項６記載の鋼製壁とＲＣ版との結合構造は、それぞれ組立矢板が非対称継手を有するハット形土留め鋼材とＨ形鋼、対称継手を有するＵ形土留め鋼材とＨ型鋼とから形成されているため、いずれも非常に曲げ剛性の大きい鋼製壁を構築することができる。   The steel wall and RC plate coupling structure according to claim 6 is formed of a hat-shaped earth retaining steel material and an H-shaped steel each having an asymmetric joint as an assembly sheet pile, and a U-shaped earth retaining steel material and an H-shaped steel having a symmetrical joint. Therefore, it is possible to construct a steel wall having a very high bending rigidity.

図１（ａ），（ｂ）は、本発明に係る鋼製壁とＲＣ版（以下、「ＲＣ床版」という）との結合構造の一例を示し、図において鋼製壁１は地中に所定の深さにわたって鉛直に構築され、またＲＣ床版２は鋼製壁１の内側に水平に構築されている。   1 (a) and 1 (b) show an example of a connecting structure of a steel wall and an RC plate (hereinafter referred to as “RC floor slab”) according to the present invention, and in FIG. The RC floor slab 2 is constructed vertically over a predetermined depth, and the RC floor slab 2 is constructed horizontally inside the steel wall 1.

鋼製壁１は、複数の組立矢板３を地中に鉛直にかつ組立矢板３の径方向に並列に打ち込んで構築されている。組立矢板３は両端に非対称継手４ａ，４ｂをそれぞれ有するハット形土留め鋼材４とＨ形鋼５とから形成され、Ｈ形鋼５はＲＣ床版２が取り付くハット形土留め鋼材４の内側に鉛直に配置され、かつハット形土留め鋼材４のフランジ部に溶接等の方法によって一体的に取り付けられている。   The steel wall 1 is constructed by driving a plurality of assembly sheet piles 3 into the ground vertically and in parallel in the radial direction of the assembly sheet piles 3. The assembled sheet pile 3 is formed of a hat-shaped retaining steel material 4 and an H-shaped steel 5 each having asymmetric joints 4 a and 4 b at both ends, and the H-shaped steel 5 is disposed inside the hat-shaped retaining steel material 4 to which the RC floor slab 2 is attached. It arrange | positions vertically and is integrally attached to the flange part of the hat-shaped earth retaining steel material 4 by methods, such as welding.

また、鋼製壁１とＲＣ床版２との結合部におけるＨ形鋼５のフランジ５ａの側面部に、上下方向のせん断力を伝達させるためのずれ止め６が取り付けられている。   In addition, a detent 6 for transmitting a shearing force in the vertical direction is attached to a side surface portion of the flange 5a of the H-section steel 5 in the joint portion between the steel wall 1 and the RC floor slab 2.

ずれ止め６は主にせん断力の伝達を役割とするものであるため、高さの低いものを用いることができ、例えば孔あき鋼板、頭付きスタッド等が用いられ、特に高さの低いずれ止め６を取り付ければ、ずれ止め６を溶接した状態でハット形土留め鋼材４を地中に打ち込むことができる等、施工に際してずれ止め６が邪魔になることはない。   Since the stopper 6 mainly has a role of transmitting shearing force, it can be used with a low height, for example, a perforated steel plate, a headed stud, etc. are used. If 6 is attached, the stopper 6 will not interfere with the construction, for example, the hat-type earth retaining steel material 4 can be driven into the ground while the stopper 6 is welded.

なお、Ｈ形鋼５の代わりとしてＴ形鋼（図省略）を用い、Ｔ形鋼のウェブ端をハット形土留め鋼材４の側面部に溶接などによって固着することにより形成された組立矢板も本発明に適用できる。   An assembled sheet pile formed by using a T-shaped steel (not shown) instead of the H-shaped steel 5 and fixing the web end of the T-shaped steel to the side surface portion of the hat-shaped retaining steel material 4 by welding or the like. Applicable to the invention.

ＲＣ床版２は複数の主鉄筋２ａ、配力筋２ｂ、ハンチ筋２ｃおよびコンクリート２ｄから構築され、特に強度を高めるためにコンクリート２ｄ内にＨ形鋼などの鉄骨材（図省略）を配置してＳＲＣ構造とすることも可能である。   The RC floor slab 2 is constructed from a plurality of main reinforcing bars 2a, distribution bars 2b, haunch bars 2c and concrete 2d, and in particular, steel frames such as H-section steel (not shown) are arranged in the concrete 2d to increase the strength. SRC structure is also possible.

主鉄筋２ａは鋼製壁１に対して垂直に、鋼製壁１の連続方向（幅方向）に所定間隔おきに、かつ上下二段に配筋されている。また、各主鉄筋２ａの鋼製壁１側の端部はＨ形鋼５，５間に形成された空間部７内に挿入され、かつ空間部７内において主鉄筋２ａ端部の定着部として鋼製壁１に沿って上側または下側に折り曲げられている。   The main reinforcing bars 2a are arranged perpendicularly to the steel wall 1 at predetermined intervals in the continuous direction (width direction) of the steel wall 1 and in two upper and lower stages. Further, the end of each main reinforcing bar 2a on the steel wall 1 side is inserted into a space 7 formed between the H-shaped steels 5 and 5, and in the space 7 as a fixing portion of the end of the main rebar 2a. It is bent along the steel wall 1 upward or downward.

また、配力筋２ｂは主鉄筋２ａの上に主鉄筋２ａと直交し、かつ主鉄筋２ａの長手方向に所定間隔おきに配筋され、ハンチ筋２ｃは鋼製壁１とＲＣ床版２との結合部に上段側の主鉄筋２ａから下段側の主筋筋２ａにかけて斜めに配筋され、その鋼製壁１側の端部は下段側の主鉄筋２ａ，２ａ間を貫通し、主鉄筋１ａの下方まで延在されている。   Further, the reinforcing bars 2b are arranged on the main reinforcing bar 2a at right angles to the main reinforcing bar 2a and at a predetermined interval in the longitudinal direction of the main reinforcing bar 2a, and the haunch reinforcing bars 2c are formed of the steel wall 1 and the RC floor slab 2. Are connected diagonally from the upper main reinforcing bar 2a to the lower main reinforcing bar 2a, and the end on the steel wall 1 side passes between the lower main reinforcing bars 2a, 2a, and the main reinforcing bar 1a. It is extended to below.

また、ハンチ筋２ｃの両端は水平に所定長さ延在され、かつ鋼製壁１側の端部は鋼製壁１に沿って所定長さ立ち上げられ、定着部になっている。なおこの場合、主鉄筋２ａ，２ａの配筋間隔がＨ形鋼５の径より小さいときは、主鉄筋２ａ，２ａの端部は図示するように水平方向に斜めに折り曲げられ、各Ｈ形鋼５の両側の空間部７，７内に挿入されている。   Further, both ends of the haunch bar 2c extend horizontally for a predetermined length, and the end portion on the steel wall 1 side is raised along the steel wall 1 for a predetermined length to form a fixing portion. In this case, when the spacing between the main reinforcing bars 2a, 2a is smaller than the diameter of the H-section steel 5, the ends of the main reinforcing bars 2a, 2a are obliquely bent in the horizontal direction as shown in the figure, 5 are inserted into the space portions 7 on both sides of the space 5.

コンクリート２ｄは主鉄筋２ａ、配力筋２ｂおよびハンチ筋２ｄが充分な被りを有してコンクリート２ｄ内に完全に埋まる厚さに打設され、特に鋼製壁１とＲＣ床版２との結合部は、構造上の弱点とならないように鋼製壁１の連続方向に延びる梁状をなすように版厚に打設されている。   The concrete 2d is cast to such a thickness that the main reinforcing bar 2a, the distribution bar 2b and the hunch bar 2d have sufficient covering and are completely buried in the concrete 2d. In particular, the connection between the steel wall 1 and the RC floor slab 2 The portion is provided with a plate thickness so as to form a beam extending in the continuous direction of the steel wall 1 so as not to be a structural weak point.

図２と図３は本発明の変形例を示し、図２の実施例の場合、鋼製壁１は両端に非対称継手４ａ，４ｂを有する土留め鋼材４とＨ形鋼５からなる組立矢板３と、非対称継手４ａ，４ｂを有する土留め鋼材４を交互に配置して構築され、また図３の実施例の場合、鋼製壁１は両端に対称継手８ａ，８ｂを有するＵ形土留め鋼材８とＨ形鋼５からなる組立矢板９とＵ形土留め鋼材８を交互に配置することにより構築されている。   2 and 3 show a modification of the present invention. In the embodiment shown in FIG. 2, the steel wall 1 is an assembly sheet pile 3 composed of a retaining steel material 4 having asymmetric joints 4a and 4b at both ends and an H-shaped steel 5. And in the case of the embodiment of FIG. 3, the steel wall 1 is a U-shaped earth retaining steel material having symmetrical joints 8a, 8b at both ends. It is constructed by alternately arranging assembly sheet piles 9 made of 8 and H-shaped steel 5 and U-shaped earth retaining steel material 8.

いずれの実施例においても、鋼製壁１がこのように構築されていることで、隣接するＨ形鋼５，５間に大きな空間部７を形成できるため、結合部における主鉄筋２ａの配筋作業が容易になる等、施工性がさらに向上する等の効果を有する。   In any embodiment, since the steel wall 1 is constructed in this way, a large space portion 7 can be formed between the adjacent H-section steels 5 and 5, so that the main reinforcing bar 2a is arranged in the joint portion. The workability is improved and the workability is further improved.

図４（ａ）〜（ｃ）は、本発明の変形例を示し、この実施例の場合、特に主鉄筋２ａのうち鋼製壁１側の端部がＨ形鋼５に突き当たるように配筋された主鉄筋２ａは、鋼製壁１側の端部を特に折り曲げないで、Ｈ形鋼５のフランジ５ａに形成された貫通孔または切欠き５ｂに貫通させ、フランジ５ａの裏側の空間部７内に直線状に定着して配筋されている。主鉄筋２ａがこのように配筋されていることで、主鉄筋２ａの統一が図られ、加工上および施工上の煩雑さを避けることができる等の効果がある。   4 (a) to 4 (c) show a modification of the present invention. In this embodiment, the bar arrangement is such that the end of the main rebar 2a on the steel wall 1 side abuts against the H-section steel 5 in particular. The formed main rebar 2a is not particularly bent at the end on the steel wall 1 side, but is penetrated through a through hole or notch 5b formed in the flange 5a of the H-section steel 5, and the space 7 on the back side of the flange 5a. It is fixed and arranged in a straight line inside. Since the main reinforcing bars 2a are arranged in this way, the main reinforcing bars 2a are unified, and there is an effect that it is possible to avoid inconveniences in processing and construction.

図５（ａ），（ｂ）は、同じく本発明の変形例を示し、この実施例の場合は、特に鋼製壁１とＲＣ床版２との結合部を含めて鋼製壁１の内側の全体にコンクリート１ａが連続して打設されている。この例では、鋼製壁１とコンクリート１ａとからなる合成壁として外力に抵抗するので、土留め壁の強度や剛性が著しく向上する。   5 (a) and 5 (b) show a modification of the present invention. In the case of this embodiment, the inner side of the steel wall 1 including the joint portion between the steel wall 1 and the RC floor slab 2 in particular. Concrete 1a is continuously placed over the entire surface. In this example, since it resists external force as a composite wall made of the steel wall 1 and the concrete 1a, the strength and rigidity of the earth retaining wall are remarkably improved.

図６（ａ），（ｂ）は、同じく本発明の変形例を示し、この実施例の場合、特に鋼製壁１とＲＣ床版２との結合部において、Ｈ形鋼５のウェブ５ｃの両側に補強鋼板９，９がそれぞれ取り付けられている。一般にＲＣ床版２が鋼製壁１に対して相対的に強度が大きい場合や、ＲＣ床版２の版厚が比較的薄い場合、ＲＣ床版２から鋼製壁１側に伝達される曲げモーメントによって鋼製壁１に大きなせん断力が生じることになるため、Ｈ形鋼５のウェブ５ｃがせん断降伏する恐れがある。本例は、このようなせん断力に対して結合部の安全性を高めた例である。   6 (a) and 6 (b) also show a modification of the present invention. In the case of this embodiment, particularly in the joint portion between the steel wall 1 and the RC floor slab 2, the web 5c of the H-section steel 5 is shown. Reinforcing steel plates 9, 9 are attached to both sides. In general, when the RC floor slab 2 is relatively strong with respect to the steel wall 1 or when the RC floor slab 2 is relatively thin, the bending transmitted from the RC floor slab 2 to the steel wall 1 side. Since a large shearing force is generated in the steel wall 1 by the moment, the web 5c of the H-section steel 5 may be shear yielded. This example is an example in which the safety of the coupling portion is increased against such a shearing force.

図７（ａ），（ｂ）は、同じく本発明の変形例を示し、この実施例の場合、鋼製壁１を構成するＨ形鋼５のウェブ５ｃにずれ止め突起１０が突設されている。このようなＨ形鋼を用いることで、結合部における応力分散が図られるため、結合部におけるコンクリートの局部的な破壊や欠け落ち等が生じにくくなり、さらに鋼製壁１と結合部コンクリートとの一体性を高めることができる。   7 (a) and 7 (b) show a modification of the present invention. In this embodiment, a detent protrusion 10 is protruded from the web 5c of the H-section steel 5 constituting the steel wall 1. Yes. By using such H-shaped steel, stress dispersion at the joint is achieved, so that local breakage or chipping of the concrete at the joint is less likely to occur, and the steel wall 1 and the joint concrete are less Unity can be increased.

なお、Ｈ形鋼５のウェブ５ｃにずれ止め突起１０を突設する方法としては、例えば丸鋼、角鋼、異形鉄筋などを溶接によって取り付ける方法、溶接ビードにより突起を付与する方法、またはＨ形鋼５の圧延製造時に一体的に形成する方法などがあり、特に圧延でずれ止め突起１０を付与する場合には、Ｈ形鋼５の全長に渡って突起を容易に形成できるため、図５（ａ），（ｂ）の実施例のように鋼製壁１の全長にコンクリートを打設して側壁を合成壁にする場合に、鋼材とコンクリートの合成度を高めるのに効果的である。   In addition, as a method of protruding the protrusion 10 on the web 5c of the H-shaped steel 5, for example, a method of attaching a round steel, a square steel, a deformed rebar, or the like by welding, a method of providing a protrusion by a weld bead, or an H-shaped steel 5 and the like. In particular, when the protrusion 10 is provided by rolling, the protrusion can be easily formed over the entire length of the H-section steel 5. ) And (b), when concrete is cast over the entire length of the steel wall 1 to make the side wall a composite wall, it is effective in increasing the degree of synthesis of the steel material and the concrete.

またずれ止め突起１０は、高さが数ｍｍ〜数十ｍｍ程度あればその機能を十分に発揮するので、土留め鋼材を地中に打ち込む前にあらかじめ工場で土留め鋼材に取り付けておいても、現場施工時の邪魔にならない。   Moreover, since the function of the retaining protrusion 10 is sufficiently exerted if the height is about several mm to several tens of mm, it is possible to attach the retaining steel material to the retaining steel material in advance in the factory before driving it into the ground. It won't get in the way during construction.

本発明は、掘削道路、あるいは基礎構造物や開削トンネル等の地中構造物の構築に際し、組立矢板からなる鋼製壁を仮設時の土留め壁として利用し、かつ地中構造物の本体構造の一部としても利用する場合に、
鋼製壁とその内側に頂版または底版として構築されたＲＣ版との結合を、結合部の簡素化などにより確実かつ迅速に行うことができる。 The present invention uses a steel wall made of an assembled sheet pile as a retaining wall during temporary construction when constructing underground structures such as excavation roads or foundation structures or open tunnels, and the structure of the underground structure When using it as part of
The steel wall and the RC plate constructed as the top plate or the bottom plate on the inside can be reliably and quickly connected by simplifying the connecting portion or the like.

本発明の第１の実施例を示し、（ａ）は横断面図、（ｂ）は縦断面図、（ｃ）は組立矢板継手部の拡大断面図である。BRIEF DESCRIPTION OF THE DRAWINGS The 1st Example of this invention is shown, (a) is a cross-sectional view, (b) is a longitudinal cross-sectional view, (c) is an expanded sectional view of an assembly sheet pile joint part. 本発明の第２の実施例を示す横断面図である。It is a cross-sectional view showing a second embodiment of the present invention. 本発明の第３の実施例を示し、（ａ）は横断面図、（ｂ）は組立矢板継手部の拡大断面図である。The 3rd Example of this invention is shown, (a) is a cross-sectional view, (b) is an expanded sectional view of an assembly sheet pile joint part. 本発明の第４の実施例を示し、（ａ）はその横断面図、（ｂ），（ｃ）は組立矢板の一例を示す斜視図である。The 4th Example of this invention is shown, (a) is the cross-sectional view, (b), (c) is a perspective view which shows an example of an assembly sheet pile. 本発明の第５の実施例を示し、（ａ）その縦断面図、（ｂ）は横断面図である。The 5th Example of this invention is shown, (a) The longitudinal cross-sectional view, (b) is a cross-sectional view. 本発明の第６の実施例を示し、（ａ）その縦断面図、（ｂ）は横断面図である。The 6th Example of this invention is shown, (a) The longitudinal cross-sectional view, (b) is a cross-sectional view. 本発明の第７の実施例を示し、（ａ）その縦断面図、（ｂ）は横断面図である。The 7th Example of this invention is shown, (a) The longitudinal cross-sectional view, (b) is a cross-sectional view. 本発明の結合構造に関する実験用供試体を示し、（ａ）その縦断面図、（ｂ）は横断面図である。The experimental specimen regarding the joint structure of this invention is shown, (a) The longitudinal cross-sectional view, (b) is a cross-sectional view. 本発明の結合構造に関する実験配置図である。It is an experimental layout regarding the coupling structure of the present invention. （ａ）は本発明の結合構造に関する実験結果を示す図、（ｂ）は載荷方法を示す図である。(A) is a figure which shows the experimental result regarding the coupling structure of this invention, (b) is a figure which shows the loading method. 本発明の結合構造に関する実験供試体の破壊状況を示す図である。It is a figure which shows the destruction condition of the test specimen regarding the connection structure of this invention. （ａ）、（ｂ）は、従来例を示す断面図である。(A), (b) is sectional drawing which shows a prior art example.

符号の説明Explanation of symbols

１ 鋼製（土留め）壁
２ ＲＣ床版（鉄筋コンクリート版
３ 組立矢板
４ ハット形鋼材（土留め鋼材）
５ Ｈ形鋼（形鋼）
６ ずれ止め
７ 空間部
８ Ｕ形鋼材
９ 補強鋼板
１０ ずれ止め突起 1 Steel (earth retaining) wall 2 RC floor slab (reinforced concrete slab 3 Assembly sheet pile 4 Hat-shaped steel (earth retaining steel)
5 H section steel (section steel)
6 Slip Stop 7 Space 8 U-Shaped Steel 9 Reinforced Steel Plate 10 Slip Stop

Claims (6)

複数の組立矢板を有する鋼製壁と鉄筋コンクリート版との結合構造であって、前記組立矢板は土留め鋼材と前記鉄筋コンクリート版側に向けて配置された形鋼とから形成されており、前記形鋼間に形成された空間部内には、前記鉄筋コンクリート版の主鉄筋の端部が挿入され、かつ前記空間部内にコンクリートが打設されてなることを特徴とする鋼製壁と鉄筋コンクリート版との結合構造。   A steel wall having a plurality of assembly sheet piles and a reinforced concrete plate combined structure, wherein the assembly sheet pile is formed from earth retaining steel and a shape steel arranged toward the reinforced concrete plate side, the shape steel In the space formed between, the end of the main reinforcing bar of the reinforced concrete plate is inserted, and the concrete is cast in the space, and the steel wall and the reinforced concrete plate are combined . 鋼製壁は、複数の組立矢板と土留め鋼材とを用いて構築されてなることを特徴とする請求項１記載の鋼製壁と鉄筋コンクリート版との結合構造。   The steel wall and the reinforced concrete plate combined structure according to claim 1, wherein the steel wall is constructed by using a plurality of assembly sheet piles and earth retaining steel. 鋼製壁と鉄筋コンクリート版との結合部において、形鋼に補強鋼板が取り付けられていることを特徴とする請求項１または２記載の鋼製壁と鉄筋コンクリート版との結合構造。   The connection structure between a steel wall and a reinforced concrete plate according to claim 1 or 2, wherein a reinforcing steel plate is attached to the shape steel at a connection portion between the steel wall and the reinforced concrete plate. 鋼製壁と鉄筋コンクリート版との結合部において、形鋼にずれ止め突起が設けられていることを特徴とする請求項１〜３のいずれかに記載の鋼製壁と鉄筋コンクリート版との結合構造。   The connection structure between the steel wall and the reinforced concrete plate according to any one of claims 1 to 3, wherein the steel plate and the reinforced concrete plate are provided with a protrusion for preventing slippage at the connection portion between the steel wall and the reinforced concrete plate. 鋼製壁の内側にコンクリートが打設されてなることを特徴とする請求項１〜４のいずれかに記載の鋼製壁と鉄筋コンクリート版との結合構造。   The joint structure of a steel wall and a reinforced concrete plate according to any one of claims 1 to 4, wherein concrete is cast inside the steel wall. 組立矢板は非対称継手を有するハット形土留め鋼材とＨ形鋼とから形成されてなることを特徴とする請求項１〜５のいずれかに記載の鋼製壁と鉄筋コンクリート版との結合構造。



The assembly structure of a steel wall and a reinforced concrete plate according to any one of claims 1 to 5, wherein the assembly sheet pile is formed of a hat-shaped earth retaining steel material having an asymmetric joint and an H-shaped steel.



JP2003408489A 2003-12-08 2003-12-08 Connection structure of steel wall and reinforced concrete slab Expired - Fee Related JP4389570B2 (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008111250A (en) * 2006-10-30 2008-05-15 Nippon Steel Corp Hat steel sheet pile having spacing part and method of stacking hat steel sheet piles
JP2012046979A (en) * 2010-08-27 2012-03-08 Kumagai Gumi Co Ltd Building foundation using earth retaining wall
US8408844B2 (en) 2006-09-05 2013-04-02 Nippon Steel & Sumitomo Metal Corporation Steel material for underground continuous wall, method for producing steel material for underground continuous wall, underground continuous wall, and method for constructing underground continuous wall
CN103669941A (en) * 2013-12-11 2014-03-26 李振中 Gate of portable storage room or underground space, or underground garage
CN104878778A (en) * 2015-06-24 2015-09-02 金陵科技学院 Aseismic strengthening structure with underground structure and strengthening method thereof
CN105386447A (en) * 2015-09-06 2016-03-09 上海建工七建集团有限公司 Construction method for replacement support of post-cast strip in construction site
CN108547631A (en) * 2018-05-22 2018-09-18 中国电建集团中南勘测设计研究院有限公司 A kind of tunnel
CN112814027A (en) * 2020-12-31 2021-05-18 上海建工五建集团有限公司 Efficient detachable combined floor system for reverse construction method and construction method
JP7321618B1 (en) * 2023-02-07 2023-08-07 株式会社シェルタージャパン Sidewall structure of underground shelter casing and method for constructing sidewall structure of underground shelter casing
JP7447879B2 (en) 2021-08-26 2024-03-12 Ｊｆｅスチール株式会社 Construction methods for steel walls, structures, and structures

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8408844B2 (en) 2006-09-05 2013-04-02 Nippon Steel & Sumitomo Metal Corporation Steel material for underground continuous wall, method for producing steel material for underground continuous wall, underground continuous wall, and method for constructing underground continuous wall
JP2008111250A (en) * 2006-10-30 2008-05-15 Nippon Steel Corp Hat steel sheet pile having spacing part and method of stacking hat steel sheet piles
JP2012046979A (en) * 2010-08-27 2012-03-08 Kumagai Gumi Co Ltd Building foundation using earth retaining wall
CN103669941A (en) * 2013-12-11 2014-03-26 李振中 Gate of portable storage room or underground space, or underground garage
CN104878778A (en) * 2015-06-24 2015-09-02 金陵科技学院 Aseismic strengthening structure with underground structure and strengthening method thereof
CN104878778B (en) * 2015-06-24 2016-08-24 金陵科技学院 The seismic reinforcing structure of underground structure and method
CN105386447A (en) * 2015-09-06 2016-03-09 上海建工七建集团有限公司 Construction method for replacement support of post-cast strip in construction site
CN108547631A (en) * 2018-05-22 2018-09-18 中国电建集团中南勘测设计研究院有限公司 A kind of tunnel
CN108547631B (en) * 2018-05-22 2024-05-07 中国电建集团中南勘测设计研究院有限公司 Tunnel
CN112814027A (en) * 2020-12-31 2021-05-18 上海建工五建集团有限公司 Efficient detachable combined floor system for reverse construction method and construction method
JP7447879B2 (en) 2021-08-26 2024-03-12 Ｊｆｅスチール株式会社 Construction methods for steel walls, structures, and structures
JP7321618B1 (en) * 2023-02-07 2023-08-07 株式会社シェルタージャパン Sidewall structure of underground shelter casing and method for constructing sidewall structure of underground shelter casing

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