JP2001164559A - Construction method of continuous underground wall guide wall making use of l-type precast member - Google Patents

Construction method of continuous underground wall guide wall making use of l-type precast member

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Publication number
JP2001164559A
JP2001164559A JP35201499A JP35201499A JP2001164559A JP 2001164559 A JP2001164559 A JP 2001164559A JP 35201499 A JP35201499 A JP 35201499A JP 35201499 A JP35201499 A JP 35201499A JP 2001164559 A JP2001164559 A JP 2001164559A
Authority
JP
Japan
Prior art keywords
guide wall
precast member
wall
shaped precast
concrete
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP35201499A
Other languages
Japanese (ja)
Inventor
Masato Ichinose
正人 一瀬
Kanae Sawada
叶 澤田
Akio Kanamaru
明生 金丸
Minoru Nakamura
実 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kumagai Gumi Co Ltd
Original Assignee
Kumagai Gumi Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kumagai Gumi Co Ltd filed Critical Kumagai Gumi Co Ltd
Priority to JP35201499A priority Critical patent/JP2001164559A/en
Publication of JP2001164559A publication Critical patent/JP2001164559A/en
Withdrawn legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To decrease the cast of cast-in-place concrete when a guide wall of a continuous underground wall is constructed and, at the same time, to make it possible to efficiently carry out the continuous execution of the guide wall to reduce a construction period of time. SOLUTION: Excavation is carried out from the ground surface G to the base surface GB of a guide wall. Then, leveling concrete 10 with specific width is cast on the base surface GB, bed mortar 11 is placed on the surface of the leveling concrete and, at the same time, L-type precast members 1 with specific length consisting of bottom plates 1b and sheathings 1a at right angles to the bottom plates 1b are arranged on the upper surface of the leveling concrete. Then, the following L-type precast members 1 are arranged in the longitudinal direction in succession, and joint sections 2, 2 and 2 of the L-type precast members 1 are connected to each other. The arrangement and connection of the L-type precast members 1, 1... are repeated, and the guide wall W is constructed.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はL型プレキャスト部
材を用いた連続地中壁ガイドウオールの施工方法に関す
るものであり、特に、予め工場等で製作された鉄筋コン
クリート製のL型プレキャスト部材を用いた連続地中壁
ガイドウオールの施工方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a continuous underground wall guide wall using an L-shaped precast member, and more particularly to a method of using a reinforced concrete L-shaped precast member manufactured in advance in a factory or the like. The present invention relates to a method for constructing a continuous underground wall guide wall.

【0002】[0002]

【従来の技術】従来の連続地中壁ガイドウオールの施工
手順を図6により説明する。
2. Description of the Related Art A construction procedure of a conventional continuous underground wall guide wall will be described with reference to FIG.

【0003】1:ガイドウオール設置部の掘削を行う
(ステップ101) 2:ガイドウオールの基礎となる部分に均しコンクリー
トを打設する(ステップ102) 3:ガイドウオールの基線を測量して位置決めを行う
(ステップ103) 4:ガイドウオールのベースとなる部分に鉄筋を組立て
る(ステップ104) 5:ベース形成のための型枠を組立てる(ステップ10
5) 6:ベースにコンクリートを打設する(ステップ10
6) 7:ガイドウオールの側壁となる部分に鉄筋を組立てる
(ステップ107) 8:側壁形成のための型枠を組立てる(ステップ10
8) 9:ガイドウオールの上面位置を測量し、コンクリート
天端位置を決める(ステップ109) 10:側壁型枠内にコンクリートを打設する(ステップ
110) 11:打設コンクリートの養生を行う(ステップ11
1) 12:養生後、型枠を解体する(ステップ112) 13:ガイドウオール周囲の掘削部の埋め戻しを行う
(ステップ113) 14:連続地中壁構築のための作業床の築造工事を行う
(ステップ114) 尚、前記ステップ112の型枠解体後、該型枠を長手方
向に連続して形成する次の側壁のために前記ステップ1
08に転用しながら施工する。
1: Excavation of a guide wall installation portion (Step 101) 2: Casting of leveling concrete to a base portion of the guide wall (Step 102) 3: Surveying and positioning of a guide wall base line Perform (Step 103) 4: Assemble the rebar at the base portion of the guide wall (Step 104) 5: Assemble the mold for forming the base (Step 10)
5) 6: Cast concrete on the base (Step 10)
6) 7: Assemble the reinforcing bar on the side wall of the guide wall (Step 107) 8: Assemble the formwork for forming the side wall (Step 10)
8) 9: Measure the top surface position of the guide wall and determine the top position of the concrete (Step 109) 10: Pour concrete into the side wall form (Step 110) 11: Cure the poured concrete (Step 109) 11
1) 12: After curing, dismantle the formwork (Step 112) 13: Backfill the excavated area around the guide wall (Step 113) 14: Perform construction work of a working floor for continuous underground wall construction (Step 114) After the mold is dismantled in the step 112, the step 1 is carried out for the next side wall to form the mold continuously in the longitudinal direction.
The construction is carried out while diverting to 08.

【0004】[0004]

【発明が解決しようとする課題】前記ガイドウオールの
施工方法は、一打設のコンクリート範囲が長い場合、現
場打ちコンクリート特有の伸縮、膨張クラックが発生す
る恐れがあり、コンクリートの品質管理が極めて困難で
あった。又、型枠材の転用を考慮すると、コンクリート
打設スパンを略20mに分割して施工する必要があり、
連続的に施工することはできない。
According to the guide wall construction method, when the range of concrete cast in one place is long, there is a possibility that expansion and contraction cracks peculiar to cast-in-place concrete may occur, and it is extremely difficult to control the quality of concrete. Met. Also, in consideration of diversion of the formwork material, it is necessary to divide the concrete casting span into approximately 20 m and construct
It cannot be done continuously.

【0005】更に、コンクリート打設のための準備工や
コンクリート打設後の養生期間(打設後、中3日)が必
要であるため工程が延びたり、天候条件によりその施工
が左右されて工程管理が困難となる。又、この施工方法
に於ては最低、鉄筋工・型枠大工・鳶、士工の三工種が
必要となり、施工現場での混在作業が発生し、安全管理
上の調整や労務計画が複雑となる。
[0005] Further, since a preparatory work for concrete placement and a curing period after concrete placement (three days after casting) are required, the process may be extended, or the construction may be affected by weather conditions. Management becomes difficult. In addition, this construction method requires at least three types of work: rebar work, formwork carpenter, toby, and shibo, and mixed work occurs at the construction site, making adjustments in safety management and labor planning complicated. Become.

【0006】そこで、ガイドウオールを施工する際に、
現場打ちコンクリートの打設作業を大幅になくし、工種
も少なく作業性が単純化できると共に連続的に施工で
き、大幅な工期の短縮による工事費のコストダウンに寄
与する連続地中壁ガイドウオールの施工方法を得るため
に解決すべき技術的課題が生じてくるのであり、本発明
はこの課題を解決することを目的とする。
Therefore, when constructing the guide wall,
Construction of continuous underground wall guide wall that greatly reduces the need for cast-in-place concrete, reduces the number of construction steps, simplifies workability, and enables continuous construction. The technical problem to be solved arises in order to obtain the method, and the present invention aims to solve this problem.

【0007】[0007]

【課題を解決するための手段】本発明は上記目的を達成
するために提案されたものであり、地下掘削時の山留め
となる連続地中壁を建造物の周囲に構築するためのガイ
ドウオールの施工方法に於て、地表面より該ガイドウオ
ールのベース面まで掘削した後、該ベース面上に所定幅
の均しコンクリートを打設し、更にその上面に敷モルタ
ルを敷設すると共に、該敷モルタル上に底板と該底板と
直角に形成された側板からなる所定長さのL型プレキャ
スト部材を配設し、その後、次のL型プレキャスト部材
を長手方向に連続して配設し、該L型プレキャスト部材
の継手部同士を接合し、以下、長手方向に該L型プレキ
ャスト部材の配設と接合とを繰り返し行い、該ガイドウ
オールを構築していくL型プレキャスト部材を用いた連
続地中壁ガイドウオールの施工方法を提供するものであ
る。
DISCLOSURE OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object, and is intended to provide a guide wall for constructing a continuous underground wall around a building, which serves as a pier for underground excavation. In the construction method, after digging from the ground surface to the base surface of the guide wall, a leveling concrete having a predetermined width is cast on the base surface, and furthermore, a mortar is laid on the upper surface, and the mortar is laid. An L-shaped precast member having a predetermined length composed of a bottom plate and a side plate formed at right angles to the bottom plate is disposed on the top, and then the next L-shaped precast member is disposed continuously in the longitudinal direction. The joint section of the precast member is joined to each other, and thereafter, the disposition and joining of the L-shaped precast member are repeated in the longitudinal direction, and the continuous underground wall guideway using the L-shaped precast member to construct the guide wall There is provided a method of constructing Lumpur.

【0008】[0008]

【発明の実施の形態】以下、本発明の一実施の形態を図
1乃至図5に従って詳述する。図1は連続地中壁ガイド
ウオールWの施工状態を示す解説斜視図であり、図2は
該ガイドウオールWの平面図である。該ガイドウオール
Wの施工は、先ず、バックホウBで図2で示すように建
造物(図示せず)の周辺に設置される連続地中壁の構築
予定位置に沿って連続的に地表面Gから該ガイドウオー
ルWのベース面GB となる部分まで法面S,Sを付けて
掘削する。その後、図1に示すように該ベース面GB
転圧機R等で締め固めて床付け作業を行う。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is an explanatory perspective view showing the construction state of the continuous underground wall guide wall W, and FIG. 2 is a plan view of the guide wall W. The construction of the guide wall W is carried out at first from the ground surface G along the planned construction position of the continuous underground wall installed around the building (not shown) with the backhoe B as shown in FIG. slope S to a portion of the base surface G B of the guide wall W, drilling with a S. Thereafter, the bed with working compacting the base surface G B as shown in FIG. 1 rolling in intensifier R or the like.

【0009】次に、図3に示すように該ガイドウオール
Wとなる後述のL型プレキャスト部材1の底板1bを設
置するが、その際、該ベース面GB 上に均しコンクリー
ト10(高さ50mm)を水平に所定幅打設した後、該L
型プレキャスト部材1の敷設位置を測量すると共に該底
板1bの敷設位置を決定する。その後、該均しコンクリ
ート10の上部に敷モルタル11(高さ30mm)を打設
し、クレーンCで搬送されてくる該L型プレキャスト部
材1の据付け作業に備える。
[0009] Next, install the bottom plate 1b of the L-shaped precast member 1 described later becomes the guide wall W as shown in FIG. 3, where the smoothing on said base surface G B concrete 10 (height 50 mm) horizontally and with a predetermined width.
The laying position of the mold precast member 1 is measured and the laying position of the bottom plate 1b is determined. After that, a mortar 11 (height: 30 mm) is placed on the upper part of the leveling concrete 10 to prepare for the installation work of the L-shaped precast member 1 conveyed by the crane C.

【0010】該L型プレキャスト部材1は予め工場等で
品質管理されて製作された鉄筋コンクリート製のL型擁
壁用の部材を用いる。尚、該L型擁壁用の部材には一般
に水抜き用の孔が設けられるが、本発明に用いる該L型
プレキャスト部材を製作する際には、箱抜きを止めて水
抜き孔をなくする。
As the L-shaped precast member 1, a member for an L-shaped retaining wall made of reinforced concrete manufactured in advance at a factory or the like under quality control is used. The member for the L-shaped retaining wall is generally provided with a hole for draining water. However, when manufacturing the L-shaped precast member used in the present invention, the box draining is stopped to eliminate the drainage hole. .

【0011】該L型プレキャスト部材1は図3に示すよ
うに断面L型状に形成し、側板1aと底板1bの背面同
士は直角にすると共に、該側板1aの高さは1250m
m、該底板1bの幅は900mmとする。又、該側板1a
の厚さはその上部厚さ120mmから該底板1b側の厚さ
135mmとなるように内側に向けてテーパーを付け、更
に、該底板1bの厚さも該側板1a側の厚さ135mmか
ら該底板1bの先端の厚さが90mmになるように内側に
テーパーを付ける。
The L-shaped precast member 1 is formed in an L-shaped cross section as shown in FIG. 3, the back surfaces of the side plate 1a and the bottom plate 1b are perpendicular to each other, and the height of the side plate 1a is 1250 m.
m, and the width of the bottom plate 1b is 900 mm. Also, the side plate 1a
The thickness of the bottom plate 1b is tapered inward from the upper thickness of 120 mm to a thickness of 135 mm on the bottom plate 1b side, and the thickness of the bottom plate 1b is also reduced from the 135 mm thickness on the side plate 1a side to the bottom plate 1b. The inside is tapered so that the tip has a thickness of 90 mm.

【0012】一方、該L型プレキャスト部材1の断面L
型の両側面には図1に示すように、該L型プレキャスト
部材1,1同士を長手方向に接合するための継手部2,
2,2を該側板1aの側面上下に所定間隔を取った位置
と該底板1bの側面中央部近傍の位置との3箇所に設け
る。該継手部2,2,2は図4(a)に示すように該L
型プレキャスト部材1,1のコンクリート内に埋設され
ているアンカー筋16,16,16,16に溶着された
コ字型の鋼板からなり、該鋼板の中央部には継手用ボル
ト18の挿入のためのボルト孔17,17を開穿する。
又、該継手部2,2の内側には図4(b)に示すように
該継手部2,2同士を接合するための該継手用ボルト1
8及びナット19の作業スペースを確保する箱抜部1
5,15を該L型プレキャスト部材1のコンクリート打
設時に設けておく。該箱抜部15,15は、該L型プレ
キャスト部材1,1同士の接合を完了した後は、モルタ
ルを充填して埋め戻し一体化を図る。
On the other hand, the cross section L of the L-shaped precast member 1
As shown in FIG. 1, joint portions 2 for joining the L-shaped precast members 1 and 1 to each other in the longitudinal direction are provided on both side surfaces of the mold.
The bottom plates 1 and 2 are provided at three positions: a position at a predetermined interval above and below the side surface of the side plate 1a and a position near the center of the side plate 1b. As shown in FIG. 4 (a), the joints 2, 2, 2
It consists of a U-shaped steel plate welded to anchor bars 16, 16, 16, 16 embedded in the concrete of the mold precast members 1, 1 and has a central portion of the steel plate for inserting a bolt 18 for joint. The bolt holes 17 and 17 are drilled.
Also, as shown in FIG. 4B, the joint bolt 1 for joining the joints 2 and 2 is provided inside the joints 2 and 2.
Box removal part 1 to secure working space for 8 and nut 19
5 and 15 are provided when the L-shaped precast member 1 is cast into concrete. After the joining of the L-shaped precast members 1 and 1 is completed, the box blanks 15 and 15 are filled with mortar and back-filled for integration.

【0013】尚、該L型プレキャスト部材1,1同士の
該継手部2,2,2を該継手用ボルト18及び該ナット
19で締結しても接合部分に多少の隙間が生じ、地中連
続壁構築の際、安定液が逸泥する恐れがあるので、この
隙間を無くすため図3に示すように該側板1aの側面上
部から該底板1bの側面中央部近傍までの断面部に沿っ
てスポンジテープ5を貼着して間詰めを行う。
Even if the joints 2, 2, 2 of the L-shaped precast members 1, 1 are fastened with the joint bolts 18 and the nuts 19, some gaps are formed in the joints, and the underground continuous When the wall is constructed, there is a risk that the stable liquid may be lost. Therefore, as shown in FIG. 3, a sponge is formed along the cross section from the upper side of the side plate 1a to the vicinity of the center of the side surface of the bottom plate 1b to eliminate this gap. The tape 5 is adhered and trimming is performed.

【0014】又、該ガイドウオールWは、図1に示すよ
うに該敷モルタル11上に該L型プレキャスト部材1の
該底板1bを設置し、次の該L型プレキャスト部材1を
該クレーンCで搬送し、該L型プレキャスト部材1,1
同士を前記したように該継手用ボルト18及び該ナット
19で長手方向に接合していくが、該L型プレキャスト
部材1の長手方向長さが2mと長いため、接合部分の強
度が弱くなり、その補強を兼ねて図3に示すように該底
板1bの上面で、且つ、該側板1aの近傍にチャネル鋼
材からなるつなぎ材3をチャネル鋼材のウエブ部の背面
を該底板1bの上面に沿わせて、該L型プレキャスト部
材1の長手方向へ向けて設置し、該つなぎ材3側から該
L型プレキャスト部材1の該底板1bへアンカーボルト
4,4を所々に打設して該L型プレキャスト部材1,1
同士を結合する。又、該つなぎ材3は前記継手部2,
2,2の補強の他、該L型プレキャスト部材1,1の水
平方向のずれ止めにも有効に働く。
As shown in FIG. 1, the guide wall W is provided with the bottom plate 1b of the L-shaped precast member 1 on the mortar 11, and the next L-shaped precast member 1 is moved by the crane C. The L-shaped precast members 1, 1
As described above, the joint bolt 18 and the nut 19 are joined in the longitudinal direction. However, since the longitudinal length of the L-shaped precast member 1 is as long as 2 m, the strength of the joined portion is weakened. As shown in FIG. 3, a tie 3 made of a channel steel is provided on the upper surface of the bottom plate 1 b and in the vicinity of the side plate 1 a so as to reinforce the back surface of the web portion of the channel steel along the upper surface of the bottom plate 1 b. The L-shaped precast member 1 is installed in the longitudinal direction of the L-shaped precast member 1, and anchor bolts 4, 4 are driven into the bottom plate 1 b of the L-shaped precast member 1 from the joining material 3 side to place the L-shaped precast member 1. Member 1, 1
Join each other. In addition, the connecting member 3 is connected to the joint portion 2,
In addition to the reinforcement of the L-shaped precast members 1, 2, it effectively works to prevent the L-shaped precast members 1, 1 from shifting in the horizontal direction.

【0015】尚、図2に示すように、該ガイドウオール
Wの直線部分は該L型プレキャスト部材1,1を連続的
に配設して形成できるが、該ガイドウオールWのコーナ
ー部13,13…は定型の該L型プレキャスト部材1,
1…を用いては形成できない。そこで、図5に示すよう
に該コーナー部13,13…は、該L型プレキャスト部
材1の該側板1a及び該底板1bの側面へ所定長さの差
し筋アンカー7,7…を該側面に対し鉛直に200mm間
隔で打ち込み、該コーナー部13,13を現場打ちコン
クリートで接続するようにする。更に、図2に示す作業
床14との接合部12に於ても図5に示すように、該L
型プレキャスト部材1の該側板1aの天端へ所定長さの
差し筋アンカー6,6…を200mm間隔で鉛直に打ち込
むと共に、他端を該接合部12に沿うよう直角に折り曲
げて該接合部12に現場打ちコンクリート(厚さ200
mm)打設し、該作業床14との接続を可能にする。
As shown in FIG. 2, the straight portion of the guide wall W can be formed by continuously arranging the L-shaped precast members 1, 1, but the corner portions 13, 13 of the guide wall W can be formed. ... are the standard L-shaped precast members 1,
1 cannot be formed. Therefore, as shown in FIG. 5, the corner portions 13, 13... Are provided with a predetermined length of a reinforcing bar anchor 7, 7,... On the side surfaces of the side plate 1a and the bottom plate 1b of the L-shaped precast member 1. It is driven vertically at an interval of 200 mm, and the corners 13, 13 are connected by cast-in-place concrete. Further, at the joint 12 with the work floor 14 shown in FIG.
.. Of a predetermined length are vertically driven into the top end of the side plate 1a of the die precast member 1 at an interval of 200 mm, and the other end is bent at a right angle along the joint 12 to join the joint 12 Cast-in-place concrete (thickness 200
mm) to allow connection with the work floor 14.

【0016】又、該ガイドウオールWを構築する際、該
L型プレキャスト部材1,1…の片側の列を完成させた
後、前記と同様な方法によって連続地中壁の設計に従っ
て他方の列を形成する該L型プレキャスト部材1の該側
板1aを、既に設置されている該L型プレキャスト部材
1の該側板1aと所定間隔に保持しながら配設して、該
ガイドウオールWを完成させる。その後、該ガイドウオ
ールWの周囲の掘削した箇所を該転圧機Rで締め固めな
がら埋め戻すが、その際、図1に示すように該L型プレ
キャスト部材1,1間の間隔を保持するために所々に切
梁8,8…を設置して行う。
In constructing the guide wall W, after completing one row of the L-shaped precast members 1, 1,..., The other row is formed in the same manner as described above in accordance with the design of the continuous underground wall. The guide wall W is completed by disposing the side plate 1a of the L-shaped precast member 1 to be formed while maintaining the side plate 1a of the L-shaped precast member 1 already installed at a predetermined interval. Thereafter, the excavated portion around the guide wall W is backfilled while compacting with the compactor R. In this case, as shown in FIG. 1, in order to maintain a space between the L-shaped precast members 1 and 1, .. Are installed in some places.

【0017】尚、該ガイドウオールWを形成する該L型
プレキャスト部材1,1…の配設方法は、該L型プレキ
ャスト部材1,1を所定の間隔に保持して対峙させなが
ら一対ずつ配設してもよい。更に、前記したコーナー部
13,13…及び接合部12,12…の現場打ちコンク
リートの打設は、埋戻し作業後行い、最後に該作業床1
4の築造を行うようにする。又、該接合部12,12…
の現場打ちコンクリートの打設時に図3に示すように、
該ガイドウオールWの開口部に開口養生敷鋼板9を設置
のための段差を設ける。
The method of arranging the L-shaped precast members 1, 1,... Forming the guide wall W is as follows. May be. Further, the cast-in-place concrete at the corners 13, 13... And the joints 12, 12.
4 will be built. Also, the joints 12, 12,...
As shown in Fig. 3 at the time of cast-in-place concrete,
At the opening of the guide wall W, a step is provided for installing the open curing steel sheet 9.

【0018】尚、前記一実施の形態で示したL型プレキ
ャスト部材の大きさ、均しコンクリート及び敷モルタル
の厚さ等はこれに限定されるべきものではなく、該ガイ
ドウオールの設計により適宜変更される。
It should be noted that the size of the L-shaped precast member, the thickness of the leveling concrete, the thickness of the mortar and the like shown in the above-described embodiment are not limited to these, and may be changed as appropriate according to the design of the guide wall. Is done.

【0019】而して、本発明は、本発明の精神を逸脱し
ない限り種々の改変を為すことができ、そして、本発明
が該改変されたものに及ぶことは当然である。
Thus, the present invention can be variously modified without departing from the spirit of the present invention, and it goes without saying that the present invention extends to the modified ones.

【0020】[0020]

【発明の効果】以上説明したように、本発明はガイドウ
オールの構成材として予め、工場等で製作された底板と
該底板と直角に形成された側板からなるL型プレキャス
ト部材を用いたため、従来の施工現場での鉄筋、型枠、
コンクリート打設等の作業が大幅に省力化できると共
に、工種が少なくなった分、現場での混在作業が減り作
業性が単純化できる。又、L型プレキャスト部材を長手
方向に配設し、継手部同士を接合していくので、従来の
現場打ちコンクリートの養生が必要なくなり、該L型プ
レキャスト部材設置後、速かに埋め戻し作業が継続して
施工でき、工期短縮が図れる。
As described above, the present invention uses an L-shaped precast member composed of a bottom plate manufactured in a factory or the like and a side plate formed at right angles to the bottom plate as a component of the guide wall. Rebar, formwork,
Work such as concrete casting can be largely labor-saving, and the number of types of work can be reduced, so that mixed work on site can be reduced and workability can be simplified. In addition, since the L-shaped precast member is disposed in the longitudinal direction and the joints are joined together, curing of the conventional cast-in-place concrete is not required. Construction can be continued and the construction period can be shortened.

【0021】更に、現場打ちコンクリートの減少にとも
ない、型枠材としての南洋木材の使用率が低減できて地
球環境への配慮が図れる。斯くして、ガイドウオールの
構築にL型プレキャスト部材を用いることにより、急速
施工が可能となり、大幅な工期の短縮及び工事費のコス
トダウンが図れる。
Furthermore, with the decrease in cast-in-place concrete, the rate of use of South Sea wood as a form material can be reduced, and consideration for the global environment can be achieved. Thus, by using the L-shaped precast member for the construction of the guide wall, rapid construction becomes possible, and it is possible to greatly reduce the construction period and the construction cost.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施の形態を示し、連続地中壁ガイ
ドウオールの施工状態を示す解説斜視図。
FIG. 1 is an explanatory perspective view showing an embodiment of the present invention and showing a construction state of a continuous underground wall guide wall.

【図2】ガイドウオールの設置状態を示す平面図。FIG. 2 is a plan view showing an installation state of a guide wall.

【図3】図2のイ−イ断面図。FIG. 3 is a sectional view taken along a line II in FIG. 2;

【図4】(a)L型プレキャスト部材の継手部を示す平
面図。(b)図4(a)のロ−ロ断面図。
FIG. 4A is a plan view showing a joint portion of an L-shaped precast member. FIG. 4B is a cross-sectional view of FIG.

【図5】ガイドウオールのコーナー部及び作業床との接
合部の差し筋アンカーを示す斜視図。
FIG. 5 is a perspective view showing a rebar anchor at a joint of the guide wall with a corner portion and a work floor.

【図6】従来のガイドウオール施工のフローチャート
図。
FIG. 6 is a flowchart of a conventional guide wall construction.

【符号の説明】[Explanation of symbols]

1 L型プレキャスト部材 1a 側板 1b 底板 2 継手部 10 均しコンクリート 11 敷モルタル G 地表面 GB ベース面 W ガイドウオールDESCRIPTION OF SYMBOLS 1 L-type precast member 1a Side plate 1b Bottom plate 2 Joint part 10 Leveling concrete 11 Mortar G Ground surface G B Base surface W Guide wall

───────────────────────────────────────────────────── フロントページの続き (72)発明者 金丸 明生 大阪府大阪市都島区片町2丁目10番5号 株式会社熊谷組大阪支店内 (72)発明者 中村 実 大阪府大阪市都島区片町2丁目10番5号 株式会社熊谷組大阪支店内 Fターム(参考) 2D049 EA02 GE00 GE09  ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akio Kanamaru 2-10-5 Katamachi, Miyakojima-ku, Osaka City, Osaka Inside the Kumagaya Gumi Osaka Branch (72) Minoru Nakamura 2-chome Katamachi, Miyakojima-ku, Osaka, Osaka No. 10-5 F-term in Kumagaya Gumi Osaka Branch (reference) 2D049 EA02 GE00 GE09

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 地下掘削時の山留めとなる連続地中壁を
建造物の周囲に構築するためのガイドウオールの施工方
法に於て、地表面より該ガイドウオールのベース面まで
掘削した後、該ベース面上に所定幅の均しコンクリート
を打設し、更にその上面に敷モルタルを敷設すると共
に、該敷モルタル上に底板と該底板と直角に形成された
側板からなる所定長さのL型プレキャスト部材を配設
し、その後、次のL型プレキャスト部材を長手方向に連
続して配設し、該L型プレキャスト部材の継手部同士を
接合し、以下、長手方向に該L型プレキャスト部材の配
設と接合とを繰り返し行い、該ガイドウオールを構築し
ていくことを特徴とするL型プレキャスト部材を用いた
連続地中壁ガイドウオールの施工方法。
In a method for constructing a guide wall for constructing a continuous underground wall serving as a mountain retaining when excavating underground around a building, after excavating from the ground surface to a base surface of the guide wall, An equalized concrete having a predetermined width is cast on the base surface, a mortar is further laid on the upper surface thereof, and an L-shape having a predetermined length including a bottom plate and side plates formed at right angles to the bottom plate on the mortar. The precast member is disposed, and then the next L-shaped precast member is disposed continuously in the longitudinal direction, and the joints of the L-shaped precast member are joined together. A method of constructing a continuous underground wall guide wall using an L-shaped precast member, wherein the guide wall is constructed by repeatedly arranging and joining the guide wall.
JP35201499A 1999-12-10 1999-12-10 Construction method of continuous underground wall guide wall making use of l-type precast member Withdrawn JP2001164559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP35201499A JP2001164559A (en) 1999-12-10 1999-12-10 Construction method of continuous underground wall guide wall making use of l-type precast member

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP35201499A JP2001164559A (en) 1999-12-10 1999-12-10 Construction method of continuous underground wall guide wall making use of l-type precast member

Publications (1)

Publication Number Publication Date
JP2001164559A true JP2001164559A (en) 2001-06-19

Family

ID=18421198

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2001164559A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007291810A (en) * 2006-04-27 2007-11-08 Asurakku:Kk Concrete block construction method
CN106988298A (en) * 2017-04-12 2017-07-28 广东省基础工程集团有限公司 The concrete guide wall and its construction method of a kind of preset reinforcing bar of assembled
CN109137884A (en) * 2018-09-28 2019-01-04 广东水电二局股份有限公司 Cut-pff wall assembled leads wall and its construction method
JP2019190029A (en) * 2018-04-19 2019-10-31 鹿島建設株式会社 Guide wall and construction method of guide wall
CN117211302A (en) * 2023-11-09 2023-12-12 中建交通建设集团有限公司 Assembled steel-concrete guide wall and construction method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007291810A (en) * 2006-04-27 2007-11-08 Asurakku:Kk Concrete block construction method
JP4639163B2 (en) * 2006-04-27 2011-02-23 有限会社アスラック Concrete block construction method
CN106988298A (en) * 2017-04-12 2017-07-28 广东省基础工程集团有限公司 The concrete guide wall and its construction method of a kind of preset reinforcing bar of assembled
JP2019190029A (en) * 2018-04-19 2019-10-31 鹿島建設株式会社 Guide wall and construction method of guide wall
JP6999483B2 (en) 2018-04-19 2022-01-18 鹿島建設株式会社 Guide wall and how to build a guide wall
CN109137884A (en) * 2018-09-28 2019-01-04 广东水电二局股份有限公司 Cut-pff wall assembled leads wall and its construction method
CN109137884B (en) * 2018-09-28 2024-05-14 广东水电二局股份有限公司 Assembled guide wall of impervious wall and construction method thereof
CN117211302A (en) * 2023-11-09 2023-12-12 中建交通建设集团有限公司 Assembled steel-concrete guide wall and construction method thereof
CN117211302B (en) * 2023-11-09 2024-02-27 中建交通建设集团有限公司 Assembled steel-concrete guide wall and construction method thereof

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