JPH0721196B2 - Reverse construction method of underground structure - Google Patents

Reverse construction method of underground structure

Info

Publication number
JPH0721196B2
JPH0721196B2 JP62115469A JP11546987A JPH0721196B2 JP H0721196 B2 JPH0721196 B2 JP H0721196B2 JP 62115469 A JP62115469 A JP 62115469A JP 11546987 A JP11546987 A JP 11546987A JP H0721196 B2 JPH0721196 B2 JP H0721196B2
Authority
JP
Japan
Prior art keywords
floor
underground
erection
foundation
steel
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.)
Expired - Fee Related
Application number
JP62115469A
Other languages
Japanese (ja)
Other versions
JPS63280153A (en
Inventor
陽之助 保坂
Original Assignee
清水建設株式会社
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 清水建設株式会社 filed Critical 清水建設株式会社
Priority to JP62115469A priority Critical patent/JPH0721196B2/en
Publication of JPS63280153A publication Critical patent/JPS63280153A/en
Publication of JPH0721196B2 publication Critical patent/JPH0721196B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は地盤中に打設した場所打ち鉄筋コンクリート
杭を、そのまま逆打ち用の柱礎として利用する地下躯体
の逆打ち工法に関するものである。
Description: TECHNICAL FIELD The present invention relates to a method for reverse driving of an underground structure in which a cast-in-place reinforced concrete pile placed in the ground is used as it is as a pillar foundation for reverse driving.

〔従来の技術〕 従来の建物の地下躯体の逆打ち工法は、第8図に示すよ
うに、地盤1に掘削した削孔2に梁ジョイント3を設け
た鉄骨柱4を建込み、基礎部分より下の削孔にコンクリ
ートを打設して柱礎5を造成したのち、柱礎5より上方
の削孔2を一旦埋戻し、その上で第9図に示すように根
切りを行って1階の鉄骨梁6の架設を行い、更に地下階
の根切りと梁の架設を順次行って、地下躯体を完成して
いる。
[Prior Art] As shown in FIG. 8, the conventional construction method for inversion of an underground structure of a building is to construct a steel frame column 4 having a beam joint 3 in a drilled hole 2 in a ground 1, After pouring concrete into the lower hole to form the pillar foundation 5, the hole 2 above the pillar foundation 5 is once backfilled, and then root cutting is performed as shown in FIG. The steel frame beam 6 is erected, and further the basement floor is cut and the beam is erected in order to complete the underground structure.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

上記従来工法では、鉄骨柱の建込み工程と削孔の埋戻し
工程を必要とすることから、柱礎作業に手間が掛って作
業能率が上がらず、また鉄筋コンクリートの柱礎には応
用し難い問題点があった。
In the above-mentioned conventional method, since the process of constructing a steel column and the process of backfilling a hole are required, the work of the column foundation takes time and the work efficiency does not increase, and it is difficult to apply it to the column foundation of reinforced concrete. There was a point.

この発明は上記事情から考えられたものであって、その
目的は埋戻し工程を省略して、柱礎作業能率の向上を図
ることができる新たな工法を提供することにある。
The present invention has been conceived in view of the above circumstances, and an object thereof is to provide a new construction method capable of omitting the backfilling step and improving the work efficiency of the column foundation.

〔問題点を解決するための手段〕[Means for solving problems]

上記目的によるこの発明は、地盤中に掘削した削孔に、
1階及び地下階の梁ジョイント部に当る部分の周囲に鋼
管または鋼板巻きなどによる梁架設部材を設けた鉄筋か
ごを建込んだのち、その削孔にコンクリートを1階の梁
ジョイント付近まで打設して、場所打ち鉄筋コンクリー
ト杭を造成し、その場所打ち鉄筋コンクリート杭を逆打
ち用柱礎及び地下柱に利用して地下躯体を逆打ちするこ
とにより、従来の問題点を解決してなる。
This invention according to the above-mentioned object is for drilling holes in the ground,
After constructing a reinforced cage with a beam erection member such as a steel pipe or steel plate winding around the part corresponding to the beam joint on the first floor and basement floor, concrete is placed in the drilled hole up to the beam joint on the first floor Then, a cast-in-place reinforced concrete pile is created, and the cast-in-place reinforced concrete pile is used as a column foundation and a subterranean column for upsetting to invert the underground structure, thereby solving the conventional problems.

以下この発明を図示の例により更に具体的に説明する。The present invention will be described more specifically below with reference to the illustrated example.

〔実施例〕〔Example〕

第1図 地盤11に掘削され、かつ安定液を注入した所要深さの削
孔12に、鉄筋かご13を孔底から削孔上部まで建込む。こ
の鉄筋かご13には1階1F及び地下階B1、B2などの地下階
の梁ジョイント部に当る部分の周囲に、鋼管または鋼板
巻きなどによる補強リブ付きの梁架設部材14が設けてあ
り、その梁架設部材14と最下階基礎梁の床付け部の外面
には、コンクリートのかぶり防止材としてスタイロフオ
ーム15が施してある。
Fig. 1 A reinforcing bar cage 13 is erected from the bottom of the hole to the top of the drilled hole in the drilled hole 12 of the required depth, which has been excavated in the ground 11 and into which the stabilizing solution has been injected. This rebar cage 13 is provided with beam erection members 14 with reinforcing ribs such as steel pipes or steel plate windings around the portions corresponding to the beam joints on the first floor 1F and basement floors B 1 , B 2 etc. A styrofoam 15 is provided on the outer surface of the beam erection member 14 and the floor attachment portion of the lowest floor foundation beam as a concrete fogging prevention material.

第2図 次に孔底のスライムを除去したのち、鉄筋かご13の内に
トレミー管(コンクリート打設用)を挿入して、削孔底
部より1階1Fの梁架設部材14の下側までコンクリート16
を打設して場所打ちコンクリート杭17を造成する。
Fig. 2 Next, after removing the slime at the bottom of the hole, insert a tremie pipe (for concrete pouring) into the rebar cage 13 and concrete from the bottom of the hole to the underside of the beam erection member 14 on the first floor 1F. 16
The cast-in-place concrete pile 17 is constructed.

第3図 建物の各柱礎位置に場所打ちコンクリート杭17を打設し
たのち、地下の1次根切りを行って1階1Fの梁ジョイン
ト部を露出し、鉄骨梁18の架設を行う。この架設は梁架
設部材14に仮受けプレート19を取付け、その仮受けプレ
ート19に鉄骨梁18をボルト又は溶接付けして行う。
Fig. 3 After placing cast-in-place concrete piles 17 at the foundation of each pillar of the building, first underground cutting is performed to expose the beam joints on the 1st floor of the first floor, and steel beams 18 are erected. This erection is performed by attaching a temporary support plate 19 to the beam erection member 14 and bolting or welding a steel beam 18 to the temporary support plate 19.

鉄骨梁18を取付けたのち、スラブ、梁の鉄筋22の配筋を
行い、梁ジョイント部及びスラブ23のコンクリート工事
を行う。
After mounting the steel beam 18, the slab and the reinforcing bar 22 of the beam are arranged, and the concrete construction of the beam joint and the slab 23 is performed.

また梁架設部材14の上には、第6図に示すように、アン
カープレート受け鉄板20が鉄筋13aに挿通して取付けら
れ、そのアンカープレート受板20の上に地上階鉄骨柱21
がボルト締めにより連結される。
Further, as shown in FIG. 6, an anchor plate receiving iron plate 20 is attached to the beam erection member 14 by inserting it into the reinforcing bar 13a, and on the anchor plate receiving plate 20, the ground floor steel column 21
Are connected by bolting.

第4図 1階1Fのコンクリート工事が完了したならば、地下1階
B1の梁ジョイント部の下側まで地下の2次根切りを行
う。次にスタイロフオーム15を取り除いて地下1階B1の
梁架設部材14を露出させ、上記1階1Fの梁架設と同様な
工程の下に鉄骨柱18を仮受けプレート19をもって梁架設
部材14に取付ける。
Fig. 4 If the 1st floor 1F concrete construction is completed, the 1st basement floor
Underground secondary root cutting to the bottom of the beam joint of B 1 . Next, the styrofoam 15 is removed to expose the beam erection member 14 on the first basement floor B1, and the steel pillar 18 is attached to the beam erection member 14 with the temporary receiving plate 19 under the same process as the beam erection on the first floor 1F above. .

第5図 地下1階B1と同様な工程により1次根切りを行い、地下
2階B2の鉄骨梁18の架設とコンクリート工事とを行っ
て、地下1階B1のスラブ23を完成したら順次地下の途中
階の施工を同様に行い、次に最下階の基礎の下側まで最
終根切りを行う。階高が高い場合は、その間に切り梁24
を架けて根切りを行ってのち、スタイロフオーム15を除
いてアンカー鉄筋を露出させ、そのアンカー鉄筋にスラ
ブ、梁の鉄筋をジョイントし、床付けを完了してから、
最下階の基礎梁およびスラブ25と地中梁26、耐圧盤27の
鉄筋コンクリート工事を行って、地下躯体を完成する。
Performs a primary roots cut by the same process as FIG. 5 underground first floor B 1, carried out the erection and concrete construction of the underground second floor B 2 of the steel beam 18, After you have completed your first basement B 1 of the slab 23 In the same way, construct the intermediate floors of the basement in the same way, and then perform final root cutting to the bottom side of the foundation on the lowest floor. If the floor height is high, there will be 24 beams between them.
After performing root cutting by hanging, expose the anchor rebar except for Styrofoam 15, join the slab and beam rebar to the anchor rebar, and after completing flooring,
The reinforced concrete construction of the foundation beam and slab 25, the underground beam 26, and the pressure board 27 on the bottom floor is performed to complete the underground structure.

この結果、場所打ちコンクリート杭17は、床付け面より
下側が柱礎28となり、また上側は地下階柱29として利用
されることになる。
As a result, the cast-in-place concrete pile 17 is used as the pillar foundation 28 below the floor mounting surface and is used as the basement pillar 29 above.

〔発明の効果〕〔The invention's effect〕

この発明は上述のように、場所打ち鉄筋コンクリート杭
をそのまま逆打ち用柱礎として利用することから、削孔
に鉄骨柱を建込んで柱礎とする場合に不可欠な削孔の埋
戻し工程および鉄骨建方工程を省略することができ、従
来工法に比べて柱礎作業に要する時間が短くなる。
As described above, since the present invention utilizes cast-in-place reinforced concrete piles as it is as a column foundation for reverse driving, it is necessary to backfill the hole and the steel frame when the steel frame column is built into the hole to form the column foundation. The erection process can be omitted, and the time required for the pillar foundation work will be shorter than in the conventional method.

また埋戻しのための土砂の搬入もなくなり、場所打ちコ
ンクリート杭の造成から根切りの段取りもスムーズに行
えるので、地下躯体工事の期間が著しく短縮され、工費
も節減されるなどの特長を有する
In addition, since there is no need to carry in earth and sand for backfilling, and the construction of cast-in-place concrete piles and root cutting can be done smoothly, the period of underground skeleton construction is significantly shortened and the construction cost is also reduced.

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

第1図から第7図はこの発明に係る地下躯体の逆打ち工
法の1実施例を示すもので、第1図から第5図は工程説
明図、第6図は第2図における1階の梁ジョイント部分
の斜視図、第7図は地下梁取付部の配筋説明図、第8図
及び第9図は従来工法の説明図である。 11…地盤、12…削孔 13…鉄筋かご、14…梁架設部材 15…スタイロフオーム、16…コンクリート 17…場所打ちコンクリート杭 18…鉄骨梁
FIGS. 1 to 7 show an embodiment of a reverse construction method for an underground skeleton according to the present invention. FIGS. 1 to 5 are process explanatory drawings, and FIG. 6 is the first floor in FIG. FIG. 7 is a perspective view of a beam joint portion, FIG. 7 is an explanatory view of bar arrangement of an underground beam attachment portion, and FIGS. 8 and 9 are explanatory views of a conventional method. 11 ... Ground, 12 ... Drilled hole 13 ... Reinforcing cage, 14 ... Beam construction member 15 ... Styrofoam, 16 ... Concrete 17 ... Cast-in-place concrete pile 18 ... Steel beam

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】地盤中に掘削した削孔に、1階及び地下階
の梁ジョイント部に当る部分の周囲に鋼管または鋼板巻
きなどによる梁架設部材を設けた鉄筋かごを建込んでの
ち、その削孔にコンクリートを1階の梁ジョイント付近
まで打設して、場所打ち鉄筋コンクリート杭を造成し、
その場所打ち鉄筋コンクリート杭を逆打ち用柱礎及び地
下柱に利用して地下躯体を完成することを特徴とする地
下躯体の逆打ち工法。
1. A rebar cage having a beam erection member provided with a steel pipe or a steel plate winding around a portion corresponding to a beam joint portion on the first floor and a basement floor is built in a drilled hole in the ground, and then the Pour concrete into the drilled hole up to the beam joint on the first floor to create cast-in-place reinforced concrete piles,
A method for reversing an underground skeleton, characterized in that an in-situ reinforced concrete pile is used as a pillar foundation and a subterranean pillar for reverse staking to complete an underground skeleton.
JP62115469A 1987-05-12 1987-05-12 Reverse construction method of underground structure Expired - Fee Related JPH0721196B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62115469A JPH0721196B2 (en) 1987-05-12 1987-05-12 Reverse construction method of underground structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62115469A JPH0721196B2 (en) 1987-05-12 1987-05-12 Reverse construction method of underground structure

Publications (2)

Publication Number Publication Date
JPS63280153A JPS63280153A (en) 1988-11-17
JPH0721196B2 true JPH0721196B2 (en) 1995-03-08

Family

ID=14663310

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62115469A Expired - Fee Related JPH0721196B2 (en) 1987-05-12 1987-05-12 Reverse construction method of underground structure

Country Status (1)

Country Link
JP (1) JPH0721196B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04247126A (en) * 1991-02-01 1992-09-03 Kajima Corp Construction works for underground structure
JPH0559736A (en) * 1991-08-30 1993-03-09 Toda Constr Co Ltd Construction of underground structure
JPH0681354A (en) * 1992-09-04 1994-03-22 Kajima Corp Construction method for underground structural skeleton
JP2831909B2 (en) * 1993-07-09 1998-12-02 川崎製鉄株式会社 Connection structure of steel columns, piles and foundation beams
JP4568101B2 (en) * 2004-12-06 2010-10-27 株式会社竹中工務店 Pile-column connection structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4944506A (en) * 1972-09-02 1974-04-26

Also Published As

Publication number Publication date
JPS63280153A (en) 1988-11-17

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