JP2000178972A - Positioning construction method for permanent structural column - Google Patents
Positioning construction method for permanent structural columnInfo
- Publication number
- JP2000178972A JP2000178972A JP10354781A JP35478198A JP2000178972A JP 2000178972 A JP2000178972 A JP 2000178972A JP 10354781 A JP10354781 A JP 10354781A JP 35478198 A JP35478198 A JP 35478198A JP 2000178972 A JP2000178972 A JP 2000178972A
- Authority
- JP
- Japan
- Prior art keywords
- pillar
- gantry
- structural column
- permanent structural
- pit
- 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- Withdrawn
Links
Landscapes
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】この発明は、いわゆる逆打ち
工法で施工中、上部構造物を支持するために地中に設置
される構真柱の建込み工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a vertical column installed underground to support an upper structure during construction by a so-called reverse construction method.
【0002】[0002]
【従来の技術】地上から下階へと順に施工して地下階を
構築し、同時に地上階を地下階と並行して構築する逆打
ち工法では、施工中、上階部分を支持する柱として本柱
を構築する位置にH形鋼や鋼管などからなる構真柱を建
て込む。2. Description of the Related Art In a reverse striking method in which an underground floor is constructed by constructing in order from the ground to a lower floor, and at the same time the ground floor is constructed in parallel with the basement floor, the pillar is used as a pillar for supporting the upper floor during construction. A straight pillar made of H-section steel, steel pipe or the like is built at the position where the pillar is to be built.
【0003】これまで、構真柱は様々な方法で施工され
ているが、一般に、最初に本柱を構築する位置に本柱の
柱芯に合わせて竪孔を削孔し、この竪孔の底部に基礎ま
たは基礎杭を形成する。Until now, timber pillars have been constructed in various ways. In general, a pit is drilled at the position where the main pillar is to be constructed first, in accordance with the core of the main pillar. Form a foundation or foundation pile at the bottom.
【0004】そして、この竪孔に構真柱を建て込み、孔
底の基礎または基礎杭の上に固定し、かつその周囲を砂
などを充填して埋め戻す。またその際、竪孔の上端部に
建込み架台を設置し、この建込み架台を通して竪孔内に
構真柱を建て込み、建込み架台で構真柱を柱芯に合うよ
うに位置合わせを行う。[0004] Then, a trussed pillar is erected in this pit, fixed on a foundation or a foundation pile at the bottom of the pit, and the periphery thereof is filled with sand or the like and backfilled. At that time, a erection stand is installed at the upper end of the pit, and a trussed pillar is erected in the pit through this pedestal. Do.
【0005】[0005]
【発明が解決しようとする課題】しかし、このような構
真柱の建込み工法では、竪孔を掘削した後に構真柱を建
て込むため、しかも竪孔に構真柱を建て込んだ後、構真
柱の周囲を埋め戻す必要があるため必ずしも効率的な施
工ができない。However, in such a method of building a timber column, the timber column is excavated and then the timber column is built. Efficient construction is not always possible because it is necessary to backfill the perimeter of the pillar.
【0006】また、竪孔は大きめに掘削するため、構真
柱の芯合わせを正確に行うことができても、周囲を埋め
戻す際に柱芯がずれたり、傾いて鉛直精度が落ちてしま
うことがあり、また竪孔を大きめに掘削することによ
り、掘削土量が多くその処理に余計にコストがかかり、
さらに建込み架台を別に製作する必要があるため、この
点でも余計にコストが嵩む等の課題があった。In addition, since the pit is excavated to a large size, even if the alignment of the trussed pillar can be performed accurately, the pillar core is displaced or tilted when the surroundings are backfilled, and the vertical accuracy is reduced. In some cases, excavating a large pit requires a large amount of excavated soil and requires extra cost for the treatment.
Furthermore, since it is necessary to separately manufacture the mounting stand, there is a problem that the cost is further increased in this respect.
【0007】この発明は以上の課題を解決するためにな
されたもので、特に構真柱をきわめて効率的かつ高精度
に建て込めるようにした構真柱の建込み工法を提供する
ことを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a method of constructing a trussed pillar in which the trussed pillar can be built very efficiently and with high precision. I do.
【0008】[0008]
【課題を解決するための手段】以上の課題を解決するた
めに、この発明に係る請求項1記載の構真柱の建込み工
法は、所定の高さに構台を構築し、この構台を貫通して
構真柱を立設するとともに、構台下において上下方向の
少なくとも2カ所を支持し、かつ前記構真柱を位置決め
した後、地中に建て込む。According to a first aspect of the present invention, there is provided a method of constructing a straight pillar according to the present invention, comprising constructing a gantry at a predetermined height and penetrating the gantry. The trussed pillars are erected, and at least two vertical positions are supported under the gantry. After the trussed pillars are positioned, they are built in the ground.
【0009】請求項2記載の構真柱の建込み工法は、請
求項1において、構台下に伸縮自在な複数の支持アーム
を設置し、この複数の支持アームで構真柱の上下方向の
少なくとも2カ所を支持するとともに、構真柱の位置決
めを行う。According to a second aspect of the present invention, there is provided a method of constructing a straight pillar according to the first aspect, wherein a plurality of telescopic support arms are installed under the gantry, and the plurality of support arms are used to extend the vertical direction of the straight pillar. At least two places are supported, and the vertical column is positioned.
【0010】そして、請求項3記載の構真柱の建込み工
法は、請求項1または2において、構台の上に掘削機を
搭載し、この掘削機で竪孔を掘削しつつ竪孔に構真柱を
建て込む。According to a third aspect of the present invention, there is provided a method of constructing a straight pole according to the first or second aspect, wherein an excavator is mounted on a gantry, and the excavator excavates a vertical shaft. Build a pillar.
【0011】[0011]
【発明の実施の形態】図1〜図6は、この発明に係る構
真柱の建込み工法の一例を示し、図において、敷地の地
盤上に構台1が所定の高さに構築され、その上に掘削機
2が搭載されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 6 show an example of a construction method of a straight pillar according to the present invention. In the drawings, a gantry 1 is constructed at a predetermined height on the ground of a site. An excavator 2 is mounted thereon.
【0012】また、構築される建物の本柱が構築される
位置に、鋼管からなる構真柱3が構台1の床4を貫通し
て建て付けられている。図では特に外表面に複数のリブ
を有する外面突起付き鋼管が構真柱3として建て付けら
れている。なお、ここで構真柱は杭基礎となる部分をい
う。In addition, a steel column 3 made of a steel pipe is pierced through the floor 4 of the gantry 1 at a position where the main column of the building to be constructed is constructed. In the figure, in particular, a steel pipe with an outer surface projection having a plurality of ribs on the outer surface is built as the straight pillar 3. In addition, the tall pillar here means a part which becomes a pile foundation.
【0013】構真柱3は掘削機2のリーダ5に沿って鉛
直に建て付けられ、また構真柱3は構台1の床4より下
の部分が油圧などで伸縮自在な複数の支持アーム6を介
して構台1の軸組材7に四方から支持されている。The trussed column 3 is vertically built along the leader 5 of the excavator 2, and the trussed column 3 has a plurality of support arms 6 whose portions below the floor 4 of the gantry 1 are extensible by hydraulic pressure or the like. Are supported from all sides by the frame member 7 of the gantry 1 through the base.
【0014】その際、支持アーム6は構真柱3と周囲の
複数の各軸組材7間に構真柱3側から周囲の軸組材7側
に放射状にそれぞれ設置され、また構真柱3の上下方向
の少なくとも2カ所を支持するように二段以上に設置さ
れている。At this time, the support arms 6 are radially installed between the straight pillar 3 and a plurality of surrounding frame members 7 from the straight pillar 3 side to the surrounding frame member 7 side. 3 are installed in two or more stages so as to support at least two places in the vertical direction.
【0015】なお、図で支持アーム6は二段に設置され
ているが、特に構台1が高いときは三段ないしそれ以上
に設置されてもよい。また、支持アーム6は、例えば油
圧シリンダー8のピストンロッド8aの先端部に構真柱
3を真横から把持する把持リング9を突設して形成され
ている。Although the supporting arms 6 are installed in two stages in the figure, the supporting arms 6 may be installed in three stages or more especially when the gantry 1 is high. The support arm 6 is formed, for example, by protruding a holding ring 9 for holding the straight pillar 3 from right beside the piston rod 8 a of the hydraulic cylinder 8.
【0016】把持リング9は構真柱3の形状に対応して
円形または矩形状をなし、またピストンロッド8aの先
端部に取付ねじ10でねじ止めして取り付けられてい
る。その際、把持リング9は取付ねじ10を軸に上下方
向にある程度回転することにより、軸組材7の傾き等に
よる支持ーム6の水平誤差を吸収できるようになってい
る。The gripping ring 9 has a circular or rectangular shape corresponding to the shape of the straight pillar 3, and is attached to the distal end of the piston rod 8a by screwing with a mounting screw 10. At this time, the holding ring 9 is rotated to some extent in the vertical direction about the mounting screw 10 so that the horizontal error of the support arm 6 due to the inclination of the shaft assembly 7 or the like can be absorbed.
【0017】また、把持リング9はその周方向に分割し
て部品化された複数の部品9aからなり、この複数の部
品9aを連結ねじ11で互いに連結することにより円形
または矩形のリングに形成されている。なお、図では2
個の部品9aから把持リング9が形成されている。The gripping ring 9 is composed of a plurality of parts 9a divided into parts in the circumferential direction, and is formed into a circular or rectangular ring by connecting the plurality of parts 9a to each other by connecting screws 11. ing. In the figure, 2
A grip ring 9 is formed from the individual parts 9a.
【0018】掘削機2はリーダー5に沿って垂下する回
転ロッド(オーガーロッド)12とこの回転ロッド12
の先端部に掘削翼13と攪拌翼14と共回り防止翼15
をそれぞれを有し、回転ロッド12は構真柱3を貫通
し、掘削翼13と攪拌翼14は構真柱3内を貫通し、構
真柱3の下端部から突出している。The excavator 2 includes a rotating rod (auger rod) 12 hanging down along the leader 5 and the rotating rod 12.
Excavation blade 13 and stirring blade 14 and co-rotation prevention blade 15
The rotating rod 12 penetrates the straight pillar 3, and the excavating blade 13 and the stirring blade 14 penetrate the inside of the straight pillar 3 and protrude from the lower end of the straight pillar 3.
【0019】また、回転ロッド12には回転ロッド12
を構真柱3内に鉛直に支持して竪孔を鉛直に掘進できる
ように、スタビライザー16が所定間隔に突設されてい
る(図3参照)。The rotating rod 12 includes a rotating rod 12.
The stabilizers 16 are provided at predetermined intervals so as to be vertically supported in the vertical columns 3 so that the pits can be dug vertically (see FIG. 3).
【0020】なお、攪拌翼14は回転ロッド12と共に
回転して掘削翼13で掘削された掘削土と回転ロッド1
2の先端部から地中に射出されたセメントミルク等の固
化材とを攪拌・混合するものであり、また共回り防止翼
15は掘削土内に停止して掘削土の共回りを防止して掘
削土とセメントミルクとの攪拌・混合をより高めるもの
である。The stirring blade 14 rotates together with the rotary rod 12 and excavated soil excavated by the drilling blade 13 and the rotary rod 1.
2 is to stir and mix with the solidified material such as cement milk injected into the ground from the tip of 2. The anti-corotating wing 15 is stopped in the excavated soil to prevent co-rotation of the excavated soil. It enhances the stirring and mixing of excavated soil and cement milk.
【0021】また、攪拌翼14と共回り防止翼15はい
ずれも、構真柱3を貫通しその下端部が構真柱3の下端
部から所定長さ突出する回転ロッド12の先端部に取り
付けられ、また回転ロッド12の引き抜き時に構真柱3
内をスムーズに通過するように縮閉(回転ロッド12に
垂直に添わせる)するように取り付けられている。Both the stirring blade 14 and the co-rotation prevention blade 15 are attached to the tip of a rotating rod 12 that penetrates the vertical shaft 3 and whose lower end protrudes a predetermined length from the lower end of the vertical shaft 3. When the rotating rod 12 is pulled out, the shaft 3
It is attached so as to close and close (to be vertically attached to the rotating rod 12) so as to pass through the inside smoothly.
【0022】このような構成において、次にこの発明に
係る構真柱の建込み工法を順に説明する。 前記のような配備が完了したら、最初に複数の支持
アーム6を操作し、構真柱3を前後・左右に水平に適当
に動かして構真柱3の柱芯を構築される建物の本柱の柱
芯に合わせる。 次に、掘削機2を駆動し、回転ロッド12を介して
掘削翼13と攪拌翼4を回転することにより竪孔17を
掘削する。同時に、回転ロッド12の先端部から掘削土
内に固化材を射出しながら、攪拌翼14と共回り防止翼
15で固化材と掘削土を入念に攪拌・混合することによ
り竪孔17内に掘削土と固化材とからなるソイルセメン
トを形成する。In such a configuration, the construction method of the straight pillar according to the present invention will be described in order. When the above-mentioned arrangement is completed, first, the plurality of support arms 6 are operated, and the trussed pillar 3 is appropriately moved horizontally back and forth and left and right to form the pillar core of the trussed pillar 3. To the pillar core. Next, the excavator 2 is driven, and the excavation blade 13 and the stirring blade 4 are rotated via the rotating rod 12 to excavate the pit 17. At the same time, while the solidified material is injected into the excavated soil from the tip of the rotating rod 12, the solidified material and the excavated soil are carefully agitated and mixed by the stirring blade 14 and the co-rotation prevention wing 15, thereby excavating the shaft 17. A soil cement consisting of soil and solidified material is formed.
【0023】さらに、竪孔17を掘削しつつ掘削土と固
化材とを攪拌・混合しながら竪孔17内のソイルセメン
ト中に構真柱3を徐々に押し込む。その際、構真柱3を
深く建て込むときは、回転ロッド12と構真柱3を必要
数つなぐ。 こうして、構真柱3を設定位置まで建て込むことが
できたら、攪拌翼14と共回り防止翼15を縮閉する。
そして、回転ロッド12を逆回転させながら構真柱3内
を引き上げて撤去する。 また、構真柱3の建込みが完了したら、この構真柱
3の上から上階の鉄骨18を建てて地上階を構築し、同
時に地下階部分の根切り行い、地上から下階へと順に地
下階を構築する。Further, the excavated soil and the solidified material are stirred and mixed while excavating the pit 17, and the shaft 3 is gradually pushed into the soil cement in the pit 17. At this time, when the timber pillar 3 is to be built deep, the necessary number of the rotating rods 12 and timber pillars 3 are connected. When the straight pillar 3 can be erected to the set position in this way, the stirring blade 14 and the co-rotation preventing blade 15 are closed.
Then, while rotating the rotating rod 12 in the reverse direction, the inside of the vertical shaft 3 is pulled up and removed. When the construction of the pillar 3 is completed, a steel frame 18 on the upper floor is constructed from the top of the pillar 3 to construct the ground floor, and at the same time, the underground floor is cut off, and the floor is lowered from the ground to the lower floor. Build the basement floor in order.
【0024】なお、図7と図8は、ある深さに根切りし
た地盤面上で構真柱3を建て込む場合を示し、図におい
て、特に符号19は根切りした地山を保持する山留め杭
で、その他の配置は図1〜図6に図示する場合と略同じ
である。FIGS. 7 and 8 show a case where the timber pillar 3 is erected on the ground surface which is cut to a certain depth. Other arrangements of the pile are substantially the same as those shown in FIGS.
【0025】また、図9は特に、構真柱3を把持する把
持リング9の内側にベアリング20を取り付けて把持リ
ング9と構真柱3との摩擦を無くすことで、構真柱3を
竪孔17内に押し込んでスムーズに建て込めるようにし
たものである。FIG. 9 particularly shows that the bearing 20 is attached to the inside of the holding ring 9 for holding the straight pillar 3 so that the friction between the holding ring 9 and the straight pillar 3 is eliminated. It is designed to be pushed into the hole 17 so that it can be built smoothly.
【0026】[0026]
【発明の効果】この発明は以上説明した構成からなり、
特に構真柱は竪孔を掘削した後に建て込むのではなく、
竪孔の掘削と同時に建て込むので、構真柱をきわめて効
率的に建て込むことができる。The present invention has the above-described structure,
In particular, trussed pillars are not built after excavating pits,
Since it is built at the same time as the excavation of the pit, the timber pillar can be built very efficiently.
【0027】また、構真柱は構台下において、伸縮自在
な複数の支持アームで上下方向の少なくとも2カ所を支
持し、かつこの支持アームで構真柱の位置決めを行うの
で、構真柱の建付けと芯合わせをきわめて正確にかつ簡
単に行うことができる。In addition, since the truss pillar is supported under the gantry at at least two positions in the vertical direction by a plurality of telescopic support arms and the support arm positions the truss pillar, Construction and alignment can be performed very accurately and easily.
【0028】さらに、掘削土を積極的には地上に排出せ
ずに、固化材と攪拌・混合して竪孔内にソイルセメント
を形成するので、掘削土量もきわめて少なく施工費の大
幅な低減化も図れる。Further, since the excavated soil is not actively discharged to the ground, but is stirred and mixed with the solidified material to form soil cement in the pit, the amount of excavated soil is extremely small and the construction cost is greatly reduced. Can also be planned.
【図1】構真柱の建込み工法を示す側面図である。BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a side view showing a construction method of a straight pillar.
【図2】構真柱の建込み工法を示す側面図である。FIG. 2 is a side view showing a construction method of a straight pillar.
【図3】(a)〜(f)は構真柱の建込み工法の工程を
示す断面図である。3 (a) to 3 (f) are cross-sectional views showing steps of a construction method of a straight pillar.
【図4】構真柱の支持方法を示す構台下の横断面図であ
る。FIG. 4 is a cross-sectional view under a gantry showing a method of supporting a timber column.
【図5】支持アームによる構真柱の支持方法を示す構台
下の横断面図である。FIG. 5 is a cross-sectional view under a gantry showing a method of supporting a straight pillar by a support arm.
【図6】支持アームによる構真柱の支持方法を示す構台
下の横断面図である。FIG. 6 is a cross-sectional view under a gantry showing a method of supporting a straight pillar by a support arm.
【図7】構真柱の建込み工法を示す側面図である。FIG. 7 is a side view showing a construction method of a straight pillar.
【図8】構真柱の建込み工法を示す側面図である。FIG. 8 is a side view showing a construction method of a straight pillar.
【図9】他の例の支持アームによる構真柱の支持方法を
示す構台下の横断面図である。FIG. 9 is a cross-sectional view under a gantry showing a method of supporting a straight pillar by a support arm of another example.
1 構台 2 掘削機 3 構真柱 4 構台の床 5 掘削機のリーダー 6 支持アーム 7 構台の軸組材(例えば、柱など) 8 油圧シリンダー 8a ピストンロッド 9 把持リング 9a 把持リングを形成する部品 10 取付ねじ 11 取付ねじ 12 回転ロッド(オーガーロッド) 13 掘削翼 14 攪拌翼 15 共回り防止翼 16 スタビライザー 17 竪孔 18 構真柱より上階部分の鉄骨 19 山留め杭 20 ベアリング Reference Signs List 1 gantry 2 excavator 3 truss pillar 4 gantry floor 5 excavator leader 6 support arm 7 gantry frame material (for example, column) 8 hydraulic cylinder 8a piston rod 9 gripping ring 9a parts forming gripping ring 10 Mounting Screw 11 Mounting Screw 12 Rotating Rod (Auger Rod) 13 Drilling Wing 14 Stirring Wing 15 Co-rotation Prevention Wing 16 Stabilizer 17 Vertical Hole 18 Steel Structure on Upper Floor than Vertical Pillar 19 Piling Piles 20 Bearing
───────────────────────────────────────────────────── フロントページの続き (72)発明者 吉田 茂 東京都港区赤坂6丁目13番7号 株式会社 テノックス内 Fターム(参考) 2D047 AB04 2D050 AA06 CB06 CB08 EE03 EE18 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shigeru Yoshida 6-13-7 Akasaka, Minato-ku, Tokyo Tenox Co., Ltd. F-term (reference) 2D047 AB04 2D050 AA06 CB06 CB08 EE03 EE18
Claims (3)
貫通して構真柱を立設するとともに、構台下において上
下方向の少なくとも2カ所を支持し、かつ前記構真柱を
位置決めした後、地中に建て込むことを特徴とする構真
柱の建込み工法。1. A gantry is constructed at a predetermined height, a truss pillar is erected through the gantry, and at least two vertical positions are supported under the gantry. A method of constructing a straight pillar, which is built in the ground after positioning.
設置し、この複数の支持アームで構真柱の上下方向の少
なくとも2カ所を支持するとともに、構真柱の位置決め
を行うことを特徴とする請求項1記載の構真柱の建込み
工法。2. A method according to claim 1, wherein a plurality of telescopic support arms are provided under the gantry, and the plurality of support arms support at least two positions in the vertical direction of the truss pillar and position the truss pillar. The construction method of a straight pillar according to claim 1, characterized in that:
で竪孔を掘削しつつ竪孔に構真柱を建て込むことを特徴
とする請求項1または2記載の構真柱の建込み工法。3. An excavator mounted on a gantry, wherein the excavator excavates the pit and erected a trussed pillar in the pit. Construction method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10354781A JP2000178972A (en) | 1998-12-14 | 1998-12-14 | Positioning construction method for permanent structural column |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10354781A JP2000178972A (en) | 1998-12-14 | 1998-12-14 | Positioning construction method for permanent structural column |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2000178972A true JP2000178972A (en) | 2000-06-27 |
Family
ID=18439869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10354781A Withdrawn JP2000178972A (en) | 1998-12-14 | 1998-12-14 | Positioning construction method for permanent structural column |
Country Status (1)
Country | Link |
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JP (1) | JP2000178972A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6093072A (en) * | 1983-10-27 | 1985-05-24 | 株式会社東芝 | Method of detecting holiday of elevator |
JP2015014156A (en) * | 2013-07-05 | 2015-01-22 | 株式会社横山基礎工事 | Pier construction method and pile material guide structure |
JP6078196B1 (en) * | 2016-07-05 | 2017-02-08 | 仙建工業株式会社 | How to build steel columns |
CN111764511A (en) * | 2020-07-03 | 2020-10-13 | 龙太虎 | Quick locate mode center pillar structure for steel construction building |
-
1998
- 1998-12-14 JP JP10354781A patent/JP2000178972A/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6093072A (en) * | 1983-10-27 | 1985-05-24 | 株式会社東芝 | Method of detecting holiday of elevator |
JP2015014156A (en) * | 2013-07-05 | 2015-01-22 | 株式会社横山基礎工事 | Pier construction method and pile material guide structure |
JP6078196B1 (en) * | 2016-07-05 | 2017-02-08 | 仙建工業株式会社 | How to build steel columns |
CN111764511A (en) * | 2020-07-03 | 2020-10-13 | 龙太虎 | Quick locate mode center pillar structure for steel construction building |
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