JPH0469254B2 - - Google Patents
Info
- Publication number
- JPH0469254B2 JPH0469254B2 JP60272057A JP27205785A JPH0469254B2 JP H0469254 B2 JPH0469254 B2 JP H0469254B2 JP 60272057 A JP60272057 A JP 60272057A JP 27205785 A JP27205785 A JP 27205785A JP H0469254 B2 JPH0469254 B2 JP H0469254B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- building
- framework
- filled
- temporary
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000013505 freshwater Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 description 13
- 238000009412 basement excavation Methods 0.000 description 8
- 239000003673 groundwater Substances 0.000 description 7
- 238000009835 boiling Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005802 health problem Effects 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は大深度の施工を可能とする建築物の
多層階地下躯体の構築方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of constructing a multi-story underground frame of a building, which enables construction at great depths.
従来、施工深度が大きい場合や地下水位が高く
ヒービング、ボイリング等の恐れがある場合の地
下躯体の構築方法としては、例えば圧搾空気を用
いたニユーマチツクケーソン工法が利用されてい
る。その場合、下端の耐圧盤外周の刃口を設けた
建築物躯体を地上で順次構築するとともに、地下
水圧に対抗させるために圧気した耐圧盤下の作業
室で人力等による掘削を行ない、躯体を順次沈設
して行く方法が採られている。
Conventionally, as a method for constructing an underground framework when the construction depth is large or when the underground water level is high and there is a risk of heaving, boiling, etc., for example, the pneumatic caisson construction method using compressed air has been used. In that case, a building frame with a cutting edge on the outer periphery of the pressure plate at the lower end is constructed one after another on the ground, and excavation is carried out manually in a work room under the pressure plate, which is pressurized to counter groundwater pressure. The method used is to deposit them in stages.
しかし、ニユーマチツクケーソン工法では耐圧
盤下の作業室に送り込んだ圧搾空気による作業室
内の作業員の健康問題や作業能率の低下の問題が
ある。さらに軟弱な地盤では沈下が急に進み危険
な場合もある。
However, the pneumatic caisson construction method poses health problems for workers in the work room and reduced work efficiency due to the compressed air sent into the work room below the pressure platen. In addition, if the ground is soft, subsidence may progress rapidly and become dangerous.
また、オープンケーソン工法の場合、通常水中
掘削等により地下水圧に対処させることができる
が、大きな被水圧がある場合はヒービング、ボイ
リングが発生し、周辺地盤にも沈下等の影響を及
ぼす恐れがある。さらにオープンケーソン工法で
は各階のスラブが後施工となり、工程上影響が出
ること、またケーソン内の泥水処理が必要である
などの問題点が挙げられる。 In addition, in the case of the open caisson construction method, underground water pressure can usually be dealt with by underwater excavation, etc., but if there is large water pressure, heaving and boiling may occur, which may also affect the surrounding ground, such as subsidence. . Furthermore, with the open caisson construction method, the slabs for each floor are constructed later, which has an impact on the construction process, and there are other problems such as the need to treat muddy water inside the caisson.
この発明は上述のような問題点の解決を目的と
したものである。 This invention aims to solve the above-mentioned problems.
この発明の建築物地下躯体の構築方法では下端
の耐圧盤外周に刃口を設けたケーソン状の方形平
面で多層階の構造物躯体を地上で順次構築すると
ともに、各スラブおよび耐圧盤を貫通する筒状の
仮設ケーシングを多数箇所に設け、圧盤下および
ケーシング内に地下水圧に対抗させるための泥水
を満たして耐圧盤下を伸縮アームを有する掘削機
で機械掘削し、構造物躯体を順次沈設して行く。
ケーシングを通しての泥水中の機械掘削には、リ
バースサーキユレーシヨン方式、ベノト方式のも
のやアースドリル等の掘削機が利用できる。ま
た、躯体内部には沈設に必要な重量分の清水を満
たしておくことにより、沈設を容易にする。
In the method for constructing an underground building framework of this invention, a multi-story structure is constructed one after another on the ground with a caisson-like rectangular plane with a cutting edge provided on the outer periphery of the pressure board at the lower end, and the structure is constructed by penetrating each slab and pressure board. Temporary cylindrical casings were installed at multiple locations, and muddy water was filled under the pressure platen and inside the casing to counteract groundwater pressure.The area under the pressure platen was mechanically excavated using an excavator with a telescoping arm, and the structure frame was sequentially sunk. Go.
For mechanical excavation in muddy water through the casing, excavators such as reverse circulation type, Benoto type, and earth drill can be used. In addition, by filling the inside of the frame with fresh water equal to the weight required for sinking, it will be easier to sink.
次に、図示した実施例について説明する。 Next, the illustrated embodiment will be described.
第１図および第２図は施工状態の一例を示した
もので、図中１は方形平面で多層階の建築物の地
下躯体を示し、下端の耐圧盤２の外周には刃口３
が設けられ、また、耐圧盤２および各階のスラブ
４には円筒状の仮設ケーシング６を多数箇所に貫
通させるための貫通穴５が設けられている。図で
は省略してあるが、ケーシング６と耐圧盤２間は
水密状態とし、耐圧盤２下および仮設ケーシング
６内には地下水圧に対抗させるための泥水７を満
たす。そして伸縮アームを有する掘削機９´を仮
設ケーシング６内より耐圧盤２下に伸ばし、リバ
ースサーキユレーシヨン方式により耐圧盤２下の
掘削を行なうようにしている。掘削後、所定量の
沈設が行なわれるが、躯体２内には清水８を満た
して、その重量を沈設に利用している。 Figures 1 and 2 show an example of the construction state. In the figures, 1 shows the underground structure of a multi-story building with a rectangular plane.
In addition, through holes 5 are provided in the pressure platen 2 and the slabs 4 on each floor to allow the cylindrical temporary casing 6 to pass through them at multiple locations. Although not shown in the figure, the space between the casing 6 and the pressure platen 2 is watertight, and the area below the pressure platen 2 and inside the temporary casing 6 is filled with muddy water 7 to counteract groundwater pressure. Then, an excavator 9' having a telescoping arm is extended below the pressure platen 2 from inside the temporary casing 6, and excavation under the pressure platen 2 is performed using a reverse circulation method. After excavation, a predetermined amount of sinking is performed, and the frame 2 is filled with fresh water 8, and its weight is used for sinking.
第３図〜第５図は施工手順の一例を示したの
で、次のような手順で作業を行なう。 Since FIGS. 3 to 5 show an example of the construction procedure, the work will be carried out in the following steps.
地上にて方形断面で多層階の躯体１の刃口３
および耐圧盤２、さらにその上部を構築し、貫
通穴５には仮設ケーシング６を多数箇所に通す
（第３図参照）。 Cutting edge 3 of a multi-story frame 1 with a square cross section on the ground
The pressure platen 2 and its upper part are constructed, and temporary casings 6 are passed through the through holes 5 at many locations (see FIG. 3).
仮設ケーシング６内より掘削機９により耐圧
盤２下を掘削し、所定深さまで躯体１を沈設す
る。 An excavator 9 excavates below the pressure platen 2 from inside the temporary casing 6, and the frame 1 is sunk to a predetermined depth.
躯体１を上方へ構築し、仮設ケーシング６を
継ぎ足して、掘削、沈設を繰り返す（第４図参
照）。 Build the frame 1 upward, add the temporary casing 6, and repeat the excavation and sinking (see Figure 4).
耐圧盤２下および仮設ケーシング６内には前
述のように泥水７を満たして、地下水によるボ
イリング、ヒービングを防ぐ。また躯体２内に
は清水８を満たしておく。 The area below the pressure platen 2 and inside the temporary casing 6 is filled with muddy water 7 as described above to prevent boiling and heaving due to groundwater. Further, the inside of the frame 2 is filled with fresh water 8.
所定深度まで沈設したら、余堀部にコンクリ
ート１０を充填し、躯体２内の排水後、耐圧盤
２およびスラブ４の貫通穴５をコンクリートで
防ぐ（第５図参照）。なお、地下水による浮力
に抵抗させるため、仮設ケーシング６の穴を利
用して引抜杭１２を施工したり、
アースアンカー１１を施工することもでき
る。 After sinking to a predetermined depth, concrete 10 is filled in the excess trench, and after draining the inside of the frame 2, the through holes 5 in the pressure platen 2 and the slab 4 are blocked with concrete (see Fig. 5). In addition, in order to resist the buoyancy caused by groundwater, it is also possible to construct pull-out piles 12 or construct earth anchors 11 using the holes in the temporary casing 6.
第６図は他の施工方法の例を示したもので、
耐圧盤２下をあらかじめ円筒形に掘削し、その
後その穴部分にまわりの土砂を崩し落とすよう
にする。そして、円筒形の穴部分にたまつた土
砂はリバースサーキユレーシヨン方式、ベノト
方式あるいはアースドリル等で掘削し排出する
ことができる。なお、崩し落とす方式としては
屈曲式機械または水ジエツト、あるいはこれら
の併用工法が利用できる。 Figure 6 shows an example of another construction method.
A cylindrical excavation is made in advance under the pressure platen 2, and then surrounding earth and sand is collapsed into the hole. The earth and sand accumulated in the cylindrical hole can be excavated and discharged using a reverse circulation method, a Benoto method, an earth drill, or the like. In addition, as a method of breaking down, a bending machine, a water jet, or a combination method of these can be used.
〔発明の効果〕
方形平面で多層階建築部の耐圧盤下および躯
体の各スラブを貫通する仮設ケーシングを多数
箇所に設けその仮設ケーシング内に泥水を満た
して伸縮アームを有する機械掘削するため、泥
水により、大きな地下水圧にも対処させること
ができ、周辺地盤に沈下等の影響を与える恐れ
が少ない。[Effects of the Invention] Temporary casings are installed at many locations on a rectangular plane and penetrate under the pressure plate of a multi-story building part and through each slab of the building frame. This allows it to cope with large groundwater pressures, and there is little risk of subsidence or other effects on the surrounding ground.
多数箇所に仮設ケーシングを設け、泥水を用
いたリバースサーキユレーシヨン、ベノト方式
等の伸縮アームを有する機械掘削が利用でき、
方形平面でも全面的に効率良く掘削することが
できる。また、施工時、作業員が地下に降りる
必要がないので、安全である。また清水を荷重
とするので沈設後の地下室としのての利用が容
易である。 Temporary casings can be installed in multiple locations, reverse circulation using muddy water, mechanical excavation with a telescopic arm such as the Benoto method can be used,
It is possible to efficiently excavate the entire surface even on a rectangular plane. It is also safer because there is no need for workers to go underground during construction. Also, since it uses fresh water as a load, it can be easily used as a basement after being submerged.
ドライワークをしないため、仮設止水壁やデ
イープウエル等必要としな。また多層階の地下
躯体を管理しやすい地上で構築するので高品質
の躯体が得られる。 Since dry work is not performed, there is no need for temporary water-stop walls or deep wells. In addition, since the multi-story underground framework is constructed above ground, which is easy to manage, a high-quality framework can be obtained.
第１図はこの発明の一実施例における施工の様
子を示す縦断面図、第２図は横断面図、第３図、
第４図および第５図は施工手順を示す断面図、第
６図は他の実施例を示す断面図である。
１……躯体、２……耐圧盤、３……刃口、４…
…スラブ、５……貫通穴、６……仮設ケーシン
グ、７……泥水、８……清水、９，９´……掘削
機、１０……コンクリート、１１……アンカー、
１２……引抜杭、ａ……地下水位。
Fig. 1 is a longitudinal cross-sectional view showing the construction process in an embodiment of the present invention, Fig. 2 is a cross-sectional view, Fig. 3 is a cross-sectional view,
4 and 5 are cross-sectional views showing the construction procedure, and FIG. 6 is a cross-sectional view showing another embodiment. 1...Main body, 2...Pressure plate, 3...Blade mouth, 4...
...Slab, 5...Through hole, 6...Temporary casing, 7...Muddy water, 8...Clear water, 9,9'...Excavator, 10...Concrete, 11...Anchor,
12... Pull-out pile, a... Groundwater level.
Claims (1)
多層階の建築物躯体を地上で順次構築するととも
に、各スラブおよび耐圧盤を貫通する仮設ケーシ
ングを多数箇所に設け、前記耐圧盤下およびケー
シング内に泥水を満たして耐圧盤下を伸縮アーム
を有する掘削機で掘削し、前記建築物躯体を順次
沈設して行き、かつ沈設時、建築物躯体内部には
清水を満たしておくことを特徴とする建築物の地
下躯体構築方法。1. A multi-story building frame with a rectangular plane with a cutting edge on the outer periphery of the pressure plate at the lower end is constructed one after another on the ground, and temporary casings are installed in many places that penetrate each slab and pressure plate, and The casing is filled with muddy water, the area below the pressure platen is excavated with an excavator having an extendable arm, and the building framework is sequentially sunk, and the inside of the building framework is filled with fresh water during the sinking. A method of constructing an underground framework for a building.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60272057A JPS62133217A (en) | 1985-12-03 | 1985-12-03 | Constructing method for underground framework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60272057A JPS62133217A (en) | 1985-12-03 | 1985-12-03 | Constructing method for underground framework |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62133217A JPS62133217A (en) | 1987-06-16 |
| JPH0469254B2 true JPH0469254B2 (en) | 1992-11-05 |
Family
ID=17508503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60272057A Granted JPS62133217A (en) | 1985-12-03 | 1985-12-03 | Constructing method for underground framework |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62133217A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06193084A (en) * | 1992-12-21 | 1994-07-12 | Giken Seisakusho Co Ltd | Construction method for undeground structure |
| JP2789023B2 (en) * | 1994-12-27 | 1998-08-20 | 株式会社福田組 | Construction method of structure using pneumatic caisson method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59114333A (en) * | 1982-12-22 | 1984-07-02 | Japanese National Railways<Jnr> | Reverse excavation work in caisson work |
-
1985
- 1985-12-03 JP JP60272057A patent/JPS62133217A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59114333A (en) * | 1982-12-22 | 1984-07-02 | Japanese National Railways<Jnr> | Reverse excavation work in caisson work |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62133217A (en) | 1987-06-16 |
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