JPH0511170B2 - - Google Patents
Info
- Publication number
- JPH0511170B2 JPH0511170B2 JP60297814A JP29781485A JPH0511170B2 JP H0511170 B2 JPH0511170 B2 JP H0511170B2 JP 60297814 A JP60297814 A JP 60297814A JP 29781485 A JP29781485 A JP 29781485A JP H0511170 B2 JPH0511170 B2 JP H0511170B2
- Authority
- JP
- Japan
- Prior art keywords
- formwork
- support device
- concrete
- sliding support
- underground
- 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
- 238000009415 formwork Methods 0.000 claims description 33
- 238000010276 construction Methods 0.000 claims description 10
- 238000009412 basement excavation Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 11
- 238000005273 aeration Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005553 drilling Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Description
【発明の詳細な説明】
「産業上の利用分野」
本発明は、超深層曝気層の外管（シヤフト）等
の地中深くに埋設される縦型筒状構造物の施工法
に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method of constructing a vertical cylindrical structure buried deep underground, such as an outer pipe (shaft) of an ultra-deep aeration layer.
近年、有機系廃水の処理に、第４図に示す超深
層曝気法が採用されている。図において、イは、
超深層曝気槽を構成する地中深く埋設した外管、
ロは、該外管に内装されている小径の内管、ハ
は、汚水入口、ニは、処理水出口、ホは、返送汚
水入口、ヘは、内管へ処理用空気を、外管へ循環
開始用空気を供給するコンプレツサである。 In recent years, the ultra-deep aeration method shown in Figure 4 has been adopted for the treatment of organic wastewater. In the figure, A is
Outer pipes buried deep underground that make up the ultra-deep aeration tank,
B is a small-diameter inner pipe built into the outer pipe, C is sewage inlet, D is treated water outlet, E is return sewage inlet, F is air for processing to the inner pipe and to the outer pipe. This is a compressor that supplies air for starting circulation.
この超深層曝気法は、生物学的処理方法であ
り、従来の活性汚泥法に比較して、
(1) 敷地面積が少ない。 This ultra-deep aeration method is a biological treatment method, and compared to the conventional activated sludge method, (1) it requires less site area;
(2) 酸素利用効率が高い。(2) High oxygen utilization efficiency.
(3) 高濃度有機排水の処理が可能。(3) Possible to treat highly concentrated organic wastewater.
(4) 汚泥発生量が少ない。(4) Less sludge generation.
(5) 臭気の発生が少ない。(5) Low odor generation.
などの特長を有しており、適用分野も、下水処
理、団地等の生活廃水処理、一般産業廃水、屎尿
処理、中水施設などと幅広く、今後の需要増が見
込まれている。また、この場合、超深層曝気槽
は、直径３〜６ｍ、深さ50〜150ｍの外管を地下
に建造する必要から、品質、経済性等の面で優れ
た施工法が望まれている。It has the following characteristics, and its application fields are wide-ranging, including sewage treatment, domestic wastewater treatment in housing complexes, general industrial wastewater, human waste treatment, gray water facilities, etc., and demand is expected to increase in the future. Further, in this case, since the ultra-deep aeration tank requires an outer pipe with a diameter of 3 to 6 m and a depth of 50 to 150 m to be constructed underground, a construction method that is excellent in terms of quality, economy, etc. is desired.
本発明は、斯様な要望に応えるものであり、安
全かつ短期間に建造する施工法である。 The present invention responds to such demands and is a construction method that allows construction to be carried out safely and in a short period of time.
「従来の技術」
従来、上記外管を地下に建造する場合、第５図
に示すように、地下掘削後、その掘削孔ａへ所定
長さの鋼管ｂ……を地上で接続しながら挿入して
構築するか、又は、第６図に示すように、地下掘
削後、その掘削孔ａへ円筒状のPCaユニツトｃ…
…を次々に落し込み、底部から積み上げて構築す
る方法がとられている。``Prior art'' Conventionally, when constructing the above-mentioned outer pipe underground, as shown in Fig. 5, after underground excavation, a steel pipe b of a predetermined length is inserted into the excavated hole a while connecting it above ground. Alternatively, as shown in Fig. 6, after underground excavation, a cylindrical PCa unit c...
The method used is to drop ... one after another and build up from the bottom.
「発明が解決しようとする問題点」 しかし、前者は、 鋼製のため不経済である。"The problem that the invention attempts to solve" However, the former is It is uneconomical because it is made of steel.
腐蝕の進行など耐久性が低い。 Durability is low due to progress of corrosion.
などの欠点があり、後者の場合、
地下で接続するため接合部の品質確保が難し
い（水密性、強度）。In the latter case, it is difficult to ensure the quality of the joint (watertightness, strength) because it is connected underground.
大口径の場合、大型揚重機を必要とする。 If the diameter is large, a large lifting machine is required.
PCaユニツトと掘削土砂との隙間が残り、不
安定である。 A gap remains between the PCa unit and the excavated soil, making it unstable.
などの欠点がある。There are drawbacks such as.
本発明は、斯る欠点を一掃し、より優れた工法
を提供しようとするものである。 The present invention aims to eliminate these drawbacks and provide a more excellent construction method.
「問題点を解決するための手段」
本発明は、地下掘削後、その掘削孔へ薄鋼板、
合成樹脂薄板等の薄板から成る筒状の型枠を挿入
して設置し、また、該型枠内に昇降自在な滑動支
持装置を挿入して、該滑動支持装置により型枠を
内側で支えつつこれに対応する型枠の外側へコン
クリートを打設し硬化させ、次いで、その滑動支
持装置を一段上昇させて同様にしてコンクリート
を打継ぎすることを特徴とする。"Means for Solving the Problems" The present invention provides that after underground excavation, a thin steel plate is inserted into the excavation hole.
A cylindrical formwork made of a thin plate such as a thin synthetic resin plate is inserted and installed, and a sliding support device that can be raised and lowered is inserted into the formwork, and the formwork is supported inside by the sliding support device. The method is characterized in that concrete is cast outside the corresponding formwork and allowed to harden, then the sliding support device is raised one step and the concrete is poured in the same manner.
「作用」
如上の施工により、型枠と現場打ちコンクリー
トとで一体となつた構造躯体の迅速な構築が可能
となる。``Operation'' The construction described above makes it possible to quickly construct a structural frame that integrates formwork and cast-in-place concrete.
「実施例」
第１図乃至第３図は、本発明の実施例を示して
いる。Embodiment FIGS. 1 to 3 show an embodiment of the present invention.
第１図は、施工の手順を示すものであり、これ
をその順序にしたがつて説明すると、次の通りで
ある。 FIG. 1 shows the construction procedure, which will be explained in the following order.
まず、掘削工事を行つて、地下に直径３〜６
ｍ、深さ50〜150ｍの掘削孔Ａを形成し、該掘
削孔内に泥水Ｂを満す。 First, excavation work is carried out, and a diameter of 3 to 6 mm is underground.
A drilling hole A with a depth of 50 to 150 m is formed, and muddy water B is filled in the drilling hole.
他方で、その掘削孔に適合する径と適宜長さ
の円筒状で薄鋼板から成る複数の型枠ユニツト
１……を造り、これらの型枠ユニツトには、外
周に多数のスタツドジベル１１……を突設す
る。ただし、第１段目の型枠ユニツトは有底に
成形する。また、型枠ユニツトの周りに装備さ
せる適宜長さの籠状の鉄筋ユニツト２……を相
当数造り、これらの鉄筋ユニツトを各型枠ユニ
ツトの周りに取り付ける。 On the other hand, a plurality of cylindrical formwork units 1 made of thin steel plates with diameters and lengths suitable for the excavated hole are made, and a large number of stud dowels 11 are attached to the outer periphery of these formwork units. To protrude. However, the first stage formwork unit is formed with a bottom. Also, a considerable number of cage-like reinforcing bar units 2 of appropriate lengths are made to be installed around the formwork units, and these reinforcing bar units are attached around each formwork unit.
次に、掘削孔Ａの周りで地上に作業架台Ｃを
設置する。また、有底の第１段目の型枠ユニツ
ト１から掘削孔Ａへ挿入し、泥水Ｂによる浮力
で重量を支えつつ作業架台Ｃに一時支持させて
その上に上段の型枠ユニツトを連結すると共
に、その周りの鉄筋ユニツトを相互に接合し、
型枠ユニツト内に注水して浮力を下げ、掘削孔
Ａ内へ沈降させる。なお、型枠ユニツト相互の
連結には、第２図に示すように、内面に当金１
２を設けて、溶接１３するとよい。 Next, a work platform C is installed on the ground around the excavation hole A. In addition, the bottomed first-stage formwork unit 1 is inserted into the excavation hole A, and while the weight is supported by the buoyancy of the muddy water B, it is temporarily supported on the work platform C, and the upper-stage formwork unit is connected thereon. At the same time, the surrounding reinforcing bars are connected to each other,
Water is injected into the formwork unit to lower the buoyancy and cause it to settle into the borehole A. In addition, to connect the formwork units to each other, as shown in Fig.
It is preferable to provide 2 and weld 13.
以下同様に、次々に型枠ユニツトと鉄筋ユニ
ツトとを連結しては挿入沈降させ、所定位置に
設置し、型枠１0と鉄筋籠２0を完成する。 Thereafter, in the same manner, the formwork units and reinforcing bar units are successively connected, inserted and lowered, and installed at predetermined positions to complete the formwork 10 and reinforcing bar cage 20 .
続いて、その型枠１0内に昇降自在な滑動支
持装置３を底まで挿入し、該滑動支持装置によ
り型枠の下部を内側で支えつつ、型枠の外側へ
トレミー管Ｄを差し込んで型枠下部へコンクリ
ート４を打設し、硬化させる。次いで、その滑
動支持装置を一段上昇させて同様にしてコンク
リートを打継ぎし、以下これを繰返して型枠１
０、鉄筋籠２0及びコンクリート４が一体となつ
た躯体を構築する。なお、滑動支持装置は、コ
ンクリート側圧を支持するものであり、薄鋼板
が側圧に耐える場合には不要である。また、コ
ンクリート打設速度が遅い場合、側圧が小さい
ため、滑動支持装置は不要である。 Next, the slide support device 3, which can be raised and lowered, is inserted into the formwork 10 to the bottom, and while the lower part of the formwork is supported inside by the slide support device, the tremie pipe D is inserted to the outside of the formwork, and the mold is finished. Concrete 4 is placed at the bottom of the frame and allowed to harden. Next, the sliding support device is raised one step, concrete is poured in the same way, and this process is repeated to formwork 1.
0 , reinforcing steel cage 20 , and concrete 4 are integrated to construct a frame. Note that the sliding support device supports the concrete lateral pressure, and is not necessary when the thin steel plate can withstand the lateral pressure. Further, when the concrete placement speed is slow, the lateral pressure is small, so a sliding support device is not necessary.
「発明の効果」
本発明によれば、薄板の型枠と現場打ちコンク
リートとで槽の躯体を構成するので止水性、仕上
り精度の高い躯体を建造でき、型枠は現場打ちコ
ンクリートと一体になつて躯体を構成するので、
型枠費を削減でき、薄板の型枠を使用するので、
重量的に問題がなく、大型揚重機が不要である。"Effects of the Invention" According to the present invention, since the frame of the tank is constructed from thin plate formwork and cast-in-place concrete, it is possible to construct a frame with high water-stopping properties and high finishing accuracy, and the formwork is integrated with the cast-in-place concrete. The structure is made up of
Formwork costs can be reduced and thin plate formwork is used, so
There is no problem with weight, and large lifting equipment is not required.
また、全ての作業を地上で行えるので、安全性
を確保でき、更に、型枠の工場生産が可能であ
り、斯る型枠の生産と現場作業との複合化工法で
あるため、工期の短縮、省力化が図れ、鋼製とほ
ぼ同一性能を確保できると共に、コストダウンを
図れる。加えて、超深層曝気槽のみならず、大口
径中空抗、縦型地中自動倉庫の構造躯体等にも適
用でき皹る有益である。 In addition, since all work can be done on the ground, safety can be ensured.Furthermore, the formwork can be produced in a factory, and as it is a combined construction method that combines formwork production and on-site work, the construction period can be shortened. , it is possible to save labor, ensure almost the same performance as steel, and reduce costs. In addition, it is advantageous because it can be applied not only to ultra-deep aeration tanks, but also to large-diameter hollow shafts, structural frames of vertical underground automatic warehouses, etc.
第１図乃至第３図は、本発明の実施例を示し、
第１図は、工程説明図、第２図は、型枠の接合部
の拡大断面図、第３図は、完成躯体の一部の拡大
断面図、第４図は、超深層曝気法の説明図、第５
図、第６図は、それぞれ従来の施工法を示す説明
図である。
１……型枠ユニツト、２……鉄筋ユニツト、１
０……型枠、２0……鉄筋籠、３……滑動支持装
置、４……コンクリート、１１……スタツドジベ
ル、１２……当金、１３……溶接、Ａ……掘削
孔、Ｂ……泥水、Ｃ……作業架台、Ｄ……トレミ
ー管。
1 to 3 show embodiments of the present invention,
Figure 1 is an explanatory diagram of the process, Figure 2 is an enlarged sectional view of the joint of the formwork, Figure 3 is an enlarged sectional view of a part of the completed structure, and Figure 4 is an explanation of the ultra-deep aeration method. Figure, 5th
6 are explanatory diagrams showing conventional construction methods, respectively. 1... Formwork unit, 2... Rebar unit, 1
0 ... Formwork, 2 0 ... Rebar cage, 3... Sliding support device, 4... Concrete, 11... Stud dowel, 12... Welding, 13... Welding, A... Drilling hole, B... Muddy water, C...work platform, D...tremie pipe.
Claims (1)
薄板等の薄板から成る筒状の型枠を挿入して設置
し、また、該型枠内に昇降自在な滑動支持装置を
挿入して、該滑動支持装置により型枠を内側で支
えつつこれに対応する型枠の外側へコンクリート
を打設し硬化させ、次いで、その滑動支持装置を
一段上昇させて同様にしてコンクリートを打継ぎ
することを特徴とする地下縦型筒状構造物の施工
法。1. After underground excavation, insert and install a cylindrical formwork made of thin plates such as thin steel plates and synthetic resin sheets into the excavation hole, and insert a sliding support device that can be raised and lowered into the formwork, While supporting the formwork on the inside with the sliding support device, concrete is cast and hardened on the outside of the corresponding formwork, and then the sliding support device is raised one step and the concrete is poured in the same way. A construction method for underground vertical cylindrical structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60297814A JPS62153422A (en) | 1985-12-25 | 1985-12-25 | Construction of underground vertical type cylindrical structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60297814A JPS62153422A (en) | 1985-12-25 | 1985-12-25 | Construction of underground vertical type cylindrical structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62153422A JPS62153422A (en) | 1987-07-08 |
| JPH0511170B2 true JPH0511170B2 (en) | 1993-02-12 |
Family
ID=17851504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60297814A Granted JPS62153422A (en) | 1985-12-25 | 1985-12-25 | Construction of underground vertical type cylindrical structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62153422A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0726405B2 (en) * | 1986-06-26 | 1995-03-22 | 株式会社熊谷組 | Method for constructing hollow concrete structure in the ground |
-
1985
- 1985-12-25 JP JP60297814A patent/JPS62153422A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62153422A (en) | 1987-07-08 |
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