JPH0219252B2 - - Google Patents
Info
- Publication number
- JPH0219252B2 JPH0219252B2 JP57233891A JP23389182A JPH0219252B2 JP H0219252 B2 JPH0219252 B2 JP H0219252B2 JP 57233891 A JP57233891 A JP 57233891A JP 23389182 A JP23389182 A JP 23389182A JP H0219252 B2 JPH0219252 B2 JP H0219252B2
- Authority
- JP
- Japan
- Prior art keywords
- construction
- underground
- block
- side block
- communication hole
- 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
- 238000010276 construction Methods 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 13
- 239000011440 grout Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 2
- 239000004567 concrete Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000009424 underpinning Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- 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〕
本発明は立杭等の潜函地下構造物、特に山留工
法と、その後の現場施工を必要とする地下構造物
をプレハブ化した製品を用いて施工する工法及び
それに使用するプレハブ地下構造物に関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention utilizes underground underground structures such as vertical piles, in particular, using the pile construction method and prefabricated products for underground structures that require subsequent on-site construction. Concerning construction methods and prefabricated underground structures used therein.
立杭やピア等の地下躯体構造物は、潜函工法に
よつて埋没されることが多い。
Underground structures such as vertical piles and piers are often buried using the submerged box method.
ここで潜函工法とは、構造物自体を地上で構築
し、あるいはプレハブ化した製品を所定の構造に
組立てた後に地下に沈埋させる工法をいう。 Here, the submerged box construction method refers to a construction method in which the structure itself is built above ground, or prefabricated products are assembled into a predetermined structure and then buried underground.
ところで潜函堀削地盤の土質によつては、安全
性との関連もあつて、失板、コルゲート又は連続
壁工法等によつて周辺地盤を保護し、更に盤周辺
の弛みや湧水等の防止対策が必要となる。これ等
の対策には、地盤改良、排水釜場、ウエルポイン
ト、及びアンダーピニング等の施工が工事の進行
に伴つて必要となり、経済性、安全性、迅速性等
に問題点を併発する。
By the way, depending on the soil quality of the excavated ground, it is necessary to protect the surrounding ground by using missing boards, corrugated walls, or continuous wall construction methods, etc., and to prevent loosening and water leakage around the board, due to safety concerns. Measures are required. These countermeasures require construction of ground improvement, drainage basins, well points, underpinning, etc. as the construction progresses, which creates problems in terms of economy, safety, speed, etc.
また躯体沈埋後の基礎構造は後打ち現場施工の
鉄筋コンクリート構造等とする必要があり、埋設
後の底版鉄筋コンクリートの施工中の湧水処理
は、通常、地下水面下における地下構造物の内部
で施工するようになるため、十分な管理の下でコ
ンクリート打込みが行えず、水密性に欠けるコン
クリートの施工となり、漏水等の欠陥を生ずるお
それを残す。該工事を矢板工法等と併用する場合
には本躯体と矢板、中梁等の所要幅を加えた敷地
面積を必要とし、加えて路上での工事に際しては
交通上のため復興板を仮置して施工を進める必要
があり、復興板の路上での使用は交通の円滑を欠
くので、短時間の工事完成が要請されている。 In addition, the foundation structure after the building frame is buried must be a reinforced concrete structure that is constructed on-site afterwards, and spring water treatment during the construction of the reinforced concrete bottom plate after burial is usually carried out inside the underground structure below the groundwater table. As a result, concrete cannot be poured under sufficient supervision, resulting in concrete that lacks watertightness, leaving the risk of defects such as water leakage. If this construction is used in conjunction with the sheet pile construction method, etc., a site area that includes the main frame and the required width of the sheet piles, center beams, etc. will be required, and in addition, when construction is carried out on the street, reconstruction boards will be temporarily placed for traffic reasons. It is necessary to proceed with the construction, and since using reconstruction boards on the road will hinder smooth traffic flow, it is requested that the construction be completed in a short time.
本発明は上記した欠点を補い安全で経済的でし
かも迅速なる作業が行える地下構造物の施工法及
びプレハブ地下構造物を提供することを目的とす
る。 SUMMARY OF THE INVENTION An object of the present invention is to provide a method for constructing an underground structure and a prefabricated underground structure that can compensate for the above-mentioned drawbacks and allow safe, economical, and quick work.
本発明は前記した目的を達成せんとするもの
で、その手は、積重ねられるプレハブ側塊内部に
設けた固定用の鋼管を用いて吸引排水し、又は排
水をしながら潜函作業及び地下構造物を構築し、
該構造物を構築中又はその後に上記鋼管を用いて
グラウト注入し、地下構造物の周囲を強固な地盤
とする地下構造物の施工法であり、また、少なく
とも四隅に連通孔が形成されたプレハブ側塊と、
上記プレハブ側塊の連通孔と連通される連通孔に
定着金具が埋没された最下部側塊と、積重ね状態
における側塊の連通孔内に挿入され、下端が上記
定着金具に螺合され、上端が最上部側塊より突出
されて排水管及びグラウト管として利用される鋼
管とより構成されるプレハブ地下構造物を要旨と
するものである。
The present invention aims to achieve the above-mentioned object, and the method is to suction and drain water using fixed steel pipes installed inside the stacked prefabricated blocks, or to carry out underground work and underground structures while draining water. build,
This is a construction method for underground structures in which grout is injected using the above-mentioned steel pipes during or after construction of the structure to create a solid ground around the underground structure, and it is also a prefabricated structure with communication holes formed in at least four corners. a lateral mass;
The lowermost block is inserted into the communication hole of the side blocks in the stacked state, and the lower end is screwed into the fixer, and the upper end The gist is a prefabricated underground structure consisting of steel pipes that protrude from the uppermost block and are used as drainage pipes and grout pipes.
以下、実施例を図面と共に説明するに第１，２
図において１〜４は平面形状が四角形若しくは多
角形に形成されたプレハブコンクリート製の側塊
にして、最下部側塊１上に上部側塊２，３，４を
順次積重したものである。
Hereinafter, the first and second embodiments will be explained with reference to the drawings.
In the figure, 1 to 4 are side blocks made of prefabricated concrete having a rectangular or polygonal planar shape, and upper blocks 2, 3, and 4 are sequentially stacked on top of the lowest block 1.
そして、最上部側塊４にはマンホール出入口孔
５ａを有する床版塊５が載架されている。 A floor slab block 5 having a manhole entrance/exit hole 5a is mounted on the uppermost block 4.
６は底版コンクリートにして、潜函工法により
最下部側塊１等が沈下した後、現場にて施工され
る。 6 will be made of concrete bottom slab and will be constructed on site after the lowest block 1 has settled using the submerged box construction method.
なお、最下部側塊１は、潜函工法による沈下時
に側塊周辺の土壌による摩擦抵抗を緩和させ、沈
下を容易にするために他の側塊２〜４よりも外壁
面に段差をつけ、土砂と側塊との摩擦力の低減を
図つている。 In addition, the lowest side block 1 has a step on the outer wall surface compared to the other side blocks 2 to 4 in order to ease the frictional resistance caused by the soil around the side block and facilitate settlement during subsidence by the submerged box construction method. This aims to reduce the frictional force between the front and side blocks.
また、各側塊１〜４の各水平接合面には、全周
に亘つて段部１ａ，２ａ，３ａが形成され、これ
に可塑性ゴム７やエポキシ樹脂を含浸したスポン
ジ８を配置し、側塊間の接着効果と漏水防止を図
つている。 In addition, step portions 1a, 2a, 3a are formed around the entire circumference on each horizontal joint surface of each of the side blocks 1 to 4, and a sponge 8 impregnated with plastic rubber 7 or epoxy resin is placed on these steps. The aim is to create an adhesive effect between the blocks and prevent water leakage.
さらに、各側塊２〜４及び床版塊５の少なくと
も四隅には垂直な連通孔１ｂ，２ｂ，３ｂ，４
ｂ，５ｂが形成されると共に最下部側塊１には最
下部に近い点で外側に開口を有する外通孔１ｃが
形成され、この外通孔１ｃにＴ型状のの定着金具
９が埋設されている。 Further, vertical communication holes 1b, 2b, 3b, 4 are provided in at least four corners of each side block 2 to 4 and the floor slab block 5.
b, 5b are formed, and an external through hole 1c having an opening on the outside at a point near the lowest part is formed in the lowest side block 1, and a T-shaped fixing fitting 9 is embedded in this external through hole 1c. has been done.
次に施工法（本実施例では地下マンホールの場
合）について説明する。 Next, the construction method (in the case of an underground manhole in this example) will be explained.
先ず、地上において、側塊１〜４を上記した如
く可塑性ゴム７やスポンジ８を介在させながら順
次積重ねる。この時、各側塊１〜４の各連通孔１
ｂ〜４ｂは各々１本の孔として連通される。 First, on the ground, the side blocks 1 to 4 are sequentially stacked with the plastic rubber 7 or sponge 8 interposed therebetween as described above. At this time, each communication hole 1 of each side mass 1 to 4
b to 4b are each communicated as one hole.
次いで最下部側塊４の各連通孔４ｂから鋼管１
０を定着金具９まで貫通し、該定着金具９の雌ネ
ジ部に鋼管１０の下端螺子部を螺合せしめると共
に、定着金具９の内部側の雌ネジ部にプラグ２０
を螺合せしめる。 Next, the steel pipe 1 is inserted from each communication hole 4b of the lowermost block 4.
0 to the fixing metal fitting 9, and screwing the lower end screw part of the steel pipe 10 into the female threaded part of the fixing metal fitting 9, and plug 20 into the internal female threaded part of the fixing metal fitting 9.
Screw them together.
また、定着金具９が埋設された最下部側塊１の
外通孔１ｃの外側に開口された部分に、フイルタ
ー１３を外側から装着する。そして、側塊の全て
が積重ねられてから最上部側塊４の連通孔４ｂか
ら突出した鋼管１０に定着板１９及びナツト１４
をもつて仮締固定し、これにより側塊１〜４を一
体化する。 Further, a filter 13 is attached from the outside to a portion opened to the outside of the external passage hole 1c of the lowermost block 1 in which the fixing metal fitting 9 is embedded. After all of the side blocks are stacked, a fixing plate 19 and a nut 14 are attached to the steel pipe 10 protruding from the communication hole 4b of the uppermost side block 4.
The side blocks 1 to 4 are thereby integrated with each other by temporary tightening.
次に鋼管１０の上部にセンターホール油圧ジヤ
ツキを挿入し、鋼管引張り強度の許容応力度範囲
で鋼管１０の緊張を行い、ナツト１４をもつて本
締めをなす。 Next, a center hole hydraulic jack is inserted into the upper part of the steel pipe 10, the steel pipe 10 is tensioned within the allowable stress range of the steel pipe tensile strength, and the nut 14 is finally tightened.
定着板１９はグラウト穴２１を有し鋼管１０の
周囲の充填に役立てる効果と鋼管１０を固定する
役目を併用する。なお、グラウト穴にはナツト２
１′締めも可能であるる（第４図）。 The fixing plate 19 has a grout hole 21 and serves both of filling the surrounding area of the steel pipe 10 and fixing the steel pipe 10. In addition, Nut 2 is installed in the grout hole.
It is also possible to tighten by 1' (Figure 4).
次いで、最下部側塊１に対せん断鉄筋を配置し
コンクリート打ち作業を行うのであるが、ここ
で、地盤周辺の弛みや湧水が生じると、十分な水
密性コンクリート打ちが行えない。 Next, shear reinforcing bars are placed on the lowermost block 1 and concreting work is carried out, but if loosening or spring water occurs around the ground, sufficient watertight concrete casting cannot be performed.
そこで本発明にあつては、上記した鋼管１０の
突出先端に真空ポンプを接続し、湧水を吸引する
方法をとる。この吸引排水にはフイルター１３に
よつて鋼管１０内がつまるようなことはない。こ
れにより、配筋やコンクリート打ちを、地下水位
下の場所においても通常の地上作業と同じような
状態の中で行うことができ、従つて、所定の構造
物の精度、品質、能率及び安全性を高めることが
できる。 Therefore, in the present invention, a method is adopted in which a vacuum pump is connected to the protruding end of the above-described steel pipe 10 to suck spring water. There is no possibility that the inside of the steel pipe 10 will be clogged by the filter 13 during this suction and drainage. This allows reinforcing and concreting to be carried out under conditions similar to normal surface work, even below the groundwater level, thereby improving the accuracy, quality, efficiency and safety of a given structure. can be increased.
そして、上記のような手段によつて底版のコン
クリート打ちの終了後で所定の強度が得られてか
ら、吸引排水管として使用した鋼管１０の突出先
端を真空ポンプから外し、今度はグラウトポンプ
に接続し、モルタルミルク等のグラウト注入を行
う。この時、フイルター１３はグラウトの圧力に
よつて外通孔１ｃより排出され、グラウトは外通
孔１ｃの開口部周囲に流出される。 After the concrete pouring of the bottom slab is completed and the specified strength is obtained by the above-mentioned means, the protruding tip of the steel pipe 10 used as the suction and drainage pipe is removed from the vacuum pump, and this time it is connected to the grout pump. Then, inject grout using mortar milk, etc. At this time, the filter 13 is discharged from the external hole 1c by the pressure of the grout, and the grout flows out around the opening of the external hole 1c.
従つて最下部側塊１の周囲及び底版底面への地
盤の弛みはグラウトによりプレパクト効果を得
て、地盤周囲を改良させて地盤沈下を十分に防止
することができる。 Therefore, the loosening of the ground around the lowermost side block 1 and the bottom surface of the bottom slab can be prepaced by grouting, and the surroundings of the ground can be improved and ground subsidence can be sufficiently prevented.
次に床版塊５を最上部側塊４の上に乗せ、上記
鋼管１０を利用し、ナツトで螺合し固定する。床
版塊５には下部側塊に対応する連通穴が設けられ
てあり、上記固定後、耐腐蝕物キヤツプを用いて
未端処理を施す。 Next, the slab block 5 is placed on top of the uppermost block 4, and screwed and fixed with nuts using the steel pipe 10. The floor slab mass 5 is provided with a communication hole corresponding to the lower side mass, and after the above-mentioned fixation, an end treatment is performed using a corrosion-resistant cap.
床版塊上は通常、人孔口環をもつて地上と接す
る。地下構造物が立坑等の場合、中梁や腹起し等
の横架材を必要とすることなく、そのまま横穴作
業若しくは推進管作業の開始が可能である。作業
終了後は構造物自体がマンホール躯体として利用
し得るので、上記床版塊及び人孔口環の設置をも
つて工事を終了させることができる。 The top of the slab usually contacts the ground with a manhole ring. If the underground structure is a shaft or the like, it is possible to start work on the side hole or propulsion pipe as is, without requiring horizontal members such as center beams or uprights. After the work is completed, the structure itself can be used as a manhole frame, so the work can be completed with the installation of the slab mass and manhole ring.
なお、側塊の施工目的が推進坑である場合には
吸引排水は推進管施工中にも続行することが可能
である。後で行うグラウト注入は、推進管周囲の
地盤沈下若しくは不動沈下の防止に寄与する。 In addition, if the purpose of construction of the side block is a propulsion shaft, suction and drainage can be continued even during the construction of the propulsion pipe. The grouting performed later contributes to preventing ground subsidence or immobility settlement around the propulsion pipe.
本発明は上記したように、積重ねた側塊の連通
孔に鋼管を挿入固定すると共に、この鋼管を利用
して地下湧水を排水することができるので、耐圧
板としての底板コンクリート工事が確実、かつ、
迅速に行え、排水作業完了後は上記鋼管を介して
グラウト注入を行い地盤改良を為し得るので、排
水やグラウトを別個の工事として行うよりも作業
時間の短縮や作業敷地面積を最少限度の範囲で施
工を容易にし、路上での交通混乱を大幅に改善す
ることができる。
As described above, the present invention allows steel pipes to be inserted and fixed into the communication holes of the stacked side blocks, and underground spring water can be drained using the steel pipes, so that concrete construction of the bottom plate as a pressure plate can be performed reliably. and,
It can be carried out quickly, and after the drainage work is completed, grout can be injected through the steel pipes mentioned above to improve the ground, so the work time can be shortened and the work site area can be minimized compared to performing drainage and grouting as separate works. This makes construction easier and can greatly reduce traffic confusion on the road.
実施例では40立方米の地下マンホールで、躯体
設置開始から48時間で床版塊まで完了させてお
り、通常１カ月乃至２カ月を要するとされる開削
工事に比較して極めて顕著な迅速性の効果を有す
る。 In this example, for a 40 cubic meter underground manhole, the slab was completed within 48 hours from the start of the frame installation, which is an extremely rapid effect compared to open excavation work, which normally takes one to two months. has.
図は本発明に係る実施例を示し、第１図は平面
図、第２図は同上の―線断面図、第３図は第
１図の―線断面図、第４図は定着金具部分の
拡大図である。
１〜４……側塊、１ｂ，２ｂ，３ｂ，４ｂ，５
ｂ……連通孔、９……定着金具、１０……鋼管。
The figures show an embodiment according to the present invention, and FIG. 1 is a plan view, FIG. 2 is a sectional view taken along the line ``-'', FIG. 3 is a sectional view taken along the ``-'' line in FIG. This is an enlarged view. 1 to 4... Side mass, 1b, 2b, 3b, 4b, 5
b...Communication hole, 9...Fixing metal fitting, 10...Steel pipe.
Claims (1)
用の鋼管を用いて吸引排水し、又は排水をしなが
ら潜函作業及び地下構造物を構築し、該構造物を
構築中又はその後に上記鋼管を用いてグラウト注
入し、地下構造物の周囲を強固な地盤とする地下
構造物の施工法。 ２ 少なくとも四隅に連通孔が形成されたプレハ
ブ側塊と、上記プレハブ側塊の連通孔と連通され
る連通孔に定着金具が埋没された最下部側塊と、
積重ね状態における側塊の連通孔内に挿入され、
下端が上記定着金具に螺合され、上端が最上部側
塊より突出されて排水管及びグラウト管として利
用される鋼管とより構成されるプレハブ地下構造
物。[Scope of Claims] 1. Suction and drainage using fixed steel pipes provided inside the stacked prefabricated side blocks, or construction of underground structures and underground structures while draining water, during or after the construction of the structures. A construction method for underground structures in which grout is injected using the above-mentioned steel pipes to create a solid foundation around the underground structure. 2. A prefab side block having communication holes formed in at least four corners, and a lowermost side block in which a fixing metal fitting is embedded in a communication hole that communicates with the communication hole of the prefab side block;
inserted into the communication hole of the side block in a stacked state,
A prefabricated underground structure comprising a steel pipe whose lower end is screwed into the fixing fitting and whose upper end protrudes from the uppermost block and is used as a drainage pipe and a grout pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57233891A JPS59122629A (en) | 1982-12-28 | 1982-12-28 | Construction of prefabricated underground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57233891A JPS59122629A (en) | 1982-12-28 | 1982-12-28 | Construction of prefabricated underground structure |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1262637A Division JPH02140329A (en) | 1989-10-07 | 1989-10-07 | Prefabricated underground structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59122629A JPS59122629A (en) | 1984-07-16 |
| JPH0219252B2 true JPH0219252B2 (en) | 1990-05-01 |
Family
ID=16962179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57233891A Granted JPS59122629A (en) | 1982-12-28 | 1982-12-28 | Construction of prefabricated underground structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59122629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155025A (en) * | 2011-03-23 | 2011-08-17 | 东南大学 | Late poured band type assembled pipe jacking working open caisson |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62248727A (en) * | 1986-04-21 | 1987-10-29 | 旭コンクリ−ト工業株式会社 | Construction method of assembling type sludge concentrating and storing tank |
| CN109137987B (en) * | 2018-09-19 | 2020-07-03 | 东阳市君泰建筑工程有限公司 | Road inspection well structure |
| CN113622442B (en) * | 2021-08-05 | 2023-01-24 | 浙江二十冶建设有限公司 | Plugging method for dewatering well |
-
1982
- 1982-12-28 JP JP57233891A patent/JPS59122629A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155025A (en) * | 2011-03-23 | 2011-08-17 | 东南大学 | Late poured band type assembled pipe jacking working open caisson |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59122629A (en) | 1984-07-16 |
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