JPS6335909A - Precast pressure-resistant waterway tunnel - Google Patents
Precast pressure-resistant waterway tunnelInfo
- Publication number
- JPS6335909A JPS6335909A JP61177590A JP17759086A JPS6335909A JP S6335909 A JPS6335909 A JP S6335909A JP 61177590 A JP61177590 A JP 61177590A JP 17759086 A JP17759086 A JP 17759086A JP S6335909 A JPS6335909 A JP S6335909A
- Authority
- JP
- Japan
- Prior art keywords
- side plates
- tunnel
- bottom plate
- steel material
- parts
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 51
- 239000010959 steel Substances 0.000 claims abstract description 51
- 239000000463 material Substances 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 238000009412 basement excavation Methods 0.000 description 4
- 239000011440 grout Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000010248 power generation 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
この発明は、例えば水力発電における導水路とシテ用い
られるプレキャスト製圧力水路トンネルに関するもので
、プレストレスが与えられて壁厚が薄く、小形、軽量で
、しかも工場におけるブレキャスト製であるためにコス
トが安く品質も安定していて、取扱いに便利な圧力トン
ネルを提案するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a precast pressure water tunnel used as a headrace in hydroelectric power generation, for example, and is prestressed, has a thin wall thickness, is small in size, This project proposes a pressure tunnel that is lightweight, made of factory-precast material, low cost, stable quality, and convenient to handle.
(従来の技術)
従来の圧力トンネルは、地山の坑道内に型枠を組込んで
現場打ち工法によって造型するものであシ、土圧及び内
水圧によって壁部表面にひび割れが発生し易く、漏水の
原因となっている。(Prior art) Conventional pressure tunnels are built using a cast-in-place method by incorporating formwork into a tunnel in the ground, and cracks are likely to occur on the wall surface due to earth pressure and internal water pressure. This causes water leakage.
かかるひび割れを防止するために、プレストレスを導入
したものがあるが、やはり現場打ちであるため、壁厚が
厚くなり勝ちであって坑道の掘削断面積が大きくなシ、
しかも、型枠の組込みに必要な作業空間の分だけ、掘削
断面積は−そう大きくなり、又、坑道内のため、長い養
生期間を必要とするなどの問題がある。In order to prevent such cracks, pre-stressing has been introduced, but since it is cast in place, the walls tend to be thicker and the cross-sectional area of the tunnel excavated is large.
Moreover, the cross-sectional area of the excavation becomes much larger due to the working space required for assembling the formwork, and since it is located inside a tunnel, there are problems such as a long curing period being required.
(発明が解決しようとする問題点)
この発明は、現場打ちのために壁厚を薄くすることがむ
つかしく、坑道の掘削断面積が犬きくなシ勝ちで、しか
も、所定の強度を確保するまでに長時間の養生を要する
など、上述した従来の問題点を解決して、壁厚が薄くて
済み、坑道の掘削断面積が小さくできてひび割れの発生
が無く、軽量でコストの低摩な圧力トンネルを提案する
ものである。(Problems to be Solved by the Invention) This invention solves the problem that it is difficult to reduce the wall thickness for on-site casting, and the cross-sectional area of the excavation of the tunnel is difficult. This solves the above-mentioned conventional problems, such as requiring long curing times, and allows the wall thickness to be thin, reducing the cross-sectional area of the tunnel excavation, eliminating the occurrence of cracks, and creating a lightweight, low-cost, low-friction pressure system. It proposes a tunnel.
(問題点を解決するだめの手段)
上記問題点を解決するためにこの発明は次の技術手段を
講じた。(Means for solving the problem) In order to solve the above problem, the present invention takes the following technical means.
即ち、予め造型された底板3と、多数の左右側板6,6
とからなり、左右側板6の基部5は底板3の左右部2に
接合されると共に、左右側板6の上部4は互に合接され
てアーチ状に形成されるように設けてあり、上記上部4
の合接部分及び左右部2の少なくとも一方の接合部分を
貫通してアーチ状方向に沿い左右側板6,6内及び左右
部2゜2内にPCW4材15が配設され、PC鋼材15
を緊張することによってプレストレスが導入されると共
に、左右側板6,6と底板3とが互いに結合され、上記
底板3と左右側板6,6の多数組を、長手方向に合接し
てトンネル26に形成したプレキャスト製圧力水路トン
ネルである。That is, a pre-shaped bottom plate 3 and a large number of left and right side plates 6, 6.
The bases 5 of the left and right side plates 6 are joined to the left and right parts 2 of the bottom plate 3, and the upper parts 4 of the left and right side plates 6 are joined to each other to form an arch shape. 4
A PCW4 material 15 is disposed inside the left and right side plates 6, 6 and within the left and right parts 2°2 along the arched direction, penetrating the joint part of the left and right parts 2 and the joint part of at least one of the left and right parts 2.
By applying tension, a prestress is introduced, and the left and right side plates 6, 6 and the bottom plate 3 are connected to each other, and multiple sets of the bottom plate 3 and left and right side plates 6, 6 are joined in the longitudinal direction to form the tunnel 26. This is a precast pressure waterway tunnel.
(作用)
底板3の左右部2に左右側板6の夫々の基部5を接合し
、左右側板6の夫々の上部4を互に今接し、上部4の合
接部分及び左右部2の少なくとも一方の接合部分を貫通
して門形状に沿って左右側板6,6内及び左右部2,2
内に配設されるPC鋼材15を緊張すれば、左右側板6
,6と底板3とが充分に大きい圧縮力で互に結合されて
アーチ状のトンネルユニノ)26aが形成されると共に
、このアーチ状に浴うプレストレスがこのトンネルユニ
ット26aに導入されることてなる。(Function) The respective base parts 5 of the left and right side plates 6 are joined to the left and right parts 2 of the bottom plate 3, the respective upper parts 4 of the left and right side plates 6 are now brought into contact with each other, and the joint part of the upper part 4 and at least one of the left and right parts 2 are connected. Penetrate the joint part and follow the gate shape into the left and right side plates 6, 6 and the left and right parts 2, 2.
By tensioning the PC steel material 15 disposed inside, the left and right side plates 6
, 6 and the bottom plate 3 are coupled together with a sufficiently large compressive force to form an arch-shaped tunnel unit 26a, and the prestress applied to this arch-shaped tunnel unit 26a is introduced into the tunnel unit 26a. It becomes.
このトンネルユニット26aは、プレキャストされた左
右側板6,6と底板3の3つの部材からなるので、小形
、軽量となって取扱いが容易であシ、しかもブレキャス
ト製のため、常に品質は優良で安定しており、能率良く
製作されるので低コストのトンネル26が得られる。This tunnel unit 26a is made up of three precast members: the left and right side plates 6, 6 and the bottom plate 3, so it is small and lightweight, making it easy to handle.Moreover, since it is made of precast material, the quality is always excellent. The tunnel 26 is stable and efficiently manufactured, resulting in a low-cost tunnel 26.
(実施例) 次にこの発明の一実施例を図にもとすいて説明する。(Example) Next, one embodiment of the present invention will be described with reference to the drawings.
第1図に正面を、第2図に左側面を、第3図に右側面を
、第4図に平面を、夫々示したように、平な底部1の左
右部2.2をこの底部1から立上らせている底板3及び
、その上部4,4を互に合接することによってアーチ状
となシ、その基部5゜5が底板3の上記左右部2,2に
接合できるように形成されている左右側板6,6とを、
プレキャスト方式によって造型する。As shown in the front view in Fig. 1, the left side in Fig. 2, the right side in Fig. 3, and the plan view in Fig. 4, the left and right parts 2.2 of the flat bottom 1 are By joining the bottom plate 3 standing up from the base plate 3 and its upper parts 4, 4 to each other, it forms an arch shape, and its base 5° 5 is formed so that it can be joined to the left and right parts 2, 2 of the bottom plate 3. The left and right side plates 6, 6 that are
It is molded using the precast method.
底板3及び左右側板6,6は、共に運搬などの取扱いの
便宜のため、長さを短かく造型する。The bottom plate 3 and the left and right side plates 6, 6 are both shaped to have short lengths for ease of handling such as transportation.
第5図に示している斜視図によって明らかなように、左
右側板6,6の夫々の上部4,4及び一つの左右側板6
をアーチ状に沿って貫通するシース管7,7及び8,8
を、一方のシース管7,7は、左右側板6の長手方向中
心附近に、又、他のシース管8,8は、長手方向外側に
、夫々、位置するように配設し、上部4の附近にはシー
ス管9を、基部5にもシース管10を、共に左右側板6
の長手方向に清って貫設している。As is clear from the perspective view shown in FIG.
Sheath tubes 7, 7 and 8, 8 that penetrate along the arch shape
One of the sheathed tubes 7, 7 is arranged near the longitudinal center of the left and right side plates 6, and the other sheathed tubes 8, 8 are arranged on the outside in the longitudinal direction, respectively. There is a sheath tube 9 nearby, a sheath tube 10 at the base 5, and both left and right side plates 6.
It penetrates clearly in the longitudinal direction.
底板3の左右部2には、基部5にこの左右部2が接合さ
れる状態で左右側板6の上記シース管7又は8に夫々連
通できる位置にシース管11゜11と12.12を、夫
々設け、左右部2を長手方向に貫通するシース管13及
び、底部1を左右方向に貫通するシース管14.14を
、夫々、設けている。Sheath pipes 11, 11 and 12, 12 are provided on the left and right parts 2 of the bottom plate 3 at positions where they can communicate with the sheath pipes 7 and 8 of the left and right side plates 6, respectively, with the left and right parts 2 joined to the base 5. A sheath tube 13 and a sheath tube 14 and 14 are provided, respectively, passing through the left and right parts 2 in the longitudinal direction, and sheath pipes 14 and 14 passing through the bottom part 1 in the left and right direction.
PC鋼材15を定着するための定着板16を、底部lの
隅部外側に設けている例えば凹状の定着座17.17.
18.18及び19に夫々、固設し、左右側板6の上部
4,4の外側部にも、例えば凹状の定着板20と21.
21を夫々設け、左右側板6の数個のうちの1個に、凹
状の定着座22と23を夫々、内側部に設け、底板3の
数個のうちの1個に、凹状の定着座24を左右部2の内
側部に設けている。A fixing plate 16 for fixing the PC steel material 15 is provided on the outside of the corner of the bottom l, for example, a concave fixing seat 17.17.
18. Fixing plates 20 and 21.18 and 19, respectively, are fixed, and also on the outside of the upper parts 4, 4 of the left and right side plates 6, for example, concave fixing plates 20 and 21.
21 are respectively provided, concave fixing seats 22 and 23 are provided on the inner side of one of the left and right side plates 6, and a concave fixing seat 24 is provided on one of the bottom plate 3. are provided inside the left and right parts 2.
このようにしてプレキャストされている左右側板6,6
と底板3を、第7図と第8図に例示したように、上部4
,4を互に合接し、基部5を底板3の左右部2に接合し
、シース管7とシース管11に周方向のPC鋼材15を
挿通して定着座2゜の定着板16にこのPC鋼材の上端
を定着し、又、シース管8とシース管12に周方向のP
C鋼材15を夫々、挿通して定着座21の定着板16に
このPC鋼材15の上端を定着し、緊張装置25を用い
て底部1の側からこれらのPC鋼材15を夫々緊張して
、底板3の定着座18と19の定着板16に、上記4本
の周方向のPC鋼材15を定着すれば、左右側板6,6
が上部4,4にて互に合接し、左右側板6,6と底板3
が基部5と左右部2にて互に接合されて1体のアーチ状
のトンネルユニット26aに形成されると共に、このア
ーチ状に沿っテフレストレスがトンネルユニット26a
K4人されることになる。The left and right side plates 6, 6 precast in this way
and the bottom plate 3, as illustrated in FIGS. 7 and 8, the upper part 4
. The upper end of the steel material is fixed, and the sheath pipe 8 and the sheath pipe 12 are fixed with P in the circumferential direction.
The upper ends of these PC steel materials 15 are fixed to the fixing plate 16 of the fixing seat 21 by inserting the C steel materials 15 respectively, and each of these PC steel materials 15 is tensioned from the side of the bottom part 1 using the tensioning device 25. If the four PC steel members 15 in the circumferential direction are fixed to the fixing plates 16 of fixing seats 18 and 19 of No. 3, the left and right side plates 6, 6
are joined to each other at the upper parts 4, 4, and the left and right side plates 6, 6 and the bottom plate 3
are joined to each other at the base 5 and the left and right parts 2 to form one arch-shaped tunnel unit 26a, and the Teflon stress is applied along this arch shape to the tunnel unit 26a.
There will be 4 K people.
シース管14にPC鋼材15を挿通してこのPC鋼材1
5を緊張して底板3の左右方向にプレストレスを導入し
、シース管7,8及び14内に、グラウトを注入する。By inserting the PC steel material 15 into the sheath pipe 14,
5 is tensed to introduce prestress in the left-right direction of the bottom plate 3, and grout is injected into the sheath pipes 7, 8, and 14.
地山に坑道27を掘削し、トンネルユニット26aを例
えば5個、シース管9,10.13に挿通したPC鋼材
15を用いて仮締めし、この一体となった5個を第9図
のようにツヤツキ付台車28を用いて坑道27内に搬入
し、第10図のようにフォークリフト29を用いてトン
ネルユニット26aを1個宛、所定位置に据え付け、据
え付けを終ったこれらのトンネルユニット26aの例え
ば5個毎にそのシース管9’、 10 、13へ長手方
向のPC鋼材15を挿通して定着板16にPC鋼材15
の手前側の端部を定着する。A tunnel 27 is excavated in the ground, and five tunnel units 26a, for example, are temporarily tightened using the PC steel material 15 inserted through the sheath pipes 9 and 10.13, and the five integrated tunnel units 26a are assembled as shown in FIG. The tunnel units 26a are then carried into the tunnel 27 using a glossy cart 28, and each tunnel unit 26a is installed at a predetermined position using a forklift 29 as shown in FIG. 10. Insert the PC steel material 15 in the longitudinal direction into the sheath tubes 9', 10, and 13 every five pieces, and insert the PC steel material 15 into the fixing plate 16.
Fix the front end of the
次に再び5個のトンネルユニノ)26aを仮締めしてツ
ヤツキ付台車28を用いて坑道27内にこの5個のトン
ネルユニット26aを搬入し、フォークリフト29を用
いてトンネルユニット26aを1個宛、所定位置に据え
付け、5個のトンネルユニット26aのシース管9,1
0.13に長手方向のPC鋼材15を挿通して、第13
図にシース管9と定着座22について例示したように、
すでに据え付けが終って定着済みの長手方向のPC鋼材
15(同図の左側)のねじ部15aに、カップラ30を
介して末緊張側の長手方向のPC鋼材」(同図の右側)
を接続し、第11図に示すように定着座22.23の無
い1個のトンネルユニット26aを、上記5個のトンネ
ル二二ノ)26aの最外側に接合して短かいPC鋼材百
を同図の右側のPC鋼材15に、カップラ30を介して
連結し、緊張装置25を用いてこれらのPC鋼材上互1
口を緊張し、アンカナツト31をねじ部15aにねじ込
んでPC鋼材15を定着すると、上記5個のトンネルユ
ニツ)26aの延長継ぎ足しが終ると共に長手方向にプ
レストレスが導入される。Next, the five tunnel units 26a are temporarily tightened again, and the five tunnel units 26a are carried into the tunnel 27 using the glossy cart 28, and the forklift 29 is used to move the tunnel units 26a one by one. , installed in a predetermined position, the sheath pipes 9, 1 of the five tunnel units 26a
0.13 by inserting the longitudinal PC steel material 15 into the 13th
As illustrated for the sheath tube 9 and fixing seat 22 in the figure,
The prestressed longitudinal prestressing steel material 15 (on the left side of the figure) is attached to the threaded portion 15a of the prestressed longitudinal prestressing steel material 15 (on the left side of the figure) which has already been installed and fixed, via the coupler 30 (on the right side of the same figure).
As shown in Fig. 11, one tunnel unit 26a without a fixing seat 22 or 23 is joined to the outermost side of the five tunnels 22) 26a, and a short PC steel material is connected to the same one. It is connected to the PC steel material 15 on the right side of the figure via the coupler 30, and the tension device 25 is used to tighten the PC steel material 15 on the right side of the figure.
When the opening is tightened and the anchor nut 31 is screwed into the threaded portion 15a to fix the PC steel material 15, the extension and addition of the five tunnel units 26a is completed and prestress is introduced in the longitudinal direction.
定着を終れば最外側の短かいPC鋼材15を抜き取って
再び上述した順序で5個宛、トンネルユニッ)26aを
ジヤツキ付台車28で坑道27内に搬入し、フォークリ
フト29を用いて据え付けてこの搬入された5個と1個
のトンネルユニット261Lに緊張力を与え、この新た
な5個のトンネルユニット26aの結合を行い、このよ
うにして例えば5個宛、トンネルユニット26aを継足
していくことになる。Once the fixing is completed, the outermost short PC steel material 15 is extracted, and the five tunnel units 26a are carried in the above-mentioned order into the tunnel 27 using a cart with jacks 28, installed using a forklift 29, and transported. A tension force is applied to the five tunnel units 261L that have been added and one tunnel unit 261L, and the new five tunnel units 26a are combined, and in this way, for example, five tunnel units 26a are added. Become.
所定の長さのトンネル26を形成し終え、シース管9,
10.13にグラウトを注入し、第12図のよ、うに底
板3及び左右側板6の夫々のグラウト注入孔32,33
.34を用いてトンネル26の内部からグラウトを、坑
道27とトンネル26との間隙に充填する。After forming the tunnel 26 of a predetermined length, the sheath tube 9,
10. Inject grout into the holes 32 and 33 of the bottom plate 3 and left and right side plates 6, respectively, as shown in FIG.
.. 34 is used to fill the gap between the shaft 27 and the tunnel 26 with grout from inside the tunnel 26.
トンネルユニット26aの坑道27への搬入と据え付は
方法は、上述例のほか、種々の方法をAいることができ
る。The tunnel unit 26a can be carried into the shaft 27 and installed by various methods in addition to the above-mentioned example.
以上の実施例では、PC鋼材15は夫々のシース管7,
8.・・・に挿通したものを用いたのであり、シースW
7 、8 、・・・を使用しないで、アンポンドPC鋼
材15として用いてもこの発明は達成されるものである
。In the above embodiment, the PC steel material 15 is attached to each sheath pipe 7,
8. ... was used, and the sheath W
The present invention can be achieved even if the unpond PC steel material 15 is used without using 7, 8, . . . .
即ち、左右側板6内にそのアーチ状゛に沿ってアンぜン
ドPC鋼材を、又、左右部2内に周方向に清ってアンポ
ンドPC鋼材を、夫々、配設しておき、左右側板6と底
板3を接合したとき、上記双方のアンボンドルc鋼材を
、例えば左右部2に設けである図示有略の連結用凹部内
にて互に連結し、左右側板6の上部及び底板3の左右部
2に夫々前後方向に貫設したアンがンドPC鋼材につい
ても、前後方に隣接するものを連結し、底部1内の左右
方向にアンボンドPC鋼材を配設することになる。That is, an unsold PC steel material is disposed along the arch shape in the left and right side plates 6, and an unpounded PC steel material is disposed in the left and right parts 2 in the circumferential direction. When the and bottom plate 3 are joined, both of the unbonded steel members are connected to each other in, for example, connecting recesses (not shown) provided in the left and right parts 2, and the upper parts of the left and right side plates 6 and the left and right parts of the bottom plate 3 are connected together. Regarding the unbonded PC steel materials that penetrate through the bottom part 2 in the front and rear directions, the adjacent ones in the front and rear are connected, and the unbonded PC steel materials are arranged in the left and right direction inside the bottom part 1.
通水中、トンネル26の長手方向に作用する力は、流水
抵抗によるわづかなものであるので、長手方向にはプレ
ストレス量を周方向に比べて若干減少させて導入するこ
とも可能である。Since the force acting in the longitudinal direction of the tunnel 26 during water flow is small due to water flow resistance, it is also possible to introduce a prestress amount in the longitudinal direction that is slightly reduced compared to the circumferential direction.
底部1内の左右方向に配設されたPC鋼材15は、上述
の如くポストテンション方式又は、プレテンション方式
の何れであっても良い。The PC steel materials 15 disposed in the left-right direction within the bottom portion 1 may be of either the post-tension type or the pre-tension type as described above.
トンネル26の長手方向のPC鋼材15のための定着用
凹部22.23及び24は、図示例では、左右側板6と
底板3の何れも内側に設けているので、PC鋼材15の
ねじ部15aへアンカナツト31をねじ込む定着操作を
、トンネル26の内側から行うことができるため、坑道
27の断面積は、トンネルユニソ)26aを搬入できる
ていどの最小のもので足シることになシ、掘削コストを
充分に安くできるものである。In the illustrated example, the fixing recesses 22, 23 and 24 for the prestressed steel material 15 in the longitudinal direction of the tunnel 26 are provided inside both the left and right side plates 6 and the bottom plate 3, so that the fixing recesses 22, 23 and 24 for the prestressed steel material 15 in the longitudinal direction of the tunnel 26 are provided inside both the left and right side plates 6 and the bottom plate 3. Since the fixing operation for screwing in the anchor nut 31 can be performed from inside the tunnel 26, the cross-sectional area of the tunnel 27 can be set to the smallest size that can carry the tunnel unit 26a, and the excavation cost can be reduced sufficiently. It can be done cheaply.
左右部2と基部5との接合部は、図示例の′ように段付
状に形成して、パツキン材35をこの接合部に介装して
いる。The joint portion between the left and right portions 2 and the base portion 5 is formed in a stepped shape as shown in the illustrated example, and a packing material 35 is interposed in this joint portion.
又、夫々の定着座17 、18 、・・・には、モルタ
ルを充填して、その凹部を平滑化する。Further, each of the fixing seats 17, 18, . . . is filled with mortar to smooth the recessed portions.
図示例では、左右側板6,6の一方の上部4のシース管
7及び他方の左右側板6のシース管7に挿通した周方向
のPC鋼材15を、底板3の他側の左右部2に挿通し、
この一方の上部4の定着座20に上端を定着したこのP
C鋼材15を、底板3の他側の左右部2から緊張し、他
方の左右側板6の上部4のシース管8及び他方の左右側
板6のシース管8に挿通した周方向のPC鋼材15を、
底板3の一方の左右部2に挿通してこの他方の上部4の
定着座21に上端を定着したPC鋼材15を、底板3の
一方の左右部2から緊張しているので、これら周方向の
PC鋼材15.15の緊張によって左右側板6,6は、
夫々の上部4,4の合接部分にて互に強く引き寄せられ
て強固に結合されることになる。In the illustrated example, the circumferential PC steel material 15 inserted through the sheath pipe 7 of the upper part 4 of one of the left and right side plates 6, 6 and the sheath pipe 7 of the other left and right side plate 6 is inserted into the left and right parts 2 of the other side of the bottom plate 3. death,
This P whose upper end is fixed to the fixing seat 20 on one of the upper parts 4
The C steel material 15 is tensioned from the left and right parts 2 on the other side of the bottom plate 3, and the PC steel material 15 in the circumferential direction is inserted into the sheath pipe 8 of the upper part 4 of the other left and right side plates 6 and the sheath pipe 8 of the other left and right side plates 6. ,
The PC steel material 15, which is inserted through one of the left and right parts 2 of the bottom plate 3 and whose upper end is fixed to the fixing seat 21 of the other upper part 4, is tensioned from one of the left and right parts 2 of the bottom plate 3, so that the circumferential direction of the PC steel material 15 is Due to the tension of the PC steel material 15.15, the left and right side plates 6, 6 are
The respective upper parts 4, 4 are strongly attracted to each other at the joint portion and are firmly connected.
シース管7,7と8,8は長手方向中心に対して対象に
配置しであるので、これらのシース管7゜8に挿通して
いるPC鋼材15によって導入されるプレストレスは、
長手方向にて偏シ無く作用するものである。Since the sheath tubes 7, 7 and 8, 8 are arranged symmetrically with respect to the longitudinal center, the prestress introduced by the PC steel material 15 inserted into these sheath tubes 7°8 is:
It acts evenly in the longitudinal direction.
(発明の効果)
この発明に係るプレキャスト製圧力水路トンネルは上述
のように構成したものであって、底板3の左右部2に左
右側板6の夫々の基部5を接合し、左右側板6の夫々の
上部4を互に合接し、上部4の合接部分及び左右部2の
少なくとも一方の接合部分を貫通してアーチ状に沿って
左右側板6,6内及び左右部2,2内に配設されるPC
,fi材15を緊張すれば、左右側板6,6と底板3と
が互に引き寄せられて充分に大きい圧縮力で一体に結合
され、これによってトンネルユニノ)26aが形成され
ると共に、プレストレスが導入され、左右側板6,6と
底板3の多数組を長手方向に合成することによって上記
3つの部材が互いに結合されて圧力水路トンネルとして
直ちに使用できる。(Effects of the Invention) The precast pressure waterway tunnel according to the present invention is constructed as described above, in which the base portions 5 of the left and right side plates 6 are joined to the left and right portions 2 of the bottom plate 3, and the bases 5 of the left and right side plates 6 are connected to each other. The upper parts 4 of the parts are joined to each other, and the parts are arranged in the left and right side plates 6, 6 and in the left and right parts 2, 2 along an arch shape, passing through the joint part of the upper part 4 and the joint part of at least one of the left and right parts 2. PC to be
, by tensioning the fi material 15, the left and right side plates 6, 6 and the bottom plate 3 are drawn together and joined together with a sufficiently large compressive force, thereby forming the tunnel unino) 26a and creating a prestressed is introduced, and by combining multiple sets of left and right side plates 6, 6 and bottom plate 3 in the longitudinal direction, the above three members are connected to each other and can be used immediately as a pressure waterway tunnel.
したがってこの発明によれば、現場打ち工法に必要な養
生期間が不要となって工期は著しく短縮され、導入され
たプレストレスによって内水圧による引張応力に良く対
向できてひび割れ防止に有効となり、しかも、左右側板
6,6と底板3の3つの部材を組合せだものであるので
、組立に到るまでの運搬等の取扱いに、小形軽量化され
ていることによる労力軽減に有効である。Therefore, according to this invention, the curing period required for the cast-in-place construction method is no longer necessary, so the construction period is significantly shortened, and the introduced prestress can effectively counter the tensile stress caused by internal water pressure, which is effective in preventing cracks. Since it is a combination of three members, the left and right side plates 6, 6, and the bottom plate 3, it is effective in reducing the labor involved in handling such as transportation until assembly due to its small size and light weight.
さらにプレキャスト製であるから、品質は常に優良で安
定しておυ、能率良く造型できるので低コストであって
、圧力水路トンネルとして適したものとなった。Furthermore, since it is made of precast, the quality is always excellent and stable, and it can be manufactured efficiently, resulting in low cost, making it suitable for pressure waterway tunnels.
左右側板6内及び底板3の左右部2内における夫々の長
手方向にもPC鋼材15を配設している発明では、その
緊張によって長手方向の組立てがなされると共に、長手
方向のプレストレスが導入されるので、通水方向に対す
る剛性が増強される利点を有している。In the invention in which the PC steel members 15 are also arranged in the longitudinal direction in the left and right side plates 6 and in the left and right parts 2 of the bottom plate 3, the longitudinal assembly is performed by the tension, and prestress in the longitudinal direction is introduced. Therefore, it has the advantage of enhanced rigidity in the water flow direction.
図はこの発明の一実施例を示し、第1図はトンネルユニ
ットの正面図、第2図、第3図、第4図は、夫々左側面
図、右側面図、平面図であシ、第5図はトンネルの斜視
図、第6図は第5図におけ第15図は第11図における
要部拡大断面図である。
2・・・左右部、3・・・底板、4・・・上部、5・・
・基部、6・・・左右側板、15・・・PC鋼材、26
・・・トンネル。The figures show one embodiment of the present invention, and FIG. 1 is a front view of the tunnel unit, and FIGS. 2, 3, and 4 are a left side view, a right side view, and a top view, respectively. FIG. 5 is a perspective view of the tunnel, FIG. 6 is an enlarged sectional view of the main part in FIG. 5, and FIG. 15 is an enlarged sectional view of the main part in FIG. 2...Left and right parts, 3...Bottom plate, 4...Top, 5...
・Base, 6... Left and right side plates, 15... PC steel material, 26
···tunnel.
Claims (6)
り、左右側板の基部は底板の左右部に接合されると共に
、左右側板の上部は互いに合接されてアーチ状に形成さ
れるように設けてあり、上記上部の合接部分及び左右部
の少なくとも一方の接合部分を貫通してアーチ状方向に
沿い左右側板内及び夫々の左右部内にPC鋼材が配設さ
れ、PC鋼材を緊張することによってプレストレスが導
入されると共に、左右側板と底板とが互いに結合され、
上記底板と左右側板の多数組を、長手方向に合接してト
ンネルに形成したことを特徴とするプレキャスト製圧力
水路トンネル。(1) Consisting of a pre-shaped bottom plate and a plurality of left and right side plates, the bases of the left and right side plates are joined to the left and right parts of the bottom plate, and the upper parts of the left and right side plates are joined to each other to form an arch shape. The PC steel material is provided in the left and right side plates and in the respective left and right parts along the arched direction, penetrating the joint part of the upper part and the joint part of at least one of the left and right parts, and tensions the PC steel material. As a result, prestress is introduced, and the left and right side plates and the bottom plate are connected to each other,
A precast pressure waterway tunnel characterized in that a plurality of sets of the bottom plate and left and right side plates are joined in the longitudinal direction to form a tunnel.
ことを特徴とする特許請求の範囲第1項記載のプレキャ
スト製圧力水路トンネル。(2) The precast pressure water tunnel according to claim 1, wherein the PC steel material is inserted into a sheath pipe.
を特徴とする特許請求の範囲第1項記載のプレキャスト
製圧力水路トンネル。(3) The precast pressure waterway tunnel according to claim 1, wherein the PC steel material is an unbonded PC steel material.
り、左右側板の基部は底板の左右部に接合されると共に
、左右側板の上部は互いに合接されてアーチ状に形成さ
れるように設けてあり、上記上部の合接部分及び左右部
の少くとも一方の接合部分を貫通してアーチ状方向に沿
い左右側板内及び夫々の左右部内に周方向のPC鋼材が
配設され、又、左右側板内及び底板の左右部内に長手方
向のPC鋼材が配設され、左右側板と底板の多数組を長
手方向に合接し、上記2つの方向のPC鋼材を共に緊張
することによってアーチ状方向及び長手方向に夫々、プ
レストレスが導入されると共に、左右側板と底板とが互
いに結合されてトンネルに形成されることを特徴とする
プレキャスト製圧力水路トンネル。(4) Consisting of a pre-shaped bottom plate and a plurality of left and right side plates, the bases of the left and right side plates are joined to the left and right parts of the bottom plate, and the upper parts of the left and right side plates are joined to each other to form an arch shape. A PC steel material is provided in the circumferential direction within the left and right side plates and within the respective left and right parts along the arch-shaped direction, penetrating the joint part of the upper part and the joint part of at least one of the left and right parts, and , PC steel members in the longitudinal direction are arranged in the left and right side plates and in the left and right parts of the bottom plate, and multiple sets of the left and right side plates and the bottom plate are joined in the longitudinal direction, and the PC steel members in the two directions are tensioned together to form an arcuate direction. and a precast pressure waterway tunnel characterized in that a prestress is introduced in the longitudinal direction, and the left and right side plates and the bottom plate are connected to each other to form a tunnel.
ことを特徴とする特許請求の範囲第4項記載のプレキャ
スト製圧力水路トンネル。(5) The precast pressure water tunnel according to claim 4, wherein the PC steel material is inserted into a sheath pipe.
を特徴とする特許請求の範囲第4項記載のプレキャスト
製圧力水路トンネル。(6) The precast pressure waterway tunnel according to claim 4, wherein the PC steel material is an unbonded PC steel material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61177590A JPS6335909A (en) | 1986-07-30 | 1986-07-30 | Precast pressure-resistant waterway tunnel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61177590A JPS6335909A (en) | 1986-07-30 | 1986-07-30 | Precast pressure-resistant waterway tunnel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6335909A true JPS6335909A (en) | 1988-02-16 |
Family
ID=16033650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61177590A Pending JPS6335909A (en) | 1986-07-30 | 1986-07-30 | Precast pressure-resistant waterway tunnel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6335909A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5051767A (en) * | 1989-05-09 | 1991-09-24 | Asahi Kogaku Kogyo Kabushiki Kaisha | Distance measuring device |
JP2015045205A (en) * | 2013-08-29 | 2015-03-12 | 株式会社大林組 | Tunnel and construction method of tunnel |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4919968U (en) * | 1972-05-22 | 1974-02-20 |
-
1986
- 1986-07-30 JP JP61177590A patent/JPS6335909A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4919968U (en) * | 1972-05-22 | 1974-02-20 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5051767A (en) * | 1989-05-09 | 1991-09-24 | Asahi Kogaku Kogyo Kabushiki Kaisha | Distance measuring device |
JP2015045205A (en) * | 2013-08-29 | 2015-03-12 | 株式会社大林組 | Tunnel and construction method of tunnel |
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