JPH0786314B2 - Construction method of side wall used for widening part of tunnel - Google Patents
Construction method of side wall used for widening part of tunnelInfo
- Publication number
- JPH0786314B2 JPH0786314B2 JP4158673A JP15867392A JPH0786314B2 JP H0786314 B2 JPH0786314 B2 JP H0786314B2 JP 4158673 A JP4158673 A JP 4158673A JP 15867392 A JP15867392 A JP 15867392A JP H0786314 B2 JPH0786314 B2 JP H0786314B2
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- panel
- side wall
- widening
- steel frame
- 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
Landscapes
- Lining And Supports For Tunnels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、道路トンネルの合流
部、トンネル内待避所等、トンネル幅が暫時変化するト
ンネル拡幅部に用いる側壁の構築工法、特にＮＡＴＭ工
法で掘削覆工した一様断面の拡幅部の側壁部に、トンネ
ル幅が暫時変化するようにプレキャスト板を取付けるよ
うにした工法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method of a side wall used for a widening portion of a tunnel where the width of the tunnel temporarily changes, such as a junction of a road tunnel, a shelter in a tunnel, etc. The present invention relates to a construction method in which a precast plate is attached to the side wall portion of the widened portion so that the tunnel width changes temporarily.
【０００２】[0002]
【従来の技術】従来、トンネル幅が暫時変化するトンネ
ル拡幅部を施工する場合には、トンネル幅が暫時変化す
るようにトンネル線形に倣って掘削して覆工することが
困難なことから、図５に示すようにトンネル断面を段階
的に変化させて掘削し、順次型枠断面の異なるセントル
を用いて段階的にコンクリート覆工していた。2. Description of the Related Art Conventionally, when constructing a tunnel widened portion in which the tunnel width changes for a while, it is difficult to excavate and line the tunnel along the tunnel line so that the tunnel width changes for a while. As shown in Fig. 5, the tunnel cross-section was changed stepwise for excavation, and the concrete was lined up in stages by using centles with different formwork cross-sections.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の工法では、
段階的に変化するトンネル断面毎に型枠断面の異なるセ
ントルが必要となり、施工費用がそれだけ嵩むと共に、
短区間でセントルを交換するため施工管理が煩雑で施工
能率も悪く、しかも完成したトンネル拡幅部の側壁が階
段状の多断面形をなすため、この部分を走行する車輛の
運転者に威圧感を与え、通行時の円滑な視線誘導を阻害
するなどの多くの問題があった。SUMMARY OF THE INVENTION In the above conventional method,
A different center section is required for each tunnel section that changes in stages, which increases the construction cost and
Since the center is replaced in a short section, the construction management is complicated and the construction efficiency is poor.In addition, the side wall of the completed tunnel widening section has a stepped multi-section shape, so the driver of the vehicle traveling in this section feels intimidating. There were many problems such as obstructing the smooth gaze guidance when giving and passing.
【０００４】[0004]
【課題を解決するための手段】この発明は前記従来の課
題を解決するために、トンネル拡幅部をその最大断面形
に一様に掘削して覆工コンクリート１を打設した後、そ
の拡幅覆工部の側壁部にトンネル線形に沿ったパネル取
付部をもった鋼製フレーム２を取付け、この鋼製フレー
ム２のパネル取付部にＰＣパネル４を横方向に連続して
取付けるようにしたトンネル拡幅部における側壁構築工
法を提案するものである。In order to solve the above-mentioned conventional problems, the present invention uniformly excavates a tunnel widening portion to its maximum cross-sectional shape and pour lining concrete 1, and then the widening covering. A widening tunnel in which a steel frame 2 having a panel mounting portion along the tunnel alignment is attached to the side wall portion of the working portion, and the PC panel 4 is continuously attached laterally to the panel mounting portion of the steel frame 2. It proposes a side wall construction method in the section.
【０００５】[0005]
【作用】トンネル拡幅部はその最大断面形に一様に掘削
して覆工コンクリート１により覆工するため、同一断面
に掘削して一台のセントルで覆工でき、施工管理が容易
で施工能率もよい。[Operation] Since the tunnel widening part is uniformly excavated to the maximum cross-sectional shape and lined with lining concrete 1, it can be excavated on the same cross section and lined with a single centle, and construction management is easy and construction efficiency is high. Good.
【０００６】拡幅覆工部の側壁部にトンネル線形に沿っ
たパネル取付部をもった鋼製フレーム２を取付け、この
鋼製フレーム２のパネル取付部にＰＣパネル４を横方向
に連続して取付けるため、拡幅部の側壁面がトンネル線
形に沿った平滑な連続壁面に形成され、走行する車輛の
運転者に対する円滑な視線誘導を果たすことができる。A steel frame 2 having a panel mounting portion along the tunnel alignment is mounted on the side wall of the widening lining portion, and a PC panel 4 is continuously mounted laterally on the panel mounting portion of the steel frame 2. Therefore, the side wall surface of the widened portion is formed as a smooth continuous wall surface along the tunnel alignment, and it is possible to smoothly guide the line of sight to the driver of the traveling vehicle.
【０００７】鋼製フレーム２に取付けたＰＣパネル４
は、その上端をトンネル上部壁に接触させずにその上方
に空隙を残すため、同一寸法形状のコンクリート板を用
いることができる。PC panel 4 mounted on a steel frame 2
Since the upper end thereof does not contact the upper wall of the tunnel and leaves a void above it, a concrete plate of the same size and shape can be used.
【０００８】[0008]
【実施例】図１に示すように道路トンネルの合流部等、
トンネル幅が暫時変化するトンネル拡幅部をその最大断
面形に一様に掘削して覆工コンクリート１を打設する。[Example] As shown in FIG.
The tunnel widening part in which the tunnel width changes temporarily is excavated uniformly to the maximum cross-sectional shape, and the lining concrete 1 is placed.
【０００９】次いで、図２に示すようにこの拡幅覆工部
の斜行側の側壁面に、その斜行トンネル線形に沿ったパ
ネル取付部をもった鋼製フレーム２をホールインアンカ
ー３により取付ける。Next, as shown in FIG. 2, a steel frame 2 having a panel mounting portion along the slanting tunnel alignment is attached to the side wall surface of the widening lining portion on the slanting side by a hole-in anchor 3. .
【００１０】鋼製フレーム２のパネル取付部には、方形
円弧板等の同一寸法形状のＰＣパネル４を横方向に連続
して取付ける。On the panel mounting portion of the steel frame 2, PC panels 4 of the same size and shape such as a rectangular arc plate are continuously mounted in the lateral direction.
【００１１】ＰＣパネル４は、その背面の上端部、中間
部及び下端部の所要箇所にねじ込みインサートを埋設し
ておき、鋼製フレーム２のパネル取付部に取付けた固定
金物を介してインサートにねじ込んだボルト５により、
上端部及び中間部を固定すると共に、その下端を床版部
６に固定したアングル等の固定金物７にボルト５により
固定する。The PC panel 4 has screw-in inserts embedded in desired positions of the upper end portion, the middle portion and the lower end portion of the back surface thereof, and is screwed into the inserts through a fixed metal piece attached to the panel mounting portion of the steel frame 2. With the bolt 5
The upper end and the middle part are fixed, and the lower end is fixed to a fixed metal object 7 such as an angle fixed to the floor slab 6 with bolts 5.
【００１２】最大横幅部における最端部のＰＣパネル４
は、図３に示すように覆工コンクリート１に添わせてこ
れに固定した固定金物にボルト５により固定する。The PC panel 4 at the end of the maximum width portion
Is fixed to the lining concrete 1 as shown in FIG.
【００１３】このように鋼製フレーム２に取付けたＰＣ
パネル４は、その上端をトンネル上部壁に接触固定する
ようにした場合には、各パネル毎にその上下の寸法形状
を順次変化させる必要があり、このような寸法形状の異
なるＰＣパネルを製造することは事実上困難であるが、
この発明においてはＰＣパネル４の上端はトンネル上部
壁に接触させず、トンネル上部壁との間に多少の空隙が
残るようにするため、同一寸法形状のパネルを用いるこ
とが可能となる。The PC mounted on the steel frame 2 in this way
When the upper end of the panel 4 is fixed to the upper wall of the tunnel by contact, the upper and lower dimensions of the panel 4 need to be sequentially changed for each panel, and PC panels having such different dimensions are manufactured. Is difficult in practice, but
In the present invention, the upper end of the PC panel 4 is not in contact with the upper wall of the tunnel, and a slight gap is left between the upper wall of the tunnel and the upper wall of the tunnel.
【００１４】なお、このようにＰＣパネル４の上端とト
ンネル上部壁との間に空隙を生じても、車輛等の通行な
どトンネルとしての利用上において支障はないが、必要
ならばＰＣパネル４の上端とトンネル上部壁との間に閉
鎖パネル８を取付けて空隙を閉鎖してもよい。It should be noted that even if a gap is formed between the upper end of the PC panel 4 and the upper wall of the tunnel as described above, it does not hinder the use of the PC panel 4 as a tunnel for passing vehicles, etc. A closure panel 8 may be attached between the upper end and the tunnel top wall to close the gap.
【００１５】また、ＰＣパネル４の背面とトンネル側壁
との間には楔状の空洞ができるが、この部分に裏込め充
填はせず、必要ならば資材などの物置場として利用す
る。A wedge-shaped cavity is formed between the back surface of the PC panel 4 and the side wall of the tunnel, but this portion is not backfilled and used as a storage space for materials and the like if necessary.
【００１６】[0016]
【発明の効果】以上の通りこの発明によれば、トンネル
拡幅部はその最大断面形に一様に掘削して覆工コンクリ
ートにより覆工するので、同一断面に掘削して一台のセ
ントルで覆工でき、施工管理が容易で施工能率もよい。As described above, according to the present invention, since the tunnel widening portion is uniformly excavated to the maximum cross-sectional shape and is lined with the lining concrete, the tunnel widening portion is excavated in the same cross section and covered with one centle. It can be constructed, the construction management is easy and the construction efficiency is good.
【００１７】拡幅覆工部の側壁部にトンネル線形に沿っ
たパネル取付部をもった鋼製フレームを取付け、この鋼
製フレームのパネル取付部にＰＣパネルを横方向に連続
して取付けるので、拡幅部の側壁面がトンネル線形に沿
った平滑な連続壁面に形成され、走行する車輛の運転者
に対する円滑な視線誘導を果たすことができる。A steel frame having a panel mounting portion along the tunnel alignment is attached to the side wall portion of the widening lining portion, and the PC panels are continuously attached laterally to the panel mounting portion of the steel frame. The side wall surface of the portion is formed as a smooth continuous wall surface along the tunnel alignment, and it is possible to smoothly guide the line of sight to the driver of the traveling vehicle.
【００１８】鋼製フレームに取付けたＰＣパネルは、そ
の上端をトンネル上部壁に接触させずにその上方に空隙
を残すので、同一寸法形状のコンクリート板を用いるこ
とができ、経済的である。The PC panel mounted on the steel frame is economical because the upper end of the PC panel is not in contact with the upper wall of the tunnel and a space is left above it, so that concrete plates having the same size and shape can be used.
【図１】この発明により施工したトンネル拡幅部の横断
平面図。FIG. 1 is a cross-sectional plan view of a tunnel widening portion constructed according to the present invention.
【図２】この発明により施工したトンネル拡幅部の最小
横幅部の部分縦断正面図。FIG. 2 is a partial vertical sectional front view of a minimum lateral width portion of a tunnel widening portion constructed according to the present invention.
【図３】この発明により施工したトンネル拡幅部の最大
横幅部の部分縦断正面図。FIG. 3 is a partial vertical sectional front view of the maximum lateral width portion of the tunnel widening portion constructed according to the present invention.
【図４】従来の工法により施工したトンネル拡幅部の横
断平面図。FIG. 4 is a cross-sectional plan view of the widened portion of the tunnel constructed by the conventional method.
１ 覆工コンクリート ２ 鋼製フレーム ３ ホールインアンカー ４ ＰＣパネル ５ ボルト ６ 床版部 ７ 固定金物 ８ 閉鎖パネル 1 Lining concrete 2 Steel frame 3 Hole-in anchor 4 PC panel 5 Bolt 6 Floor slab 7 Fixing hardware 8 Closing panel
フロントページの続き (72)発明者 門屋 智 東京都港区芝４丁目２番３号 日本プレス コンクリート株式会社内 (56)参考文献 特開 平３−197796（ＪＰ，Ａ) 特開 平３−247895（ＪＰ，Ａ) 特開 平４−90000（ＪＰ，Ａ)Continuation of the front page (72) Inventor Satoshi Kadoya, 4 2-3 Shiba 4-chome, Minato-ku, Tokyo Inside Nippon Press Concrete Co., Ltd. (56) Reference JP-A-3-197796 (JP, A) JP-A-3-247895 (JP, A) JP-A-4-90000 (JP, A)
Claims (1)
に掘削して覆工コンクリートを打設した後、その拡幅覆
工部の側壁部にトンネル線形に沿ったパネル取付部をも
った鋼製フレームを取付け、この鋼製フレームのパネル
取付部にＰＣパネルを横方向に連続して取付けることを
特徴とするトンネル拡幅部に用いる側壁の構築工法。1. A steel having a panel mounting portion along a tunnel line formed on a side wall portion of the widening lining portion after uniformly excavating the widening portion of the tunnel to its maximum cross-sectional shape. A method for constructing a side wall used for a widened portion of a tunnel, characterized in that a frame made of steel is attached, and a PC panel is continuously attached laterally to the panel attachment portion of the steel frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4158673A JPH0786314B2 (en) | 1992-05-25 | 1992-05-25 | Construction method of side wall used for widening part of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4158673A JPH0786314B2 (en) | 1992-05-25 | 1992-05-25 | Construction method of side wall used for widening part of tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05321594A JPH05321594A (en) | 1993-12-07 |
| JPH0786314B2 true JPH0786314B2 (en) | 1995-09-20 |
Family
ID=15676870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4158673A Expired - Lifetime JPH0786314B2 (en) | 1992-05-25 | 1992-05-25 | Construction method of side wall used for widening part of tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0786314B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025236A (en) * | 1988-06-23 | 1990-01-10 | Sharp Corp | Optical information recording/reproducing device |
| JPH0765455B2 (en) * | 1989-05-31 | 1995-07-19 | 建設省土木研究所長 | Construction method for branch / joint of shield tunnel and temporary bulkhead construction device for branch / joint |
-
1992
- 1992-05-25 JP JP4158673A patent/JPH0786314B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05321594A (en) | 1993-12-07 |
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