JPH10176488A - Lining structure for existing tunnel - Google Patents
Lining structure for existing tunnelInfo
- Publication number
- JPH10176488A JPH10176488A JP8353740A JP35374096A JPH10176488A JP H10176488 A JPH10176488 A JP H10176488A JP 8353740 A JP8353740 A JP 8353740A JP 35374096 A JP35374096 A JP 35374096A JP H10176488 A JPH10176488 A JP H10176488A
- Authority
- JP
- Japan
- Prior art keywords
- peripheral wall
- arch
- steel plate
- existing tunnel
- side 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.)
- Granted
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、道路、鉄道等の、
老朽化、損傷した既設トンネルの補修・補強および漏水
防止の内張構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
It relates to the lining of repairs and reinforcements of aging and damaged existing tunnels and the prevention of water leakage.
【０００２】[0002]
【従来の技術】従来から、既設トンネルの補修工法に
は、覆工打換え工ということで、既設覆工をはつってコ
ンクリートを打設し直す工法がある。また、別の工法と
して、図６に示す既設トンネル１の部分補修として当て
板１６による工法がある。この工法は、トンネルの既設
覆工１７の損傷部分に当て板１６を当てアンカーボルト
１８を打設して固定する。既設覆工１７の損傷が激しい
場合には、当て板１６の支持力を十分にするため長いア
ンカーボルト１８が必要となる。2. Description of the Related Art Conventionally, as a method of repairing an existing tunnel, there is a method of re-casting concrete by using an existing lining because it is a lining replacement work. As another construction method, there is a construction method using a patch plate 16 as a partial repair of the existing tunnel 1 shown in FIG. In this method, a patch plate 16 is applied to a damaged portion of an existing lining 17 of a tunnel, and an anchor bolt 18 is driven and fixed. When the existing lining 17 is severely damaged, a long anchor bolt 18 is required to sufficiently support the support plate 16.
【０００３】[0003]
【発明が解決しようとする課題】前者の覆工打換え工に
よる工法は、覆工厚の確保が確実で、経済的であるが、
覆工はつり時に一時車輛や作業員の安全性が問題とな
る。後者の当て板１６による工法は、アンカーボルト１
８の打設が漏水の水路を形成して漏水を助長することに
なり、また元々老朽化している個所へのアンカーボルト
１８の打設であるので、アンカーボルトとしての信頼性
を発揮できない場合があり、補強構造として問題とな
る。According to the former method of lining replacement, the lining thickness can be ensured securely and is economical.
In the case of lining, safety of a temporary vehicle and workers becomes a problem during suspension. The latter method using the backing plate 16 uses the anchor bolt 1
8 will form a water leakage channel to promote water leakage, and since the anchor bolt 18 is to be installed at a place that is originally aging, the reliability as an anchor bolt may not be exhibited. There is a problem as a reinforcement structure.
【０００４】本発明は、既設トンネルの損傷による漏水
を十分に防止し、内張完成後のトンネルの内空の断面減
少が少なくでき、漏水による水圧を負担しないで土荷
重、上載荷重のみ負担する設計を可能とし、しかも施工
が安全で、工費、工期の点で有利な既設トンネルの内張
構造を提供することを目的とする。The present invention sufficiently prevents water leakage due to damage to an existing tunnel, reduces the reduction of the cross section of the inner space of the tunnel after completion of the lining, and bears only the earth load and the overhead load without bearing the water pressure due to the water leakage. An object of the present invention is to provide a lining structure of an existing tunnel which enables design, is safe in construction, and is advantageous in terms of construction cost and construction period.
【０００５】[0005]
【課題を解決するための手段】本発明は、上記の課題を
解決するためになされたものであり、下記のように構成
される。本発明の既設トンネルの内張構造は、既設トン
ネルの上部周壁に沿って鋼板製のアーチ材を設け、該上
部周壁に下方に連続する下部周壁に沿って該アーチ材に
鋼製の側部フレーム材を接合し、該側部フレーム材は、
上端において該アーチ材を支持し、下端を下盤に対して
固定し、該アーチ材と該上部周壁の間の隙間に透水性グ
ラウト材を充填し、該上部周壁からの漏水を該透水性グ
ラウト材内を通過させて該アーチ材の下端から排出する
ようにしたことにより構成される。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has the following construction. The lining structure of the existing tunnel according to the present invention is such that a steel plate arch material is provided along an upper peripheral wall of the existing tunnel, and a steel side frame is formed on the arch material along a lower peripheral wall continuing downward from the upper peripheral wall. The side frame material is joined
The arch material is supported at the upper end, the lower end is fixed to the lower plate, the gap between the arch material and the upper peripheral wall is filled with a permeable grout material, and water leakage from the upper peripheral wall is reduced by the permeable grout. The arch material is configured to be passed through the material and discharged from the lower end of the arch material.
【０００６】ここで、既設トンネルは道路、鉄道等のト
ンネルである。本発明の既設トンネルの内張構造は、既
設トンネルの補修、補強、或いは漏水防止のために用い
ることができる。既設トンネルの周壁を上下に構成する
上部周壁と下部周壁につき、上部周壁と下部周壁との境
界は、既設トンネルの周壁により形成される内部空間の
水平の巾が最大となる周壁の部位、或いはその近傍の位
置として定めることができる。既設トンネルの周壁の輪
郭の上部がアーチ状の形状をなし、その下部が垂直状の
形状をなす場合には、上部周壁と下部周壁との境界は、
アーチ状の周壁内側の水平の巾が最大となる、アーチ状
の周壁の最下端の部位、すなわち垂直状の周壁の最上端
の部位、或いはその近傍の位置となる。鋼板製のアーチ
材は、既設トンネルの周壁の形状と相似的な形状とする
ことが好ましい。また、鋼板製のアーチ材と周壁との間
隙は、裏込め材である透水性グラウト材を円滑に注入す
る空間が確保できればよい。鋼製の側部フレーム材は、
鋼板製のアーチを支持するものであり、既設トンネルの
長手方向に間隔をおいて設けた柱材、或いは鋼板製のア
ーチ材に連続する鋼板により形成することができる。鋼
製の側部フレーム材を柱材により形成する場合、柱材と
して形鋼、パイプ等の材料を使用する。鋼製の側部フレ
ーム材を全面鋼板により形成する場合、鋼板に補強リブ
等の補強材を設けてもよい。鋼板製のアーチ材と上部周
壁の間の隙間のみに透水性グラウト材を充填する場合、
鋼板製のアーチ材の下端に、アーチ材と上部周壁の間の
隙間を仕切るフランジ材を固定し、該フランジ材に又は
該アーチ材の下端に、施工後における上部周壁からの漏
水を排出するための開口を設ける。ただし、かかるフラ
ンジ材の態様に限らず、アーチ材の下端に仮設材を設置
し、透水性グラウト材の打設時の落下を防止してもよ
い。漏水のアーチ材の下端からの排水は、上述のように
フランジ材に又はアーチ材の下端に設けた開口により行
う場合のほか、アーチ材の下端での透水性グラウト材自
体から流下させ、アーチ材の外に排出する場合を含む。
また、アーチ材と側部フレーム材とを鋼板製による場
合、鋼板製のアーチ材と上部周壁の間、及び鋼板製の側
部フレーム材と下部周壁の間の隙間の少なくとも鋼板製
のアーチ材と上部周壁の間の隙間に透水性グラウト材を
充填し、周壁からの漏水を該透水性グラウト材内を通過
させて排出するための開口を、該透水性グラウト材の下
端近傍の前記アーチ材又は側部フレーム材の鋼板に設け
る。透水性グラウト材を充填する隙間以外の隙間は、フ
ランジ等により仕切り空間のままとするか、或いは先行
して通常のモルタル等を充填しておいてもよい。勿論、
アーチ材と側部フレーム材を形成する鋼板と周壁との全
隙間に透水性グラウト材を充填してもよい。透水性グラ
ウト材としては、エアモルタル、発泡モルタル等を使用
することができる。施工後、周壁からの漏水は、透水性
グラウト材を通過して外部に排出される。これにより、
本発明の内張構造の設計においては、地下水により受け
る水圧を考慮する必要がなくなり、内張構造の材料厚を
大幅に節減することができる。例えば、既設トンネルの
高さ約４５００ｍｍ、最大内巾約２２００ｍｍ、トンネ
ル天端で地下水の水頭１５ｍ、土被り３５ｍ（鉛直土圧
はテルツァギーのゆるみ土圧を考慮、土の内部摩擦角φ
＝３０°）である場合、通常のモルタルを使用した状態
で有限要素法による鋼板の応力解析を行うと、アーチ部
の鋼板板厚は２６ｍｍとなる。これに対し、本発明で透
水性モルタルを使用し、排水を十分行う補強構造である
と、アーチ部の鋼板板厚は１４ｍｍとなる。このよう
に、補強構造の材料厚を大幅に節減される（この例では
４６％減）。透水性グラウト材の注入のために、モルタ
ル注入孔、空気抜き孔を適宜アーチ材、側部フレーム材
に設ける。Here, the existing tunnel is a tunnel such as a road and a railway. The lining structure of the existing tunnel of the present invention can be used for repairing, reinforcing, or preventing water leakage of the existing tunnel. For the upper peripheral wall and the lower peripheral wall constituting the peripheral wall of the existing tunnel vertically, the boundary between the upper peripheral wall and the lower peripheral wall is the part of the peripheral wall where the horizontal width of the internal space formed by the peripheral wall of the existing tunnel is the maximum, or It can be determined as a nearby position. If the upper part of the contour of the peripheral wall of the existing tunnel has an arched shape and the lower part has a vertical shape, the boundary between the upper peripheral wall and the lower peripheral wall is
The lowermost portion of the arched peripheral wall, where the horizontal width inside the arched peripheral wall is maximized, that is, the uppermost portion of the vertical peripheral wall, or a position in the vicinity thereof. It is preferable that the steel plate arch material has a shape similar to the shape of the peripheral wall of the existing tunnel. The gap between the steel plate arch material and the peripheral wall only needs to be able to secure a space for smoothly injecting the water-permeable grout material as the backfill material. Steel side frame material is
It supports a steel plate arch, and can be formed by a column member provided at intervals in the longitudinal direction of the existing tunnel, or a steel plate continuous with the steel plate arch member. When the steel side frame member is formed of a pillar, a material such as a shaped steel pipe or a pipe is used as the pillar. When the steel side frame member is formed entirely of a steel plate, the steel plate may be provided with a reinforcing material such as a reinforcing rib. When filling only the gap between the steel plate arch material and the upper peripheral wall with the permeable grout material,
At the lower end of the steel plate arch material, a flange material that partitions the gap between the arch material and the upper peripheral wall is fixed, and on the flange material or at the lower end of the arch material, to discharge water leakage from the upper peripheral wall after construction. Is provided. However, the present invention is not limited to the embodiment of the flange material, and a temporary material may be provided at the lower end of the arch material to prevent the water-permeable grout material from dropping during casting. Drainage from the lower end of the arch material is performed by the flange material or the opening provided at the lower end of the arch material as described above. Including the case of discharging outside
When the arch material and the side frame material are made of steel plate, at least a steel plate arch material between the steel plate arch material and the upper peripheral wall, and a gap between the steel plate side frame material and the lower peripheral wall. A gap between the upper peripheral walls is filled with a permeable grout material, and an opening for discharging water leakage from the peripheral walls through the permeable grout material is provided near the lower end of the permeable grout material. Provided on the steel plate of the side frame material. The gaps other than the gaps filled with the water-permeable grout material may be left as partition spaces by flanges or the like, or may be filled with ordinary mortar or the like in advance. Of course,
The entire gap between the steel plate forming the arch material and the side frame material and the peripheral wall may be filled with a water permeable grout material. As the water-permeable grout material, air mortar, foam mortar, and the like can be used. After the construction, the water leakage from the peripheral wall is discharged to the outside through the permeable grout material. This allows
In designing the lining structure of the present invention, it is not necessary to consider the water pressure received by the groundwater, and the material thickness of the lining structure can be greatly reduced. For example, the height of the existing tunnel is about 4500 mm, the maximum inner width is about 2200 mm, the head of the groundwater is 15 m at the top of the tunnel, and the earth cover is 35 m.
= 30 °), when the stress analysis of the steel sheet is performed by the finite element method in a state where the normal mortar is used, the steel sheet thickness of the arch portion is 26 mm. On the other hand, if the present invention uses a water-permeable mortar and has a reinforcing structure that sufficiently drains water, the steel plate thickness of the arch portion is 14 mm. In this way, the material thickness of the reinforcement structure is greatly reduced (46% in this example). A mortar injection hole and an air vent hole are appropriately provided in the arch material and the side frame material for injecting the water-permeable grout material.
【０００７】また、本発明の既設トンネルの内張構造
は、全周壁を円弧アーチ状に構築した既設トンネルの周
壁に沿って鋼板製のアーチ材を設け、該アーチ材の下端
を下盤に対して固定し、該アーチ材と該周壁の間の隙間
に透水性グラウト材を充填し、該周壁からの漏水を該透
水性グラウト材内を通過させて排出するための開口を、
該アーチ材の下端に設けたことにより構成される。Further, in the lining structure of the existing tunnel of the present invention, a steel plate arch material is provided along the peripheral wall of the existing tunnel in which the entire peripheral wall is constructed in an arcuate arch shape, and the lower end of the arch material is attached to the lower plate. An opening for discharging water leakage from the peripheral wall through the permeable grout material, and filling the gap between the arch material and the peripheral wall with a permeable grout material,
It is constituted by being provided at the lower end of the arch material.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。図１は本発明の、道路の既設トンネルの補強、漏
水防止の内張構造の形態例を示す。既設トンネル１の内
張構造において、既設トンネル１のひび割れａを生じた
上部周壁４に沿って設けられた鋼板製のアーチ材２、上
部周壁４に下方に連続する下部周壁５に沿って設けられ
た鋼製の側部フレーム材３を示す。側部フレーム材３
は、本例では溝形鋼により形成され、上端において梁材
６を結合し、梁材６を介してアーチ材２を支持する。ま
た、側部フレーム材３は、下端において基盤材７を結合
し、基盤材７を介して下盤１４に対して固定する。アー
チ材２と上部周壁４の間の隙間にエアモルタルからなる
透水性グラウト材８を充填し、上部周壁４からの漏水を
透水性グラウト材８内を通過させてアーチ材２の下端か
ら排出するようにする。基盤材７を下盤１４に固定する
ため、アンカーボルト９を使用する。図１においては、
透水性グラウト材としてエアモルタルを注入するため
の、モルタル注入孔１０、空気抜き孔１１を設ける。ま
た、本例では、注入モルタルを落下防止するため、施工
の際にアーチ材２の下端に仮設材（図示せず）を設置す
る。図２は、注入モルタルを落下防止するため、アーチ
材２と上部周壁４の間の隙間を仕切るフランジ材１２を
固定した場合を示す。また、フランジ材１２に上部周壁
４からの漏水を排出するための開口１３を設ける。Embodiments of the present invention will be described below. FIG. 1 shows an example of a lining structure for reinforcing an existing tunnel on a road and preventing water leakage according to the present invention. In the lining structure of the existing tunnel 1, a steel plate arch material 2 provided along the upper peripheral wall 4 where the crack a of the existing tunnel 1 has occurred, and an arch material 2 provided along the lower peripheral wall 5 continuing downward from the upper peripheral wall 4. 3 shows a side frame member 3 made of steel. Side frame material 3
In the present embodiment, is formed of a channel steel, connects the beam members 6 at the upper end, and supports the arch material 2 via the beam members 6. The side frame member 3 is connected to the base member 7 at the lower end, and is fixed to the lower plate 14 via the base member 7. A gap between the arch material 2 and the upper peripheral wall 4 is filled with a water permeable grout material 8 made of air mortar, and water leakage from the upper peripheral wall 4 is passed through the water permeable grout material 8 and discharged from the lower end of the arch material 2. To do. An anchor bolt 9 is used to fix the base member 7 to the lower plate 14. In FIG.
A mortar injection hole 10 and an air vent hole 11 for injecting air mortar as a water-permeable grout material are provided. In this example, a temporary material (not shown) is installed at the lower end of the arch material 2 at the time of construction in order to prevent the poured mortar from dropping. FIG. 2 shows a case where a flange material 12 that partitions a gap between the arch material 2 and the upper peripheral wall 4 is fixed in order to prevent the poured mortar from dropping. Further, an opening 13 for discharging water leakage from the upper peripheral wall 4 is provided in the flange member 12.
【０００９】図３は本発明の、鉄道の既設トンネルの補
強、漏水の内張構造の他の形態例を示す。既設トンネル
１の内張構造において、既設トンネル１の上部周壁４に
沿って設けられた鋼板製のアーチ材２、上部周壁４に下
方に連続する下部周壁５に沿って設けられた鋼板製の側
部フレーム材３を示す。鋼板製の側部フレーム材３は、
上端においてアーチ材２を支持し、下端において下盤１
４に対して固定する。アーチ材２と側部フレーム材３と
の一体化を現場において行う場合は、先端に裏当金（図
示せず）を固定した側部フレーム材３を下部周壁５に対
してアンカーボルトにより予め位置決めしておき、この
側部フレーム材３上にアーチ材２を載置、固定するよう
にしてもよい。この場合、アンカーボルトを使用する
が、下部周壁５であるため、漏水しても、直ぐ流下し、
氷柱（つらら）の発生により弊害はない。なお、鋼板製
のアーチ材２と鋼板製の側部フレーム材３とを形成す
る、鋼板構造の接合個所はアーチ材２と側部フレーム材
３との、上述した境界個所に設けることを要しない。施
工の便宜により、他の個所に設けてもよい。鋼板製のア
ーチ材２と上部周壁４の間の隙間、及び鋼板製の側部フ
レーム材３と下部周壁５の間の隙間に、発泡モルタルか
らなる透水性グラウト材８を充填し、上部周壁４と下部
周壁５からの漏水を透水性グラウト材８内を通過させて
排出するための開口１３を、側部フレーム材の下端に設
ける。図４は、側部フレーム材３である鋼板を、形鋼等
の補強リブ材等の補強材３ａを取り付けた例を示す。図
３、図４においても、透水性グラウト材として発泡モル
タルを注入のための、モルタル注入孔、空気抜き孔を、
図１におけるように適宜設ける。FIG. 3 shows another embodiment of the reinforcing structure of the existing railway tunnel and the lining structure of the water leakage according to the present invention. In the lining structure of the existing tunnel 1, an arch material 2 made of a steel plate provided along the upper peripheral wall 4 of the existing tunnel 1, and a steel plate side provided along a lower peripheral wall 5 continuing downward from the upper peripheral wall 4. 4 shows a section frame member 3. The side frame material 3 made of steel plate is
The arch material 2 is supported at the upper end, and the lower plate 1 is supported at the lower end.
Fix to 4 When the arch member 2 and the side frame member 3 are integrated at the site, the side frame member 3 having a backing metal (not shown) fixed at the tip is pre-positioned with respect to the lower peripheral wall 5 by an anchor bolt. In addition, the arch material 2 may be placed on the side frame material 3 and fixed. In this case, an anchor bolt is used, but since it is the lower peripheral wall 5, even if water leaks, it immediately flows down,
No harm is caused by the formation of icicles (icicles). In addition, the joint part of the steel plate structure that forms the steel plate arch member 2 and the steel plate side frame member 3 does not need to be provided at the above-described boundary part between the arch member 2 and the side frame member 3. . For convenience of construction, it may be provided at another location. A gap between the steel plate arch material 2 and the upper peripheral wall 4 and a gap between the steel plate side frame member 3 and the lower peripheral wall 5 are filled with a water-permeable grout material 8 made of foamed mortar. And an opening 13 for allowing water leakage from the lower peripheral wall 5 to pass through the permeable grout material 8 and discharge the water, is provided at the lower end of the side frame material. FIG. 4 shows an example in which a steel plate serving as the side frame member 3 is attached with a reinforcing member 3a such as a reinforcing rib member such as a shaped steel member. 3 and 4, mortar injection holes and air vent holes for injecting foam mortar as a water-permeable grout material are also provided.
It is provided as appropriate as in FIG.
【００１０】図５においては、全周壁を円弧アーチ状に
構築した既設トンネルの周壁１５に沿って鋼板製のアー
チ材２を設け、アーチ材２の下端を下盤１４に対して固
定し、アーチ材２と周壁１５の間の隙間に透水性グラウ
ト材８としてエアモルタルを充填する。周壁１５からの
漏水を透水性グラウト材８内を通過させて排出するため
の開口１３を設ける。In FIG. 5, an arch material 2 made of a steel plate is provided along a peripheral wall 15 of an existing tunnel in which the entire peripheral wall is constructed in an arcuate arch shape, and the lower end of the arch material 2 is fixed to a lower plate 14 to form an arch. The gap between the material 2 and the peripheral wall 15 is filled with air mortar as the water-permeable grout material 8. An opening (13) is provided for allowing water leakage from the peripheral wall (15) to pass through the permeable grout material (8) and to be discharged.
【００１１】[0011]
【実施例】本発明を図面を参照して実施例により説明す
る。 （１）図１の道路の既設トンネル１の周壁の下部の下盤
１４を整地成形し、反力受けを可能とする。 （２）次いで、既設トンネル１内に側部フレーム材３を
搬入する。ここで、側部フレーム材３は、既設トンネル
１の長さ方向で本例では約５ｍ分の基盤材７上に沿って
間隔をおいて立設、固定されている。また、各側部フレ
ーム材３は、上端において梁材６により連結されてい
る。 （３）上記のように、基盤材７（本例では約５ｍ長さ）
上に設置した側部フレーム材３を、基盤材７単位で一
つ、又は数個既設トンネル１内の長さ方向に沿って所定
位置に設置する。側部フレーム材３の位置決めのため
に、アンカーボルトを用いて、側部フレーム材３を下部
周壁５に固定してもよい。基盤材７をアンカーボルトに
より下盤１４に固定する。 （４）次いで、鋼板製のアーチ材２を既設トンネル１内
に搬入し、側部フレーム３上に載置、設置する。この
際、鋼板製のアーチ材２を既設トンネル１内に通過し易
くするため、縮径した状態にしておいてもよい。鋼板製
のアーチ材２と梁材６との接合は、溶接、ボルト、はめ
込み、等で行う。また、アーチ材２相互の接合は継ぎ目
から漏水がないように溶接接合する。 （５）鋼板製のアーチ材２と上部周壁４との間隙にエア
モルタルを注入する。エアモルタルの落下防止のため、
鉄板により仮設工事を施す。 （６）このように、既設トンネル１の補強個所の全長に
渡って補強の内張工事を完成した。 （７）既設トンネル１内に先ず側部フレーム材３を設置
し、次いでアーチ材２を設置する場合について説明した
が、既設トンネルの規模、補修、補強範囲によっては、
側部フレーム材３とアーチ材２とを予め一体的に構成
し、既設トンネル１内に搬入、設置してもよい。BRIEF DESCRIPTION OF THE DRAWINGS FIG. (1) The lower base 14 of the lower part of the peripheral wall of the existing tunnel 1 of the road shown in FIG. (2) Next, the side frame members 3 are carried into the existing tunnel 1. Here, the side frame members 3 are erected and fixed at intervals along the base member 7 of about 5 m in the present embodiment in the length direction of the existing tunnel 1. Each side frame member 3 is connected at the upper end by a beam member 6. (3) As described above, the base material 7 (about 5 m long in this example)
One or several of the side frame members 3 installed above are installed at predetermined positions along the length direction in the existing tunnel 1 in units of the base material 7. For positioning of the side frame member 3, the side frame member 3 may be fixed to the lower peripheral wall 5 using an anchor bolt. The base material 7 is fixed to the lower plate 14 with anchor bolts. (4) Next, the arch material 2 made of a steel plate is carried into the existing tunnel 1, and placed and installed on the side frame 3. At this time, the diameter may be reduced in order to facilitate the passage of the steel plate arch material 2 into the existing tunnel 1. The joining between the steel plate arch member 2 and the beam member 6 is performed by welding, bolting, fitting, or the like. Also, the arch members 2 are welded together so that there is no water leakage from the joint. (5) Air mortar is injected into the gap between the steel plate arch material 2 and the upper peripheral wall 4. To prevent air mortar from falling
Temporary construction is performed using iron plates. (6) In this way, the lining work of the reinforcement was completed over the entire length of the reinforcement point of the existing tunnel 1. (7) The case where the side frame material 3 is first installed in the existing tunnel 1 and then the arch material 2 is installed has been described. However, depending on the scale, repair, and reinforcement range of the existing tunnel,
The side frame material 3 and the arch material 2 may be integrally formed in advance, and may be carried into the existing tunnel 1 and installed.
【００１２】図３は、側部フレーム材３として鋼板を用
いる場合を示し、図１の柱材を用いる場合に準じて実施
することができる。側部フレーム材３の下端に周壁の漏
水の排水するための開口１３を設ける。上述で、既設ト
ンネル１内に先ず側部フレーム材３を設置し、次いでア
ーチ材２を搬入する場合を示す。図３の場合は、側部フ
レーム材３とアーチ材２とが鋼板製であることから、次
のようにしてもよい。側部フレーム材３の下端部を分割
し、その分割した下端部を、先端に裏当金を固定して、
既設トンネル１内の下盤１４に固定する。次いで、前記
下端部を除く側部フレーム材３と、アーチ材２とを結合
し、縮径して既設トンネル１内に導入し、下盤１４に設
置した前記下端部の裏当金を介して全体を一体化する。
図４の場合は、アーチ材２を一体にして既設トンネル１
内に設置してもよい。FIG. 3 shows a case where a steel plate is used as the side frame member 3, and can be implemented according to the case where the column member of FIG. 1 is used. At the lower end of the side frame member 3, an opening 13 for draining water leakage from the peripheral wall is provided. As described above, the case where the side frame material 3 is first installed in the existing tunnel 1 and then the arch material 2 is carried in is shown. In the case of FIG. 3, since the side frame member 3 and the arch member 2 are made of a steel plate, the following may be performed. The lower end of the side frame member 3 is divided, and the divided lower end is fixed with a backing metal at the end,
It is fixed to the lower plate 14 in the existing tunnel 1. Next, the side frame member 3 excluding the lower end portion and the arch material 2 are combined, reduced in diameter, and introduced into the existing tunnel 1, and are mounted on the lower panel 14 through the backing metal of the lower end portion. Integrate the whole.
In the case of FIG. 4, the arch material 2 is integrated with the existing tunnel 1.
It may be installed inside.
【００１３】[0013]
（１）本発明の内張構造では、既設トンネルから漏水が
あっても、透水性グラウト材を介して地下水を容易に外
部に排水でき、地下水による水圧はアーチ材等に作用し
ないので、補強構造の設計において地下水による水圧を
考慮する必要がない。従って、設計条件が有利になり、
アーチ材を薄くできるとともに側部フレームの部材断面
を小さくでき、補強構造の材料厚を大幅に節減できるメ
リットがある。内張構造として構造材料上それだけ上荷
重、上載荷重に有利に機能することになる。 （２）本発明は、内張施工の完成後のトンネルの内空の
断面減少を少なくするでき、内張構造のために占める空
間が少なくて済むので、既設トンネルの車輛限界を有利
に確保できる。 （３）本発明は、上部周壁部に一切穴のない鋼板製のア
ーチ材を設けているため、既設トンネルの損傷個所によ
る漏水を十分に防止し、冬季における氷柱（つらら）の
発生を回避することができる。 （４）施工が安全で、しかも工費、工期の点で有利であ
る。(1) In the lining structure of the present invention, even if there is water leakage from the existing tunnel, the groundwater can be easily drained to the outside through the permeable grout material, and the water pressure due to the groundwater does not act on the arch material and the like, so the reinforcing structure There is no need to consider the water pressure due to groundwater in the design. Therefore, the design conditions become advantageous,
There is an advantage that the arch material can be made thinner, the member cross section of the side frame can be made smaller, and the material thickness of the reinforcing structure can be greatly reduced. As the lining structure, the structural material functions advantageously for the upper load and the upper load. (2) According to the present invention, the reduction of the cross section of the inner space of the tunnel after the completion of the lining work can be reduced, and the space occupied by the lining structure can be reduced, so that the vehicle limit of the existing tunnel can be advantageously secured. . (3) In the present invention, since the upper peripheral wall is provided with a steel plate arch material having no hole at all, water leakage due to a damaged portion of the existing tunnel is sufficiently prevented, and icicles (icicles) are avoided in winter. be able to. (4) Construction is safe and advantageous in terms of construction cost and construction period.
【図１】本発明の実施例を説明する図である。FIG. 1 is a diagram illustrating an embodiment of the present invention.
【図２】本発明において、鋼板製のアーチ材の下端にフ
ランジ材を固定した場合を示す図であるFIG. 2 is a view showing a case where a flange material is fixed to a lower end of a steel plate arch material in the present invention.
【図３】本発明の他の実施例を説明する図である。FIG. 3 is a diagram for explaining another embodiment of the present invention.
【図４】本発明において、鋼板製の側部フレーム材に補
強材を結合した場合を示す図であるFIG. 4 is a diagram showing a case where a reinforcing material is joined to a side frame member made of a steel plate in the present invention.
【図５】本発明の別の実施例を説明する図である。FIG. 5 is a diagram illustrating another embodiment of the present invention.
【図６】従来の技術を示す図であるFIG. 6 is a diagram showing a conventional technique.
１ 既設トンネル ２ アーチ材 ３ 側部フレーム材 ４ 上部周壁 ５ 下部周壁 ６ 梁材 ７ 基盤材 ８ 透水性グラウト材 ９ アンカーボルト １０ モルタル注入孔 １１ 空気抜き孔 １２ フランジ材 １３ 開口 １４ 下盤 １５ 周壁 １６ 当て板 １７ 既設覆工 １８ アンカーボルト DESCRIPTION OF SYMBOLS 1 Existing tunnel 2 Arch material 3 Side frame material 4 Upper peripheral wall 5 Lower peripheral wall 6 Beam material 7 Base material 8 Water-permeable grout material 9 Anchor bolt 10 Mortar injection hole 11 Air vent hole 12 Flange material 13 Opening 14 Lower base 15 Peripheral wall 16 Plate 17 Existing lining 18 Anchor bolt
Claims (6)
のアーチ材を設け、該上部周壁に下方に連続する下部周
壁に沿って該アーチ材に鋼製の側部フレーム材を接合
し、該側部フレーム材は、上端において該アーチ材を支
持し、下端を下盤に対して固定し、該アーチ材と該上部
周壁の間の隙間に透水性グラウト材を充填し、該上部周
壁からの漏水を該透水性グラウト材内を通過させて該ア
ーチ材の下端から排出するようにしたことを特徴とする
既設トンネルの内張構造。1. An arch material made of a steel plate is provided along an upper peripheral wall of an existing tunnel, and a steel side frame material is joined to the arch material along a lower peripheral wall continuing downward from the upper peripheral wall. The side frame material supports the arch material at the upper end, fixes the lower end to the lower plate, fills a gap between the arch material and the upper peripheral wall with a water permeable grout material, and A lining structure of an existing tunnel, characterized in that water leakage is passed through the permeable grout material and discharged from a lower end of the arch material.
の長手方向に間隔をおいて設けた柱材により形成するこ
とを特徴とする請求項１記載の既設トンネルの内張構
造。2. The lining structure of an existing tunnel according to claim 1, wherein the steel side frame member is formed by pillars provided at intervals in the longitudinal direction of the existing tunnel.
チ材に接合する鋼板により形成することを特徴とする請
求項１記載の既設トンネルの内張構造。3. The lining structure of an existing tunnel according to claim 1, wherein the steel side frame member is formed by a steel plate joined to a steel plate arch member.
上部周壁の間の隙間を仕切るフランジ材を固定し、該フ
ランジ材に又は該アーチ材の下端に上部周壁からの漏水
を排出するための開口を設けたことを特徴とする請求項
２、又は請求項３記載の既設トンネルの内張構造。4. A flange member for partitioning a gap between the arch material and the upper peripheral wall is fixed to a lower end of the steel plate arch material, and water leakage from the upper peripheral wall is discharged to the flange material or to the lower end of the arch material. The lining structure of an existing tunnel according to claim 2 or 3, wherein an opening is provided.
鋼板製の側部フレーム材と下部周壁の間の隙間の少なく
とも鋼板製のアーチ材と上部周壁の間の隙間に透水性グ
ラウト材を充填し、周壁からの漏水を該透水性グラウト
材内を通過させて排出するための開口を、該透水性グラ
ウト材の下端近傍の前記アーチ材又は側部フレーム材の
鋼板に設けたことを特徴とする請求項３記載の既設トン
ネルの内張構造。5. A water permeable grout material at least in a gap between the steel plate arch material and the upper peripheral wall and in a gap between the steel plate side frame material and the lower peripheral wall at least between the steel plate arch material and the upper peripheral wall. And an opening for discharging water leakage from the peripheral wall through the permeable grout material and discharging the water is provided in the steel plate of the arch material or the side frame material near the lower end of the permeable grout material. The lining structure of an existing tunnel according to claim 3, wherein:
ンネルの周壁に沿って鋼板製のアーチ材を設け、該アー
チ材の下端を下盤に対して固定し、該アーチ材と該周壁
の間の隙間に透水性グラウト材を充填し、該周壁からの
漏水を該透水性グラウト材内を通過させて排出するため
の開口を、該アーチ材の下端に設けたことを特徴とする
既設トンネルの内張構造。6. An arch material made of a steel plate is provided along a peripheral wall of an existing tunnel in which the entire peripheral wall is constructed in an arcuate arch shape, and a lower end of the arch material is fixed to a lower plate. An existing tunnel provided with an opening at a lower end of the arch material for filling a gap between the permeable grout material and discharging water leaking from the peripheral wall through the permeable grout material. Lining structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35374096A JP3367013B2 (en) | 1996-12-18 | 1996-12-18 | Existing tunnel lining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35374096A JP3367013B2 (en) | 1996-12-18 | 1996-12-18 | Existing tunnel lining structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10176488A true JPH10176488A (en) | 1998-06-30 |
| JP3367013B2 JP3367013B2 (en) | 2003-01-14 |
Family
ID=18432905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35374096A Expired - Fee Related JP3367013B2 (en) | 1996-12-18 | 1996-12-18 | Existing tunnel lining structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3367013B2 (en) |
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| KR20030096697A (en) * | 2002-06-17 | 2003-12-31 | 허정원 | A tunnel lining structure system using curved corrugated steel plates and consrution method therof |
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| CN102877859A (en) * | 2012-09-28 | 2013-01-16 | 广东省长大公路工程有限公司 | End mould structure for tunnel secondary lining and mounting method thereof |
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