JP3367013B2 - Existing tunnel lining structure - Google Patents
Existing tunnel lining structureInfo
- Publication number
- JP3367013B2 JP3367013B2 JP35374096A JP35374096A JP3367013B2 JP 3367013 B2 JP3367013 B2 JP 3367013B2 JP 35374096 A JP35374096 A JP 35374096A JP 35374096 A JP35374096 A JP 35374096A JP 3367013 B2 JP3367013 B2 JP 3367013B2
- Authority
- JP
- Japan
- Prior art keywords
- arch
- peripheral wall
- existing tunnel
- side frame
- water
- 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 - Fee Related
Links
Landscapes
- Lining And Supports For Tunnels (AREA)
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。TECHNICAL FIELD The present invention relates to roads, railways, etc.
This is related to the lining structure for repairing / reinforcing old and damaged existing tunnels and preventing 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５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 repairing method for an existing tunnel, there is a method in which the lining is replaced and the concrete is re-placed through the existing lining. As another method, there is a method by wear plate 16 as part repair of the existing tunnel 1 shown in FIG. In this construction method, a contact plate 16 is applied to the damaged portion of the existing lining 17 of the tunnel, and anchor bolts 18 are driven to fix the same. When the existing lining 17 is severely damaged, a long anchor bolt 18 is required to make the supporting force of the pad plate 16 sufficient.
【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。The former construction method by lining replacement work is reliable in securing the lining thickness and is economical.
The safety of temporary vehicles and workers becomes a problem when lining. The anchor bolt 1
Since the driving of No. 8 forms a water channel for water leakage and promotes the water leakage, and the anchor bolt 18 is driven to the originally aged place, the reliability as an anchor bolt may not be exhibited. There is a problem as a reinforcing 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。According to the present invention, water leakage due to damage to an existing tunnel can be sufficiently prevented, cross-sectional reduction of the inside of the tunnel after completion of lining can be reduced, and only earth load and top load can be borne without bearing water pressure due to water leak. It is an object of the present invention to provide a lining structure for an existing tunnel that 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
既設トンネルの長手方向に間隔をおいて設けた柱材から
なる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。The present invention has been made to solve the above problems, and is configured as follows. The lining structure of the existing tunnel of the present invention is provided with an arch member made of a steel plate along the upper peripheral wall of the existing tunnel, and the arch member is provided along the lower peripheral wall continuous downward to the upper peripheral wall.
From pillars provided at intervals in the longitudinal direction of the existing tunnel
The steel side frame member is joined to the side frame member, the side frame member supports the arch member at the upper end, and the lower end is fixed to the lower plate, and the gap is formed between the arch member and the upper peripheral wall. It is constituted by filling a water-permeable grout material, and letting water leaking from the upper peripheral wall pass through the water-permeable grout material and be 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により形成する。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し、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。 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 or a railroad. The existing tunnel lining structure of the present invention can be used for repairing, reinforcing, or preventing water leakage of an existing tunnel. Regarding the upper peripheral wall and the lower peripheral wall that form the upper and lower peripheral walls of the existing tunnel, 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 maximum, or It can be defined 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 position is at the lowest end portion of the arch-shaped peripheral wall, that is, at the uppermost end portion of the vertical peripheral wall, or in the vicinity thereof, where the horizontal width inside the arch-shaped peripheral wall is maximum. It is preferable that the steel arch member has a shape similar to the shape of the peripheral wall of the existing tunnel. In addition, the gap between the steel arch member and the peripheral wall is only required to ensure a space for smoothly injecting the water-permeable grout material, which is the backfill material. The steel side frame material is
Which supports the steel arch, more forming the pillar material provided at intervals in the longitudinal direction of the existing tunnel. When the side frame material made of steel is formed of a pillar material, a material such as a shaped steel or a pipe is used as the pillar material. When the side frame member made of steel is formed by the entire steel plate, the steel plate may be provided with a reinforcing material such as a reinforcing rib. Water permeability grout filled only in the gap between the steel arch member and the top wall, the lower end of the steel arch member, to fix the flange member for partitioning the gap between the arch member and the top wall, the flange The material or the lower end of the arch material is provided with an opening for draining water leakage from the upper peripheral wall after construction. However, the present invention is not limited to such a form of the flange material, and a temporary material may be installed at the lower end of the arch material to prevent the water-permeable grout material from dropping during casting. Water is discharged from the lower end of the arch material through the opening provided in the flange material or the lower end of the arch material as described above, or is made to flow down from the water-permeable grout material itself at the lower end of the arch material. Including the case of discharging to outside . The permeable water grout, can be used air mortar, the foam mortar. After the construction, the leaked water from the peripheral wall passes through the water-permeable grout material and is discharged to the outside. As a result, in the design of the lining structure of the present invention, it is not necessary to consider the water pressure received by groundwater, and the material thickness of the lining structure can be significantly 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 overburden is 35 m. ), The stress analysis of the steel sheet by the finite element method is performed using ordinary mortar, the steel sheet thickness of the arch portion is 26 mm. On the other hand, when the water-permeable mortar is used in the present invention and the reinforcing structure is sufficient for draining, the steel plate thickness of the arch portion is 14 mm. In this way, the material thickness of the reinforcing structure is significantly reduced (46% reduction in this example). For injection of the water-permeable grout material, mortar injection holes and air vent holes are appropriately provided in the arch material and the side frame material.
【０００７】[0007]
【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。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 shows an embodiment of a lining structure for reinforcing an existing road tunnel and preventing water leakage according to the present invention. In the lining structure of the existing tunnel 1, an arch member 2 made of a steel plate is provided along the upper peripheral wall 4 in which the crack a of the existing tunnel 1 is formed, and is provided along the lower peripheral wall 5 continuous to the upper peripheral wall 4 below. 2 shows a side frame member 3 made of steel. Side frame material 3
Is formed of channel steel in this example, and joins the beam member 6 at the upper end and supports the arch member 2 via the beam member 6. Further, the side frame member 3 is joined 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 member 2 and the upper peripheral wall 4 is filled with a water-permeable grouting material 8 made of air mortar, and water leakage from the upper peripheral wall 4 is passed through the water-permeable grouting material 8 and discharged from the lower end of the arch material 2. To do so. Anchor bolts 9 are used to fix the base material 7 to the lower board 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. Further, in this example, in order to prevent the poured mortar from falling, a temporary material (not shown) is installed at the lower end of the arch material 2 during construction. FIG. 2 shows a case where a flange material 12 for partitioning a gap between the arch material 2 and the upper peripheral wall 4 is fixed in order to prevent the poured mortar from falling. Further, the flange member 12 is provided with an opening 13 for discharging water leaking from the upper peripheral wall 4.
【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 example of the present invention for reinforcing an existing railway tunnel and lining structure for water leakage. In the lining structure of the existing tunnel 1, a steel plate arch member 2 provided along the upper peripheral wall 4 of the existing tunnel 1 and a steel plate side provided along the lower peripheral wall 5 continuous to the upper peripheral wall 4 below. The partial frame material 3 is shown. The side frame member 3 made of steel plate is
The arch member 2 is supported at the upper end, and the lower plate 1 is provided at the lower end.
Fixed to 4. When the arch material 2 and the side frame material 3 are integrated on site, the side frame material 3 having a backing metal (not shown) fixed to the tip is pre-positioned with the anchor bolts with respect to the lower peripheral wall 5. Alternatively, the arch member 2 may be placed and fixed on the side frame member 3. In this case, an anchor bolt is used, but since it is the lower peripheral wall 5, even if water leaks, it will flow down immediately,
There is no harm due to the formation of icicles. It should be noted that the joint portion of the steel plate structure that forms the steel arch member 2 and the steel side frame material 3 does not need to be provided at the above-described boundary portion between the arch material 2 and the side frame material 3. . It may be provided at another location for convenience of construction. A gap between the steel arch member 2 and the upper peripheral wall 4 and a gap between the steel side frame member 3 and the lower peripheral wall 5 are filled with a water-permeable grout material 8 made of foamed mortar, and the upper peripheral wall 4 An opening 13 is provided at the lower end of the side frame member to allow water leaking from the lower peripheral wall 5 to pass through the water permeable grout material 8 and be discharged. FIG. 4 shows an example in which a steel plate which is the side frame material 3 is attached with a reinforcing material 3a such as a reinforcing rib material such as shaped steel. Also in FIGS. 3 and 4, a mortar injection hole and an air vent hole for injecting foamed mortar as a water-permeable grout material,
Properly provided as in FIG.
【００１０】[0010]
【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。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings. (1) The lower plate 14 of the lower part of the peripheral wall of the existing tunnel 1 of the road shown in FIG. 1 is grounded to enable reaction force reception. (2) Next, the side frame member 3 is carried into the existing tunnel 1. Here, the side frame members 3 are erected and fixed at intervals along the length of the existing tunnel 1 along the base member 7 of about 5 m in this example. Further, the side frame members 3 are connected by beam members 6 at the upper ends. (3) As described above, the base material 7 (about 5 m long in this example)
One or several side frame materials 3 installed on the base material 7 are installed at predetermined positions along the length direction in the existing tunnel 1. For positioning the side frame material 3, the side frame material 3 may be fixed to the lower peripheral wall 5 by using anchor bolts. 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 set on the side frame 3. At this time, in order to facilitate passage of the steel plate arch material 2 into the existing tunnel 1, the diameter may be reduced. The arch material 2 made of a steel plate and the beam material 6 are joined by welding, bolting, fitting, or the like. Further, the arch members 2 are welded to each other so that there is no water leakage from the joint. (5) Air mortar is injected into the gap between the steel arch member 2 and the upper peripheral wall 4. To prevent the air mortar from falling,
Temporary construction is performed using an iron plate. (6) In this way, the reinforcement lining work was completed over the entire length of the reinforcement portion 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 member 3 and the arch member 2 may be integrally configured in advance and carried in and installed in the existing tunnel 1.
【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 the side frame member 3 can be implemented in accordance with the case where the column member of FIG. 1 is used. An opening 13 is provided at the lower end of the side frame member 3 for draining water leakage from the peripheral wall. In the above, the case where the side frame member 3 is first installed in the existing tunnel 1 and then the arch member 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 steel plates, the following may be performed. The lower end of the side frame member 3 is divided, the divided lower end is fixed to the tip with a backing metal,
It is fixed to the lower panel 14 in the existing tunnel 1. Next, the side frame material 3 excluding the lower end portion and the arch material 2 are combined, reduced in diameter and introduced into the existing tunnel 1, and through the backing metal of the lower end portion installed on the lower plate 14. Integrate the whole.
In the case of FIG. 4, the arch material 2 is integrated into 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, groundwater can be easily drained to the outside through the permeable grout material, and the water pressure due to groundwater does not act on the arch material, etc. There is no need to consider the water pressure due to groundwater in the design. Therefore, the design condition becomes advantageous,
There is an advantage that the arch material can be made thin and the member cross section of the side frame can be made small, and the material thickness of the reinforcing structure can be significantly reduced. As a lining structure, the structural material will function as much as an upper load and an upper load. (2) The present invention can reduce the reduction of the cross section of the inside of the tunnel after the completion of the lining construction, 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) According to the present invention, since the steel plate arch material having no holes is provided on the upper peripheral wall portion, water leakage due to a damaged portion of the existing tunnel is sufficiently prevented, and icicles (icicles) are not generated in winter. be able to. (4) Construction is safe, and it is 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 example 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 member is fixed to a lower end of a steel plate arch member 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 illustrating 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 view showing a case where a reinforcing member is joined to a side frame member made of a steel plate in the present invention.
【図５】従来の技術を示す図であるFIG. 5 is a diagram showing a conventional technique.
【符号の説明】 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[Explanation of symbols] 1 Existing tunnel 2 arch material 3 side frame material 4 Upper peripheral wall 5 Lower peripheral wall 6 beam materials 7 Base material 8 Water-permeable grout material 9 Anchor bolt 10 Mortar injection hole 11 Air vent hole 12 Flange material 13 openings 14 Lower plate 15 Perimeter wall 16 Patch 17 Existing lining 18 Anchor bolt
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平６−299790（ＪＰ，Ａ) 特開 平５−10096（ＪＰ，Ａ) 実開 昭62−196299（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) E21D 11/00 - 11/38 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-6-299790 (JP, A) JP-A-5-10096 (JP, A) Actual development Sho 62-196299 (JP, U) (58) Field (Int.Cl. 7 , DB name) E21D 11/00-11/38
Claims (2)
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既設トンネルの長手方向に間隔
をおいて設けた柱材からなる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 the arch material is spaced along the lower peripheral wall continuous to the upper peripheral wall in the longitudinal direction of the existing tunnel.
A steel side frame member made of a pillar material provided with is joined, the side frame member supports the arch member at the upper end, and the lower end is fixed to the lower plate. An existing facility characterized in that a gap between the upper peripheral walls is filled with a water-permeable grout material, and water leaking from the upper peripheral wall is passed through the water-permeable grout material and discharged from a lower end of the arch material. Tunnel lining structure.
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
１記載の既設トンネルの内張構造。2. A flange member for partitioning a gap between the arch member and the upper peripheral wall is fixed to the lower end of the steel arch member, and water leakage from the upper peripheral wall is discharged to the flange member or to the lower end of the arch member. An opening is provided for
The existing tunnel lining structure described in 1 .
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 JPH10176488A (en) | 1998-06-30 |
| JP3367013B2 true 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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-
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| CN111648793A (en) * | 2020-04-24 | 2020-09-11 | 高军 | Small clear distance overlapping tunnel construction method |
| CN111648793B (en) * | 2020-04-24 | 2022-03-04 | 高军 | Small clear distance overlapping tunnel construction method |
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| Publication number | Publication date |
|---|---|
| JPH10176488A (en) | 1998-06-30 |
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