JPS63261099A - Method of constructing tunnel and member for constructing tunnel - Google Patents
Method of constructing tunnel and member for constructing tunnelInfo
- Publication number
- JPS63261099A JPS63261099A JP62094159A JP9415987A JPS63261099A JP S63261099 A JPS63261099 A JP S63261099A JP 62094159 A JP62094159 A JP 62094159A JP 9415987 A JP9415987 A JP 9415987A JP S63261099 A JPS63261099 A JP S63261099A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- flange
- waterproof sheet
- mounting bracket
- tunnel
- 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
- 238000000034 method Methods 0.000 title description 11
- 239000004567 concrete Substances 0.000 claims description 40
- 238000010276 construction Methods 0.000 claims description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 230000003014 reinforcing effect Effects 0.000 claims description 25
- 230000002787 reinforcement Effects 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 8
- 239000011378 shotcrete Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 238000005507 spraying Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、道路、鉄道、下水道などの建設のために掘
削されるトンネルの構築法と、このトンネルの構築のた
めに使用するトンネル構築用部材に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for constructing tunnels excavated for the construction of roads, railways, sewers, etc., and a method for constructing tunnels used for constructing the tunnels. It is related to members.
山岳トンネルの構築法の一つとしてＮＡＴＭ工法（Ｎｅ
ｗ Ａｕ５ｔｒｉａｎ Ｔｕｎｎｅｌｌｉｎｇ Ｍｅｔ
ｈｏｄ）と称する支保工が実用化されている。One of the construction methods for mountain tunnels is the NATM method (Ne
w Au5trian Tunneling Met
A type of shoring called ``hod'' has been put into practical use.
このＮＡＴＭ工法は、掘削後直ちに他山を吹付はコンク
リートやロックボルトで補強し、一体化することによっ
て地山の有する耐荷力をトンネル構造体の一部に取り入
れて活用する方法で２ トンネル設計、施工の合理化、
システム化の点で優れた利点を有している。This NATM construction method is a method in which the load-bearing capacity of the ground is incorporated into a part of the tunnel structure by reinforcing the other ground with shotcrete or rock bolts immediately after excavation, and integrating it to incorporate the load-bearing capacity of the ground into a part of the tunnel structure. Streamlining construction,
It has excellent advantages in terms of systemization.
か＼るＮＡＴＭ法の利点を生かし、かつ一層トンネルの
強度の増加２作業能率の向上およびトンネル内漏水の防
止等の目的で、このＮＡＴＭ工法に対して型鋼によるア
ーチ式支保工をコンバインし、さらにこのアーチ式支保
工のアーチの内側部分に軟質合成樹脂やゴムによって形
成した防水シートを張設したトンネル構築法が実施され
るようになっている。In order to take advantage of the advantages of the NATM method, and further increase the strength of the tunnel, improve work efficiency, and prevent water leakage inside the tunnel, we combined the NATM construction method with arch-type shoring using shaped steel. A tunnel construction method has been implemented in which a waterproof sheet made of soft synthetic resin or rubber is stretched over the inner side of the arch of this arch type shoring.
か−るＮＡＴＭ工法にアーチ式支保工と防水シートの張
設とをコンバインした工法は、ＮＡＴＭ工法によって形
成した一次覆工の内面に適宜の間隔で型！１４（Ｈ型鋼
）によるアーチ式支保工を架設すると共に、この支保工
におけるＨ型鋼の内側フランジにスタンドボルトを溶接
その他の方法で取付けた後、吹付コンクリートによる二
次覆工を施工する。This construction method combines the NATM construction method with arch-type shoring and the installation of waterproof sheets.The construction method combines the construction of arch-type shoring and the installation of waterproof sheets. After erecting an arch-type shoring made of No. 14 (H-shaped steel) and attaching stand bolts to the inner flange of the H-shaped steel in this shoring by welding or other methods, a secondary lining with shotcrete is constructed.
ついで、アーチ式支保工におけるＨ型鋼のフランジ部に
固定したスタンドボルトに、防水シートの所定の部位に
予め穿設した孔を係合させ、しかるのちスタンドボルト
に座金を介してナンドを締付けて、前記防水シートを二
次覆工で形成したコンクリート面に沿って張設し、この
防水シートの内側において前記スタットボルトに縦筋、
横筋等の配筋を実施し、さらにこの配筋部分を吹付はコ
ンクリートによって覆工してトンネルの構築を行ってい
る。Next, the stand bolts fixed to the flange part of the H-shaped steel in the arch-type shoring are engaged with the holes drilled in advance in the predetermined parts of the waterproof sheet, and then the bolts are tightened to the stand bolts with washers, The waterproof sheet is stretched along the concrete surface formed by the secondary lining, and the stud bolts are provided with longitudinal stripes on the inside of the waterproof sheet.
The tunnel is constructed by placing reinforcement such as transverse reinforcement and lining the reinforcement with sprayed concrete.
か＼る従来のトンネル構築方法は、防水シートの張設に
際して、アーチ支保工を形成するＨ型鋼のフランジ部に
スタンドボルトを溶接等の手段によって固定し、このス
タンドボルトに防水シートの端縁部に予め穿設した係合
孔を係合させているため、Ｈ型鋼へのスタットボルトの
取付は固定がきわめて煩瑣であると共に、特に高い位置
でのスタットボルトの固定作業の場合、能率が悪く、溶
接の際の危険性も多い。In the conventional tunnel construction method, when installing a waterproof sheet, stand bolts are fixed by means such as welding to the flange of the H-shaped steel that forms the arch support, and the end edges of the waterproof sheet are fixed to the stand bolts by means such as welding. Since the stud bolts are engaged with pre-drilled engagement holes in the H-shaped steel, it is extremely difficult to fix them, and the work is particularly inefficient when fixing the stud bolts at high positions. There are many dangers during welding.
また、スタットボルトへの防水シートの取付けには、予
め防水シートの端縁部に保合のための孔を穿設する必要
があるので、この孔から漏水が生じて充分な漏水防止を
行うことができない。In addition, in order to attach the waterproof sheet to the stud bolt, it is necessary to drill a hole in the edge of the waterproof sheet in advance for securing purposes, so please take sufficient measures to prevent water from leaking from this hole. I can't.
また、コンクリート打設時等において防水シートにか＼
る荷重によって防水シートに設けた孔が引き伸ばされ、
この孔から防水シートが引き裂かれて漏水の増大を招く
という問題があった。Also, when placing concrete, etc., it may be used as a waterproof sheet.
The holes made in the waterproof sheet are stretched by the load.
There was a problem in that the waterproof sheet was torn from this hole, leading to increased leakage of water.
この発明はか−る在来法の欠点に鑑み、一次覆工による
コンクリート層の表面を覆う防水シートに一切の加工を
施すことなく、防水シートをアーチを構成するＨ型鋼の
フランジに簡単かつ容易に取付け、完全な防水を行うと
共に、前記コンクリート層に対する防水シートの張設を
能率的に実施することのできるトンネル構造体及びトン
ネル構築用部材を開発したものである。In view of the shortcomings of the conventional method, this invention has been developed to simply and easily attach the waterproof sheet to the flange of the H-beam steel that constitutes the arch, without performing any processing on the waterproof sheet that covers the surface of the concrete layer by the primary lining. The present invention has developed a tunnel structure and a tunnel construction member that can be attached to a concrete layer, completely waterproof, and efficiently extend a waterproof sheet to the concrete layer.
すなわち、第１の発明は掘削したトンネル内面を吹付は
コンクリート等を主たる支保部材として初期一次覆工を
行なうと共に、その内側に所定の間隔をおいてＨ型鋼に
よるアーチ支保工を形成し。That is, in the first invention, an initial primary lining is performed on the inner surface of an excavated tunnel using sprayed concrete as the main supporting member, and arch supports made of H-beam steel are formed at predetermined intervals inside the lining.
このアーチ支保工におけるＨ型鋼の一方のフランジ部に
取付金具をウェッジで固定したのち、前記Ｈ型鋼の一方
のフランジ面までコンクリートを吹付けて後期一次覆工
によるコンクリート層を形成し、ついで前記取付金具の
張出縁を有する脚部に前記コンクリート層の表面を覆う
防水シートの一部を当接し、しかるのちその外側を左右
一対の抑え部材からなるシート抑え金具で掴持し、防水
シートを取付金具の脚部に固定し、前記コンクリ−゛ト
層の表面に防水シートを張設し、その後前記シート抑え
金具に着脱自在に取付けた羽子板ボルトの一端に吊下鉄
筋を取付け、この吊下鉄筋を利用して前記防水シートの
表面に配筋し、以後この配筋部に吹付はコンクリートに
よる二次覆工を施工することを特徴とするトンネル構築
法である。After fixing the mounting bracket to one flange of the H-shaped steel in this arch shoring with a wedge, concrete is sprayed up to one flange surface of the H-shaped steel to form a concrete layer for the later primary lining, and then the above-mentioned installation is completed. A part of the waterproof sheet covering the surface of the concrete layer is brought into contact with the legs having projecting edges of the metal fittings, and then the outside of the waterproof sheet is held by sheet holding fittings consisting of a pair of left and right holding members, and the waterproof sheet is attached. A waterproof sheet is fixed to the legs of the metal fittings, and a waterproof sheet is stretched over the surface of the concrete layer, and then a hanging reinforcing bar is attached to one end of the battledore bolt that is detachably attached to the sheet holding fitting. This tunnel construction method is characterized by arranging reinforcement on the surface of the waterproof sheet using the method, and then constructing a secondary lining of sprayed concrete on the reinforcement portion.
また、第２の発明はアーチ支保工を形成するためのＨ型
鋼におけるフランジ面と当接する基板の一端部を上方に
折曲げて前記フランジの厚さよりも高い側板を形成する
と共に、側板の先端部を基板と平行に折曲して上面板と
した断面コ字状部材を形成し、この断面コ字状部材の他
端部を下方に折曲げて脚部とすると共に、この脚部の先
端部に左右方向に突出する張出縁を設け、かつ前記側板
と上面板との連設部に切欠部を設けた取付金具と。Further, the second invention is to bend one end of the substrate that contacts the flange surface of the H-shaped steel for forming the arch support upwards to form a side plate that is higher than the thickness of the flange, and to is bent parallel to the substrate to form a member with a U-shaped cross section as an upper plate, and the other end of this U-shaped member is bent downward to form a leg, and the tip of this leg is a mounting bracket having an overhanging edge projecting in the left-right direction, and a notch provided in a continuous portion between the side plate and the top plate;
前記取付金具の切欠部に挿入し、取付金具をＨ型鋼のフ
ランジ面に固定するためのウェッジと、前記取付金具の
各張出縁と係合する湾曲部を有する左右一対のシート抑
え金具と、前記シート抑え金具の脚部に取付けられる羽
子板ボルトと、一端部に前記羽子板ボルトを、他端に吊
下鉄筋をそれぞ・れ螺着するナンドとから構成されるこ
とを特徴とするトンネル構築用部材である。a wedge for inserting into the notch of the mounting bracket and fixing the mounting bracket to the flange surface of the H-shaped steel; and a pair of left and right seat restraints having curved parts that engage with respective projecting edges of the mounting bracket; For tunnel construction, characterized in that it is composed of a battledore bolt attached to the leg of the sheet restraint fitting, and a nand to which the battledore bolt is screwed to one end and a suspension reinforcing bar is screwed to the other end. It is a member.
第１の発明におけるトンネル構築法は、地山１を穿孔し
て掘削したトンネル内壁に一次覆工によるコンクリート
層２を形成し、このコンクリート層２の表面にＨ型鋼３
を使用してアーチ支保工を形成したのち、Ｈ型ｆｉ３の
トンネル中心側に位置する一方のフランジ３１に取付金
具４をウェッジ５で固定し、しかるのち前記フランジ３
１の表層を顕出させてＨ型銅３内にコンクリートを吹付
けることによってコンクリートＮ２１を形成し、フラン
ジ３１に取付金具４を完全に固定する。The tunnel construction method in the first invention involves forming a concrete layer 2 with a primary lining on the inner wall of the tunnel excavated by drilling through the ground 1, and forming an H-shaped steel 3 on the surface of this concrete layer 2.
After forming an arch support using
Concrete N21 is formed by exposing the surface layer of H-shaped copper 3 and spraying concrete into the H-shaped copper 3, and the mounting bracket 4 is completely fixed to the flange 31.
その際、取付金具４はフランジ３１の先端縁部を係合す
るよう断面がコ字状となっているので。At this time, the mounting bracket 4 has a U-shaped cross section so as to engage the tip edge of the flange 31.
当該コ字状部を先端縁部に沿って移動させることによっ
て所望の位置を自在に選定することができる。A desired position can be freely selected by moving the U-shaped portion along the tip edge.
しかも、前記取付金具４のフランジ３１への取付けは、
取付金具４に形成した切欠部４６にウェッジ５をハンマ
ー等で押し込むだけでよい。Moreover, the attachment of the mounting bracket 4 to the flange 31 is as follows:
It is sufficient to simply push the wedge 5 into the notch 46 formed in the mounting bracket 4 with a hammer or the like.
前記Ｈ型鋼３へのコンクリートの吹付は作業が終了すれ
ば、形成されたコンクリート層２１の表面に、前記Ｈ型
鋼３を包含して防水シート１０を張設するものである。When the spraying of concrete onto the H-shaped steel 3 is completed, a waterproof sheet 10 is stretched over the surface of the formed concrete layer 21, covering the H-shaped steel 3.
この発明の方法に使用する防水シート１０は一切の前処
理を必要とせず、単にＨ型鋼３のフランジ３１に固定さ
れた取付金具４の脚部４４に防水シー）１０の一部を係
合せしめ、その外側をシート抑え金具６によってクリッ
プするだけで、コンクリート層２１の表面全体に簡単か
つ容易に防水シート１０を張設することができる。The waterproof sheet 10 used in the method of the present invention does not require any pretreatment, and a portion of the waterproof sheet 10 is simply engaged with the leg portion 44 of the mounting bracket 4 fixed to the flange 31 of the H-shaped steel 3. The waterproof sheet 10 can be simply and easily stretched over the entire surface of the concrete layer 21 by simply clipping the outside with the sheet holding fittings 6.
ついで、前記シート抑え金具６の脚部にボルト８１とナ
ツト８２で固定した羽子板ボルト７に筒状のナツト９の
一端部を螺着し、このナツト９の他端部に吊下鉄Ｗ１４
の基端部を螺着し、吊下鉄筋１４所定の位置に二次覆工
の際の配筋１５，１５・・・を強固に固定し、この配筋
部分にコンクリートを吹付けることによって、コンクリ
ート層２２を形成すれば、最終的に崩落の危険のない優
れた強度のトンネルを構築することができるものである
。Next, one end of the cylindrical nut 9 is screwed onto the battledore bolt 7 which is fixed to the leg portion of the sheet holding metal fitting 6 with a bolt 81 and a nut 82, and a hanging iron W14 is attached to the other end of this nut 9.
By screwing the base end of the suspension reinforcing bars 14, firmly fixing the reinforcing bars 15, 15, etc. for secondary lining to the predetermined positions of the hanging reinforcing bars 14, and spraying concrete on this reinforcing part, By forming the concrete layer 22, it is possible to finally construct a tunnel with excellent strength without the risk of collapse.
一方、第２の発明のトンネル構築用部材における取付金
具４は、側板４２をＨ型ｗ４３のフランジ３１の肉厚よ
りも高く形成し、かつ側板４２と上面板４３の連設部に
切欠部４６を設けたので、その基板４１をフランジ３１
の底面部と当接させて断面コ字状部にフランジ３１の先
端縁部を係合させ、その状態を保持しなから切欠部４６
にウェッジ５の先端部を挿入し、その後端部をハンマー
等で打つことによって取付金具４をフランジ３１部に簡
単かつ容易に係止できる。゛
しかして、防水シート１０の一端縁部をその裏面に付し
た不織布１２及び表面に当接した保護部材１３．１３と
共に、取付金具４の脚部４４に接合し、その外側をシー
ト抑え金具６を構成する一対の部材６１．６２の各湾曲
部で挟み込み９羽子板ボルト７を介在させた状態で透孔
６３，７２゜６３を共通してボルト８１とナツト８２で
締付ければ、シート抑え金具６の各湾曲部が不織布１２
゜保護部材１３．１３と共に、防水シート１０を掴持す
るため、防水シート１０に漏水が生じるような一切の孔
を設けることなく取付金具４の脚部４４に固定すること
ができる。On the other hand, in the mounting fitting 4 in the tunnel construction member of the second invention, the side plate 42 is formed higher than the wall thickness of the flange 31 of the H-shaped w43, and a notch 46 is formed in the continuous portion of the side plate 42 and the top plate 43. , the board 41 is attached to the flange 31.
The tip edge of the flange 31 is brought into contact with the bottom surface of the flange 31 and engaged with the U-shaped cross section, and while maintaining this state, the notch 46
The mounting bracket 4 can be simply and easily locked to the flange 31 by inserting the tip of the wedge 5 into the flange 5 and hitting the rear end with a hammer or the like. Thus, one end edge of the waterproof sheet 10 is joined to the legs 44 of the mounting bracket 4 together with the nonwoven fabric 12 attached to the back surface and the protective member 13. If the through holes 63, 72° 63 are jointly tightened with the bolts 81 and nuts 82 with the 9 battledore bolts 7 interposed between the curved portions of the pair of members 61 and 62 constituting the sheet retaining metal fitting 6. Each curved part of the nonwoven fabric 12
Since the waterproof sheet 10 is gripped together with the protective member 13.13, the waterproof sheet 10 can be fixed to the legs 44 of the mounting bracket 4 without providing any holes that would cause water leakage.
さらに、吊下鉄筋１４を取付金具４に取付けるための手
段として、前記シート抑え金具６の脚部にボルト８１及
びナツト８２を使用して羽子板ボルト７を締着し、この
羽子板ボルト７のねじ部７４に吊下鉄筋１４の基端部を
螺合する筒状のナツト９をねじ込み連結することによっ
て吊下鉄筋１４の固定、並びに前記吊下鉄筋１４．１４
・・・への鉄筋１５．１５・・・・の配筋を容易にかつ
能率的に実施することができ、二次覆工における吹付は
コンクリート層２２の強度を優れたものとすることがで
きる。Furthermore, as a means for attaching the hanging reinforcing bars 14 to the mounting fittings 4, the battledore bolts 7 are tightened to the leg portions of the seat restraining metal fittings 6 using bolts 81 and nuts 82, and the threaded portions of the battledore bolts 7 are tightened. By screwing and connecting the cylindrical nut 9 into which the base end of the suspension reinforcing bar 14 is screwed to 74, the suspension reinforcing bar 14 is fixed, and the suspension reinforcing bar 14.14 is fixed.
Reinforcing bars 15.15... can be easily and efficiently arranged, and spraying in the secondary lining can improve the strength of the concrete layer 22. .
なお、一次覆工のコンクリート層２１表面と防水シート
１０張設面の間には、必要に応じてグラウト材を注入す
るが、この発明の構築用部材の使用においては従前の鋲
打ち等による貫通固定方式と異なって防水シート１０と
一次覆工面に間隙があるため、防水シート１０の固定位
置に拘束されることなくグラウト材を注入することがで
きるものである。Incidentally, grouting material is injected between the surface of the concrete layer 21 of the primary lining and the surface on which the waterproof sheet 10 is applied, if necessary. Unlike the fixed method, since there is a gap between the waterproof sheet 10 and the primary lining surface, grout can be injected without being restricted to the fixed position of the waterproof sheet 10.
以下１図面を引用して第１の発明であるトンネル構築法
および第２の発明のトンネル構築用部材をより具体的に
説明する。The tunnel construction method of the first invention and the tunnel construction member of the second invention will be described in more detail below with reference to one drawing.
第１図はこの発明のトンネル構築法によるトンネルの断
面図、第２図は第１図におけるＡ−Ａ線に沿った断面図
であって、トンネルの構築に際しては地山１を掘削して
所定の大きさの空間を形成し、その内側にロックボルト
（図示せず）と吹付はコンクリートを主たる支保部材と
して初期一次覆工を実施し、トンネルの内側にコンクリ
ート層２を形成する。FIG. 1 is a sectional view of a tunnel according to the tunnel construction method of the present invention, and FIG. 2 is a sectional view taken along line A-A in FIG. A space with a size of
ついで、前記コンクリ−ｒ層２を一層補強する目的で、
コンクリート層２の表面に所定の間隔を存してアーチ型
に形成した多数のＨ型鋼３をトンネルの長さ方向に対し
てそれぞれ直角となるよう配設したのち、これらＨ型鋼
３をそれぞれコンクリート層２に適宜手段によって仮固
定し、トンネルの中心側に位置するフランジ３１の一側
縁に取付金具４をウェッジ５によって固定する。Then, for the purpose of further reinforcing the concrete r layer 2,
After placing a large number of arch-shaped H-beams 3 at predetermined intervals on the surface of the concrete layer 2 so as to be perpendicular to the length direction of the tunnel, these H-beams 3 are placed on the concrete layer. 2 by appropriate means, and the mounting bracket 4 is fixed by a wedge 5 to one side edge of the flange 31 located on the center side of the tunnel.
この取付金具４は第３図に示すように、前記フランジ３
１面と当接する基板４１の一端部を上方に直角に折曲げ
てフランジ３１の厚さよりも高い側板４２を形成すると
共に、この側板４２の先端部を基板４１と平行に折り曲
げて上面板４３とした断面コ字状部材を形成し、この断
面コ字状部材の基板４１の他端部を下方に直角に延出し
て脚部４４とし、この脚部４４の先端部に左右方向に水
平に突出する張出縁４５を設け、かつ前記側板４２と上
面板４３との連設部に切欠部４６を形成したものである
。This mounting bracket 4 is attached to the flange 3 as shown in FIG.
One end of the substrate 41 that contacts one surface is bent upward at right angles to form a side plate 42 that is thicker than the flange 31, and the tip of this side plate 42 is bent parallel to the substrate 41 to form a top plate 43. The other end of the substrate 41 of this U-shaped cross-section member extends downward at right angles to form a leg 44, and the tip of the leg 44 projects horizontally in the left-right direction. In addition, a notch 46 is formed in a continuous portion between the side plate 42 and the top plate 43.
一方、ウェッジ５は、前記切欠部４６０幅に略等しい板
状体の左右の側縁に後方に向かって次第に上方に傾斜す
る側板を一体的に設けてなるものである。On the other hand, the wedge 5 is formed by integrally providing side plates on the left and right side edges of a plate-shaped body having a width substantially equal to the width of the notch 460, which gradually slopes upward toward the rear.
したがって、°取付金具４をＨ型！［３のフランジ３１
の前方に位置させ、その基板４１の上面をフランジ３１
の下面と当接させながら取付金具４をフランジ３１と係
合させ、フランジ３１の先端縁が側板４２と当接すれば
、切欠部４６からウェッジ５の先端部を挿入し、その後
端部をハンマー等で軽く叩けば楔の原理によってフラン
ジ３１に取付金具４を固定することができるものである
。Therefore, the mounting bracket 4 should be H-shaped! [3 flange 31
the upper surface of the substrate 41 is placed in front of the flange 31.
Engage the mounting bracket 4 with the flange 31 while making contact with the lower surface of the wedge 31, and when the tip edge of the flange 31 comes into contact with the side plate 42, insert the tip of the wedge 5 through the notch 46, and insert the rear end with a hammer or the like. The mounting bracket 4 can be fixed to the flange 31 by tapping it lightly with the wedge principle.
なお、この取付金具４は一本のＨ型鋼３の一方のフラン
ジ３１に所定の間隔を存して必要な数だけ取付けられる
ものである。Note that the required number of mounting fittings 4 can be attached to one flange 31 of one H-shaped steel 3 at predetermined intervals.
ついで、Ｈ型鋼３のフランジ３１の一方の面に突出した
基板４１及び張出縁４５を有する脚部４４を例えばプチ
スチック製のカバー（図示せず）で覆ったのち、Ｈ型鋼
３の対向するフランジ３１と３２間にコンクリートを吹
付はコンクリート層２１を形成して後期一次覆工による
アーチ支保工を構築する。Next, the base plate 41 protruding from one side of the flange 31 of the H-shaped steel 3 and the leg portion 44 having the overhanging edge 45 are covered with a plastic cover (not shown), for example, and then the opposing flange of the H-shaped steel 3 is covered. Concrete is sprayed between 31 and 32 to form a concrete layer 21, and an arch support is constructed using the primary lining in the latter stage.
この時、Ｈ型ｗ４３のフランジ３１の表面は、前記コン
クリート１２１の表層から顕出した状態にあるので、コ
ンクリートＩＪ２１の形成後は前記カバーは当然取り除
くものである。At this time, the surface of the flange 31 of the H-shaped w43 is exposed from the surface layer of the concrete 121, so the cover is naturally removed after the concrete IJ21 is formed.
Ｈ型鋼３の使用によるアーチ支保工が完成すると、コン
クリートＮ２１の表面に防水シート１０を張設する。When the arch support using the H-shaped steel 3 is completed, a waterproof sheet 10 is stretched over the surface of the concrete N21.
この防水シート１０は、塩化ビニル樹脂製のシート部材
１１の裏面に合成樹脂繊維によって形成した不織布１２
を重ね合わせて構成したもので。This waterproof sheet 10 includes a nonwoven fabric 12 formed of synthetic resin fibers on the back side of a sheet member 11 made of vinyl chloride resin.
It is constructed by overlapping the .
コンクリート層２１表面への張設は、第４図に示すよう
に前記フランジ３１上に突出している取付金具４の脚部
４４に張り出した張出縁４５に沿って防水シート１０を
巻き付けるようにして当接する。The waterproof sheet 10 is laid on the surface of the concrete layer 21 by wrapping the waterproof sheet 10 along the overhanging edge 45 that overhangs the legs 44 of the mounting bracket 4 that protrudes above the flange 31, as shown in FIG. come into contact with
つぎに、防水シート１０の外側にはシート部材１１が損
傷しないよう軟質ゴムからなる保護部材１３．１３を当
接し、全体をシート抑え金具６によって取付金具５の脚
部４４に係合保持する。Next, a protective member 13.13 made of soft rubber is brought into contact with the outside of the waterproof sheet 10 so as not to damage the sheet member 11, and the entire sheet is held in engagement with the legs 44 of the mounting fitting 5 by the sheet holding fitting 6.
このシート抑え金具６は９脚部４４の張出縁４５と係合
する湾曲部を有する左右一対の部材６１と６２から構成
されるもので、各部材６１．６２はそれぞれ下縁部に連
設される各脚部にボルト挿通用の透孔６３，６３を有し
、これら各部材６１と６２の脚部間に後述の羽子板ボル
ト７の頭部７１を介在せしめ、この頭部に設けた透孔７
２と前記各部材６１．６２に設けた透孔６３．６３とを
一致させたのち、これら透孔にボルト８１を挿通させて
ナフト８２で締め付けることによって、取付金具４の脚
部４４に防水シート１０を確実に保持することができる
。This sheet restraint fitting 6 is composed of a pair of left and right members 61 and 62 each having a curved portion that engages with the overhanging edge 45 of the nine leg portions 44, and each member 61 and 62 is connected to the lower edge. A head 71 of a battledore bolt 7, which will be described later, is interposed between the legs of each member 61 and 62, and a transparent hole provided in the head is inserted between the legs of each member 61 and 62. Hole 7
2 and the through-holes 63.63 provided in each of the members 61.62, and then insert the bolts 81 into these through-holes and tighten them with the naphuts 82, thereby attaching the waterproof sheet to the legs 44 of the mounting bracket 4. 10 can be held securely.
したがって、トンネルの前後方向に配設されたアーチ型
支保工を構成する多数のＨ型鋼３，３・・・・に設けた
取付金具４．４・・・に順次防水シート１０の一部を前
記手段に取付けることによってコンクリート層２１の表
面を覆って防水シート１０を張設することができる。Therefore, a portion of the waterproof sheet 10 is sequentially attached to the mounting brackets 4, 4, etc. provided on a large number of H-beams 3, 3, etc., which constitute the arch-shaped support provided in the longitudinal direction of the tunnel. By attaching it to a means, the waterproof sheet 10 can be stretched over the surface of the concrete layer 21.
コンクリート層２１の表面への防水シート１０の張設が
完了すれば、つぎに羽子板ボルト７のねじ部７４に筒状
のナフト９の一端部を螺合し、しかるのちナツト９の他
端部に配筋用の吊下鉄筋１４の一端部を螺合する。Once the waterproof sheet 10 has been stretched onto the surface of the concrete layer 21, one end of the cylindrical napht 9 is screwed onto the threaded portion 74 of the battledore bolt 7, and then the other end of the nut 9 is screwed onto the threaded portion 74 of the battledore bolt 7. One end of the suspension reinforcing bar 14 for reinforcement is screwed together.
ついで、各吊下鉄筋１４に鉄筋１５．１５・・・を適宜
手段によって結束して二次覆工のための配筋を行い、こ
の配筋された部分を包含して吹付はコンクリートによる
所定の厚みの二次覆工のコンクリ−）Ｊｉｉ２２を形成
すれば、最終的に優れた強度のトンネルとなすことがで
きる。Next, reinforcing bars 15, 15, etc. are tied to each hanging reinforcing bar 14 by appropriate means to arrange reinforcement for the secondary lining, and spraying is performed using concrete to cover the reinforced part. By forming a secondary lining concrete (concrete) with a thickness of Jii22, a tunnel with excellent strength can be obtained in the end.
この発明にける第１の発明は、公知のＮＡＴＭ工法によ
るトンネル構築を基本とし、これにアーチ支保工および
防水シートによる工法をコンバインさせて、トンネルの
構築強度を大幅に向上せしめると共に、トンネル壁面よ
りの漏水をはり完全に防止することができるものである
。The first aspect of this invention is based on tunnel construction using the well-known NATM construction method, and by combining this with arch shoring and waterproof sheet construction methods, the construction strength of the tunnel is greatly improved, and the tunnel wall surface is Water leakage can be completely prevented.
特にこの発明方法によれば、防水シートの張設に際して
防水シートに固定のための穴明は加工をすることなく、
簡単に防水シートを張設することができ、また防水シー
トが持つ本来の伸びを利用して当該防水シートを掴持す
るものであるため。In particular, according to the method of this invention, holes for fixing to the tarpaulin sheet do not need to be processed when the tarpaulin sheet is stretched.
This is because the tarpaulin sheet can be easily stretched, and the tarpaulin sheet can be gripped and held using the natural stretch of the tarpaulin sheet.
地山の湧水によるトンネル内への漏水を殆ど完全に阻止
することができる。It is possible to almost completely prevent water leakage into the tunnel due to spring water from the ground.
一方第２の発明は、取付金具をウェッジによってアーチ
型支保工を構成するＨ型鋼の一方のフランジ部に固定し
、固定された取付金具の脚部に防水シートの所要部位を
当接し、その外側をシート抑え金具で挟持することによ
って防水シートを一次覆工によって形成したコンクリー
ト層の表面に簡単かつ容易に、しかも防水シートに水漏
れ等の原因となる取付孔など一切の加工を施すことなく
張設することができるものである。On the other hand, in the second invention, the mounting bracket is fixed to one flange part of the H-shaped steel constituting the arch-shaped shoring using a wedge, and the required part of the waterproof sheet is brought into contact with the leg of the fixed mounting bracket, and the outside By holding the waterproof sheet between the sheet retaining metal fittings, the waterproof sheet can be easily and easily applied to the surface of the concrete layer formed by the primary lining, and without making any modifications to the waterproof sheet such as installation holes that may cause water leakage. It is possible to set up
また、シート抑え金具の脚部間に羽子板ボルトを取付け
、この羽子板ボルトの一端に吊下鉄筋を取付けのための
ナツトを着脱自在に設けているので、配筋を行うための
吊下鉄筋の取付は作業が非常に簡単かつ容易に行うこと
ができ２作業能率を大幅に向上させることができる。In addition, a battledore bolt is installed between the legs of the seat restraint fitting, and a nut for attaching the hanging reinforcing bars is detachably provided at one end of the battledore bolt, so it is easy to attach the hanging reinforcing bars for reinforcing. The work can be done very simply and easily, and the work efficiency can be greatly improved.
さらに、この発明のトンネル構築部材を構成する各部材
は構造がきわめて簡単であるので１部品の製造コストが
安価となるため、前記したトンネル構築作業の容易性と
相俟って、従来のトンネル構築に対して作業性２強度、
コトス等の面において温かに大きな優位性を有するもの
である。Furthermore, since each member constituting the tunnel construction member of the present invention has an extremely simple structure, the manufacturing cost of each part is low. For workability 2 strength,
It has a great advantage over warmth in terms of cotos, etc.
第１図はこの発明のトンネル構築法によるトンネルの断
面図、第２図は第１図におけるＡ−Ａ線に沿った断面図
、第３図はこの発明に使用するトンネル構築用部材の分
解斜視図、第４図は第３図のトンネル構築用部材の使用
状態を示す部分縦断面図である。
１・・・地山
２．２１．２２・・・コンクリート層
３・・・Ｈ型鋼
３１．３２・・・Ｈ型鋼のフランジ
４・・・取付金具、 ４４・・・ｍ部４５・・・張出
縁、 ４６・・・切欠部５・・・ウェッジ、 ６・
・・シート抑え金具７・・・羽子板ボルト、８１・・・
ボルト８２・・・ナツト、 ９・・・ナツト１０・
・・防水シート、１１・・・シート部材１２・・・不織
布、 １３・・・保護部材１４・・・吊下鉄筋、
１５・・・鉄筋特許出願人 ブリヂストン工業用
品
東京販売株式会社Fig. 1 is a sectional view of a tunnel according to the tunnel construction method of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is an exploded perspective view of the tunnel construction member used in the invention. 4 are partial vertical cross-sectional views showing how the tunnel construction member of FIG. 3 is used. 1...Mound 2.21.22...Concrete layer 3...H-shaped steel 31.32...H-shaped steel flange 4...Mounting bracket, 44...m section 45...Tension Edge, 46... Notch 5... Wedge, 6.
... Seat holding fitting 7 ... Hagoita bolt, 81 ...
Bolt 82...Nut, 9...Nut 10.
... Waterproof sheet, 11 ... Sheet member 12 ... Nonwoven fabric, 13 ... Protective member 14 ... Hanging reinforcing bar,
15...Reinforcing bar patent applicant Bridgestone Industrial Products Tokyo Sales Co., Ltd.
Claims (2)
主たる支保部材として初期一次覆工を行なうと共に、そ
の内側に所定の間隔をおいてＨ型鋼によるアーチ支保工
を形成し、このアーチ支保工におけるＨ型鋼の一方のフ
ランジ部に取付金具をウェッジで固定したのち、前記Ｈ
型鋼の一方のフランジ面までコンクリートを吹付けて後
期一次覆工によるコンクリート層を形成し、ついで前記
取付金具の張出縁を有する脚部に前記コンクリート層の
表面を覆う防水シートの一部を当接し、しかるのちその
外側を左右一対の抑え部材からなるシート抑え金具で掴
持し、防水シートを取付金具の脚部に固定し、前記コン
クリート層の表面に防水シートを張設し、その後前記シ
ート抑え金具に着脱自在に取付けた羽子板ボルトの一端
に吊下鉄筋を取付け、この吊下鉄筋を利用して前記防水
シートの表面に配筋し、以後この配筋部に吹付けコンク
リートによる二次覆工を施工することを特徴とするトン
ネル構築法。(1) Initial primary lining is performed on the inner surface of the excavated tunnel using shotcrete as the main supporting member, and arch supports made of H-beam steel are formed at predetermined intervals on the inside of the lining. After fixing the mounting bracket to one flange of the shaped steel with a wedge,
Spray concrete up to one flange surface of the shaped steel to form a concrete layer as a late primary lining, and then apply a part of the waterproof sheet covering the surface of the concrete layer to the legs with the overhanging edges of the mounting bracket. Then, the outer side of the sheet is held by a sheet holding fitting consisting of a pair of left and right holding members, the waterproof sheet is fixed to the legs of the mounting fitting, the waterproof sheet is stretched over the surface of the concrete layer, and then the sheet is A hanging reinforcing bar is attached to one end of the battledore bolt that is removably attached to the holding bracket, and this hanging reinforcing bar is used to arrange reinforcement on the surface of the waterproof sheet, and from then on, this reinforcing part is covered with a secondary covering with shotcrete. A tunnel construction method characterized by the construction of tunnels.
ランジ面と当接する基板の一端部を上方に折曲げて前記
フランジの厚さよりも高い側板を形成すると共に、側板
の先端部を基板と平行に折曲して上面板とした断面コ字
状部材を形成し、この断面コ字状部材の他端部を下方に
折曲げて脚部とすると共に、この脚部の先端部に左右方
向に突出する張出縁を設け、かつ前記側板と上面板との
連設部に切欠部を設けた取付金具と、前記取付金具の切
欠部に挿入し、取付金具をＨ型鋼のフランジ面に固定す
るためのウェッジと、前記取付金具の各張出縁と係合す
る湾曲部を有する左右一対のシート抑え金具と、前記シ
ート抑え金具の脚部に取付けられる羽子板ボルトと、一
端部に前記羽子板ボルトを、他端に吊下鉄筋をそれぞれ
螺着するナットとから構成されることを特徴とするトン
ネル構築用部材。(2) One end of the substrate that contacts the flange surface of the H-shaped steel for forming the arch support is bent upward to form a side plate that is higher than the thickness of the flange, and the tip of the side plate is parallel to the substrate. The other end of this U-shaped cross-section member is bent downward to form a leg, and the tip of the leg is provided with a cross-sectional U-shaped member that serves as an upper plate. A mounting bracket is provided with a protruding edge and a cutout is provided in the connecting portion between the side plate and the top plate, and the mounting bracket is inserted into the notch of the mounting bracket and fixed to the flange surface of the H-beam steel. a pair of left and right sheet holding fittings each having a curved portion that engages with each overhanging edge of the mounting fittings, a battledore bolt attached to a leg of the sheet holding fitting, and a battledore bolt attached to one end of the seat holding fitting. , and a nut on which a hanging reinforcing bar is screwed onto the other end, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62094159A JPS63261099A (en) | 1987-04-16 | 1987-04-16 | Method of constructing tunnel and member for constructing tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62094159A JPS63261099A (en) | 1987-04-16 | 1987-04-16 | Method of constructing tunnel and member for constructing tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63261099A true JPS63261099A (en) | 1988-10-27 |
| JPH0583720B2 JPH0583720B2 (en) | 1993-11-29 |
Family
ID=14102593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62094159A Granted JPS63261099A (en) | 1987-04-16 | 1987-04-16 | Method of constructing tunnel and member for constructing tunnel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63261099A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019218724A (en) * | 2018-06-18 | 2019-12-26 | 株式会社トーキンオール | Reinforcement support fittings |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3004965U (en) * | 1994-01-31 | 1994-12-06 | 福井めがね工業株式会社 | Eye mirror |
-
1987
- 1987-04-16 JP JP62094159A patent/JPS63261099A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019218724A (en) * | 2018-06-18 | 2019-12-26 | 株式会社トーキンオール | Reinforcement support fittings |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0583720B2 (en) | 1993-11-29 |
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