JP2020111874A - Temporary scaffolding in tunnel - Google Patents

Temporary scaffolding in tunnel Download PDF

Info

Publication number
JP2020111874A
JP2020111874A JP2019000913A JP2019000913A JP2020111874A JP 2020111874 A JP2020111874 A JP 2020111874A JP 2019000913 A JP2019000913 A JP 2019000913A JP 2019000913 A JP2019000913 A JP 2019000913A JP 2020111874 A JP2020111874 A JP 2020111874A
Authority
JP
Japan
Prior art keywords
tunnel
scaffolding
temporary
present
construction
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
Application number
JP2019000913A
Other languages
Japanese (ja)
Other versions
JP7178908B2 (en
Inventor
豊 奥田
Yutaka Okuda
豊 奥田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Corp
Original Assignee
Taisei Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taisei Corp filed Critical Taisei Corp
Priority to JP2019000913A priority Critical patent/JP7178908B2/en
Publication of JP2020111874A publication Critical patent/JP2020111874A/en
Application granted granted Critical
Publication of JP7178908B2 publication Critical patent/JP7178908B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Lining And Supports For Tunnels (AREA)

Abstract

To provide a temporary scaffolding in a tunnel, which has a simple structure and which makes it possible to ensure construction work of an auxiliary construction method at a relatively low cost.SOLUTION: A temporary scaffolding in a tunnel according to the present invention includes brackets 31, 31 that are temporarily installed at an intermediate height of an inner surface of a tunnel T, a beam 33 that is installed between the brackets 31 and 31, a suspending member 34 that supports an intermediate portion of the beam 33 attached to an upper part of the tunnel T, and a scaffolding member 35 laid on the beam 33.SELECTED DRAWING: Figure 1

Description

本発明は、建設工事に用いられるトンネル内の仮設作業足場に関する。 The present invention relates to a temporary work scaffold in a tunnel used for construction work.

シールド工法におけるトンネル工事のうち、特に道路トンネルでは、緊急時の避難や点検を目的として、併設する上下線トンネルの一部を切開き、互いを横坑で接続するＵターン路や連絡道等が施工される。これらは一般に、地中内を非開削で行われるため、薬液注入工法やパイプルーフ等の補助工法を併用して、トンネル間の止水及び支保を確保する。この場合、補助工法の施工に必要な推進装置や薬液注入装置といった設備類を仮置きする足場が必要になるが、こうした横坑は、トンネル工事区間内に所定の間隔で複数設けられるため、横坑工事に補助工法施工のための諸設備を仮置きするための仮設足場を先行して架設すると、トンネル内を走行可能な大型の仮設台車（例えば、鉄筋台車、型枠台車、床版設置台車等）を必要とする側壁や床版の設置工事の障害になり得る。
そこで従来は、このような台車が全て通過した後に、仮設足場を設置して施工を行ってきた。
特許文献１，２には、トンネル工事における移動足場が開示されているが、これらはいずれもトンネル下部に施工されたインバートもしくは枕木に設置されたレール上を走行する形態であり、前記の仮設台車との干渉は免れない。 Among the tunnel constructions in the shield construction method, especially in road tunnels, for the purpose of evacuation and inspection in an emergency, a part of the up-and-down tunnel to be installed is cut open, and there are U-turn roads and connecting roads that connect each other with sideways. It will be constructed. Since these are generally performed without excavation in the ground, a chemical injection method and an auxiliary method such as a pipe roof are used together to secure water stop and support between tunnels. In this case, a scaffold for temporarily placing equipment such as propulsion equipment and chemical injection equipment necessary for construction of the auxiliary construction method is required.However, since a plurality of such shafts are provided in the tunnel construction section at predetermined intervals, When a temporary scaffold for temporarily placing various equipment for auxiliary construction is temporarily installed in the mine construction, a large temporary trolley that can run in the tunnel (for example, a rebar trolley, formwork trolley, floor slab) Etc.) may be an obstacle to the installation work of side walls and floor slabs that require such.
Therefore, conventionally, construction has been performed by installing a temporary scaffold after all such trucks have passed.
Patent Documents 1 and 2 disclose moving scaffolds for tunnel construction, but these are all in the form of traveling on an invert constructed on the lower part of the tunnel or on rails installed on sleepers, and the temporary trolley described above. Interference with is inevitable.

特開２００１−４８０１２号公報JP, 2001-48012, A 特開２００８−３８３６４号公報JP, 2008-38364, A

本発明は、補助工法の施工を確保することを可能としたトンネル内仮設足場を提供することを課題とする。 An object of the present invention is to provide a temporary scaffolding in a tunnel that can ensure the construction of an auxiliary construction method.

前記課題を解決するための本発明のトンネル内仮設足場は、トンネル内面の中間高さに仮設されたブラケットと、前記ブラケット間に架設された梁と、トンネル上部に取り付けられた前記梁の中間部を支持する吊材と、前記梁の上に敷設された足場材と、を備えたことを特徴とする。 The temporary scaffolding in a tunnel of the present invention for solving the above-mentioned problems includes a bracket temporarily installed at an intermediate height of the inner surface of the tunnel, a beam bridged between the brackets, and an intermediate part of the beam attached to the upper part of the tunnel. And a scaffolding material laid on the beam.

本発明のトンネル内仮設足場をトンネルの上部に設けたことにより、簡易な構成で、かつ比較的安価に、補助工法の施工を確保することを可能にする。 By providing the temporary scaffold in the tunnel of the present invention on the upper part of the tunnel, it is possible to secure the construction of the auxiliary construction method with a simple structure and at a relatively low cost.

薬液注入機材を載置した本発明のトンネル内仮設足場を示すトンネル断面図である。It is a tunnel sectional view showing a temporary scaffolding in a tunnel of the present invention on which a chemical liquid injection device is placed. パイプルーフ設置機材を載置した本発明のトンネル内仮設足場を示すトンネル断面図である。It is a tunnel sectional view showing a temporary scaffolding in a tunnel of the present invention on which a pipe roof installation device is mounted.

以下に、本発明の実施形態について、図面を参照しながら説明する。
図１に薬液注入機材を載置した本発明のトンネル内仮設足場を示す。
本実施形態におけるトンネル内仮設足場３は、地盤Ｇ内に構築された円形トンネルＴの外殻を形成する複数のセグメントピースからなる覆工１内面の幅方向に横架するように架渡された梁材３３と、梁材３３の上面に敷き詰められた足場材３５とによって構成され、梁材３３の両端は覆工１の内面に固定されたブラケット３１，３１から支持され、梁材３３の略中央部を覆工１の内面から吊り下ろされた吊材３４に固定されている。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a temporary scaffold in a tunnel of the present invention on which a chemical liquid injection device is mounted.
The temporary scaffold 3 in the tunnel in the present embodiment is laid so as to cross the width direction of the inner surface of the lining 1 composed of a plurality of segment pieces forming the outer shell of the circular tunnel T constructed in the ground G. The beam member 33 and the scaffolding member 35 spread on the upper surface of the beam member 33 are provided. Both ends of the beam member 33 are supported by the brackets 31 and 31 fixed to the inner surface of the lining 1, The central portion is fixed to a suspending member 34 suspended from the inner surface of the lining 1.

ブラケット３１は、複数のＬ形鋼材（アングル材）を組み合わせ、溶接により一体に加工されており、覆工１の内面の曲率に沿って密着する支持材と、該支持材の頂部に水平に覆工１の内面側に張出すようにその一端を固定された水平材と、該水平材の他端と該支持材の下方に固定された杖材とによってトラス形状に形成されており、山留支保工の腹起しを載置する際に用いるブラケットと同様の形態である。ブラケット３１は、覆工１を形成するセグメントピース内に埋設されたインサートにボルトを介して覆工１に螺着、固定されている。
ブラケット３１，３１・・・は、トンネルＴの軸方向に対しても、間隔を開けて配置され、ブラケット３１，３１・・・の上面を架渡すようにＨ形鋼材である側部根太材３２がトンネル軸方向に載置され、固定されている。 The bracket 31 is made by combining a plurality of L-shaped steel materials (angle materials) and is integrally processed by welding. The bracket 31 covers the support material closely adhered along the curvature of the inner surface of the lining 1 and the top of the support material horizontally. It is formed in a truss shape by a horizontal member having its one end fixed so as to project to the inner surface side of the work 1, and a cane member fixed to the other end of the horizontal member and below the supporting member. It is the same form as the bracket used when placing the uprising of the support work. The bracket 31 is screwed and fixed to the lining 1 via bolts in an insert embedded in the segment piece forming the lining 1.
The brackets 31, 31,... Are also arranged at intervals in the axial direction of the tunnel T, and the side joist material 32 which is an H-shaped steel material is provided so as to bridge the upper surfaces of the brackets 31, 31,. Is mounted and fixed in the axial direction of the tunnel.

次に、Ｈ形鋼材からなる梁材３３は、左右の側部根太材３２，３２上面に架渡されるように、直交方向（トンネルＴの断面方向）に配置され、側部根太材３２，３２間に固定されている。本実施形態における梁材３３は、トンネルＴの略中央で、２本の梁上段材３３１、梁下段材３３２が上下方向に重なるように配置されている。梁上段材３３１と梁下段材３３２は、Ｈ形鋼材からなる高さ調整材３３３を介して一体に固定されている。 Next, the beam member 33 made of an H-shaped steel material is arranged in the orthogonal direction (cross-sectional direction of the tunnel T) so as to be bridged on the upper surfaces of the left and right side joist members 32, 32, and the side joist members 32, 32 are arranged. It is fixed in between. The beam member 33 in the present embodiment is arranged so that two upper beam members 331 and two lower beam members 332 are vertically overlapped with each other at substantially the center of the tunnel T. The upper beam member 331 and the lower beam member 332 are integrally fixed via a height adjusting member 333 made of an H-shaped steel material.

次に、Ｈ形鋼材から構成される吊材３４は、孤材３４１と上部根太材３４２と柱材３４４及び下部根太材３４３を具備する。孤材３４１は、覆工１の上部略中央にトンネルＴの断面方向に覆工１の内面に沿って密着するように、不図示のセグメントに埋設されたインサートにボルトで固定されている。孤材３４１，３４１・・・は、トンネルＴの軸方向に所定の間隔を開けて複数設置されており、上部根太材３４２がトンネルＴの軸方向に、孤材３４１，３４１・・・の下面に密着するように固定されている。トンネルＴの平面視で上部根太材３４２に重なるように、下部根太材３４３が梁上段材３３１の上面に固定されている。また、鉛直に配置された柱材３４４は、上部根太材３４２の下面及び下部根太材３４３の上面に固定されている。 Next, the suspension member 34 composed of an H-shaped steel material includes an arc member 341, an upper joist member 342, a pillar member 344, and a lower joist member 343. The isolated member 341 is bolted to an insert embedded in a segment (not shown) so as to be in close contact with the upper portion of the lining 1 along the inner surface of the lining 1 in the cross-sectional direction of the tunnel T. A plurality of the isolated members 341, 341... Are installed at a predetermined interval in the axial direction of the tunnel T, and the upper joist member 342 is arranged in the axial direction of the tunnel T and the lower surface of the isolated members 341, 341. It is fixed so as to be in close contact with. The lower joist member 343 is fixed to the upper surface of the upper beam member 331 so as to overlap the upper joist member 342 in a plan view of the tunnel T. The vertically arranged pillar members 344 are fixed to the lower surface of the upper joist member 342 and the upper surface of the lower joist member 343.

さらに、足場板３５は、梁材３３の上面に敷き詰められ足場が形成される。
足場板３５は、既成品として一般に流通している鋼製の足場板を主として用いるが、端部等に生じる隙間については、必要に応じて鋼板等を加工して養生する。 Further, the scaffold plate 35 is spread over the upper surface of the beam member 33 to form a scaffold.
As the scaffolding plate 35, a steel-made scaffolding plate that is generally commercially available as an off-the-shelf product is mainly used, but a gap formed at an end or the like is cured by processing a steel plate or the like as necessary.

このトンネル内仮設足場構造３は、例えば、図示されるように覆工１のインバート部に形成された軌条設備２上をトンネルＴの軸方向に走行する側壁型枠台車Ｆ等の大型台車の往来に干渉しないように、側壁型枠台車Ｆよりも高い位置に配置することで、トンネル内仮設足場３上で行われる作業と、トンネル足場構造３の下方で行われる作業を安全かつ確実に分離することが可能になる。これにより、トンネルＴ内で複数の作業を並行して行うことが可能になり、工事全体の工程短縮を図れる。
同図のトンネル内仮設足場３上では、間隔を開けて併設された別なトンネルとの接続工事のための止水用の薬液注入に必要な施工設備等Ｍを配置しながら、覆工１の内部から外部に向かって複数の薬液注入管Ｒ，Ｒ・・・を打設、注入作業をすることができる。 The temporary scaffolding structure 3 in the tunnel is used, for example, to move a large truck such as a side wall frame truck F traveling in the axial direction of the tunnel T on a rail facility 2 formed in an invert portion of the lining 1 as illustrated. The work performed on the temporary scaffold 3 in the tunnel and the work performed below the tunnel scaffold structure 3 are safely and reliably separated by arranging the work at a position higher than the side wall form carriage F so as not to interfere with the It will be possible. As a result, it becomes possible to perform a plurality of works in parallel in the tunnel T, and it is possible to shorten the entire construction process.
On the temporary scaffolding 3 in the tunnel shown in the figure, while arranging construction equipment M necessary for injecting a chemical liquid for water stoppage for connection work with another tunnel provided with an interval, A plurality of chemical solution injection pipes R, R... Can be placed and injected from the inside to the outside.

図２にパイプルーフ設置機材を載置した本発明のトンネル内仮設足場を示す。図１の薬液注入と同様に、トンネル内仮設足場３上に設置したパイプルーフを設置するための推進装置等の施工設備等Ｍを用いて、覆工１の内部から併設された別なトンネルに向かって複数のパイプルーフＰ，Ｐ・・・が打設することができる。
トンネル内仮設足場３の形態は、その下方を通過する側壁型枠台車Ｆ等の大型台車の障害にならない範囲で、高さ等を変更することで、トンネル内仮設足場３上で行われる各種作業に必要な内空を確保することが可能になる。 FIG. 2 shows the temporary scaffolding in the tunnel of the present invention on which the equipment for installing the pipe roof is placed. As in the case of chemical injection in FIG. 1, using construction equipment M such as a propulsion device for installing the pipe roof installed on the temporary scaffold 3 in the tunnel, another tunnel is installed inside the lining 1 from the inside. A plurality of pipe roofs P, P...
The form of the temporary scaffolding 3 in the tunnel is various work performed on the temporary scaffolding 3 in the tunnel by changing the height and the like within a range that does not hinder a large dolly such as a side wall form dolly F passing below. It becomes possible to secure the necessary inner space.

以上より、本実施形態に係るトンネル内仮設足場は構成が簡易であるので安価であり、係る足場の下方で行われる施工を止めることなく足場上部の補助工法の施工を可能にする。 As described above, the temporary scaffolding in the tunnel according to the present embodiment has a simple structure and thus is inexpensive, and enables construction of an auxiliary construction method on the upper part of the scaffold without stopping construction performed under the scaffolding.

以上、本発明の実施形態について説明したが、本発明は前記の実施形態に限られず、本発明の趣旨を逸脱しない範囲で適宜変更が可能である。
例えば、セグメントはコンクリート系ではなく鋼製セグメントでも良い。この場合、縦リブ等の仮設部材への溶接やボルト固定がインサートに代替される。また、上下段に分割された梁材を適用したが、１本ものでも良い。さらにトンネル形状は円形に係わらず、矩形や馬蹄形でも良い。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit of the present invention.
For example, the segment may be a steel segment rather than a concrete system. In this case, welding or bolt fixing to a temporary member such as a vertical rib is replaced with the insert. Moreover, although the beam material divided into the upper and lower stages is applied, one beam may be used. Further, the tunnel shape is not limited to a circular shape, but may be a rectangular shape or a horseshoe shape.

以上、本発明の実施形態について説明したが、本発明は前記の実施形態に限られず、本発明の趣旨を逸脱しない範囲で適宜変更が可能である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and can be appropriately modified without departing from the spirit of the present invention.

Ｇ 地盤
Ｔ トンネル
Ｆ 側壁型枠台車
Ｒ 薬液注入管
Ｐ パイプルーフ
Ｍ 施工設備等
１ 覆工
２ 軌条設備
３ トンネル内仮設足場
３１ ブラケット
３２ 側部根太材
３３ 梁材
３３１ 梁上段材
３３２ 梁下段材
３３３ 高さ調整材
３４ 吊材
３４１ 孤材
３４２ 上部根太材
３４３ 下部根太材
３４４ 柱材
３５ 足場板 G Ground T Tunnel F Sidewall form trolley R Chemical injection pipe P Pipe roof M Construction equipment 1 Lining 2 Railroad equipment 3 Temporary scaffolding 31 Tunnel 32 Bracket 33 Side joist 33 Beam 331 Beam upper step 332 Beam lower step 333 Height adjusting material 34 Hanging material 341 Isolated material 342 Upper joist material 343 Lower joist material 344 Column material 35 Scaffolding board

Claims (1)

トンネル内面の中間高さに仮設されたブラケットと、
前記ブラケット間に架設された梁と、
トンネル上部に取り付けられた前記梁の中間部を支持する吊材と、
前記梁の上に敷設された足場材と、を備えたトンネル内足場。 With a bracket temporarily installed at the intermediate height of the inner surface of the tunnel,
A beam erected between the brackets,
A suspending material that supports the middle part of the beam attached to the upper part of the tunnel,
A scaffold in a tunnel, comprising scaffolding material laid on the beam.
JP2019000913A 2019-01-08 2019-01-08 Temporary scaffolding in a tunnel Active JP7178908B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019000913A JP7178908B2 (en) 2019-01-08 2019-01-08 Temporary scaffolding in a tunnel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019000913A JP7178908B2 (en) 2019-01-08 2019-01-08 Temporary scaffolding in a tunnel

Publications (2)

Publication Number Publication Date
JP2020111874A true JP2020111874A (en) 2020-07-27
JP7178908B2 JP7178908B2 (en) 2022-11-28

Family

ID=71665859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2019000913A Active JP7178908B2 (en) 2019-01-08 2019-01-08 Temporary scaffolding in a tunnel

Country Status (1)

Country Link
JP (1) JP7178908B2 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50623B1 (en) * 1969-04-26 1975-01-10
US3970200A (en) * 1975-01-16 1976-07-20 George Hyman Construction Co. Gantry
JPS5196141A (en) * 1975-02-03 1976-08-23
US4051682A (en) * 1976-07-15 1977-10-04 Lockwood Jr James L Method for installing ceiling panels in a tunnel
JP2014077283A (en) * 2012-10-10 2014-05-01 Nippon Civic Engineering Consultant Co Ltd Widened part construction method of tunnel and structure of tunnel widened part
JP2016142098A (en) * 2015-02-04 2016-08-08 株式会社大林組 Removal method for ceiling board
JP2018044392A (en) * 2016-09-15 2018-03-22 サンオー産業株式会社 Length adjustment tool

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50623B1 (en) * 1969-04-26 1975-01-10
US3970200A (en) * 1975-01-16 1976-07-20 George Hyman Construction Co. Gantry
JPS5196141A (en) * 1975-02-03 1976-08-23
US4051682A (en) * 1976-07-15 1977-10-04 Lockwood Jr James L Method for installing ceiling panels in a tunnel
JP2014077283A (en) * 2012-10-10 2014-05-01 Nippon Civic Engineering Consultant Co Ltd Widened part construction method of tunnel and structure of tunnel widened part
JP2016142098A (en) * 2015-02-04 2016-08-08 株式会社大林組 Removal method for ceiling board
JP2018044392A (en) * 2016-09-15 2018-03-22 サンオー産業株式会社 Length adjustment tool

Also Published As

Publication number Publication date
JP7178908B2 (en) 2022-11-28

Similar Documents

Publication Publication Date Title
CN108729354B (en) Downstream bridge movable formwork and construction method thereof
JP2014066007A (en) Removal method of existent bridge and renewal method of existent bridge
JP2006214209A (en) Method of erecting and removing bridge girder, and bridge girder construction apparatus
JP2006265884A (en) Method of removing existing pier of viaduct
JP4405958B2 (en) Bridge girder construction and removal method and bridge girder construction equipment
JP2018104972A (en) Floor slab erection method and floor slab erection device
JP6715000B2 (en) Temporary scaffolding for transportation facilities
JP2018059311A (en) Floor slab replacement method
JP2019031876A (en) Suspended scaffold device
JP6374353B2 (en) How to build a bridge
JP2006028881A (en) Self-propelled pc floor slab erecting machine and pc floor slab erecting method
JP6644657B2 (en) Temporary sleepers for shield tunnel construction
JP7185567B2 (en) Bridge pier repair method
JP2020111874A (en) Temporary scaffolding in tunnel
JP2008214930A (en) Temporary bridge between railroad platforms
JP2010047901A (en) Suspension device-integrated suspended scaffold
JP6360769B2 (en) Widening method of existing road bridge
JP3349463B2 (en) How to install additional girder
JP6974233B2 (en) Floor slab replacement method and floor slab replacement device
CN102454298B (en) Large-sized reinforced concrete construction of frame beam method
JP2008303537A (en) Transportation method for precast floor slab
JP2018204303A (en) Reinforced cage positioning system
JP6944900B2 (en) Construction method of linear structure
JP6740846B2 (en) Floor slab replacement structure and floor slab replacement construction method
KR200432268Y1 (en) Cover Plate integrated with the Frame

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210803

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20220525

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220531

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220726

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20221108

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20221115

R150 Certificate of patent or registration of utility model

Ref document number: 7178908

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150