JP2008248611A - Support fixing structure of shield tunnel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To fix a support by the use of a joint board of a segment only by using one special-purpose tool in the repair lining work of a shield tunnel. <P>SOLUTION: A bolt member 2 which is projected to the inside of segment rings is fixed to the joint board 31 connecting the segment rings to each other, and the support 1 is fixed to the bolt member 2. To be more specific, the bolt member 2 is integrally provided with a fastener clip 22 which is welded on the connection end surface of the joint board 31. Then the support 1 which is H-shaped steel is fixed by fastening a nut 24 to the bolt member 2 which is inserted through a fixation hole 11 formed in its flange. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a support structure for supporting a shield tunnel.

  As a segment lining of a shield tunnel, there is a partial segment lining method disclosed in Patent Document 1, for example. In the partial segment lining method of Patent Document 1, a steel segment inner form 11 is framed using a bent H steel support member 10 which is previously attached to the inside of the concrete segment 2 with a fastening bolt and nut 30 as a guide. A lining material injection space 16 is formed between the circumferential direction of the segment 2 by the steel inner mold 11 and the like, and the lining material is injected to perform the lining.

  Further, as a shield tunnel repair lining, there is a method of using a dedicated fixture disclosed in Patent Document 2, for example. The fixture of the repair board of patent document 2 is attached to the bolt head C and the nut D of the connecting bolt B between the segments A, and is composed of a square hole cylinder 11 and an outer cylinder 13, and the square hole cylinder 11 is a disk. Is a disk having a square hole 12 opened therein, and this square hole 12 is constituted by a polygonal hole having an outer shape equal to the outer shape of the head C of the connecting bolt B of the segment A or the nut D. is there. The outer cylinder 13 fitted to the outer periphery of the square-hole cylinder 11 is a cylindrical body having a through-hole that is equal to the outer shape of the square-hole cylinder 11 inside, and the outer cylinder 13 is anchored in a direction radiating from the center of the cylinder. The bolt 14 is configured to be attached with screws.

  And the repair method using the fixture of patent document 2 fits the square hole 12 of the square hole cylinder 11 to the bolt head C of the connection bolt B between the segments A, and the nut D, and the square hole cylinder 11 The outer cylinder 13 is fitted to the outer periphery, the anchor bolt 14 attached to the outer cylinder 13 is positioned in a direction away from the segment A, and the exposed end of the anchor bolt 14 is penetrated through the through hole of the inner repair board 3. The inner repair board 3 is pressed and fixed to the inner surface of the segment A by tightening the nut from the outside, and further, the outer repair is performed in parallel with the inner repair board 3 on the outer side of the inner repair board 3 via the anchor bolts 14. After the board 3 is attached and the inner and outer repair boards 3 and 3 are attached, the mortar 4 is filled between the inner repair board 3 and the outer repair board 3.

  In Patent Document 2, the exposed end of the anchor bolt 14 is passed through a through hole of the steel material 5 attached along the inner side surface in the longitudinal direction of the shield tunnel, and the steel material 5 is attached to the segment A by tightening a nut from the outside. A method is also disclosed in which a plurality of steel materials 5 are attached in parallel to the inner surface of the shield tunnel in a longitudinal direction by pressing against the inner surface, and the repair board 3 is attached between the steel materials 5 with bolts.

  Further, in Patent Document 2, the anchor bolt 14 is passed through a through hole of a flange on the segment side of the H-shaped steel 6 where the exposed end of the anchor bolt 14 is attached along the inner side surface in the longitudinal direction of the shield tunnel. The flange 14 on the segment A side of the H-shaped steel 6 and the inner repair board 3 are fixed by passing the exposed end of the bolt 14 through the through hole of the inner repair board 3 and tightening the nut from the outside. A method of attaching the outer repair board 3 by bolts between the inner flanges of the tunnel is also disclosed.

Also, in the case of a composite segment, first drill a hole in the steel plate on the surface with an electric drill, drill the concrete in the segment from the hole with an electric hammer drill, and then drive the anchor bolt into the anchor bolt. H steel support was fixed.
Japanese Patent Publication No. 4-60193 JP 2006-226039 A

  However, in the repair lining of the shield tunnel, a dedicated fixture as in Patent Document 2, that is, the square hole cylinder 11 and the outer cylinder 13 attached to the bolt head C and the nut D of the connecting bolt B between the segments A are combined. Since it must be used for each set, the cost becomes high.

  Also, as in the case of composite segments, drilling holes in the steel plate on the surface with an electric drill, drilling concrete from the hole with an electric hammer drill, and then driving in anchor bolts is a poor workability and time. And costs increase.

  An object of the present invention is to make it possible to fix a supporting work using a joint plate of a segment only by using one dedicated tool in the repair lining of a shield tunnel.

  In order to solve the above problems, in the invention described in claim 1, a bolt member protruding inward of the segment ring is fixed to a joint plate that connects the segment rings to each other, and a support is fixed to the bolt member. , It features a shield tunnel fixing structure.

  The invention according to claim 2 is the support construction fixing structure of the shield tunnel according to claim 1, wherein the bolt member is integrally provided with a fixing fitting welded to the connection end face of the joint plate. And

  Invention of Claim 3 is the support construction fixing structure of the shield tunnel of Claim 1 or 2, Comprising: The said support construction is the said volt | bolt which passed the fixing hole formed in the flange with the H-shaped steel. The member is fixed by tightening a nut.

  The invention according to claim 4 is characterized by a shield tunnel support fixing structure in which a nut member positioned on a side is fixed to a joint plate that connects the segment rings to each other, and a support is fixed to the nut member. To do.

  The invention according to claim 5 is the shield tunnel support fixing structure according to claim 4, wherein the nut member is integrally provided with a fixing plate welded to the connection end face of the joint plate. And

  Invention of Claim 6 is the support construction fixing structure of the shield tunnel of Claim 4 or 5, Comprising: The said support is in the attachment hole formed in the attachment plate which pinches | interposes the flange with H-shaped steel. The passed bolt is fastened and fixed to the nut member.

  The invention according to claim 7 is the shield tunnel support fixing structure according to claim 4, wherein the nut member is integrally provided with a fixing plate that overlaps the joint plate, and the fixing plate is connected to the joint plate. It is characterized by comprising an adjusting bolt and nut that is pressed against and fixed to.

  The invention according to claim 8 is the support construction fixing structure of the shield tunnel according to claim 4 or 7, wherein the support construction is made of a bolt that is passed through a fixing hole formed in the flange of H-shaped steel. The nut member is fastened and fixed.

  According to the present invention, in the repair lining of the shield tunnel, it is possible to fix the support work by using only one dedicated tool by a bolt member or a nut member using the joint plate of the segment. Construction time can be shortened and costs can be reduced.

Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.
[First Embodiment]
FIG. 1 illustrates an H-shaped steel support 1 as a configuration of the first embodiment to which the present invention is applied. As shown in the figure, the H-shaped steel support 1 is an inner periphery of a segment ring of a shield tunnel (not shown). It is processed into an arc shape corresponding to the shape. In this H-shaped steel support 1, 11 is a fixing hole at the center of the flange, 12 is an opening of the web, and 13 is a fixing hole on one side of the flange. The H-shaped steel support 1 is installed on the inner periphery of the segment ring using a bolt member 2.

  FIG. 2 shows an example of the installation of the bolt member 2. As shown in the figure, the bolt member 2 is formed by screwing a male screw 21 into a fixing bracket 22 by a square bar and integrating them. The bolt member 2 is fixed by welding the fixing bracket 22 to the connection end surfaces of the joint plates 31 and 31 of the composite segments 3 and 3 constituting the adjacent segment rings. In this embodiment, the male screw 21 is passed through the fixing hole 11 at the center of the flange of the H-shaped steel support 1, and the nut 24 is tightened by applying a washer 23 to the male screw 21 in the web opening 12, thereby The H-shaped steel support 1 is fixed to the ring.

FIG. 3 shows an example of installation of the formwork panel 4 to the H-shaped steel support 1 installed on the segment ring. 32 is a recess for joint connection work, 33 and 34 are for connecting the joint plates 31 and 31 to each other. Bolts and nuts. The joint connection recess 32 is filled with concrete.
As shown in the figure, the formwork panels 4 and 4 for repair lining are bolt nuts by sandwiching both sides of the flange of the H-beam support 1 between the formwork panels 4 and 4 and the mounting plates 41 and 41. By fixing with 42 and 43 respectively, it is installed in the H-section steel support 1. In addition, stoppers 44 and 44 for preventing rotation of the mounting plates 41 and 41 are embedded in the formwork panels 4 and 4, respectively.

  Thus, using the joint plates 31 and 31 of the composite segments 3 and 3 constituting the adjacent segment rings, and using the bolt member 2 welded to the connection end surface of the joint plates 31 and 31, the H-section steel support work is performed. 1 can be fixed. Therefore, in the repair lining of the shield tunnel, the workability can be improved, the construction time can be shortened, and the cost can be reduced.

[Second Embodiment]
4 and 5 show an installation example of the H-section steel support 1 as a second embodiment to which the present invention is applied. The same reference numerals are given to the same parts as those in the first embodiment described above. Description is omitted.
That is, in the second embodiment, as shown in the figure, the male screw 21 is passed through the fixing hole 12 on one side of the flange of the H-shaped steel supporter 1, the washer 23 is applied to the male screw 21, and the nut 24 is tightened. An H-section steel support 1 is fixed to the segment ring.

[Third Embodiment]
6 and 7 show an installation example of the H-section steel support 1 as a third embodiment to which the present invention is applied, and the same reference numerals are given to the same parts as those in the first embodiment described above. Description is omitted.
In the third embodiment, a nut member 5 is used instead of the bolt member 2 described above. That is, as shown in the figure, the nut member 5 is integrated by welding a fixing bracket 52 made of a square bar to the center of a horizontally long attachment plate 51, and on the opposite side of the attachment plate 51 on both sides. The laminated plate 53 is welded and integrated, and the female screw 54 penetrating from the laminated plate 53 to the attachment plate 51 is processed.

  The nut member 5 is fixed by welding the fixing fitting 52 to the connection end surfaces of the joint plates 31 and 31 of the composite segments 3 and 3 constituting the adjacent segment rings. In this embodiment, the flange of the H-beam support 1 is applied to the attachment plate 51, and bolts 56 and 56 are passed through the mounting holes of the mounting plates 55 and 55 overlapped on both sides of the flange to the female screws 54 and 54. By tightening each, the H-beam support 1 is fixed to the segment ring.

  Thus, by using the nut member 5 having the horizontally long attachment plate 51, it is not necessary to machine a fixing hole in the flange of the H-shaped steel support 1, so the strength of the H-shaped steel support 1 is reduced. There is nothing.

[Fourth Embodiment]
FIG. 8 and FIG. 9 show an installation example of the nut member 6 as a fourth embodiment to which the present invention is applied. The same reference numerals are given to the same parts as those in the first embodiment, and the description thereof is omitted. To do.
In the fourth embodiment, a nut member 6 is used instead of the bolt member 2 described above. That is, the nut member 6 is integrated by welding a long nut 61 to one surface of the fixed plate 62 as shown. A circular hole 63 is formed in the fixing plate 62, and a bridge plate 64 is integrated by welding on the same surface as the long nut 61, and an adjustment bolt 65 is screwed into the bridge plate 64 for adjustment. The protruding amount of the adjusting bolt 65 can be adjusted by the nut 66.

  The fixing plate 62 of the nut member 6 is overlapped on the side surfaces of the joint plates 31 and 31 of the composite segments 3 and 3 constituting the adjacent segment rings. At this time, the head of the bolt 33 that joins the joint plates 31 and 31 is located in the circular hole 63 of the fixing plate 62. Then, the protruding amount of the adjusting bolt 65 screwed into the bridge plate 64 is adjusted by the adjusting nut 66, and the protruding end of the adjusting bolt 65 head is placed on the wall on the opposite side of the joint connecting work recess 32 of the composite segment 3. Press. The adjustment bolt 65 holds the fixing plate 62 against the joint plate 31 so that the fixing plate 62 is pressed against the joint plate 31, so that the fixing plate 62 can be prevented from falling from the joint plate 31.

  In this embodiment, the H-shaped steel support 1 is fixed to the segment ring by tightening the long nut 61 through the bolt 67 in the fixing hole 12 on one side of the flange of the H-shaped steel support 1.

  In this way, the fixing plate 62 of the nut member 6 is overlapped on the side surfaces of the joint plates 31 and 31 of the composite segments 3 and 3 constituting the adjacent segment rings, and is pressed and fixed by the adjusting bolt nuts 65 and 66. Even if the bolt member 2 and the nut member 5 cannot be welded at the repair lining location of the shield tunnel in the presence of spring water, the nut member 6 for installing the H-shaped steel support 1 can be fixed to the joint plate 31. .

In addition, in the above embodiment, although the supporting work was made into the H-section steel, this invention is not limited to this, The supporting work by other steel materials may be sufficient.
In the embodiment, the composite segment is used. However, other segments may be used, and it is needless to say that other detailed structures can be appropriately changed.

The structure of 1st Embodiment to which this invention is applied is shown, The side view which illustrated the support work (a), sectional drawing (b) along the arrow BB line, and the enlarged detail of the arrow C part It is a figure (c). The principal part perspective view (a) which showed the example of installation of the bolt member of FIG. 1, the front view (b), sectional drawing (c) along the arrow CC line, and the arrow of figure (b) It is sectional drawing (d) along the DD line. 1 is a cross-sectional plan view (a) showing an example of installation of a formwork to the support in FIG. 1, a cross-sectional view (b) along the arrow BB line, and a cross-sectional view along the arrow CC line. They are (c), sectional drawing (d) along the arrow DD line, and sectional drawing (e) along the arrow EE line. The 2nd Embodiment to which this invention is applied is shown and it is the principal part perspective view which showed the example of installation of the support work. A cross-sectional plan view (a) of the main part of FIG. 4, a cross-sectional view (b) along the arrow BB line, a cross-sectional view (c) along the arrow CC line, and an arrow D-- It is sectional drawing (d) along D line, and sectional drawing (e) along the arrow EE line. The 3rd Embodiment to which this invention is applied is shown and it is the principal part perspective view which showed the example of installation of the support work. It is the principal part perspective view (a) which showed the example of installation of the nut member of FIG. 6, and the perspective view (b) of the nut member. The 4th Embodiment to which this invention is applied is shown and it is the principal part front view which showed the example of installation of a nut member. The cross-sectional plan view (a) which showed the example of installation to the nut member and formwork of FIG. 8, sectional drawing (b) along the arrow BB line, and along the arrow CC line They are sectional drawing (c), sectional drawing (d) along the arrow DD line, and sectional drawing (e) along the arrow EE line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Supporting work 11 Fixing hole 12 Opening part 13 Fixing hole 2 Bolt member 21 Male screw 22 Fixing bracket 23 Washer 24 Nut 3 Composite segment 31 Joint plate 32 Joint connection work recessed part 33/34 Bolt nut 4 Formwork panel 41 Mounting plate 42 43 bolt nut 44 stopper 5 nut member 51 fitting plate 52 fixing bracket 53 overlap plate 54 female screw 55 mounting plate 56 bolt 6 nut member 61 long nut 62 fixing plate 63 circular hole 64 bridge plate 65 adjustment bolt 66 adjustment nut 67 bolt

Claims (8)

A bolt member protruding inward of the segment ring is fixed to the joint plate that connects the segment rings to each other.
A shield tunnel support fixing structure characterized in that a support is fixed to the bolt member.   2. The shield tunnel support fixing structure according to claim 1, wherein the bolt member integrally includes a fixing metal member welded to a connection end surface of the joint plate.   3. The shield tunnel support fixing according to claim 1, wherein the support is fixed by tightening a nut to the bolt member that is passed through a fixing hole formed in a flange of the H-shaped steel. Construction. Fix the nut member located on the side to the joint plate that connects the segment rings to each other,
A shield tunnel support fixing structure characterized in that a support is fixed to the nut member.   5. The shield tunnel support fixing structure according to claim 4, wherein the nut member is integrally provided with a fixing plate welded to a connection end surface of the joint plate.   The shield according to claim 4 or 5, wherein the support is fixed by tightening a bolt, which is passed through a mounting hole formed in a mounting plate sandwiching the flange thereof with H-shaped steel, into the nut member. Tunnel support fixing structure.   5. The shield tunnel support according to claim 4, wherein the nut member is integrally provided with a fixing plate that overlaps the joint plate, and an adjustment bolt nut that presses and fixes the fixing plate to the joint plate. Fixed structure.   The support for the shield tunnel according to claim 4 or 7, wherein the support is fixed by tightening a bolt passed through a fixing hole formed in a flange of H-shaped steel into the nut member. Fixed structure.

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