JP6644657B2 - Temporary sleepers for shield tunnel construction - Google Patents

Description

  The present invention relates to a temporary sleeper useful for shield tunnel construction.

  In general, in shield tunnel construction, equipment and equipment required for the installation and construction of a segment to be the primary lining of the tunnel following a shield machine that advances while excavating a face are carried in and out, or A bogie such as a trailing bogie or a transport bogie used to carry out excavated soil is used. Rails are laid in the segment of the installed primary lining so that the bogie can run until immediately after the shield machine, but temporary sleepers are for supporting the rails, and lay scaffold boards. This is a temporary member that serves as a girder when making a passage. Conventionally, H-shaped steels have been mainly used for temporary sleepers, but temporary sleepers of various forms and structures have been proposed and put to practical use in addition to the above.

  Of these, temporary sleepers used in the construction of shield tunnels having a relatively small diameter (small cross section) have the fact that the rail surface cannot be made too high because the height of the formed tunnel is small. For example, as shown in FIG. 10, when a pipe such as a plastic pipe PL is used for the secondary lining of the iron segment S, if the outer diameter of the secondary lining pipe PL is slightly smaller than the segment inner diameter, In order to carry the plastic pipe PL for secondary lining into the tunnel in which the primary lining by the segment S has been completed, the temporary sleeper M made of H-shaped steel for primary lining shown in FIG. It was necessary to install a special temporary rail R3 whose rail surface height was naturally limited for the transport trolley PT for transporting the plastic pipe PL for secondary lining shown in FIG. In FIG. 9, BT is a trailing bogie, GT is a scrap steel wheel, R1 and R2 are temporary rails at the time of primary lining, Bc is a belt conveyor, Ap is a wind tube, and Fp is a scaffold plate.

  Incidentally, the temporary rail R3 having a lower rail surface for carrying in the conventional plastic pipe PL for secondary lining illustrated in FIG. 9 is formed in a special shape having a substantially inverted L-shaped cross section. Then, it is directly attached to the joint (flange) of the segment S by welding. For this reason, the labor and cost for manufacturing the temporary rail R3 and the labor for welding to the segment S are required, and the practicality is low in this aspect. In addition, a metal pipe other than a plastic pipe is used for the secondary lining pipe PL. However, any of the pipes used for the secondary lining has the above problem.

  In view of the above problems, the inventor of the present invention has proposed a temporary sleeper for shield tunnel construction in which a rail surface to be supported and laid by a sleeper can be formed at a low position, in particular, a secondary lining made of plastic. As shown in Patent Document 1, a temporary sleeper useful in the case of constructing a pipe such as a steel pipe or a cast iron pipe has been previously proposed.

  That is, although the temporary sleeper of Patent Document 1 proposed earlier is not shown, a flat steel band is formed so as to form a chord with respect to an arc-shaped inner surface formed by the bottom side of the joint surface of the flanges of the embedded iron segments. A sleeper plate is erected in a substantially horizontal direction, and the left and right ends of the sleeper plate are welded to the inner surface of the segment or fixed with special clamps, and the lower surfaces of both ends of the sleeper plate and the lower surface are fixed. In this case, a filling made of a round steel material is disposed in a gap formed by the inner surface of the segment opposed to the above, and a temporary rail (hereinafter, simply referred to as a rail) is laid almost directly above the filling.

In the above temporary sleepers, the length of the strip-shaped plate material to be used and the thickness of the round steel material vary depending on the inner diameter of the segment to be applied, the size of the rail used and the width between rails (rail gauge), etc. For each construction, it was necessary to design and manufacture strip-shaped plates and fillings of round steel.
For this reason, the above-mentioned temporary sleepers cannot be applied to places other than sites having the same conditions, and there is a problem that they cannot be removed and reused after use, or are difficult to reuse.
Further, in the case of a reinforced concrete segment (hereinafter, referred to as an RC segment), it cannot be fixed to the inner surface of the segment by welding or clamping, and the contact surface between the end of the round steel material and the strip-shaped plate material that is receiving the load and the inner surface of the segment. Since iron is harder than concrete, the inner surface of the segment is flawed, or some measures must be taken to prevent rolling of the round bar, making it difficult to use for RC segments. There was a problem.

  In view of the above problems, the inventors of the present application can be applied to both the iron segment and the RC segment, and are suitable for use in a segment having a relatively small cross section. Patent Document 2 proposes a temporary sleeper for shield tunnel construction that can be used and eliminates the need for welding to a segment when installing a temporary sleeper, and thus allows easy removal and reuse after use. .

  The improved temporary sleeper proposed in Patent Document 2 has a sleeper plate arranged so as to traverse the inner surface of the connected segments in a horizontal posture in a chord shape, and mounts the left and right ends of the sleeper plate on the upper surface. A support block, which is supported and arranged on the inner surface of the segment, wherein the support block is arranged in parallel in a vertical posture, and two support brackets on which the sleeper plate is mounted on the upper surface; and A rail holding portion formed at the outer end of the upper surface of the support bracket to hold the bottom of the rail; a round steel bar erected between the two support brackets to couple the two support brackets; A temporary sleeper was provided with a rail fixture (standard or separately manufactured rail retainer) attached to the plate.

  When the segment to be installed is made of iron, the two supporting brackets sandwich the two abutting flanges that are the joints of the segments as main girders, and the outer surface of the round steel bar is the upper surface of the main girder. And is mounted on the main girder. The support bracket has a tapped screw hole or a welded nut so that the bracket can be fixed to the main girder by bolts.

  When the segment is an RC segment, the lower surfaces of the two support brackets are directly opposed to the inner surface of the RC segment. Then, the inner surface of the RC segment may be damaged by the two support brackets. In order to avoid this, a bearing elastic plate, for example, a rubber plate member is interposed between the inner surface of the segment and the lower surface of the support bracket.

  The temporary sleeper of the above-mentioned document 2 is installed so that two supporting brackets for the iron segment sandwich the two overlapping flanges of the iron segment joint, while the above-mentioned 2nd for the RC segment. This is an installation mode in which the two bottom surfaces of the two support brackets are placed in contact with the inner surface of the RC segment.

  However, in the iron segment, in the case where the horizontal girder or the reinforcing L-shaped plate is provided on the flange, the gap between the two support brackets may be obstructed by the horizontal girder or the L-shaped plate and the flange may not be sandwiched. Occurred.

  The above-mentioned temporary sleepers which cannot be applied to the iron segments provided with the cross beams and the reinforcing L-shaped plates were originally developed and designed as temporary sleepers which can be directly applied to both the iron segments and the RC segments. The development purpose was not able to be completed by the expression of.

Patent Literature 1 Japanese Patent No. 3725962 Patent Literature 2 JP 2014-9558 A

  Therefore, the present invention has a problem in that the temporary sleeper of Patent Document 2 described above, that is, even when a cross beam or a reinforcing L-shaped plate is provided on the flange of the iron segment, it can be installed as a temporary sleeper on the iron segment. Of course, it is an object to provide a temporary sleeper that can be directly installed on the RC segment.

  The configuration of the temporary sleeper of the present invention made for the purpose of solving the above-mentioned problem, a crosspiece member horizontally arranged in a horizontal posture in the vicinity of the inner surface bottom of the connected segment and a crosspiece, and left and right end portions of this crosspiece member A pair of left and right support brackets mounted on the upper surface and supported on the inner surface of the segment, the support bracket having an inclined contact surface having a bottom surface in contact with the inner surface of the segment, and an outer end of the support bracket A rail holding portion that supports the outside of the rail bottom portion having an inwardly substantially U-shape is provided, and the sleeper member is connected to or abutted on the inner surface of the segment provided to be suspended substantially in the center portion, A rail fixing device for fixing the inside of the rail bottom to the sleeper member is provided. The support bracket is made of a single steel plate.

The sleeper member according to the present invention includes a flat plate portion crushed by inserting a reinforcing material at both ends of the steel pipe whose length is adjusted for the segment, or crushed without the reinforcing material.
Further, the sleeper member is cut into two at an intermediate portion in the longitudinal direction, and support brackets are respectively provided on the flat portions of the separated left and right sleeper members to form left and right sleeper block bodies. Next, a bar member for adjusting the length of the sleeper is bolted to the separated middle portion of the left and right sleeper block bodies to form the temporary sleeper of the present invention. This is because even if the rail gauge (width) is changed, the temporary sleeper of the present invention can be installed at a site where the condition is different (the inner diameter of the segment used is different) by simply replacing the length adjusting bar member with a different length. This is because it can be used on site.

  When applying the temporary sleeper of the present invention to segments having different cross-sectional diameters, it is preferable that the lower surface of the support bracket is formed as an inclined contact surface. This is because both ends of the sleeper member can be supported along the inner surfaces of the segments having different curvatures. With this configuration, the present invention can be applied to segments having a wide cross-sectional diameter ranging from about 2 m to about 12 m in inner diameter.

In the present invention, it is more preferable that the inclined contact surface has a contact portion having a curved surface. The inclined contact surface or the contact portion having a curved surface with the corresponding contact surface contributes to prevention of slippage and rolling when the temporary sleeper is used, and also prevents the segment from being damaged. The abutment preferably has a width at least about three times the thickness of the support bracket when viewed from a plane. With this configuration of the contact portion, the temporary sleeper can be stably installed on the upper surface of the flange of the joint portion of the iron segment or the inner surface of the RC segment.
The slippage prevention and the rolling prevention are reinforced by connecting or abutting a connecting piece hanging at a substantially central portion in the length direction of the sleeper member to the inner surface of the segment. The connecting piece is also provided on the length adjusting bar member joined to the left and right sleeper block bodies.

  Here, the connecting piece may be selected from two or more connecting pieces having different lengths, or may be formed to be adjustable in length. This is to cope with the case where the distance from the approximate center of the sleeper member to the inner surface of the segment is different. As an example of the length adjusting structure of the connecting piece, the position of the overlapping bolt hole of two connecting piece members having two or more bolt holes arranged in the length direction is changed, and the two connecting pieces are connected by bolts and nuts. There is a structure for fixing a single member. The length adjusting structure of the connecting piece is not limited to the above example.

  The support bracket provided on the flat plate portion at both ends of the sleeper member of the present invention is formed of a single steel plate, has a support portion of the flat plate portion on the upper surface, and a holding portion on the outside of the rail bottom, and has an inclined contact surface on the lower surface. Is formed.

  The sleeper member and the length adjusting bar member can be formed by selecting an L-shaped steel, a grooved steel, a light grooved steel, or the like in accordance with the strength required for the temporary sleeper, in addition to the steel pipe. Further, a rib for reinforcing the formed sleeper length adjusting bar member may be attached. When a steel pipe is used for the length adjusting bar member, a steel pipe or flat steel may be interpolated as a reinforcing material inside the steel pipe.

  The sleeper member and the length adjusting bar member usually exist as a chord-shaped straight member with respect to the arc of the segment inner diameter. For this reason, when the segment has a medium section or a large section, the ceiling is high, so that it is possible to easily walk on the segment without laying a scaffold plate on a sleeper member or a length adjusting bar member. However, without providing a scaffold, there is a danger of tripping on the sleeper members. In order to avoid the danger of tripping without providing a scaffold, the middle part of the sleeper member and the portion of the length adjusting bar member may be bent in an inverted arch shape along the inner diameter of the segment. In this case, it is desirable that the chord-shaped straight material is a flat steel.

  ADVANTAGE OF THE INVENTION According to this invention, the sleeper member traversed in the shape of a chord in the horizontal posture in the vicinity of the bottom of the inner surface of the connected segment, and the left and right ends of the sleeper are supported on the upper surface and arranged on the inner surface of the segment. A pair of left and right support brackets, wherein the support bracket has an inclined contact surface whose bottom surface is in contact with the inner surface of the segment, and an outer side of a rail bottom that is substantially U-shaped inward at an outer end of the support bracket. A rail holding portion for supporting, the sleeper member is connected to or abutted on the inner surface of the segment provided to be suspended in a substantially central portion, and for fixing the inside of the rail bottom to the sleeper member. Since it is configured as a temporary sleeper with the rail fixing device, it can be used not only for the iron segment but also for the RC segment as it is.

Therefore, unlike the related art, it is not necessary to prepare temporary sleepers for each segment material and for each dimension, which is rational and economical in this regard.
In addition, since the temporary sleeper is not welded to the segment, it can be easily removed from the applied segment after use and can be reused, which is reasonable and economical in this regard.
In addition, the sleeper of the present invention has a weight of about 1/6 or less, particularly 1/10 or less in the case of a large section segment, as compared with an H-shaped steel sleeper generally used as a temporary sleeper. As a result, the use of steel materials can be reduced, transportation costs and energy can be significantly reduced.

The front view of the example which applied the first example of the temporary sleeper of the present invention to a steel segment. The top view of the principal part of the temporary sleeper of FIG. The front view of the example which applied the 2nd example of the temporary sleeper of this invention to an iron segment. The top view of the temporary sleeper of FIG. FIG. 2 is a front view of an example in which the temporary sleeper of the first example in FIG. 1 is applied to an RC segment. The front view of the example which applied the temporary sleeper of the 2nd example of FIG. 3 to RC segment. The front view of the 3rd example of the temporary sleeper of this invention. FIG. 8 is a plan view of a main part of the temporary sleeper in FIG. 7. The front view which shows the installation example of the conventional temporary sleeper. The front view of the example of the conventional temporary rail for exclusive use of the secondary lining.

Next, an embodiment of the present invention will be described with reference to the drawings.
In the case where the segments assembled in the tunnel by the shield machine are made of iron, the segments are connected to each other at flanges 1 provided at both ends of each segment. FIG. 1 is a front view in which a first example of a temporary sleeper BP of the present invention is installed on a portion of a flange 1 of an iron segment, and FIG. 2 is a plan view of a main part of the temporary sleeper BP of FIG.

  Connected segments that are sequentially buried in holes drilled by the shield machine and formed in the tunnel body include temporary rails R (hereinafter simply referred to as rails R) laid for traveling of various vehicles for construction and the like. 1), the temporary sleeper BP of the present invention is installed thereon with the flanges 1 of the connected front and rear segments as main girders (see FIG. 1).

The first example of the temporary sleeper BP of the present invention is, as schematically shown in FIG. 1 and FIG. 2, a sleeper member 2 having flat plate portions 21 and 22 in which both right and left ends of a steel pipe are crushed in a plane, and an iron segment connection. The flat plate portions formed at both ends in the length direction of the sleeper member 2, the lengths of which are adjusted so as to form a chord with respect to the arc surface formed by the bottom upper surface of the flange 1 of the portion (hereinafter also referred to as the main girder 1). A pair of left and right support brackets 3, 3 provided in a standing posture on the flat plate portions 21, 22 to support the members 21, 22 from below are formed as main members. The support bracket 3 is formed of one steel plate.
The flat plates 21 and 22 are crushed by inserting reinforcing members 21a and 22a made of flat steel or steel pipe before being crushed, thereby reinforcing the flat plates 21 and 22. It is preferable that the reinforcing members 21 a and 22 a enter the inside of the sleeper member 2 deeper than the entire length of the flat plate portions 21 and 22.

  The pair of left and right support brackets 3 and 3 are symmetrical with respect to the center line in the vertical direction of the segment. However, since they are the same structure by the same member, the following description will be made on one of the support brackets (left side in FIG. 1). 3 will be described. The same reference numerals are used for the support bracket 3 on the right side in FIG.

On the upper surface of the support bracket 3, in order to mount and support the flat plate portions 21 and 22 of the sleeper member 2, there is formed a one-step lowered horizontal support surface 31 that accommodates the thickness of the flat plate portions 21 and 22. In addition, the outer flared portions Ra, Rb at the bottom of the rail R placed on the temporary sleeper BP (outward of the segment, the same applies hereinafter) at the bottom are fitted with each other. A rail holding portion 32 having a substantially inverted U-shaped cross section to be supported is provided outside the support surface 31.
The lower surface of the support bracket 3 is formed on an inclined contact surface 33 along the inner peripheral surface of the segment (or flange 1) on which the support bracket 3 is installed, and both left and right ends of the inclined contact surface 33 are curved surfaces. 33a. The inner surface of the curved surface 33a (close to the center of the segment, the same applies hereinafter) is provided with a plate-like abutting portion 34 made of rubber or the like reinforced with an iron plate. The contact portion 34 can be omitted if the segment does not have a defect or does not matter.

At the bottom of the rail R placed on the temporary sleeper BP of the present invention, the overhanging portion Rb opposite to the outer overhanging portion Ra supported by the rail holding portion 32 of the support bracket 3 is as shown in FIG. The rail fixing member 4 includes bolts 4a and nuts 4b attached to holes 2a formed in the flat plate portions 21 and 22 of the sleeper member 2 and clips 4c fixed to the bolts and nuts 4a and 4b. Are fixed to the flat plate portions 21 and 22. As described above, the first example of the temporary sleeper BP of the present invention on which the rail R is placed is formed. It should be noted that either a standard product or a separately manufactured rail retainer can be used as the rail fixing member 4.
At a substantially central portion in the length direction of the sleeper member 2, a hanging tongue piece having a bolt hole is provided as a connecting piece 23, and a connecting hole 23 of the sleeper member 2 and a bolt hole provided on the bottom of the flange 1 are provided. The connecting pieces 1a are bolted together to supplement the prevention of slippage and rolling of the temporary sleeper BP and to supplement the support of the load applied to the sleeper member 2.

The first example of the temporary sleeper BP of the present invention formed as described above is arranged on the flange 1 which is a joint of the iron segments in a shape as shown in the front view of FIG.
That is, the sleeper member 2 is placed on the flange 1 at the abutment portions 34, 34 provided on the support brackets 3, 3 provided on the left and right flat plate portions 21, 22 so as to form a chord-like shape on the main girder formed by the flange 1. Placed in
In other words, the sleeper member 2 is mounted on the two connected flanges 1 at the contact portions 34, 34 provided on the inclined contact surface 33, with the support brackets 3, 3 at the left and right ends thereof, and at the same time, The connecting piece 23 hanging down substantially at the center of the sleeper member 2 is bolted to the connecting piece 1a provided at the center of the bottom of the flange 1 to be installed on the flange 1 of the iron segment. The temporary sleeper BP of the present invention installed in the primary lining segment in this manner supports the rail R associated with the primary lining, and can use the rail R as it is as a rail for the secondary lining as needed. .

  The first example of the temporary sleeper BP of the present invention described above is installed on the iron segment using the flange 1 of the iron segment as the main girder, but the temporary sleeper BP of the present invention is also provided on the RC segment S as illustrated in FIG. Since this can be applied as it is, this point is described below.

Since the RC segment S does not have a flange 1 such as an iron segment at the connection portion, the connected segment S has an arc surface whose inner surface is substantially flat as a whole.
Therefore, in the first example of the temporary sleeper BP of the present invention, as shown in FIG. 5, when the temporary sleeper BP is installed on the RC segment S, the contact portion 34 provided on the bottom of the pair of left and right support brackets 3, 3 is provided. , 34 are installed in such a manner as to abut on the inner surface Is of the segment S. In FIG. 5, the connecting piece 23 provided in the sleeper member 2 has a length such that the lower end can abut on the inner surface Is of the segment S. The connecting piece 23 may have a planar contact portion at its lower end.

  In the temporary sleeper BP of the present invention applied to the RC segment S of FIG. 5, the contact portions 34, 34 having curved surfaces provided at the bottoms of the left and right support brackets 3, 3 and the contact portion of the connecting piece 23 are formed by the segment inner surface Is. Directly in contact with In addition, the contact portion including the contact portion of the connecting piece 23 corresponds to a large load and does not damage the inner surface of the RC segment S, and does not allow rust generated at the corresponding contact portion to adhere to the segment surface. For example, an iron plate covered with a rubber-based material or a plate made of a plated steel plate may be used. Of course, the temporary sleeper BP of the present invention is not limited to the contact portion of this structure.

  In the above embodiment, the temporary sleeper BP of the present invention is made up of the flat plate portions 21 and 22 formed by crushing both ends of the steel pipe illustrated in FIGS. Although the temporary sleeper BP according to the second embodiment of the present invention shown in FIGS. 3 and 4 can be used in the present invention, the temporary sleeper BP is configured as follows. Will be described.

That is, in the second example of the temporary sleeper BP of the present invention shown in FIGS. 3 and 4, the right and left sleeper blocks are separated by cutting off substantially the center of the sleeper member 2 of the first example described with reference to FIGS. 1, 2 and 5. Formed on the bodies 2L, 2R, a sleeper length adjusting bar member 24 having a connecting piece 23 hanging down substantially in the center is inserted into the sleeper block bodies 2L, 2R of the separating section, and these are joined by bolts. The temporary sleeper BP according to the second embodiment of the present invention is capable of adjusting the total length of the temporary sleeper BP. For this reason, the length adjusting bar member 24 has a plurality of bolt holes 24a along its length direction, and the bolt holes 24a are selected and bolts provided in the left and right sleeper block bodies 2L, 2R. Bolts B were screwed from the holes so that the length of the temporary sleeper BP could be adjusted to different cross-sectional inner diameters of the segments and differences in the rail gauge. 3 and 4, the same members and the same parts as those in FIGS.
FIG. 6 is a front view of an example in which the second example of the temporary sleeper BP of the present invention, which can be applied to the iron segment described with reference to FIGS. In FIG. 6, the same members and the same parts as those in the examples shown in FIGS. In the temporary sleeper BP of FIG. 6 applied to the RC segment S, the connecting piece 23 in which the lower end of the connecting piece abuts on the inner surface Is of the segment, or the connecting piece 23 that can be adjusted to that length, is provided. Used.

  In the temporary sleeper BP of the present invention, the right and left sleeper block bodies 2L and 2R which are provided with the left and right support brackets 3 and which are separated in the middle and the sleeper length adjusting bar member 24 described with reference to FIGS. In the temporary sleeper BP of the sleeper length adjusting type, the position of the bolt hole 25 of the length adjusting bar member 24 is selected and used, or the one in which the length of the length adjusting bar member 24 and the length of the connecting piece 23 are variously different. If prepared in advance, the temporary sleeper BP of the present invention applicable to a segment having a small cross section and a segment having a large cross section can be used.

  In the temporary sleeper BP of the present invention, a steel pipe is used for the sleeper member 2, the sleeper block bodies 2L and 2R, and the length adjusting bar member 24, and flat steel or steel pipes are used for both ends of the sleeper member 2 including the sleeper block bodies 2L and 2R. After inserting the reinforcing members 21a and 22a, the portions may be crushed by pressing to have reinforcing plate portions 21 and 22. For the sleeper member 2 (including the sleeper block bodies 2L and 2R) and the length adjustment bar member 24, in addition to the steel pipe, use of an L-shaped steel, a grooved steel, a light grooved steel, or the like is selected by using a reinforcing rib. Can be used. FIGS. 7 and 8 show a third example of the temporary sleeper BP of the present invention formed by using L-shaped steel for the sleeper member.

In the third example of the temporary sleeper BP of the present invention shown in FIGS. 7 and 8, reference numeral 20 denotes a sleeper member made of L-shaped steel, and a pair of left and right support brackets 3, 3 is provided at both ends of the sleeper member 20. This is the same as the two examples of the temporary sleeper BP of the present invention described above.
In the temporary sleeper BP shown in FIGS. 7 and 8, the left and right support brackets 3, 3 are provided on the near side of the L-shaped steel horizontal member 20H (opposite to the vertical member 20V). A contact portion 34 having a substantially U-shaped cross section provided with a holding piece 34a for holding the support bracket 3 from both sides is provided on the inclined contact surface 33 at the bottom of the holding member 3. The holding piece 34a is a screw such as a bolt. Although the temporary sleeper BP of the previous embodiment differs from the temporary sleeper BP in that it is fixed to the support bracket 3 by the member 34b, other configurations are substantially the same. Note that this temporary sleeper BP also has the connecting piece 23 hanging down substantially in the center of the sleeper member 2, and the connecting piece 23 is connected to the connecting piece 1 s on the inner surface of the segment S. .

  The present invention is as described above, and an iron segment in which a cross beam or a reinforcing L-shaped plate is provided in a flange, or an iron segment in which a precursor cross beam or the like is not provided can be applied to any segment of the RC segment, Moreover, since welding to the segments is not performed when installing the temporary sleepers, it is possible to provide a temporary sleeper for shield tunnel construction that can be easily removed after use and can be reused.

S RC segment R Temporary rail 1 Iron segment flange (main girder)
2 sleeper members 2L, 2R sleeper block bodies 21, 22 flat plate portion 23 hanging connecting piece 3 support bracket 31 flat plate support surface 32 rail holding portion 33 inclined contact surface 34 contact portion 4 having a curved surface 4 rail fixing tool

Claims (6)

A sleeper member horizontally arranged in a chord-like shape in a horizontal posture in the vicinity of the inner surface bottom of the connected segment, and both ends in the longitudinal direction of the sleeper member are supported on the upper surface, respectively , and are disposed on the inner surface of the segment. A support bracket made of one steel plate, provided with only one support bracket at each of both ends in the length direction of the sleeper member , wherein the support bracket abuts its bottom surface to the inner surface of the segment. An inclined abutment surface, a rail holding portion for supporting an outside of a bottom portion of the rail having an inwardly substantially U shape at an outer end portion of the support bracket, wherein the sleeper member is provided so as to hang down at a substantially central portion. a connecting piece is coupled or abut the segment inner surface, shielding tunnel construction for temporary sleepers, characterized in that it comprises a rail fastener for securing the inside of the rail bottom portion to the sleepers member. The temporary sleeper for shield tunnel construction according to claim 1, wherein the sleeper member includes a flat plate portion in which a reinforcing material is put into both ends of a steel pipe whose length is adjusted for the segment and is crushed. A sleeper member horizontally arranged in a chord-like shape in a horizontal posture in the vicinity of the inner bottom surface of the connected segment, and the sleeper member is formed into left and right sleeper block bodies by being separated into right and left at a substantially central portion. the sleeper block of the sleepers member having attached length adjustment bar member having a connecting piece provided with a connecting bolt hole coupled or contact with the segment inner surface at a substantially central portion with a bolt stop, the sleepers member And a pair of left and right steel plate support brackets disposed on the inner surface of the segment while supporting the left and right ends on the upper surface, and the support bracket has a bottom surface in contact with the inner surface of the segment. A contact holding surface, and a rail holding portion for supporting an outside of a rail bottom portion having an inwardly substantially U-shape at an outer end portion of the support bracket, wherein the sleeper member is provided so as to hang down at a substantially central portion. A connecting piece is coupled or contact, the shield tunnel construction for temporary sleepers, characterized in that it comprises a rail fastener for securing the inside of the rail bottom portion to the sleepers member. The temporary sleeper for shield tunnel construction according to claim 3, wherein the connecting piece that is connected or abutted on the inner surface of the segment has an adjustable length. A sleeper member horizontally arranged in a chord-like shape in a horizontal posture near the bottom of the inner surface of the connected segment, and a pair of left and right support brackets placed on the inner surface of the segment while supporting and supporting both ends of the sleeper member on the upper surface And the support bracket has a bottom surface as an inclined contact surface that contacts the inner surface of the segment, and a contact portion of the inclined contact surface with the inner surface of the segment is larger than a width (thickness) of the inclined contact surface. An inclined contact surface having a contact portion having a width, and a rail holding portion that supports the outside of the bottom of the rail that has an inwardly substantially U shape at the outer end of the support bracket, and the sleeper member is substantially A shield tunnel, comprising: a connecting piece that is attached to or abuts on the inner surface of the segment that is suspended from the center and a rail fixing tool that fixes the inside of the bottom of the rail to the sleeper member. Construction for the temporary sleepers. A sleeper member horizontally arranged in a chord-like shape in a horizontal posture in the vicinity of the inner surface bottom of the connected segment, and the sleeper member is formed into left and right sleeper block bodies separated substantially right and left at a substantially central portion. The sleeper block body has a plurality of bolt holes along the length direction, and has a length adjusting bar member that can select the bolt hole and combine with the left and right sleeper block bodies to adjust the length of the sleeper. A sleeper member, and a pair of left and right support brackets disposed on the inner surface of the segment while supporting and supporting both end portions of the sleeper member on the upper surface, and the support bracket has an inclined contact which abuts the bottom surface on the inner surface of the segment. A contact surface, and a rail holding portion for supporting the outside of the bottom of the rail having an inwardly substantially U-shape at an outer end of the support bracket, wherein the length adjusting bar member of the sleeper member hangs down to a substantially central portion. Before A temporary piece for shield tunnel construction, comprising a connecting piece joined or abutted to the inner surface of the segment, and the sleeper block body having a rail fixing tool for fixing the inside of the rail bottom to the sleeper member. Sleepers.

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