JP6029856B2 - Placing equipment for filler and lining concrete in tunnel waterproofing method - Google Patents

Description

The present invention provides a tunnel waterproofing construction method for increasing the durability of the tunnel (the so-called high ETAS method), to a setting tool of the filler and lining concrete.

  Conventionally, for example, in a tunnel waterproofing method as shown in Patent Document 1 below, a filler is supplied between a waterproof sheet wound around a formwork along the primary lining concrete of the tunnel and the primary lining concrete. Thereafter, secondary lining concrete is supplied between the waterproof sheet and the formwork.

Japanese Patent No. 4108460

  In the conventional tunnel waterproofing method, the formwork used at the time of supplying the filler and the formwork used at the time of supplying the secondary lining concrete are different from each other. These formwork had to be re-installed, resulting in reduced work efficiency and increased equipment costs.

  The present invention can be used both as a formwork used during the work of supplying the filler and a formwork used during the work of supplying the secondary lining concrete, thereby improving work efficiency and reducing equipment costs. The purpose is to measure.

The present invention will be described with reference to the drawings of the following embodiments (first embodiment shown in FIGS. 1 to 4 and second embodiment shown in FIG. 5).
Setting tool of filler and lining concrete in such a tunnel waterproofing construction method to the first aspect of the present invention in (corresponding to the first embodiment form status), the tunnel (1) lower surface sprayed with the primary lining concrete (2) of Along the lower surface, an arch-shaped formwork (4) wrapped with a waterproof sheet (5) is arranged from both sides in the width direction (Y) of the bottom (1a) of the tunnel (1) from the ceiling (1b). The filler placing device (3A) for supplying the filler (14) to the filling chamber (6) provided between the lower surface of the primary lining concrete (2) and the upper surface of the waterproof sheet (5); An arch-shaped form (4) is disposed along the bottom surface (1a) of the tunnel (1) from both sides in the width direction (Y) to the ceiling (1b) along the lower surface of the waterproof sheet (5). A placement chamber (1) provided between the lower surface of (5) and the upper surface of the formwork (4). ) To and includes lining concreting device and (3B) for supplying secondary lining concrete. A plurality of divisions arranged side by side in the circumferential direction of the tunnel (1) so that the formwork (4) of the filler placement device (3A) and the formwork (4) of the lining concrete placement device (3B) can be used together Of the frames (7, 8, 9, 10), the end of the bottom first divided frame (7) close to both sides in the width direction (Y) of the bottom (1a) of the tunnel (1), and the first A first connecting portion (11) between the second divided frame (8) from the bottom disposed above the divided frame (7) and an end of the second divided frame (8) And at least the second connecting portion (12) between the second divided frame (8) and the end of the third divided frame (9) from the bottom arranged third above the second divided frame (8). At the two connecting portions (12), the width of the tunnel (1) is adjusted so that the distance between the second divided frames (8) on both sides in the width direction (Y) can be changed and held. Can rotate in direction (Y) It was supporting. At least the second connecting portion (12) is provided as a formwork (4) of the filling material placing device (3A) and as a formwork (4) of the lining concrete placing device (3B). At least the second connecting portion (12) is provided with the filler placing device (3A) so that the rotation center lines (19a and 22a) of the divided frames (8, 9) can be shifted from each other. A shaft support (16) having a rotation center line (19a) of the divided frames (8, 9) and a lining concrete placing device (3B) so as to be used when arranged as a mold (4) In order to be used as a form frame (4), a shaft support portion (17) having a rotation center line (22a) of the divided frames (8, 9) is provided.

In the invention of claim 1, when the arch-shaped formwork (4) is used as the filling material placing apparatus (3A) and when used as the lining concrete placing apparatus (3B), the formwork (4) Since the installation height changes and the distance between the divided frames (8, 9) on both sides in the width direction (Y) also changes, the end of the second divided frame (8) with respect to the end of the third divided frame (9) If the part is supported so as to be rotatable in the width direction (Y) of the tunnel (1), the interval is adjusted and the formwork (4) of the filler placing device (3A) and the lining concrete placing device (3B) ) Formwork (4). Further, by shifting the rotation center lines (19a and 22a) of the dividing frames (8, 9) at the second connecting part (12), the filler placing device (3A) and the lining concrete placing device (3B) ) And the mold (4) can be set in an appropriate arch shape. Furthermore, by providing the shaft support portions (16, 17) separately in the filler placement device (3A) and the lining concrete placement device (3B), the second connecting portion (12) has a dividing frame (8, 9) The setting of shifting the rotation center lines (19a and 22a) from each other can be easily performed.

The invention of claim 2 that assumes the invention of claim 1 in (corresponding to the first embodiment), at least the second connection portion the both shaft support (12) (16, 17) is the support hole (19, 22) Support pins (20, 24) that can support the support pins (20, 24) in one of the shaft support portions (16, 17). ) Function as a rotation center line (19a, 22a). According to the second aspect of the present invention, the support pins (20, 24) are inserted into the support holes (19, 22) in one of the shaft support portions (16, 17) of the shaft support portions (16, 17) of the second connecting portion (12). It is used as a shaft support part (16) when used as a mold frame (4) of the filler placing device (3A) and as a mold frame (4) of the lining concrete placing device (3B). It can be properly used for the shaft support (17).

In the invention of claim 3 that assumes the invention of claim 1 or claim 2 (corresponding to the first embodiment form state), the shaft support (16, 1 7) in the locking pin of at least the second connection portion (12) (2 5) can support the locking hole (2 3). In invention of Claim 3 , it supports by the case where it uses as a formwork (4) of a lining concrete placement apparatus (3B) when it uses as a formwork (4) of a filler placement apparatus (3A) When the support pins (20, 24 ) are re-supported with respect to the holes (19, 22 ) , the second divided frame (8) is separated from the third divided frame (9) by the retaining pins ( 25) . Can be blocked.

  Since this invention can combine the mold (4) used at the time of the operation | work which supplies a filler (14), and the mold (4) used at the time of the operation | work which supplies secondary lining concrete, work efficiency is improved. Improvements and reductions in equipment costs can be measured.

(A) is the cross-sectional view which looked at the state before pouring of the filler with respect to primary lining concrete in the filler casting apparatus of the tunnel waterproofing method concerning 1st embodiment of the postscript from the front side, (b) FIG. 5 is a transverse cross-sectional view of the state after the placement of the filler and before the placement of the secondary lining concrete in the tunnel waterproof construction method, as viewed from the front side. FIG. 2 is a partial cross-sectional view showing a change in form of the mold shown in FIG. 1A and the mold shown in FIG. (A) is a partial expanded side view which shows a 2nd connection part among the connection parts between the edge parts of each division | segmentation frame in the mold shown in FIG. 1 (a), (b) is filling in the 2nd connection part. It is the partial expanded front view which shows the axial support part utilized for the formwork of a material placement apparatus, (c) is the partial expanded front view which shows the axial support part utilized for the formwork of a lining concrete placement apparatus in the 2nd connection part. It is a figure, (d) is the elements on larger scale which show the intermediate state of the axial support part of (c) in the 2nd connection part. (A) is a partial expanded side view which shows a 2nd connection part among the connection parts between the edge parts of each division | segmentation frame in the mold shown in FIG.1 (b), (b) is covered in the 2nd connection part. It is a partial expanded front view which shows the axial support part utilized for the formwork of a craft concrete placement apparatus, (c) is the partial expansion front which shows the axial support part utilized for the formwork of a filler placement apparatus in the 2nd connection part. It is a figure, (d) is the elements on larger scale which show the intermediate state of the axial support part of (b) in the 2nd connection part. (A) is a partial expanded side view which shows a 2nd connection part among the connection parts between the edge parts of each division | segmentation frame in 2nd embodiment mentioned later, (b) is a filler placement in the 2nd connection part. It is the partial expanded front view which shows the axial support part utilized for the formwork of an apparatus, (c) is the partial expanded front view which shows the intermediate state of the axial support part of (b) in the 2nd connection part, (d) is It is a partial expanded front view which shows the axial support part utilized for the formwork of the lining concrete placement apparatus in the 2nd connection part, (e) shows the intermediate state of the axial support part of (d) in the 2nd connection part. It is a partial enlarged front view.

First, a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1A, primary lining concrete 2 is sprayed on the lower surface of the tunnel 1, and a filler placing device 3 </ b> A is installed along the lower surface of the primary lining concrete 2. In the filler casting apparatus 3A, the arch-shaped form 4 is disposed from both sides in the width direction Y of the bottom 1a of the tunnel 1 to the ceiling 1b, and a waterproof sheet 5 is primary lining on the upper surface of the form 4 A filling chamber 6 is provided between the lower surface of the primary lining concrete 2 and the upper surface of the waterproof sheet 5. In the arch-shaped mold 4, a plurality of divided frames 7, 8, 9, and 10 are arranged along the lower surface of the primary lining concrete 2 in the circumferential direction of the tunnel 1 and are adjacent to each other in the circumferential direction. It is connected with each connection part (the 1st connection part 11, the 2nd connection part 12, and the 3rd connection part 13) between the edge parts of the division frames 7,8 or 8,9 or 9,10 of the upper and lower sides. The first connecting portion 11 is the second end from the lower end disposed above the first divided frame 7 and the end of the lowermost first divided frame 7 near both sides in the width direction Y of the bottom 1 a of the tunnel 1. The second divided frame 8 is connected to the end of the second divided frame 8 so as to be rotatable along the width direction Y. The second connecting portion 12 has an end portion of the second divided frame 8 and an end portion of the third divided frame 9 from the bottom disposed above the second divided frame 8 in the width direction Y. It is connected so that it can rotate along. The third connecting portion 13 includes an end portion of the third divided frame 9, and an end portion of the uppermost fourth divided frame 10 disposed above the third divided frame 9 and close to the ceiling portion 1 b of the tunnel 1. Are coupled so as to be rotatable along the width direction Y.

  In the filler placement device 3A shown in FIG. 1A, after the filler 14 is supplied to the filling chamber 6 as shown in FIG. 1B, a part of the filler placement device 3A is changed. As shown in FIG. 1B, a lining concrete placing device 3B is installed. In the lining concrete placing apparatus 3B, the arch-shaped form 4 is also used as the form 4 of the filler placing apparatus 3A, and the width direction Y of the bottom 1a of the tunnel 1 along the lower surface of the waterproof sheet 5 is used. The placement chamber 15 is provided between the lower surface of the waterproof sheet 5 and the upper surface of the mold 4. Thereafter, although not shown, secondary lining concrete is supplied to the placing chamber 15.

  In the filler placement device 3A shown in FIG. 1 (a) and the lining concrete placement device 3B shown in FIG. 1 (b), the height difference G of the mold 4 is generated. When the mold frame 4 is lowered by the height difference G, the spacing between the divided frames 7, 8, 9 on both sides in the width direction Y in the mold frame 4 of the filler casting apparatus 3A shown by the imaginary line in FIG. In the formwork 4 of the lining concrete placing apparatus 3B indicated by the solid line 2, the space is wider than the interval between the divided frames 7, 8, 9 on both sides in the width direction Y. Conversely, when the formwork 4 of the lining concrete placing apparatus 3B is raised by the height difference G, the both sides of the width direction Y in the formwork 4 of the lining concrete placing apparatus 3B shown by the solid line in FIG. The space between the divided frames 7, 8, 9 is narrower than the space between the divided frames 7, 8, 9 on both sides in the width direction Y in the mold 4 of the filler casting apparatus 3 </ b> A shown by the imaginary line in FIG. 2. It becomes. Therefore, when the formwork 4 of the filler placement apparatus 3A is used as the formwork 4 of the lining concrete placement apparatus 3B, the formwork 4 of the filler placement apparatus 3A is lowered by the height difference G. However, even when the formwork 4 of the lining concrete placing device 3B is raised by the height difference G, the interval between the divided frames 7, 8, 9 on both sides in the width direction Y of the formwork 4 is adjusted. Further, it is necessary to set the mold 4 in an appropriate form so that the filling chamber 6 and the placement chamber 15 have a substantially uniform radial width in the circumferential direction.

  Therefore, both the first connecting portion 11 and the third connecting portion 13 have a common rotation center line between the mold 4 of the filler placing device 3A and the mold 4 of the lining concrete placing device 3B. However, in the second connecting portion 12, as shown in FIGS. 3A and 4A, the pair of shaft support portions 16 and 17 are adjacent to each other on both sides in the longitudinal direction X of the tunnel 1. Is provided. Of the pair of shaft support portions 16, 17, one shaft support portion 16 is used in the mold 4 of the filler placing device 3A, and the other shaft support portion 17 is used in the mold 4 of the lining concrete placing device 3B. The

  In the shaft support portion 16, as shown in FIGS. 3B and 4C, a circular support hole 19 is provided in the coupling plate 18 that meshes with each other, and a circular support pin 20 is provided to the support hole 19. Can be inserted and removed. In the shaft support portion 17, as shown in FIGS. 3 (c), (d) and FIGS. 4 (b), (d), a circular support hole 22 and a circular stop hole 23 are provided in the connecting plate 21 that meshes with each other. Thus, the circular support pin 24 can be inserted into and removed from the support hole 22, and the circular stop pin 25 can be inserted into and removed from the stop hole 23. In the shaft support portion 16, the rotation center line 19 a of the support hole 19 and the rotation center line 20 a of the support pin 20 coincide with each other, and in the shaft support portion 17, the rotation center line 22 a of the support hole 22 and the rotation center of the support pin 24. The lines 24a coincide with each other, and the rotation center lines 19a, 20a and the rotation center lines 22a, 24a are shifted from each other.

Next, the combined procedure of the mold 4 between the filler placing device 3A and the lining concrete placing device 3B will be described.
When used as the mold 4 of the filler casting apparatus 3A as shown in FIG. 1 (a), a support hole is provided in the shaft support portion 16 of the second connecting portion 12 as shown in FIGS. 3 (a) and 3 (b). A support pin 20 is inserted into 19 and the support hole 22 and the stop hole 23 are not inserted in the shaft support portion 17 of the second connecting portion 12 as shown in FIGS. Accordingly, the shaft support portion 16 functions as a rotation center line 19a, 20a between the second divided frame 8 and the third divided frame 9. In addition, both the 1st connection part 11 and the 3rd connection part 13 are shared by the formwork 4 of 3 A of filler placement apparatuses, and the formwork 4 of the lining concrete placement apparatus 3B. In the filling material placing apparatus 3A, the mold 4 is set in an appropriate arch shape by holding a plurality of locations of the mold 4 so that the filling chamber 6 has a substantially uniform radial width in the circumferential direction.

  Next, when using as the formwork 4 of the lining concrete placement apparatus 3B as shown in FIG.1 (b) from the formwork 4 of the filler placement apparatus 3A shown in FIG. After the stop pin 25 is inserted into the stop hole 23 in the shaft support portion 17 of the second connecting portion 12 as shown in FIG. 4 (a) and 4 (c), the support pin 20 is detached from the support hole 19 in the shaft support portion 16 of the second connecting portion 12. Then, as shown in FIGS. 4A and 4B, after the support pin 24 is inserted into the support hole 22 in the shaft support portion 17 of the second connecting portion 12, as shown in FIG. The retaining pin 25 shown in d) is detached from the retaining hole 23. Therefore, the shaft support portion 17 functions as the rotation center lines 22 a and 24 a between the second divided frame 8 and the third divided frame 9. In the lining concrete placing apparatus 3B, a part of the filler placing apparatus 3A is changed, and the mold 4 is lowered by the height difference G as shown in FIG. The mold 4 is set to an appropriate arch shape by holding a plurality of locations of the mold 4 so that the casting chamber 15 has a substantially uniform radial width in the circumferential direction.

  On the contrary, when it is used as the mold 4 of the filler casting apparatus 3A as shown in FIG. 1 (a) from the mold 4 of the lining concrete placing apparatus 3B shown in FIG. 1 (b), After the stop pin 25 is inserted in the stop hole 23 in the shaft support portion 17 of the second connecting portion 12 as shown in FIG. 3A and 3D, the support pin 24 is detached from the support hole 22 in the shaft support portion 17 of the second connecting portion 12. Then, as shown in FIGS. 3A and 3B, after the support pin 20 is inserted into the support hole 19 in the shaft support portion 16 of the second connecting portion 12, as shown in FIG. The retaining pin 25 shown in d) is detached from the retaining hole 23. Accordingly, the shaft support portion 16 functions as a rotation center line 19a, 20a between the second divided frame 8 and the third divided frame 9. In the filler placement device 3A, a part of the lining concrete placement device 3B is changed, and the mold 4 is raised by a height difference G as shown in FIG. The mold 4 is set in an appropriate arch shape by holding a plurality of locations of the mold 4 so that the filling chamber 6 has a substantially uniform radial width in the circumferential direction.

Next, the second embodiment shown in FIG. 5 will be described focusing on the differences from the first embodiment.
In the second connecting portion 12, as shown in FIG. 5A, one shaft support portion 28 is provided on each side in the longitudinal direction X of the tunnel 1. The shaft support portion 28 is used not only in the mold 4 of the filler placing apparatus 3A but also in the mold 4 of the lining concrete placing apparatus 3B. In the shaft support 28, as shown in FIGS. 5B and 5D, a support hole 30 and a stop hole 31 are provided in a coupling plate 29 that meshes with each other, and a support pin 32 is inserted into and removed from the support hole 30. The stop pin 33 can be inserted into and removed from the stop hole 31. In the shaft support portion 28, the support hole 30 has a long hole shape, and a circular support pin 32 is loosely fitted in the support hole 30, so that the divided frames 8, 9 are within the range of the clearance of the support pin 32 with respect to the support hole 30. The rotation center line 32a can be shifted from each other. Accordingly, the support pin 32 moves within the range of the support hole 30 even when the shaft support portion 28 is used as the mold 4 of the filler placing device 3A and the mold 4 of the lining concrete placing device 3B. Thus, it functions as a rotation center line 32 a between the second divided frame 8 and the third divided frame 9.

  As shown in FIGS. 5C and 5E, when the circular stopper pin 33 is inserted into the circular stopper hole 31, the support pin 32 is loosely fitted into the support hole 30 to change the support pin 32. Even if the second divided frame 8 is detached, the second divided frame 8 can be prevented from being separated from the third divided frame 9.

  Although not shown, a circular support hole 30 is provided instead of the long support hole 30, and the outer diameter of the support pin 32 is changed with respect to the inner diameter of the support hole 30 so that the support pin 32 is loosely fitted into the support hole 30. The rotation center lines 32a of the divided frames 8 and 9 can be shifted from each other within the range of the gap.

This embodiment has the following effects.
(1) In the case where the arch-shaped form 4 is used as the filling material placing apparatus 3A and the case where it is used as the lining concrete placing apparatus 3B, the installation height of the form 4 is changed and the width direction of the tunnel 1 is changed. Since the spacing between the divided frames 7, 8, 9 on both sides of Y also changes, the end of the second divided frame 8 is connected to the end of the third divided frame 9 in the second connecting portion 12 in the width direction Y of the tunnel 1. By being supported so as to be pivotable, it is possible to use the mold 4 of the filler placing device 3A and the mold 4 of the lining concrete placing device 3B by adjusting the interval. Therefore, it is possible to improve work efficiency and reduce equipment costs.

  (2) By separately providing the pivot support portions 16 and 17 in the filler placing device 3A and the lining concrete placing device 3B, the second connecting portion 12 and the third divided frame 9 and It is possible to easily set the rotation center lines 19a and 22a between each other.

  (3) By supporting the support pins 20, 24 in the support holes 19, 22 in one of the shaft support parts 16, 17 of the two shaft support parts 16, 17 of the second connecting part 12, the mold of the filler placing device 3 A It can be used separately for the shaft support 16 when used as the frame 4 and the shaft support 17 when used as the mold 4 of the lining concrete placing apparatus 3B.

  (4) By providing the shaft support portion 28 in which the support pin 32 can be loosely fitted to the support hole 30 in the second connecting portion 12, it is arranged as the formwork 4 of the filler placing device 3 </ b> A, and the lining concrete The rotation center line 32a between the second divided frame 8 and the third divided frame 9 can be shifted with respect to the case where it is arranged as the mold 4 of the placing device 3B.

  (5) When used as the mold 4 of the filler placing apparatus 3A and when used as the mold 4 of the lining concrete placing apparatus 3B, the support pins 20, When reinserting 24 and 32, separation of the second divided frame 8 from the third divided frame 9 can be prevented by the retaining pins 25 and 33 inserted into the retaining holes 23 and 31.

For example, the following embodiment may be configured as follows.
The first connecting part 11 and the third connecting part 13 are also provided with a pair of shaft support parts 16 and 17 in the same manner as the second connecting part 12.

-The stop hole 23 and the stop pin 25 of the shaft support part 17 are omitted, and the stop hole and the stop pin are provided in the shaft support part 16.
The shaft support 16 is provided with a stop hole and a stop pin in the same manner as the shaft support 17.

  -The retaining hole 23 and the retaining pin 25 of the shaft support portion 17 are omitted, and the shaft support portion 16 and the shaft support portion 17 are changed to the same structure.

  DESCRIPTION OF SYMBOLS 1 ... Tunnel, 1a ... Bottom part of tunnel, 1b ... Tunnel ceiling part, 2 ... Primary lining concrete, 3A ... Filler placing device, 3B ... Covering concrete placing device, 4 ... Formwork, 5 ... Waterproof sheet , 6 ... filling chamber, 7 ... first divided frame, 8 ... second divided frame, 9 ... third divided frame, 10 ... fourth divided frame, 11 ... first connecting portion, 12 ... second connecting portion, 13 ... 3rd connection part, 14 ... filler, 15 ... casting chamber, 16 ... shaft support part, 17 ... shaft support part, 19 ... support hole, 19a ... rotation center line, 20 ... support pin, 20a ... rotation center line, 22 ... support hole, 22a ... rotation center line, 23 ... stop hole, 24 ... support pin, 24a ... rotation center line, 25 ... stop pin, 28 ... shaft support, 30 ... support hole, 31 ... stop hole, 32 ... support pin, 32a ... rotation center line, 33 ... stop pin, Y ... width direction of the tunnel.

Claims (3)

Along the lower surface of the primary lining concrete sprayed on the lower surface of the tunnel, an arch-shaped form wrapped with a waterproof sheet is arranged from both sides in the width direction of the bottom of the tunnel to the ceiling, and the lower surface of the primary lining concrete And a filling material placing device for supplying the filling material to a filling chamber provided between the top surface of the waterproof sheet,
An arch-shaped formwork is disposed along the bottom surface of the waterproof sheet from the widthwise sides of the bottom of the tunnel to the ceiling, and is placed in a placement chamber provided between the bottom surface of the waterproof sheet and the top surface of the formwork. In the placement device in the tunnel waterproofing method provided with the lining concrete placement device for supplying the next lining concrete,
In a plurality of divided frames arranged in the circumferential direction of the tunnel in order to serve as both the mold for the filler casting device and the mold for the lining concrete casting device, the bottom of the tunnel near the bottom in the width direction A first connecting portion between an end of the first divided frame and an end of the second divided frame second from the bottom disposed above the first divided frame; and an end of the second divided frame Part and the second connecting part between the end of the third third dividing frame from the bottom arranged above the second dividing frame, at least at the second connecting part, on both sides in the width direction In order to change and hold the interval between the second divided frames, the second divided frame is supported so as to be rotatable in the width direction of the tunnel with respect to the third divided frame ,
At least in the second connecting portion, the rotation center line of the divided frame is shifted from each other between the case where it is arranged as a mold of the filler placing device and the case of the lining concrete placing device. So that you can
At least the second connecting portion is used as a mold for a filler placing device, and is used as a mold for a lining concrete placing device. A device for placing a filler and lining concrete in a tunnel waterproofing method, characterized in that each has a shaft support portion having a rotation center line of a dividing frame so as to be used when disposed. . At least both shaft support portions of the second connecting portion have a support pin that can be supported with respect to the support hole, and function as a rotation center line in a state where the support pin is supported by the support hole in one of the shaft support portions. The filling material and the lining concrete placement apparatus in the tunnel waterproofing method according to claim 1 . The apparatus for placing a filler and lining concrete in a tunnel waterproofing method according to claim 1 or 2 , wherein at least the shaft support portion of the second connecting portion can support the stop pin in the stop hole.