JP7624910B2 - How to set up shoring - Google Patents

Description

The present invention relates to a method for installing supports on an earth retaining wall.

Patent Document 1 discloses that two tiers of wales, one above the other, are installed on the retaining wall, and that fixing members are installed between these wales.

JP 2001-003364 A

Generally, lifting equipment such as cranes are used to install support structures such as the aforementioned wales. However, in construction locations with low headroom (in other words, construction locations with headroom restrictions), it can be difficult to use lifting equipment such as cranes to install support structures.

In view of these circumstances, the present invention aims to provide a method for installing supports that can be applied to low-height construction sites.

Therefore, one aspect of the present invention is a method for installing supports on an earth retaining wall using a cart equipped with a horizontally rotatable turntable and capable of running on a flooring surface, comprising:
The support structure includes a wale support,
The method comprises:
A first step of running the cart to the vicinity of the earth retaining wall with the wale placed on the turntable;
A second step of changing the direction of the wale by horizontally rotating the turntable near the retaining wall;
A third step of connecting one end of a rail member to a bracket provided on the retaining wall;
a fourth step of sliding the rib whose orientation has been changed on the rail member toward one end side of the rail member and placing it on the bracket;
The present invention is characterized by comprising:

According to the present invention, even in low-height construction locations, shoring installation work can be carried out smoothly.

FIG. 1 is a diagram showing a bracket provided on an earth retaining wall in a first embodiment of the present invention. FIG. 1 shows two upper and lower wales installed in the first embodiment. FIG. 1 shows an installed sub-member in the first embodiment. FIG. 13 is a diagram showing a method of installing the ribs in the first embodiment. FIG. 13 is a diagram showing a method of installing the ribs in the first embodiment. FIG. 13 is a diagram showing a method of installing the ribs in the first embodiment. FIG. 13 is a diagram showing a method of installing the ribs in the first embodiment. FIG. 13 is a diagram showing a method of installing the ribs in the first embodiment. FIG. 13 is a diagram showing a method of installing the ribs in the first embodiment. FIG. 13 is a diagram showing a traveling state of a cart with a rib placed on a turntable in the first embodiment; FIG. 1 is a diagram showing a horizontally rotated turntable and a rib in the first embodiment. FIG. 10 is a diagram for explaining a sliding method of the ribs in the first embodiment. FIG. 13 is a diagram showing a method for erecting a sub-member in the first embodiment. FIG. 13 is a diagram showing a cart according to a second embodiment of the present invention; FIG. 13 is a diagram showing a cart according to a third embodiment of the present invention;

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Figures 1A to 1C show a method of installing shoring 30 (including wale (main members) 31, 32 and secondary member 33) in a first embodiment of the present invention. Figures 2 to 7 show a method of installing wale 32 in this embodiment. Here, Figures 1A to 1C correspond to the A-A cross section in Figure 2. However, Figures 1A to 1C omit illustration of cross sheet piles 3, rails 15, bogie 20, etc. shown in Figure 2. Also, Figures 2 to 7 omit illustration of tracks 10L, 10R and construction girders 11L, 11R shown in Figures 1A to 1C, and instead show a center line 10LC of track 10L and a center line 10RC of track 10R.

In this embodiment, the earth retaining wall 1 is a parent pile cross-sheet pile wall, and is composed of multiple parent piles 2 and multiple cross-sheet piles 3. However, the configuration of the earth retaining wall 1 is not limited to this. For example, the earth retaining wall 1 may be a sheet pile wall or a column wall.

When viewed from above, the retaining wall 1 extends alongside the railway tracks 10L, 10R. The construction girders 11L, 11R support the tracks 10L, 10R. Each of the construction girders 11L, 11R is supported by a number of pinion girders 12, and each pinion girder 12 is supported by a parent pile 2.

In this embodiment, the flooring surface 13 is excavated and formed with a gap directly below the construction girders 11L, 11R. The flooring surface 13 is formed in the first excavation, and the distance L between the lower end of the construction girders 11L, 11R and the flooring surface 13 is in the range of 500 mm to 3000 mm, and can be in the range of 1000 mm to 2000 mm, for example. In this way, the support 30 (mainly the upper and lower two-stage wales 31, 32 and the secondary member 33 in this embodiment) is installed in the low-head construction location (construction space P) above the flooring surface 13, where the air space is restricted by the construction girders 11L, 11R.

In the method of installing the shoring 30 in this embodiment, first, as shown in Figure 1A, brackets 5 are attached to the parent piles 2 of the retaining wall 1. The brackets 5 are configured so that they can support each of the upper and lower two tiers of ribs 31, 32 from below. Note that Figures 1A to 1C show the brackets 5 supporting the lower tier of ribs 32 from below.

Next, as shown in FIG. 1B, the lower rib 32 is installed on the bracket 5, and similarly, the upper rib 31 is installed above the lower rib 32. The method of installing the lower rib 32 will be described later with reference to FIG. 2 to FIG. 7.

Next, as shown in Figure 1C, the secondary member 33 is installed. The secondary member 33 corresponds to the "support member" of the present invention, and abuts against the wales 31, 32. The secondary member 33 is also arranged across the wales 31, 32, and is interposed between the wales 31, 32 and the struts (not shown). The method of erecting the secondary member 33 will be described later with reference to Figure 11.

Here, the parent pile 2 is formed of an H-shaped steel material extending in the vertical direction. The bracket 5 is attached to the flange surface (the surface facing the construction space P) of the parent pile 2. The ribs 31, 32 are each formed of an H-shaped steel material extending approximately horizontally along the inner surface (the surface facing the construction space P) of the retaining wall 1. A backfill material 34 is interposed between the flange surface of the parent pile 2 of the retaining wall 1 and the flange surfaces of the ribs 31, 32.

The secondary member 33 (see FIG. 11 described later) is made by arranging two H-shaped steel members extending in the vertical direction in parallel and joining adjacent flanges together to form an integrated unit. The secondary member 33 is provided with multiple reinforcing plates 33a. A through hole (not shown) is formed in the upper part of the secondary member 33 to pass the wire 40 through.

The belly rises 31, 32 can be transported to the area Q (see FIG. 2) on the opposite side of the flooring surface 13 from the earth retaining wall 1 (the area under the road outside the tracks 10L, 10R when viewed from above). These transported belly rises 31, 32 are placed on a cart 20 and transported to the vicinity of the earth retaining wall 1. This transport route includes the girders 12 and intermediate piles 14, making it difficult to transport long objects such as the belly rises 31, 32 in the direction in which they are to be erected (along the direction of the earth retaining wall 1). Therefore, in this embodiment, for example, the method of installing the belly rises 32 shown in FIG. 2 to FIG. 7 is used.

In the method of installing the ribs 32, first, as shown in Figures 2 and 3, the ribs 32 are transported from the aforementioned area Q to the vicinity of the retaining wall 1 using a cart 20.

Here, the configuration of the carriage 20 will be described with reference to FIG. 8 in addition to FIG. 2 and FIG.
FIG. 8 shows a traveling state of the carriage 20 with the ribs 32 placed on the turntable 22.

The trolley 20 comprises a trolley body 21 that runs on the floor mounting surface 13, and a turntable (rotating table) 22 provided on the upper part of the trolley body 21. The turntable 22 is attached to the upper part of the trolley body 21 via a support shaft 23 so that it can rotate horizontally relative to the trolley body 21. A belly riser 32 is placed on the turntable 22. The belly riser 32 is fastened to the turntable 22 by, for example, a fastening means 24.

The running wheels 25 of the bogie body 21 roll on the rails 15 laid on the flooring surface 13. The rails 15 are made of, for example, channel steel with an open-topped U-shaped cross section, and by fitting the lower part of the running wheels 25 into this groove shape, the bogie 20 (bogie body 21) can run on the flooring surface 13 along the rails 15. Here, the bogie 20 (bogie body 21) runs on the rails 15 laid on the flooring surface 13, so good running performance of the bogie 20 can be ensured even if the flooring surface 13 is uneven.

The rails 15 extend substantially horizontally on the flooring surface 13 from the aforementioned area Q to the vicinity of the earth retaining wall 1. Therefore, the trolley 20 (truck body 21) can travel on the flooring surface 13 along the rails 15 from the aforementioned area Q to the vicinity of the earth retaining wall 1.

When viewed from above, the rails 15 extend in a direction intersecting the extension direction of the earth retaining wall 1. Therefore, in this embodiment, the trolley 20 (cart body 21) can travel on the floor attachment surface 13 in a direction intersecting the extension direction of the earth retaining wall 1 from the aforementioned area Q to the vicinity of the earth retaining wall 1.

Here, in this embodiment, the rails 15 extend in a direction perpendicular to the extension direction of the earth retaining wall 1 when viewed from above. Therefore, in this embodiment, the cart 20 (cart body 21) can travel on the floor attachment surface 13 in a direction perpendicular to the extension direction of the earth retaining wall 1 from the aforementioned area Q to the vicinity of the earth retaining wall 1.

2 and 3 correspond to the "first step" of the present invention, in which the trolley 20 is driven to the vicinity of the retaining wall 1 with the ribs 32 placed on the turntable 22. In this step, the ribs 32 on the turntable 22 extend in the direction along which the trolley 20 travels (in other words, approximately parallel to the extension direction of the rail 15) when viewed from above. In this step, the ribs 32 on the turntable 22 extend approximately parallel to the girders 12 when viewed from above.

Next, as shown in Figures 3 and 4, the turntable 22 is rotated horizontally near the retaining wall 1 to change the orientation of the ribs 32. The process shown in Figures 3 and 4 corresponds to the "second process" of the present invention. Here, Figure 9 shows the turntable 22 and ribs 32 that have been rotated horizontally. Note that it is desirable to provide wheel stops 26 for the running wheels 25 of the cart 20 (cart body 21) prior to the horizontal rotation of the turntable 22.

This horizontal rotation by the turntable 22 is performed so that the ribs 32 are oriented in the direction in which they are to be erected (along the retaining wall 1). Therefore, for example, if the direction of the ribs 32 that have been placed on the turntable 22 of the cart 20 and transported to the vicinity of the retaining wall 1 is perpendicular to the extension direction of the retaining wall 1 when viewed from above, the turntable 22 is rotated approximately 90° relative to the cart body 21 when viewed from above during this horizontal rotation process.

Next, as shown in Figure 5, one end 28a of the rail member 28 is connected to the bracket 5 provided on the retaining wall 1. For this connection, clamping means such as Bullman (registered trademark) or fastening means such as bolts may be used. This step shown in Figure 5 corresponds to the "third step" of the present invention. The rail member 28 is, for example, an angle iron.

The other end 28b of the rail member 28 may be placed on the floor mounting surface 13 near the cart 20, as shown in FIG. 10 described later, or may be placed on the cart 20. In either case, it is preferable that the pair of rail members 28 are arranged so as to sandwich at least a portion of the cart 20 (e.g., the turntable 22) from both sides when viewed from above.

Next, as shown in Figures 5 to 7, the belly 32, whose orientation has been changed in the above-mentioned horizontal rotation process, is slid on the rail member 28 from the other end side 28b to the one end side 28a of the rail member 28, and placed on the bracket 5. This process corresponds to the "fourth process" of the present invention. In this process, for example, the sliding method of the belly 32 shown in Figure 10 is used.

In the example shown in Figure 10, a bracket 37 is provided above the bracket 5 on the flange surface (the surface facing the construction space P) of the parent pile 2 of the retaining wall 1, and a chain block, for example, is attached to this bracket 37 to pull the rib 32 via a wire 38. In this way, the rib 32 on the turntable 22 can be placed on the bracket 5 by sliding it along the rail member 28 and pulling it toward the bracket 5 using a traction means such as a chain block. Here, in Figure 10, the placement position (installation position) of the rib 32 on the bracket 5 is shown by a dashed line.

In this embodiment, the aforementioned "third step" (the step of connecting one end side 28a of the rail member 28 to the bracket 5) can be performed at any time before the aforementioned "fourth step". In other words, the aforementioned "third step" is not limited to being performed after the aforementioned "second step", but may be performed prior to the aforementioned "second step", or may be performed prior to the aforementioned "first step".

In this way, the lower rib 32 is installed on the earth retaining wall 1. It goes without saying that the upper rib 31 can also be installed on the earth retaining wall 1 using the same method as the rib 32.

Next, the method of installing the secondary member 33 will be explained using FIG. 11. FIG. 11 shows how to erect the secondary member 33.

A secondary member 33 can be brought into the area Q on the opposite side of the flooring surface 13 from the earth retaining wall 1 (the area under the road outside the tracks 10L, 10R when viewed from above). The brought-in secondary member 33 is placed on a cart 20 in a laid-down state (stable state) and transported to the vicinity of the earth retaining wall 1. When erecting the secondary member 33 that has been transported to the vicinity of the earth retaining wall 1 in a laid-down state, it is difficult to use a lifting device such as a crane for the erection because there is a construction girder 11L directly above it. Therefore, in this embodiment, for example, a method of erecting the secondary member 33 shown in FIG. 11 is used.

In the method of installing the sub-member 33, first, the sub-member 33 is placed on the cart 20 in a laid-down state (stable state), and the cart 20 is driven from the aforementioned area Q to the vicinity of the retaining wall 1. This step corresponds to the "fifth step" of the present invention.

Next, the sub-member 33, which has been transported to the vicinity of the retaining wall 1 and is laid down, is removed from the cart 20 and erected. This step corresponds to the "sixth step" of the present invention. Here, removing the sub-member 33 from the cart 20 may include unloading the sub-member 33 from the cart 20 onto the flooring surface 13 and/or transferring the sub-member 33 from the cart 20 to the rail member 28 described above. This step is also a step of erecting the sub-member 33, which has been transported to the vicinity of the retaining wall 1, and corresponds to the "erecting step" of the present invention.

In this "erecting process," as shown in Figures 11 (a) to (c), the secondary member 33 is gradually erected by pulling both sides of the wire 40 passed through the through hole of the secondary member 33.

In the example shown in Figures 11 (A) to (C), a pair of brackets 41 are provided on the flange surface (the surface facing the construction space P) of the upper rib 31, and a lever block (registered trademark) 42, for example, is attached to each bracket 41 so that the wire 40 passed through the through hole of the secondary member 33 is pulled up from both sides. In this way, the secondary member 33 can be easily erected by pulling the wire 40 passed through the through hole of the secondary member 33 from both sides using a pulling means such as the lever block (registered trademark) 42. When erecting the secondary member 33, the secondary member 33 may slide on the rail member 28 described above.

In this way, the sub-member 33 extending in the vertical direction is installed so as to straddle the upper and lower two tiers of the ribs 31, 32.

According to this embodiment, a method of installing a support 30 on an earth retaining wall 1 using a cart 20 equipped with a horizontally rotatable turntable 22 and capable of running on a floor mounting surface 13, the support 30 including ribs 31, 32, and the method of installing the support 30 on an earth retaining wall 1 includes a first step (see Figures 2, 3, and 8) of running the cart 20 to the vicinity of the earth retaining wall 1 with the ribs 31, 32 placed on the turntable 22, and a second step (see Figures 2, 3, and 8) of running the cart 20 to the vicinity of the earth retaining wall 1 with the turntable 22 near the earth retaining wall 1. The method includes a second step (see Figs. 3, 4, and 9) of changing the orientation of the ribs 31 and 32 by rotating them horizontally, a third step (see Figs. 5 and 10) of connecting one end 28a of the rail member 28 to a bracket 5 provided on the retaining wall 1, and a fourth step (see Figs. 5 to 7, and 10) of sliding the ribs 31 and 32, whose orientation has been changed in the second step, on the rail member 28 toward one end 28a of the rail member 28 and placing them on the bracket 5. This allows the installation work of the ribs 31 and 32 to proceed smoothly even in a low-height and narrow construction location such as the construction space P described above.

According to this embodiment, in the first step (see Figs. 2, 3, and 8), the cart 20 is run in a direction intersecting the extension direction of the retaining wall 1 in a top view, and in the first step, the ribs 31, 32 on the turntable 22 extend in a direction along the travel direction of the cart 20 in a top view. Then, for example, in the first step, the cart 20 is run in a direction perpendicular to the extension direction of the retaining wall 1 in a top view, and in the second step (see Figs. 3, 4, and 9), the turntable 22 is rotated approximately 90° in a top view. In this way, the ribs 31, 32 can be efficiently transported to the vicinity of the retaining wall 1 (in other words, near the installation position of the ribs 31, 32) while avoiding obstacles such as the girders 12 and the intermediate piles 14.

According to this embodiment, the shoring 30 further includes a support member (secondary member 33) that abuts against the ribs 31, 32 placed on the bracket 5. The method of installing the shoring 30 on the earth retaining wall 1 includes a fifth step of running the cart 20 to the vicinity of the earth retaining wall 1 with the support member (secondary member 33) placed on the cart 20, and a sixth step (see FIG. 11) of lowering the support member (secondary member 33) from the cart 20 and erecting it. In the sixth step, the support member (secondary member 33) is erected by pulling both sides of the wire 40 passed through the through hole of the support member (secondary member 33). This allows the installation work of the support member (secondary member 33) to proceed smoothly even in a low-head and narrow construction location such as the construction space P described above. Furthermore, the support member (secondary member 33) can be a member interposed between the ribs 31, 32 and the struts.

According to this embodiment, the method of installing the shoring 30 on the earth retaining wall 1 includes the wales 31, 32 placed on the bracket 5 provided on the earth retaining wall 1 and the support member (sub-member 33) abutting the wales 31, 32. The method of installing the shoring 30 on the earth retaining wall 1 includes a step of erecting the support member (sub-member 33) transported to the vicinity of the earth retaining wall 1 (see FIG. 11). In this erecting step, the support member (sub-member 33) is erected by pulling both sides of the wire 40 passed through the through hole of the support member (sub-member 33). This allows the installation work of the support member (sub-member 33) to proceed smoothly even in a low-head and narrow construction location such as the construction space P described above. The support member (sub-member 33) can be a member interposed between the wales 31, 32 and the strut.

In addition, according to this embodiment, a pulling means (e.g., lever block (registered trademark) 42) for pulling the wire 40 is provided on the belly 31. Note that a pulling means (e.g., lever block (registered trademark) 42) for pulling the wire 40 may be provided on the belly 32.

Furthermore, according to this embodiment, structures (temporary structures or permanent structures) such as construction girders 11L, 11R that support the railway tracks 10L, 10R are located above the flooring surface 13, and the distance L between the lower ends of the structures such as construction girders 11L, 11R and the flooring surface 13 is within the range of 500 mm to 3000 mm. Even in such a low-headway construction location, the installation work of the ribs 31, 32 and the secondary member 33 can be smoothly carried out using the trolley 20.

Next, a second embodiment of the present invention will be described with reference to FIG.
FIG. 12 is a diagram showing a carriage 20' in this embodiment.
The points that differ from the first embodiment will be described.

In this embodiment, the trolley 20' comprises a trolley body 21' that runs on the floor mounting surface 13, a lifting device 50 provided on the upper part of the trolley body 21', and a turntable (rotating table) 22 provided on the upper part of the lifting device 50. The turntable 22 is attached to the upper part of the lifting device 50 via a support shaft 23 so that it can rotate horizontally relative to the trolley body 21' and the lifting device 50. The belly risers 31, 32 and the sub-member 33 can be placed on the turntable 22. In this regard, FIG. 12 shows an example in which the belly riser 32 is placed on the turntable 22.

The trolley body 21' includes a crawler 21a and a trolley frame 21b. The crawler 21a is disposed on the underside of the trolley frame 21b, and a lifting device 50 is attached to the upper part of the trolley frame 21b. By including the crawler 21a on the trolley body 21', good travelling performance of the trolley 20' can be ensured even if the floor mounting surface 13 is uneven.

The lifting device 50 is a device for adjusting the height of the turntable 22 relative to the cart frame 21b, and is configured to be able to raise and lower the turntable 22 relative to the cart frame 21b. The lifting device 50 is configured to have, for example, a large screw 51, and to be able to raise and lower the turntable 22 relative to the cart frame 21b by rotating the large screw 51 around its central axis. However, the configuration of the lifting device 50 is not limited to this.

In particular, according to this embodiment, the trolley 20' includes a trolley body 21' that travels on the floor mounting surface 13, and a lifting device 50 that is configured to raise and lower the turntable 22 relative to the trolley body 21'. This allows the height of the turntable 22 to be adjusted so that it is at an optimal height for efficiently installing the ribs 31, 32 and the secondary member 33 on the retaining wall 1.

It goes without saying that the lifting device 50 in this embodiment may be applied to the cart 20 in the first embodiment described above, so that the lifting device 50 can raise and lower the turntable 22 relative to the cart body 21.

Next, a third embodiment of the present invention will be described with reference to FIG.
FIG. 13 is a diagram showing a carriage 20' in this embodiment.
The differences from the second embodiment will be described.

In this embodiment, the carriage frame 21b is provided with a stand 21c for supporting the rail member 28 from below. A reaction wall 21d is erected on the carriage frame 21b, and a male thread of a long bolt 21f is screwed into a female thread 21e formed on the reaction wall 21d. A head 21g is provided at one end of the male thread of the long bolt 21f, and a pressure plate 21h is attached to the other end. By turning the head 21g of the long bolt 21f with an electric screwdriver (e.g., an impact screwdriver), the belly 32 on the turntable 22 is pressed against the rail member 28 via the pressure plate 21h, and the rail member 28 is slid and placed on the bracket 5. Here, in FIG. 13, the placement position (installation position) of the belly 32 on the bracket 5 is shown by a dashed line.

In this embodiment, it is preferable to adjust the height of each of the bracket 5, the rail member 28, and the turntable 22 so that they coincide with each other. It goes without saying that the lifting device 50 described above can be used for this height adjustment.

In addition, in this embodiment, in order to prevent the belly 32 on the turntable 22 from contacting the reaction wall 21d when it rotates horizontally in conjunction with the horizontal rotation of the turntable 22, the reaction wall 21d may be configured to be able to rise and fall, or may be detachably attached to the carriage frame 21b. This also applies to the stand 21c.

It goes without saying that the trolley body 21 in the first embodiment described above may be used in place of the trolley body 21' in this embodiment.

In the first to third embodiments described above, the trolleys 20, 20' are used to transport the ribs 31, 32 and the secondary members 33, but in addition to this, the trolleys 20, 20' may also be used to transport the struts.

It goes without saying that the illustrated embodiments are merely illustrative of the present invention, and that the present invention encompasses various modifications and variations that may be made by those skilled in the art within the scope of the claims, in addition to those directly shown in the described embodiments.
The claims as originally filed were as follows:
[Claim 1]
A method for installing supports on an earth retaining wall using a cart equipped with a horizontally rotatable turntable and capable of running on a flooring surface, comprising:
The support structure includes a wale support,
The method comprises:
A first step of running the cart to the vicinity of the earth retaining wall with the wale placed on the turntable;
A second step of changing the direction of the wale by horizontally rotating the turntable near the retaining wall;
A third step of connecting one end of a rail member to a bracket provided on the retaining wall;
a fourth step of sliding the rib whose orientation has been changed on the rail member toward one end side of the rail member and placing it on the bracket;
How to install shoring, including:
[Claim 2]
In the first step, the carriage is run in a direction intersecting an extension direction of the earth retaining wall when viewed from above,
The support installation method according to claim 1 , wherein in the first step, the wale on the turntable extends in a direction along the traveling direction of the carriage when viewed from above.
[Claim 3]
In the first step, the carriage is run in a direction perpendicular to the extension direction of the retaining wall when viewed from above,
The support installation method according to claim 2 , wherein in the second step, the turntable is rotated by approximately 90° when viewed from above.
[Claim 4]
The method for installing a support structure according to any one of claims 1 to 3, wherein the cart comprises a cart body that runs on a floor mounting surface, and a lifting device configured to raise and lower the turntable relative to the cart body.
[Claim 5]
The support further includes a support member that abuts against the wale placed on the bracket,
The method comprises:
A fifth step of running the cart to the vicinity of the earth retaining wall while the support member is placed on the cart;
A sixth step of lowering the support member from the carriage and erecting it;
The method for installing a support according to any one of claims 1 to 4, comprising:
[Claim 6]
The method for installing a support according to claim 5, wherein in the sixth step, the support member is erected by pulling both sides of a wire passed through a through hole of the support member.
[Claim 7]
A method of installing supports on an earth retaining wall, comprising:
The support includes a wale placed on a bracket provided on the retaining wall and a support member abutting the wale,
The method includes a step of erecting the support member transported to the vicinity of the earth retaining wall,
In the erecting process, the support member is erected by pulling both sides of a wire passed through a through hole of the support member, in this method of installing a support structure.
[Claim 8]
The method for installing a support according to claim 6 or claim 7, wherein a tensioning means for tensioning the wire is provided on the wale.
[Claim 9]
A method for installing a support structure as described in any one of claims 5 to 8, wherein the support member is interposed between the wale and the strut.
[Claim 10]
A construction girder supporting a railway track is located above the decking surface;
The method for installing a support structure according to any one of claims 1 to 9, wherein the distance between the lower end of the construction girder and the flooring surface is within a range of 500 mm to 3000 mm.

1... retaining wall, 2... parent pile, 3... horizontal sheet pile, 5... bracket, 10L, 10R... track, 10LC, 10RC... center line, 11L, 11R... construction girder, 12... hairpin girder, 13... floor attachment surface, 14... intermediate pile, 15... rail, 20, 20'... trolley, 21, 21'... trolley body, 21a... crawler, 21b... trolley frame, 21c... frame, 21d... reaction wall, 21e... female threaded portion, 21f... long bolt, 21g... head, 21h... pressure plate, 22...turntable, 23...support shaft, 24...fastening means, 25...traveling wheels, 26...wheel stopper, 28...rail member, 28a...one end side, 28b...other end side, 30...support, 31, 32...waist rise, 33...secondary member, 33a...reinforcing plate, 34...backfilling material, 37...bracket, 38, 40...wire, 41...bracket, 42...lever block (registered trademark), 50...lifting device, 51...large screw, L...distance, P...construction space, Q...area

Claims (9)

A method for installing supports on an earth retaining wall using a cart equipped with a horizontally rotatable turntable and capable of running on a flooring surface, comprising:
The support structure includes a wale support,
The method comprises:
A first step of running the cart to the vicinity of the earth retaining wall with the wale placed on the turntable;
A second step of changing the direction of the wale by horizontally rotating the turntable near the retaining wall;
A third step of connecting one end of a rail member to a bracket provided on the retaining wall;
a fourth step of sliding the rib whose orientation has been changed on the rail member toward one end side of the rail member and placing it on the bracket;
How to install shoring, including: In the first step, the carriage is run in a direction intersecting an extension direction of the earth retaining wall when viewed from above,
The support installation method according to claim 1 , wherein in the first step, the wale on the turntable extends in a direction along the traveling direction of the carriage when viewed from above. In the first step, the carriage is run in a direction perpendicular to the extension direction of the retaining wall when viewed from above,
The support installation method according to claim 2 , wherein in the second step, the turntable is rotated by approximately 90° when viewed from above. The method for installing supports according to any one of claims 1 to 3, wherein the cart comprises a cart body that runs on a floor mounting surface, and a lifting device configured to raise and lower the turntable relative to the cart body. The support further includes a support member that abuts against the wale placed on the bracket,
The method comprises:
A fifth step of running the cart to the vicinity of the earth retaining wall while the support member is placed on the cart;
A sixth step of lowering the support member from the carriage and erecting it;
The method for installing a support according to any one of claims 1 to 4, comprising: The method for installing supports according to claim 5, wherein in the sixth step, the support member is erected by pulling both sides of the wire passed through the through hole of the support member. The method for installing a support according to claim 6 , further comprising the step of providing a tensioning means for tensioning the wire on the wale. A method for installing a support structure as described in any one of claims 5 to 7 , wherein the support member is interposed between the wale and the strut. A construction girder supporting a railway track is located above the decking surface;
The method for installing a support structure according to any one of claims 1 to 8 , wherein the distance between the lower end of the construction girder and the flooring surface is within a range of 500 mm to 3000 mm.