How to set up shoring

Abstract

To provide a method of installing shoring applicable to a construction site with a low clearance.SOLUTION: In a method of installing shoring 30 on earth retaining wall 1 using a carriage 20 equipped with a turntable 22 capable of horizontal rotation and capable of traveling on a flooring surface 13, the shoring 30 includes wales 31, 32. The method of installing shoring 30 on earth retaining wall 1 comprises a first step of running a truck 20 to the vicinity of the earth retaining wall 1 with the wale 31, 32 placed on a turntable 22, a second step of changing the orientation of the wale 31, 32 by horizontally rotating the turntable 22 in the vicinity of the earth retaining wall 1, a third step of connecting one end side 28a of a rail member 28 to a bracket 5 provided on the earth retaining wall 1, and a fourth step of sliding the wale 31, 32 whose orientation has been changed in the second step on the rail member 28 toward the one end side 28a of the rail member 28 and mounting it on the bracket 5.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a method for installing supports in an earth retaining wall. [Background technology]

[0002] Patent Document 1 discloses that two tiers of wales, upper and lower, are installed on an earth retaining wall, and an anchoring member is erected between these wales. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2001-003364 A Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, lifting equipment such as cranes are used to install shoring such as the above-mentioned wales. However, in construction sites with low headroom (in other words, construction sites with headroom restrictions), it can be difficult to use lifting equipment such as cranes to install shoring.

[0005] In view of the above circumstances, the present invention aims to provide a method for installing supports that can be applied to low-height construction sites. [Means for solving the problem]

[0006] Therefore, the present invention One aspect 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 steps of: 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: Effect of the Invention

[0008] According to the present invention, the work of installing supports can be carried out smoothly even in a low-height construction site. [Brief description of the drawings]

[0009] [Figure 1A] FIG. 1 is a diagram showing a bracket provided on an earth retaining wall in a first embodiment of the present invention. [Figure 1B] FIG. 1 shows two upper and lower wales installed in the first embodiment. [Figure 1C] FIG. 1 shows an installed sub-member in the first embodiment. [Diagram 2] FIG. 1 is a diagram showing a method of installing the ribs in the first embodiment. [Diagram 3] FIG. 1 is a diagram showing a method of installing the ribs in the first embodiment. [Figure 4] FIG. 1 is a diagram showing a method of installing the ribs in the first embodiment. [Diagram 5] FIG. 1 is a diagram showing a method of installing the ribs in the first embodiment. [Figure 6] FIG. 1 is a diagram showing a method of installing the ribs in the first embodiment. [Figure 7] FIG. 1 is a diagram showing a method of installing the ribs in the first embodiment. [Figure 8] FIG. 11 is a diagram showing a traveling state of a cart with a rib placed on a turntable in the first embodiment; [Figure 9] FIG. 1 is a diagram showing a horizontally rotated turntable and a rib in the first embodiment. [Figure 10]FIG. 11 is a diagram for explaining a sliding method of the ribs in the first embodiment. [Figure 11] FIG. 13 is a diagram showing a method for erecting a sub-member in the first embodiment. [Figure 12] FIG. 13 is a diagram showing a dolly according to a second embodiment of the present invention. [Figure 13] FIG. 13 is a diagram showing a cart according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1A to 1C show a method of installing a support 30 (including wales (main members) 31, 32 and a secondary member 33) in a first embodiment of the present invention. FIGS. 2 to 7 show a method of installing a wale 32 in this embodiment. Here, FIGS. 1A to 1C correspond to the AA cross section in FIG. 2. However, in FIGS. 1A to 1C, illustrations of the cross sheet pile 3, rail 15, bogie 20, and the like shown in FIG. 2 are omitted. Also, in FIGS. 2 to 7, illustrations of the tracks 10L, 10R and construction girders 11L, 11R shown in FIGS. 1A to 1C are omitted, and instead, a center line 10LC of the track 10L and a center line 10RC of the track 10R are shown.

[0011] In this embodiment, the earth retaining wall 1 is a parent pile horizontal sheet pile wall, and is composed of a plurality of parent piles 2 and a plurality of horizontal 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.

[0012] The retaining wall 1 extends alongside the railway tracks 10L, 10R in top view. The construction girders 11L, 11R support the tracks 10L, 10R. Each of the construction girders 11L, 11R is supported by a plurality of pinion girders 12, and each pinion girder 12 is supported by a parent pile 2.

[0013] In this embodiment, the flooring surface 13 is excavated and formed with a gap just 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 sub-member 33 in this embodiment) is installed in the low-height construction site (construction space P) above the flooring surface 13, whose overhead is restricted by the construction girders 11L, 11R.

[0014] In the method of installing the shoring 30 in this embodiment, first, as shown in Fig. 1A, a bracket 5 is attached to the parent pile 2 of the earth retaining wall 1. The bracket 5 is configured so as to be able to support each of the upper and lower two stages of wales 31, 32 from below. Note that Figs. 1A to 1C show the bracket 5 supporting the lower stage wale 32 from below.

[0015] 1B, the lower wale 32 is installed on the bracket 5, and similarly, the upper wale 31 is installed above the lower wale 32. The method of installing the lower wale 32 will be described later with reference to FIGS. 2 to 7.

[0016] Next, as shown in Fig. 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 disposed 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 Fig. 11.

[0017] 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 wales 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 earth-retaining wall 1. A backfill material 34 is interposed between the flange surface of the parent pile 2 of the earth-retaining wall 1 and the flange surfaces of the wales 31, 32.

[0018] The sub-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 member. The sub-member 33 is provided with a plurality of reinforcing plates 33a. A through hole (not shown) for passing the wire 40 through is formed in the upper portion of the sub-member 33.

[0019] The wales 31, 32 can be delivered to an 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 delivered wales 31, 32 are placed on a cart 20 and transported to the vicinity of the earth-retaining wall 1. This transportation route includes the girders 12 and intermediate piles 14, and it is difficult to transport long objects such as the wales 31, 32 in the direction in which they are to be erected (the direction along the earth-retaining wall 1). Therefore, in this embodiment, for example, a method of installing the wales 32 shown in FIGS. 2 to 7 is used.

[0020] In the method of installing the wales 32, first, as shown in Figs. 2 and 3, the dolly 20 is used to transport the wales 32 from the aforementioned area Q to the vicinity of the earth retaining wall 1.

[0021] 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 rib 32 placed on the turntable 22.

[0022] The cart 20 comprises a cart body 21 that travels on the floor mounting surface 13, and a turntable (rotating table) 22 provided on the upper part of the cart body 21. The turntable 22 is attached to the upper part of the cart body 21 via a support shaft 23 so as to be horizontally rotatable with respect to the cart body 21. A flared portion 32 is placed on the turntable 22. The flared portion 32 is fastened to the turntable 22 by, for example, fastening means 24.

[0023] The running wheels 25 of the bogie body 21 roll on the rails 15 laid on the mounting surface 13. The rails 15 are made of, for example, channel steel having a U-shaped cross section with an open top, 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 mounting surface 13 along the rails 15. Here, the bogie 20 (bogie body 21) runs on the rails 15 laid on the mounting surface 13, so good running performance of the bogie 20 can be ensured even if the mounting surface 13 is uneven.

[0024] The rails 15 extend substantially horizontally on the bed surface 13 from the aforementioned area Q to the vicinity of the earth retaining wall 1. Therefore, the cart 20 (cart body 21) can travel on the bed surface 13 along the rails 15 from the aforementioned area Q to the vicinity of the earth retaining wall 1.

[0025] In a top view, the rails 15 extend in a direction intersecting the extension direction of the earth-retaining wall 1. Therefore, in this embodiment, the cart 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.

[0026] Here, in this embodiment, the rails 15 extend in a direction perpendicular to the extension direction of the earth retaining wall 1 in a top view. Therefore, in this embodiment, the cart 20 (cart body 21) can travel on the floor mounting 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.

[0027] 2 and 3 corresponds to the "first step" of the present invention, in which the cart 20 is run to the vicinity of the retaining wall 1 with the wale 32 placed on the turntable 22. In this step, the wale 32 on the turntable 22 extends in a direction along the running direction of the cart 20 (in other words, approximately parallel to the extension direction of the rail 15) when viewed from above. Also, in this step, the wale 32 on the turntable 22 extends approximately parallel to the barbed beam 12 when viewed from above.

[0028] 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 wales 32. The process shown in Figures 3 and 4 corresponds to the "second process" of the present invention. Here, Figure 9 shows the horizontally rotated turntable 22 and the wales 32. Note that, prior to the horizontal rotation of the turntable 22, it is desirable to provide wheel stops 26 for the running wheels 25 of the cart 20 (cart body 21).

[0029] In the horizontal rotation by the turntable 22, the horizontal rotation is performed so that the ribs 32 are oriented in the direction in which they are to be erected (direction along the earth 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 earth retaining wall 1 is orthogonal to the extension direction of the earth retaining wall 1 in a top view, in this horizontal rotation process, the turntable 22 is rotated approximately 90° relative to the cart body 21 in a top view.

[0030] Next, as shown in Fig. 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 Fig. 5 corresponds to the "third step" of the present invention. The rail member 28 is, for example, an angle iron.

[0031] 10, the other end 28b of the rail member 28 may be placed on the floor mounting surface 13 near the cart 20, or may be placed on the cart 20. In either case, it is preferable that the pair of rail members 28 are disposed so as to sandwich at least a part of the cart 20 (e.g., the turntable 22) from both sides thereof when viewed from above.

[0032] 5 to 7, the ribs 32, whose orientation has been changed in the above-mentioned horizontal turning step, are slid on the rail member 28 from the other end side 28b to one end side 28a of the rail member 28, and placed on the bracket 5. This step corresponds to the "fourth step" of the present invention. In this step, for example, a sliding method of the ribs 32 shown in FIG. 10 is used.

[0033] In the example shown in Fig. 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 wale rise 32 via a wire 38. In this way, the wale rise 32 on the turntable 22 can be placed on the bracket 5 by sliding it on the rail member 28 and pulling it toward the bracket 5 using a traction means such as a chain block. Here, in Fig. 10, the placement position (installation position) of the wale rise 32 on the bracket 5 is shown by a dashed line.

[0034] In this embodiment, the above-mentioned "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 above-mentioned "fourth step". In other words, the above-mentioned "third step" is not limited to being performed after the above-mentioned "second step", and may be performed prior to the above-mentioned "second step", or prior to the above-mentioned "first step".

[0035] In this manner, the lower wales 32 are installed on the earth-retaining wall 1. It goes without saying that the upper wales 31 can also be installed on the earth-retaining wall 1 using the same method as the wales 32.

[0036] Next, a method for installing the sub-member 33 will be described with reference to Fig. 11. Fig. 11 shows a method for erecting the sub-member 33.

[0037] A sub-member 33 can be delivered to an 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 delivered sub-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 laid-down sub-member 33 transported to the vicinity of the earth retaining wall 1, it is difficult to use a lifting device such as a crane for the erection because the construction girder 11L and the like are located directly above it. Therefore, in this embodiment, for example, a method of erecting the sub-member 33 shown in FIG. 11 is used.

[0038] In the method of installing the sub-member 33, first, the sub-member 33 is placed in a laid-down state (stable state) on the cart 20, and the cart 20 is caused to travel from the aforementioned area Q to the vicinity of the earth retaining wall 1. This step corresponds to the "fifth step" of the present invention.

[0039] Next, the sub-member 33 in the laid-down state that has been transported to the vicinity of the earth-retaining wall 1 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 above-mentioned rail member 28. This step is also a step of erecting the sub-member 33 that has been transported to the vicinity of the earth-retaining wall 1, and corresponds to the "erecting step" of the present invention.

[0040] In this "erecting step", as shown in Figs. 11(a) to 11(c), both sides of the wire 40 passed through the through hole of the sub-member 33 are pulled, thereby gradually erecting the sub-member 33.

[0041] 11(A) to (C), a pair of brackets 41 is provided on the flange surface (surface facing the construction space P) of the upper wale 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 wire 40 passed through the through hole of the secondary member 33 is pulled from both sides using a pulling means such as the lever block (registered trademark) 42, so that the secondary member 33 can be easily erected. During this erection, the secondary member 33 may slide on the rail member 28 described above.

[0042] In this manner, 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.

[0043] According to this embodiment, a method for installing a support 30 on an earth retaining wall 1 using a cart 20 equipped with a horizontally rotatable turntable 22 and capable of traveling on a floor mounting surface 13, the support 30 including wales 31 and 32, and the method for 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 wales 31 and 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 wales 31, 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 earth retaining wall 1, and a fourth step (Figs. 5 to 7, and 10) of sliding the wales 31, 32, the orientation of which 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 wales 31, 32 to proceed smoothly even in a low-height and narrow construction location such as the construction space P described above.

[0044] According to this embodiment, in the first step (see Figs. 2, 3, and 8), the cart 20 is made to travel in a direction intersecting the extension direction of the earth-retaining wall 1 in a top view, and in the first step, the wales 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 made to travel in a direction perpendicular to the extension direction of the earth-retaining wall 1 in a top view, and in the second step (see Figs. 3, 4, and 9), the turntable 22 is rotated by approximately 90° in a top view. In this way, the wales 31, 32 can be efficiently transported to the vicinity of the earth-retaining wall 1 (in other words, the vicinity of the installation position of the wales 31, 32) while avoiding obstacles such as the girders 12 and the intermediate piles 14.

[0045] According to this embodiment, the shoring 30 further includes a support member (sub-member 33) that abuts against the wales 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 (sub-member 33) placed on the cart 20, and a sixth step (see FIG. 11) of unloading the support member (sub-member 33) from the cart 20 and erecting it. In the sixth 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.

[0046] According to the present embodiment, the method of installing the shoring 30 on the earth retaining wall 1 includes the wales 31, 32 placed on the brackets 5 provided on the earth retaining wall 1 and the support members (sub-members 33) abutting against the wales 31, 32, and the method of installing the shoring 30 on the earth retaining wall 1 includes a step of erecting the support members (sub-members 33) transported to the vicinity of the earth retaining wall 1 (see FIG. 11), and in this erecting step, the support members (sub-members 33) are erected by pulling both sides of the wire 40 passed through the through holes of the support members (sub-members 33). This allows the installation work of the support members (sub-members 33) to proceed smoothly even in a low-head and narrow construction location such as the construction space P described above. The support members (sub-members 33) can be members interposed between the wales 31, 32 and the struts.

[0047] According to the present embodiment, a pulling means (for example, lever block (registered trademark) 42) for pulling the wire 40 is provided on the rib 31. Incidentally, a pulling means (for example, lever block (registered trademark) 42) for pulling the wire 40 may be provided on the rib 32.

[0048] Furthermore, according to this embodiment, structures (temporary structures or permanent structures) such as construction girders 11L, 11R supporting railway tracks 10L, 10R are located above the decking surface 13, and the distance L between the lower ends of structures such as construction girders 11L, 11R and the decking surface 13 is within a range of 500 mm to 3000 mm. Even in such a low-headway construction location, the installation work of the wales 31, 32 and the sub-member 33 can be smoothly carried out using the bogie 20.

[0049] 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.

[0050] In this embodiment, the cart 20' includes a cart body 21' that runs on the floor mounting surface 13, a lifting device 50 provided on the upper part of the cart 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 as to be horizontally rotatable relative to the cart body 21' and the lifting device 50. The ribs 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 rib 32 is placed on the turntable 22.

[0051] The carriage body 21' includes crawlers 21a and a carriage frame 21b. The crawlers 21a are disposed on the underside of the carriage frame 21b, and a lifting device 50 is attached to the upper part of the carriage frame 21b. By including the crawlers 21a on the carriage body 21', good travelling performance of the carriage 20' can be ensured even if the mounting surface 13 is uneven.

[0052] 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 include, 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 about its central axis. However, the configuration of the lifting device 50 is not limited to this.

[0053] Particularly, according to this embodiment, the cart 20' includes a cart body 21' that runs on the floor mounting surface 13, and a lifting device 50 that is configured to be able to raise and lower the turntable 22 relative to the cart body 21'. This makes it possible to adjust the height of the turntable 22 to an optimum height for efficiently performing the installation work of the wales 31, 32 and the sub-member 33 on the earth retaining wall 1.

[0054] Incidentally, it goes without saying that the lifting device 50 in this embodiment may be applied to the cart 20 in the above-described first embodiment so that the lifting device 50 can raise and lower the turntable 22 relative to the cart body 21.

[0055] 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 points that differ from the above-described second embodiment will be described.

[0056] 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 screw portion of a long bolt 21f is screwed into a female screw portion 21e formed on the reaction wall 21d. A head 21g is provided at one end of the male screw portion of the long bolt 21f, and a pressing 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 rib 32 on the turntable 22 is pressed against the rail member 28 via the pressing plate 21h, and the rib 32 can be slid on the rail member 28 and placed on the bracket 5. Here, in FIG. 13, the placement position (installation position) of the rib 32 on the bracket 5 is indicated by a dashed line.

[0057] 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 above-mentioned lifting device 50 can be used for this height adjustment.

[0058] In this embodiment, in order to prevent the ribs 32 on the turntable 22 from contacting the reaction wall 21d when the turntable 22 rotates horizontally in accordance with the horizontal rotation of the turntable 22, the reaction wall 21d may be configured to be movable or may be detachably attached to the carriage frame 21b. This also applies to the stand 21c.

[0059] Moreover, it goes without saying that the carriage body 21 in the above-described first embodiment may be used in place of the carriage body 21' in this embodiment.

[0060] In the above-described first to third embodiments, the carts 20, 20' are used to transport the wales 31, 32 and the sub-member 33. In addition to this, the carts 20, 20' may be used to transport the struts.

[0061] 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 moved in a direction intersecting an extension direction of the earth retaining wall when viewed from above, 2. 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 moved in a direction perpendicular to an extension direction of the earth retaining wall when viewed from above, 3. The support installation method according to claim 2, wherein in the second step, the turntable is rotated by approximately 90 degrees when viewed from above. [Claim 4] 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. [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; 5. A method for installing a support according to any one of claims 1 to 4, comprising: [Claim 6] 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] A method for installing a support as described in claim 6 or claim 7, wherein a tensioning means for tensioning the wire is provided on the wale. [Claim 9] 9. The method for installing shoring according to claim 5, 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; 10. The support installation method according to claim 1, 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. [Explanation of symbols]

[0062] 1...earth retaining wall, 2...parent pile, 3...cross 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 thread, 21f...long bolt, 21g...head, 21h...pressure plate , 22...turntable, 23...support shaft, 24...fastening means, 25...traveling wheel, 26...wheel stopper, 28...rail member, 28a...one end side, 28b...other end side, 30...support, 31, 32...wale 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

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:

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.

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.

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.

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:

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.

7. 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.

8. 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.

9. 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.

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