JP5865760B2 - Steel pipe press-fitting device moving device and steel pipe press-fitting device installation method - Google Patents

Description

  The present invention relates to a moving device for moving a steel pipe press-fitting device for press-fitting a steel pipe into the ground in the vertical direction on the ground, and a method for installing the steel pipe press-fitting device on the ground.

  A moving device of a steel pipe press-fitting device (casing press-fitting device) described in Patent Document 1 includes a front and a rear wheel support frame that are detachably attached to both front and rear ends of a base frame of the steel pipe press-fitting device, and each wheel support frame. And a pair of left and right wheels provided on the vehicle.

JP 2000-291364 A

  By the way, in the existing viaduct and bridge improvement work (widening work, seismic reinforcement work, etc.), for example, when widening (increase) the footing of the bridge pier, a steel pipe pile is constructed as the foundation pile directly under the existing bridge girder. There are things to do. In the construction of this steel pipe pile, for example, after installing the steel pipe press-fitting device on the ground directly under the existing bridge girder, the steel pipe is set in this steel pipe press-fitting device, and the steel pipe is rotated by the steel pipe press-fitting device while rotating vertically on the ground. Press fit. When the steel pipe is pressed into the ground to a predetermined depth, the steel pipe is added. In this way, a steel pipe pile having a desired length is constructed by repeating the press-fitting and addition of the steel pipe.

  However, in this construction example, the sky above the steel pipe press-fitting device installed on the ground is limited by the existing bridge girder. Therefore, in order to set the steel pipe to the steel pipe press-fitting device at such a low-headed construction site, the distance between the existing bridge girder and the steel pipe press-fitting device (in other words, the empty head limit) is taken into consideration. The length must be determined.

  In this regard, the length of the steel pipe must be shortened as the distance between the existing bridge girder and the steel pipe press-fitting device becomes shorter. For this reason, in order to obtain a steel pipe pile with a desired length, it is necessary to increase the number of times the steel pipe is added as the distance between the existing bridge girder and the steel pipe press-fitting device decreases, which reduces the construction efficiency of the steel pipe pile. Was invited.

  In addition, the steel pipe press-fitting device needs to obtain a reaction force at the time of steel pipe press-fitting.For this purpose, for example, a temporary pile is installed in advance in the ground around the steel pipe press-fitting device, and a copy is taken from the temporary pile to the steel pipe press-fitting device. And fix.

  However, trying to obtain the reaction force in this way requires complicated work such as installation work of the temporary pile and fixing work between the temporary pile and the steel pipe press-fitting device, so these work reduces the construction efficiency of the steel pipe pile. There was a possibility of making it.

  An object of this invention is to perform construction of a steel pipe pile efficiently in view of such a real condition.

Therefore, in the moving device of the steel pipe press-fitting device according to the present invention, the steel pipe press-fitting device is laid on the bottom surface of the concave portion formed by previously dug a predetermined depth from the ground, and extends in parallel with each other so that the distance between them is A pair of left and right traveling rails wider than the entire width of the steel pipe press-fit device, which is detachably attached to the left and right sides of the steel pipe press-fitting device, and has a wheel unit that can roll on the travel rail, and a steel pipe press-fit device And a telescopic leg that can support the device on the bottom surface of the recess. The steel pipe press-fitting device can be press-fitted into the ground while sandwiching and rotating a cylindrical steel pipe from the outside. The pair of left and right traveling rails branch to the side along the way. The moving device further includes a socket member erected from the bottom surface of the recess in the branch portion. The socket member can be fixed to a steel pipe clamped in advance by a steel pipe press-fitting device.

In the installation method of the steel tube press-fitting apparatus according to the present invention also provides a mobile apparatus of the steel pipe indentation device, it is laid on the bottom of the recess formed in advance floor dug by a predetermined depth of more ground, parallel to each other A pair of left and right traveling rails extending and spaced apart from each other than the full width of the steel pipe press-fitting device, and a traveling unit having wheels that are detachably attached to the left and right sides of the steel pipe press-fitting device and can roll on the travel rails The steel pipe press-fitting device with the traveling unit attached thereto, using the moving device, which is attached to the steel pipe press-fitting device and is capable of supporting the steel pipe press-fitting device on the bottom surface of the recess, and includes a telescopic leg . The traveling unit and the traveling rail are separated from each other by moving the rail on the traveling rail to a predetermined position and lifting the steel pipe press-fitting device that has traveled to the predetermined position by extending the leg portion. Departed, it lowers the steel pipe indentation device by shortening leg, placing a steel tube press-fitted device on the bottom of the recess between the left and right pair of running rails.

  According to the present invention, at a predetermined position, the steel pipe press-fitting device is placed on the bottom surface of a recess formed by flooring in advance by a predetermined depth from the ground. As a result, even in a low-empty construction site as described above, the upper end of the steel pipe press-fitting device is lower than when the steel pipe press-fitting device is placed on the ground, so the head limitation is substantially reduced. Alleviated. Therefore, since the length of the steel pipe can be increased according to the degree of relaxation, the above-described work of adding the steel pipe can be reduced, and the construction efficiency of the steel pipe pile can be improved.

  According to the invention, the steel pipe press-fitting device is placed on the bottom surface of the recess between the pair of left and right traveling rails at a predetermined position. As a result, the pair of left and right traveling rails constituting the moving device of the steel pipe press-fitting device can function as a reaction force receiver for the steel pipe press-fitting device, thereby reducing the troublesome work such as the temporary pile installation work as described above. And eventually, the steel pipe pile can be efficiently constructed.

The figure which shows schematic structure of the pile construction apparatus in 1st Embodiment of this invention. Diagram showing schematic configuration of muddy water treatment facility The figure which shows schematic structure of a steel pipe press-fitting device and its moving device Diagram showing how to install a steel pipe press-fitting device Diagram showing how to install a steel pipe press-fitting device The figure which shows the movement method of the steel pipe press fitting device Diagram showing construction method of steel pipe pile Diagram showing construction method of steel pipe pile Diagram showing construction method of steel pipe pile Diagram showing construction method of steel pipe pile Diagram showing construction method of steel pipe pile Diagram showing construction method of steel pipe pile Diagram showing construction method of steel pipe pile Diagram showing construction method of steel pipe pile Diagram showing construction method of steel pipe pile The figure which shows schematic structure of the moving apparatus of the steel pipe press-fit apparatus in 2nd Embodiment of this invention. The figure which shows the moving device of the steel pipe press-fitting device just before the direction change of the steel pipe press-fitting device The figure which shows an example of the fixing method of a temporary casing and a socket member The figure which shows the moving device of the steel pipe press-fitting device at the time of the direction change of the steel pipe press-fitting device The figure which shows the moving device of the steel pipe press-fitting device after the direction change of the steel pipe press-fitting device

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a schematic configuration of a pile construction apparatus in the first embodiment of the present invention. FIG. 2 shows a schematic configuration of the muddy water treatment facility. FIG. 3A is a side view of the steel pipe press-fitting device and its moving device. FIG.3 (b) is a top view of a steel pipe press-fit apparatus and its moving apparatus.

  A pile construction apparatus 1 used for construction of a steel pipe pile in a place where there is an empty head limit L includes a base machine 2, a columnar leader 3 supported upright by the base machine 2, and a swivel head that moves up and down along the leader 3. (Rotary head) 4, a rotary excavator 5 using the swivel head 4 as a drive source, a steel pipe press-fitting device (power casing jack) 7 disposed below the swivel head 4 and moved / installed by the moving device 6, It is comprised by. Here, the steel pipe press-fitting device 7 sandwiches a cylindrical steel pipe (casing) 8 constituting the steel pipe pile from the outside and press-fits it into the ground in the vertical direction.

  The base machine 2 includes a crawler belt 21 that is a traveling means installed in the lower part thereof, a base machine main body 22, and a turning device 23 that horizontally turns the base machine main body 22 relative to the crawler belt 21. . That is, the base machine 2 is an all-round base machine equipped with a crawler belt 21 in the lower part thereof. The base machine 2 can travel in any direction on the ground by the crawler belt 21.

A bracket 30 is provided on the back surface of the lower end portion of the reader 3, and the bracket 30 is pivotally supported on the lower front side of the base machine body 22.
A bracket 31 is provided on the upper rear surface of the reader 3, and the bracket 31 is connected to a rod 33 of a hydraulic cylinder 32 provided at the front center of the base machine body 22.

The back surface of the swivel head 4 is attached to a slide block 41, and is slidably supported by the reader 3 via the slide block 41. Therefore, the swivel head 4 moves up and down along the leader 3 along with the slide block 41 in front of the leader 3.
The swivel head 4 outputs a rotational driving force using a motor (not shown) as a drive source and having a vertical direction as a rotation axis.

The rotary excavator 5 using the swivel head 4 as a drive source includes a plurality of cylindrical reverse rods (excavation rods) 51 connected in series in the vertical direction and a reverse provided at the lower end (the most advanced) 51a of the reverse rod 51. And a bit (excavation bit) 52. Here, the outer diameter of the reverse bit 52 is smaller than the inner diameter of the steel pipe 8.
The reverse rod 51 has an upper end 51 b connected to the swivel head 4, and rotates about the vertical direction as a rotation axis by the rotational driving force from the swivel head 4. By this rotation, the reverse bit 52 located at the lower end 51 a of the reverse rod 51 rotates and excavates the earth and sand in the steel pipe 8.

  The excavated sediment generated by the rotary excavation is sucked together with the muddy water supplied in advance into the steel pipe 8 (excavation hole 9) through the opening (not shown) of the lower end 51a of the reverse rod 51, It rises and is sent to the muddy water treatment facility 10 (see FIG. 2) outside the steel pipe 8.

  The muddy water treatment facility 10 includes a muddy water tank 101 that stores muddy water, a sand pump 102 that sends muddy water in the muddy water tank 101 to the excavation hole 9, and a suction that sucks muddy water and earth and sand in the excavation hole 9 through the reverse rod 51. It comprises a pump 103, a primary screen 104, a secondary screen 105, and a cyclone screen 106 that separate muddy water and earth discharged from the suction pump 103 from each other, and a residual soil tank 107 that stores the separated earth and sand. The In the present embodiment, only the muddy water is stored in the muddy water tank 101. Alternatively, a stable liquid containing muddy water and bentonite solution may be stored in the muddy water tank 101. The stabilizing liquid in the tank 101 is sent to the excavation hole 9 through the sand pump 102.

  Here, a method of forming the excavation hole 9 in the steel pipe 8 (in other words, a method of drilling the steel pipe 8) will be further described with reference to FIGS.

  In general, when the excavation hole is formed using an excavator such as a boring machine, a method of filling the excavation hole with mud water and discharging the excavated sediment from the excavation hole by mud water circulation may be employed. Of this type of construction method, the TBH construction method (top drive reverse construction method) is adopted in this embodiment.

  In the TBH method of the present embodiment, as shown in FIGS. 1 and 2, the swivel head 4 that can be moved up and down along the upright leader 3 of the pile construction device 1 rotates a plurality of reverse rods 51 connected in series. And let go down. Further, according to the rotation of the reverse rod 51, the earth and sand in the steel pipe 8 is rotated and excavated by the reverse bit 52. In parallel with this excavation, the mud in the mud tank 101 is sent to the excavation hole 9 via the sand pump 102. The muddy water and excavated earth and sand in the excavation hole 9 rises in the reverse rod 51 from the opening (not shown) at the lower end 51 a of the reverse rod 51 and is sucked into the suction pump 103. The muddy water and soil discharged from the suction pump 103 are guided to the primary screen 104, the secondary screen 105, and the cyclone screen 106, where the muddy water and the earth and sand are separated. The separated muddy water is supplied again to the excavation hole 9 via the muddy water tank 101 and the sand pump 102. On the other hand, the separated earth and sand are sent to the remaining earth tank 107.

Returning to FIG. 1, the boom 35 of the auxiliary crane 34 is horizontally attached to the top of the leader 3 so as to protrude from the leader 3 toward the left front of the base machine 2.
A lifting winch 36 for the auxiliary crane 34 is installed at the upper rear end of the base machine body 22.
The wire rope 37 drawn out from the winch 36 is stretched over a plurality of guide pulleys (not shown) of the boom 35 and connected to a hanging tool 38 located below the tip of the boom 35. Therefore, the auxiliary crane 34 can lift a heavy object via the hanger 38 by winding the wire rope 37 with the winch 36.

A steel pipe press-fitting device 7 is arranged on the ground in front of the base machine 2 (crawler belt 21).
As shown in FIG. 3, the steel pipe press-fitting device 7 includes a rectangular base frame 71 positioned on the lower side thereof, steel pipe press-fit hydraulic jacks 72 provided at four corners of the base frame 71, and a steel pipe press-fit hydraulic jack, respectively. A lifting frame 73 that moves up and down according to the expansion and contraction of 72, a rotating cylinder 74 that is rotatably supported by the lifting frame 73, and a chuck device 75 (not shown in FIG. 3B) attached to the upper part of the rotating cylinder 74. And a plurality of (two in the figure) hydraulic motors 76 for rotating the steel pipe that are installed on the lifting frame 73 and rotate the rotating cylinder 74.

  At the time of press-fitting the steel pipe 8 into the ground, the steel pipe press-fitting device 7 grips the steel pipe 8 from the outside by the chuck device 75 in a state where the steel pipe 8 is inserted into the rotary cylinder 74. In addition, while the steel pipe 8 is gripped by the chuck device 75, the elevating frame 73 is lowered by the steel pipe press-fit hydraulic jack 72 while rotating the rotating cylinder 74 by the steel pipe rotating hydraulic motor 76, thereby bringing the steel pipe 8 to the ground. Press fit.

  The moving device 6 for moving the steel pipe press-fitting device 7 includes a pair of left and right traveling rails 61, a traveling unit 62 that is detachably attached to the front and rear sides of the left and right sides of the base frame 71, and the front, rear, left and right ( In detail, it is comprised by the raising / lowering jack 63 which is a leg part attached to the right-and-left both sides of the front-and-rear end part. In the present embodiment, for the sake of convenience, the moving direction of the steel pipe press-fitting device 7 is defined as the forward direction, and the front, rear, left and right of the steel pipe press-fitting device 7 and the moving device 6 are defined.

  As shown in FIG. 1, the recess 64 formed by flooring a predetermined depth from the ground is composed of a rectangular bottom surface 65 and side walls 66. Here, the predetermined depth of the floor digging is set in advance in consideration of the overall height, weight, and the degree of the empty head limit L of the steel pipe press-fitting device 7.

The traveling rails 61 are respectively laid on both side ends of the bottom surface 65 of the recess 64.
A steel plate 65a wider than the traveling rail 61 is interposed between the traveling rail 61 and the bottom surface 65 of the recess 64 (see FIG. 6).
Moreover, as shown in FIG. 3, the pair of left and right traveling rails 61 extend in parallel to each other and are laid so that the distance between them is wider than the entire width of the base frame 71 (steel pipe press-fitting device 7). .

The traveling rail 61 is made of an H-shaped steel material provided with flanges 61b and 61c on both sides of the web 61a. Here, the flange 61 b is a flange (outer flange) on the side of the traveling rail 61 that faces the side wall 66 of the recess 64, and the flange 61 c is a flange on the side opposite to the side of the recess 64 that faces the side wall 66 ( Inner flange) (see FIG. 6).
The outer flange 61 b of the traveling rail 61 is in surface contact with the side wall 66 of the recess 64.
Between the traveling rails 61, a plurality of pipe supports 67 for appropriately maintaining a rail interval are provided.

The traveling unit 62 has wheels with both flanges that can roll on the inner flange 61 c of the traveling rail 61.
The traveling unit 62 is detachably fixed (for example, bolted) to the base frame 71 so as to protrude laterally from the left and right side edges of the base frame 71.
The elevating jack 63 can support the steel pipe press-fitting device 7 on the bottom surface 65 of the recess 64 and is extendable. The lifting jack 63 is, for example, a hydraulic jack, and the steel pipe press-fitting device 7 can be lifted and lowered by expansion and contraction thereof.

The moving device 6 includes a traction device 80 that pulls the steel pipe press-fitting device 7.
The traction device 80 includes a wire rope 81 for traction of the steel pipe press-fitting device 7 and a winding winch 82 that winds up the wire rope 81.
One end of the wire rope 81 is detachably fixed to the front end portion of the base frame 71 of the steel pipe press-fitting device 7.
The winding winch 82 is an electric winch and is provided at the upper center of an H-shaped steel member 83 having both ends fixed to the front ends of the pair of left and right traveling rails 61, and the wire rope 81 can be wound up from the other end.

Next, a method for installing the steel pipe press-fitting device 7 using the moving device 6 will be described with reference to FIGS. 4 and 5 in addition to FIGS.
FIGS. 4A to 5D show a method of installing the steel pipe press-fitting device 7 in a place where the empty head limit L is present.

First, as shown in FIG. 4A, the ground including the traveling start position 101 of the steel pipe press-fitting device 7 without the empty head restriction, the construction position 102 with the empty head restriction L, and the hoisting winch installation position 103 at a predetermined depth. The floor 64 is dug to form the recess 64. Here, the construction position 102 corresponds to the “predetermined position” of the present invention.
Next, the traveling rail 61 is laid on the bottom surface 65 of the recess 64, and the H-shaped steel material 83 and the winding winch 82 are installed at the winch installation position 103.
Next, the steel pipe press-fitting device 7 with the travel unit 62 attached is lifted by the crane 110 and placed on the travel rail 61 at the travel start position 101. Further, the wire rope 81 is pulled out from the winding winch 82, and one end thereof is fixed to the front end portion of the steel pipe press-fitting device 7 (base frame 71).

Next, as shown in FIG. 4A, the steel pipe press-fitting device 7 is caused to travel on the traveling rail 61 from the traveling start position 101 to the construction position 102 by winding the wire rope 81 with a winding winch 82.
Next, the wire rope 81 and the winding winch 82 are removed, and the lifting jack 63 is extended at the construction position 102 to raise the steel pipe press-fitting device 7, thereby separating the wheels of the traveling unit 62 and the traveling rail 61. .
Next, the traveling unit 62 is detached from the steel pipe press-fitting device 7.

  Next, as shown in FIG. 5C, the steel pipe press-fitting device 7 is placed on the bottom surface 65 of the recess 64 between the traveling rails 61 by shortening the lifting jack 63 and lowering the steel pipe press-fitting device 7.

Next, as shown in FIG. 5D, the pile construction apparatus 1 is arranged at the construction position 102 in the same manner as in FIG. Here, FIG.5 (d) respond | corresponds to the front view of the pile construction apparatus 1 shown in FIG. Further, as shown in FIG. 1, a spacer member 67 is interposed between the base frame 71 and the traveling rail 61 of the steel pipe press-fitting device 7. Specifically, the spacer member 67 is interposed in a gap between the base frame 71 of the steel pipe press-fitting device 7 and the inner flange 61c of the traveling rail 61, as shown in FIG.
In this way, the steel pipe press-fitting device 7 is installed on the bottom surface 65 of the recess 64 between the traveling rails 61 in the construction place 102.

  Next, a method for moving the steel pipe press-fitting device 7 installed at the construction position 102 will be described with reference to FIG.

  FIG. 6A shows the steel pipe press-fitting device 7 placed on the bottom surface 65 of the recess 64 at the construction position 102. FIG. 6B shows the steel pipe press-fitting device 7 placed on the traveling rail 61 via the traveling unit 62. 6A, a steel plate 65a is interposed between the traveling rail 61, both side portions of the base frame 71 of the steel pipe press-fitting device 7 and the lifting jack 63, and the bottom surface 65 of the recess 64. When the bottom surface 65 of 64 is relatively hard, the steel plate 65a may be omitted.

When moving the steel pipe press-fitting device 7 installed at the construction position 102 to another position, first, the lifting jack 63 is extended from the state shown in FIG. Hold higher.
Next, the traveling unit 62 is attached to the steel pipe press-fitting device 7.
Next, the elevating jack 63 is shortened to lower the steel pipe press-fitting device 7, thereby placing the steel pipe press-fitting device 7 on the travel rail 61 via the travel unit 62.

Next, as shown in FIG. 6B, the lifting jack 63 is further shortened so that the lifting jack 63 is separated from the bottom surface 65 of the recess 64. Thereafter, the steel pipe press-fitting device 7 is caused to travel on the traveling rail 61 using the wire rope 81 and the winding winch 82.
In this way, the steel pipe press-fitting device 7 installed at the construction position 102 can be moved to another construction location or the like.

Next, the construction method of the steel pipe pile using the pile construction apparatus 1 is demonstrated using FIGS.
Fig.7 (a)-FIG.15 (shi) show the construction flow of a steel pipe pile.

  First, as shown in FIG. 7A, the swivel head 4 and the reader 3 are moved to the side of the base machine 2 by turning the base machine main body 22 of the pile construction apparatus 1 by 90 ° to the side (left side in the figure). In this state, the steel pipe 8 is set in the steel pipe press-fitting device 7 using the crane 111. In the present embodiment, the steel pipe 8 is lifted using the crane 111 when the steel pipe 8 is set in the steel pipe press-fitting device 7, but the means for lifting the steel pipe 8 is not limited to this, for example, an auxiliary crane 34 may be used to lift the steel pipe 8. Alternatively, a clamp for gripping a steel pipe may be provided on the forklift, and the steel pipe 8 may be set in the steel pipe press-fitting device 7 using this forklift with a clamp.

  Next, as shown in FIG. 7 (a), the steel pipe 8 is rotated by the steel pipe press-fitting device 7 and pressed into the ground by a predetermined depth (for example, to a depth of about half of the total length of the steel pipe 8). Further, by turning the base machine main body 22 of the pile construction device 1, the swivel head 4 and the leader 3 are returned to the front position of the base machine 2, and the rotary excavation device 5 (reverse rod) is attached to the swivel head 4 of the pile construction device 1. 51 and reverse bit 52) are set. Here, since the outer diameter of the reverse bit 52 is smaller than the inner diameter of the steel pipe 8, the rotary excavator 5 can be disposed inside the steel pipe 8. Further, when the rotary excavator 5 is set, the rotary shaft of the swivel head 4, the rotary axis of the rotary excavator 5, and the central axis (rotary axis) of the steel pipe 8 are arranged so as to substantially coincide with each other. With the above arrangement, the rotary excavating device 5 can rotationally excavate the earth and sand in the steel pipe 8 sandwiched between the steel pipe press-fitting devices 7 (that is, the steel pipe 8 can be dug).

Next, as shown in FIG. 8 (c), the rotary excavator 5 (reverse rod 51 and reverse bit 52) is moved by the rotational driving force from the swivel head 4 while lowering the swivel head 4 of the pile construction device 1. By rotating, the inside of the steel pipe 8 is drilled. Thereby, the excavation hole 9 is formed in the steel pipe 8. In parallel with this drilling, the steel pipe press-fitting device 7 can press-fit the ground while rotating the steel pipe 8.
When the swivel head 4 reaches the lower limit of the liftable range, the swivel head 4 of the pile construction device 1 is then separated from the reverse rod 51 and raised.

  Next, as shown in FIG. 8D, the swivel head 4 and the leader 3 of the base machine 2 are turned by turning the base machine body 22 of the pile construction device 1 by 90 ° to the side (left side in the figure). The steel pipe 8 is added using the crane 111 in this state, being located on the side (left side in the figure). When the steel pipes 8 are added, the steel pipes 8 are connected and fixed, for example, by welding the joint portions of the steel pipes 8. A male thread part and a female thread part are formed in advance at both ends of the steel pipe 8, and the male thread part of one steel pipe 8 and the female thread part of the other steel pipe 8 are screwed together to connect and fix the steel pipes 8 together. May be. Further, the steel pipes 8 may be connected and fixed by so-called pinning.

Next, as shown in FIG. 9 (o), the steel pipe 8 is rotated by the steel pipe press-fitting device 7 and pressed into the ground by a predetermined depth (for example, to the extent that the reverse rod 51 protrudes from the upper end of the steel pipe 8). To do.
Next, the base machine main body 22 of the pile construction apparatus 1 is turned to return the swivel head 4 and the leader 3 to the front position of the base machine 2, and a new reverse rod 51 is added to the swivel head 4 for rotary excavation. The device 5 (reverse rod 51 and reverse bit 52) is set.

  Next, as shown in FIG. 9 (f), the rotary excavator is driven by the rotational driving force from the swivel head 4 while the swivel head 4 of the pile construction device 1 is lowered, as in FIG. 8 (c). 5 is rotated to drill the inside of the steel pipe 8 (that is, the steel pipe 8 is dug).

  In this manner, the addition of the steel pipe 8 and the reverse rod 51 and the drilling (inner excavation) in the steel pipe 8 are repeated, so that the tip (bottom end) of the steel pipe 8 is as shown in FIG. The steel pipe 8 is press-fitted and the excavation hole 9 is formed until the ground support layer 115 is reached.

  Therefore, in the above-described FIGS. 7A to 10G, the steel pipe 8 is pressed into the ground by the steel pipe press-fitting device 7 until the tip of the steel pipe 8 reaches the ground support layer 115. Further, when the steel pipe 8 is press-fitted into the ground, the rotary excavator 5 excavates the earth and sand in the steel pipe 8. Further, when excavating the earth and sand in the steel pipe 8, muddy water is supplied to the excavation hole 9 in the steel pipe 8 by the mud treatment facility 10, and the excavated earth and sand generated in the steel pipe 8 is discharged out of the steel pipe 8 together with the mud water. .

  In addition, as shown in FIG. 10 (ki), in the state in which the steel pipe 8 is press-fitted until the tip of the steel pipe 8 reaches the ground support layer 115, a temporary steel pipe (Yatco) 116 is provided at the uppermost end of the steel pipe 8. The lower end of the is detachably fixed. The temporary steel pipe 116 is press-fitted into the ground by the steel pipe press-fitting device 7 in the same manner as the steel pipe 8.

After the steel pipe 8 is press-fitted and bored (inner digging) until the tip of the steel pipe 8 reaches the ground support layer 115, as shown in FIG. The pile construction device 1 is retracted leaving the moving device 6 and the rotary excavator 5 (reverse rod 51 and reverse bit 52), and a funnel-shaped hopper 120 is attached to the upper end 51b of the reverse rod 51. Then, the hopper 120 is gradually lifted by the crane 111 while supplying concrete as a rooting material to the hopper 120. As a result, the concrete supplied to the hopper 120 (the opening of the upper end 51b of the reverse rod 51) descends in the reverse rod 51 and is discharged and filled into the tip of the steel pipe 8 from the opening of the lower end 51a of the reverse rod 51. Is done.
When the filling of the concrete at the tip of the steel pipe 8 is completed, the rotary excavator 5 (reverse rod 51 and reverse bit 52) is removed, and the concrete is solidified at the tip of the steel pipe 8 and solidified at the tip of the steel pipe 8. Part 121 is formed.

  Next, as shown in FIG. 12 (K), a muddy water discharge pump 122 and a muddy water discharge pipe 123 are provided in the steel pipe 8. Then, the muddy water remaining in the steel pipe 8 is sucked by the muddy water discharge pump 122 and discharged out of the steel pipe 8 through the muddy water discharge pipe 123.

  When the discharge of the muddy water in the steel pipe 8 is completed, the muddy water discharge pump 122 and the muddy water discharge pipe 123 in the steel pipe 8 are removed, and then, as shown in FIG. Backfill the remaining soil inside. This residual soil is earth and sand collected in the residual soil tank 107 of the muddy water treatment facility 10. In this way, by filling back the excavated earth and sand generated when the steel pipe 8 is dug into the steel pipe 8, it is possible to reduce the volume of the remaining soil during the construction of the steel pipe pile. It should be noted that the step of filling back the excavated earth and sand in the steel pipe 8 can be omitted.

When the backfilling of the remaining soil into the steel pipe 8 and the temporary steel pipe 116 is completed, the temporary steel pipe 116 is pulled out from the ground using the crane 111 and the steel pipe press-fitting device 7 as shown in FIG.
Next, the steel pipe press-fitting device 7 and the moving device 6 are removed.

  In this way, as shown in FIG. 15 (), a steel pipe pile 130 constituted by the steel pipe 8, having the root consolidation portion 121, and having the remaining soil buried in the steel pipe 8 can be constructed.

  According to the present embodiment, the moving device 6 of the steel pipe press-fitting device 7 is laid on the bottom surface 65 of the recess 64 formed by digging a predetermined depth from the ground in advance, and extends parallel to each other. A pair of left and right traveling rails 61 that are wider than the entire width of the steel pipe press-fitting device 7, and a traveling unit 62 that is detachably attached to the left and right sides of the steel pipe press-fitting device 7 and has wheels that can roll on the travel rail 61. And a telescopic lifting jack 63 (leg portion) capable of supporting the steel pipe press-fitting device 7 on the bottom surface 65 of the recess 64. As a result, the steel pipe press-fitting device 7 can be placed on the bottom surface 65 of the recess 64, so that the steel pipe press-fitting device 7 is placed on the ground even in the low-empty construction place 102 as described above. As a result, the upper end portion of the steel pipe press-fitting device 7 becomes lower, and as a result, the empty head limitation is substantially relaxed. Therefore, since the length of the steel pipe 8 can be increased according to the degree of relaxation, it is possible to reduce the work of adding the steel pipe 8 as described above, thereby improving the construction efficiency of the steel pipe pile 130. it can.

  According to this embodiment, the steel pipe press-fitting device 7 is placed on the bottom surface 65 of the recess 64 between the pair of left and right traveling rails 61. As a result, the pair of left and right traveling rails 61 can function as a reaction force receiver for the steel pipe press-fitting device 7, so that troublesome work such as temporary pile installation work as described above can be reduced. Can be carried out efficiently.

  Moreover, according to this embodiment, since the traveling rail 61 consists of H-section steel materials in which the flanges 61b and 61c were each provided in the both sides of the web 61a, a ready-made H-section steel material can be used as the traveling rail 61.

  Further, according to the present embodiment, the flange 61 b on the side of the traveling rail 61 facing the side wall 66 of the recess 64 is in surface contact with the side wall 66 of the recess 64. Thereby, since the movement in the horizontal direction of the traveling rail 61 is restricted by the side wall 66 of the recess 64, a member for fixing the traveling rail 61 to the ground can be simplified.

  According to the present embodiment, the moving device 6 further includes the traction device 80 that pulls the steel pipe press-fitting device 7. Thereby, the movement of the steel pipe press-fitting device 7 can be performed without depending on human power.

  Further, according to the present embodiment, the traction device 80 includes the wire rope 81 whose one end is fixed to the front portion of the steel pipe press-fitting device 7 and the front end side of the pair of left and right traveling rails 61. And a winding winch 82 for further winding. Thereby, the steel pipe press-fitting device 7 can be pulled and moved in the horizontal direction with a relatively simple configuration.

  Further, according to the present embodiment, the steel pipe press-fitting device 7 with the travel unit 62 mounted is traveled on the travel rail 61 to the construction place 102 (predetermined position) using the moving device 6 and travels to the construction place 102. The steel pipe press-fitting device 7 is lifted by the extension of the lifting jack 63 to separate the traveling unit 62 and the traveling rail 61, the traveling unit 62 is detached from the steel pipe press-fitting device 7, and the steel pipe press-fitting device is shortened by shortening the lifting jack 63. 7 is lowered, and the steel pipe press-fitting device 7 is placed on the bottom surface 65 of the recess 64 between the pair of left and right traveling rails 61. Thereby, even in the low-empty construction place 102 as described above, the upper end portion of the steel pipe press-fitting device 7 becomes lower than the case where the steel pipe press-fitting device 7 is placed on the ground. It can be substantially relaxed.

  Further, according to the present embodiment, the spacer member 67 is interposed in the gap between the steel pipe press-fitting device 7 placed on the bottom surface 65 of the recess 64 and the traveling rail 61 at the construction place 102 (predetermined position). Thereby, since the installation position of the steel pipe press-fit apparatus 7 can be adjusted using the spacer member 67, the steel pipe press-fit apparatus 7 can be installed in the construction place 102 with high accuracy.

  In the present embodiment, the concrete has been described as the root hardening material constituting the root hardening portion 121. However, the root hardening material is not limited to this and may be, for example, mortar. In addition, when the earth and sand collected in the residual soil tank 107 are mixed at a predetermined ratio and mixed with stirring, and the mortar or concrete containing the earth and cement is used as a rooting material, the properties of the earth and sand are grasped and adjusted. Since the mixing ratio of earth and sand and cement can be determined, the quality of the root hardening part 121 can be stabilized. Moreover, in this case, since the residual soil at the time of steel pipe pile construction is utilized for formation of the root consolidation part 121, volume reduction of residual soil is realizable.

  FIG. 16 shows a schematic configuration of the moving device of the steel pipe press-fitting device in the second embodiment of the present invention. FIG. 16A is a plan view of the moving device, and FIG. 16B is a side view of the moving device.

  Differences from the first embodiment will be described.

The right traveling rail 61 of the pair of left and right traveling rails 61 is divided in the middle by the rail width of the traveling rail 61. In the dividing portion 140, three rail pieces (first to third rail pieces 141 to 143) are detachably laid on the bottom surface 65 of the recess 64.
The first to third rail pieces 141 to 143 are each made of an H-shaped steel material having the same web width as that of the traveling rail 61.

Each of the first and second rail pieces 141 and 142 has a substantially square shape in plan view, is located at both ends of the dividing portion 140, and contacts the traveling rail 61.
Both ends of the third rail piece 143 are in contact with the first and second rail pieces 141 and 142.

  Therefore, in the dividing part 140 of the right traveling rail 61, the first rail piece 141, the third rail piece 143, and the second rail piece 142 are arranged in this order in the moving direction of the steel pipe press-fitting device 7. In this embodiment, two third rail pieces 143 are prepared in advance, and one third rail piece 143 is shown in FIG.

The concave portion 64 extends laterally (rightward in the figure) from the dividing portion 140. The recessed portion extending portion 64 ′ is composed of a rectangular bottom surface 65 ′ and a side wall 66 ′ (see FIG. 20B).
The traveling rails 61 are respectively laid on both end portions of the bottom surface 65 ′ of the extended portion 64 ′ of the recess. These running rails 61 extend in parallel to each other, and are laid so that the interval between them is wider than the entire width of the base frame 71 (steel pipe press-fitting device 7).

A steel plate 65a wider than the traveling rail 61 is interposed between the bottom surface 65 ′ of the extension 64 ′ of the recess and the traveling rail 61 (see FIG. 20B).
The running rail 61 has an outer flange 61b in surface contact with the side wall 66 'of the extension 64' of the recess (see FIG. 20B).

  As described above, in the present embodiment, the traveling rail 61 laid on the bottom surface 65 of the concave portion 64 branches to the side (right side in the drawing) in the middle thereof (the branching portion 145 including the dividing portion 140). The branched traveling rail corresponds to the traveling rail 61 laid on the bottom surface 65 ′ of the extension 64 ′ of the recess.

A socket member 146 constituting the moving device 6 is erected on the bottom surface 65 of the concave portion 64 in the branching portion 145.
The socket member 146 includes a steel plate 147 that is a plate-like member and a steel circular pipe member 148.

The steel plate 147 is placed on the bottom surface 65 of the recess 64 and is fixed to the lower portion of the traveling rail 61 by welding or the like, or directly fixed to the bottom surface 65 of the recess 64.
The circular pipe member 148 has a lower end fixed to the steel plate 147 and extends in the vertical direction, and has a predetermined height. Here, the predetermined height is a height such that the steel pipe press-fitting device 7 traveling on the traveling rail 61 and the circular pipe member 148 do not contact each other, for example, the height of the traveling rail 61.
Further, the outer diameter of the circular pipe member 148 is smaller than the inner diameter of the temporary casing 150 described later.

  Next, the movement method including the direction change of the steel pipe press-fitting device 7 will be described with reference to FIGS. 17 to 20 in addition to FIG.

  FIG. 17 shows the moving device 6 immediately before the direction change of the steel pipe press-fitting device 7 at the branch portion 145, FIG. 17 (a) is a plan view thereof, and FIG. 17 (b) is a side view thereof. FIG. 17C shows the temporary casing 150 before being attached to the socket member 146. 18 shows an example of a fixing method between the temporary casing 150 and the socket member 146, FIG. 18 (a) is a plan view thereof, and FIG. 18 (b) is a cross-sectional view taken along line AA of FIG. 18 (a). is there. FIG. 19 shows the moving device 6 when the direction of the steel pipe press-fitting device 7 is changed at the branching portion 145, FIG. 19 (a) is a plan view thereof, and FIG. 19 (b) is a side view thereof. 20 shows the moving device 6 after the direction change of the steel pipe press-fitting device 7 at the branching portion 145, FIG. 20 (a) is a plan view thereof, and FIG. 20 (b) is a BB cross section of FIG. 20 (a). FIG.

  First, as shown in FIG. 16, the first rail piece 141, the third rail are sequentially formed on the dividing portion 140 of the right traveling rail 61 laid on the bottom surface 65 of the recess 64 in the moving direction of the steel pipe press-fitting device 7. The piece 143 and the second rail piece 142 are arranged side by side. In this arrangement, the outer flange and the inner flange of the first to third rail pieces 141 to 143 are directly connected to the outer flange 61b and the inner flange 61c of the right traveling rail 61 laid on the bottom surface 65 of the recess 64, respectively. Arranged in line.

  When the steel pipe press-fitting device 7 with the travel unit 62 is caused to travel on the travel rail 61 laid on the bottom surface 65 of the recess 64 by the traction device 80 and the steel pipe press-fitting device 7 arrives at the branching portion 145, as shown in FIG. The temporary casing 150 made of steel pipe is inserted into the rotating cylinder 74 of the steel pipe press-fitting device 7, and the circular pipe member 148 of the socket member 146 is further inserted into the lower end of the temporary casing 150, so that the temporary casing 150 and the socket member 146 are inserted. And fix.

  Here, the temporary casing 150 has an outer diameter that can be clamped by the chuck device 75 of the steel pipe press-fitting device 7. The temporary casing 150 has a length that can be clamped by the chuck device 75 of the steel pipe press-fitting device 7 when the temporary casing 150 is fixed to the socket member 146. Therefore, the temporary casing 150 can be shorter than the steel pipe 8.

FIG. 18 shows an example of a method for fixing the temporary casing 150 and the socket member 146.
In the circular pipe member 148 of the socket member 146, a plurality of (four in the figure) holes 151 that communicate the inner side and the outer side are previously formed radially at substantially equal intervals. A nut 152 is welded and fixed to the inner surface of the circular pipe member 148 so as to be connected from the inside of the member 148. Note that the temporary casing 150 and the circular pipe member 148 in this example have an inner diameter that allows an operator to enter and work inside each of them.

  After inserting the circular pipe member 148 into the lower end portion of the temporary casing 150 and bringing the temporary casing 150 into contact with the steel plate 147, the bolts 153 are screwed into the nuts 152 from the inside of the circular pipe member 148, and further the screws 153 are screwed in. , The bolt 153 contacts the inner surface of the temporary casing 150 through the hole 151 and presses the temporary casing 150. The temporary casing 150 and the socket member 146 are fixed to each other by the pressing force of the bolt 153 acting in all directions.

Returning to FIG. 17, the traveling unit is then removed by removing the wire rope 81 and the hoisting winch 82, extending the lifting jack 63, bringing its lower end into contact with the bottom surface 65 of the recess 64, and raising the steel pipe press-fitting device 7. 62 wheels and the running rail 61 are separated.
Next, the temporary casing 150 is gripped by the chuck device 75 of the steel pipe press-fitting device 7 and the lifting jack 63 is shortened. As a result, the steel pipe press-fitting device 7 is supported only by the temporary casing 150.

  Thereafter, as shown in FIG. 19, the steel pipe rotating hydraulic motor 76 of the steel pipe press-fitting device 7 is operated in a state where the temporary casing 150 is gripped by the chuck device 75 of the steel pipe press-fitting device 7. At the time of this motor operation, since the rotating cylinder 74 of the steel pipe press-fitting device 7 is fixed to the socket member 146 via the chuck device 75 and the temporary casing 150, the rotating cylinder 74 is in contact with the traveling rail 61 and the ground. Instead of rotating, instead, the elevating frame 73 and the base frame 71 of the steel pipe press-fitting device 7 rotate with respect to the traveling rail 61 and the ground. Thus, the direction of movement of the steel pipe press-fitting device 7 can be changed by rotating the steel pipe press-fitting device 7 with respect to the traveling rail 61 and the ground. In this embodiment, an example in which the steel pipe press-fitting device 7 is rotated 90 ° to the right is illustrated. However, the rotation direction and the rotation angle of the steel pipe press-fitting device 7 are not limited to this, and depending on the branching direction of the traveling rail 61. Can be set appropriately.

  When the steel pipe press-fitting device 7 is rotated with respect to the traveling rail 61 and the ground, the traveling direction of the steel pipe press-fitting device 7 coincides with the extending direction of the travel rail 61 laid on the bottom surface 65 ′ of the extension 64 ′ of the recess. As shown in FIG. 20, the third rail piece 143 arranged at the dividing portion 140 is removed. Further, the extending direction of the first and second rail pieces 141 and 142 arranged in the dividing portion 140 is made to coincide with the extending direction of the traveling rail 61 laid on the bottom surface 65 ′ of the extending portion 64 ′ of the recess. . Further, the third rail piece 143 is detachably laid between the first and second rail pieces 141 and 142 and the left traveling rail 61 laid on the bottom surface 65 of the recess 64. Accordingly, the third rail piece 143, the first rail piece 141, or the second rail piece 142 are arranged in order in the extending direction of the traveling rail 61 laid on the bottom surface 65 ′ of the extension 64 ′ of the recess. . In this arrangement, the outer flange and the inner flange of each rail piece are aligned with the outer flange 61b and the inner flange 61c of the traveling rail 61 laid on the bottom surface 65 ′ of the extension 64 ′ of the recess, respectively. Placed in.

Next, the elevating jack 63 is extended and its lower end is brought into contact with the bottom surface 65 of the recess 64, the chuck device 75 of the steel pipe press-fitting device 7 is loosened, and the steel pipe press-fitting device 7 is supported only by the elevating jack 63.
Next, the fixation between the temporary casing 150 and the socket member 146 is released, and the temporary casing 150 is pulled out from the rotating cylinder 74 of the steel pipe press-fitting device 7.

Next, the steel pipe press-fitting device 7 is placed on the third rail piece 143 through the traveling unit 62 by shortening the lifting jack 63 and lowering the steel pipe press-fitting device 7.
Next, the lifting jack 63 is further shortened so that the lifting jack 63 is separated from the bottom surface 65 of the recess 64. Thereafter, the steel pipe press-fitting device 7 is caused to travel using the wire rope 81 and the winding winch 82.

  In this way, the direction of the steel pipe press-fitting device 7 can be changed on the branching portion 145 of the traveling rail 61 to travel on the traveling rail 61.

  In particular, according to the present embodiment, the pair of left and right traveling rails 61 branch to the side in the middle, and the moving device 6 moves the socket member 146 erected from the bottom surface 65 of the recess 64 in the branching portion 145. In addition, the socket member 146 can be fixed to a temporary casing 150 (steel pipe) that is sandwiched in advance by the steel pipe press-fitting device 7. Thereby, in the branching part 145, the temporary casing 150 fixed to the socket member 146 can be sandwiched and rotated by the steel pipe press-fitting device 7, so that the steel pipe press-fit can be performed with a relatively simple configuration without using a crane or the like. The direction of travel of the device 7 can be changed.

  In addition, according to the present embodiment, the socket member 146 is placed on the bottom surface 65 of the recess 64 and fixed to the bottom of the traveling rail 61 or the bottom surface 65 of the recess 64, and the steel plate. And a circular pipe member 148 having a predetermined height extending in the vertical direction with its lower end fixed to 147. Thereby, the socket member 146 can be easily manufactured using a ready-made steel plate and a steel pipe.

DESCRIPTION OF SYMBOLS 1 Pile construction apparatus 2 Base machine 3 Leader 4 Swivel head 5 Rotating excavator 6 Moving apparatus 7 Steel pipe press-fitting apparatus 8 Steel pipe 9 Drilling hole 10 Muddy water treatment equipment 21 Crawler belt 22 Base machine main body 23 Turning apparatus 30, 31 Bracket 32 Hydraulic cylinder 33 Rod 34 Auxiliary crane 35 Boom 36 Lifting winch 37 Wire rope 38 Lifting tool 41 Slide block 51 Reverse rod (excavation rod)
51a Lower end 51b Upper end 52 Reverse bit (Drilling bit)
61 Traveling rail 61a Web 61b Flange (outer flange)
61c Flange (Inner flange)
62 Traveling unit 63 Elevating jack (leg)
64 Recess 64 'Extension portion 65, 65' Bottom surface 65a Steel plate 66, 66 'Side wall 67 Spacer member 71 Base frame 72 Steel pipe press hydraulic jack 73 Elevating frame 74 Rotating cylinder 75 Chuck device 76 Steel pipe rotating hydraulic motor 80 Traction device 81 Wire Rope 82 Winding winch 83 H-shaped steel material 101 Muddy water tank 102 Sand pump 103 Suction pump 104 Primary screen 105 Secondary screen 106 Cyclone screen 107 Residual soil tank 110, 111 Crane 115 Support layer 116 Tempered steel pipe 120 Hopper 121 Rooting part 122 Muddy water discharge Pump 123 Muddy water discharge pipe 130 Steel pipe pile 140 Dividing part 141 First rail piece 142 Second rail piece 143 Third rail piece 145 Branching part 146 Socket member 147 Steel plate (plate-like member)
148 Circular pipe member 150 Temporary casing (steel pipe)
151 Hole 152 Nut 153 Bolt

Claims (14)

A moving device that moves a steel pipe press-fitting device on the ground to press the steel pipe vertically into the ground,
A pair of left and right traveling rails that are laid on the bottom surface of a recess formed in advance by a predetermined depth from the ground, extend parallel to each other, and the distance between them is wider than the full width of the steel pipe press-fitting device;
A traveling unit having wheels that are detachably attached to the left and right sides of the steel pipe press-fitting device and that can roll on the traveling rail;
An extendable leg portion attached to the steel pipe press-fit device and capable of supporting the steel pipe press-fit device on the bottom surface of the recess,
Equipped with a,
The steel pipe press-fitting device is capable of press-fitting into the ground while sandwiching and rotating a cylindrical steel pipe from the outside,
The pair of left and right traveling rails branch to the side along the way,
The moving device further includes a socket member erected from the bottom surface of the recess in the branch portion,
The socket member can be fixed to a steel pipe sandwiched in advance by the steel pipe press-fitting device.
The mobile device of steel pipe indentation device. The socket member is mounted on the bottom surface of the recess, and is fixed to the lower portion of the traveling rail or the bottom surface of the recess, and the lower end is fixed to the plate member and extends in the vertical direction. The moving device for a steel pipe press-fitting device according to claim 1, comprising a circular pipe member having a predetermined height. The running rail is formed of a H-shaped steel flange is provided on both sides of the web, the mobile device of a steel pipe press-fitting apparatus according to claim 1 or claim 2. The moving device of the steel pipe press-fitting device according to claim 3 , wherein a flange on the side of the traveling rail facing the side wall of the concave portion is in surface contact with the side wall of the concave portion. The moving device of the steel pipe press-fitting device according to any one of claims 1 to 4 , further comprising a traction device that pulls the steel pipe press-fitting device. The traction device includes a wire rope whose one end is fixed to the front portion of the steel pipe press-fitting device, and a winding winch that is provided on the front end side of the pair of left and right traveling rails and winds the wire rope from the other end. The moving device of the steel pipe press-fitting device according to claim 5 . A moving device that moves a steel pipe press-fitting device on the ground to press the steel pipe vertically into the ground,
A pair of left and right traveling rails that are laid on the bottom surface of a recess formed in advance by a predetermined depth from the ground, extend parallel to each other, and the distance between them is wider than the full width of the steel pipe press-fitting device;
A traveling unit having wheels that are detachably attached to the left and right sides of the steel pipe press-fitting device and that can roll on the traveling rail;
An extendable leg portion attached to the steel pipe press-fit device and capable of supporting the steel pipe press-fit device on the bottom surface of the recess,
Using the mobile device comprising :
The steel pipe press-fitting device with the traveling unit attached is traveled to a predetermined position on the traveling rail,
By raising the steel pipe press-fitting device that has traveled to the predetermined position by extending the leg portion, the travel unit and the travel rail are separated,
The traveling unit is detached from the steel pipe press-fitting device,
A method of installing a steel pipe press-fitting device, wherein the steel pipe press-fitting device is lowered by shortening the leg portion, and the steel pipe press-fitting device is placed on the bottom surface of the recess between the pair of left and right traveling rails. The installation method of the steel pipe press-fitting apparatus according to claim 7 , wherein a spacer member is interposed in a gap between the steel pipe press-fitting apparatus placed on the bottom surface of the concave portion and the traveling rail at the predetermined position. The installation method of the steel pipe press-fitting device according to claim 7 or 8 , wherein the traveling rail is made of an H-shaped steel material having flanges on both sides of the web . The installation method of the steel pipe press-fit apparatus of Claim 9 with which the flange of the side facing the side wall of the said recessed part among the said travel rails surface-contacts with the side wall of the said recessed part . The installation method of the steel pipe press-fitting device according to any one of claims 7 to 10 , wherein the moving device further includes a traction device that pulls the steel pipe press-fitting device . The traction device includes a wire rope whose one end is fixed to the front portion of the steel pipe press-fitting device, and a winding winch that is provided on the front end side of the pair of left and right traveling rails and winds the wire rope from the other end. The installation method of the steel pipe press-fitting device according to claim 11 . The steel pipe press-fitting device is capable of press-fitting into the ground while sandwiching and rotating a cylindrical steel pipe from the outside,
The pair of left and right traveling rails branch to the side along the way,
The moving device further includes a socket member erected from the bottom surface of the recess in the branch portion,
The installation method of the steel pipe press-fitting device according to any one of claims 7 to 12 , wherein the socket member can be fixed to a steel pipe that is previously clamped by the steel pipe press-fitting device . The socket member is mounted on the bottom surface of the recess, and is fixed to the lower portion of the traveling rail or the bottom surface of the recess, and the lower end is fixed to the plate member and extends in the vertical direction. The steel pipe press-fitting device installation method according to claim 13, comprising a circular pipe member having a predetermined height .