JP2003166239A - Construction method of batter pile using rotary press-in steel pipe pile, construction device therefor, and staging for construction of batter pile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method of a batter pile using a rotary press-in steel pipe pile capable of pressing-in a steel pipe pile in a slant condition to the ground while rotating, a construction device and a staging for construction of the batter pile. <P>SOLUTION: The lower part of the lower level side of a slant staging 4 is put on a support member 8, and the upper part of the staging is made horizontal, a rotary press-in device 2 for steel pipe piles is put on the slant staging 4. Next, the rotary press-in steel pipe pile 1 is positioned in the rotary press-in device 2 and one end side of the rotary press-in device 2 is hung by a crane 6 in the state the lower part of the steel pipe pile is held by the rotary press-in device 2 and then, the support member 8 at the lower part of the slant staging 4 is removed. Then, the rotary press-in device 2 is hung down, and the rotary press-in device 2 and steel pipe pile 1 are slanted with regard to the ground 3. After that, the rotary press-in device 2 is driven to press-in the steel pipe pile 1 into the ground 3 while rotating. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for constructing a diagonal pile for constructing a diagonal pile made of a rotary press-fitted steel pipe pile press-fitted into the ground for supporting an upper structure such as a steel tower, and a diagonal structure. Regarding a pedestal for a pile construction.

[0002]

2. Description of the Related Art Conventionally, a steel pipe pile rotary press-fitting device such as an all-swivel all-casing excavator has been generally used to press-fit a steel pipe pile at right angles into the ground while rotating the steel pipe pile. It is not known to press-fit while rotating in an inclined state.

In particular, with respect to the steel pipe pile for rotary press-fitting having spiral blades or blades on the peripheral side surface of the steel pipe pile, the press-fitting construction of the steel pipe pile for rotary press-fitting is not performed while the steel pipe pile for rotary press-fitting is inclined. .

[0004]

There is a problem that it is difficult to set a steel pipe pile for rotary press-fitting in a fully swiveling all-casing excavator in an inclined state, and the steel pipe pile for rotary press-fitting is inclined with respect to the ground. In order to press-fit into the ground while maintaining the state, there is a problem that a device for supporting the all-swivel all-casing excavator in an inclined state is required.

As a result of various studies on the above problems, the present inventor set a steel pipe pile for rotary press-fitting into a steel pipe pile rotary press-fitting device such as an all-swivel all-casing excavator by using an inclined mount or a mount. After that, it was found that by supporting the all-swivel all-casing excavator in an inclined state, the steel pipe pile for rotational press-fitting can be rotationally press-fitted in an inclined state with respect to the ground, and the present invention was completed.

According to the present invention, a steel pipe pile is used as a ground (or horizontal surface).
It is an object of the present invention to provide a method for constructing a diagonal pile, a construction device therefor, and a mount for constructing a diagonal pile, which can be press-fitted while being rotated while being inclined.

[0007]

In order to solve the above problems, in the method for constructing an oblique pile according to claim 1, after the rotary press-fitting steel pipe pile 1 is gripped by the steel pipe pile rotary press-fitting device 2, the steel pipe pile rotary press-fitting is performed. By holding the device 2 in a tilted state, the steel pipe pile for rotary press-fitting is held in a tilted state, and then the steel pipe pile rotary press-fitting device 2 is driven to rotate the rotary press-fitted steel pipe pile 1 to the ground 3 in a tilted state. It is characterized by press-fitting while doing.

In the method for constructing the inclined pile according to claim 2, the lower part of the inclined mount 4 having the inclined support part 7 on the low level side is placed on the support member 8, and the upper part of the inclined mount 4 is set horizontally. The tilted mount 4 is placed on the ground 3 in such a state that the lower part of the steel pipe pile rotary press-fitting device 2 is mounted on the tilted mount 4 with the lower part engaged, and then the rotary press-fitted steel pipe is mounted on the steel pipe pile rotary press-fitting device 2. In the state where the pile 1 is built and the lower part of the steel pipe pile 1 for rotary press-fitting is gripped by the steel pipe pile rotary press-fitting device 2, one end side of the steel pipe pile rotary press-fitting device 2 is suspended by a crane 6 and the inclined mount 4 The lower support member 8 is removed, then the steel pipe pile rotary press-fitting device 2 is hung, the steel pipe pile rotary press-fitting device 2 and the rotary press-fitting steel pipe pile 1 are tilted with respect to the ground 3, and then the steel pipe pile rotation is performed. Drive the press-fitting device 2 to rotate the press-fitted steel pipe pile 1 Characterized by press-fitting while rotating the ground 3.

Further, in the method for constructing a diagonal pile according to claim 3, the lower portion of the steel pipe pile rotary press-fitting device 2 is mounted on a pair of pedestals 5 arranged at intervals on a seat plate 18 having a steel pipe pile insertion hole 9. After being placed in the engaged state, the rotary press-fitting steel pipe pile 1 is built in the steel pipe pile rotary press-fitting device 2, and the lower part of the rotary press-fitting steel pipe pile 1 is gripped by the steel pipe pile rotary press-fitting device 2, One end side of the pile rotary press-fitting device 2 is suspended by a crane 6 to remove one pedestal 5, and then the steel pipe pile rotary press-fitting device 2 is hung down to make the steel pipe pile rotary press-fitting device 2
And tilting the steel pipe pile 1 for rotary press-fitting with respect to the ground 3,
After that, the steel pipe pile rotary press-fitting device 2 is driven, and the steel pipe pile 1 for rotary press-fitting is press-fitted into the ground 3 while rotating.

Furthermore, in the oblique pile construction device according to the fourth aspect, the inclined support portion 7 inclined from one end side to the other end side of the upper portion is provided, and the inclination provided with the steel pipe pile insertion hole 9 is provided. The gantry 4 is arranged on the ground 3, and the inclined gantry 4
To engage the lower part of the steel pipe pile rotary press-fitting device 2,
It is characterized in that the steel pipe pile rotary press-fitting device 2 is placed in an inclined state.

In addition, in the oblique pile construction device according to the fifth aspect, one side lower part of the steel pipe pile rotary press-fitting device 2 is engaged and mounted on the frame 5 arranged on the ground 3, and the steel pipe pile rotary press-fitting device is installed. The device is arranged in a tilted state.

Further, in the invention of claim 6, in the oblique pile construction device according to claim 4 or 5, the steel pipe pile rotary press-fitting device 2 and the crane 6 supporting the steel pipe pile rotary press-fitting device are the steel pipe pile rotary press-fitting devices. It is characterized in that it is engaged by a reaction force transmitting member 10 for transmitting the reaction force of the device 2 to the crane 6 and supports the reaction force acting on the steel pipe pile rotary press-fitting device 2.

Further, in the mount for oblique pile construction according to claim 7, there is provided a steel pipe pile rotary press-fitting device used for rotationally press-fitting the oblique pile 11 composed of the rotary press-fitting steel pipe pile 1 into the ground 3 in an inclined state. In a tilting mount for supporting, a connecting member 13 having a through hole 9 for inserting a steel pipe pile is arranged and fixed to the tilting support 12 over a pair of tilting supports 12 arranged in parallel at intervals. An inclined mount 5 for supporting the steel pipe pile rotary press-fitting device is configured, and an engaging portion 15 for engaging with a lower portion of the steel pipe pile rotary press-fitting device 2 is provided at each corner of the inclined mount 5. Is characterized by.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be specifically described below with reference to the drawings. First, the inclined mount of the first embodiment used in the construction method of the present invention will be described with reference to FIGS. 7 and 8. 7 and 8
FIG. 7 is a side view and a plan view showing the tilt mount 4 of the present invention, FIG. 7 is a side view and a plan view showing the tilt mount 4, and FIG. It is a figure.

As shown in FIG. 8, a substantially triangular steel side plate 21 is provided on the upper surface of a rectangular steel bottom plate 20 such as a rectangle.
Then, a face plate 21 having a substantially right triangular shape whose bottom side has a length substantially the same as the length of the long side of the rectangular lower face plate 20,
The rectangular lower surface plate 20 is vertically arranged at the center and both sides in the width direction (front-back direction) of the upper surface of the rectangular lower surface plate 20 so as to extend vertically, and three parallel plates are placed at equal intervals. Steel reinforcing vertical ribs 22 that are fixed by welding and that extend in the front-rear direction between the face plates 21 are arranged at intervals in the left-right direction and are fixed to each face plate 21 and the lower face plate 20 by welding. Steel plates having different heights are arranged so that the upper portions of the vertical ribs 22 are at substantially the same level along the inclination of the face plate 21.

A rectangular steel top plate 23 is placed over the face plate 21, and the peripheral side portion of the steel top plate 23 is fixed to the face plate 21 and the vertical reinforcing ribs 22 by welding. Thus, the inclined support base 12 in which the lower plate 20, the face plate 21, the reinforcing vertical ribs 22 and the upper plate 23 are firmly integrated is configured.

As shown in FIG. 7, a steel plate top plate 13a having a rectangular shape and having a through hole 9 for inserting a steel pipe pile in the center is formed over a pair of the inclined supports 12 arranged in parallel at a distance. The connecting member 13 is placed, and the outer peripheral side or the lower surface of the connecting member 13 is fixed to the upper surface plate 13a of the tilt support 12 by welding.
Are firmly connected to each other to form the inclined mount 4.

At the four corners of the upper surface plate 13a of the inclined mount 4, along the periphery of the upper surface plate 13a, there are fixed lateral shift preventing members 24 made of steel plate. The member 24 serves to prevent lateral displacement of the leg seat 25 of the steel pipe pile rotary press-fitting device 2 such as an all-swivel all-casing excavator, and, as shown by a chain double-dashed line in FIG.
After the 5 is placed, in order to prevent its upward movement or lateral displacement, another piece of the later-installed displacement preventing member 26 made of an L-shaped steel plate is placed so that one side is close to the upper surface of the leg seat 25. It is fixed to the upper surface plate 13a by welding. The top plate 13a
The offset support member 24 and the like constitute the inclined support portion 7. The engaging portion 15 is constituted by the upper surface of the upper surface plate 13a and the stopper 24 (or the stopper 26 attached to the stopper 24). The tilt angle of the tilt base 4 may be appropriately set within a range of about 3 to 25 degrees.

Next, a method of constructing a case where the steel pipe pile 1 for rotary press-fitting is tilted to the ground 3 by using the inclined mount 4 with reference to FIGS. 1 and 2, will be described. And a construction device (a structure explanation of the fully swiveling all-casing excavator 2 as an example will be described later).

First, as shown in FIG. 1A, a supporting member 8 such as a rectangular parallelepiped having a box-shaped cross section made of a steel plate is used as a pillow on the ground 3 by appropriately using a crane 6 such as a crawler crane.
To place. The supporting member 8 is a supporting member 8 such as one having a length that can be arranged over the lower portion of each of the tilting supports 12 on the low level side in the tilting base 4, and the support member 8 has one end side of the tilting base 4. The lower level side is placed so that the upper surface of the inclined mount 4 is horizontal.

Next, the leg seats 25 are provided inside the shift preventing members 24 at the four corners on the upper surface of the horizontal inclined mount 4.
Is positioned (see FIG. 7) so that the lower leg seat 25 of the steel pipe pile rotary press-fitting device 2 including an all-swivel all-casing excavator
In order to prevent the footrest 25 of the all-swivel all-casing excavator from slipping off, a post-movement slip-off preventing member 26 is fixed to the inclined mount 4 (see FIGS. 3 and 4), and a steel pipe pile rotary press-fitting is performed. Engagement of the device 2 and the inclined mount 4 is attempted.

Then, as shown in FIG. 1 (b), the steel pipe pile rotary press-fitting device 2 consisting of the all-swivel all-casing excavator in this state suspends and supports the steel pipe pile 1 for rotary press-fitting with a crane 6. As shown in (c) (and FIG. 6) of FIG. 1, the lower portion of the steel pipe pile 1 for rotary press-fitting having a spiral blade or a spiral blade 14 at the lower end is attached to the spiral collar 27 in the steel pipe pile rotary press-fitting device 2. On the crane 6
While lowering the rotary press-fitting steel pipe pile 1 supported by the locking hook in FIG.
After passing the spiral blade portion 14 of the steel pipe pile 1, the steel pipe pile 1
Is held and held by the chuck 28 in the steel pipe pile rotary press-fitting device 2.

Next, as shown in FIG. 1 (d), the crane 6 is used to suspend one side (one end side) of the steel pipe pile rotary press-fitting device 2 located on the low level side of the inclined pedestal 4. The load of the steel pipe pile rotary press-fitting device 2 is applied to the high level side of the slope mount 4 by the leg seat 25 on the other end side of the pile rotary press fit device 2, and the low level side of the slope mount 4 is floated from the ground 3 to support the above. After removing the member 8, as shown in FIG. 2 (e), the steel pipe pile rotary press-fitting device 2 is hung down, one end side of the inclined mount 4 is seated on the ground 3, and the steel pipe pile rotary press-fitting device 2 and The steel pipe pile for rotary press-fitting 1 supported by this is made to be inclined with respect to the ground 3 or the horizontal plane.
As a result, the steel pipe pile rotary press-fitting device 2 and the rotary press-fitting steel pipe pile 1 are arranged in a state of being inclined with respect to the ground 3 or the horizontal plane.

Next, one end of the steel reaction bar 30 is connected to one end of the steel pipe pile rotary press-fitting device 2 by a horizontal shaft 31, and the tip of the steel reaction bar 30 is connected to the vehicle body 3 of the crane 6.
The crane 6 receives the rotational reaction force when the steel pipe pile rotary press-fitting device 2 rotates the rotary press-fitting steel pipe pile 1 by engaging with the steel pipe pile 2. In the case of this embodiment, when the base end side of the steel reaction force bar 30 is at a lower level than the ground surface, the ground 3 on the lower surface of the steel reaction force bar 30 is appropriately dug down. The tip of the steel reaction force bar 30 may be connected to a bracket fixed to the vehicle body 32 of the crane 6 by a horizontal axis. (The illustration is omitted.)

In this state, as shown in FIG.
The steel pipe pile rotary press-fitting device 2 is driven, and the steel pipe pile for rotary press-fitting 1 is rotationally press-fitted into the ground 3 while applying the top load of the steel pipe pile rotary press-fitting device 2. The above-mentioned load needs to be added in order for the spiral blade 14 to penetrate into the ground 3. Moreover, the inclination angle of the steel pipe pile rotary press-fitting device 2 is actuated to adjust the inclination angle of the steel pipe pile rotary press-fitting device 2, thereby correcting or adjusting the inclination angle of the rotary press-fitting steel pipe pile 1. You can

As for the above-mentioned load, the propelling force by the blade does not occur until the spiral blade 14 enters below the ground surface, so the load of the weight of the steel pipe pile rotary press-fitting device 2 is required at the initial stage of penetration. However, after the intrusion, it depends on the N value of the ground, but it depends on the N value of the ground.
It is also possible to carry out by applying only a fixed top load or further load.

When the rotary press-fitting steel pipe pile 1 is inclined and press-fitted, the jack 34 of the steel pipe pile rotary press-fitting device 2 is expanded and contracted to adjust the inclined penetration angle of the rotary press-fitting steel pipe pile. You may do it.

In this embodiment, the steel pipe pile rotary press-fitting device 2
Thus, while applying a constant loading load to the rotary press-fitting steel pipe pile 1, as shown in (g) of FIG. 2, the rotary press-fitting steel pipe pile 1 is rotary press-fitted to a predetermined depth to complete the press-fitting. It was Although not shown, the steel pipe pile for rotary press-fitting 1
A new steel pipe may be fixed to the upper end of the by welding or the like, and the steel pipe pile for rotary press-fitting reaching a predetermined depth may be press-fitted. In addition, as shown in (h) of FIG. 2, when pulling out the rotary press-fitting steel pipe pile 1 press-fitted into the ground 3, while rotating the rotary press-fitting steel pipe pile 1 in reverse by the steel pipe pile rotary press-fitting device 2. When the pulling force is applied, the rotary press-fitting steel pipe pile 1 can be easily pulled out.

Next, the structure of the steel pipe pile rotary press-fitting device (all-swivel all-casing excavator) 2 will be described with reference to FIG.
A cylinder 35 of an angle adjusting jack 34 of a hydraulic type or the like having a leg seat 25 in the lower part is fixed to the four corners of the, and the leg seat 25 is attached to the tip end portion of the movable piston 36 of the jack 34 via a ball joint 19. It is installed.

A plurality of (four) lifting jacks 38 for raising and lowering the lifting frame 37 are erected on the base frame 33. By shortening the lifting jacks 38, the rotary press-fitting steel pipe pile 1 is installed. It is configured to press fit. A chuck collar lifting jack 39 is provided on the lifting frame 37. Further, a bearing 40 is provided inside the lower portion of the elevating frame 37, and a rotating body 42 having an inner peripheral tapered surface 41 whose diameter is enlarged upward is provided via the bearing 40. An annular outer tooth 43 is provided on the outer circumference of the rotating body 42, and the outer tooth 43 meshes with a driving gear 46 of a rotating body driving hydraulic motor 44 fixed to the elevating frame 37 via an intermediate gear 62. is doing.

Inside the rotating body 42, a chuck collar 2 for holding and rotating the steel pipe portion 47 of the rotary press-fitted steel pipe pile 1.
7 is provided. A collar support block 48 is fixed to the chuck collar 27 by a bolt 48a, and a tapered surface 49 having an enlarged diameter is formed on the outer surface of the collar support block 48 in order to impart a wedge function to the collar support block 48. The wedge mechanism 50 is configured by slidably contacting the tapered surface 49 with the inner peripheral tapered surface 41 of which the upper portion of the rotating body 42 has an enlarged diameter.

As shown in FIG. 6, the chuck collar 27 has concave grooves 5 having the same pitch as the spiral blades 14 of the rotary press-fitted steel pipe pile 1.
1 is formed. Then, the rotary press-fitting steel pipe pile 1 is hung from above the steel pipe pile rotary press-fitting device 2, the spiral blade 14 is guided along the concave groove 51, and the rotary press-fitting steel pipe pile 1 is screwed into the spiral press-fitting steel pipe pile 1 by rotating the rotary press-fitting steel pipe pile 1 to rotate the spiral blade 14. After passing through the part of the chuck collar 27, the pile gripping diameter adjusting jig 52 at the tip of the chuck collar 27 and the high friction material provided on the pile gripping diameter adjusting jig 52 are pressed and gripped for rotational press fitting.

Explaining further, the chuck collar 27
Are arranged at equal intervals in the circumferential direction (for example, 8 places). The chuck collar 27 is constructed by vertically attaching a chuck main body portion 53 having a box-shaped cross section, and a front side plate 54 of the chuck main body 53 to which a box-shaped cross section chuck bracket portion 55 including upper and lower plates and both side plates is fixed. It The chuck brackets 55 are provided vertically in multiple stages while vertically shifting the positions of the respective chuck collars 27 so that the entire chuck collars 27 are equidistant in the circumferential direction. By the continuous gap of,
The concave groove 51 having the same pitch as the spiral blade 14 of the rotary press-fitted steel pipe pile 1 is formed.

As described above, even if the steel pipe pile rotary press-fitting device 2 is tilted within the range of the above-mentioned inclination angle, the engagement state between the steel pipe pile rotary press-fitting device 2 and the inclined mount 4 is maintained.
The rotational reaction force of the steel pipe pile rotary press-fitting device 2 is the steel reaction force bar 30.
It can be transmitted to the crane 6 via the reaction force transmission member 10 consisting of. Moreover, the inclination angle of the steel pipe pile rotary press-fitting device 2 can be appropriately adjusted by adjusting the expansion and contraction amounts of the angle adjusting jacks 34 arranged at the four corners of the steel pipe pile rotary press-fitting device 2. The jack 3
Since the leg seat 25 is attached to the tip end of the movable piston 36 of No. 4 through the ball joint 19 which has a substantially spherical portion and the receiving seat has a hemispherical receiving portion, the inclined mount 4
The leg seat 25 can be placed in a stable state.

After constructing the first rotary press-fitting steel pipe pile 1 as described above, a lower portion of a new steel pipe is fixed to the upper end of the rotary press-fitting steel pipe pile by welding or the like so that a predetermined size is obtained. Pile 1 consisting of steel pipe pile 1 for rotary press-fitting
6 may also be constructed.

After the rotary press-fitting of the steel pipe pile 1 for rotary press-fitting to a predetermined position is carried out, the steel pipe pile rotary press-fitting device 2 and the inclined mount 4 are respectively moved to new construction sites, and the same procedure as above is followed. , The rotary press-fitting steel pipe pile 1 is rotary press-fitted.

In the case of the above-described embodiment, the inclined mount 4 is used, and the lower leg seat 25 of the steel pipe pile rotary press-fitting device 2 and the engagement between the inclined mount 4 and the shift stopper 24 which is fixed to the inclined mount 4 in advance,
The lower leg portion 25 of the steel pipe pile rotary press-fitting device 2 is locked by the later-installed slip prevention member 26, and the steel pipe pile rotary press-fitting device 2
However, as in the next embodiment, without using the inclined mount 4,
This configuration will be described because the steel pipe pile rotary press-fitting device 2 can be tilted and the steel pipe pile rotary press-fitting device 2 can be prevented from shifting.

FIGS. 9 to 13 show a pair of pedestals in which, instead of the inclined pedestal 4 of the above-described embodiment, the stopper members 24 are provided in the same direction at both upper ends of the steel pillow 17 having a substantially rectangular parallelepiped shape. 5 and a pair of rectangular steel plate seat plates 18 that are mounted in a state of laterally immovably engaging the pair of pedestals 5 with each other. A through hole 9 for inserting a steel pipe pile is provided, and a shift preventing member 24 for preventing lateral movement of each pedestal 5 is fixed to each of the left and right sides of the seat plate 18 by welding or the like. The shift prevention member 24 includes shift prevention plates 24a to 24c arranged outside the front, rear, left, and right of the gantry 5. Specifically, the shift prevention members 24 are arranged in parallel in the front-rear direction and fixed. It is composed of a front shift prevention plate 24a, a rear shift prevention plate 24b, and a side shift prevention plate 24c. More specifically, the configuration of the pedestal 5 will be described. In the pedestal 5, steel disc-shaped seat plates 56 are fixed by welding to both ends of the steel pillow 17 in the longitudinal direction. A leg portion 58 of the shift preventing member main body 57 having a semicircular portion and a substantially U shape in a plan view and having a substantially L-shaped cross section is fixed by welding to the upper surface of the upper portion of the leg portion 58, and the leg portion 58 faces inward. A flange 59 is arranged. The diameter of the semicircular portion is
The diameter is set to be slightly larger than the diameter of the leg portion 25 of the steel pipe pile rotary press-fitting device 2, and a steel bracket 60 is fixed by welding to the upper surface of each tip of the U-shaped portion so as to face each other. A through hole 61 for pin insertion is provided in the bracket 60, and a detachable pin 62 is provided across the through hole 61 for pin insertion of each bracket 60 to configure the engaging portion 15.

When the leg seat 25 of the steel pipe pile rotary press-fitting device 2 is locked to the mount 5, the leg seat 25 is placed with the pin 62 removed (note that the mount 18 or the steel pipe pile is rotated). After the side of the press-fitting device 2 is appropriately moved and engaged, the pin 62 is installed. The pin 62, the leg portion 58, and the upper flange 59 serve to prevent the steel pipe pile rotary press-fitting device 2 from shifting laterally and upward.

When the steel pipe pile rotary press-fitting device 2 is installed by using this gantry 5, as shown in FIG. 9, the left and right slip stoppers of the steel seat plate 18 placed on the ground 3 are secured. In a state in which each of the mounts 5a and 5b is placed on the seat plate 18 in parallel at a distance so as to be located in 24 and the pin 61 is removed,
The leg seat 25 of the steel pipe pile rotary press-fitting device 2 is arranged and placed in the shift-preventing member main body 57, and the pin 61 is mounted to engage the gantry 5 and the steel pipe pile rotary press-fitting device 2. (See FIG. 11 and FIG. 12a)

Next, as in the above embodiment, as shown in FIGS. 12 (b) to 12 (d), the steel pipe pile 1 for rotary press-fitting is built in the steel pipe pile rotary press-fitting device 2 comprising an all-swivel all-casing excavator. At the same time, after the steel pipe pile rotary press-fitting device 2 is gripped, one side of the steel pipe pile rotary press-fitting device 2 is lifted by the crane 6 and the pin 61 of one of the mounts 5b is removed to remove one of the mounts 5b or one of the mounts. After removing the pin 61 of 5b, the steel pipe pile rotary press-fitting device 2 is suspended and the pedestal 5b is removed. It should be noted that the one pedestal 5b which will be removed later may be provided with a shift stopper having a shift preventing function only in the lateral direction, and vertical engaging means (pin 61 or inward flange) may be provided. The pedestal 5b having the shift stopper 24 not provided may be used.

Then, as in the above embodiment, as shown in FIG. 13 (e), the steel pipe pile rotary press-fitting device 2 is seated on one side on the seat plate 18, and the reaction force transmission consisting of the steel reaction force bar 30 is transmitted. The member 10 is connected to the steel pipe pile rotary press-fitting device 2 by the horizontal shaft 31, and the tip of the reaction bar 30 is engaged with the vehicle body of the crane 6.

Next, as in the above-described embodiment, as shown in (f) to (g) of FIG. 13, the steel pipe pile rotary press-fitting device 2 is driven to rotary press-fit the steel pipe pile 1 for rotary press-fitting into the ground 3. Install.

In the above-mentioned embodiment, the inclined mount 4 is placed on the ground 3, but the inclined mount 4 may be placed on the support base made of steel plate. Instead of the shift preventing means shown in the inclined mount 4, a shift preventing means shown in FIG. 9 or later may be adopted, and instead of the shift preventing means shown in FIG. You may make it employ | adopt the shift stop means adopted as said.

In the above-mentioned embodiment, the steel pipe pile rotary press-fitting device 2 consisting of a wedge-type all-swivel all-casing excavator is shown. As the steel pipe pile rotary press-fitting device 2, a band type steel pipe pile 1 for rotary press-fitting is used. The steel pipe pile rotary press-fitting device for gripping the steel pipe pile may be used, or other appropriate steel pipe pile rotary press-fitting device may be used.

[0046]

According to the invention of claim 1, the steel pipe pile for rotary press-fitting is held by the steel pipe pile rotary press-fitting device, and the steel pipe pile rotary press-fitting device is held in an inclined state, whereby the rotary press-fitting is performed. The steel pipe pile for rotary press-fitting is press-fitted into the ground in a tilted state, so it is possible to easily press-fit the steel pipe pile for rotary press-fitting into the ground in a tilted state. It is possible to easily construct a diagonal pile consisting of. Further, since the steel pipe pile rotary press-fitting device such as the all-swivel all-casing excavator is used, the advantage of this device, that is, the construction of low noise and low vibration can be obtained.

Further, as in claim 2 or claim 3,
For mounting and rotary press-fitting the steel pipe pile rotary press-fitting device with a support member placed under the tilted mount and temporarily leveling the tilted mount or temporarily using a pair of mounts. After building the steel pipe pile, the steel pipe pile rotary press-fitting device is supported by a crane, and the supporting member or one of the mounts is removed, and the product is simply hung down to make the steel pipe pile rotary press-fitting device and the rotary press-fitting steel pipe pile tilted. Can be installed in
Therefore, the steel pipe pile for rotational press-fitting can be easily rotationally press-fitted into the ground in a tilted state.

According to a fourth aspect of the present invention, the oblique pile construction device of the present invention is provided with the existing slant pile construction base including the inclined support portion and the through hole for inserting the steel pipe pile. Since it has a simple structure that is simply added to a steel pipe pile rotary press-fitting device such as a swiveling all-casing excavator and a crane, it is possible to easily and inexpensively configure a device for oblique pile construction, which is also easy to construct. is there.

Further, the invention of claim 5 is the steel pipe pile insertion hole 9
Of the steel pipe pile rotary press-fitting device 2 is engaged and mounted on the gantry 5 arranged on the seat plate 18 having the structure, and the steel pipe pile rotary press-fitting device is arranged in an inclined state. Since it is a diagonal pile construction device, there is an effect that the diagonal pile construction device can be easily configured at low cost and the construction is easy.

According to a sixth aspect of the present invention, the steel pipe pile rotary press-fitting device and the crane supporting the steel pipe pile press-fitting device are engaged by a reaction force transmitting member for transmitting the reaction force of the steel pipe pile rotary press-fitting device to the crane. When the reaction force acting on the steel pipe pile rotary press-fitting device is supported, the rotational reaction force of the steel pipe pile rotary press-fitting device 2 can be easily supported by the crane with a simple configuration.

According to the seventh aspect of the present invention, it is possible to easily make a full turn simply by disposing a connecting member having a through hole for inserting a steel pipe pile on the inclined support bases arranged in parallel at a distance and fixing the connecting member to the inclined support bases. It is possible to manufacture an inclined pedestal having a simple structure capable of supporting a steel pipe pile rotary press-fitting device such as an all-casing excavator in an inclined state. Further, since the engaging portion for engaging with the steel pipe pile rotary press-fitting device such as the all-swivel all-casing excavator is provided at the corner of the inclined support base, the steel pipe pile rotary-press-fitting device such as the all-swivel all-casing excavator can be easily installed. The lower part can be engaged to support the steel pipe pile rotary press-fitting device in a stable state. Also, even if the tilted support is tilted,
Engagement with the all-swivel all-casing excavator can be made firm. Further, it is possible to easily support the steel pipe pile rotary press-fitting device used for rotationally press-fitting the oblique pile made of the rotary press-fitting steel pipe pile in the inclined state in the ground.

[Brief description of drawings]

1A to 1D are schematic side views showing a procedure for constructing a steel pipe pile for rotary press-fitting by carrying out a method for constructing a diagonal pile according to the present invention.

2 (f) to (g) are schematic side views showing a procedure following that of FIG. 1, and (h) is a schematic side view when pulling out a steel pipe pile for rotary press-fitting.

FIG. 3 is a side view showing a state in which a steel pipe pile rotary press-fitting device composed of an all-swivel all-casing excavator is installed in a tilted state in a tilted state, and a reaction force bar is arranged.

FIG. 4 is a side view showing a part of FIG. 5 in an enlarged manner.

FIG. 5 is a plan view showing a state in which the tip of a steel reaction bar connected to a steel pipe pile rotary press-fitting device is engaged with a crane.

FIG. 6 is a vertical cross-sectional side view showing the structure of a full swing all casing excavator.

7A and 7B are views showing an inclined mount, in which FIG. 7A is a plan view and FIG. 7B is a side view.

8A and 8B show an inclined support base, FIG. 8A is a plan view, and FIG. 8B is a side view.

FIG. 9 is a plan view showing a state in which a gantry of another form is arranged on the ground in parallel with a space.

FIG. 10 shows a state in which the steel pipe pile rotary press-fitting device is placed on the mount shown in FIG. 9, the steel pipe pile rotary press-fitting device is suspended by a crane, and the other stand is removed to suspend the steel pipe pile rotary press-fitting device. It is a side view which shows the one end side of.

FIG. 11 is a view showing a relationship between a gantry of another form and a leg seat of a steel pipe pile rotary press-fitting device, in which (a) is a plan view,
(B) is a side view.

12 (a) to (d) are schematic side views showing a procedure for constructing a steel pipe pile for rotary press-fitting by carrying out the method for constructing a diagonal pile of the present invention.

13 (f) to (g) are schematic side views showing a procedure following that of FIG. 12, and (h) is a schematic side view when pulling out a steel pipe pile for rotary press-fitting.

[Explanation of symbols]

1 Steel pipe pile for rotary press-fitting 2 Full swing all casing excavator 3 ground 4 inclined mount 5 mounts 6 cranes 7 Inclined support 8 Support members 9 Steel pipe pile insertion hole 10 Reaction force transmission member 11 oblique pile 12 Inclined support 13 Connection member 13a Top plate 14 spiral blades (or spiral wings) 15 Engagement part 16 oblique pile 17 Steel pillow 18 seat 19 ball joint 20 Rectangular bottom plate 21 Face plate (side plate) 22 Reinforcing ribs 23 Top plate 24 Locking member 25 Steel pipe pile rotary press-fitting device footrest 26 Retrofit slip prevention member 27 spiral color 28 Chuck 29 articles 30 Steel reaction force bar 31 Horizontal axis 32 car body 33 base frame 34 Angle adjustment jack 35 cylinders 36 Movable piston 37 Lifting frame 38 Lifting jack 39 Chuck collar lifting jack 40 bearing 41 Tapered inner circumference 42 rotating body 43 external teeth 44 Hydraulic motor for rotating body 45 intermediate gear 46 drive gear 47 Steel Pipe 48 color support block 48a bolt 49 Tapered surface 50 wedge mechanism 51 groove 52 Pile gripping diameter adjustment jig 53 Chuck body 54 front plate 55 Chuck bracket part 56 seat plate 57 Locking member body 58 legs 59 Inward flange 60 bracket 61 pin insertion hole 62 Intermediate gear

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shuji Wada             1-25-8 Higashiikebukuro, Toshima-ku, Tokyo TEPCO             Transmission and Substation Technology Center Co., Ltd. (72) Inventor Hiroshi Sakamoto             1-25-8 Higashiikebukuro, Toshima-ku, Tokyo TEPCO             Transmission and Substation Technology Center Co., Ltd. (72) Inventor Akira Komatsu             2-6-3 Otemachi, Chiyoda-ku, Tokyo New Japan             Steelmaking Co., Ltd. (72) Inventor Takayoshi Fukumura             2-6-3 Otemachi, Chiyoda-ku, Tokyo New Japan             Steelmaking Co., Ltd. (72) Inventor Koji Toyofuku             2-6-3 Otemachi, Chiyoda-ku, Tokyo New Japan             Steelmaking Co., Ltd. F-term (reference) 2D050 AA06 CB23 EE04 EE14

Claims (7)

[Claims] 1. A steel pipe pile for rotary press-fitting is held in an inclined state by holding the rotary press-fitting steel pipe pile 1 by a steel pipe pile rotary press-fitting device 2 and then making the steel pipe pile rotary press-fitting device 2 tilt. Then, a method for constructing a diagonal pile, characterized in that the steel pipe pile rotary press-fitting device 2 is then driven to press the rotary press-fit steel pipe pile 1 into the ground 3 while rotating the press-fitted steel pipe pile 1 in an inclined state. 2. The lower part of the inclined mount 4 having the inclined support part 7 on the low level side is placed on a support member 8 so that the inclined mount 4 is
Of the steel pipe pile rotary press-fitting device 2 after placing the inclined mount 4 on the ground 3 in a state where the upper part of the steel pipe is horizontal and mounting the lower part of the steel pipe pile rotary press-fitting device 2 on the tilt mount 4 The steel pipe pile 1 for rotary press-fitting is built in the steel pipe pile 1 for rotary press-fitting.
With the lower part of the gripped by the steel pipe pile rotary press-fitting device 2,
One end of the steel pipe pile rotary press-fitting device 2 is suspended by a crane 6 to remove the supporting member 8 below the inclined mount 4, and then the steel pipe pile rotary press-fitting device 2 is hung down.
The steel pipe pile rotary press-fitting device 2 and the rotary press-fitting steel pipe pile 1 are inclined with respect to the ground 3, and then the steel pipe pile rotary press-fitting device 2 is driven to press-fit the rotary press-fitting steel pipe pile 1 into the ground 3 while rotating it. A method of constructing a diagonal pile, which is characterized in that. 3. The steel pipe after the lower portion of the steel pipe pile rotary press-fitting device 2 is mounted on a pair of pedestals 5 arranged at intervals on a seat plate 18 having a steel pipe pile insertion hole 9, and then the steel pipe is mounted. The rotary press-fitting steel pipe pile 1 is built in the pile rotary press-fitting device 2, and the lower end of the steel pipe pile 1 for rotary press-fitting is gripped by the steel pipe pile rotary press-fitting device 2, and one end side of the steel pipe pile rotary press-fitting device 2 is mounted by the crane 6. One-side hanging to remove one of the mounts 5, then the steel pipe pile rotary press-fitting device 2 is hung down, the steel pipe pile rotary press-fitting device 2 and the rotary press-fitting steel pipe pile 1 are inclined with respect to the ground 3, and then the steel pipe A method for constructing a diagonal pile, characterized in that the pile press-fitting device 2 is driven to press-fit the steel pipe pile 1 for rotary press-fitting into the ground 3 while rotating the pile. 4. An inclined pedestal 4 provided with an inclined support portion 7 inclined from one end side to the other end side of the upper part and provided with a steel pipe pile insertion hole 9 is arranged on the ground 3, and its inclination A diagonal pile construction device, characterized in that the lower part of the steel pipe pile rotary press-fitting device 2 is engaged with the gantry 4, and the steel pipe pile rotary press-fitting device 2 is placed in an inclined state. 5. The steel pipe pile rotary press-fitting device is tilted by mounting one side lower part of the steel pipe pile rotary press-fitting device 2 on a pedestal 5 arranged on a seat plate 18 having the steel pipe pile inserting hole 9. An oblique pile construction device, which is arranged in a state. 6. The steel pipe pile rotary press-fitting device 2 and a crane 6 supporting the steel pipe pile rotary press-fitting device 2 are engaged by a reaction force transmission member 10 for transmitting a reaction force of the steel pipe pile rotary press-fitting device 2 to the crane 6. And a reaction force acting on the steel pipe pile rotary press-fitting device 2 is supported by the oblique pile construction device according to claim 4 or 5. 7. An inclined mount for supporting a steel pipe pile rotary press-fitting device used for rotationally press-fitting a diagonal pile 11 made of a steel pipe pile 1 for rotary press-fitting into a ground 3, in an inclined state. A connecting member 13 having a through hole 9 for inserting a steel pipe pile is arranged over a pair of inclined support bases 12 arranged in parallel and fixed to the inclined support base 12, and an inclined mount 5 for supporting a steel pipe pile rotary press-fitting device. And the inclined mount 5
An engaging portion 15 for engaging with a lower portion of the steel pipe pile rotary press-fitting device 2 is provided at each corner of the oblique pile construction stand.