JPH10306445A - Steel-pipe pile mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a steel-pipe pile at a specified place with high accuracy by removing a jig for hanging at the time of temporary fixing and dropping the steel-pipe pile by a suspension type pile fixture mounted on the steel-pipe pile through a PC steel bar while the pile fixture is fixed onto an upper cradle through a support material such as a tommy bar. SOLUTION: A steel-pipe pile 5 is dropped into a pile pit 3 from the upper section of an upper cradle 2, a support material 8 such as a tommy bar is crossed over the top face of the upper cradle 2, and a hanger 7 is received and the steel-pipe pile 5 is fixed temporarily. A hanging jig 6 is retreated at the time of the temporary fixing, a PC steel bar 9 is installed onto the side section of the steel-pipe pile 5, and a suspension type pile fixture 12 is mounted at the upper end section of the PC steel bar 9. The support material 8 is removed from the upper cradle 2, the steel-pipe pile 5 is further dropped by the pile fixture 12, the support material 8 such as the tommy bar is crossed over the top face of the upper cradle 2 again, and the pile fixture 12 is received and the steel-pipe pile 5 is fastened. Lastly, the periphery of the steel-pipe pile 5 is filled with mortar, etc., and the pile fixture 12 is removed from the PC steel bar 9 after solidification.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a steel pipe pile setting device for setting a steel pipe pile at a predetermined position.

[0002]

2. Description of the Related Art In recent years, a station building has been constructed just above a station in order to effectively use the sky above a track, an elevated work directly above the railway due to an overpass of a railway, and a viaduct close to the track have been increased. ing. In these cases, from the viewpoint of workability of construction work close to the railroad track and ensuring safety of train running, it is considered that a building or a building without underground beams is desirable in order to reduce excavation work. This is a one-column, one-pile structure, which has been implemented in a part of the past.
Road lining is not required.

[0003]

[Problems to be Solved by the Invention] "Steel pipe insertion method" in which a steel pipe pillar is embedded in a steel pipe pile as a structural type of a building or a structure
In the case of, since the accuracy of the steel pipe pile is directly reflected on the accuracy of the building or the structure of the upper structure, it is important to install a large number of steel pipe piles at predetermined positions. However, conventionally, there is no technology for controlling and managing the position (both horizontal and vertical) of the steel pipe pile with an accuracy of mm unit. Therefore,
SUMMARY OF THE INVENTION It is an object of the present invention to provide a steel pipe pile installation apparatus that can easily install a steel pipe pile at a predetermined position with a simple configuration.

[0004]

SUMMARY OF THE INVENTION As a specific means for achieving this object, the present invention relates to a lower mount which is installed at a predetermined position on the ground so as to surround a pile hole, and a lower mount provided at a predetermined position above the lower mount. An upper mount to be installed, a hanging jig for suspending a steel pipe pile and dropping it into the pile hole from above the upper mount, and a supporting material such as a hairpin for temporarily fixing an upper portion of the steel pipe pile on the upper mount. And a suspending jig for fixing the hanging pipe, which is attached to the steel pipe pile via a PC steel rod at the time of the temporary fixing, and the steel pipe is fixed by the jig for fixing the pile. The gist of the present invention is a steel pipe pile installation device in which a pile is further dropped, and a pile fixing jig is fixed on the upper pedestal via a supporting member such as a hairpin so that the steel pipe pile can be installed at a predetermined position. Also, in this steel pipe pile installation device, a plurality of retractable guide devices for guiding the drop of the steel pipe pile were mounted on the upper pedestal, and the mounting position of the pile fixing jig to the PC steel rod was adjusted. By doing so, the gist is that the steel pipe pile is set in advance so as to be at a predetermined embedding position.

[0005]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 (a) to 1 (g) show a process of installing a steel pipe pile using the steel pipe pile installation device according to the present invention. First, FIG. 1 (a) shows a gantry setting process, and FIG.
And the upper gantry 2 are installed at a predetermined position on the ground so as to surround the pile hole 3.

As shown in FIGS. 2A and 2B, the lower gantry 1 is formed in a frame shape by a steel material 1a, and two support members 1b are attached to the upper portion thereof by being extended in parallel. Hanging hooks 1c are attached to the four corners, respectively.

As shown in FIG. 3A, the upper gantry 2 is formed of a steel material 2a in a substantially girder shape, and a collapsible guide device 4 is mounted at the center of the upper surface of each side, and at the four corners. Have hanging hooks 2b attached thereto.

As shown in FIG. 3B, a bracket 4a is fixed to the upper surface of a steel member 2a, and a support cylinder 4b is pivotally supported on the bracket 4a via a pin 4c.
A roller 4d is attached to the tip of the support cylinder 4b. When the support cylinder 4b is tilted toward the inside of the upper base 2, the diameter of a circle surrounded by the four rollers 4d is substantially equal to the outer diameter of a steel pipe pile 5 described later. That is, these rollers 4d come into contact with the outer surface when the steel pipe pile 5 is dropped and rotate to perform a guide action.

The lower frame 1 and the upper frame 2 configured as described above.
Are all suspended by a crane or the like and moved.
Are installed at predetermined positions corresponding to the pile holes 3, and the upper gantry 2 is installed at a predetermined position corresponding to the lower gantry 1 (FIG. 4).

Next, as shown in FIG. 1B, the steel pipe pile 5 is hung by a jig 6 for hanging. The hanging jig 6 has a pair of chains 6a at the lower part as shown in FIG. 5, and the lower end of the chain 6a is attached to the hanging metal fitting 7 attached to the upper part of the steel pipe pile 5, respectively. Hook 6b
Is suspended by a crane or the like.

Then, as shown in FIG. 1C, the steel pipe pile 5 is inserted from above the upper gantry 2 and dropped into the pile hole 3. At this time, the roller 4d is tilted down as described above to regulate the dropping position of the steel pipe pile 5, and a smooth and reliable dropping is performed by the guide action.

When the hanging bracket 7 of the steel pipe pile 5 approaches the upper surface of the upper gantry 2 by this dropping, a supporting member 8 such as a hairpin is inserted over the upper surface of the upper gantry 2 as shown in FIG. By receiving, the steel pipe pile 5 is temporarily fixed in a suspended state.

At the time of the temporary fixing, the chain 6a is detached from the hanging metal 7 of the steel pipe pile 5, and the hanging jig 6 is retracted.
As shown in FIG. 1 (e), a PC steel rod 9 is attached to the side of the steel pipe pile 5.

As shown in FIG. 6, the lower end of the PC steel rod 9 is inserted into a bracket 10 attached to the upper part of the steel pipe pile 5, and the nut 11 is screwed into the screw portion 9a. And fastened to the lower surface of the bracket 10. This P
Two C steel bars 9 are attached to the opposing positions. The screw portion 9a
Is preferably provided over the entire length of the PC steel rod 9.

In FIG. 6, reference numeral 12 denotes a suspension-type pile fixing jig formed of a steel material.
2a, through holes 12b are respectively opened below, and hanging hooks 12c are attached to both ends.

The upper end of the PC steel bar 9 is inserted into the through hole 12b and the mounting portion 12a of the pile fixing jig 12, and a wing nut 13 is screwed into the screw portion 9a and fastened to the upper surface of the mounting portion 12a. Then, the pile fixing jig 12 is attached to the upper end of the PC steel bar 9. At this time, the mounting position of the pile fixing jig 12 is adjusted, and the top end of the steel pipe pile 5 and the pile fixing jig 1 are adjusted as shown in FIG.
2 is set in advance so as to have a predetermined distance L from the lower surface. This is preparation for finally determining the installation position of the steel pipe pile 5, and can be accurately adjusted in mm units.

Thereafter, the pile fixing jig 12 is slightly raised to remove the support member 8 from the upper gantry 2, and the steel pipe pile 5 is further moved by the pile fixing jig 12 as shown in FIG. When the pile fixing jig 12 approaches the upper surface of the upper gantry 2, the supporting member 8 such as a hairpin is again inserted into the upper surface of the upper gantry 2, and the steel pipe pile 5 is received by receiving the pile fixing jig 12. Fix in a suspended state.

When the steel pipe pile 5 is fixed, the space L between the top end of the steel pipe pile 5 and the lower surface of the pile fixing jig 12 is preset as shown in FIG. A predetermined distance S from the ground to the top of the steel pipe pile 5 is secured.

Finally, although not shown, the periphery of the steel pipe pile 5 is filled with mortar or the like, and after solidification thereof, the wing nut 13 is formed.
And the pile fixing jig 12 is removed from the PC steel bar 9 and retracted.

In this manner, a large number of steel pipe piles 5 can be embedded at predetermined positions. When the steel pipe pile 5 is, for example, a soil cement composite steel pipe pile, as shown in FIG.
The FT steel pipe column P can be inserted and embedded in the steel pipe pile 5.

In the steel pipe insertion method, the pile length is not changed to the steel pipe pile 5, but only the pile head is steel pipe K as shown in FIG.
Although there is a case where it is reinforced by the method, it can be applied to any of them. Further, the present invention can be applied to general steel pipe pile construction, the accuracy of steel pipe pile installation is improved, and quality assurance is ensured.

[0022]

As described above, according to the present invention,
With a very simple configuration, steel pipe piles can be installed at a predetermined position with high precision. This is the most suitable technology for buildings and structures with one pillar and one pile structure. The accuracy can be easily secured by adopting the construction. It has excellent effects such as saving labor time.

[Brief description of the drawings]

FIGS. 1A to 1G are explanatory diagrams sequentially showing a steel pipe pile installation process using a steel pipe pile installation apparatus according to the present invention.

FIGS. 2A and 2B show a lower frame, wherein FIG. 2A is a plan view and FIG. 2B is an elevation view.

FIGS. 3A and 3B show an upper gantry, wherein FIG. 3A is a plan view, and FIG.

FIG. 4 is a plan view showing a set state of a lower mount and an upper mount.

FIG. 5 is a schematic perspective view showing a state where a steel pipe pile is suspended by a suspension jig.

FIG. 6 is a schematic perspective view showing a state where a PC steel rod and a pile fixing jig are attached to a steel pipe pile.

FIG. 7 is a schematic elevation view showing a fixed state of the steel pipe pile.

FIGS. 8A and 8B are explanatory views showing a steel pipe insertion method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lower gantry 2 ... Upper gantry 3 ... Pile hole 4 ... Retractable guide device 5 ... Steel pipe pile 6 ... Hanging jig 7 ... Hanging metal fitting 8 ... Supporting material 9 ... PC steel rod 10 ... Bracket 11 ... Nut 12 … Pile fixing jig 13… Wing nut

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideyo Shiokawa 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Toshiyuki Shioya 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation Inside the corporation

Claims (3)

[Claims] 1. A lower gantry installed at a predetermined location on the ground so as to surround a pile hole, an upper gantry installed at a predetermined location above the lower gantry, and a steel pipe pile suspended from above the upper gantry. A jig for dropping into the hole, a support material such as a hairpin for temporarily fixing the upper part of the steel pipe pile on the upper gantry, and removing the jig for hanging at the time of the temporary fixation, the PC
A hanging-type pile fixing jig attached to the steel pipe pile via a steel rod, and further dropping the steel pipe pile with the pile fixing jig, and placing the pile fixing jig on the upper gantry. A steel pipe pile installation device capable of mounting a steel pipe pile at a predetermined position by fixing the support via a supporting member such as a hairpin. 2. The steel pipe pile installation device according to claim 1, wherein a plurality of retractable guide devices for guiding dropping of the steel pipe pile are attached to an upper portion of the upper mount. 3. The steel pipe pile installation device according to claim 1, wherein the steel pipe pile is set in advance to a predetermined embedding position by adjusting the mounting position of the pile fixing jig to the PC steel rod.