JP2553002B2 - Pile press-in / pull-out machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile press-in / pull-out machine which is advantageous in constructing a retaining wall, a formwork, a wall reinforcing material and a support pile for a structure when, for example, constructing an underground structure. br />

[0002]

2. Description of the Related Art Conventionally, for example, when constructing an underground structure, a soil retaining wall is provided with sheet piles or soil piles, and then the ground is excavated to form an underground hole. When this excavation is carried out, in order to prevent the earth retaining wall from collapsing, a cutting beam and a bellows are provided. When the excavation is complete, next, in order to build a structure, place the reinforcing bars in place in the reinforced concrete construction,
A formwork was installed and concrete was poured into this formwork.

[0003]

In such a conventional method of constructing a wall body, since the earth retaining wall is a flat plate, there are disadvantages such as weak strength and the earth retaining wall falling down. To prevent this retaining wall from collapsing, it is necessary to provide a crossbeam and an upset. Therefore, there is a problem that the construction period and the construction cost increase. In view of the conventional circumstances as described above, the present invention is advantageous in constructing an earth retaining wall, a formwork, a wall reinforcing material and a supporting pile for a structure when constructing an underground structure, etc.
The purpose is to provide an I / O machine .

[0004]

[0005]

[Means for Solving the Application] A pile press-fitting / pulling machine of the present invention includes a saddle having a clamp for holding an existing pile at a lower portion,
A slide base provided on the saddle so as to be movable in the front-rear direction by at least one pitch of the existing pile and provided with a mast standing on the upper surface, and a chuck for gripping the pile that can slide vertically along the mast. In a pile press-fitting / extracting machine having a lifting body, the chuck is provided with a chuck body made of a hollow body in which a steel sheet pile and an H-shaped steel are selectively inserted in a longitudinal direction, and a chuck body protruding toward an inner surface of the chuck body and facing each other and separated from each other. a pair of fixed claws, characterized by being composed of the said fixed claw end movable claw provided retractably a position facing.

[0006]

[Action] For configuring the earth retaining wall of steel sheet piles, will wall steel sheet pile is successively connected to a substantially U-shape, so further was injected H-shaped steel in a recess of a predetermined number of sheet piles compared with earth retaining wall comprising a normal flat plate, etc. Strength increases. Therefore, it is not necessary to provide a cross beam and an upset, and the thickness of the wall itself can be reduced. Moreover, when using steel sheet pile as a formwork, it is not necessary to install the formwork separately from the retaining wall. Furthermore, when steel sheet pile is used as a formwork and concrete is poured into this formwork, the H-shaped steel serves as a reinforcing material for the concrete wall body, and the strength of the concrete wall body can be improved. Further, the H-section steel can be used so as to also serve as a pile for a structure. It is possible to efficiently and surely carry out the construction method in which a plurality of steel sheet piles are press-fitted into the ground by the pile press-in / pull-out machine and the H-section steels are respectively press-fitted into the ground in the recesses of a predetermined number of steel sheet piles with a single device. Can be done.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the anti-press fitting method and pile press fitting and withdrawing machine of the present invention will be described with reference to the drawings. The structure of the pile press-fitting / pulling-out machine A for press-fitting the steel sheet pile and the H-shaped steel will be described with reference to FIGS. The anti-press-fitting / pulling-out machine A is configured with a saddle 4 having a clamp 2 for holding a plurality of existing steel sheet piles P press-fitted into the ground, and a steel sheet piles P and H in front of the saddle 4.
It has a chuck 3 for sandwiching a model steel 10 and press-fitting it. A slide base 5 is mounted on the saddle 4 so as to be movable in a direction parallel to the existing steel sheet piles P by at least one pitch, and a mast 6 standing on the slide base 5 is provided along a guide rail 7 in front of the mast 6. A chuck 3 that vertically slides and holds the press-fitted steel lost plate P or the press-fitted H-shaped steel 10 is formed via an elevating mechanism 8.

The structure of the chuck 3 will be described with reference to FIG. The chuck 3 has steel sheet piles P and H in the vertical direction.
The chuck body 31 has a hollow body that can selectively insert any one of the shape steel 10. This chuck body 31
The pair of fixed claws 32 protrude from the inner surface of the chuck body 31 so as to be spaced apart from each other, and the movable claw 33 movable to the position facing the fixed claw 32 by the fluid pressure cylinder device 34. The chuck 3 holds the web 11 of the steel sheet pile P between the fixed claw 32 and the movable claw 33 as shown in the figure. In the case of the H-shaped steel 10, the connecting plate portion 13 is arranged between the pair of fixed claws 32. The one side plate 12 is sandwiched between the fixed claw 32 and the movable claw 33.

A pile press-fitting method using the pile press-fitting / extracting machine A having the above structure will be described. First, the pile press-fitting / pulling machine A is fixed on the existing steel sheet pile P row. Then, the press-fitted steel sheet pile P is sandwiched by the chuck 3 and connected to the front end of the existing steel sheet pile P by press fitting to form a moving pile. In the steel sheet pile P, as shown in FIG. 3 (A), the web 11 of the steel sheet pile P positioned between the inner surface of the chuck body 31 and the outer surface of the fixed claw 32 is fixed claw 32 and movable claw 3.
Hold with 3. Next, the slide base 5 is moved forward to move the chuck 3 by one pitch, and the press-fitting steel sheet pile P is sandwiched by the chuck 3 so as to be adjacent to the steel sheet pile P at the front end and press-fit to an appropriate depth. After that, the press-fitting of the press-fitting steel sheet pile P is temporarily stopped, the clamped state of the clamp 2 is released, and the saddle 4 is appropriately raised in height and advanced by one pitch of the pile. Next, the saddle 4 is lowered and the existing steel sheet pile P is clamped by the clamp 2. After that, the chuck 3 is lowered again, and the press-fitting steel sheet pile P is completely press-fitted. By repeating this work, the pile press-in / pull-out machine A can be sequentially press-fitted while the pile press-fitting / extracting machine A is self-propelled on the existing steel sheet pile P.

After the steel sheet pile P is press-fitted as described above, the H-shaped steel 10 is then inserted into the chuck 3 and the H-shaped steel 10 is press-fitted into the recess Pa of the steel lost plate P. In this case, H-shaped steel 1
As shown in FIG. 3 (B), 0 indicates that the connecting plate portion 13 of the H-shaped steel 10 is positioned between the pair of fixing claws 32, and one side plate portion 1
2 is sandwiched between the fixed claw 32 and the movable claw 33.

As described above, in addition to press-fitting the H-shaped steel 10 while press-fitting the steel sheet pile P, the H-shaped steel 10 may be press-fitted after the press-fitting of the steel sheet pile P is completed and the earth retaining wall is created. . Further, after the H-shaped steel 10 is press-fitted into the recess Pa of the steel sheet pile Px in FIG. 1, the mast 6 of the pile press-fitting / extracting machine A is swung,
The H-shaped steel 10 may be press-fitted into the recess Pa of the steel sheet pile Py at the rear of the press-fitting advancing direction by turning the chuck 3 180 degrees and inverting it.

When the H-section steel 10 is press-fitted while the steel sheet pile P is being press-fitted, when the H-section steel 10 is press-fitted into the steel sheet pile P in the forward direction of the press-fitting progress, when the steel sheet pile P is clamped later, H The shape steel 10 becomes an obstacle. Therefore, if the H-shaped steel 10 is press-fitted into the recess Pa of the steel sheet pile Py behind the press-fitting traveling direction as described above, this problem will be eliminated.

Now, a method of constructing a wall body using this embodiment will be described. Steel sheet piles P and H as described above
After the model steel 10 is press-fitted to form the connecting wall, the ground is excavated.
When this excavation is completed, next, as shown in FIG. 4, the vertical reinforcement 41 and the horizontal reinforcement 42 are arranged at predetermined positions in reinforced concrete construction, so-called reinforcement is performed, and the steel sheet pile P is used as a formwork. The concrete 43 is placed on the frame. In this case, the H-shaped steel 10 serves as a reinforcing material for the concrete wall, and also serves as a support pile for the structure if necessary. When using it as a support pile for a structure, press it deeper than when using it as a wall reinforcement.
In addition, you may make it arrange | position a reinforcement inside the steel sheet pile P in which the H-section steel 10 is not arrange | positioned. Further, inside the steel sheet pile P on which the H-section steel 10 is arranged, reinforcement may be performed by a poop reinforcement or the like so as to surround the H-section steel.

The above-described anti-press-fitting method has the following advantages. Conventionally, in order to prevent the retaining wall from collapsing, it is necessary to provide a cross beam and a bellows. However, as a result of configuring the retaining wall with the steel sheet piles P, the steel sheet piles P become a continuous U-shaped wall in sequence, and Since the strength is stronger than that of the earth retaining wall made of a flat plate or the like, it is not necessary to provide a cutting beam and an upset, and the thickness of the wall itself can be reduced. Further, when the steel sheet pile P is used as a form, it is not necessary to install the form separately from the retaining wall. Furthermore, as a result of press-fitting the H-shaped steels 10 into the ground of the recesses of the predetermined number of steel sheet piles P, the steel sheet pile P is used as a formwork, and concrete pouring work is performed by pouring concrete into the formwork. When performed, the H-shaped steel 10 serves as a reinforcing material for the concrete wall body, and the strength of the concrete wall body can be improved.

As a result of the above, when constructing an underground structure, for example, it is advantageous in constructing the retaining wall, the wall reinforcing material, the formwork, and the support pile for the structure, and does not require troublesome labor. The construction period and construction cost can be shortened. Furthermore, according to the above-described anti-press-fitting / extracting machine, the chuck 3 is configured such that the steel sheet pile P and the H-shaped steel 10 can be selectively sandwiched, so that a plurality of steel sheet piles P are press-fitted into the ground and a predetermined number of steel sheets are pressed. The method of press-fitting the H-section steel 10 into the ground of the recess of the sheet pile P can be carried out by one press-fitting device,
The press-fitting method can be performed efficiently and reliably.

[0016]

The pile press-fitting method of the present invention is advantageous in constructing earth retaining walls, wall reinforcements, formwork and support piles for structures, for example, when constructing an underground structure. It is possible to reduce the construction period and the construction cost. In particular, according to the pile press-fitting / pulling machine of the present invention, the method of press-fitting the H-section steel into the ground of the recesses of the predetermined number of steel sheet piles can be efficiently and reliably performed.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing one example of a method of press-fitting a pile .

FIG. 2 is a front view showing an embodiment of the anti-press fitting and withdrawing machine of the present invention.

FIG. 3 is a sectional view showing a structure of a chuck in the pile press-fitting / pulling machine.

FIG. 4 is a schematic plan view showing a structure of a wall body formed after the pile press-fitting method is applied.

[Explanation of symbols]

 A Anti-press fit puller P Steel sheet pile 2 Clamp 3 Chuck 31 Chuck body 34 Chuck body 34 Fluid pressure cylinder device 32 Fixed claw 33 Movable claw 4 Saddle 5 Slide base 6 Mast 7 Guide rail 8 Elevator 10 H-shaped steel

Claims (1)

(57) [Claims] 1. A saddle provided with a clamp for holding an existing pile at a lower portion, and a slide base provided on the saddle so as to be movable in the front-rear direction by at least one pitch of the existing pile, and a mast standing on the upper surface. A pile press-fitting / extracting machine having an elevating body that is vertically slidable along the mast and has a chuck for sandwiching a pile, wherein the chuck is a hollow in which a steel sheet pile and an H-shaped steel are selectively inserted in a vertical direction. A pile comprising a chuck body composed of a body, a pair of fixed claws protruding from an inner surface of the chuck body and facing each other and spaced apart from each other, and a movable claw provided at a position opposite to a tip of the fixed claw so as to be movable back and forth. Press-fitting and withdrawing machine.