JP2739289B2 - Pile device and construction method - 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 device which is a unit for constructing a pile wall, and more particularly to a pile device which is driven into a long state by adding a pile, and a method of constructing the pile device.

[0002]

2. Description of the Related Art A pile wall for stopping water and retaining soil is constructed by driving piles such as H steel sheet piles and steel pipe sheet piles in a state of being connected in a lateral direction. In constructing this pile wall, short piles are added to make them long. That is, as shown in FIG. 15, when driving the first pile 100, the second pile 110 is joined to the upper end of the first pile 100 via the welded portion 120 and integrated. Casting is performed. Thereby, a plurality of piles 100, 110
Because it is in a state of being extended, a vertically long pile wall can be obtained.

[0003]

However, when a plurality of piles are added by welding, the strength of the weld is low.
When a large earth pressure P is applied, there is a problem that the welded portion breaks. In order to compensate for the insufficient strength, it is necessary to weld a reinforcing plate around the welded portion or to bolt the reinforcing plate, but it takes a long time to attach the reinforcing plate, and the workability is reduced. In addition, even if the reinforcing plate is attached, there is still a disadvantage that sufficient strength cannot be obtained.

The present invention has been made in view of the above circumstances, and has as its object to provide a pile device capable of obtaining a sufficient strength even in a structure in which a plurality of piles are added. Another object of the present invention is to provide a construction method capable of efficiently and simply constructing this pile device.

[0005]

According to the pile device of the present invention, a plurality of piles are piled up and driven by joining their longitudinal ends to each other to form a cylindrical closed space. a body, is carried into the main body from the upper opening of the main body after the replenishing, reinforcement disposed on at least the joint portion
It is characterized by comprising a member and a filler that fills and hardens inside the main body.

The method of constructing a pile device according to the present invention comprises the steps of forming a main body of the pile device by adding and driving a plurality of piles while joining longitudinal ends of the pile device to each other. A step of discharging the soil to form a cylindrical closed space by the main body, and being carried into the main body from the upper opening of the main body, and filling the inside of the main body with the reinforcing member arranged at least at the joint portion. Filling and curing.

[0007]

In the pile device having the above structure, the reinforcing member adds the pile.
It is located at the joint, and the filler cures
This imparts great strength from the inside to the joint. others
Even if large earth pressure acts, the joints will not break.
It becomes .

[0008] The construction method of the above configuration is a method in which
Since it is filled with fillers such as
Same as pile wall construction for water, etc.
When filling, place the reinforcing members at the joints of the piles.
Thus, the strength of the joint is increased. Therefore, the construction itself
It is simple and does not reduce workability .

[0009]

FIG. 1 shows an embodiment of a pile device according to the present invention. H
The main body 1 is formed by adding piles 2 and 3 such as shaped steel sheet piles and steel pipe sheet piles in the longitudinal direction. The extension of the piles 2 and 3 abuts the ends of the piles 2 and 3 in the longitudinal direction,
The joining is performed by welding the butted portions. Reference numeral 5 denotes a reinforcing member provided at the joint 4 inside the main body 1. The reinforcing member 5 has an appropriate length and extends into the upper and lower piles 2 and 3 around the joint 4.

In such a state, the filler 6 is provided inside the main body 1.
Is filled. The filler 6 is made of concrete, mortar, or the like, and hardens after being filled in the main body 1. By this hardening, the upper and lower piles 2 and 3 are integrated inside. Due to the hardening of the filler 6, the reinforcing member 5 is fixed in a state where the upper and lower piles 2 and 3 are bridged, and provides a large strength to the joint 4 of the main body 1. Therefore, the main body 1 does not break even when a large earth pressure acts.

FIGS. 2 to 5 show examples of the reinforcing members 5 arranged inside the main body 1. FIG. The reinforcing member 5 only needs to be disposed so as to straddle the joint portion 4 of the piles 2 and 3, and as shown in FIG. 2, a reinforcing bar cage shape in which iron wires are knitted in a net shape, or as shown in FIG. Thus, a frame shape in which a metal rod such as iron is assembled by welding can be used. Further, as shown in FIGS. 4 and 5, a round or square pipe may be used.

6 to 9 show a method of constructing the pile device 1 described above in the order of steps. First, as shown in FIG. 6, the piles 2 and 3 are sequentially driven to form the main body 1. The main body 1 is formed by driving the lower pile 2 to a predetermined depth so that the upper part remains on the ground, and butting the lower end of the upper pile 3 to the upper end of the lower pile 2. The joints 4 are formed by welding the parts, and thereafter, the piles 2 and 3 are integrally cast. After the casting of the main body 1, the inside of the main body 1 is discharged as shown in FIG. The earth discharging can be performed by a known method of injecting an auger screw into the main body 1 or jetting jet water.

The inside of the main body 1 is hollowed by the earth removal, and the reinforcing members 5 are arranged inside the hollow main body. FIG. 8 shows this step, and the reinforcing member 5 is a crane truck (not shown).
It is lowered into the main body 1 while being hung on a wire 8 from the like. This reinforcing member 5 is a joint 4 between the piles 2 and 3.
The lowering is stopped at the time when the reinforcing member 5 is located at the position. Then, in this state, the filler 6 is filled into the main body 1 as shown in FIG. As the filler 6, concrete, mortar, or the like is used, and a liquid injection nozzle 9 inserted into the main body 1 is used.
From inside the main body 1. This filling is performed until the entire inside of the main body 1 is filled, and the filler 6 is cured by leaving it naturally. The wire 8 may be separated from the reinforcing member 5 and pulled up when the filler 6 has been semi-hardened to such an extent that the reinforcing member 5 does not sink under its own weight, and is left inside the filler 6 together with the reinforcing member 5. May be.

By the above-described steps, the reinforcing member 5 is fixedly located at the joint 4 inside the main body 1 as shown in FIG. This construction is similar to the construction of a pile wall in which a filler such as concrete is filled into the inside of a pile and hardened to improve the water stoppage, and a step of positioning the reinforcing member 5 at the joint 4 when the filler is filled. It can be done simply by adding Therefore, quick construction can be performed without lowering workability.

FIG. 10 shows another example of the arrangement of the reinforcing members 5 inside the main body 1. An engaging portion 10 is attached in advance to the inner surface of the lower pile 2 near the joint 4 by welding or the like. The locking portion 10 protrudes inward of the lower pile 2, and when the reinforcing member 5 is dropped into the main body 1, the member 5 is locked, and the lowering thereof is stopped. Since the reinforcing member 5 is positioned at the joint 4 by this stop, the filler 4 is filled by filling the main body 1 with the filler.
Can be increased in strength.

FIGS. 11 and 12 show another example of the pile device. In these pile devices, a reinforcing bar 1
1 is arranged. In FIG. 11, a portion corresponding to the joint 4 in the reinforcing bar 11 is densely knitted,
This dense portion is the reinforcing member 5. On the other hand, FIG.
In FIG. 4, a pipe-shaped reinforcing member 5 as shown in FIGS. 4 and 5 is fixed to a portion of the reinforcing bar 11 corresponding to the joint 4 by welding or the like. In any of these cases, each reinforcing bar member 5 is located at the joint 4 simply by inserting the reinforcing bar 11 into the main body 1. And the main body 1
The pile device is constructed by filling a filler into the inside and hardening the filler. However, since the reinforcing bars 11 are arranged in the entire inside of the main body 1, there is a merit that the strength of the entire main body 1 is increased. As a result, the strength of the joint portion 4 is further increased, so that the joint portion 4 is not broken or bent even when a large earth pressure is applied.

FIGS. 13 and 14 show a pile wall constructed using the above-described pile device. In FIG. 13, an H-shaped sheet pile 13 is used as a pile, and in FIG. 14, a steel pipe sheet pile 14 is used. Each of the piles 13 and 14 is a joint 13 for connecting with an adjacent pile.
a, 13b, 14a, and 14b at both ends. The pile walls can be constructed by sequentially driving the piles 13 and 14 side by side while interlocking the joints 13a and 13b and 14a and 14b with each other. In the case of the H-shaped steel sheet pile 13 by this driving, a closed space 15 is formed between the pile and the adjacent pile, and this space 15 portion becomes the main body of the above-described pile device. In the case of steel pipe sheet pile 14, each sheet pile 1
4 is the main body of the pile device. Then, the inside of the body of the pile device is discharged, and the reinforcing member 5 as shown in FIGS. 4 and 5 is positioned at the joint between the added upper and lower piles, filled with the filler, and hardened. This makes it possible to construct a pile device in which the strength of the joint is increased.

[0018]

According to the pile device of the present invention, since the reinforcing members are arranged at the joints of the piles that have been added, the strength of the joints is increased, and the joints can be prevented from breaking due to earth pressure.
In addition, the construction method of the present invention can construct a pile device simply by adding a step of positioning a reinforcing member at a joint to a known construction of a pile wall in which a filler is filled in a pile. For this reason, while being able to carry out easily, quick construction is attained.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of a pile device according to the present invention.

FIG. 2 is a perspective view of a first example of a reinforcing member.

FIG. 3 is a perspective view of a second example of a reinforcing member.

FIG. 4 is a perspective view of a third example of a bar arrangement member.

FIG. 5 is a perspective view of a fourth example of a reinforcing member.

FIG. 6 is a sectional view of a step in the construction method of the present invention.

FIG. 7 is a sectional view of a step in the construction method of the present invention.

FIG. 8 is a sectional view of a step in the construction method of the present invention.

FIG. 9 is a sectional view of a step in the construction method of the present invention.

FIG. 10 is a cross-sectional view showing locking of a reinforcing member.

FIG. 11 is a cross-sectional view of another embodiment of the pile device.

FIG. 12 is a sectional view of still another embodiment of the pile device.

FIG. 13 is a plan view of an example of a pile wall.

FIG. 14 is a plan view of another example of a pile wall.

FIG. 15 is a sectional view showing a conventional construction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2, 3 Pile 4 Joint part 5 Reinforcement member 6 Filler

Claims (4)

(57) [Claims] 1. A main body forming a tubular closed space by joining a plurality of piles together by joining longitudinal ends thereof together, and an upper portion of the main body after the driving. A pile device comprising: a reinforcing member which is carried into an inside of a main body through an opening and is arranged at least at the joint portion; 2. A step of forming a main body of a pile device by adding and stacking a plurality of piles while joining longitudinal ends thereof to each other, and discharging the inside of the main body to form a cylindrical body by the main body. Forming a closed space, and filling the inside of the main body with a filler in a state where the main body is carried into the main body through the upper opening of the main body, and at least the reinforcing member is arranged at the joint portion, and hardened. And a method of constructing a pile device having the same. 3. The method according to claim 2, wherein the reinforcing members are suspended from an upper opening of the main body into the inside of the main body and are arranged at the joint. 4. The construction of a pile device according to claim 2, wherein a locking portion is formed inside the main body near the joint portion, and the reinforcing member is locked and disposed at the locking portion. Method.