JPH0892954A - Pile device, and construction method thereof - Google Patents

Abstract

PURPOSE: To increase the strength of a jointed part of added piles by laying out a reinforcement member to a main body which adds a plurality of piles by interconnecting the end of each pile and at least a jointed area inside the main body and filling up fillers which are cured in the main body. CONSTITUTION: A lower side-pile 2 is driven to a specified depth so that the upper part of a main body 1 may remain on a ground. The end of an upper side-pile 3 is butt-welded with the upper end of the pile 2, thereby forming a jointed area and then driving the piles 2 and 3 in one pier The earth in the main body 1 is removed by driving in an auger screw or spraying jet water. Then, reinforcing bars 5 are installed to a jointed area 4 inside the main body 1 in a state where they are suspended from a truck crane or the like. Remaining in the above state, a filling material 6, such as concrete or mortar is filled inside the main body 1 from a liquid injection nozzle so that the whole inside area of the main body may be filled. Then, the filling material 6 is left naturally as it is and cured, thereby fixing the reinforcing bar member 5 with the jointed area 4 inside the main body and increasing the strength of the jointed area 4.

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 placed in a long state by adding piles and a construction method thereof.

[0002]

2. Description of the Related Art Pile walls for stopping water and retaining soil are constructed by placing piles such as H steel sheet piles and steel pipe sheet piles in a laterally connected state. In constructing this pile wall, short piles are added to make it long. That is, as shown in FIG. 15, when the first pile 100 is driven, the second pile 110 is joined to the upper end of the first pile 100 through the welded portion 120 to be integrated, and in this state. It is to set. This allows multiple piles 100, 110
Since it is in the state of being replenished, it can be a vertically long pile wall.

[0003]

However, when a plurality of piles are replenished by welding, the welded portion has low strength,
There was a problem of breaking at the weld when a large earth pressure P was applied. In order to make up for this lack of strength, it is necessary to weld a reinforcing plate around the welded portion or bolt it, but it takes a long time to attach the reinforcing plate, and the workability is reduced. Further, even if the reinforcing plate is attached, there is a disadvantage that sufficient strength cannot be obtained.

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

[0005]

In the pile device of the present invention, a main body in which a plurality of piles are laid in the form of a joint by joining end portions in the longitudinal direction to each other, and at least the inside of the main body is provided. A reinforcing member arranged at the joint portion,
And a filling agent that is filled inside the main body and hardens.

According to the method of the present invention for constructing this pile device, a step of forming a main body by joining a plurality of piles in a splicing manner while joining the longitudinal ends to each other, and removing the soil inside the main body The method is characterized by including a step of performing and a step of filling the inside of the main body with a filler and curing the filler in a state where the reinforcing bar member is arranged at least at the joint portion inside the main body.

[0007]

In the pile device having the above structure, the reinforcing bar member is located at the joint where the piles are added, and when the filler is hardened, the joint is given a large strength from the inside. Therefore, even if a large earth pressure is applied, the joint portion will not break.

The construction method of the above construction is basically the same as the construction of the pile wall for the purpose of waterproofing, etc., because the inside of the pile is filled with a filler such as concrete, but the filling with the filler is carried out. In doing so, the reinforcing member is arranged at the joint portion of the pile to increase the strength of the joint portion. Therefore, the construction itself is simple and the workability does not deteriorate.

[0009]

FIG. 1 shows an embodiment of the pile device of 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. To add the piles 2 and 3, the ends of the piles 2 and 3 in the longitudinal direction are butted.
This is done by welding the abutted portions to form the joint 4. Reference numeral 5 is a bar arrangement member provided in the joint portion 4 inside the main body 1. The reinforcing bar member 5 has an appropriate length centering on the joint portion 4 and extends into the upper and lower piles 2 and 3.

The filler 6 is placed inside the main body 1 in such a state.
Is filled. As the filler 6, concrete, mortar, or the like is used, which is filled in the main body 1 and then hardened. By this hardening, the upper and lower piles 2 and 3 are integrated inside. Due to the hardening of the filler 6, the reinforcing bar member 5 is fixed in a state where the upper and lower piles 2 and 3 are bridged over each other, and imparts great strength to the joint portion 4 of the main body 1. Therefore, the main body 1 does not break even when a large earth pressure is applied.

2 to 5 show examples of the reinforcing bar member 5 arranged inside the main body 1. As shown in FIG. The reinforcing bar member 5 may be arranged so as to straddle the joint portions 4 of the piles 2 and 3. As shown in FIG. 2, a reinforcing bar cage shape in which iron wire material is knitted or a reinforcing bar cage shape shown in FIG. As described above, a frame shape in which a metal rod such as iron is assembled by welding can be used. Alternatively, 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 portion remains on the ground, and abutting the lower end portion of the upper pile 3 on the upper end portion of the lower pile 2 and the ends thereof. This can be done by welding the parts to form the joint part 4 and then driving the piles 2 and 3 integrally. After the placing of the main body 1, as shown in FIG. 7, the soil inside the main body 1 is discharged. The soil can be discharged by a known method in which an auger screw enters the inside of the main body 1 or jet water is jetted.

When the soil is discharged, the inside of the main body 1 becomes hollow, and the reinforcing bar member 5 is arranged inside the hollow main body. FIG. 8 shows this process, and the bar arrangement member 5 is a crane vehicle (not shown).
It is lowered into the main body 1 while being suspended from the wire 8 from the above. This bar arrangement member 5 is a joint portion 4 of the piles 2 and 3.
The descent is stopped at the time of being positioned at, and thereby the bar arrangement member 5 is arranged at the joint portion 4 in the main body 1. Then, in this state, as shown in FIG. 9, the inside of the main body 1 is filled with the filler 6. As the filler 6, concrete or mortar is used, and the liquid injection nozzle 9 inserted in the main body 1
Is filled into the main body 1. This filling is performed until the entire inside of the main body 1 is filled, and the filler 6 is hardened by leaving it to stand. It should be noted that the wire 8 may be separated from the reinforcing bar member 5 and pulled up when the filler 6 is semi-cured to the extent that the reinforcing bar member 5 does not sink under its own weight, and the wire 8 is left in the filler 6 together with the reinforcing bar member 5. May be.

Through the steps described above, the reinforcing bar member 5 is fixedly positioned at the joint portion 4 inside the main body 1 as shown in FIG. 1, and the strength of the joint portion 4 is increased. This construction is the same as the construction of the pile wall in which a filler such as concrete is filled in the pile and hardened to improve the water blocking property, and a step of arranging the reinforcing member 5 in the joint portion 4 at the time of filling the filler. It can be done simply by adding. Therefore, quick work can be performed without lowering workability.

FIG. 10 shows another example of the arrangement of the reinforcing bar members 5 inside the main body 1. The locking portion 10 is attached in advance by welding or the like to the vicinity of the joint portion 4 on the inner surface of the lower pile 2. The locking portion 10 projects inward of the lower pile 2, and when the bar arrangement member 5 is dropped into the main body 1, the member 5 is locked and the fall below that is stopped. By this stop, the reinforcing bar member 5 is located at the joint portion 4, so that by filling the main body 1 with the filler, the joint portion 4
The strength of can be increased.

11 and 12 respectively show another example of the pile device. In these pile devices, the rebar 1
1 is arranged. In FIG. 11, since the corresponding portion of the reinforcing bar 11 with the joint portion 4 is densely knitted,
This dense portion serves as the bar arrangement member 5. On the other hand, FIG.
Then, a pipe-shaped reinforcing bar 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, only by inserting the reinforcing bar 11 into the main body 1, the reinforcing bar members 5 are located at the joints 4. And the main body 1
Although the pile device is constructed by filling the inside of the with a filler and curing the same, there is an advantage that the strength of the entire main body 1 is increased because the reinforcing bars 11 are arranged in the entire main body 1. As a result, the strength of the joint portion 4 is further increased, and even if a large earth pressure is applied, the joint portion 4 is not broken and is not bent.

13 and 14 show a pile wall constructed using the pile device as described above. In FIG. 13, an H-shaped steel sheet pile 13 is used as a pile, and in FIG. 14, a steel pipe sheet pile 14 is used. All of these piles 13 and 14 are joint portions 13 for connecting with adjacent piles.
It has a, 13b, 14a and 14b at both ends. Then, the pile walls can be constructed by sequentially driving the piles 13 and 14 side by side while the joint portions 13a and 13b and 14a and 14b are engaged with each other. By this casting, in the case of the H-shaped steel sheet pile 13, a closed space 15 is formed between adjacent piles, and this space 15 portion becomes the main body of the pile device described above. In the case of the steel pipe sheet pile 14, each sheet pile 1
4 is the main body of the pile device. Then, the soil of the inside of the main body of these pile devices is discharged, the reinforcing bar 5 as shown in FIG. 4 and FIG. 5 is positioned at the joint between the added upper and lower piles, and the filler is filled and hardened. As a result, it is possible to construct the 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 which are replenished, the strength of the joints is increased and the joints can be prevented from being broken due to earth pressure.
In addition, the construction method of the present invention can construct the pile device simply by adding the step of positioning the reinforcing bar member at the joint part to the construction of the known pile wall in which the filler is filled in the pile. For this reason, the construction can be performed easily and the construction can be performed quickly.

[Brief description of drawings]

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

FIG. 2 is a perspective view of a first example of a bar arrangement member.

FIG. 3 is a perspective view of a second example of a bar arrangement member.

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

FIG. 5 is a perspective view of a fourth example of a bar arrangement member.

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

FIG. 7 is a cross-sectional view of steps in the construction method of the present invention.

FIG. 8 is a cross-sectional view of steps 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 sectional view showing the locking of the bar arrangement member.

FIG. 11 is a 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 conventional construction.

[Explanation of symbols]

 1 Main body 2, 3 Pile 4 Joint part 5 Rebar member 6 Filler

Claims (4)

[Claims] 1. A main body in which a plurality of piles are piled up in a form of a joint by joining end portions in the longitudinal direction to each other, and a reinforcing bar member arranged at least in the joint portion inside the main body. , A pile device having a filling agent that is filled and cured inside the main body. 2. A step of forming a main body by adding a plurality of piles in a splicing manner while joining longitudinal ends to each other, a step of discharging soil inside the main body, and at least the joining inside the main body. A method of constructing a pile device, which comprises a step of filling a filler inside the main body with the reinforcing member arranged in a portion and hardening the filler. 3. The method for constructing a pile device according to claim 2, wherein the reinforcing bar member is suspended inside the main body and disposed at the joint portion. 4. The construction of the pile device according to claim 2, wherein an engaging portion is formed inside the main body near the joint portion, and the reinforcing member is engaged with the engaging portion. Method.