JP2000352052A - Pile driving construction method concurrently using water jet, and guide pile in the construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pile driving construction method concurrently using water jets capable of efficiently conducting press-fit pile driving work in a construction method of driving piles into the ground by a vibro hammer concurrently using water jets, and executing discharge of a excavated soil pieces and drainage of injected water, and a guide pile in this construction method. SOLUTION: A jet pipe 16 for high pressure water and pipings for compressed air are provided along a longitudinal direction of a guide pile 11, plural groove parts 19 are formed in an inner side surface of a pile, and the pile is driven by concurrent uses of a injection of high pressure water, a blowout of compressed air, and vibration of a vibro hammer, and injected water and excavated soil pieces are discharged to the ground surface through the inside of the groove parts 19. A high pressure water injection port 17 and a compressed air outlet 18 are disposed at parts having the thick wall of the guide pile 11, and the position of a driving surface at a tip of the guide pile 11 is set to coincide with the high pressure water injection port 17 and the compressed air exhaust nozzle 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of driving a pile into the ground with a vibratory hammer or the like using a water jet together with a high-pressure water injection port, and a compressed air injection port for returning the high-pressure water to the ground. The present invention relates to a water jet combined pile driving method using a guide pile having: and a guide pile in the method.

[0002]

2. Description of the Related Art A method of driving a pile into the ground using a cutter using a water jet and a vibratory hammer (hereinafter abbreviated as JV method) is a driving method using water and vibration energy. As a high-capacity, low-vibration, rapid construction method, it is used as a driving method for driving steel sheet piles, H steel piles, and other long and ultra-large steel pipe piles and sheet piles. JV is an abbreviation that combines the initials of JET and VIBRO.

The JV method, which uses vibration of a vibratory hammer while using high-pressure water, is a high-capacity method and a method of preventing vibration and noise generated during driving work to a minimum range. The energy of the high-pressure water reduces the ground reaction force at the time of driving, assists the driving ability of the vibro hammer, reduces the vibration transmitted to the ground, and secures the same supporting force as the driving pile. A dynamic ultimate bearing capacity management method has also been put into practical use. In this JV method, various base machines can be used according to site conditions. For example, self-propelled cranes or three-point pile driving machines are used for land construction, pile driving boats, barges with cranes, hoist ships, Since an elevating barge is available,
The feature is that it can be widely applied from urban civil engineering to large project construction.

FIG. 20 is a partial perspective view showing an example of a steel sheet pile 1 used in the conventional JV method. The left and right ends of the steel sheet pile 1 in a direction perpendicular to the longitudinal direction thereof are mutually connected with other steel sheet piles. Sections 1a, 1a to be engaged with each other are provided.
Reference numeral 2 denotes a reinforcing steel such as Swedish steel, and reference numeral 3 denotes a bit tip fixed to the end face of the steel sheet pile 1. Jet pipes 4 and 4 for high-pressure water (4 in the illustrated example) are provided on the inner wall surface of the steel sheet pile 1.
Book) is attached.

[0005] The construction procedure at the time of driving the steel sheet pile 1 by press-fitting will be briefly described. First, a high-pressure hose (not shown) is connected to the jet pipes 4 and 4, and the steel sheet pile 1 is suspended and built at the driving position. Next, the upper end of the steel sheet pile 1 is chucked using a vibro hammer (not shown), and the jet pipes 4 and 4 are chucked.
The driving of the steel sheet pile 1 is started by using the vibration of the vibratory hammer while injecting high-pressure water from the lower end opening of the steel sheet pile. Arrow A
Indicates the driving direction of the steel sheet pile 1.

After the driving of the steel sheet pile 1 to a predetermined level, the injection of the high-pressure water and the vibration of the vibratory hammer are stopped, and the steel sheet pile 1 is pulled out while the steel sheet pile 1 is gripped by the vibratory hammer. Of the steel sheet pile by using a vibro hammer, and again the section 1a of the steel sheet pile 1
Is engaged with the section of the driven steel sheet pile 1 to perform the same driving operation as described above. That is, the steel sheet pile 1 is used as a guide pile. Alternatively, the jet pipes 4 and 4 of the steel sheet pile 1 may be pulled out after the steel sheet pile 1 is driven. Then, the jet pipes 4 and 4 are attached to the inner wall surface of another steel sheet pile, and the same process is repeated while the sections 1a and 1a are meshed with each other to continue the work of driving the steel sheet pile. The construction procedure when driving the H steel pile is basically the same.

When driving a steel pipe pile or a steel pipe sheet pile, a jet pipe material is fixed to the surface of the base material by welding or the like, a high-pressure hose is connected to the jet pipe material, and the steel pipe pile or the steel pipe sheet pile is suspended. After that, the upper end of the pile is chucked with a vibrohammer in the same manner as described above, and the high-pressure water is sprayed from the tip of the jet pipe material, and the vibratory hammer is used in combination with the vibratory hammer to perform the press-fitting. . After the driving of the pile is completed, the injection of the high-pressure water and the vibration of the vibratory hammer are stopped, and the high-pressure hose is removed after removing the vibratory hammer. Jet piping materials can be buried or diverted by pulling out.

[0008]

However, in the method of driving a pile into the ground with a vibratory hammer in combination with such a conventional water jet, the jet pipe is located at a position shifted inward from the thick portion of the steel sheet pile 1. 4 and 4, the position of the driving face of the steel sheet pile 1 does not coincide with the injection port of the high-pressure water from the jet pipes 4, 4, and the steel sheet pile 1 is efficiently pressed and driven. In addition, the work cannot be performed, and conversely, there is a problem that the jet pipes 4 and 4 may become obstacles to increase the press-fit resistance.

Further, when high-pressure water is jetted from the tips of the jet pipes 4 and 4 in the driving direction of the steel sheet pile 1, excavated pieces of earth and sand are generated, and the excavated pieces are discharged and the jetted water is drained. New excavation surface is not exposed in the soil
There is a disadvantage that the driving efficiency of the steel sheet pile 1 is reduced, and there is also a danger that the ground will collapse due to the pressure of the high-pressure water during construction on an inclined ground. Even when driving steel pipe piles or steel pipe sheet piles, since the jet pipe material is fixed to the base metal surface by welding etc., it is natural that the pile driving direction does not match the mounting position of the jet pipe material. Therefore, efficient press-fitting of piles cannot be performed.

Accordingly, the present invention solves the problem of the method of driving a pile into the ground by a vibratory hammer using such a conventional water jet together, and solves the problem of the position of the driving surface of the pile and the injection of high-pressure water. By matching the mouth, the pile can be driven efficiently, and in addition to the jet pipe for high-pressure water, the piping for compressed air has been provided, so It is an object of the present invention to provide a water jet combined pile driving method capable of draining injected water and a guide pile in the method.

[0011]

Means for Solving the Problems In order to achieve the above object, the present invention provides a method of driving a pile into the ground with a vibro hammer or the like while simultaneously using high-pressure water jetting by a water jet. A jet pipe for high-pressure water and a pipe for compressed air are provided, and a plurality of grooves are formed on the inner surface of the pile to drive the pile using both high-pressure water jetting, compressed air jetting, and vibration of a vibratory hammer. Performed, the water jet combined pile driving method and the water jet combined pile driving method using a guide pile having the same configuration as the water jet combined pile driving method to discharge the excavated pieces of injected water and earth and sand through the groove portion and the basic means I do.

The high pressure water jet and the compressed air outlet at the tip of the guide pile are arranged at the thick portion of the guide pile, and the position of the driving surface at the tip of the guide pile, the high pressure water jet and the compressed air jet are arranged. Match the exit. As a specific configuration, a plurality of cutouts are formed along the longitudinal direction of the guide pile, and a jet pipe for high-pressure water and a pipe for compressed air are fitted into the cutouts, and a high-pressure water injection port and compressed air are formed. The outlet is located at the thick part of the tip of the pile, and a plurality of grooves for returning high-pressure water to the ground surface are formed on the inner surface of the pile.

According to the present invention, when the guide pile is driven into the ground, the jet pipe is connected to the high-pressure water supply port, the pipe for compressed air is connected to the high-pressure air source, and then the guide pile is connected. At the casting position, chuck the vibratory hammer gripping part of the guide pile with a vibratory hammer, inject high-pressure water from the high-pressure water injection port, and simultaneously use the vibration of the vibratory hammer while jetting compressed air from the compressed air outlet. Drive the guide pile. Because this high pressure water injection port and compressed air outlet are located in the thick part of the pile tip,
The driving direction of the guide pile coincides with the jetting direction of the high-pressure water from the jet pipe, so that the guide pile can be efficiently driven.

The excavated shards and water generated by the injection of the high-pressure water and the impact of the bit chips rise in the groove due to the pressure of the compressed air that is ejected, and are discharged to the surface of the ground. Therefore, there is no danger that the ground will collapse due to the pressure of the high-pressure water even during construction on an inclined ground.

After the driving of the guide pile has progressed to a predetermined level, the injection of high-pressure water, the ejection of compressed air, and the vibration of the vibratory hammer are stopped, and the guide pile is pulled out while holding the steel sheet pile with the vibratory hammer. The main pile is driven into the hole formed by the guide pile, and the driving is completed.
Hereinafter, the same steps are repeated, and the pile driving operation can be continued.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, concrete embodiments of a pile driving method combined with water jet and a guide pile according to the present invention will be described. 1 is a side view showing a case in which the present invention is applied to a steel pile type guide pile 11, and FIG.
3 is a right side view of the same, FIG. 3 is a right side view of the same, and FIG.
FIG. 5 is a cross-sectional view taken along the line CC of FIG. 4,
FIG. 6 is a cross-sectional view taken along line DD of FIG.

As shown in FIG. 1, at both left and right ends of the guide pile 11 at right angles to the longitudinal direction, there are provided section portions 11a, 11a which mesh with a main sheet pile (not shown).
Reference numeral 11b denotes a sheet pile tip, and a plurality of bit chips 13 made of cemented carbide are fixed to an end face in the driving direction of the sheet pile tip 11b. 11c is a sheet pile body, 12
Is a manifold for high-pressure water, and 14 is a vibro-hammer gripping portion. The manifold 12 is provided with a high-pressure water supply port 12a.

A plurality of cutouts 15, 15 are formed in the sheet pile main body 11c near the sheet pile tip 11b along the longitudinal direction. As shown in FIG. A jet pipe 16 for water and a pipe for compressed air (not shown) are fitted therein. As shown in FIG. 6, which is a cross-sectional view taken along line DD of FIG.
6 and the piping for compressed air are arranged and fixed along the inner wall surface of the sheet pile main body 11c, and formed on the sheet pile main body 11c as shown in FIG. 5, which is a cross-sectional view taken along line CC of FIG. It is fitted into the notch 15 while bending it, and the sheet pile tip 11b
The sheet pile tip 11b is buried in the thick part of the sheet pile.
In the driving direction. The other end of the jet pipe 16 is connected to the high-pressure water supply port 12a.

As shown in FIG. 2, a plurality of grooves 19 are formed on the inner surface of the guide pile 11. The groove portions 19, 19 extend from the sheet pile tip 11b to the sheet pile body 11c.
It is formed by extending to. 17, 1 shown in FIG.
7 is a high-pressure water injection port, 18 and 18 are compressed air outlets,
The high-pressure water injection ports 17, 17 and the compressed air outlets 18, 18
Are arranged in the thick part of the sheet pile tip 11b.

The operation of driving the guide pile 11 into the ground will be described below. First, the jet pipe 16,
The other end of 16 is connected to the high-pressure water supply port 12a, and a high-pressure hose (not shown) is connected. Similarly, the other end of the compressed air pipe (not shown) is connected to the compressor.

Next, the guide pile 11 is suspended using a crane, and is built at the driving position. Then, the vibro-hammer gripping portion 14 of the guide pile 11 is chucked by a vibro-hammer (not shown), high-pressure water is injected from high-pressure water injection ports 17, 17 at the tip of the jet pipes 16, 16, and compressed air is discharged from compressed air outlets 18, 18. The driving of the guide pile 11 is started using the vibration of the vibratory hammer while blowing. At this time, the high-pressure water injection ports 17, 17 and the compressed air outlet 1
8 and 18 are arranged in the thick part of the sheet pile tip 11b, the driving surface of the tip of the guide pile 11 and the jetting direction of the high-pressure water from the jet pipes 16 and 16 completely coincide with each other. An efficient driving work of the pile 11 can be performed. In addition, there is no fear that the press-in resistance increases due to the jet pipes 16, 16 and the pipe for compressed air.

The excavated pieces of earth and sand generated by injecting the high-pressure water from the high-pressure water injection ports 17 and 17 and hitting the bit tip 13 simultaneously rise in the grooves 19 and 19 by the pressure of the compressed air jetted. Released to the surface. A plurality of grooves 19 formed on the inner surface of the guide pile 11;
Reference numeral 19 has a function of discharging the excavated pieces and draining the injected water. Therefore, there is no danger that the ground will collapse due to the pressure of the high-pressure water even during construction on an inclined ground.

After the driving of the guide pile 11 has progressed to a predetermined level, the injection of the high-pressure water and the injection of the compressed air from the high-pressure water injection port 17 and the compressed air outlet 18 and the vibration of the vibratory hammer are stopped. With the guide pile 11 held, the guide pile 11 is pulled out, and the sheet pile is driven into the hole formed by the guide pile 11 to complete the driving of one steel sheet pile. The following section 11a,
The same process is repeated while interlocking the 11a with each other, and the driving operation of the steel sheet pile is continued.

FIG. 7 shows a guide pile 2 of the H steel pile type according to the present invention.
1, a side view showing the case applied to FIG. 1, FIG.
9 is a right side view, FIG. 10 is a top view, FIG. 11 is a sectional view taken along line EE of FIG. 7, and FIG. 12 is a sectional view taken along line FF of FIG.

As in the case of the steel sheet pile type case, a plurality of bit chips 13 made of cemented carbide are fixed to the end face in the driving direction of the H steel tip portion 21b. 21c is an H steel main body, 22 is a manifold for high pressure water and compressed air, and 24 is a vibro hammer gripping part. The manifold 22 has a high-pressure water supply port 22a and a compressed air inlet 22b.

A plurality of notches 25, 25 are formed in the H steel body 21c near the H steel tip 21b, and a jet pipe 26 for high-pressure water or a compressed pipe for compressed air is formed in the notches 25, 25. The pipe 26a (see FIG. 10) is bent and fitted. FIG. 1 is a cross-sectional view taken along line FF of FIG.
As shown in FIG. 2, the jet pipe 26 or the compressed air pipe 26a is arranged and fixed along the inner wall surface of the H steel body 21c, and is a cross-sectional view taken along the line EE in FIG.
As shown in FIG. 7, the jet pipe 26 or the compressed air pipe 26a is bent and fitted into a notch 25 formed near the H-steel tip 21b, and the H-steel tip 21b is bent.
b reaches the end face in the driving direction as embedded in the thick portion of b. The other end of the jet pipe 26 is connected to a high-pressure water supply port 22a, and a pipe 26a for compressed air is connected to a compressed air inlet 22b.

As shown in FIG. 8, a plurality of grooves 29 are formed on the inner surface of the guide pile 21 so as to extend from the H steel tip 21b to the H steel main body 21c. 2
7, 27 are high-pressure water injection ports, 28, 28 are compressed air outlets, and these high-pressure water injection ports 27, 27 and compressed air outlets 28, 28 are arranged in the thick portion of the H steel tip 21b. .

The mode of operation of driving the guide pile 21 into the ground is basically the same as the mode of operation of the guide pile 11 of the steel sheet pile type.
After being suspended at the setting position, the vibratory hammer grips the vibro-hammer gripping portion 24 of the guide pile 21, injects high-pressure water from the high-pressure water injection ports 27, 27, and compresses the compressed air from the compressed air outlets 28, 28. Driving is performed using the vibration of a vibratory hammer while blowing air. The excavated pieces of earth and sand generated by the injection of the high-pressure water and the impact of the bit chips are compressed by the pressure of the compressed air into the grooves 29 and 29.
It rises inside 29 and is discharged to the surface of the earth. After the driving of the guide pile 21 has progressed to a predetermined level, the injection of high-pressure water, the ejection of compressed air, and the vibration of the vibratory hammer are stopped, the guide pile 21 is pulled out, and the guide pile 21 is previously inserted into the hole formed by the guide pile 21. The prepared H steel pile is driven in, and the driving of one H steel pile is completed. Hereinafter, the same steps are repeated to continue the driving operation.

13 is a side view showing a case in which the present invention is applied to a steel pipe pile type guide pile 31, FIG. 14 is a left side view thereof, FIG. 15 is a right side view thereof, and FIG. 16 is a line GG of FIG. 17 is a sectional view taken along line HH in FIG.

A plurality of bit chips 13 made of cemented carbide are fixed to the end face in the driving direction of the steel pipe tip 31b. 31c is a steel pipe pile main body, 32 is a manifold for high pressure water and compressed air, and 34 is a vibro hammer gripping part. The manifold 32 has a high-pressure water supply port 32a and a compressed air inlet 32b.

Steel pipe pile main body 31c near steel pipe tip 31b
Are formed with a plurality of notches 35, 35, and jet pipes 36, 3 for high-pressure water are formed in the notches 35, 35.
6 or piping 36a for compressed air is bent and fitted. The steel pipe pile main body 31c has holes 40, 40 for removing excess water and air.

FIG. 1 is a sectional view taken along the line H--H in FIG.
As shown in FIG. 7, the jet pipe 36 or the pipe 36a for compressed air is disposed and fixed along the outer wall surface of the steel pipe pile main body 31c, and the jet pipe 36 or the pipe 36a for compressed air is located near the steel pipe tip 31b. It is fitted into the formed notch portion 35 while bending, and as shown in FIG. 16 which is a cross-sectional view taken along the line GG in FIG. The end face has been reached. The other end of the jet pipe 36 is a high-pressure water supply port 32a.
Is connected to the compressed air inlet 3.
2b.

Further, as shown in FIG.
A plurality of grooves 39, 39 are formed on the inner surface of the steel pipe tip 31.
It extends from b to the steel pipe pile main body 31c. Reference numerals 37, 37 denote high-pressure water jets, and 38, 38 denote compressed air outlets. These high-pressure water jets 37, 37 and the compressed air outlets 38, 38 are arranged in the thick portion of the steel pipe tip 31b.

The operation mode of driving the guide pile 31 into the ground is basically the same as the operation mode of the guide piles of the steel sheet pile type and the H steel pile type. After being suspended at the casting position, the vibratory hammer grips the vibratory hammer gripping portion 34 of the guide pile 31, injects high-pressure water from the high-pressure water injection ports 37, 37 and compresses the compressed air from the compressed air outlets 38, 38. Driving is performed using the vibration of a vibratory hammer while blowing air. Excavated pieces of earth and sand generated by the injection of the high-pressure water and the impact of the bit chips rise in the grooves 39 and 39 by the pressure of the compressed air and are discharged to the ground.

After the driving of the guide pile 31 has progressed to a predetermined level, the injection of high-pressure water, the ejection of compressed air, and the vibration of the vibratory hammer are stopped, and the guide pile 31 is pulled out. The steel pipe pile prepared in advance is driven into the section, and the driving of one steel pipe pile is completed. Hereinafter, the same process is repeated to drive the steel pipe pile.

FIGS. 18 (a) to 18 (i) are schematic process diagrams showing an actual operation procedure using a steel pipe pile type guide pile 31. The guide pile 31 has a high pressure hose 41 and an air hose 4 attached thereto.
2, and the guide pile 31 is hung by the hook 43 of the crane and set at the driving position as shown in FIG. Next, as shown in FIG.
The upper end of the guide pile 31 is chucked by using, the supply of high-pressure jet water and compressed air is started by using the high-pressure hose 41 and the air hose 42, and the driving of the guide pile 31 is started by using the vibration of the vibratory hammer. I do.

After the guide pile 31 is driven to a predetermined position as shown in FIG. 4D, the supply of high-pressure jet water and compressed air is stopped, and the driving of the vibratory hammer 44 is stopped. Next, as shown in FIG.
3, the guide pile 31 is lifted to the ground surface, and the main pile 4 is placed above the hole 46 excavated by the guide pile 31 as shown in FIG.
Set 5

As shown in FIG. 3G, the main pile 45 is gripped by the vibro hammer 44 and the driving into the hole 46 is started. After driving the main pile 45 to a predetermined position as shown in FIG. 6H, the driving of the vibratory hammer 44 is stopped, and as shown in FIG. finish.

FIGS. 19 (a) to 19 (d) are schematic process diagrams showing the actual placing order using the steel pile type guide pile 11, and the section 11 of the driven reference sheet pile 51 is shown.
a into the section 11a of the guide pile 11,
As described above, the guide pile 11 is driven by using the vibration of the vibratory hammer while supplying high-pressure jet water and compressed air, and only the guide pile 11 is pulled up to the ground surface by the hook of the crane as shown in FIG. As shown in FIG. 3C, the main pile 52 is driven into the hole excavated by the guide pile 11 using a vibro hammer. Furthermore, after driving the main sheet pile 52 to a predetermined position as shown in FIG. 4D, the driving of the vibratory hammer is stopped, and the driven pile sheet 52 is used as a reference sheet pile, and a guide pile is attached to the section 11a of the reference sheet pile. 1
The guide pile 11 is driven in accordance with the above-described operation mode by engaging the first section 11a. By repeating this operation, the driving of the main sheet pile is continued.

[0040]

As described above in detail, according to the pile driving method with water jet and the guide pile in the method according to the present invention, when driving the guide pile into the ground, the high pressure water is injected from the high pressure water injection port. By injecting water and ejecting compressed air from the compressed air outlet while driving the guide pile together with the vibration of the vibratory hammer, the excavated soil and water rise in the groove due to the pressure of the compressed air. Since it is discharged to the surface of the ground, it is possible to eliminate the danger that the ground will collapse due to the pressure of the high-pressure water, even during construction on an inclined ground.

Further, since the high-pressure water injection port and the compressed air outlet are arranged at the thick portion of the tip of the pile, the driving surface of the tip of the guide pile and the jet direction of the high-pressure water from the jet pipe completely match. Thus, the guide pile can be efficiently driven without the phenomenon of increasing the press-in resistance due to the jet pipe.

The present invention can be used not only for ordinary steel sheet piles, but also as a method for driving H steel piles and other ultra-long and ultra-large steel pipe piles and steel sheet piles. By making the injection port of the pile coincide with that of the pile, it is possible to perform efficient press-fitting work of the pile, and by providing piping for compressed air in addition to jet pipe for high-pressure water, drainage of excavated pieces It is possible to provide a construction method capable of efficiently draining the soil and the injected water and a guide pile in the construction method.

[Brief description of the drawings]

FIG. 1 is a side view showing a case in which the present invention is applied to a steel sheet pile type guide pile.

FIG. 2 is a left side view of FIG.

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a sectional view taken along the line BB of FIG. 1;

FIG. 5 is a sectional view taken along the line CC of FIG. 4;

FIG. 6 is a sectional view taken along the line DD of FIG. 4;

FIG. 7 is a side view showing a case in which the present invention is applied to an H steel pile type guide pile.

FIG. 8 is a left side view of FIG. 7;

FIG. 9 is a right side view of FIG. 7;

FIG. 10 is a top view of FIG. 7;

FIG. 11 is a sectional view taken along the line EE in FIG. 7;

FIG. 12 is a sectional view taken along the line FF of FIG. 7;

FIG. 13 is a side view showing a case in which the present invention is applied to a steel pipe pile type guide pile.

FIG. 14 is a left side view of FIG.

FIG. 15 is a right side view of FIG.

FIG. 16 is a sectional view taken along the line GG of FIG. 13;

FIG. 17 is a sectional view taken along the line HH in FIG. 13;

FIG. 18 is a schematic process diagram showing an operation procedure using a steel pipe pile type guide pile.

FIG. 19 is a schematic process diagram showing a placing order using a steel sheet pile type guide pile.

FIG. 20 is a partial perspective view showing an example of a steel sheet pile used in a conventional JV method.

[Explanation of symbols]

 11, 21, 31 ... guide pile 11a ... section 11b ... sheet pile tip 11c ... sheet pile body 12, 22, 32 ... manifold 12a, 22a, 32a ... high-pressure water supply port 14, 24, 34 ... vibro hammer gripping part 13 ... bit Chip 15, 25, 35 ... Notch 16, 26, 36 ... Jet pipe 17, 27, 37 ... High-pressure water jet 18, 28, 38 ... Compressed air outlet 19, 29, 39 ... Groove 21b ... H steel tip 21c ... H steel body 22b, 32b ... Compressed air inlet 26a, 36a ... Pipe for compressed air 31b ... Steel pipe tip 31c ... Steel pipe pile body 40 ... Hole 41 ... High pressure hose 42 ... Air hose 44 ... Vibro hammer 45 ... Main pile 51 ... Standard sheet pile 52 ... Main sheet pile reference number P2958

Claims (7)

[Claims] 1. A method for driving a pile into the ground with a vibratory hammer or the like in combination with injection of high-pressure water by a water jet, wherein a jet pipe for high-pressure water and a pipe for compressed air are provided along the longitudinal direction of the pile. At the same time, a plurality of grooves are formed on the inner surface of the pile, and the pile is driven using a combination of high-pressure water injection, compressed air injection, and vibration of a vibratory hammer. Pile driving method combined with water jet, which is discharged to the sea. 2. A method of driving a pile into the ground with a vibratory hammer or the like in combination with injection of high-pressure water by a water jet, wherein a jet pipe for high-pressure water and a pipe for compressed air are provided along the longitudinal direction of the pile. At the same time, a plurality of grooves are formed on the inner surface of the pile, and high-pressure water is injected from the high-pressure water injection port at the tip of the jet pipe, and compressed air is ejected from the compressed air outlet. A water jet combined pile driving method, characterized in that excavated pieces of water and earth and sand injected by the pressure of compressed air are discharged to the surface through a groove. 3. A guide pile is driven into the ground by vibratory hammer or the like together with high-pressure water injection by a water jet, and after the guide pile is driven to a predetermined level, the guide pile is pulled out and formed by the guide pile. In this construction method, the main pile was driven into the hole, and a jet pipe for high-pressure water and a pipe for compressed air were provided along the longitudinal direction of the guide pile, and a plurality of pipes were installed on the inner surface of the pile. A groove is formed, high-pressure water is injected from the high-pressure water injection port at the end of the jet pipe, and compressed air is ejected from the compressed air outlet. The guide pile is driven to a predetermined level while discharging the excavated water and soil excavated to the surface through the groove, and then the guide pile is pulled out. Water jet combination piling construction method, characterized in that the pouring is implanted the pile by using the vibration of a vibro-hammer in the hole portion formed by the pile. 4. A guide pile is driven into the ground using both high-pressure water jetting with a water jet and a vibratory hammer.
After the guide pile is driven to a predetermined level, the guide pile is pulled out, and the main pile is driven into the hole formed by the guide pile and driven into the hole. A guide pile in a water jet combined pile driving method, wherein an injection port is arranged in a thick portion of the guide pile, and a position of a driving surface at a tip of the guide pile and an injection port of high-pressure water are matched. 5. A guide pile is driven into the ground using a combination of high-pressure water jetting with a water jet, compressed air jetting, and a vibratory hammer, and after the guide pile is driven to a predetermined level, the guide pile is pulled out. In a guide pile in which a main pile is driven into a hole formed by a pile, a high-pressure water injection port and a compressed air outlet at a tip of the guide pile are arranged in a thick portion of the guide pile, A guide pile in a pile driving method combined with water jet, wherein a position of a driving face of a tip of a guide pile is matched with an injection port of high-pressure water and an injection port of compressed air. 6. The guide pile according to claim 4, wherein a plurality of grooves for returning high-pressure water to the surface of the ground are formed on the inner surface of the pile. 7. A plurality of cutouts are formed along the longitudinal direction of the guide pile, and a jet pipe for high-pressure water and a pipe for compressed air are fitted into the cutouts, and a high-pressure water injection port and a compressed air outlet are inserted. A guide pile in a pile driving method combined with water jet, wherein a plurality of grooves for returning high-pressure water to the surface of the pile are formed on the inner surface of the pile at a thick portion at the tip of the pile.