JP5981792B2 - Construction method of press-fit continuous wall - Google Patents

Description

  The present invention relates to a method for forming a press-fit continuous wall.

  For soil walls, water barriers such as dams and dogs, underground walls of buildings such as basements and underground malls of buildings, and outer walls of common trenches, mixed soil cement underground continuous walls using the in-situ soil mixing method are the mainstream. ing. However, when this construction method is applied to hard ground, an auxiliary construction method such as preceding drilling is often required, which may lead to an increase in construction period and construction cost. In addition, there is a concern that it is difficult to create a continuous wall with a uniform wall thickness.

On the other hand, a method in which a steel pipe or casing pipe is driven into the ground as a formwork, the inside of the pipe is excavated with a hammer grab or auger, a reinforcing bar or steel material is built into the excavation hole, concrete is injected, and then the steel pipe is pulled out Or, a method of drawing a steel pipe or the like while injecting concrete, or a method of building a continuous wall by injecting concrete into a drilling hole and then pulling out the steel pipe or the like and then building a reinforcing bar or steel material is known. Yes.
For example, a casing excavator embeds the casing in the ground, performs internal excavation, inserts a pile body having a joint into the casing, and further pulls out the casing while filling with soil cement, then the adjacent pile body There has been disclosed a method of creating a continuous wall with improved water blocking properties by inserting a connecting member into a joint between them and connecting them (see, for example, Patent Document 1).
In addition, after the pile pile is hardened, the pile pile is hardened, and a steel pipe with a cutting blade is embedded at the tip so as to straddle between adjacent pile piles. A method is disclosed in which a continuous wall with improved water blocking properties is formed by injecting a forming grout (see, for example, Patent Document 2).
According to these methods, it is possible to create a continuous wall with improved water blocking properties, and to make the wall thickness of the continuous wall uniform.

JP 2002-188143 A JP 52-98308 A

However, in the case of the above-mentioned Patent Document 1, a necessary number of pile bodies and connecting members having joints are manufactured in advance, and the work that requires carrying these large materials to the construction site is complicated, and adjacent pile bodies There was a problem that the work of having to insert the pile body into the casing was complicated while aligning the joints so that the joints between them could be connected by a connecting member.
Moreover, in the case of the said patent document 2, since the steel pipe of the same diameter as a soil pile is embed | buried between adjacent soil piles, there existed a problem that cost started.
Furthermore, these construction methods require land preparation for using a large pile driver and prior work, such as the construction of uneven terrain and a work gantry for operating the pile driver, which have a large impact on the surrounding area. In addition, there is a risk of delaying the construction period and increasing the construction cost.

  An object of the present invention is to provide a method for producing a press-fit continuous wall that can be constructed efficiently and inexpensively.

In order to solve the above problems, the invention described in claim 1 is a method for forming a press-fitting continuous wall,
A saddle having a plurality of clamping devices for expanding and gripping the upper end of an existing steel pipe pile embedded in the ground from the inside, a slide base movable back and forth with respect to the saddle, and the slide base A leader mast that can pivot left and right, a chuck device that is attached to the front surface of the leader mast so as to be movable up and down and holds a steel pipe pile, and a main hydraulic cylinder that drives the chuck device to move up and down relative to the leader mast. Equipped with a pile press-in device that can self-propell on an existing steel pipe pile row buried in the ground and obtain a reaction force from the steel pipe pile row, or press-fit or rotationally press the steel pipe pile into the ground, A step of press-fitting the steel pipe pile at a position forward of the traveling direction adjacent to the steel pipe pile row;
A base part having a gripping part for gripping a pile head of a steel pipe pile to be press-fitted by the pile press-fitting device; a pedestal rotatably attached to the base part; a cylindrical body erected on the pedestal; An elevating mechanism fixed to the tubular body, a drilling device that is suspended by the elevating mechanism and is movable up and down inside the tubular body and the steel pipe pile, and a steel pipe that is provided in the pedestal and is rotationally press-fitted In synchronization with the rotation of the pile, using a continuous excavation and earthing device having a rotation drive mechanism that rotates the cylindrical body at a constant speed in the opposite direction to the steel pipe pile, according to the press-fitting of the steel pipe pile , Excavating and discharging the steel pipe pile,
Moving the pile press-fitting device forward in the traveling direction on the steel pipe pile row;
In the steel pipe pile in which the clamp device is not gripped and the pile press-fitting device has not obtained a reaction force at the rear of the pile press-fitting device, the step of charging the reinforcing core material and injecting a curable material; ,
Using the pile press-device before the curable material is cured, after had pulled disconnect grabbed steel pipe pile in which the curable material is injected by the chuck device by inverting the reader mast, the reader mast Turning the chuck device forward in the direction of travel, press-fitting the pulled steel pipe pile into a position in the forward direction adjacent to the steel pipe pile row ; and
A step of drilling a hole with a smaller diameter than the steel pipe pile so as to straddle between pile bodies formed by hardening the curable material;
Inserting a clogging member into the drilled hole;
It is characterized by including.

The invention described in claim 2 is the method for forming a press-fitting continuous wall according to claim 1,
The padding member is a bag-like elastic body, and includes a step of filling a filler into the bag-like elastic body inserted into the drilled hole.

The invention according to claim 3 is the method for constructing the press-fitting continuous wall according to claim 1 or 2,
A reaction force is obtained from the reinforcing core material, and the drilling is performed.

The invention according to claim 4 is the method for forming a press-fitted continuous wall according to any one of claims 1 to 3,
The drilling is performed when the pile body made of the curable material is young.

The invention according to claim 5 is the method for forming a press-fitted continuous wall according to any one of claims 1 to 4,
The method includes a step of observing the inside of the steel pipe pile before charging the reinforcing core material and injecting the curable material into the steel pipe pile.

  According to the present invention, a continuous wall can be constructed efficiently and inexpensively.

It is explanatory drawing which shows a construction process regarding the construction method of the press-fit continuous wall using a pile press-fit apparatus. It is explanatory drawing which shows a construction process regarding the construction method of the press-fit continuous wall using a pile press-fit apparatus. It is explanatory drawing which shows a construction process regarding the construction method of the press-fit continuous wall using a pile press-fit apparatus. It is explanatory drawing which shows a construction process regarding the construction method of the press-fit continuous wall using a pile press-fit apparatus. It is explanatory drawing which shows a construction process regarding the construction method of the press-fit continuous wall using a pile press-fit apparatus. It is explanatory drawing which shows a construction process regarding the construction method of the press-fit continuous wall using a pile press-fit apparatus. It is sectional drawing of the continuous wall and steel pipe pile in the VII-VII line of FIG. It is an enlarged view of the water stop body part in a continuous wall, and shows the water stop body (b) which has a cylindrical water stop body (a) and a protrusion on the outer peripheral surface. It is the modification of a continuous wall, The thing (a) using the water stop body which consists of porous concrete, and the thing (b) which uses the water stop body which consists of crushed stone are shown. It is the schematic which shows the structure of a continuous excavation earth removal apparatus. It is the schematic which shows the structure of a construction assistance apparatus.

  Hereinafter, an embodiment of a press-fitting continuous wall forming method according to the present invention will be described in detail with reference to the drawings.

First, a pile press-fitting device used for creating a continuous wall will be described. The pile press-fitting device is a device that press-fits or press-fits a predetermined pile (such as a steel pipe pile) (hereinafter simply referred to as “press-fit”) or pulls out the pile.
As shown in FIG. 1, the pile press-fitting device 10 has a plurality (for example, two) of gripping the upper end of an existing steel pipe pile P (steel pipe pile row) embedded in the ground by expanding the diameter from the inside. A saddle 12 having a clamp device 11..., A slide base 13 that can move back and forth with respect to the saddle 12, a leader mast 14 that can be swung left and right on the slide base 13, and can be raised and lowered to the front of the leader mast 14. And a main hydraulic cylinder 16 that drives the chuck device 15 up and down with respect to the leader mast 14.
The pile press-fitting device 10 obtains a reaction force from the steel pipe pile row held by the clamp device 11, lowers the chuck device 15 holding the steel pipe pile P, and releases the steel pipe pile P to raise the chuck device 15. By repeating this, the steel pipe pile P is repeatedly inserted into the ground for each stroke, and the steel pipe pile P is buried in the ground.
Further, by moving the slide base 13 forward, the chuck device 15 is moved to the front side without moving the saddle 12, and the tip of the existing steel pipe pile P held by the leading clamp device 11 is moved. Two steel pipe piles P can be press-fitted side by side.
The pile press-fitting device 10 performs an operation of press-fitting a new steel pipe pile P at the tip of the existing steel pipe pile P with the chuck device 15 and an operation of gripping and releasing the upper end portion of the existing steel pipe pile P by the clamp device 11. By combining, it can self-propell on the steel pipe pile row which consists of the existing steel pipe pile P.
In addition, since the structure and operation | movement of the pile press-fit apparatus 10 are the same as that of a conventionally well-known thing, it is not explained in full detail here.

  Next, a method for creating a continuous wall using the pile press-fitting device 10 will be described.

As shown in FIG. 1, several steel pipe piles P are embedded in the ground in advance, and the pile press-fitting device 10 is placed on the existing steel pipe piles P (steel pipe pile rows). In addition, the steel pipe pile P previously embedded in the ground may be press-fitted by a pile press-fitting device 10 placed on a work table (not shown), or may be press-fitted by another pile driving machine. These existing steel pipe piles P are assumed to be excavated and excavated into cavities.
And the steel pipe pile P is built in the chuck apparatus 15 with a crane etc., and the new steel pipe pile P is press-fit in the position adjacent to a steel pipe pile row | line | column. By press-fitting or rotating-pressing the steel pipe pile P, the earth and sand and the cutting sludge on the outer periphery of the steel pipe pile are pressed against the ground and consolidated, so that the hole wall and the surrounding ground are not loosened. Therefore, the steel pipe pile P can be suitably press-fitted with minimum influence on the surrounding ground even if it is a disintegrating ground, a hard ground, or a large depth without being dug up.
Moreover, the continuous excavation earth removing apparatus 1 is installed in the pile head of the upper end of the new steel pipe pile P built in the chuck apparatus 15. FIG.
In addition, it is preferable to attach the cutting blade to the front-end | tip part of the lower end of the steel pipe pile P at the time of rotary press injection.

Next, in accordance with the press-fitting of the steel pipe pile P by the pile press-fitting device 10, the inside of the steel pipe pile P is excavated and discharged by the continuous excavating and discharging apparatus 1.
As shown in FIG. 10, the continuous excavation and earthing device 1 includes a base portion 2 having a grip portion 21 that grips a pile head of the steel pipe pile P, a pedestal 3 rotatably attached to the base portion 2, and a pedestal 3, a tubular body 4 standing upright, an elevating mechanism 6 fixed to the tubular body 4, and an excavation suspended by the elevating mechanism 6 so as to be movable up and down in the tubular body 4 and the steel pipe pile P. The apparatus 7 etc. are provided.
The excavator 7 includes a screw auger 71, and an opening 41 for discharging the soil excavated by the screw auger 71 is formed in the tubular body 4.
Further, the pedestal 3 is provided with a rotation drive mechanism 5 that rotates the cylindrical body 4 at a constant speed in a direction opposite to the steel pipe pile P in synchronization with the rotation of the steel pipe pile P that is rotationally press-fitted.
In addition, since the structure and operation | movement of the continuous excavation earth removal apparatus 1 are the same as that of a conventionally well-known thing, it is not explained in full detail here.
In the present embodiment, the continuous excavation and earthing device 1 is used to excavate the inside of the steel pipe pile P, and the excavated earth is discharged. However, excavation and earthing using other devices such as an auger and a hammer grab is performed. It may be.

Then, after the steel pipe pile P reaches a predetermined depth, the inside of the steel pipe pile P is excavated and excavated to become a cavity, and after the press-fitting of the steel pipe pile P is completed, as shown in FIG. The continuous excavation and earth removal device 1 built in the chuck device 15 and removed from the steel pipe pile P after press-fitting is installed on the pile head of the steel pipe pile P, and the press-fitting work of the pile is continued.
After this, the steel core pile P that has been press-fitted and excavated and discharged is injected with a reinforcing core material and injected with a curable material. Before that, the inside of the steel pipe pile P is observed to construct a continuous wall. It is preferable to check the presence or absence of foreign matter that may interfere with the state of the continuous wall support ground.

When observing the inside of the steel pipe pile P that has become a hollow, for example, a construction auxiliary device 100 as shown in FIG. 11 can be used. The construction auxiliary device 100 is used by being placed inside the steel pipe pile P in a state of being suspended by a crane or the like (not shown).
The construction auxiliary device 100 includes a pressing portion 101 provided on the upper portion, a partition wall portion 102 provided on the lower side of the pressing portion 101, an air supply / exhaust portion 103 that supplies and exhausts air, and an inner side of the steel pipe pile P. An observation unit 104 for observing the image.
The pressing portion 101 includes a contact portion 101 a that advances and retreats by driving of the cylinder and contacts the facing surface of the steel pipe pile P to stabilize the posture of the construction auxiliary device 100.
The partition wall 102 includes an annular elastic body (tube) 102 a that expands in the radial direction of the steel pipe pile P by air pressure and can contact the inner surface of the steel pipe pile P.
The air supply / exhaust portion 103 includes an air supply port 103a provided on the upper plate of the partition wall portion 102 and an exhaust port 103b provided on the lower plate of the partition wall portion 102, and is supplied from the air supply port 103a by a compressor (not shown). The sucked air is sent from the exhaust port 103b. For example, in a state where the annular elastic body 102a is inflated and in close contact with the inner surface of the steel pipe pile P, the ground water existing in the steel pipe pile P is pushed down by supplying compressed air into the steel pipe pile P below the construction auxiliary device 100. Thus, the groundwater level can be lowered.
The observation unit 104 includes an illumination 104a, a camera 104b, and a cleaning nozzle 104c. By remotely operating the observation unit 104, the inside of the steel pipe pile P is illuminated with the illumination 104a, and an image captured by the camera 104b can be observed on the ground monitor. The cleaning nozzle 104c sprays the cleaning liquid and cleans the illumination 104a and the camera 104b.
In addition, since the structure and operation | movement of the construction assistance apparatus 100 are the same as that of a conventionally well-known thing, it is not explained in full detail here.

Next, if there is no abnormality in the steel pipe pile P, as shown in FIG. 3, the reinforcing core material is charged and the curable material G is injected into the steel pipe pile P that has been observed. Here, the steel pipe pile P into which the reinforcing core material is charged and the curable material G is injected is a steel pipe pile P in which the pile press-fitting device 10 does not obtain a reaction force behind the pile press-fitting device 10. Note that the curable material G may be injected after the reinforcing core material is added, or the reinforcing core material may be injected after the curable material G is injected.
As the reinforcing core material, a reinforcing bar or a steel material can be used. The reinforcing core material has substantially the same length as the steel pipe pile P, and the upper end of the reinforcing core material can be used as a scaffold for work.
As the curable material G, concrete, mortar, or the like can be used. In addition, the quality of the pile body (Gp) formed by hardening the curable material G can be stabilized by suppressing mixing of groundwater by using a separation reducing agent in combination.

Next, as shown in FIG. 4, the leader mast 14 of the pile press-fitting device 10 is reversed, and the steel pipe pile P into which the curable material G is injected is gripped by the chuck device 15, and before the curable material G is cured, The steel pipe pile P into which the curable material G is injected is pulled out.
Here, the phrase “before the curable material G is cured” refers to a state in which the curable material G has fluidity.
Further, when the steel pipe pile P is pulled out while being rotated, the centering of the reinforcing core material can be corrected and the flow of the curable material G can be promoted, and the covering of the reinforcing core material and the close contact with the ground are ensured. Therefore, it is preferable. In addition, the hardenable material G is in close contact with the ground, and a solid and therefore high quality pile body (Gp) can be constructed by rebounding the hole wall compacted by press fitting.
In the above description based on FIG. 3, the steel pipe pile P is extracted after the reinforcing core material and the curable material G are put into the steel pipe pile P. However, the present invention is not limited to this. For example, the curable material G may be injected and filled while pulling out the steel pipe pile P into which the reinforcing core material is put. Further, after pulling out the steel pipe pile P into which the curable material G is injected, the reinforcing core material may be introduced. Further, the curable material G may be injected while the steel pipe pile P is pulled out, and the reinforcing core material may be put into the pile hole filled with the curable material G.

Next, as shown in FIG. 5, the steel pipe pile P extracted by the pile press-fitting device 10 is repeatedly used so as to be press-fitted in front of the steel pipe pile row.
And the pile press-fit apparatus 10 self-propels on a pile row | line and repeats the press-fit operation of a pile.
Moreover, after observing and confirming the presence or absence of abnormality in the steel pipe pile P behind the traveling direction of the pile press-fitting device 10, the operation of charging the reinforcing core material and injecting the curable material G into the steel pipe pile P is repeated.
In the process of repeating these operations, the curable material G filled in the pile hole is cured to become a pile body Gp.

Next, after a plurality of pile bodies Gp formed by curing the curable material G filled in the pile holes are formed, drilling is performed so as to straddle the pile bodies Gp. The depth of the hole to be drilled is a required depth determined from the water permeability of the ground.
In addition, when performing the drilling straddling between pile bodies Gp waiting for the strength expression that the curable material G is cured, it is preferable to perform drilling when the pile body Gp made of the curable material G is young. If it is a young material age, it will be easy to give a hole, and a part of each pile body Gp can be suitably scraped between the hardened pile bodies Gp.
In addition, if a hole is drilled while obtaining a reaction force from the reinforcing core material protruding or exposed at the head of the pile body Gp, there is no need to separately assemble a scaffold for drilling work. The work can be suitably performed.
Then, a bag-like elastic body (S1), which is a filling member, is inserted into the drilled hole, and the bag-like elastic body is filled with a filler (S2), as shown in FIGS. The water blocking body S is formed between the pile bodies Gp. The waterstop S has the depth of the drilled hole.
The bag-like elastic body S1 is a long hollow member made of an elastic material such as rubber or urethane, and has substantially the same length as the drilled hole. For the filler S2, for example, a curable material such as mortar or a polymer resin material can be used.
Specifically, as shown in FIG. 8A, a filler S2 is pressurized and filled into a cylindrical bag-like elastic body S1 inserted into the drilled hole, and the bag-like elastic body S1 is elastically loaded. By expanding the diameter of the material and curing the filler S2 while maintaining the pressure, the water-stopping body S brought into close contact between the pile bodies Gp can be formed, and a high water-stopping property can be secured.
Further, as shown in FIG. 8B, when a bag-like elastic body S1 having a plurality of protrusions formed on the outer peripheral surface is used, the filling material S2 is pressurized and filled in the bag-like elastic body S1. Since the countless protrusions are pressed against the pile body Gp and the ground and the contact area increases, the water stoppage between the pile bodies Gp by the water stop body S can be further improved.
In this case, it is also necessary to separately assemble a working scaffold by forming the waterstop S while obtaining a reaction force from the reinforcing core material that is caught or protruded from the head of the pile body Gp. Absent.

  Thus, while forming a plurality of pile bodies Gp in a desired range and forming a waterstop S between the pile bodies Gp, a continuous wall in which the pile bodies Gp and the waterstop S are alternately connected can be constructed. .

Thus, after forming the multiple pile bodies Gp using the pile press-fitting device 10, the bag-like elastic body S1 is inserted into the hole drilled so as to straddle between the adjacent pile bodies Gp, and the bag-like elasticity A continuous wall can be constructed by pressurizing and filling the filler S2 in the body S1 to form the waterstop S that is in close contact with the pile bodies Gp on both sides.
And the continuous wall of the structure where the pile body Gp and the water stop body S closely_contact | adhered becomes difficult to leak water between the pile body Gp and the water stop body S, and has a high water stop.

As described above, according to the method for forming a press-fitting continuous wall according to the present invention, a continuous wall having a high water-stopping property can be constructed more efficiently and inexpensively than in the past.
In particular, according to the present invention, a high-quality continuous wall with a high water-stopping property that is in close contact with the ground while diverting steel pipe pile rows that have been press-fitted into the ground even in collapsible ground, hard ground, and narrow places can be obtained in a short time and inexpensively. Can be applied to a wide range of applications, such as retaining walls, impermeable walls such as dams and dogs, underground walls of subways and buildings, underground streets, and outer walls of common grooves, etc. .

The present invention is not limited to the above embodiment.
The present invention can also be applied to creation of a continuous wall used as a landslide prevention wall, a breakwater or a seawall.
The landslide prevention wall requires a function of reducing the water pressure acting on the back of the wall, and the breakwater and tide bank also require a wave extinguishing function. In these cases, for example, as shown in FIG. You may make it provide the water stop body S by inserting the column-shaped (or pile-shaped) filling member which consists of porous concrete in the hole drilled so that it may straddle between the matching pile bodies Gp.
Moreover, as shown in FIG.9 (b), outer frame member S3 (for example, a cylindrical scissors member or bag member) as a clogging member in the hole drilled so that it may straddle between adjacent pile bodies Gp may be used. Then, the waterstop S may be provided by filling the crushed stone S4 inside the outer frame member S3. Note that the water blocking body S may be provided by using the crushed stone S4 packed in a bag without using the outer frame member S3 as a filling member, and throwing the crushed stone S4 into the drilled hole.
The waterstop S made of porous concrete, the waterstop S made of crushed stone S4 and gravel are water-permeable, and the waterstop S using an elastic material such as rubber or urethane is completely fixed. Here, the strong waterstop having water is distinguished as a weak waterstop (semi-waterstop).
Such a continuous wall (see FIG. 9) in which the weak water blocking bodies S and the pile bodies Gp are alternately arranged is preferably used for applications where complete water blocking is not required and applications where water is required to exude to some extent. . And it is preferably used as a landslide prevention wall, a breakwater, and a seawall.
In particular, the water stop body S made of porous concrete, the water stop body S formed with crushed stone S4 and gravel are relatively inexpensive, and if such a weak water stop body S, the construction accuracy to be in close contact with the pile body Gp is required. Therefore, it can be constructed relatively easily.
That is, if it is the continuous wall in which the weak water stop body S and the pile body Gp were located in a line alternately, there exists a merit which can be constructed | assembled simply and at low cost than before.

As described above, by appropriately selecting a clogging member according to the use of the continuous wall, it is desirable to have a retaining wall that is desired to have a high water-stopping property, a water-impervious wall such as a dam or a dog, a subway or a basement of a building, an underground mall It is possible to construct external walls such as joint grooves, or to construct landslide deterrent walls, breakwaters, and seawalls that do not require high waterstop.
Therefore, according to the press-fitting continuous wall construction method according to the present invention, a continuous wall that can be used for various purposes can be constructed more efficiently and inexpensively than in the past.

In addition, in the above embodiment, although the case where one pile press-in apparatus 10 was mounted on a steel pipe pile row | line and the continuous wall was created was demonstrated to the example, this invention is limited to this. Instead, the continuous wall may be constructed using two pile press-fitting devices 10 for pile press-in and pile pull-out.
Moreover, if the crane apparatus for suspending the steel pipe pile P expands on the steel pipe pile row and the reinforcing core member protruding or exposed on the head of the pile body Gp so as to be able to run on its own, it is possible to perform further suitable construction. It becomes possible.

  In addition, it is needless to say that other specific detailed structures can be appropriately changed.

DESCRIPTION OF SYMBOLS 1 Continuous excavation earth removal apparatus 10 Pile press-fit apparatus 100 Construction assistance apparatus P Steel pipe pile G Hardening material Gp Pile body S Water stop body S1 Bag-like elastic body (filling member)
S2 Filler S3 Outer frame member (clogging member)
S4 Crushed stone (clogging material)

Claims (5)

A saddle having a plurality of clamping devices for expanding and gripping the upper end of an existing steel pipe pile embedded in the ground from the inside, a slide base movable back and forth with respect to the saddle, and the slide base A leader mast that can pivot left and right, a chuck device that is attached to the front surface of the leader mast so as to be movable up and down and holds a steel pipe pile, and a main hydraulic cylinder that drives the chuck device to move up and down relative to the leader mast. Equipped with a pile press-in device that can self-propell on an existing steel pipe pile row buried in the ground and obtain a reaction force from the steel pipe pile row, or press-fit or rotationally press the steel pipe pile into the ground, A step of press-fitting the steel pipe pile at a position forward of the traveling direction adjacent to the steel pipe pile row;
A base part having a gripping part for gripping a pile head of a steel pipe pile to be press-fitted by the pile press-fitting device; a pedestal rotatably attached to the base part; a cylindrical body erected on the pedestal; An elevating mechanism fixed to the tubular body, a drilling device that is suspended by the elevating mechanism and is movable up and down inside the tubular body and the steel pipe pile, and a steel pipe that is provided in the pedestal and is rotationally press-fitted In synchronization with the rotation of the pile, using a continuous excavation and earthing device having a rotation drive mechanism that rotates the cylindrical body at a constant speed in the opposite direction to the steel pipe pile, according to the press-fitting of the steel pipe pile , Excavating and discharging the steel pipe pile,
Moving the pile press-fitting device forward in the traveling direction on the steel pipe pile row;
In the steel pipe pile in which the clamp device is not gripped and the pile press-fitting device has not obtained a reaction force at the rear of the pile press-fitting device, the step of charging the reinforcing core material and injecting a curable material; ,
Using the pile press-device before the curable material is cured, after had pulled disconnect grabbed steel pipe pile in which the curable material is injected by the chuck device by inverting the reader mast, the reader mast Turning the chuck device forward in the direction of travel, press-fitting the pulled steel pipe pile into a position in the forward direction adjacent to the steel pipe pile row ; and
A step of drilling a hole with a smaller diameter than the steel pipe pile so as to straddle between pile bodies formed by hardening the curable material;
Inserting a clogging member into the drilled hole;
A method for constructing a press-fitted continuous wall, comprising:   The press-fitting continuous wall according to claim 1, wherein the filling member is a bag-like elastic body, and includes a step of filling the bag-like elastic body inserted into the drilled hole. How to build.   The method for forming a press-fitted continuous wall according to claim 1 or 2, wherein a reaction force is obtained from the reinforcing core member and the hole is formed.   The method for forming a press-fit continuous wall according to any one of claims 1 to 3, wherein the drilling is performed when the pile body made of the curable material is young.   The press-fitting according to any one of claims 1 to 4, further comprising a step of observing the inside of the steel pipe pile before charging the reinforcing core material and injecting the curable material into the steel pipe pile. How to create a continuous wall.

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