KR102235022B1 - pile load test method and device using electromagnetic force - Google Patents

Abstract

The present invention relates to a pile loading test method and apparatus using electromagnetic force, and more particularly, to easily and accurately measure the support force of a pile installed on the ground to support the load of structures and facilities using repulsive force generated through electromagnetic force. It relates to a method and apparatus for a pile loading test using an electromagnetic force that can be performed.
In addition, the pile installation step of installing a pile for carrying out the loading test on the ground, the reaction beam installation step of installing a reaction beam that is horizontally spaced apart from the pile, and the mutual repulsive force generated through electromagnetic force between the pile and the reaction beam. Including a loading installation step of installing a loading section consisting of a first loading section and a second loading section, and an electromagnetic force control step of increasing the loading load generated by repulsive force and reaction force between the reaction beam and the pile by adjusting the electromagnetic force of the loading section. Characterized in that.

Description

Pile load test method and device using electromagnetic force}

The present invention relates to a pile loading test method and apparatus using electromagnetic force, and more particularly, to easily and accurately measure the support force of piles installed on the ground to support the load of structures and facilities using repulsive force generated through electromagnetic force. It relates to a method and apparatus for a pile loading test using an electromagnetic force that can be performed.

Various types of pile installation work are being carried out at various construction sites such as apartments, bridges, and buildings, and through field tests, the bearing capacity of the pile is checked and the appropriateness of the design is reviewed.

The method used to determine the pile bearing capacity can be largely divided into a static load test and a dynamic load test.The static load test is a one-way load test in which a compressive load is applied to the pile at the upper end of the pile, and a bidirectional load test in which a load is applied at the bottom of the pile is tested. It can be divided into loading test.

In the case of a one-way static load test, to install a heavy object to generate a fixed load corresponding to the load to be tested, or to perform the test as in Korean Patent No. 10-1495278 "Load Test Equipment and Method for Vertical Extension Remodeling Buildings" After installing a supporting member such as a reaction anchor or a reaction pile to generate a reaction force corresponding to the load, a hydraulic jack must be installed to apply a load, and sufficient space for testing is required. There is a problem in that the hydraulic system for operation is complicated and the installation is cumbersome.

In particular, the larger the required load, the larger the volume occupied by the hydraulic jack and the hydraulic system for the operation of the hydraulic jack, and it is difficult to maintain or increase the hydraulic pressure. There was a problem.

In the bidirectional pile loading test, a hydraulic cell (Osterberg cell) is installed at the bottom of the pile, and the tip bearing capacity of the ground and the main surface friction force of the installed pile are used as necessary reaction force. Unlike the one-way load test, a separate member and reaction force device for load loading. There is a characteristic that there is no restriction on the test space, but there is a difficulty in specially manufacturing the load cell by identifying the capacity and cylinder length of the hydraulic cell before the test.

In addition, the dynamic loading test is to determine the loading capacity and characteristics of the pile based on the equation for the shock wave generated during the pile strike, but requires a high level of equipment and expertise. There was a problem that the test result should be analyzed with sufficient knowledge and experience by applying a load.

Accordingly, there is a need for a technology development for simple installation, easy adjustment of the load applied to the pile, and more easily measuring the displacement of the pile according to the load and time.

Korean Patent Registration No. 10-1495278 "Vertical extension remodeling building loading test equipment and method"

An object of the present invention was conceived to solve the above-described problems, and a pile loading test using electromagnetic force to perform a pile load test more simply and efficiently by simplifying the installed configuration and process compared to the conventional technology It is to provide a method and apparatus.

Another object of the present invention is to provide a method and apparatus for a pile loading test using electromagnetic force to achieve a safe and economical design and construction based on a pile by more accurately measuring the bearing capacity of a pile compared to a conventional method.

In order to achieve the above object, the pile loading test method using electromagnetic force according to the present invention includes a pile installation step of installing a pile for carrying out the loading test on the ground and a reaction beam installation that installs a reaction beam spaced apart from the pile and disposed laterally. The repulsive force between the reaction beam and the pile by adjusting the electromagnetic force of the load and the load installation step of installing a load unit consisting of a first load unit and a second load unit that generates mutual repulsion through electromagnetic force between the step and the pile and the reaction force beam And an electromagnetic force control step of increasing the reload generated by the reaction force.

In addition, a lower pile installation step in which a lower pile for carrying out a loading test is installed in the ground, and a loading section that installs a loading section consisting of a first loading section and a second loading section that generate mutual repulsion through electromagnetic force on the top of the bottom pile are installed. The step and the upper pile installation step of installing the upper pile on the upper part of the loading part and the electromagnetic force control step of increasing the loading load generated by the repulsive force and reaction force between the upper pile and the lower pile by adjusting the electromagnetic force of the loading part. It is characterized.

In addition, a displacement measuring step of measuring the displacement of the pile installed in the ground according to the load generated through the electromagnetic force control step;

It characterized in that it further comprises a bearing force calculation step of calculating the bearing force of the pile based on the load applied through the electromagnetic force control step and the displacement measured through the displacement measuring step.

In addition, the pile loading test apparatus using electromagnetic force according to the present invention includes a pile installed on the ground to perform a loading test, a reaction beam disposed laterally and spaced apart from the pile, and a plurality of reaction force beams for fixing the reaction force beam to the ground. Repulsive force between the reaction force beam and the pile by adjusting the electromagnetic force of the loading section and the loading section consisting of a loading section and a loading section that are arranged between the reaction force anchor and the pile and the reaction beam to generate mutual repulsive force through the electromagnetic force It characterized in that it comprises a control unit for increasing the load load generated by the reaction force.

In addition, a lower pile installed in the ground to conduct a loading test, an upper pile installed spaced apart from the upper pile of the lower pile, and a first loading unit disposed between the lower pile and the upper pile to generate mutual repulsive force through electromagnetic force. And a control unit for increasing a loading load generated by a repulsive force and a reaction force between an upper pile and a lower pile by adjusting an electromagnetic force of the loading portion and the loading portion consisting of the loading portion and the second loading portion.

In addition, it further includes a displacement measuring unit for measuring the displacement of the pile installed in the ground according to the loaded load according to a preset time, and the control unit is based on the load applied through the loading unit and the displacement measured through the displacement measuring unit. It characterized in that it calculates the bearing force of.

As described above, according to the method and apparatus for a pile loading test using electromagnetic force according to the present invention, as the repulsive force generated through the electromagnetic force is used, the configuration compared to the hydraulic system required by conventional technologies such as a hydraulic jack and a hydraulic cell is It is very simple and has an effect that can be carried out efficiently.

In addition, according to the method and apparatus for a pile loading test using electromagnetic force according to the present invention, the displacement is measured by precisely controlling the magnitude of the electromagnetic force through electric control, thereby measuring the holding force of the pile more accurately compared to the conventional method. There is an effect that can promote the safe and economical design and construction of the foundation.

1 is a flow chart showing in order a pile loading test method using an electromagnetic force according to the present invention.
Figure 2 is a flow chart showing another embodiment of the pile loading test method using the electromagnetic force according to the present invention in order.
Figure 3 is a flow chart showing another embodiment of the pile loading test method using the electromagnetic force according to the present invention in sequence.
Figure 4 is a view showing a pile load test apparatus using an electromagnetic force according to the present invention.
5 is a view showing another embodiment of a pile load test apparatus using electromagnetic force according to the present invention.
6 is a view showing another embodiment of a pile load test apparatus using electromagnetic force according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a flow chart sequentially showing a pile loading test method using electromagnetic force according to the present invention, Figure 2 is a flow chart showing another embodiment of the pile loading test method using electromagnetic force according to the present invention in order, Figure 3 Is a flow chart showing another embodiment of a pile load test method using electromagnetic force according to the present invention in order, Figure 4 is a view showing a pile load test apparatus using electromagnetic force according to the present invention, Figure 5 is the present invention Fig. 6 is a view showing another embodiment of a pile load test apparatus using electromagnetic force according to the present invention, and FIG. 6 is a view showing another embodiment of a pile load test apparatus using electromagnetic force according to the present invention.

The method and apparatus for a pile loading test using electromagnetic force according to the present invention relates to a test method and a test apparatus for conducting a pile loading test using repulsive force generated through electromagnetic force. It's a test for a test.

1 is a sequence diagram illustrating a pile loading test method using an electromagnetic force according to the present invention, a pile installation step (S10) of installing a pile on the ground for carrying out a one-way load test, and the pile installation step (S10), which is spaced apart from the pile, and disposed horizontally. The reaction beam installation step (S20) of installing the reaction beam and the loading section installation step (S30) of installing a loading section consisting of a first loading section and a second loading section generating mutual repulsion through electromagnetic force between the pile and the reaction beam. By adjusting the electromagnetic force of the lower, it is configured to include an electromagnetic force control step (S40) of increasing the load generated by the repulsive force and the reaction force between the reaction force beam and the pile.

In addition, the load applied through the displacement measurement step (S50) and the electromagnetic force control step (S40) of measuring the displacement of the pile installed in the ground according to the load generated through the electromagnetic force control step (S40) according to a preset time. It may be configured to further include a bearing force calculation step (S60) of calculating the bearing force of the pile based on the load and the displacement of the pile installed in the ground measured through the displacement measuring step (S50).

At this time, the load-displacement relationship can be detected through the displacement measurement step (S50), and the load-displacement relationship generally indicates a linear relationship when the load is small, and the displacement increases significantly as the pile cannot withstand the applied load. It is also possible to grasp the extreme support capacity through the point of time.

Alternatively, the displacement measurement step (S50) may be configured to measure a distance between the first loading unit and the second loading unit at preset time intervals or to measure the distance between the first loading unit and the second loading unit in real time. .

FIG. 2 is a sequence diagram illustrating another embodiment of a pile loading test method using electromagnetic force according to the present invention, and a first loading portion and a second loading portion generating mutual repulsion through electromagnetic force at the bottom of the pile for carrying out the loading test. The repulsive force and reaction force between the ground floor and the pile by controlling the electromagnetic force of the pile installation step (S30) and the pile installation step (S32) in which the pile is installed in the ground and the pile on which the pile is installed are controlled. It may be configured to include an electromagnetic force control step (S40) to increase the load generated by the load.

In addition, the load applied through the displacement measurement step (S50) and the electromagnetic force control step (S40) of measuring the displacement of the pile installed in the ground according to the load generated through the electromagnetic force control step (S40) according to a preset time. It may be configured to further include a bearing force calculation step (S60) of calculating the bearing force of the pile based on the load and the displacement of the pile installed in the ground measured through the displacement measuring step (S50).

At this time, the load-displacement relationship can be detected through the displacement measurement step (S50), and the load-displacement relationship generally indicates a linear relationship when the load is small, and the displacement increases significantly as the pile cannot withstand the applied load. It is also possible to grasp the extreme support capacity through the point of time.

Alternatively, the displacement measurement step (S50) may be configured to measure a distance between the first loading unit and the second loading unit at preset time intervals or to measure the distance between the first loading unit and the second loading unit in real time. .

3 is a diagram showing another embodiment of a pile loading test method using electromagnetic force according to the present invention in sequence, and a lower pile installation step (S11) and a lower pile of installing a lower pile for conducting a bidirectional load test in the ground. The loading unit installation step (S30) of installing the loading unit consisting of the first loading unit and the second loading unit that generates mutual repulsion through electromagnetic force at the top of the top of the loading section (S30) and the upper pile installation step (S31) of installing the upper pile on the top of the loading section It may be configured to include an electromagnetic force control step (S40) of increasing the load generated by repulsive force and reaction force between the upper pile and the lower pile by adjusting the electromagnetic force of the load and the load.

Alternatively, the lower pile installation step (S11), the lower pile installation step (S30), and the upper pile installation step (S31) are integrated in the form of being inserted into the perforation hole of the ground while the lower pile is installed between the lower pile and the upper pile It may be configured, or each order may be changed.

In addition, the load applied through the displacement measurement step (S50) and the electromagnetic force control step (S40) of measuring the displacement of the pile installed in the ground according to the load generated through the electromagnetic force control step (S40) according to a preset time. It may be configured to further include a bearing force calculation step (S60) of calculating the bearing force of the pile based on the load and the displacement of the pile installed in the ground measured through the displacement measuring step (S50).

At this time, the load-displacement relationship can be detected through the displacement measurement step (S50), and the load-displacement relationship generally indicates a linear relationship when the load is small, and the displacement increases significantly as the pile cannot withstand the applied load. It is also possible to grasp the extreme support capacity through the point of time.

Alternatively, the displacement measurement step (S50) may be configured to measure a distance between the first loading unit and the second loading unit at preset time intervals or to measure the distance between the first loading unit and the second loading unit in real time. .

4 shows a pile loading test apparatus using an electromagnetic force according to the present invention, a pile 1 installed on the ground to perform a one-way loading test and a reaction force disposed at a distance from the pile 1 and disposed laterally A first material that is disposed between a plurality of reaction force anchors (2) for fixing the beam (3) and the reaction force beam (3) to the ground, and between the pile (1) and the reaction force beam (3) to generate mutual repulsive force through electromagnetic force. By adjusting the electromagnetic force of the loading parts 4 and 5 composed of the lower 4 and the second loading part 5 and the loading parts 4 and 5, the repulsive force between the reaction beam 3 and the pile 1 and It is configured to include a control unit 7 for increasing the reloading load generated by the reaction force.

More specifically, a reaction anchor (2) or a reaction force pile is installed around the installed pile (1), and the reaction force anchor (2) or a reaction force pile is connected using a reaction force beam (3). Then, a first loading unit 4 capable of generating an electromagnetic force is installed under the reaction beam 3, and a second loading unit 5 capable of generating an electromagnetic force is installed at the top of the pile 1. .

The first loading part 4 and the second loading part 5 generate electromagnetic force by the power supplied through the control part 7, and at this time, the first loading part 4 and the second loading part 5 The electromagnetic force is generated so that the same poles face each other so that a reaction force is generated between the first loading part 4 and the second loading part 5. The first loading part 4 and the second loading part 5 are pushed to each other by the generated reaction force.

Accordingly, as the first loading part 4 is disposed at the lower end of the reaction beam 3 fixed to the ground by a plurality of reaction force anchors 2, the position is fixed, whereas the first loading part 4 is installed on the upper part of the pile 1 2 The loading part 5 loads the pile 1 downward by reaction force.

In addition, the control unit 7 generates a larger electromagnetic force by increasing the intensity of the current supplied to the first loading unit 4 and the second loading unit 5, and controls the reaction force caused by this to increase further. It is possible to control the size of the reaction force precisely based on the database in which the size of the reaction force for each preset current intensity is stored.

At this time, since the strength of the current has a direct relationship with the magnitude of the reaction force, the magnitude of the reaction force can be known from the strength of the current, and the reaction force acts as a load that pushes the pile 1 downward in the ground.

In addition, near the top of the pile (1), a displacement measuring unit (6) capable of measuring the displacement according to the load applied to the pile (1) is installed to increase the intensity of the current while increasing the strength of the pile (1) and the reaction beam ( 3) It may be configured to measure a change in distance between or a change in distance between the first loading part 4 and the second loading part 5.

Through this, the control unit 7 may calculate a bearing force of the pile 1 by calculating a displacement relationship according to the intensity of the current, or may provide a displacement relationship graph according to the intensity of the current to the operator.

In addition, using a database in which the amount of reaction force for each current intensity is stored, the displacement relationship according to the reaction force (loaded load) is calculated to calculate the bearing force of the pile (1), or the displacement relationship graph according to the reaction force (loaded load) is calculated to the operator. You can also provide.

5 shows another embodiment of a pile loading test apparatus using electromagnetic force according to the present invention, and is disposed at the bottom of the pile 1 and the pile 1 installed in the ground to perform the load test. By adjusting the electromagnetic force of the loading section and the loading section consisting of the first loading section 4 and the second loading section 5 generating mutual repulsive force through, by the repulsive force and reaction force between the ground floor and the pile (1) It may be configured to include a control unit 7 for increasing the generated load load.

At this time, the position is fixed based on the frictional force between the pile 1 and the ground without a separate reaction force beam or a reaction force anchor.

In more detail, the second loading part 5 and the first loading part 4 that can generate electromagnetic force are installed in the bottom (tip) of the perforated hole in the ground, and the pile 11 or the reinforcing bar assembly ( On-site casting pile), or after installing the first loading part 4 and the second loading part 5 at the bottom of the pile 11 or the reinforcing bar assembly (place casting pile), the pile may be installed on the ground.

The first loading part 4 and the second loading part 5 generate electromagnetic force by the power supplied through the control part 7, and at this time, the first loading part 4 and the second loading part 5 The electromagnetic force is generated so that the same poles face each other so that a reaction force is generated between the first loading part 4 and the second loading part 5. The first loading part 4 and the second loading part 5 are pushed to each other by the generated reaction force.

Accordingly, as the first loading part 4 is disposed at the lower end of the pile 11 supported by the frictional force with the ground, the position is fixed, while the second loading part ( 5) loads the bottom (tip) of the hole in the downward direction by reaction force.

That is, since the pile 11 resists the reaction force by the peripheral friction force, a separate reaction force device is not required in this test.

In addition, the control unit 7 generates a larger electromagnetic force by increasing the intensity of the current supplied to the first loading unit 4 and the second loading unit 5, and controls the reaction force caused by this to increase further. It is possible to control the size of the reaction force precisely based on the database in which the size of the reaction force for each preset current intensity is stored.

At this time, since the strength of the current has a direct relationship with the magnitude of the reaction force, the magnitude of the reaction force can be known from the strength of the current, and the reaction force acts as a load that pushes the bottom (tip) of the perforated hole downward.

In addition, the displacement of the second loading section 5 or pile 12 according to the load loading can be measured near the bottom of the second loading section 5 or pile 12 disposed at the bottom (tip) of the perforated hole. A displacement measuring unit 6 may be installed and configured to measure the displacement according to the intensity of the current.

Through this, the control unit 7 may calculate a bearing force of the pile by calculating a displacement relationship according to the intensity of the current, or may provide a displacement relationship graph according to the intensity of the current to the operator.

In addition, by calculating the displacement relationship according to the reaction force (loaded load) using a database in which the reaction force magnitude for each preset current intensity is stored, the bearing force of the pile can be calculated, or a displacement relationship graph according to the reaction force (loaded load) can be provided to the operator. have.

6 shows another embodiment of a pile loading test apparatus using electromagnetic force according to the present invention, and on the upper part of the lower pile 12 and the lower pile 12 installed in the ground to conduct a bidirectional load test The upper pile 11 and the lower pile 12 and the upper pile 11 are spaced apart from each other to generate a mutual repulsive force through the electromagnetic force to the first loading section 4 and the second loading section 5 A control unit for increasing the load load generated by the repulsive force and reaction force between the upper pile 11 and the lower pile 12 by adjusting the electromagnetic force of the configured loading parts 4 and 5 and the loading parts 4 and 5 It is comprised of (7).

When carrying out the bidirectional loading test, the position is fixed based on the frictional force between the upper pile 11 and the ground without a separate reaction beam or reaction force anchor.

More specifically, a second loading unit 5 capable of generating an electromagnetic force is installed on the upper part of the lower pile 12 that is inserted and installed in the ground so as to be located at the bottom (tip) of the perforated hole, and is installed in the perforated hole. A first loading part 4 capable of generating an electromagnetic force is installed at the lower end of the upper pile 11 or the reinforcing bar assembly (cast-in-place pile).

The first loading part 4 and the second loading part 5 generate electromagnetic force by the power supplied through the control part 7, and at this time, the first loading part 4 and the second loading part 5 The electromagnetic force is generated so that the same poles face each other so that a reaction force is generated between the first loading part 4 and the second loading part 5. The first loading part 4 and the second loading part 5 are pushed to each other by the generated reaction force.

Accordingly, as the first loading part 4 is disposed at the lower end of the upper pile 11 supported by the frictional force with the ground, the position is fixed, while the second loading part installed on the lower pile 12 ( 5) loads the lower pile 12 in the downward direction by the reaction force.

That is, since the upper pile 11 resists the reaction force by the peripheral friction force, a separate reaction force device is not required in this test.

In addition, the control unit 7 generates a larger electromagnetic force by increasing the intensity of the current supplied to the first loading unit 4 and the second loading unit 5, and controls the reaction force caused by this to increase further. It is possible to control the size of the reaction force precisely based on the database in which the size of the reaction force for each preset current intensity is stored.

At this time, since the strength of the current has a direct relationship with the magnitude of the reaction force, the magnitude of the reaction force can be known from the strength of the current, and the reaction force acts as a load that pushes the lower pile 12 downward in the ground.

In addition, a displacement measuring unit 6 is installed near the top of the lower pile 12 or near the bottom of the upper pile 11 to measure the displacement according to the load load, and the upper pile installed in the ground while increasing the intensity of the current. (11) Or the displacement of the lower pile 12 or the change in the distance between the bottom (tip) part of the perforated hole and the upper pile 11, or the change in the distance between the lower pile 12 and the upper pile 11, or the first loading part It may be configured to measure the change in distance between (4) and the second loading unit (5).

Through this, the control unit 7 may calculate a bearing force of the pile by calculating a displacement relationship according to the intensity of the current, or may provide a displacement relationship graph according to the intensity of the current to the operator.

In addition, by calculating the displacement relationship according to the reaction force (loaded load) using a database in which the reaction force magnitude for each preset current intensity is stored, the bearing force of the pile can be calculated, or a displacement relationship graph according to the reaction force (loaded load) can be provided to the operator. have.

As described above, the present invention has been described based on a preferred embodiment with reference to the accompanying drawings, but it is apparent to those skilled in the art that many various obvious modifications are possible without departing from the scope of the present invention from this description. Accordingly, the scope of the present invention should be interpreted by the claims set forth to include examples of such many modifications.

1: file
2: reaction anchor
3: reaction beam
4: 1st loading part
5: second loading unit
6: displacement measuring unit
7: control unit
11: upper pile
12: lower file

Claims (8)

A pile installation step of installing a pile for carrying out a loading test on the ground;
A reaction force beam installation step of installing a reaction force beam spaced apart from the pile and disposed laterally;
A loading unit installation step of installing a loading unit consisting of a first loading unit and a second loading unit for generating mutual repulsion through electromagnetic force between the pile and the reaction force beam;
An electromagnetic force control step of increasing the load generated by the repulsive force and the reaction force between the reaction force beam and the pile by adjusting the electromagnetic force of the load unit;
A displacement measuring step of measuring a distance between the first loading part and the second loading part;
It characterized in that it comprises a bearing force calculation step of calculating the bearing force of the pile based on the change in the load applied through the electromagnetic force control step and the distance measured through the displacement measuring step.
Pile loading test method using electromagnetic force.
A loading part installation step of installing a loading part composed of a first loading part and a second loading part for generating mutual repulsion through electromagnetic force at the bottom of the pile for carrying out the loading test;
A file installation step of installing a file in which the lower part is installed in the ground;
An electromagnetic force control step of increasing the loading load generated by repulsive force and reaction force between the ground floor and the pile by adjusting the electromagnetic force of the loading portion;
A displacement measuring step of measuring a distance between the first loading part and the second loading part;
It characterized in that it comprises a bearing force calculation step of calculating the bearing force of the pile based on the load applied through the electromagnetic force control step and the change in the distance measured through the displacement measuring step.
Pile loading test method using electromagnetic force.
A lower pile installation step of installing a lower pile for carrying out a loading test in the ground;
A loading part installation step of installing a loading part composed of a first loading part and a second loading part generating mutual repulsion through electromagnetic force on the upper part of the lower pile;
An upper pile installation step of installing an upper pile on the upper part of the lower part;
An electromagnetic force control step of increasing the load generated by repulsive force and reaction force between the upper pile and the lower pile by adjusting the electromagnetic force of the load part;
A displacement measuring step of measuring a distance between the first loading part and the second loading part;
It characterized in that it comprises a bearing force calculation step of calculating the bearing force of the pile based on the load applied through the electromagnetic force control step and the change in the distance measured through the displacement measuring step.
Pile loading test method using electromagnetic force.
delete A pile installed on the ground to conduct a loading test;
A reaction beam that is disposed to be spaced apart from the pile and disposed laterally;
A plurality of reaction force anchors for fixing the reaction force beam to the ground;
A loading section comprising a first loading section and a second loading section disposed between the pile and the reaction beam to generate mutual repulsion through electromagnetic force;
A control unit for increasing a load load generated by a repulsive force and a reaction force between the reaction force beam and the pile by adjusting the electromagnetic force of the load unit;
And a displacement measuring unit for measuring a distance between the first loading part and the second loading part,
The control unit is characterized in that to calculate the holding force of the pile based on the change in the distance measured through the load and the displacement measuring unit applied through the loading unit.
Pile loading test device using electromagnetic force.
A pile installed in the ground to conduct a loading test;
A loading part disposed at the bottom of the pile and comprising a first loading part and a second loading part generating mutual repulsion through electromagnetic force;
A control unit for increasing a load load generated by a repulsive force and a reaction force between the ground floor and the pile by adjusting the electromagnetic force of the load unit;
And a displacement measuring unit for measuring a distance between the first loading part and the second loading part,
The control unit is characterized in that to calculate the holding force of the pile based on the change in the distance measured through the load and the displacement measuring unit applied through the loading unit.
Pile loading test device using electromagnetic force.
A lower pile installed in the ground to conduct a loading test;
An upper pile spaced apart from and installed above the lower pile;
A loading part comprising a first loading part and a second loading part disposed between the lower pile and the upper pile to generate mutual repulsion through electromagnetic force;
A control unit for increasing the load load generated by repulsive force and reaction force between the upper pile and the lower pile by adjusting the electromagnetic force of the load part;
And a displacement measuring unit for measuring a distance between the first loading part and the second loading part,
The control unit is characterized in that to calculate the holding force of the pile based on the change in the distance measured through the load and the displacement measuring unit applied through the loading unit.
Pile loading test device using electromagnetic force.
delete

Images