KR100668504B1 - Method and apparatus inner screw and hydraulic-cylinder type compaction non-vibration anti-noise for improvement of soft ground - Google Patents

Abstract

A compacting type construction apparatus using an inner screw and a hydraulic cylinder for improving soft ground without vibration and noise and a method thereof are provided to discharge and compact downward a casing by pressing a reinforcing member with an inner screw through rotation of a motor and operation of a hydraulic cylinder, to thereby remove noise and vibration, to prevent building cracks and cattle deaths, to secure fresh dwelling environment, and to reduce the production/maintenance cost by simplifying the structure and removing an additional driving unit like a vibration hammer. A compacting type construction apparatus(100) using an inner screw and a hydraulic cylinder for improving soft ground without vibration and noise comprises a trackless vehicle mounted with a wide track; a leader vertically formed at the front side of the trackless vehicle; a casing(110) moved up and down longitudinally along the leader and formed with a shoe(111) opened/closed on the front side, a screw(112), and a rotary gear(113) at the upper side; an inner screw(120) formed on the inner surface of the front end of the casing to press and discharge a reinforcing member downward according to rotated direction; a motor(130) formed with a motor gear(131) on a rotation shaft to be engaged with the rotary gear to rotate the casing forward or reversely; a hopper(140) formed at the upper side of the casing to supply the reinforcing member into the casing; a frame(150) supporting rotation of the casing to fix the motor and the hopper; and a hydraulic cylinder(160) formed at one side of the frame. The hydraulic cylinder has a compacting rod(161) formed on the rod of the hydraulic cylinder to be elongated to the front end of the casing; and a compacting tool(162) formed on the front end of the compacting rod like a cone tapered upward.

Description

Method and apparatus inner screw and hydraulic-cylinder type compaction non-vibration anti-noise for improvement of soft ground

1-Reference state of use of construction equipment for improving the conventional soft ground.

Figure 2-Cross-sectional view for showing an embodiment of the internal screw and hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention.

3 is a cross-sectional view showing another embodiment of the internal screw and hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention.

Figure 4 is a cross-sectional view showing an embodiment of the internal screw in the internal screw and hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention.

5 is a cross-sectional view showing another embodiment of the internal screw in the internal screw and hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention.

6 is a cross-sectional view showing an embodiment of a compaction rod in the internal screw and hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention.

7 is a cross-sectional view showing another embodiment of the compaction rod in the internal screw and hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention.

8 to 10-reference diagram for showing the reinforcing member drain method applying the internal screw and the hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention by process.

11 to 13-Reference diagram for showing the reinforcement member compact method applied to the internal screw and the hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention for each process.

14-reference state of use of the internal screw and the hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention.

* Explanation of symbols for main parts of the drawings

1: tracked vehicle 2: leader

10: Construction equipment for improving the conventional soft ground

11: shoe 12: casing

13: Hopper

14: Vibration hammer

100: the internal screw and hydraulic cylinder compaction type vibrationless noise-free construction equipment for improving the soft ground of the present invention

110: casing 110a: diameter casing

111: shoe 112: screw

113: rotating gear

120: internal screw

130: motor 131: motor gear

140: hopper 141: on-off valve

142: air supply nozzle

150: frame 151: wire rope

160: hydraulic cylinder 161: compaction rod

161a: pipe 161b: round bar

162: compaction opening 163: damper (Damper)

164: compaction plate

A: reinforcing member

a: Internal screw pitch b: Width of upper part of internal screw

c: lower width of inner screw

The present invention relates to an internal screw and hydraulic cylinder compaction type vibrationless noise-free construction equipment for improving the soft ground and its construction method, and more specifically, to reinforcement member files formed in the ground for the purpose of improving the soft ground with no vibration and no noise. Internal screws and hydraulic cylinder compaction-free vibration-free noise-free construction equipment and its construction method to fundamentally block the causes of environmental problems and to secure a comfortable residential environment in the neighboring area by constructing them. cylinder and inner screw type compaction non-vibration anti-noise (hereinafter referred to as "HIN").

In general, the construction equipment 10 for improving the soft ground includes an endless tracked vehicle 1 equipped with a wide track as shown in FIG. 1, and a leader formed vertically in front of the endless tracked vehicle 1. 2) and a casing 12 having a shoe 11 which is lifted up and down in the longitudinal direction of the leader 2 and which can be opened and closed at a tip thereof, and is formed on the casing 12 to be sand or crushed stone and mixed. Hopper 13 for supplying a reinforcing member such as aggregate into the casing 12 and formed on the hopper 13 to generate a penetration and compaction action into the ground through the vibration of the casing 12. It consists of a vibration hammer 14.

As described above, the construction equipment 10 for improving the soft ground is characterized by the vibration and compaction action generated by activating the vibration hammer 14 to repeatedly insert and pull the casing 12 into the ground to reinforce the member file. The construction is to improve the soft ground, and as a result, the construction quality and the work efficiency of the soft ground is determined according to the capacity and efficiency of the vibration hammer (14).

However, since the vibration hammer 14 uses a strong vibration force, severe vibrations and noises are generated during the construction process, which in turn causes enormous obstacles to economic activities and personal life of neighboring residents, and in severe cases, cracks in buildings. As a result, domestic and domestic animals can be killed, causing many restrictions such as delays in construction due to complaints.

In addition, when compacting a reinforcing member having a constant volume, such as crushed stone and mixed aggregate, by vibrating force of the vibration hammer 14, the ground may be disturbed and dispersed due to severe impact and vibration, and thus, sufficient compacting effect of the reinforcing member may not be obtained. Problems have arisen.

Therefore, recently, as a way to solve the above problems

Ogawa penetrating and rising into the soft ground by the driving of the motor, a casing located inside the OGA and the sand or crushed stone is lowered through the vertical movement and connected to the casing and connected to the sand or crushed stone A hopper provided to the casing, a cylinder device connected to the casing to drive the casing up and down, and a motor for injecting the organo through forward rotation and raising the organo through reverse rotation; Registered as a Korean Patent Registration No. 0380798, "Low Vibration Low Noise Granular Pile Construction Apparatus for Improving Soft Ground", characterized by compacting the lowered sand or crushed stone with at least the load of the casing and the hopper through free fall of the casing. It has been.

However, the conventional "low vibration and low noise granular pile construction device for improving the soft ground" has a structure of compacting sand or crushed stone which is supplied to the inside of the furnace by the load of the casing and the hopper through repeated vertical movement of the cylinder device. In addition, this also has a disadvantage in that noise and vibration are generated due to the impact generated during the lowering operation of the casing and the hopper, such as a vibration hammer.

In particular, the conventional "low vibration and low noise granular pile construction device for improving the soft ground" is a structure in which the casing and the hopper, which is a heavy object, only move up and down by the cylinder device, so that a mechanical bunch of the cylinder device is generated. To provide a cause of durability degradation and failure.

In addition, the conventional "low vibration and low noise granular pile construction device for improving the soft ground" increases the overall volume and load due to the casing, hopper, and cylinder device, and not only decreases the construction efficiency due to the reduced mobility of the equipment. Changes in the center of gravity have frequently resulted in safety accidents in which the machine fell in one direction.

Therefore, the present invention has been made to solve the above conventional problems,

It is an object of the present invention to break away the vibration method of the conventional vibration hammer effectively discharge the reinforcing member in the downward direction through the spiral rotation of the inner screw formed to have a constant pitch on the inner peripheral edge of the casing, as well as the upper portion of the casing By lowering the compaction opening by the operation of the hydraulic cylinder formed in the stiffening member, smooth discharge and compacting of the reinforcing member are possible, so that a separate vibration and impact driving means is not required, so that vibration and noise can be prevented in advance. It is to provide internal screw and hydraulic cylinder compaction type vibration free noiseless construction equipment to improve the soft ground.

Another object of the present invention is the compact structure of the internal screw and hydraulic cylinder to improve the soft ground to simplify the structure and to integrate the overall configuration for the discharge and compaction of the reinforcing member to maximize the efficiency and work efficiency in construction It is to provide a vibration-free noiseless construction equipment.

Still another object of the present invention is to determine the pitch of the inner screw formed inside the casing according to the construction purpose and working environment to efficiently control the discharge speed and compaction range of the reinforcing member construction quality and work efficiency It is to provide internal screw and hydraulic cylinder compaction type vibration free noiseless construction equipment to improve the soft ground to improve the performance.

Another object of the present invention is to increase the compaction efficiency of the reinforcing member by installing a plurality of compaction plates to be spaced at regular intervals in the vertical direction on the outer periphery of the compaction rods formed inside the casing according to the construction purpose and working environment It is to provide internal screw and hydraulic cylinder compaction type vibration free noiseless construction equipment to improve soft ground to maximize quality.

The configuration for achieving the object of the present invention as described above in detail by the accompanying drawings as follows.

Figure 2 is a cross-sectional view showing an embodiment of the internal screw and the hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention,

The internal screw and hydraulic cylinder compaction type vibrationless noise-free construction equipment 100 for improving the soft ground of the present invention is a trackless vehicle (1) equipped with a wide track and a track formed vertically in front of the trackless vehicle (1). A leader 111 and a shoe 111 for lifting and lowering in the longitudinal direction of the leader 2 and opening and closing are provided, and a screw 112 is formed on the outer circumference, but a rotary gear 113 is placed on the upper side. The inner casing 120 and the inner screw 120 for ejecting and compacting the reinforcing member A, which is formed at the inner periphery of the front end of the casing 110 and is supplied to the lower casing, according to the rotational direction. A motor gear 131 meshed with the 113 is formed on the rotating shaft to form the motor 130 for forward or reverse rotation of the casing 110 and the upper portion of the casing 110 to reinforce the member A. Hopper 140 for supplying the inside of the casing 110, And a frame 150 for rotatably supporting the casing 110 and fixing the motor 130 and the hopper 140, and a hydraulic cylinder 160 formed on one side of the frame 150. A compaction rod 161 is formed in the rod of the cylinder 160 so as to extend to the front end of the casing 110, and a compaction hole 162 is formed at the front end of the compaction rod 161 to have a conical shape that becomes wider toward the bottom. )

The tracked vehicle 1 may be moved and rotated according to the intrusion and drawing construction position of the casing 110 and is configured to minimize the ground pressure of the equipment to secure mobility when entering the tracked track in the present invention. The vehicle 1 includes a driver's seat and a power unit that rotate 360 ° around the wide track to control the positions of the leader 2 and the casing 110 according to the change in the construction position of the reinforcing member A pile. In addition, wide tracks can be installed to minimize grounding pressure to ensure stability when entering equipment.

In this case, the wide track is preferably a wetland shoe plate having a triangular cross section to improve traction when considering the characteristics of the soft ground and the working environment.

On the other hand, the casing 110 is a screw 112 is formed on the outer circumference and the forward and reverse rotation in accordance with the rotation direction of the motor 130 while the spiral and rotation through the spiral can be inserted into the ground and drawing out the noise and Vibration does not occur.

At this time, the inside of the casing 110 to form an inclined weight (not shown) in order to measure the input amount of the reinforcing member (A) so that the operator can check or output this can adjust the input amount of the reinforcing member (A). However, since the structure (drawing) and the operation principle of measuring the input amount of the reinforcing member (A) is a well-known technique that is commonly used in the art, detailed description thereof will be omitted.

In addition, at the distal end of the casing 110, as shown in FIG. 3, a larger diameter casing 110a is formed than the diameter of the casing 110, which is a work efficiency and reinforcement of the casing 110 penetrating into the ground. It is a structure for improving the discharge efficiency of the member A.

To this end, in the present invention, the diameter of the casing 110 is formed to about 500 mm and the diameter of the enlarged casing 110a is about 600 mm and the length is 1 to 2 m.

At this time, the diameter and length of the casing 110 and the diameter expansion casing (110a) will be obvious that it can be produced in various changes depending on the construction range and design specifications.

On the other hand, the shoe 111 has a structure that is opened and closed in the left and right direction when the discharge and compaction action of the reinforcing member (A), wherein the method for opening and closing the shoe 111 is a variety of known opening and closing such as wire rope and cylinder The method can be adapted and applied.

In addition, a plurality of air supply pipes may be formed inside the casing 110 to supply compressed air, which prevents the problem of inflow of soil into the casing 110 due to earth pressure in the ground and at the same time. (110) When the reinforcing member (A) inside it is not discharged in the downward direction is configured to efficiently discharge it.

The inner screw 120 is a very important configuration in the present invention, for discharging the reinforcing member A introduced into the casing 110 in a downward direction or to perform a compaction action, that is, the casing ( The reinforcing member A, which is introduced into the interior of the container 110, is forced and discharged downward through the spiral rotation.

As such, the inner screw 120 rotates simultaneously with the rotation of the casing 110 without the need for a separate driving means, while efficiently discharging and compacting the reinforcing member A supplied to the inside of the casing 110 without vibration. It becomes possible.

In particular, the inner screw 120 is preferably formed so as to be wound in a direction opposite to the screw 112, which causes the inner screw 120 to rotate forward when the screw 112 reverses for drawing. Therefore, the reinforcing member (A) supplied to the inside of the casing 110 can be forcibly discharged downward.

At this time, the inner screw 120 may be manufactured by adjusting the inner screw pitch (a), as shown in Figure 4, which is reinforcement by rotating the inner screw 120 more quickly than the rotation of the screw 112 This is to increase the discharge and compaction action of the member (A).

For example, if the inner screw 120 makes two revolutions while the screw 112 makes one rotation, the speed of discharging the reinforcing member A in the downward direction is relatively increased. This is to improve the discharge efficiency and compaction action of the reinforcing member (A).

On the other hand, the inner screw 120 may be formed such that the width gradually increases from the top to the bottom in the cross-section as shown in Figure 5, which is the close area of the reinforcing member (A) and the inner screw 120 By increasing the pressure in the downward direction and at the same time to increase the compacting action of the reinforcing member (A).

As such, the inner screw 120 can be applied to the drain method by efficiently discharging the reinforcing member (A) in the downward direction at the same time as the rotation, and also applying the reinforcing member (A) to the compaction method through the discharge and compaction action You can do it.

On the other hand, the motor 130 is a configuration for generating a driving force to enable the injecting and drawing out of the vibration-free noise by rotating the casing 110 forward and reverse, wherein the motor 130 is both sides of the casing 110 The rotary gear 113 is formed to be engaged with each other in the direction to ensure smooth rotation of the casing 110, as well as the load is transmitted in one direction during the rotation process, so that the rotary gear 113 and the motor gear 131. This is to prevent the problem of being damaged in advance.

One side of the hopper 140 is provided with an on-off valve 141 and an air supply nozzle 142, which supplies or blocks compressed air to the inside of the hopper 140 to mediate the on-off valve 141 by the hinge shaft By operating the reinforcing member (A) to control the input amount.

In addition, a wire rope 151 is formed on an upper portion of the frame 150 and connected to the crawler vehicle 1 to move up and down along the leader 2.

The hydraulic cylinder 160 is to increase the compaction efficiency of the reinforcing member (A) while moving the compaction rod 161 and the compaction opening 162 in the downward direction, wherein the compaction rod 161 and the compaction opening ( 162 is a configuration for discharging the reinforcing member (A) introduced into the casing 110 in the downward direction or to perform a compaction action, that is, the reinforcing member (A) introduced into the casing (110) Since the hydraulic cylinder 160 is pressed from the upper to the lower direction by the operation of the hydraulic cylinder 160 is forced and discharged in the lower direction.

Therefore, the compaction rod 161 and the compaction opening 162 exclude the structure of the vibration method and the striking method, and reinforcement members are supplied to the inside of the casing 110 according to the hydraulic force according to the forward and backward of the hydraulic cylinder 160. (A) is vibration-free and noiseless, enabling efficient discharge and compaction.

In this case, a damper 163 may be formed at the connection portion between the compaction rod 161 and the compaction opening 162 to prevent damage and damage due to a collision in advance, as shown in FIG. 6. have.

In addition, as shown in Figure 7 to improve the durability of the compaction rods 161, the compaction rods 161, the upper portion forms a pipe 161b having a hollow hollow tube shape inside and the lower portion inside By connecting the full bar (161a) is full, by distributing the physical load by the discharge and compacting action of the reinforcing member (A) to prevent damage and damage in advance as well as to minimize the weight to improve the operating efficiency do.

In addition, a plurality of compaction plates 164 are formed on the outer circumference of the compaction rod 161 so as to be spaced apart at regular intervals in the vertical direction, wherein the compaction plate 164 is formed to be inclined in the upper direction from the top to the reinforcing member A. Efficiently discharging in the downward direction and increasing compaction at the same time.

On the other hand, the compaction opening 162 is in contact with the reinforcing member (A) to press the downward direction to generate an efficient discharge and compaction action, wherein the shape of the compaction opening 162 is from the top to the bottom direction It is preferable to form a conical shape that gradually increases in width down, which minimizes the occurrence of interference and collision so that the reinforcing member (A) supplied from the hopper 140 can be easily supplied in the downward direction To improve construction efficiency.

As such, the compaction rod 161 and the compaction opening 162 may construct the reinforced reinforcement member (A) file through the discharge and compaction of the reinforcement member (A) efficiently in the downward direction by the operation of the hydraulic cylinder (160). It becomes possible.

Looking at the drain method applying the internal screw and the hydraulic cylinder compaction-free vibration-free construction equipment 100 for improving the soft ground of the present invention having the configuration as described above are as follows.

8 to 10 is a reference diagram for showing the reinforcing member drain method applied to the internal screw and the hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention by process,

A step of operating the hydraulic cylinder 160 to raise the compaction rod 161 and the compaction opening 162 and then forward the casing 110 into the ground by forward rotation by driving the motor 130 (a). )and,

(B) injecting the reinforcing member A into the casing 110 through the hopper 140;

Reverse rotation by the drive of the motor 130 to draw the casing 110 and at the same time discharge the reinforcing member (A) in the downward direction by the spiral rotation of the inner screw 120 as well as the hydraulic cylinder 160 The compaction opening 152 is lowered by the operation of) and discharged to the ground while pressing the reinforcing member (A) to form a reinforcing member (A) pile.

Looking at the compact method applying the internal screw and the hydraulic cylinder compaction-free vibration-free construction equipment 100 for improving the soft ground of the present invention having the configuration as described above are as follows.

11 to 13 is a reference diagram for showing the reinforcing member compact method applying the internal screw and the hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground of the present invention by process,

Operating the hydraulic cylinder 160 to raise the compaction rod 161 and the compaction opening 162, and then forward the casing 110 into the ground by forward rotation by driving the motor 130 ( a) and,

(B) injecting the reinforcing member A into the casing 110 through the hopper 140;

Reverse rotation by the drive of the motor 130 to draw the casing 110 and at the same time discharge the reinforcing member (A) in the downward direction by the spiral rotation of the inner screw 120 as well as the hydraulic cylinder 160 Step (c) by simultaneously lowering the compaction opening 152 to pressurize the reinforcing member A to be discharged into the ground;

The process (d) of forming the reinforcing member (A) pile through the discharge and compaction action by repeating the above steps b ~ c process.

In the present invention, the reinforcing member refers to sand, mixed aggregate, crushed stone, concrete crushed stone, recycled aggregate, oyster shell, blast furnace slag, or a mixture thereof for improving soft ground.

Therefore, the present invention enables efficient penetration and drawing in a state where noise and vibration do not occur due to the spiral rotation due to the forward and reverse rotation of the casing 110, and the spiral rotation of the inner screw 120 again. Since the compaction rod 161 and the compaction opening 162 are discharged and compacted in the downward direction by the operation of the hydraulic cylinder 160, the reinforcement member A file can be constructed, and thus, the conventional vibration method. Vibration-free and noise-free construction without the need for a vibratory hammer and impact drive is possible.

As described above, the embodiment of the present invention has been described in detail, but the scope of the present invention is not limited thereto, and it is natural that the present invention is included in the scope of the present invention to a configuration that is substantially equivalent to the embodiment of the present invention. something to do.

The present invention is to escape the vibration method of the vibration hammer to generate vibration and noise to press the reinforcement member while the inner screw is lowered by the operation of the hydraulic cylinder at the same time as the rotation by the motor to discharge and compaction in the downward direction of the casing. Therefore, it has the advantage of realizing noiseless vibration-free construction.

In addition, the present invention has the advantage that it is possible to fundamentally block the cause of the cracks of buildings and livestock due to the vibration and noise of the building because of the vibration-free noise-free construction, as well as to ensure a comfortable living environment of nearby residents. .

In particular, the present invention is simple in structure, light in weight, and does not require a driving device, such as a vibration hammer, the need to create an economic benefit by reducing the manufacturing cost and the consumption cost of maintenance, etc. Has

In addition, the present invention is a very useful invention that can maximize the scope of work and utilization because it is possible to construct a vibration-free noise-free, so that efficient construction can be performed even in large cities and public places that have been limited by construction.

Claims (9)

In the construction equipment for improving the known soft ground, An endless tracked vehicle equipped with a wide track, a leader formed in a vertical direction in front of the endless tracked vehicle, and a shoe that can be opened and closed in the longitudinal direction of the leader and can be opened and closed at the end thereof, and a screw is formed on the outer circumference thereof. The rotating shaft includes a casing in which a rotary gear is installed, an inner screw for pressing and discharging the reinforcing member formed on the inner circumference of the front end of the casing in a downward direction according to the rotation direction, and a motor gear engaged with the rotary gear. A motor configured to rotate the casing forward or reverse, a hopper formed at an upper portion of the casing to supply a reinforcing member to the inside of the casing, and rotatably supporting the casing to support the motor and the hopper. A frame for fixing and a hydraulic cylinder on one side of the frame and the rod of the hydraulic cylinder There is formed a compaction rod to extend to the front end of the casing and the inner screw and hydraulic cylinder compacting to improve the soft ground, characterized in that the front end of the compaction rod is formed of a compaction hole formed to have a conical shape that becomes wider downward No vibration and noiseless construction equipment. According to claim 1, The inner screw and hydraulic cylinder compaction-free vibration-free noise-free construction equipment for improving the soft ground, characterized in that the diameter of the casing is formed at the tip of the casing larger than the diameter of the casing. The method of claim 1, wherein the inner screw is formed to be wound in the opposite direction to the screw, the internal screw and hydraulic cylinder compaction-free vibration-free construction equipment for improving the soft ground. The method of claim 1 or 2, wherein the inner screw is formed in such a way that the width gradually increases from the top to the lower direction in the cross-section of the internal screw and hydraulic cylinder compaction-free vibration-free noise-free construction equipment. The inner screw for improving the soft ground according to claim 1, wherein a damper is further formed at the connection portion between the compaction rod and the compaction hole to prevent damage and damage caused by impact in advance, thereby improving durability of the facility. Hydraulic cylinder compaction type vibration free noiseless construction equipment. The method of claim 1, wherein the compaction rod is formed in the upper hollow pipe form of the inside and the lower portion of the inner screw and the hydraulic cylinder compacting to improve the soft ground, characterized in that it is configured to be connected to the full round bar. No vibration and noiseless construction equipment. (A) injecting a casing with a hopper on the ground by operating the hydraulic cylinder to raise the compaction rod and the compaction hole, and then rotating forward by driving the motor; (B) injecting a reinforcing member into the casing through the hopper; The motor rotates in reverse direction to draw the casing and at the same time discharges the reinforcing member downward by the helical rotation of the inner screw formed on the inner diameter of the tip of the casing, as well as the compaction hole is lowered by the operation of the hydraulic cylinder. The internal screw and hydraulic cylinder compaction-free vibration-free construction method for improving the soft ground, characterized in that the step of forming a reinforcement member pile by pressing the reinforcement member to discharge to the ground. (A) injecting a casing with a hopper on the ground by operating the hydraulic cylinder to raise the compaction rod and the compaction hole, and then rotating forward by driving the motor; (B) injecting a reinforcing member into the casing through the hopper; The motor rotates in reverse direction to draw the casing and at the same time discharges the reinforcing member downward by the helical rotation of the inner screw formed on the inner diameter of the tip of the casing, as well as the compaction hole is lowered by the operation of the hydraulic cylinder. (C) and simultaneously compacting and discharging to the ground while pressing the reinforcing member, The internal screw and hydraulic cylinder compaction-free vibration-free construction method for improving the soft ground, characterized in that the step (d) of repeating the above steps b ~ c to form a reinforcing member pile through discharge and compacting action. . The method of claim 7 or 8, wherein the reinforcing member is sand, mixed aggregate, crushed stone, concrete crushed stone, recycled aggregate, oyster shell, blast furnace slag or for improving the soft ground, characterized in that any one or more thereof. Internal screw and hydraulic cylinder compaction vibration free noiseless construction method.

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