KR101358622B1 - Apparatus for constructing stone column by adding vertical impact with a cycle and method for constructing stone column by the apparatus - Google Patents

Abstract

The present invention is intended to further increase the shear strength of the crushed stone piles by directly transferring the vertical impact of the road rammer applied in the vertical direction to the load rammers, and by applying a vertical impact of the road rammers at a constant cycle. The crushed pile and surrounding ground are further sealed by increasing the amplitude of the crushed stone pile, and the crushed stone pile is formed by having a leader, earth auger, casing auger, crusher inserter and road rammer in a single body having a moving part and a turning part. By making a series of work process by one equipment, the work process is continuously and automatically done without interruption, so that the work is efficient and construction is economical while reducing the air. In addition, by reinforcing the tip of the crushed stone pile with high-strength geogrid, it is intended to prevent the expansion failure caused by the upper load and to maximize the support strength of the crushed stone pile and minimize the settlement.

Earth Auger, Casing Auger, Road Rammer, Crushed Pile, Vertical Impact, High Strength Geogrid

Description

Apparatus for constructing stone column by adding vertical impact with a cycle and method for constructing stone column by the apparatus}

The present invention relates to a vertical impact compacted crushed stone pile construction equipment and a crushed stone pile construction method using the same.

 Recently, domestic construction projects have been gradually increasing the demand for land with good ground conditions along with the acceleration of industrialization and economic growth.However, due to the limited land, it is difficult to secure land with good ground conditions. Construction work is underway to the soft ground distribution area. In this case, soft ground improvement is inevitable, and soft ground improvement methods such as a stone column method are applied. In the case of applying ground improvement methods such as crushed stone pile method, two important basic engineering problems such as bearing capacity and settlement have to be satisfied. Recently, many studies have been conducted to reduce settlement. The crushed pile method is a method to improve the soft ground by forming compaction piles using relatively stiff and large compressible crushed stone, and the utilization frequency is increasing, but it is expanded in the ground where lateral restraint pressure is not sufficiently exerted. There is no resistance to bulging failure and shear failure, making the application impossible. The crushed stone pile is simply formed by crushing the crushed stone because there is no adhesion between the crushed stone and the crushed stone.

 The present inventors have already developed a high strength geogrid reinforced crushed stone pile that can control the bearing capacity and settlement amount, etc. in Korea Patent No. 10-0603140. High-strength geogrid reinforcement crushed pile is to reinforce the upper part of the crushed stone pile with insufficient lateral restraint pressure with high-strength geogrid to prevent bulging failure and shear failure.

The basic principle of geogrid reinforced crushed stone pile is as follows.

The schematic diagram of the upper load acting on the normal crushed stone pile and geogrid reinforced crushed stone pile is shown in Fig. 1a and Fig. 1b. As shown, if the same ground conditions and the same top load (qu) acts on the crushed stone piles, in case of the normal crushed stone piles, since the expansion failure occurs at the upper limit of the restraint stress, the excessive settling amount (S1) occurs. On the other hand, in the case of high-strength geogrid-reinforced crushed stone piles, the expansion of the crushed stone piles with geogrids can be suppressed to a large extent in the expansion fractures occurring at the upper side of crushed stone piles. Due to this effect, the geogrid reinforcement crushed piles have a decrease in settlement (S2) compared to the normal crushed stone piles.

In order to evaluate the applicability of high strength geogrid reinforced crushed stone piles, the inventors performed three-dimensional numerical analysis using the PEN-TAGON 3D program, which is a finite element analysis program. Numerical analyzes were performed for the application of general crushed stone piles and for the application of geogrid reinforced crushed stone piles for the purpose of mutual comparison. In addition, to verify the effective reinforcement depth of the geogrid and the settlement subsidence effect by reinforcement depth, numerical analysis was performed by changing the reinforcement depth to 2, 4 and 8 times the pile diameter (D).

 In the three-dimensional numerical analysis, the ground element used the Modified Cam-Clay Model, which is generally known to reasonably simulate the behavior of the soft ground. For the numerical analysis, 8-node solid elements were used for the ground and piles, and the rigid loading was modeled and the analysis was performed by applying the step load over the loading. The pile applied for the numerical analysis was assumed to be 1.0m in diameter and 8.0m in length, and the loading board was assumed to be 2.2m in size and applied as a shell element. In addition, geogrid reinforcement to crushed pile was applied as plate element, and modeled by restraining rotational displacement during analysis. The thickness of the soft layer is 8.0m, it is assumed that the weathered rock layer is present under the soft layer.

Three-dimensional numerical results were performed to verify the lateral strain suppression and settlement reduction effects of geogrid reinforced crushed stone piles.

⒜ As geogrid reinforcement deepens, the total settlement of crushed piles is found to decrease.

수평 As a result of examining the horizontal displacement pattern of the crushed stone pile according to the load, it was confirmed that the main deformation behavior of the crushed stone pile was the form of expansion.

 In the case of non-reinforced general crushed stone piles, the horizontal deformation occurs relatively large in the upper part of the pile, and the horizontal deformation gradually decreases as the geogrid reinforcement depth increases.

수평 In the case of reinforcement with geogrids up to 2D of piles, the horizontal deformation is relatively large in lower crushed piles not reinforced with geogrids.However, in case of reinforcement with geogrids up to 4D of piles, the horizontal deformation of upper part of crushed piles is greatly suppressed. It was found that the deformation of the flat window of the pile also occurred in the lower crushed stone piles not reinforced with geogrids.

⒟ In addition, when the entire crushed pile is reinforced with geogrids, the settlement reduction effect is relatively clear, and the horizontal deformation of the pile is not the expansion type but the overall deformation.

침 As the stiffness of geogrid increased to 4T, 7T and 10T, it was found that the settlement of crushed stone piles decreased, but the settlement of crushed stone piles did not decrease significantly as the stiffness of geogrid increased. The most influential factor is geogrid reinforcement depth.

⒡ Overall, the depth of reinforcement of geogrids was deepened, so the settlement ratio decreased and the settlement reduction effect was excellent. At the same reinforcement depth, the stiffness of geogrids was evaluated to reduce the settlement of crushed piles.

As a result of comprehensive analysis of these numerical results, the geogrid reinforcement of the upper litter piles with relatively less restraining stress can suppress much of the expansion fracture of the litter piles, and the settlement can be greatly reduced. I think there will be.

Next, the construction equipment of the crushed stone pile will be described.

First, the vibration type will be described.

Vibration type is a way that the vibrator head rotates and vibrates up, down, left and right to form a pile body and is used for general stone column construction. The vibrator, which is the basic equipment in the vibration replacement process to form the crushed pile body, is basically composed of steel tubes attached to an eccentric (Excentric Weight) and electric (hydraulic) motor.

Figure 1.Schematic Diagram of Vibrator Type

Second, the input method of the crushed stone is explained.

As shown in Figure 2, the vibrator type is generally divided into a wet top feed and a dry bottom feed type. In general, both types are applied in actual crushed stone pile construction. The vibrator penetrates through the entire depth of improvement to form a hole, and immediately introduces about 1 m of substitute material through the vibrator tip and draws the vibrator. Simultaneously withdraw, reintroduce with 50 ~ 70㎝ vibration to form crushed stone pile of 50 ~ 30㎝ length.

(a) Top feed method (a) Bottom feed method

Figure 2. Classification according to crushed stone input method

(1) Wet Top feed method (Vibrator Type)

The crushed stone pile method is a method originated from the vibratory stone compaction pile method. In general, the depth vibrator is equipped with water jet equipment at the vibrator tip, and the wet top feed method is applied to the crane. Vibration replacement method, which is excellent in applicability, economical and easy to install, is widely used all over the world.

 The vibrator penetrates into the ground by the waterjet method, and accordingly, the drilling hole is formed 1 to 3 times larger depending on the ground conditions. While continuously supplying water to the vibrator tip infiltrating the drill hole, the drill hole is maintained, and the substitutes are introduced from the ground to form the crushed stone pile by the vibration compaction method (Figure 3).

Figure 3. Schematic diagram of a wet top feed method

(2) Dry Top feed method (Vibrator Type)

This method differs from the wet method using water jet in that high pressure and air pressure are used instead of water jet. The dry top feed method is not a commonly used method and is applicable when the groundwater level is below the improved depth. It is not applicable to maritime renovation work.

(3) Dry Top feed method (Rammer Type)

During the construction of the crushed stone pile by the dry top feed method, the direct compaction method (Rammer Type) fills the crushed stone with a certain height in the perforated hole by the top soil method, and forms the pile body by the compaction by high compaction energy. Since high striking energy is directly applied to the substitution material, it is possible to form piles with higher rigidity than vibrator type piles. In the dry top feed method by the high rigidity direct compaction method, a dedicated equipment (compacter) as shown in Fig. 4 is generally used, and a dedicated skid loader is used for the replacement of the substitute material. In Vibrator Type, Vibrator is mounted on a crane or leader, but Rammer Type is equipped with a dedicated rammer instead of hydraulic breaker chisel on the back-hoe, which is advantageous in terms of maneuverability in construction.

(a) Back-hoe view with Rammer

Figure 4. Dry Top Feed Method (Rammer Type) Equipment

Third, the reader mounting or crane method will be described.

Depending on the site conditions, it may be possible to decide how to mount the reader or attach the crane. In general, the bottom feed method is used for hanging cranes with a vibrator equipped with a jetting system (Figure 5). Pipes or hoppers may be used to supply substitutes to the vibrator tip. Crane mounting is typically used for deep depths of up to 16 m or for offshore operations using barges.

Figure 5. Bottom feed method attached to the crane

The dry bottom feed method is mounted on the reader as shown in Figure 6. These equipment assemble and mount the vibrator with the modified pile equipment. Meanwhile, considering the light weight and efficiency of the equipment, the depth of improvement was limited to about 20 m.

Figure 6. Bottom feed method mounted on the reader

The formation of the crushed stone pile according to the conventional method is a problem that is not made by a single equipment.

Since the hopper is used to inject the crushed stone into the perforated hole, the separate equipment must support the hopper or the vibrator must be supported by the separate equipment for the compaction. There is a problem that the excessive commitment is not made continuously because the operation is disconnected.

The formation of crushed stone piles is not a method in which a crushed stone is put into a hole at a time, but a crushed stone pile is formed step by step by adding a predetermined amount of crushed stone to a crushed stone hopper and a crushed stone crushing process. In other words, a hopper must be installed for crushing stones, and the hopper is removed to crush the crushed stone again, and a vibrator is installed instead of the hopper to crush the crushed stone, and then again to remove the vibrator and to install the hopper instead of the vibrator. do. Based on the location where the crushed stone pile is formed, the hopper and the vibrator are installed and removed at each stage, as well as the installation and removal by different equipment, resulting in disconnection of work, resulting in long air and consistent construction. There is a problem that is not made.

In particular, whether the compaction of the crushed stone pile is by vibrator or by the rammer by the backhoe equipment, the compaction of the crushed stone pile is not made securely, and thus the shear strength of the crushed stone pile becomes weak. This is a cause of weakening the support strength of the crushed stone pile as well as the settlement, which is a problem to be solved by the conventional crushed stone pile.

If the compaction of the crushed stone pile depends on the horizontal vibration caused by the left and right vibration, it is pointed out that this phenomenon is large and the shear strength of the crushed stone pile is not so large.

This problem is pointed out in the case of the conventional method in which the compaction of the crushed stone piles depends on the horizontal vibration caused by the left and right vibrations. Since the shear strength is not large, the diameter of the crushed stone pile is not uniform, and the thickness is not thin or closed. Because of this, the crushed stone pile is not formed vertically but may be formed in an S shape. This problem is also a limitation of horizontal vibration compaction. Given sufficient shear strength to the crushed stone piles, it is possible to form vertically uniform crushed stone piles. The weakness of horizontal vibration compaction is that of shear strength.

If the shear strength is vulnerable, there is a problem that the support strength of the crushed stone pile is vulnerable as well as the settlement is increased.

In addition, in the case of forming a crushed stone pile according to the conventional method, an earth auger is inserted to form a drilled hole in the ground, a hopper is installed to inject a 1-stage crushed stone into the drilled hole, and To remove the hopper and to install the vibrator, instead of the two-stage crushed stone, to remove the hopper and to remove the hopper, to install the two-stage crushed stone, to install the vibrator and to install the three-stage crushed stone instead. Remove the vibrator and repeat the process of installing the hopper to form the crushed stone pile. However, the earth augers, hoppers, vibrators, etc. used for the formation of the crushed stone piles are not a single device but are composed of separate small devices.

As such, a series of processes for the formation of crushed stone piles are performed by separate devices, and therefore, disconnection of work due to installation and removal is inevitable for each process, and thus, a series of work processes for forming crushed stone piles is continuously performed. There is a problem that the air is not made long and construction is uneconomical.

The present invention solves the problems of the conventional method.

The purpose of the present invention is to deliver a vertical impact of the load rammer applied in the vertical direction to the load rammer by directly compacting the crushed stone pile vertical impact compacting crushed stone pile construction equipment to increase the shear strength of the crushed stone pile further And to provide a method of constructing crushed stone piles using the same.

Another object of the present invention is to increase the amplitude of the vibration by applying a vertical impact of the road rammer at a certain period to vertically compacted crushed stone pile construction equipment and a crushed stone with a constant period to make the crushed stone pile and the surrounding ground more tight It is to provide a pile construction method.

Another object of the present invention is to perform a series of working processes to form a crushed stone pile by a single equipment so that a series of working processes are continuously and automatically performed without being interrupted, thereby reducing the air and efficient construction work The purpose of the present invention is to provide a vertical impact compacting crushed pile construction equipment and a crushed pile construction method using the same.

Another object of the present invention is to reinforce the tip of the crushed stone pile with high strength geogrid to prevent expansion destruction due to the upper load while maximizing the supporting strength of the crushed stone pile and minimizing settlement. It is to provide a pile construction equipment and crushed stone construction method using the same.

In order to achieve the above object, the present invention provides an apparatus comprising: a main body having a traveling part and a pivoting part which is horizontally installed on the traveling part;

A leader installed at the front of the pivot;

An earth auger driver installed on the front of the leader to be liftable, an upper end thereof is coupled to a lower end of the earth auger driver, and a lower end thereof is a screw rotatably supported by the screw support unit, and a bead coupled to a lower end of the screw. And an earth auger driving means for elevating and driving the earth auger driver;

A casing auger driver rotatably installed on the front of the leader, a casing auger holder rotatably coupled to a lower end of the casing auger driver, and detachably coupled to a lower end of the casing auger holder and coaxially screwing the screw. A casing auger including a casing surrounding the casing and a casing auger driving means for moving up and down the casing auger driver;

The crusher crusher crusher crusher including a crushed hopper bracket coupled to the right side of the leader, and a crushed stone hopper fixed near the bottom of the crushed hopper bracket;

On the lower side of the rammer rod and the rod rammer driver coupled to the load rammer lifting frame is installed on the left side of the leader and the rod rammer driver and the rod rammer driver fixed to the rod rammer lifting frame and has a hitting portion at the bottom thereof. It provides a vertical impact compacted stone pile construction equipment of a constant cycle consisting of a load rammer including a casing holder coupled and a load rammer lifting driving means for lifting and driving the load rammer driver.

The earth auger, the casing auger, the crusher feeder and the rod rammer are located at the same radius around the turning center of the screw, the casing, the crusher hopper and the rammer rod within the same radius and at an angular interval not to interfere with each other. Is placed.

In addition, the present invention to achieve the above object,

Move the above equipment to the construction location

(a) drilling and casing insertion preparation step for moving the equipment main body to the position to be constructed so that the screw of the leader and earth auger and the casing of the casing auger are perpendicular to the working position;

(b) The screw and bead rotate and descend by the earth auger driver and the earth auger driving means of the earth auger, and the casing auger holder and the casing are rotated by the casing auger driver and the casing auger driving means of the casing auger. Drilling and casing insertion step of lowering the pile hole in the ground and inserting the casing into the pile hole;

(c) With the casing separated from the casing auger holder, the earth auger driver, earth auger screw, bead, casing auger driver, and casing holder are raised by the earth auger lift drive means and the casing auger lift drive means. Drilling and casing insertion completion step to maintain the inserted state;

(d) a crushed stone loading and compaction preparation step of turning the slewing portion clockwise to position the crushed stone hopper of the crushed stone hopper on the pile hole;

(e) a primary crushed stone input step of inputting the crushed stone supplied to the crushed stone hopper using an excavator into a casing inserted into the pile hole;

(f) While turning the turning part counterclockwise, the rammer rod of the rod rammer is kept vertical so that the rammer rod, rammer rod and casing holder are lowered by the rod rammer elevating driving means so that the rammer rod is inserted into the casing. In addition, the upper end of the casing is coupled to the casing holder, and then the rod rammer driving mechanism and the casing holder are raised by the rod rammer elevating driving means to slowly pull out the casing and operate the rod rammer actuator to crush the impact part of the rammer rod to crush the stone. Casing withdrawal and crushed stone compacting step to form a crushed stone pile;

(g) providing a method of constructing a vertical impact compacted stone pile pile of a certain period comprising a step of forming the final crushed stone pile by repeating the steps 2 to 6.

In addition, performing steps (a) to (f), and repeating steps (b) to (f), leaving an empty pile ball between the top of the final crushed stone pile and the ground, and inserting a high strength geogrid into the empty pile ball. It may further comprise a step.

The effects of the vertical impact compacting crushed stone construction equipment and the crushed stone pile construction method using the same according to the present invention are as follows.

The present invention installs a ground auger, a casing auger, a crusher feeder and a road rammer on a leader of a single device consisting of a running part and a turning part, so that the crushed stone piles such as perforation, casing insertion, crushing crushing, crushed stone and geogrid insertion as one device. Since a series of work processes to be formed are performed by a single equipment, a series of work processes are continuously and automatically performed without being interrupted, thereby shortening the air, and efficiently working and constructing economically.

According to the present invention, since the vertical impact of the load rammer applied in the vertical direction is directly fixed to the crushed stone piles, the shear strength of the crushed stone piles is further increased, and the vertical impact of the load rammer is applied at regular intervals. By increasing the amplitude, there is an effect to further close the crushed stone pile and the surrounding ground.

In addition, since the front end of the crushed stone pile is reinforced with a high strength geogrid, it is a useful invention that prevents tip rupture destruction due to the upper load and maximizes the support strength of the crushed stone pile and minimizes settlement.

The vertical impact applied at regular intervals causes vibration and at the same time increases the amplitude of the crushed stone piles and surrounding ground. The crust of the crushed stone pile and the surrounding ground increases the shear strength, which increases the support strength of the crushed stone pile and prevents settlement at the same time.

Hereinafter, the vertical impact compacting crushed stone pile construction equipment and the crushed stone pile construction method using the same according to the present invention will be described in detail according to the embodiment shown in the accompanying drawings.

1 to 3 shows the vertical impact compacted stone pile automation construction equipment according to the present invention,

1 is a side view and a plan view showing a state that the earth auger is adjusted to the working position, Figure 2 is a side view and a plan view showing a state where the crushed stone hopper is adjusted to the working position, Figure 3 is a state in which the road rammer is adjusted to the working position Is a side view and a plan view.

In the drawing, reference numeral 100 denotes an equipment body having a driving unit 110 capable of traveling on the ground and a turning unit 120 installed to be horizontally rotatable on the upper portion of the driving unit 110.

The equipment main body 100 is similar to a conventional traveling crane, the driving unit 110 is configured in a caterpillar type, the turning unit 120 is provided with a cab 121.

A leader coupling part 130 is provided at the tip end of the turning part 120, and a lower end of the leader 200 is coupled to the leader coupling part 130 so as to be vertically adjustable.

The lower end of the leader 200 is provided with a screw support portion 210.

Support angles 140 and 220 are provided at the rear left and right sides of the revolving part 120 and the middle part of the screw support part 210 to support the entire equipment including the equipment main body 100 in a stable state at the working position. The support angles 140 and 220 are lower end portions of the inlet cylinders 141 and 221 fixed to the rear end of the turning part 120, and the rods 142 and 222 and the rods 142 and 222 which are installed in the hydraulic cylinders 141 and 221. Pads 143 and 223 coupled thereto.

The leader 200 is supported by the stay 230 in the revolving part 120.

The front auger 300 and the casing auger 400 are disposed at the front side of the leader 200.

The earth auger 300 is an earth auger driver 310 which is installed to be elevated on the front of the leader 200, the upper end is coupled to the lower end of the earth auger driver 310, the lower end of the screw support portion 210 It includes a screw 320 is rotatably supported in) and the beads 330 coupled to the lower end of the screw 320.

The earth auger driver 310 may be detachably coupled to the screw 320 and a hydraulic motor (not shown) for rotating the screw 320 is built therein.

The earth auger 300 further includes an earth auger driving means for lifting and lowering the earth auger driver 310.

The earth auger lift driving means is rotated on both ends of the seesaw 350 and the seesaw 350 is rotatably installed on the upper end of the earth auger winch 340 and the leader 200 is installed in the turning unit 120 The guide pulley 360 and the movable pulley 370 rotatably installed on the upper end of the earth auger driver 310 and the earth auger winch 340 are rotatably installed, and are reversed to the guide rod ladle 360. The tip is configured to include an earth auger rope 380 that is inverted and wound around the movable pulley 370.

The casing auger 400 is a casing auger driver 410 rotatably coupled to the lower end of the casing auger driver 410 and the casing auger driver 410 is installed on the front of the leader 200, and A casing 430 is detachably coupled to the lower end of the casing auger holder 420 and surrounds the screw 320 coaxially.

The casing auger driver 410 has a built-in hydraulic motor (not shown) for rotating the casing auger holder 420 and the casing 430.

The casing auger 400 further includes a casing auger lift driving means for lifting and lowering the casing auger driver 310.

The casing auger lift driving means is rotated on both sides of the seesaw 450 and the seesaw 450 which is rotatably installed on the upper end of the casing auger winch 440 and the leader 200 is installed in the turning unit 120 The guide pulley 460 that is installed to be installed and the movable pulley 470 rotatably installed on the upper end of the casing auger holder 420 and the casing auger winch 440 are wound and guided to the guide pulley 450. And the tip thereof includes a casing auger rope 480 which is reversely wound on the movable pulley 460.

The stone crusher 500 is disposed on the right side of the leader 200.

The crusher input machine 500 includes a crushed stone hopper bracket 510 coupled to the right side of the leader 200, and a crushed stone hopper 520 fixedly installed near the lower end of the crushed stone hopper bracket 510.

The road rammer 600 is disposed on the left side of the leader 200.

The rod rammer 600 is a rod rammer lifting frame 610 and a rod rammer lifting frame 610 fixedly installed on the left side of the leader 200 to be lifted and a rod rammer. A rammer rod 630 coupled to the driver 620 and having a hitting portion 631 at a lower end thereof, and a casing holder 640 coupled to the lower end of the rod rammer driver 620.

The load rammer driver 620 has a built-in hydraulic motor (not shown) for rotating the rammer rod 630.

The load rammer 600 further includes a load rammer elevating driving means for elevating and driving the rod rammer driver 620.

The rod rammer elevating driving means rotates on both ends of the seesaw 660 and the seesaw 660 which are rotatably installed on the upper end of the rod rammer winch 650 and the leader 200 installed in the pivoting unit 120. The guide pulley 670 is installed to be rotatable and the movable pulley 680 rotatably installed on the upper end of the road rammer driver 620 and the road rammer winch 650 and is inverted in the guide pulley 670. The rod rammer rope 690 is guided and the tip thereof is inverted and wound around the movable pulley 680.

The earth auger 300, the casing auger 400, the crusher feeder 500, and the rod rammer 600 are vertical center lines of the screw 320, the casing 430, the crushed hopper 520, and the rammer rod 640. They are positioned within the same radius around the pivot center of the pivot portion 120 and are arranged at angular intervals that do not interfere with each other.

Hereinafter, a method of constructing a vertical impact compacted crushed stone pile at a constant cycle according to the present invention will be described.

First, the operation principle of the earth auger drive means, the casing auger drive means and the rod rammer drive means will be described.

When operating the earth auger winch 340 in the retraction direction, the earth auger rope 380 is guided to the guide pulley 360 and the movable pulley 370 while being wound on the earth auger winch 340 and the movable pulley 370. The earth auger driver 310 is connected to the top of the earth auger rope 380 through it, and when the earth auger winch 340 is operated in a release direction, the earth auger rope 380 is movable with the guide pulley 360. Guided to the pulley 370 is released from the earth auger winch 340 and the earth auger driver 310 connected to the tip of the earth auger rope 380 through the movable pulley 370 is lowered by its own weight.

When the casing auger winch 440 is operated in a rewinding direction, the casing auger rope 480 is guided to the guide pulley 460 and the movable pulley 470 while being wound on the casing auger winch 440 and the movable pulley 470 is moved. The casing auger driver 410 connected to the tip of the casing auger rope 480 is raised, and when the casing auger winch 440 is operated in a release direction, the casing auger rope 480 is guided pulley 460 and a pulley. Guided to 470 is released from the casing auger winch 440 and the casing auger driver 410 connected to the front end of the casing auger rope 480 through the movable pulley 470 is lowered by its own weight.

When the load rammer winch 650 is operated in a rewinding direction, the load rammer rope 690 is guided to the guide pulley 670 and the movable pulley 680 while being wound on the load rammer winch 650 and the movable pulley 680 is moved. The rod rammer driver 620 connected to the tip of the rod rammer rope 690 is raised, and when the rod rammer winch 650 is operated in the disengaging direction, the rod rammer rope 690 is guide pulley 670 and the movable pulley. The load rammer driver 620 connected to the front end of the load rammer rope 690 via the pulley 680 is released by the load rammer winch 650 while being guided to 680 and descends by its own weight.

Figure 4 shows a first embodiment of a method for constructing a vertical impact compacted stone pile pile according to the present invention, Figure 4a is a side view showing the drilling and casing insertion step, Figure 4b shows the drilling and casing insertion step Figure 4c is a side view showing the perforation and casing insertion stage, Figure 4d is a side view showing the crushed stone loading and compaction preparation step, Figure 4e is a side view showing the primary crushed stone loading step, Figure 4f is a casing withdrawal and primary crushed stone compaction Figure 4g is a side view showing the step, Figure 4g is a side view showing the secondary crushing step, Figure 4h is a side view showing the 10th crushed stone compaction and the final crushed pile.

In this embodiment, an example of constructing a crushed stone pile without using a geogrid is shown.

<Step 1> Preparation step for drilling and casing

As shown in FIG. 4A (see FIG. 1),

The equipment main body 100 is moved to a construction position so that the screw 200 of the leader 200 and the earth auger 300 and the casing 420 of the casing auger 400 are kept perpendicular to the working position.

At this time, it is preferable to keep the running unit 110 and the turning unit 120 in a parallel state.

<Step 2> Drilling and Casing Insertion Step

As shown in Fig. 4B,

The casing auger driver 410 of the casing auger 400 as well as allowing the screw 320 and the bead 330 to descend by the earth auger driver 310 and the earth auger driving means of the earth auger 300. The casing auger holder 420 and the casing 430 are rotated and lowered by the casing auger elevating driving means so that the pile hole H is drilled in the ground and the casing 430 is inserted into the pile hole H.

<Step 3> Complete the drilling and casing insertion step

As shown in Fig. 4C,

The earth auger driver 310, the earth auger screw 320, the bead 330, and the casing auger by the earth auger lift drive means and the casing auger lift drive means with the casing 430 separated from the casing auger holder 420. The driver 410 and the casing holder 420 are raised to maintain the casing 430 inserted into the pile hole H.

<Step 4> inputting the crushed stone and preparing the compaction

As shown in FIG. 4D (see FIG. 2),

By turning the revolving part 120 in the clockwise direction, the crushed stone hopper 520 of the crusher input machine 500 is positioned on the pile hole H.

<Phase 5> First Stone input stage

As shown in Fig. 4E,

The crushed stone S supplied to the crushed stone hopper 520 by the excavator C is injected into the casing 430 inserted into the pile hole H.

Once the amount of crushed stone (S) is preferably added to about 90cm on the basis of the casing (430).

<Step 6> Casing withdrawal and crushed stone compacting step

As shown in FIG. 4F (see FIG. 3),

The rod rammer driver 620 and the rammer rod 630 are rotated counterclockwise to rotate the rammer rod 640 of the rod rammer 600 by the rod rammer lifting and driving means. And lowering the casing holder 640 so that the rammer rod 630 is inserted into the casing 430, and the upper end of the casing 430 is coupled to the casing holder 640, and then the rod rammer driving means by the load rammer lifting driving means. The mechanism 620 and the casing holder 640 are raised to slowly pull out the casing 430 while operating the rod rammer driver 620 so that the striking portion 631 of the rammer rod 630 crushes the crushed stone S. The crushed stone pile P1 is formed.

At this time, the primary crushed stone pile (P1) has a height of about 60cm, the diameter is preferably formed to be larger than the inner diameter of the pile hole (H).

<Step 7>

Repeat steps 2 to 6 to form a final crushed stone pile (P).

Figure 4g shows a state in which the secondary crushed stone (S), Figure 4h shows a state in which the 10th crushed stone compaction and the final crushed stone pile (P) is formed.

5 is a view showing a second embodiment of a method for constructing a vertical impact compacted stone pile pile according to the present invention, FIG. 5A is a side view showing a drilling and casing insertion preparation step, and FIG. 5B is a side view showing a drilling and casing insertion step 5C is a side view showing a perforation and casing insertion step, FIG. 5D is a side view showing a crushed stone loading and compaction preparation step, FIG. 5E is a side view showing a primary crushed stone loading step, and FIG. 5F is a casing withdrawal and primary crushed stone compacting step Figure 5g is a side view showing the second crushed stone loading step, Figure 5h is a side view showing the 10th stone compaction and the final crushed stone pile, Figure 5i is a side view showing the lower casing separation step, Figure 5j shows a geogrid insertion step. FIG. 5K is a side view showing the lower casing connection, final compaction and final crushed stone piles. FIG.

In this embodiment, the geogrid is used to construct an example of crushed stone piles.

In this embodiment, steps 1 to 6 of the first embodiment described above are performed, and steps 2 to 6 are repeated, leaving an empty pile hole H between the top of the final crushed stone pile P and the ground. It further comprises the step of inserting a high-strength geogrid (G) to the empty pile hole (H).

It is preferable that the height h of the high strength geogrid G is about five times the diameter d of the pile hole H.

In addition, as shown in FIGS. 5I and 5J, the lower casing 431 corresponding to the height of the pile hole H remaining on the final crushed pile P is detachably coupled to the lower end of the casing 430. Before inserting the geogrid (G) it is preferable to insert the geogrid (G) in the state left in the pile hole (H) remaining on the final crushed stone pile (P) to remove the lower casing (431).

In addition, as shown in Figures 5j and 5k, the road rammer lifting driving means in the state in which the crushed pile (P) is finally chopped in the state in which the geogrid (G) is inserted, and then the lower casing 431 is coupled to the casing 430 By raising the casing 430 by the lower casing 431 is preferably to be withdrawn from the pile hole (H).

1 to 3 shows the vertical impact compacted stone pile pile automation construction equipment according to the present invention,

1 is a side view and a plan view showing the earth auger adjusted to the working position;

2 is a side view and a plan view showing a state in which the crushed stone hopper is adjusted to the working position;

3 is a side view and a plan view showing a state in which the rod rammer is adjusted to the working position,

4 is a view showing a first embodiment of a method for constructing a vertical impact compacted stone pile pile according to the present invention,

Figure 4a is a side view showing the step of preparing the perforation and casing insertion,

Figure 4b is a side view showing the drilling and casing insertion step,

Figure 4c is a side view showing the drilling and casing insertion completion step,

Figure 4d is a side view showing the crushed stone loading and compaction preparation step,

Figure 4e is a side view showing the primary crushed stone loading step,

4f is a side view showing the casing withdrawal and primary crushed stone compacting steps,

Figure 4g is a side view showing the secondary crushed stone loading step,

Figure 4h is a side view showing the 10th crushed stone compaction and the final crushed stone pile,

5 is a view showing a second embodiment of the vertical impact compacted stone pile construction method of a constant period according to the present invention,

Figure 5a is a side view showing the step of preparing the perforation and casing insertion,

Figure 5b is a side view showing the drilling and casing insertion step,

Figure 5c is a side view showing the completion of the perforation and casing insertion,

Figure 5d is a side view showing the crushed stone loading and compaction preparation step,

Figure 5e is a side view showing the primary crushed stone loading step,

Figure 5f is a side view showing the casing withdrawal and primary crushed stone compacting step,

Figure 5g is a side view showing the secondary crushed stone loading step,

5h is a side view showing the 10th crushed stone compaction and the final crushed stone pile,

Figure 5i is a side view showing the lower casing separation step,

Figure 5j is a side view showing a geogrid insertion step,

5K is a side view showing the bottom casing connection, final compaction and final crushed stone piles.

DESCRIPTION OF REFERENCE NUMERALS

100: equipment body 200: leader

300: Earth Auger 400: Casing Auger

500: stone crusher 600: road rammer

Claims (12)

delete An equipment body (100) having a running portion (110) and a turning portion (120) installed on the running portion so as to rotate horizontally; A reader (200) installed in front of the pivot portion (120); An earth auger driver 310 installed on the front of the leader 200 to be elevated, and an upper end thereof are coupled to a lower end of the earth auger driver 310, and a lower end thereof is rotatably supported by the screw support part 210. An earth auger 300 including a screw 320, a bead 330 coupled to a lower end of the screw 320, and an earth auger driving means for lifting and lowering the earth auger driver; A casing auger driver 410 rotatably installed on the front surface of the leader 200, a casing auger holder 420 rotatably coupled to a lower end of the casing auger driver 410, and the casing auger holder 420. A casing auger 400 detachably coupled to the bottom of the casing and including a casing 430 which coaxially surrounds the screw 320 and a casing auger driving means for lifting and driving the casing auger driver; A crusher input machine 500 including a crushed stone hopper; In the compacted crushed stone pile construction equipment consisting of a load rammer 600 that is installed to be elevated on the left side of the leader 200 The crusher input machine 500 is fixed to the crushed hopper bracket 510 is coupled to the right side of the leader 200, the crushed hopper bracket 510 near the bottom, the rod rammer 600 is a rod rammer lifting frame ( The lammer rod 630 and the rod rammer which are coupled to the rod rammer driver 620 and the rod rammer driver 620 which are fixed and installed on the rod rammer lifting frame 610 and have a hitting part 631 at the bottom thereof. And a casing holder 640 coupled to the lower end of the driver 620 and a rod rammer elevating driving means for elevating and driving the rod rammer driver 620, and the earth auger 300 and the casing auger 400. The crusher input machine 500 and the rod rammer 600 have vertical center lines of the screw 320, the casing 430, the crushed stone hopper 520, and the rammer rod 640 around the pivot center of the turning part 120. Located within the same radius and arranged at angular intervals that do not interfere with each other Vertical impact compacting crushed stone pile construction equipment. 3. The method of claim 2, The earth auger lift driving means is rotated on both ends of the seesaw 350 and the seesaw 350 is rotatably installed on the upper end of the earth auger winch 340 and the leader 200 is installed in the turning unit 120 The guide pulley 360 and the movable pulley 370 rotatably installed on the upper end of the earth auger driver 310 and the earth auger winch 340 are rotatably installed, and are reversed to the guide rod ladle 360. Guide equipment of the vertical impact compacted crushed stone piles, characterized in that the tip is configured to include an earth auger rope 380 is reversely wound on the movable pulley (370). 3. The method of claim 2, The casing auger lift driving means is rotated on both sides of the seesaw 450 and the seesaw 450 which is rotatably installed on the upper end of the casing auger winch 440 and the leader 200 is installed in the turning unit 120 The guide pulley 460 which is installed to be installed and the movable pulley 470 rotatably installed on the upper end of the casing auger holder 420 and the casing auger winch 440 are wound and guided to the guide pulley 460. A vertical impact compacting crushed stone pile construction equipment, characterized in that the front end is configured to include a casing auger rope 480 is reversely wound on the movable pulley (470). 3. The method of claim 2, The rod rammer elevating driving means rotates on both ends of the seesaw 660 and the seesaw 660 which are rotatably installed on the upper end of the rod rammer winch 650 and the leader 200 installed in the pivoting unit 120. The guide pulley 670 is installed to be rotatable and the movable pulley 680 rotatably installed on the top of the road rammer driver 620 and the road rammer winch 650 are wound and guided to the guide pulley 670. A vertical impact compacting crushed stone pile construction equipment, characterized in that the front end is configured to include a road rammer rope (690) that is reversely wound on the movable pulley (680). (a) After a predetermined period is completed, the equipment body 100 is moved to the construction position again, and the casing 420 of the screw 320 and the casing auger 400 of the reader 200 and the earth auger 300 are working positions. Perforation and casing insertion preparation step to maintain perpendicular to the perforations; (b) by the earth auger driver 310 and earth auger lifting means of the earth auger 300 to rotate the screw 320 and the bead 330, as well as the casing auger driver of the casing auger (400) The casing auger holder 420 and the casing 430 are rotated and lowered by the 410 and the casing auger lift driving means so that the pile hole H is drilled in the ground and the casing 430 is inserted into the pile hole H. Drilling and casing insertion step; (c) the earth auger driver 310, the earth auger screw 320, and the bead 330 by the earth auger lift driving means and the casing auger lift driving means in a state where the casing 430 is separated from the casing auger holder 420. And the casing auger driver 410 and the casing holder 420 by raising the casing 430 is completed drilling and casing insertion step to maintain the inserted state in the pile hole (H); (d) crushed stone input and compaction preparation step of turning the revolving part 120 clockwise to position the crushed stone hopper 520 of the crusher input machine 500 on the pile hole (H); (e) a first crushed stone input step of injecting the crushed stone S supplied to the crushed stone hopper 520 by the excavator C into the casing 430 inserted into the pile hole H; (f) The rod rammer driver 620 and the rammer rod by the rod rammer lifting driving means in a state in which the turning part 120 is rotated counterclockwise to keep the rammer rod 640 of the rod rammer 600 vertical. 630 and the casing holder 640 is lowered so that the rammer rod 630 is inserted into the casing 430 and the upper end of the casing 430 is coupled to the casing holder 640 and then by the rod rammer lifting driving means. The rod rammer driving mechanism 620 and the casing holder 640 are raised to slowly pull out the casing 430 while operating the rod rammer driver 620 so that the striking part 631 of the rammer rod 630 receives the crushed stone (S). Casing withdrawal and crushed stone compacting step to form the first crushed stone pile (P1); (g) forming a final crushed stone pile (P) by repeating the steps (i) to (i) a vertical impact compacted crushed stone pile construction method of a certain period consisting of. The method according to claim 6, Steps (a) to (f) are performed, and steps (b) to (f) are repeated, leaving an empty pile ball (H) between the top of the final crushed stone pile (P) and the ground, and the empty pile ball ( H) inserting a high-strength geogrid (G) in the vertical impact compacted stone pile construction method of a certain period characterized in that it comprises a. 8. The method according to claim 6 or 7, One time input of crushed stone (S) is a vertical impact compacted stone pile construction method of a constant cycle, characterized in that 90cm on the basis of the casing (430). 8. The method according to claim 6 or 7, Primary crushed stone pile (P1) has a height of about 60cm, the diameter of the vertical impact compacted stone pile construction method characterized in that the diameter is formed larger than the inner diameter of the pile hole (H). The method of claim 7, wherein Height (h) of the high strength geogrid (G) is a vertical impact compacted stone pile construction method of a constant period, characterized in that 5 times the diameter (d) of the pile hole (H). The method of claim 7, wherein The lower casing 431 corresponding to the height of the pile hole H remaining on the final crushed stone pile P is detachably attached to the bottom of the casing 430, and then the lower casing (G) is inserted before the geogrid G is inserted. Method of constructing vertical impact compacted crushed stone piles, characterized in that to insert a geogrid (G) in the state remaining in the remaining pile hole (H) on the top of the final crushed stone pile (P). The method of claim 7, wherein In addition, the crushed pile (P) is finally chopped in the state of inserting the geogrid (G), and then the casing 430 is raised by the rod rammer lifting driving means in the state in which the lower casing 431 is coupled to the casing 430, thereby lowering the casing. 431 is a vertical impact compacted stone pile construction method of a certain period characterized in that the withdrawal from the pile hole (H).

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