JP3662470B2 - Suspended mobile pile embedding device and pile embedding method using the same - Google Patents

Description

[0001]
OBJECT OF THE INVENTION
The present invention relates to pile embedding work for strengthening the foundation ground for structures. In particular, the ground target area for pile embedding is a large-scale construction machine such as a crawler pile embedding machine or a mobile crane. Pile embedding work at places where it is impossible to access, for example, narrow construction sites in town, places where there are heights and only accessible to either the high or low side, and places that are not accessible It is an object of the present invention to provide a suspended moving type pile embedding device having a novel structure that can be made possible and a novel pile embedding method using the same.
[0002]
[Prior art]
Various structures surrounding us, such as buildings, bridges, advertising towers, sound barriers, snow fences, etc., as well as their own weight, external loads applied to the structures, such as loads from various loads such as people, luggage, vehicles, etc. To a load caused by natural energy such as earthquakes and strong winds, and it must be designed to be safe and self-supporting. Even if it is stubbornly built, if the supporting strength of the foundation ground that supports it is not sufficiently secured, the structure of the rugged ridge can be damaged and collapsed very easily, and people can enjoy a peaceful daily life. Will be threatened.
[0003]
Therefore, according to the size, public nature, location conditions, etc. of various structures, a sufficient geological survey is conducted at the construction planning stage to grasp the ground condition, and ground reinforcement measures corresponding to it, such as the caisson method, The pile embedding method, etc. was studied, and after considering legal considerations such as pollution control, the optimum method was adopted and implemented, and after a solid ground reinforcement, a structure as designed was built on it. It will follow.
[0004]
One of the most commonly used methods for strengthening the ground has been the pile embedding method that mainly supports the structure by using the frictional resistance with the ground as a reaction force, depending on how the pile is driven. Many types of construction methods that have been classified have been developed and put to practical use. Typical examples of construction methods include pre-boring methods and digging methods in addition to traditional vibration methods and hammering methods. It has become known.
[0005]
In the case of the traditional vibration method or hammering method, the pile is strongly impacted directly using a vibro hammer or a diesel pile hammer, and the pile is strongly inserted into the ground, and its mechanism and structure are simple. In addition, the pile embedding method has been the mainstream for many years because it can carry out the pile embedding work as expected, but in recent years noise and vibration on the surrounding residents have become social problems and are far away from the urban area. Use outside of certain areas such as mountainous areas, coasts, and oceans is regulated by the Noise Prevention Ordinance, and after the establishment of this Noise Prevention Ordinance, pre-boring methods and medium The digging method has become the center of the pile embedding method, and improved and developed methods have been implemented for each company.
[0006]
For example, when looking at a typical pre-boring method, an auger that also serves as a milk injection part is attached to the leader of the crawler pile embedding machine K, and the drilling liquid is ejected from the tip side of the auger head through the milk injection part. The auger is driven to rotate to excavate the ground, and the excavated soil and drilling fluid along the spiral wings of the rotating auger are raised and discharged, and the sediment is discharged from the borehole to the ground surface. After the excavation, the auger is pulled out while injecting cement milk into the excavation hole through the milk injection part, and a predetermined pre-built pile is inserted and buried in the excavation hole. The crawler pile embedding machine K used in the construction method has a structure that supports the guide post K1 with a crane of a mobile crane vehicle, and is one of the construction methods that rely on extremely large construction machines. Ukoto can.
[0007]
In addition, the conventional digging method also supports the lower end of the leader directly on a large crawler, and uses a mobile three-point support machine that is fixed with two stand-off beams K2, and stands along with the leader. The hollow open end pile was pushed in by rotating the earth auger placed in the hollow part while leading the pile hole, and after the pile was pushed to a predetermined depth, the earth auger was pulled up and cement milk inside This is due to the construction of injecting and solidifying, and it is also due to the construction of a large construction machine like the pre-boring method described above, and at the position desired by the leader of this mobile direct-coupled three-point support machine. It is only possible to embed a pile of stakes, and it is also subject to the restriction that it does not work well.
[0008]
The pre-boring method and the digging method that have appeared instead of these traditional vibration methods and hammering methods can be excellent in that they can reliably carry out pile embedding without noise pollution. However, as mentioned above, because they are large construction machines, they are legally used in construction sites where various structures are forested in crowded urban areas, and highways where construction is performed by opening up hills. In construction sites where there are significant differences in height, such as when building various structures such as soundproof walls on the surface, it is impossible to introduce the necessary construction machines and the construction method with excellent corners is also substantial. It was a problem that could not be adopted.
[0009]
This invention has quickly started its development and research as one of those who have been involved in the construction industry for many years in order to deal with the above-mentioned problems of pre-boring method and digging method known as excellent methods. As a result of repeated trial and error and trial production, we finally came up with a new drilling method that enables embedding piles that could not be achieved by conventional methods, and a new configuration used for it. In the following, the configuration of the suspended mobile drilling device will be described in detail along with specific examples.
[0010]
[Structure of the invention]
The suspended mobile pile embedding device of the present invention basically has the following configuration.
That is, with respect to the base beam in which the leveling jack and the reaction force anchor mounting portion are integrally formed on both ends, a leader having a suspended portion formed on the upper end is erected and integrated from substantially the center in the length direction. In addition, a top beam formed by arranging a sheave capable of winding two wires in the vicinity of both ends in the vicinity of the upper end of the leader that does not overlap with the suspended portion forming portion crosses the leader axis. The device skeleton body is integrated so as to be in the shape of the arrangement, while the device frame base beam portion has a pile guide portion vertically penetrating in the vicinity of the leader attachment portion, and the pile guide portion. This is a suspended mobile pile embedding device in which an electric auger raising / lowering winch and a pile mounting winch are respectively disposed at locations away from the vehicle.
[0011]
If the suspension mobile pile embedding device of this basic configuration is based on a more specific configuration, the reaction force anchor mounting portion formed by closely arranging the leveling jack is integrally formed on both ends, At least one of the reaction force anchors on the outside of the base beam having a sufficient length and structural strength with a temporary attachment to the existing pile, from the center in the longitudinal direction, A leader having a predetermined length necessary for embedding and sufficient structural strength and having a suspended portion formed at the upper end is erected and integrated, and does not overlap with the suspended portion forming portion in the vicinity of the upper end of the leader. The top beam formed by arranging sheaves capable of winding two wires in the vicinity of both ends is arranged in a cross manner on the leader axis and is substantially parallel to the base beam. Integrated The base beam portion of the device skeleton top beam, which is substantially directly below one sheave, is provided with a pile guide portion that penetrates vertically, and directly below the other sheave. An electric auger lifting winch and a pile mounting winch are arranged on the base beam portion shifted slightly from the end side, and the wire led out from the electric auger lifting winch through both sheaves Suspension is based on a structure in which the electric auger device is suspended in a vertically movable manner and a pile hanging bracket is attached to the tip of the wire led out from the other pile mounting winch via both sheaves. It can be called a lower movable pile embedding device.
[0012]
Further, in the suspended mobile pile embedding device according to the present invention having the above-described basic structure, reaction force anchor mounting portions each having a leveling jack arranged close to each other are integrally formed at both ends, and at least any one of them. Necessary for embedding piles from the center in the longitudinal direction of a base beam with sufficient length and structural strength that is provided with a temporary attachment to an existing pile on the outside of one reaction force anchor mounting part In a place that has a predetermined length and sufficient structural strength and has a leader with a suspended portion formed at the upper end, integrated, and does not overlap with the suspended portion forming position in the vicinity of the upper end of the leader A top beam formed by arranging sheaves capable of winding two wires in the vicinity of both ends is arranged in a cross manner on the leader axis and integrated so as to be substantially parallel to the base beam. As On the other hand, the base beam portion of the device frame top beam, which is substantially directly below one sheave, is provided with a pile guide portion that penetrates vertically, from the bottom of the other sheave. An electric auger lifting winch and a pile mounting winch are arranged on the base beam part slightly shifted to the end side, and the wire led out from the electric auger lifting winch via both sheaves Suspension of the electric auger unit that can be moved up and down and suspended by attaching a pile hanging bracket to the tip of the wire led out from the other pile mounting winch via both sheaves A mobile pile embedding device is also included.
[0013]
The device skeleton is formed so that it can perform the function of enabling drilling and pile embedding while canceling the drilling reaction force in the pile embedding process itself, and suspended from the crawler crane boom. Locked by the lowered wire, the boom is tilted and freely suspended and moved to the desired pile embedding location within the swivel range, and the standing posture at each pile embedding location is It needs to be formed into something that would be maintained by keeping the wire taut.
[0014]
Therefore, the device skeleton body guides the electric auger for sharing the drilling holes and pile embedding functions, and also suspends the device itself and performs a spine function when moving, and the lower end of the leader The base beam that bears the drilling reaction force applied to the leader with the ground where the pile is embedded, and the electric auger up and down operation, as well as the pile lifting operation, are placed at the appropriate base beam location It is composed of a wire guiding mechanism that allows the wire from the winch to pass through the upper end of the leader, that is, a top beam for incorporation such as a sheave, both of which are formed from a steel material having sufficient strength, and the leader The top beam is located at the bottom of the base beam at the center of the base beam. And it made rigidly integral with people 熔着 like known means.
[0015]
As mentioned above, the base beam functions to transmit the drilling reaction force applied to the leader as a part of the device skeleton to the ground of the pile embedding location, and also to ensure the verticality of the leader. Therefore, it is of a fixed length, such as a length of about 7 to 8 meters if it is a sufficient length, for example, a leader of 10 meters in length, as in the examples described later. The base beam can be adjusted appropriately according to the length of the pile to be embedded, the condition of the ground, and other factors. Separated and formed into a secondary hook on the anchor mounting portion forming side, a main rod to which the leader and both reaction force anchor mounting portions are attached and formed, and a secondary rod on the temporary mounting portion forming side to the existing pile. The vice-basket is appropriately known With a structure that is connected to be stretchable by a step, for example, a secondary hook is inserted into the main pole, connected with a strong connecting structure such as an insertion structure, an attached plate attachment structure, an hiring anchor intermediation structure, It is also possible to fix the connecting positions by hydraulic means, bolting, or the like, both of which are included in the present invention.
[0016]
Then, reaction force anchor mounting portions each having leveling jacks arranged close to each other are integrally formed at both ends of the base beam, and preferably at least one of the reaction force anchor mounting portions is outside the reaction beam anchor mounting portion. When attaching a temporary attachment part to an existing pile and embedding the second and subsequent piles, instead of attaching a reaction force anchor to the reaction force anchor attachment part on the side of the temporary attachment part, the temporary attachment The part was attached to the existing pile, and a part of the drilling reaction force was to be borne by the existing pile, so that the work efficiency was improved and a safer reaction force load was realized. To do.
[0017]
Also, this base beam has a pile guide that is vertically penetrated at a location close to the leader lower end attachment portion and substantially below one sheave as a wire guiding mechanism incorporated in the top beam. It was necessary to provide a part and guide the penetrating part so that the pile to be embedded was correctly positioned at a predetermined location, and shifted slightly from the bottom of the other sheave to the end side. In the place, a winch for raising and lowering the electric auger and a winch for mounting the pile are arranged, and the wire from each winch passes through a pair of sheaves incorporated as a wire guiding mechanism in the top beam, respectively, and one is an electric auger. It is wound around a pulley incorporated at the upper end, and the other is provided with a hook for hanging a pile at its tip.
[0018]
It should be noted that the reader, base beam, top beam combination structure (mutual positional relationship etc. when integrating), reaction force anchor mounting portion incorporated in the base beam, temporary attachment portion, leveling jack, The arrangement of both winches should be in an optimum arrangement relationship in consideration of the balance when the suspension at the upper end of the leader is lifted by a crane.
[0019]
[Related invention]
The present invention relates to a suspended mobile pile embedding device having the configuration as described above, and the present invention includes the following basic configuration using the suspended mobile pile embedding device. Pile embedding methods are included.
That is, it has a predetermined length necessary for pile embedding and sufficient structural strength, and the lower end of the leader in which the top beam incorporating the suspended portion and the wire winding mechanism is integrally arranged on the upper end, The device skeleton, which is integrated with a base beam having a sufficient length and structural strength, is integrally lifted up and down by a mobile crane and moved up and down each time at a predetermined location. While maintaining the upright position, adjust the level of the base beam, attach reaction force anchors to both reaction force anchor mounting parts, and drive them in, so that the base beam is supported by the ground at the drilling location, and electric The auger screw connected to the auger device is made into an interior shape, and the open-ended hollow pile is suspended with a wire led out from the pile mounting winch. After the lower end side is inserted into the pile guide portion, the electric auger device portion is operated, and the drilling reaction force is drilled while canceling with the device skeleton itself to embed the open-ended hollow pile to a predetermined depth. After that, a series of work steps consisting of pulling up only the auger screw with the wire derived from the electric auger lifting winch, filling the hollow part of the open-ended hollow pile left in the ground at a predetermined location, and filling it with pressure Then, after finishing the pile embedding work at a predetermined location, the entire device skeleton is lifted with a mobile crane, and within the mobile crane work area, a plurality of pile embedding locations away from the mobile crane, This is a pile embedding method in which a series of work steps are sequentially repeated without moving and approaching the mobile crane.
[0020]
Furthermore, this invention has a predetermined length and sufficient structural strength required for pile embedding as a pile embedding method that is advantageous for embedding the second and subsequent piles close to each other, and has a suspended portion and a wire at the upper end. The bottom beam of the leader, which is integrated with the top beam with a winding mechanism, is integrated with the base beam with a sufficient length and structural strength. The equipment frame is suspended by a mobile crane, moved up and down, and is installed on either reaction force anchor mounting part side while adjusting the level of the base beam while holding it upright at each moving point. Attaching the reaction force anchor to the other reaction force anchor attachment part, driving in, and making the base beam supported by the ground at the drilling location, the electric auger device part With the connected auger screw as an interior, the open-ended hollow pile is suspended with a wire led out from the pile mounting winch, and the lower end side is inserted into the pile guide portion, and then the electric auger device is activated. After drilling the drilling hole while canceling with the device skeleton itself, the hollow pile with the open end is embedded to a predetermined depth, and then only the auger screw is pulled up with the wire led out from the electric auger lifting winch. After completing the pile embedding work in a predetermined place by a series of work processes that backfill and fill the hollow part of the open-ended hollow pile left in the ground of the place, continue the entire device skeleton body Is lifted by a mobile crane. Moving, without the approach, piles embedding method according to summary the configuration as repeated sequentially previous series of working steps are also included.
[0021]
The device skeleton body represents an electric auger device section that can be raised and lowered with a leader as a guide (that is, a known drilling device having a configuration capable of dealing with noise pollution, and will be developed in the future) Various types of drilling devices of the same type are included, and the same shall apply hereinafter), and drilling is performed by rotating the auger screw (including other drilling functions according to various other drilling devices. The same applies hereinafter). It has to be capable of drilling while canceling the auger screw drilling reaction force by itself, and it can be appropriately drilled and piled up by various known mobile cranes. It is suspended and moved up and down, and the standing state in the same place is supported by the tension of the hanging wire of the mobile crane. It is not such thing as load is applied to resist the force. In addition, within the operating range of the mobile crane, the movement of the device skeleton and the drilling are repeated without moving the mobile crane itself.
[0022]
Prior to drilling work, the level of the machine skeleton that is suspended and moved up and down by a mobile crane to the desired drilling spot must be adjusted at the drilling spot in order to realize the verticality of the leader. After that, as a process for making it possible to cancel the drilling reaction force on its own, the work is performed so that the leader that directly applies the drilling reaction force is stably connected to the ground at the drilling location. carry out.
[0023]
Therefore, the apparatus skeleton body has a structure in which a base beam having a sufficient length and structural strength is formed at the lower end of the leader and a reaction force anchor mounting portion is formed at each of both ends is firmly integrated. The reaction beam anchors are attached to the reaction beam anchor mounting portions of the base beam, and the reaction force anchors are firmly driven into the ground for integration (if necessary, the level is adjusted thereafter. Drilling work that can counteract the drilling reaction force of the leader indirectly through the base beam connected to the ground by these reaction force anchors. It is to make. At that time, for those using a base beam that can adjust the distance between the reaction force anchors, adjust the total length of the base beam according to the ground strength and depth of the drilling location. It can be very advantageous to ensure that cancellation is achieved.
[0024]
Following the first drilling operation at the desired location, for the second and subsequent drilling operations, as with the first drilling, the reaction force anchors were mounted on the reaction beam anchor mounting portions of the base beam, respectively. Of course, there is no problem even if the steps as described above are repeated so that the reaction anchor is firmly driven into the ground and integrated. However, at least one of the reaction force anchors on the side of the anchor is installed in advance. Appropriate temporary attachment means to the existing pile (that is, the pile embedded in the pile hole that has been drilled), for example, a sandwich structure with a belt-like metal fitting, a fitting with a ring-like metal fitting It is formed in a structure in which various known means such as a combined structure are taken, and at least one end side of the base beam is not a reaction force anchor but is connected to and supported by the existing pile by the temporary attachment means. It is the way the process so as to adopt may be those to be simplified spoofing by one upon each typing process the reaction force anchor two.
[0025]
Thus, when the device skeleton is held upright by the mobile crane and the level adjustment is completed, the auger screw is rotated by the operation of the electric auger device portion incorporated in advance in the device skeleton, The ground is drilled with an auger head, and the process proceeds to a pile embedding process in which a predetermined pile is gradually settled. The drilling reaction force applied from the auger head to the device frame through the auger screw and electric auger unit Can be canceled by the device skeleton itself supported by the ground, and a load is not applied to the mobile crane side in which the device skeleton is raised.
[0026]
The pile embedding process needs only to be carried out through a process similar to that of the conventional digging method, and it is sufficient to lift and lower the electric auger while leaving only the pile that has been embedded to the specified depth. Pull up the auger screw with the wire derived from the winch, backfill the earth and sand and crushed stone, proceed with filling as usual, and when the pile embedding at the predetermined place is completed, the entire device skeleton is lifted with a mobile crane Repeats the sequence of work steps up to that point in a mobile crane work area, without moving or approaching the mobile crane at multiple pile embedding locations away from the mobile crane. At the stage where multiple pile embedding work has been completed within the mobile crane work area, the work area where the next multiple pile embedding work is required for the first time In place of the one in which moving the mobile crane to the travelable place.
In the following, the suspension moving type drilling device of the present invention, which has been described in detail so far, and the configuration of the pile embedding method using the same will be described in a more specific manner. Specific examples will be taken and explained.
[0027]
[Example 1]
FIG. 1 is an overall side view of a suspended mobile drilling device having a typical configuration according to the present invention and supported in an upright shape, and FIG. 2 is a schematic view showing a suspended state by a mobile crane. 3 to 8 are side views schematically showing how the suspended mobile drilling device is used in the process of carrying out the pile embedding method of the present invention.
[0028]
As can be clearly seen from the overall side view of FIG. 1, the suspended mobile drilling device for this embodiment has a box-type thick hollow section with a total length of about 10.5 m and a side of 400 mm. Compared to the leader 1 made of steel and having a suspended portion 11 at the upper end, the lower end of the leader 1 is substantially the same section as the leader 1 and has a substantially central portion of the base beam 2 having a total length of about 7 m. Are welded and integrated so that they are in an orthogonal arrangement, and at the same upper end side, the portion that does not overlap with the portion where the hanging portion 11 is formed is an intersection arrangement on the axis of the leader 1, By attaching and welding two thick steel plates with a length of about 2 m and a width of about 300 m from both sides so as to be substantially parallel to the base beam 2, a top beam 3 is obtained. A device bone that is shaped like a roughly vertical letter-shaped structure. And it has a body.
[0029]
The apparatus skeleton top beam 3 is provided with two wires 41 and 51 led out from an electric auger lifting winch 4 and a pile mounting winch 5, which will be described later, respectively, so as to form separate winding paths. As a wire guiding mechanism for guiding the beam 3 from one end side to the other end side, a pair of sheaves 31 and 32 are arranged near both ends.
[0030]
On the other hand, the base beam 2 has reaction force anchor mounting portions 21 and 21 integrally formed at both end sides, and inside the reaction force anchor mounting portions 21 and 21, each of the reaction force anchor mounting portions 21 and 21. Leveling jacks 22 and 22 are provided adjacent to each other, and reaction force anchors 21a and 21a are inserted into the reaction force anchor mounting portions 21 and 21 through the base beam 2 in the vertical direction, respectively. It is formed so that it can be placed in the ground by appropriate means, and in either case, in this embodiment, it is temporarily attached to the outer side of the reaction force anchor mounting portion 21 on the pile guide portion 24 forming side with respect to the leader 1. It is assumed that the portion 23 is formed, and instead of inserting and driving the reaction force anchors 21a and 21a into both reaction force anchor mounting portions 21 and 21, the temporary attachment portion 23 is connected to an existing pile, The other side The insertion and placement process of the anchor 21a is omitted to simplify the work, and the base beam 2 is connected to the ground in a more stable state, so that the entire device skeleton is substantially grounded at the ground of the drilling location. The structure is such that it is supported and can counteract the drilling reaction force, and the base beam 2 is leveled by adjusting the leveling jacks 22 and 22, so that the verticality of the leader 1 is substantially improved. Can be secured.
[0031]
Further, the base beam 2 is provided with a pile guide portion 24 vertically penetrating in a portion substantially corresponding to a portion of one sheave 32 incorporated as a wire guiding mechanism in the top beam 3. An electric auger elevating winch 4 and a pile mounting winch 5 are disposed at a position slightly shifted from the position immediately below the other sheave 31 to the end side. The electric auger device section 6 is suspended from the wire 41 led out through the wire 32 so as to be movable up and down, and the pile hanging bracket is attached to the tip of the wire 51 led out from the other pile mounting winch 5 through the sheaves 31 and 32. 52 is attached.
[0032]
The suspended mobile drilling device having the typical structure of the present invention formed as described above has, for example, a housing complex formed by opening up a mountainous area, and a position lower than the constructed land is high-speed. As in the case where it is necessary to install a soundproof wall when the road is open and is higher than the expressway road surface, it is a place with a height and the side where the structure is installed is large in a residential area When the construction site is a site where the construction machine is not suitable and can only be accessed from the highway road surface on the lower side, the mobile crane C is inserted on the highway side, and its hanging hook C2 After lifting the suspension part 11 at the upper end of the apparatus skeleton body leader 2, the boom C1 is swiveled and tilted to move to the desired construction site at the upper end of the road slope, and within the working range of the mobile crane C, Away from mobile crane C The drilling point number, the movement of the mobile crane C, will be used to sequentially drilling, pile embedding method of construction, etc. of the pile buried without the approach.
[0033]
First, the mobile crane C is suspended to move the device skeleton to the desired drilling and embedding location, so that the center of the pile guide portion 24 of the base beam 2 coincides with the pile embedding center of the drilling location. At the same time, the base beam 2 is leveled by lowering and grounding and operating the leveling jacks 22 and 22, and the reaction force anchors 21a and 21a are inserted and driven in the reaction force anchor mounting portions 21 and 21, respectively. In addition, the verticality of the leader 1 is substantially secured, and the open-ended hollow steel pipe pile 8 prepared in the vicinity of the drilling hole is attached to the sheaves 31 and 32 from the pile mounting winch 5. An auger screw 7 that is lifted by a pile hanging metal fitting 52 at the tip of the wire 51 that is led out and connected to a lower end of the electric auger device 6 by a connecting rod via a soil removal adapter 9 So as thereby to insert the lower end from above into the pile guide unit 24 of the base beam 2, were allowed to set up, thus removing the bracket 52 hanging pile from the open ended hollow steel pipe pile 8.
[0034]
Subsequently, by operating and lowering the electric auger device section 6, the auger head 71 at the tip of the auger screw 7 is rotated and excavated to dig down the ground at the lower end of the open-ended hollow steel pipe pile 8, The drilling operation is continued until the predetermined depth is reached, and the soil generated in the process is discharged from the soil removal adapter 9 to the ground, after the open-ended hollow steel pipe pile 8 is lifted by the spiral blade of the auger screw 7 When the hollow steel pipe pile 8 with the open end is settled down to a predetermined depth, the electric auger device unit 6 is stopped or reversely operated while the electric auger device unit 6 is operated by the electric auger lifting / lowering winch 4. Pull up only the auger screw 7 and leave only the open-ended hollow steel pipe pile 8 in the ground, and then backfill and fill the sediment and crushed stone that have accumulated. After completing the process of embedding the hollow steel pipe pile 8 with the open end at the predetermined location, the mobile crane C is now lifted away from the same point by operating the mobile crane C, and the operating range of the boom C1 of the mobile crane C is within the operating range. Rotate and move to other pile embedding locations in the area, and then repeat a series of pile embedding methods that are similarly installed, drilling, and pile embedding in the mobile crane C work area. Thus, the pile embedding method that does not require the mobile crane C to move and approach at a plurality of pile embedding locations away from the mobile crane C is completed.
[0035]
In this series of pile embedding processes, in the second and subsequent pile embedding methods in the same place, the insertion of the reaction force anchor 21a in one of the reaction force anchor mounting portions 21, 21 and the placing step are omitted. In addition to simplification of work, it is possible to adopt a process that is intended to achieve a more stable connection to the ground, and it is not necessary in this embodiment, but it is necessary. For example, the base beam 2 should have a structure that can be adjusted in length, and the base beam 2 of the optimum length can be used at the stage prior to the equipment frame installation process, depending on factors such as the ground conditions at the drilling location and the pile length. In addition, it is possible to carry out the subsequent steps.
[0036]
[Function and effect]
The suspended mobile pile embedding device and the pile embedding method using the suspended mobile pile embedding device of the present invention configured as described above can be manufactured with an extremely simple structure. Compared to conventional large-scale construction machines dedicated to pile driving, if the machine can be made much cheaper and a mobile crane can be prepared, the desired drilling location of the mobile crane can be obtained. Pile embedding work within the work area can be done efficiently, so pile embedding work at construction sites where it is difficult to put in large construction machines from the past It is possible to exhibit an extremely great feature that it can be implemented economically, safely and quickly.
[0037]
In particular, the suspended mobile pile embedding device having a structure representative of the present invention taken up in the embodiments is realized as being able to demonstrate their features without any problems, and therefore a pile using the same. The embedding method can be carried out smoothly and reliably as expected, and it can be expected to have the excellent effect of becoming extremely practical, which is very useful for pile embedding work in this kind of place It has become.
[0038]
As described above, the suspended mobile pile embedding apparatus of the present invention and the pile embedding method using the same make it possible to achieve the intended purpose by a characteristic new structure, However, as the development and expansion of the high-speed transportation network progresses and the opportunities to mix the living space with the construction sites of various structures increase more and more, noise pollution and hazards that hinder people's lives As a superior technology that enables the construction of the desired structure without bringing about a high level of appreciation, it is expected that it will be widely adopted and popularized not only in the construction industry, but also in various fields. The
[Brief description of the drawings]
The drawings show one embodiment representative of the present invention.
FIG. 1 is an overall side view of a suspended mobile drilling device having a typical configuration according to the present invention and supported upright.
FIG. 2 is a side view schematically showing a hanging manner by a mobile crane.
FIG. 3 is a side view schematically showing a usage mode following the FIG. 2 of the suspended mobile drilling device in the process of implementing the pile embedding method of the present invention.
FIG. 4 is a side view schematically showing a usage mode following FIG. 3 of the suspended mobile drilling device in the process of carrying out the pile embedding method of the present invention.
FIG. 5 is a side view schematically showing a usage mode following the FIG. 4 of the suspended mobile drilling device in the process of carrying out the pile embedding method of the present invention.
FIG. 6 is a side view schematically showing a usage mode following FIG. 5 of the suspended mobile drilling device in the process of implementing the pile embedding method of the present invention.
FIG. 7 is a side view schematically showing a usage mode following the FIG. 6 of the suspended mobile drilling device in the process of carrying out the pile embedding method of the present invention.
FIG. 8 is a side view schematically showing a usage mode following the FIG. 7 of the suspended mobile drilling device in the process of implementing the pile embedding method of the present invention.
FIG. 9 is a side view showing an outline of a conventional large-sized pile driver.
[Explanation of symbols]
1 leader
11 Same hanging part
2 Base beam
21 Reaction force anchor mounting part
21a Same reaction force anchor
22 Same leveling jack
23 Same temporary wear
24 Same pile guide
3 Top beam
31 Same Sheave
32 Same Sheave
4 Electric auger lifting winch
41 Same wire
5 Pinch mounting winch
51 Same wire
52 Same hanging bracket
6 Electric auger unit
7 Auger screw
71 Same Auger Head
8 Hollow steel pipe pile with open end
9 Earth removal adapter
C Mobile crane
K crawler pile embedding machine
K1 Guide post
K2 same post
M Ogre

Claims (7)

  Necessary for embedding piles from a substantially central position in the longitudinal direction of a base beam having a sufficient length and structural strength in which reaction force anchor mounting parts formed by placing leveling jacks in close proximity are integrally formed at both ends. A leader having a predetermined length and sufficient structural strength and having a suspended portion formed at the upper end is erected and integrated, and there are 2 in the vicinity of the upper end of the leader that does not overlap the suspended portion forming portion. A top beam in which sheaves capable of winding a wire are arranged in the vicinity of both ends are arranged so as to cross the leader axis and integrated so as to be substantially parallel to the base beam. The base beam portion of the device skeleton top beam, which is substantially directly below one of the sheaves, is provided with a pile guide portion that penetrates in the vertical direction. An electric auger lifting winch and a pile mounting winch are arranged at the base beam portion shifted slightly from the bottom to the end side, and are derived from the electric auger lifting winch via both sheaves. The electric auger device is suspended from the wire so that it can be raised and lowered, and a pile hanging bracket is attached to the tip of the wire led out from the other pile mounting winch via both sheaves. Suspended mobile pile embedding device.   A reaction force anchor mounting portion in which leveling jacks are arranged close to each other is integrally formed on both ends, and at least one of the reaction force anchor mounting portions is provided with a temporary attachment portion to an existing pile. A leader having a predetermined length required for pile embedding and a sufficient structural strength from the center in the longitudinal direction of the base beam having a sufficient length and structural strength, and having a suspended portion at the upper end. The top beam is formed by arranging sheaves capable of winding two wires in the vicinity of both ends near the upper end of the leader and not overlapping with the hanging part forming part. The device skeleton is integrated with the leader axis so as to be substantially parallel to the base beam, and the device skeleton top beam is substantially directly below one sheave. The corresponding base beam part is provided with a pile guide part that penetrates up and down, and the base beam part that is shifted slightly from the bottom of the other sheave to the end side has an electric auger lifting winch and pile. A mounting winch is provided, and the electric auger device is suspended from the electric auger lifting winch via the both sheaves so that the electric auger device can be lifted and lowered. A suspended mobile pile embedding device characterized in that a pile hanging metal fitting is attached to a wire tip led out via the wire.   The base beam is divided and formed into both end portions where both reaction force anchor mounting portions are formed and the main portion between them, and both can be connected by an appropriate structure such as an insertion structure, an attachment structure, an attachment structure, etc. The suspended mobile pile embedding device according to claim 1 or 2, wherein the distance between both reaction force anchor mounting portions can be appropriately adjusted.   At least one of the reaction force anchor mounting portion and the temporary attachment portion to the existing pile formed on the outside thereof is divided and formed, and both are inserted, the attachment structure, the attachment plate structure, and other appropriate means 3. The suspended mobile pile driving device according to claim 2, wherein the distance between the other reaction force anchor mounting portion and the temporary attachment portion to the existing pile can be adjusted as appropriate. . It has a predetermined length required for pile embedding and sufficient structural strength, and the upper end of the leader is integrated with a suspended beam and a top beam incorporating a wire winding mechanism. The device skeleton, which is integrated with a base beam with a sufficient length and structural strength, is integrated with a force anchor mounting part, and is suspended and moved up and down by a mobile crane. In addition to adjusting the level of the base beam, the reaction beam anchors are mounted on both reaction force anchor mounting parts, driven in, and the base beam is supported by the ground at the drilling location. The auger screw connected to the part is made into an interior shape, and the open-ended hollow pile is suspended with a wire derived from the pile mounting winch, and its lower end After inserting the hollow guide pile to a predetermined depth by operating the electric auger device part and then drilling while counteracting the drilling reaction force with the device skeleton itself, By pulling up only the auger screw with the wire led out from the electric auger lifting winch, backfilling the earth and sand etc. in the hollow part of the open-ended hollow pile left in the ground at a predetermined location, and by filling a series of work steps, After completing the pile embedding work at a predetermined location, the entire device skeleton body is subsequently lifted by a mobile crane, and the mobile crane work area is located within a plurality of pile embedding locations away from the mobile crane. The suspension transfer according to any one of claims 1 to 4, wherein the series of work steps are sequentially repeated without moving or approaching the crane. Pile embedding method using the Shikikui implant device. It has a predetermined length required for pile embedding and sufficient structural strength, and the upper end of the leader is integrated with a suspended beam and a top beam incorporating a wire winding mechanism. The device skeleton, which is integrated with a base beam with a sufficient length and structural strength, integrated with a force anchor mounting part, is suspended by a mobile crane, moved up and down, and raised at each moving point. While holding the base beam, adjust the level of the base beam, temporarily attach the existing pile to one of the reaction force anchor mounting parts, and attach and drive the reaction force anchor to the other reaction force anchor mounting part. The beam is supported by the ground at the drilling location, and the auger screw connected to the electric auger device is made into an interior, and the open-ended hollow pile is attached to the pile mounting window. Hang it with the wire led out from the hose and insert the lower end side into the pile guide part, then operate the electric auger device part, and drill the hole reaction while counteracting the drilling reaction force with the device skeleton itself After embedding the open hollow pile to a predetermined depth, pull up only the auger screw with the wire derived from the electric auger lifting winch, and backfill the hollow part of the open hollow pile left in the ground at the predetermined location. Then, after completing the pile embedding work in a predetermined place by a series of work steps to be filled, the entire device skeleton body is lifted with a mobile crane, within the mobile crane work area, from the mobile crane Now repeats the above series of work steps sequentially without moving or approaching the mobile crane at multiple remote pile embedding locations. DOO characterized, piles embedding method using the down-type pile implantable device hanging as set forth in any one of claims 1 to 4.   By using an equipment skeleton that has a variable base beam length, and adjusting the overall length of the base beam according to the ground strength of the drilling location, the drilling reaction force is optimally applied to the equipment skeleton. The pile embedding method according to claim 5 or 6, wherein drilling is possible while canceling with the body itself.

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