JP7280079B2 - Pile construction management system - Google Patents

Description

The present invention relates to a pile construction management system .

When constructing pile foundations, a steel pipe rotary press-in method is applied, in which a steel pipe pile with a helical wing attached to the tip of the steel pipe is pressed into the ground by rotary pressing into the ground using a pile driver. be done. The cast-in-place pile method generates excavated soil that becomes industrial waste, but the steel pipe rotary press-in method can eliminate the generation of this industrial waste. Less load on impact. In addition, by using steel pipe piles with a pile diameter corresponding to the size of the building, it can be applied to pile foundations of buildings of various sizes, from small-scale buildings such as detached houses to large-scale buildings such as condominiums.

As a construction management system for rotating and pressing the steel pipe pile into the ground, a target is attached near the upper end of the steel pipe, and the position information of the target is acquired by automatically tracking the target using a total station. A construction management system has been proposed. This rotary steel pipe placing construction management system further includes an information processing device that calculates steel pipe core coordinates based on target position information and stores the calculated steel pipe core coordinates in a storage unit (for example, patent Reference 1).

By the way, in the initial stage of the steel pipe pile rotation press-in construction, the distance between the top end of the steel pipe pile and the ground is large, so the pile core position at the top end and the pile core position near the ground are different. They often do not always match. Therefore, in order to confirm that the steel pipe pile to be constructed is pressed into the ground at the correct position, it is necessary to locate the center of the pile (or the core position of the pile driving) at a place closer to the ground rather than the upper end of the steel pipe pile. ) is essential. In this regard, in the construction management system described in Patent Document 1 described above, since the target is attached to the steel pipe pile itself, the target must be provided at the upper end of the steel pipe pile. Therefore, since the total station acquires the position information of the target attached near the upper end of the steel pipe pile, there is room for improvement in terms of managing the correct construction position of the steel pipe pile.

Therefore, a construction management system has been proposed that can obtain the pile core position of a steel pipe pile near the ground. More specifically, a steel pipe by a pile driver comprising a drive unit that holds the upper end of a steel pipe pile and presses it into the ground while rotating the steel pipe pile, and a steady member that holds the steel pipe pile in the vicinity of the ground. This is a construction management system that manages the driving construction of piles. This construction management system includes a rail member provided on a steady member and formed with a second rail that surrounds the steel pipe pile, and a second magnet that slides along the second rail as the steel pipe pile rotates. , a prism attached to the second magnet, a measuring device for measuring the position of the prism, and a calculation unit for calculating the pile core position of the steel pipe pile based on the plurality of positions of the prism measured by the measuring device. I have.

A first magnet is slidably provided on the first rail, and the first magnet follows the rotation of the steel pipe pile and slides along the first rail. On the other hand, the second rail is provided with a first restricting member and a second restricting member, and the sliding range of the second magnet is defined by the first restricting member and the second restricting member. A second magnet is arranged in the sliding range. Furthermore, a construction management system is formed by arranging measuring instruments in this sliding range so as to face each other.

In the construction management system described above, the second magnet and the first magnet have magnetic poles different from each other. As the steel pipe pile rotates, the first magnet magnetically attracted to the steel pipe pile slides in the same direction as the steel pipe pile, and when the first magnet reaches the sliding range of the second magnet, it is magnetically attracted to the first magnet. The second magnet slides within the sliding range, and the position of the prism attached to the sliding second magnet is measured by a measuring instrument. According to this construction management system, when the prism attached to the second magnet is reciprocated in the sliding range between the first restricting member and the second restricting member, when the prism is viewed from the measuring instrument, Since the prism is not hidden by the steel pipe pile, the measuring instrument can always measure the position of the prism (see, for example, Patent Document 2).

Japanese Patent No. 5546416 JP 2018-53689 A

However, in the construction management system described in Patent Document 2, as the steel pipe pile rotates, the first magnet slides in the same direction as the steel pipe pile, and as the first magnet slides, the first magnet Since the second magnet, to which the prism is attached in the same direction as the , is slid in the sliding range between the first and second regulating members, The configuration of the included jig tends to be complicated.

The present invention has been made in view of the above problems, and it is possible to manage the construction of steel pipe piles while accurately specifying the pile core position of the steel pipe pile in the vicinity of the ground without using a complicated jig. The purpose is to provide a pile construction management system .

In order to achieve the above object, one aspect of the pile construction management system according to the present invention is
A pile driver in which the upper end of a steel pipe pile is attached to an auger that descends along a leader of a base machine, and the steel pipe pile is inserted into an annular vibration-restraining member attached to the lower part of the leader and is rotationally press-fitted into the ground. A pile construction management system used when constructing a steel pipe pile by
an annular rail member disposed either around the steel pipe pile on the steady rest member or on the ground around the steel pipe pile;
a target traveling along the rail member;
a measuring instrument for measuring at least two different positions of the target;
a mobile terminal owned by an operator of the base machine or a construction manager;
The mobile terminal is
a receiving unit that receives measurement data regarding the two different positions transmitted from the measuring instrument;
and a calculation unit that reads the measurement data regarding the two different positions from the reception unit and calculates the pile core position of the steel pipe pile.

According to this aspect, the annular rail member is disposed either around the steel pipe pile above the steady-state member or on the ground around the steel pipe pile, and the target travels along the rail member. Since it is a construction management system in which at least two different positions of a traveling target are measured by a measuring instrument, the system does not require complicated jigs. In addition, based on the measurement data on at least two different positions of the target traveling along the annular rail member on the anti-vibration member near the ground or on the ground, the steel pipe pile Since the pile core position is calculated, the pile core position of the steel pipe pile that is press-fitted by rotation can be specified with high accuracy.

Here, the "measuring instrument" is an automatic tracking type total station equipped with an automatic tracking function for automatically collimating a target. Moreover, as a "target", prisms, such as a reflecting prism, are mentioned. Furthermore, mobile terminals include smartphones, tablets, personal computers, and the like. The mobile terminal is placed in the operator's seat of the base machine, and the operator of the pile driver can perform rotational press-fitting of steel pipe piles while checking the calculation results displayed on the mobile terminal, or perform construction management. The construction manager present may have a mobile terminal, and the construction manager may check the calculation result displayed on the mobile terminal, or both the operator and the construction manager may have mobile terminals.

Further, another aspect of the pile construction management system according to the present invention has a traveling carriage that travels along the rail member,
The target is mounted on the traveling truck.

According to this aspect, by causing the traveling truck on which the target is mounted to travel along the rail member around the steel pipe pile, the positions of the target at two different points around the steel pipe pile can be measured. Here, unlike the comparatively high rotational speed when the steel pipe pile is rotationally press-fitted, the traveling speed of the traveling carriage is preferably set to an appropriate speed that can be measured by a measuring instrument. In addition, the running target temporarily enters the back of the steel pipe pile and cannot be collimated by the measuring instrument. In this case, it is known that the automatic tracking type total station can again recognize the target that appears again from the side of the steel pipe pile.

In another aspect of the pile construction management system according to the present invention, the rail member is formed by joining a plurality of half-split rail members together,
A roller is attached to the inner surface of the annular rail member so as to freely contact the steel pipe pile.

According to this aspect, the roller is attached to the steel pipe pile on the inner surface of the annular rail member so as to freely contact the steel pipe pile, so that the rail member on which the target travels is cut off from the steel pipe pile in the rotating posture, and the steel pipe pile. The centers of the pile core and the annular rail member can be aligned as much as possible. For example, there is generally a clearance of about 10 mm to 20 mm between the anti-vibration member and the steel pipe pile passing through it. Therefore, when the target is placed directly on the anti-vibration member, an error due to this clearance occurs between the center of the anti-vibration member and the pile core of the steel pipe pile that can move within this clearance. obtain. The error between the pile core of the steel pipe pile and the center of the anti-vibration member can affect the accuracy of the pile core position calculated based on the measurement data in the portable terminal. Therefore, a plurality of rollers that can freely contact the steel pipe piles are attached to the inner surface of the annular rail member, and the clearance between the rail member (the rollers) and the steel pipe piles is set to 0 mm (all the rollers are attached to the steel pipe piles. By making it about 1 or 2 mm at most from the contact state), the error caused by the clearance between the annular rail member and the steel pipe pile can be reduced, and the accuracy of the pile core position calculated by the mobile terminal can be improved.

In another aspect of the pile construction management system according to the present invention, the mobile terminal further has a storage unit,
data relating to a radius r of a movement trajectory circle of the target when the target moves along the annular rail member is stored in advance in the storage unit;
The calculation unit creates two circles having the radius r centered on the two different positions, and one of the points of intersection of the two circles is calculated as the pile core position of the steel pipe pile.

According to this aspect, two circles having the radius r of the movement trajectory circle of the target when the target moves along the annular rail member are created centering on the positions of two different targets. By obtaining two points of intersection and setting one of them (the point of intersection far from the measuring instrument) as the pile core position of the steel pipe pile, the pile core position can be specified with high accuracy.

In addition, one aspect of the mobile terminal that constitutes the construction management system for piles according to the present invention is
A pile driver in which the upper end of a steel pipe pile is attached to an auger that descends along a leader of a base machine, and the steel pipe pile is inserted into an annular vibration-restraining member attached to the lower part of the leader and is rotationally press-fitted into the ground. A mobile terminal that constitutes a pile construction management system used when constructing a steel pipe pile,
The pile construction management system includes a target traveling along an annular rail member disposed on the anti-vibration member or on the ground around the steel pipe pile, and at least two different targets. a measuring instrument for measuring position; and
The mobile terminal is
a receiving unit that receives measurement data regarding the two different positions transmitted from the measuring instrument;
a calculation unit that reads measurement data about the two different positions from the reception unit and calculates the pile core position of the steel pipe pile;
and a display unit for displaying the result of calculation by the calculation unit.

According to this aspect, it is possible to check the pile core position of the steel pipe pile calculated by the calculation section on the display section of the mobile terminal. For example, a portable terminal is placed in the operator's seat of the base machine, and the operator of the pile driver can carry out rotational press-fitting of the steel pipe pile while checking the calculation results displayed on the display unit.

Further, in another aspect of the mobile terminal constituting the pile construction management system according to the present invention, the display unit displays a plane coordinate system, displays an allowable pile core error range in the plane coordinate system, The position of the pile core calculated by the calculation unit is displayed.

According to this aspect, the plane coordinate system (for example, XY plane coordinates) is displayed on the display section, and the allowable pile core error range is displayed in the plane coordinate system, and the pile core calculated by the calculation section is displayed. By displaying the position of , the operator of the pile driver and the construction manager can continue the construction of the steel pipe pile while confirming that the specified pile core is within the allowable pile core error range. In addition, when the pile core is likely to be out of the allowable pile core error range, the rotational press-in direction can be adjusted on the fly. Furthermore, when the pile core is out of the allowable pile core error range, the construction can be immediately interrupted and the steel pipe pile can be placed again at the correct position.

As can be understood from the above description, according to the pile construction management system of the present invention, the pile core position of the steel pipe pile is accurately specified in the vicinity of the ground without using a complicated jig. Able to manage construction work.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows an example of the whole structure of the construction management system of the pile which concerns on embodiment. It is a perspective view which shows the situation before the anti-vibration member, the rail member, the traveling truck, and the target are installed around the lower part of the steel pipe pile. It is a perspective view which shows the situation in which the anti-vibration member, the rail member, the traveling truck, and the target were installed around the lower part of the steel pipe pile. FIG. 4 is a view taken along line IV-IV in FIG. 3; It is a figure which shows an example of the hardware constitutions of the portable terminal which the construction management system of a pile which concerns on embodiment has. It is a figure which shows an example of a functional structure of a portable terminal. It is a figure explaining an example of the content of calculation in the calculating part of a portable terminal. It is a figure which shows an example of the display content in the display part of a portable terminal.

Hereinafter, a pile construction management system according to an embodiment of the present invention and a mobile terminal constituting the pile construction management system will be described with reference to the accompanying drawings. In addition, in the present specification and drawings, substantially the same components may be denoted by the same reference numerals, thereby omitting duplicate descriptions.

[Pile construction management system according to the embodiment]
First, an example of a pile construction management system according to an embodiment will be described with reference to FIGS. 1 to 4. FIG. Here, FIG. 1 is a diagram showing an example of the overall configuration of the pile construction management system according to the embodiment. In addition, FIGS. 2 and 3 are respectively a perspective view showing the situation before the anti-vibration member, the rail member, the traveling truck and the target are installed around the lower part of the steel pipe pile, and the anti-vibration member, the rail member, and the traveling It is a perspective view which shows the situation where the trolley and the target were installed. Furthermore, FIG. 4 is a view taken along line IV-IV in FIG.

The pile construction management system 500 includes a target 100 running around the steel pipe pile P and at a position close to the ground (including on the ground), and collimating the target 100 with a lens to determine the distance to the target 100 and the distance to the target 100. It has a measuring instrument 200 for measuring an angle and a mobile terminal 300. The mobile terminal 300 is mounted on a base machine 10 constituting a pile driver 90 for rotating and press-fitting a steel pipe pile P into the ground G. The measuring instrument 200 and the mobile terminal 300 can communicate via a network 400 typified by the Internet, a LAN (Local Area Network), or the like. Measurement data regarding different positions of the target 100 acquired by the measuring instrument 200 are transmitted to the mobile terminal 300 via the network 400 .

The pile driver 90 includes a base machine 10, a leader 20 supported by the base machine 10, an auger 30 descending along the leader 20, and a steadying member attached at a position near the ground below the leader 20. 50. The upper end of the steel pipe pile P is gripped by the cap 40 at the lower end of the auger 30, and the lower part of the steel pipe pile P is loosely fitted in the hollow of the anti-vibration member 50. Then, the auger 30 is rotated in the Y1 direction to the leader 20 The steel pipe pile P is pressed into the ground G in the Y4 direction while rotating in the Y3 direction. In addition, although the steel pipe pile P in the illustrated example has a helical wing P1 at its tip, steel pipe piles of various forms, such as a form having a helical wing also on the side surface of the steel pipe pile P, can be constructed.

As shown in FIG. 1 , the target 100 travels in the Y5 direction around the steel pipe pile P along the rail member 70 placed on the anti-vibration member 50 . The measuring instrument 200 is, for example, an automatic tracking type total station. A vertical angle and a horizontal angle are obtained, and position coordinates of different positions of the target 100 are calculated. At least two different positions of the running target 100 are measured by the measuring device 200 .

The total station 200 incorporates a computer and has a communication interface that enables communication with an external device (such as the mobile terminal 300 in the illustrated example) (both not shown). The total station 200 may be installed on a known point whose position coordinates are known, and the coordinate information of the known point may be input to a computer, or the position coordinates of one or more known points whose position coordinates are known may be measured. The coordinate information may then be input into a computer, which references the positional coordinates of known points stored in the computer and calculates those positional coordinates based on measurement data for different positions of the target 100 .

Next, with reference to FIGS. 2 to 4, an installation mode in which the traveling carriage 80 having the target 100 is installed on the anti-vibration member 50 via the rail member 70 will be described.

As shown in FIG. 2, the anti-vibration member 50 has two semi-doughnut-shaped half-split members 51 in plan view, and each half-split member 51 is attached to the leader fixing portion 59 via a pivot shaft 54. It is rotatably mounted. Each half-split member 51 has two upper and lower chucks 53 at its ends. When the split member 51 is rotated in the X2 direction toward the steel pipe pile P, both chucks 53 are vertically aligned and the through holes of both chucks 53 communicate vertically. By inserting the chuck pin 55 into the communicating through-hole in the X3 direction, as shown in FIG.

Returning to FIG. 2, two magnetic stands 58 are attached to the upper surface 52 of each half member 51 .

The rail member 70 has two half-doughnut-shaped half rail members 71 similar to the half member 51, and one end of each half rail member 71 is rotatably fastened to each other. It is After transferring the two half-split rail members 71 in the open state shown in FIG. By rotating the split rail member 71 toward the steel pipe pile P side in the X5 direction, the fixed flanges 72 at the ends come into contact with each other. By fitting the fixed cap 74 from above in the X6 direction to the two fixed flanges 72 that are in contact with each other, the annular rail member 70 is formed as shown in FIG. The formed rail member 70 rests on four magnetic stands 58 .

In this way, the rail member 70 is placed on the anti-vibration member 50 so as to be relatively movable while surrounding the steel pipe pile P, so that the rail member 70 does not move largely with respect to the anti-vibration member 50. can be positioned.

Returning to FIG. 2 , a plurality of rollers 73 are rotatably attached to the inner side surface 75 of the half-split rail member 71 so as to be in contact with the steel pipe piles P. As shown in FIG. In this way, a plurality of rollers 73 are attached to the steel pipe pile P on the inner side surface 75 of the rail member 70 so as to be able to contact the steel pipe pile P, so that the rail member 70 on which the target 100 runs is separated from the steel pipe pile P in the rotating posture. However, the pile core of the steel pipe pile P and the center of the annular rail member 70 can be aligned as much as possible.

On the rail member 70, a self-propelled traveling carriage 80 that goes around the steel pipe pile P along the rail member 70 is installed in the X7 direction. The traveling carriage 80 has a width approximately equal to the width of the rail member 70 and has contoured side surfaces having an inner diameter and an outer diameter of the rail member 70 . It is equipped with a motor that rotates the wheels, a battery that drives the motor, and a switch that activates the motor (neither is shown).

A target fixing pin 60 is fixed to the upper surface of the traveling carriage 80 so as to extend upward, and a socket 104 of the target 100 is attached to the target fixing pin 60 from above in the X8 direction. ing. Here, the target 100 in the illustrated example is an omnidirectional target provided with a plurality of prisms 102 and has a built-in spirit level (not shown).

Here, as shown in FIG. 4 , generally there is a clearance s2 of about 10 mm to 20 mm between the steel pipe pile P penetrating through the anti-vibration member 50 . Therefore, when an annular rail member having an inner diameter similar to that of the anti-vibration member 50 is placed on the anti-vibration member 50, the pile core of the steel pipe pile P that can move in this clearance s2 and the rail member An error due to this clearance s2 may occur between the center and the center. The error between the pile core of the steel pipe pile P and the center of the rail member causes a shift in the center of the movement locus circle of the target mounted on the traveling carriage that travels along the rail member. Therefore, in the portable terminal 300, the accuracy of the pile core position calculated based on the measurement data may be affected. Therefore, by attaching a plurality of rollers 73 that rotatably protrude from the inner surface 75 of the rail member 70 to the steel pipe pile P side, the clearance s3 between the rollers 73 and the steel pipe pile P is reduced to 0 mm (a plurality of rollers 73 are all in contact with the steel pipe pile P), the distance is about 1.2 mm at most. As a result, errors caused by the clearance between the rail member 70 and the steel pipe pile P can be reduced, and the accuracy of the pile core position calculated by the mobile terminal 300 can be improved.

The position coordinates of the target 100 traveling in the Y5 direction are measured by the total station 200 at any time throughout the rotation press-fitting of the steel pipe pile P. More specifically, the position coordinates of at least two different positions of the traveling target 100 are measured at each height step of the steel pipe pile P to be press-fitted. The measurement data that is measured at any time in this way is sent at any time via the network 400 to the portable terminal 300 placed in the cockpit of the base machine 10 . In the mobile terminal 300, the pile core position of the steel pipe pile P to be rotationally press-fitted is calculated and displayed at any time by a method described in detail below. The operator of the pile driver can perform rotary press-fitting of the steel pipe pile P while checking the calculation result displayed on the mobile terminal 300 . The portable terminal 300 may be placed in the operator's seat of the base machine 10 as shown in the figure. The calculation results displayed on the mobile terminal may be checked, or both the operator and the construction manager may have mobile terminals and each may check the calculation results displayed on the mobile terminal.

According to the illustrated pile construction management system 500, it is possible to perform construction management of the steel pipe pile P while accurately specifying the pile core position of the steel pipe pile P in the vicinity of the ground G without having a complicated jig. can.

In addition, the pile construction management system 500 shown in the figure is a system in which the target 100 running along the rail member 70 placed on the anti-vibration member 50 is collimated by the total station 200, but the rail member 70 , for example, may be placed on the ground surrounding the steel pipe pile.

[Portable Terminal Constituting Pile Construction Management System According to Embodiment]
Next, with reference to FIGS. 5 to 8, an example of a portable terminal that constitutes the pile construction management system according to the embodiment will be described. Here, FIG. 5 is a diagram showing an example of the hardware configuration of a mobile terminal included in the pile construction management system according to the embodiment, and FIG. 6 is a diagram showing an example of the functional configuration of the mobile terminal. Also, FIG. 7 is a diagram for explaining an example of the contents of calculation in the calculation unit of the mobile terminal. Furthermore, FIG. 8 is a diagram showing an example of display contents on the display unit of the mobile terminal.

The mobile terminal 300 is formed by a smart phone, a tablet, a personal computer, or the like, and FIG. 8 shows the mobile terminal 300 formed by a tablet.

As shown in FIG. 5, the mobile terminal 300 includes a CPU (Central Processing Unit) 302, a RAM (Random Access Memory) 304, a ROM (Read Only Memory) 306, a wireless communication device 308, a display device 310, and an input device 312. and are connected by a system bus 314 so as to be capable of data communication.

The ROM 306 stores various programs and data used by the programs. The RAM 304 is used as a storage area for loading programs stored in the ROM 306 and as a work area for the loaded programs. The CPU 302 implements various functions by processing programs loaded in the RAM 304 . For example, using measurement data regarding different positions of the target 100 transmitted from the measuring instrument 200, the pile core position of the steel pipe pile is calculated, and control is executed to display the calculation result. In addition, the portable terminal 300 may have an auxiliary storage device (not shown) for storing programs installed therein.

The display device 310 is composed of a liquid crystal display or the like, and has a display function of a touch panel, for example. The input device 312 is an electronic component having a sensor that detects contact of a contact with the display device 310 . Methods for detecting the contact of the contact body include an electrostatic method, a resistive film method, an optical method, and the like. The contact body may be a finger of an operator or the like, a dedicated pen, or the like. A wireless communication device 308 is an electronic component such as an antenna that is necessary for communication in a wireless LAN, mobile communication network, or the like.

Under the control of the CPU 302, the mobile terminal 300 functions as the reception section 320, the calculation section 330, the display section 340, and the storage section 350 shown in FIG.

In the process of rotational press-fitting of the steel pipe pile P, measurement data (including position coordinate data of different positions of the target 100 calculated by the measuring instrument 200) regarding different positions of the target 100 are acquired by the measuring instrument 200 at any time. , measurement data regarding different positions of the target 100 that are transmitted from the measuring instrument 200 at any time are received at any time. The received measurement data is stored in the storage unit 350 as needed.

The storage unit 350 stores position coordinate data related to the design pile core (an example of the driving core) of the steel pipe pile P, radius data of the movement locus circle of the target 100, and allowable pile core error data (the pile of the steel pipe pile to be constructed). Data related to the allowable error range between the core and the design pile core), etc. are stored. The radius data of the movement locus circle of the target 100 may be stored in advance in the storage unit 350 based on known information such as the radius of the rail member 70, or the traveling carriage 80 may be made to travel as shown in FIG. The radius data identified by may be stored in the storage unit 350 .

The calculation unit 330 reads measurement data regarding different positions of the target 100 from the storage unit 350 and calculates the pile core position of the steel pipe pile P. FIG. Here, a calculation method in the calculation unit 330 will be described with reference to FIG.

In the calculation unit 330, an XY coordinate system (an example of a plane coordinate system) centered on the design pile core O is created, and the coordinate positions of the targets 100 at different positions read from the storage unit 350 are converted into XY coordinates. Plot in the Y coordinate system. Then, two circles C1 and C2 are created with the coordinate position of the target 100 at different positions as the center and the radius r (both of them being the same) of the movement locus circle of the target 100, and the two intersection points of the two circles C1 and C2. Among them, the intersection point O′ on the far side from the measuring instrument 200 is calculated as the pile core position (calculated pile core position) of the steel pipe pile P being rotationally press-fitted.

As shown in FIG. 8, the display unit 340 displays an XY coordinate system centered on the design pile core O of the steel pipe pile P, and further displays the allowable pile core error range. Then, the calculated pile core position calculated by the calculator 330 is plotted on the XY coordinate system.

An operator of the pile driver 90 or a construction manager can continue construction of the steel pipe pile P while confirming that the specified calculated pile core position is within the allowable pile core error range. In addition, when the calculated pile core position is likely to deviate from the allowable pile core error range, the rotational press-in direction can be adjusted on the fly. Furthermore, when the calculated pile core position is out of the allowable pile core error range, the construction can be immediately interrupted and the steel pipe pile can be re-placed at the correct position.

It should be noted that other embodiments may be possible in which other components are combined with the configurations described in the above embodiments, and the present invention is not limited to the configurations shown here. Regarding this point, it is possible to change without departing from the gist of the present invention, and it can be determined appropriately according to the application form.

10: base machine, 20: leader, 30: auger, 40: cap, 50: anti-vibration member, 51: half-split member, 52: upper surface, 53: chuck, 54: rotating shaft, 55: chuck pin, 58: Magnetic stand, 59: reader fixing part, 60: target fixing pin, 62: jig fixing pin, 70: rail member, 71: half-split rail member, 72: fixing flange, 73: roller, 74: fixing cap, 80 : traveling cart, 90: pile driver, 100: target, 102: prism, 104: socket, 200: measuring instrument (total station), 300: mobile terminal, 320: receiving unit, 330: computing unit, 340: display unit, 350: storage unit, 400: network, 500: pile construction management system (construction management system), G: ground, P: steel pipe pile, P1: spiral wing

Claims (3)

A pile driver in which the upper end of a steel pipe pile is attached to an auger that descends along a leader of a base machine, and the steel pipe pile is inserted into an annular anti-vibration member attached to the bottom of the leader and is rotationally press-fitted into the ground. A pile construction management system used when constructing a steel pipe pile by
an annular rail member disposed either around the steel pipe pile on the steady rest member or on the ground around the steel pipe pile;
a target traveling along the rail member;
a measuring instrument for measuring at least two different positions of the target;
a mobile terminal owned by an operator of the base machine or a construction manager;
The mobile terminal is
a receiving unit that receives measurement data regarding the two different positions transmitted from the measuring instrument;
a computing unit that reads measurement data about the two different positions from the receiving unit and computes the pile core position of the steel pipe pile ,
The rail member is formed by joining together a plurality of half-split rail members,
A pile construction management system, wherein a roller is attached to the inner surface of the annular rail member so as to freely abut against the steel pipe pile. Having a traveling carriage that travels along the rail member,
2. The pile construction management system according to claim 1, wherein the target is mounted on the traveling truck. The mobile terminal further has a storage unit,
data relating to a radius r of a movement trajectory circle of the target when the target moves along the annular rail member is stored in advance in the storage unit;
The calculation unit creates two circles with the radius r centered at the two different positions, and one of the points of intersection of the two circles is calculated as the pile core position of the steel pipe pile. Item 3. The pile construction management system according to item 1 or 2.

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