JP2017002710A - Construction condition monitoring method, construction condition monitoring apparatus, and automatic construction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction condition monitoring method that can ensure a pile material being fitted and press-fitted.SOLUTION: A construction condition monitoring method is provided for monitoring construction conditions in which pile materials are fitted to each other by a joint formed along a longitudinal direction of pile materials and multiple pile materials are continuously disposed in the ground. The construction condition monitoring method comprises: a first step of disposing a preceding pile material 1-1 where a detection part 20b-1, ... a detection part 20b-n are installed; a second step of making a rearward joint 16a-2 in a following pile material 1-2 fit to a front joint 16b-1 in the preceding pile material 1-1, and inserting the following pile material 1-2; and a third step of monitoring that the following pile material 1-2 is inserted while being fitted with the preceding pile material 1-1, based on a detection state of the detection part 20b-1, ... the detection part 20b-n while inserting the following pile material 1-2 in the second step.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a construction state monitoring method, a construction state monitoring device, and an automatic construction device.

  Conventionally, as a construction technique for pressing pile materials such as steel sheet piles and steel pipe sheet piles into the ground, joints formed along the longitudinal direction of the pile materials are fitted to each other, and a plurality of pile materials are continuously ground. A technique for press-fitting inside is known. By this technique, a wall body made by connecting pile materials side by side, such as earth retaining walls and water blocking walls, is constructed in the ground. As a conventional technique, for example, a steel sheet pile driving method for fitting a subsequent steel sheet pile as described in Patent Document 1 to a preceding steel sheet pile is known.

  Conventionally, as a technique for measuring an underground state, a technique described in Patent Document 2 below is known. Patent Document 2 describes a ground evaluation device and the like that make it possible to determine whether or not an excavator has reached a predetermined ground. The ground evaluation device disclosed in Patent Document 2 determines whether or not the excavator has reached the ground by analyzing a sound correlated with the operating state of the excavator.

  Further, conventionally, as techniques for detecting the fitting state of an object, techniques described in Patent Document 3 and Patent Document 4 are known. Patent Document 3 describes that a fitting state of a snap fit mechanism provided in an article is determined based on an assembly sound between structures. In Patent Document 4, in order to verify whether the structure is reliably fitted even under environmental noise, a frequency analysis of an acoustic signal including a fitting sound is performed, and a signal level of a specific frequency is a threshold value. A technique for determining that the value exceeds the limit is described.

JP 2009-270361 A JP 2011-038257 A Japanese Patent Laid-Open No. 2004-243501 JP 2010-161045 A

  However, although the steel sheet pile driving method described in Patent Document 1 performs an operation of reducing the resistance of the steel sheet pile joint, the steel sheet pile is press-fitted in a state of being fitted to another steel sheet pile. It is not guaranteed. Moreover, since the ground evaluation apparatus etc. which were described in patent document 2 are evaluating the ground based on a sound, the state of the structure press-fitted in the ground cannot be detected. Furthermore, in the techniques described in Patent Documents 3 and 4, in order to detect a sudden change in sound due to the operation of the structure, the technique for ensuring that the pile material is gradually press-fitted into the ground. Not applicable.

  This invention is made in view of said subject, Comprising: The construction condition monitoring method, construction condition monitoring apparatus, and automatic construction apparatus which can be guaranteed that the pile material is fitted and inserted. It is intended to provide.

  (1) One aspect of the present invention is a construction state monitoring method in which pile members are fitted together by a joint formed along the longitudinal direction of the pile members, and the construction state of a plurality of pile members is monitored. A first step of placing the preceding pile material in the ground, and a joint of the subsequent pile material disposed in the ground subsequent to the open joint of the preceding pile material previously disposed in the ground The second step of inserting the subsequent pile material into the ground, and the second pile step, while inserting the subsequent pile material, installed in the preceding pile material or the subsequent pile material A third step of monitoring that the joint of the subsequent pile material is inserted while fitting with the joint opened of the preceding pile material based on the detection state of the detection unit; is there.

  (2) One aspect of the present invention is a construction state monitoring method for fitting a pile material to each other by a joint formed along the longitudinal direction of the pile material and monitoring the construction state of the plurality of pile materials, A first step of placing a preceding pile material having a detection unit in the joint to be opened in the ground, and a subsequent underground with respect to the opened joint of the preceding pile material previously placed in the ground A second step of inserting the subsequent pile material into the ground by fitting a joint of the subsequent pile material arranged in the ground, and the detection unit while inserting the subsequent pile material in the second step A third step of monitoring whether the joint of the subsequent pile material is inserted while being fitted with the joint opened of the preceding pile material based on the presence or absence of the transmitted signal, and a construction state monitoring method comprising: It is.

  (3) One aspect of the present invention is the above-described construction state monitoring method, wherein an electric wire extending over the entire length in the longitudinal direction of the pile material is provided as the detection unit in the joint in which the preceding pile material has been opened. The third step monitors that the joint of the succeeding pile material is inserted while fitting with the joint of the preceding pile material opened based on the energized state of the electric wire.

  (4) One aspect of the present invention is the construction state monitoring method described above, wherein the electric wire is provided in a joint that is opened in the preceding pile material, and the lower end of the electric wire is opened in the preceding pile material. A projecting portion protruding into the fitting region of the joint of the subsequent pile material is formed in the joint made, and the third step is a lower end of the subsequent pile material inserted while being fitted to the preceding pile material By directly or indirectly colliding with the convex part, the convex part of the electric wire is cut and the energized state is changed to the non-energized state, so that the joint of the succeeding pile material is made of the preceding pile material. Monitor insertion while mating with open joint.

  (5) One aspect of the present invention is the construction state monitoring method described above, wherein the joint of the subsequent pile material that is fitted to the joint that has been opened of the preceding pile material has a total length in the longitudinal direction of the pile material. An electric wire extending over is provided as the detection unit, and in the third step, the joint of the subsequent pile material is inserted while fitting with the joint opened of the preceding pile material based on the energized state of the electric wire. To monitor.

  (6) One aspect of the present invention is the above-described construction state monitoring method, wherein the electric wire is provided in a joint of the subsequent pile material that is fitted to the joint that is opened in the preceding pile material, The pile material has, at the lower end of the opened joint, a projecting blade portion that projects into the fitting region of the joint of the subsequent pile material in the joint that has been opened of the preceding pile material, and the third step includes: When the electric wire provided in the subsequent pile material inserted while fitting into the preceding pile material comes into contact with the protruding blade portion, the electric wire is cut and becomes a non-conductive state from an energized state, It is monitored that the joint of the succeeding pile material is inserted while fitting with the joint of the preceding pile material that has been released.

  (7) One aspect of the present invention is the construction state monitoring method described above, wherein the electric wire is embedded in a water stop material provided in the joint.

  (8) One aspect of the present invention is the construction state monitoring method described above, wherein the detection unit includes a transmission unit, and the third step is based on a radio signal transmitted by the detection unit. It is monitored that the joint of the succeeding pile material is inserted while fitting with the joint of the preceding pile material that has been released.

  (9) One aspect of the present invention is the construction state monitoring method described above, wherein the first step includes the first optical communication unit installed in a joint opened as the detection unit. Placing the material, the second step placing the succeeding pile material having a second optical communication part installed in the joint of the succeeding pile material, and the third step comprising the first light Based on the light detected by the communication unit or the second optical communication unit, it is monitored that the joint of the succeeding pile material is inserted while being fitted to the joint opened of the preceding pile material.

  (10) One aspect of the present invention is the above-described construction state monitoring method, wherein the preceding pile material or the subsequent pile material contains the detection unit and a line that transmits a signal detected by the detection unit. The third step monitors that the succeeding pile material joint is inserted while fitting with an open joint of the preceding pile material based on a signal transmitted to the track. .

  (11) One aspect of the present invention is the construction state monitoring method described above, wherein the third step is a signal output by the detection unit and transmitted to the preceding pile material or the subsequent pile material. Based on this, it is monitored that the succeeding pile material is inserted while fitting with the preceding pile material.

  (12) One aspect of the present invention is the construction state monitoring method described above, wherein the third step is based on a correspondence relationship between the penetration length measured by the penetration length measurement unit and the detection state of the detection unit. Then, it is monitored that the joint of the succeeding pile material is inserted while being fitted to the joint of the preceding pile material that has been released.

  (13) One aspect of the present invention is the construction state monitoring method described above, wherein the first step or the second step includes the preceding pile material or the first pile material in a state where the detection unit is protected by a protective material. The subsequent pile material is arranged.

  (14) One aspect of the present invention is the construction state monitoring method described above, wherein the first step or the second step includes the detection unit driven by a built-in battery. Place pile material.

  (15) One aspect of the present invention is the above-described construction state monitoring method, wherein the first step and the second step arrange a steel sheet pile as the pile material.

  (16) According to one aspect of the present invention, the joint of the subsequent pile material that is subsequently disposed in the ground is fitted to the joint that has been previously disposed in the ground and the joint of the previous pile material that is opened. During the insertion of the subsequent pile material, the signal input unit to which the signal output by the detection unit installed in the preceding pile material or the subsequent pile material is input, and the signal input unit is input And a monitoring unit that monitors that the joint of the subsequent pile material is inserted while being fitted with the joint opened of the preceding pile material, based on a detection state based on a signal. .

  (17) According to one aspect of the present invention, a joint of a subsequent pile material that is subsequently disposed in the ground is fitted to a joint that has been previously disposed in the ground, and the joint of the preceding pile material that is disposed in the ground. During the insertion of the subsequent pile material, the signal input unit to which the signal output by the detection unit installed in the preceding pile material or the subsequent pile material is input, and the signal input unit is input A monitoring unit for monitoring that the joint of the succeeding pile material is inserted while fitting with the joint of the preceding pile material based on the detection state based on the signal, Automatic construction equipment.

  According to one aspect of the present invention, it can be ensured that the pile material is fitted and inserted.

The structure of the steel sheet pile 1 press-fitted into the ground in the steel sheet pile press-in system of the first embodiment to which the present invention is applied is shown, (a) is a top view, and (b) is a side view. It is a side view which shows the state by which the some steel sheet pile 1 is fitted. It is a figure which shows the structure of the steel sheet pile press-fit system of 1st Embodiment to which this invention is applied. It is a flowchart which shows the press-fit construction procedure in the steel sheet pile press-fit system which concerns on 1st Embodiment to which this invention is applied. It is a block diagram which shows the functional structure of the construction state monitoring apparatus 300 in the steel sheet pile press-in system which concerns on 1st Embodiment to which this invention is applied. It is a figure which shows the relationship between the state of a radio signal, and the penetration length of the steel sheet pile 1 in the steel sheet pile press-in system which concerns on 1st Embodiment to which this invention is applied. It is a figure which shows the structure of the detection part 20b in the steel sheet pile press-in system of 2nd Embodiment to which this invention is applied. It is a figure which shows the state which the front joint part 16b and the back joint part 16a in the steel sheet pile press-in system which concerns on 3rd Embodiment to which this invention is applied are fitted, (a) is a top view, ( b) is a partially enlarged sectional view. It is a perspective view which shows the preceding pile material 1-1 and the subsequent pile material 1-2 which concern on a 1st modification. It is a partially expanded sectional view which shows the state which the front joint part and the back joint part have fitted in the steel sheet pile press-fit system which concerns on 5th Embodiment. It is a perspective view of the water stop material 30 which embed | buried the electric wire 3 provided in the front joint part shown in FIG. It is a side view which shows the construction state in the middle of the succeeding pile material 1-2 being fitted by the preceding pile material 1-1. It is a figure which shows the construction state following FIG. 12, Comprising: It is a side view which shows the state which the fitting of the subsequent pile material 1-2 with respect to the preceding pile material 1-1 was completed. It is a side view which shows the construction state in the middle of the subsequent pile material 1-2 being fitted by the preceding pile material 1-1 in the steel sheet pile press-in system which concerns on a 2nd modification, Comprising: It is a figure corresponding to FIG. .

  Hereinafter, a construction state monitoring method, a construction state monitoring device, and an automatic construction device to which the present invention is applied will be described with reference to the drawings. In the following embodiment, it will be described that the pile material is press-fitted, but this is not limited to this, and at least the succeeding pile that is subsequently placed in the ground in the state where the preceding pile material is previously placed in the ground. The present invention is applicable to a technique for inserting the subsequent pile material into the ground in a state where the joint of the material is fitted to the open joint of the preceding pile material. Both the preceding pile material and the subsequent pile material may be arranged in the ground by, for example, driving or embedding in addition to the press-fitting. In the case of driving pile material, there are vibration driving and driving by hammering. Further, in the embedding of the pile material, the pile material may be inserted into a portion excavated by excavating with an auger or the like in advance, or the auger or the like may be attached to the tip of the pile material and inserted while excavating. Further, these arrangement methods may be combined.

(First embodiment)
FIG. 1 shows a configuration of a steel sheet pile 1 that is press-fitted into the ground in the steel sheet pile press-fitting system according to the first embodiment to which the present invention is applied, wherein (a) is a top view and (b) is a side view. . In addition, in this embodiment, although the pile material press-fit is demonstrated as a U-shaped steel sheet pile (henceforth a steel sheet pile) 1, it is formed along the longitudinal direction of a pile material, and it fits with other adjacent pile materials. If the pile material has a joint that can be combined, for example, steel piles of other shapes such as Z-shaped steel sheet piles, zero sheet piles, linear steel sheet piles, steel pipe sheet piles, H-shaped steel sheet piles, May be pile materials of other forms such as pile materials of different materials.

  The steel sheet pile 1 has the web part 12, the flange part 14, and the coupling part 16, as shown to Fig.1 (a). When the web part 12 is performing the straight construction which installs the steel sheet pile 1 while moving the press-fit machine main body 100 mentioned later linearly, it is parallel to the advancing direction (X direction) of the press-fitting construction in the steel sheet pile press-fitting system. Then, it is gripped from both sides in the Y direction by the press-fitting machine body described later. The flange portion 14 is integrally connected to each of both end portions of the web portion 12. The pair of flange portions 14 are formed in a tapered shape that spreads outward (X direction) from the web portion 12. The pair of flange portions 14 have shapes that are symmetrical to each other from the approximate center position of the web portion 12. The joint portion 16 is integrally connected to each of the end portions of the flange portion 14. This joint part 16 is a joint that can be fitted to another pile material adjacent in the front and rear in the construction direction (the arrangement direction of the steel sheet piles 1).

  The pair of joint portions 16 are formed in a substantially U shape when viewed from the top. The pair of joint portions 16 are end portions on both sides in the width direction of the steel sheet pile 1, and are formed from the upper end to the lower end of the steel sheet pile 1 in the longitudinal direction. The pair of joint portions 16 are positioned so as to be fitted to the joint portions 16 of the other steel sheet piles 1 at the initial stage of the press-fitting construction, and the other steel sheet piles 1 are changed by the change in the positional relationship between the steel sheet piles 1 during the press-fitting construction. It contacts with the joint part 16. The joint part 16a on the −X direction side is on the opposite side of the press-fitting execution direction (X direction), and the joint part 16b on the + X direction side is on the press-fitting execution direction (X direction) side. Hereinafter, when the joint part 16a and the joint part 16b are not distinguished and described, they are simply referred to as “joint part 16”, and the joint part 16a that is the joint part on the rear side in the construction direction is referred to as “rear joint part 16a”. The joint portion 16b which is a joint portion on the front side in the construction direction is referred to as “front joint portion 16b”. The front joint part 16b and the rear joint part 16a are fitted to each other in the press-fitting work.

  In the front joint portion 16b of the steel sheet pile 1, a detection unit 20b is installed. The detection part 20b is installed in the position which can contact the subsequent joint of a succeeding pile material in the press fit construction which installs the some steel sheet pile 1 in the ground in the state which the preceding pile material and the succeeding pile material fitted. The detection part 20b is attached to the U-shaped inner wall of the front joint part 16b with an adhesive, for example.

The detection unit 20b is a transmission unit that transmits a radio signal in the first embodiment. The wireless signal is a signal transmitted and received without going through a medium such as a signal line, and includes various vibrations such as a radio wave, a magnetic wave, or a sound. In the present embodiment, an example in which the radio signal is a radio wave will be described. The detection unit 20b is driven by a built-in battery and transmits a radio wave. The built-in battery only needs to be able to drive the detection unit 20b over the construction period, and stores electric power for driving the detection unit 20b over, for example, two to three days. The detection unit 20 b is installed at a plurality of positions in the longitudinal direction of the joint unit 16. The radio wave transmitted by the detection unit 20b is received by a receiving unit described later. In addition, since there are many cases in which underground water intervenes in the earth and sand, it is preferable that the detection unit 20b has waterproof performance. The detection unit 20b may be a power source of a transmission coil attached to the steel sheet pile 1, and transmits a radio signal transmitted from the transmission coil to the reception coil (reception unit) using the steel sheet pile 1 as a signal transmission medium. It may be allowed.
Moreover, in 1st Embodiment, although the detection part 20b demonstrates what transmits a radio signal, the detection part 20b may be connected with the receiving part by the track | line with which the protective material was coat | covered.

  The detection unit 20b is covered with a protective material 22 for protecting the detection unit 20b. The protective material 22 is a material that protects the detection unit 20b when the steel sheet pile 1 is press-fitted into the ground, and is, for example, a foamed foam of urethane material. Thereby, the detection part 20b is protected from the underground obstacle when pressing the steel sheet pile 1 into the ground. Moreover, the protective material 22 is scraped off by fitting the joint part 16 of its own and the joint part 16 in the other steel sheet pile 1 and press-fitting the other steel sheet pile 1. Thereby, when the protective material 22 is press-fitted in a state where it is not fitted to another steel sheet pile 1, it protects the detection unit 20 b, and when it is press-fitted in a state fitted to another steel sheet pile 1. Then, the detection unit 20b and another steel sheet pile 1 are brought into contact with each other.

  FIG. 2 is a side view showing a state where a plurality of steel sheet piles 1 are fitted. In the joint (front joint part 16b-1) opened of the steel sheet pile (preceding pile material) 1-1, a plurality of detection units 20b-1, ..., detection unit 20b- in the longitudinal direction of the steel sheet pile 1-1. n is installed. The plurality of detection units 20b-1, ..., detection units 20b-n are provided at least at the pile tip (near the end on the -Z direction side) of the steel sheet pile 1-1. In the state where the preceding steel sheet pile 1-1 (preceding pile material) has been press-fitted into the ground, the subsequent steel sheet pile 1-2 (following pile material) has its rear joint portion 16a-2 connected to the steel sheet pile 1 -1 is positioned so as to be fitted to the front joint portion 16b-1. The subsequent steel sheet pile 1-2 is press-fitted into the ground while the fitting state between the rear joint portion 16a-2 and the front joint portion 16b-1 is normally maintained. Thereby, the some steel sheet pile 1-1 and the steel sheet pile 1-2 become a part of wall body constructed | assembled in the ground.

  The detection part 20b-1 installed in the front joint part 16b-1 of the steel sheet pile 1-1 is press-fitted with the rear joint part 16a-2 of the steel sheet pile 1-2 fitted to the front joint part 16b-1. And it contacts with the front joint part 16b-1 of the steel sheet pile 1-2, and is destroyed. Detection part 20b-1 transmits a radio wave until it is destroyed by front joint part 16b-1 of steel sheet pile 1-2, and according to having been destroyed by front joint part 16b-1 of steel sheet pile 1-2. Stop sending radio waves. Note that the term “destructed” as used herein means that the detection unit 20b is changed from a state capable of transmitting a radio wave to a state where transmission of the radio wave is stopped, and a radio wave received by a receiving unit described later is interrupted. Say.

  FIG. 3 is a diagram showing a configuration of a steel sheet pile press-fitting system according to the first embodiment to which the present invention is applied. The steel sheet pile press-fitting system includes a press-fitting machine main body 100 and a power unit (PU). The press machine main body 100 presses the steel sheet pile 1 into the ground. The power unit performs an operation in which the press-fitting machine body 100 applies power to press-fit the steel sheet pile 1 by hydraulic pressure. In addition, in embodiment, although the press machine main body 100 demonstrates what press-fits the steel sheet pile 1, it replaces with the press machine main body 100 in construction other than press fit, and is provided with the insertion machine which inserts a pile material in the ground.

  The press-fitting machine main body 100 has a construction state monitoring device 300 described later, and is an automatic construction device that automatically press-fits the steel sheet pile 1. The press-fitting machine body 100 includes a plurality of clamps 102, a saddle 104, a slide frame 106, a leader mast 108, a chuck 110, a chuck frame 112, and a main cylinder 114. The press-fitting machine main body 100 includes a penetration length measuring unit 120 and a construction state monitoring device 300.

  The plurality of clamps 102 are both sides in the Y direction of the web portion 12 from a pile top end to a predetermined height of a plurality of steel sheet piles 1 (previous pile material, hereinafter also referred to as completed pile 1R) press-fitted into the ground G in advance. Grab. By gripping the plurality of completed piles 1R by the plurality of clamps 102, a reaction force base for the press-fitting machine body 100 to press-fit the steel sheet pile 1 to the ground G is formed. The plurality of clamps 102 grip another completed pile 1R in the direction of the press-fitting work as the press-fitting work proceeds.

  The saddle 104 is connected to a plurality of clamps 102. The saddle 104 serves as a base for attaching the plurality of clamps 102 to the completed pile 1R.

  The slide frame 106 operates with respect to the saddle 104 in the direction in which press-fitting is performed and in the opposite direction. Thereby, the slide frame 106 positions the steel sheet pile 1 (following pile material, hereafter also referred to as the press-fit pile 1A) to be press-fit into the ground G by the press-fit machine main body 100 in the press-fitting construction progress direction and in the opposite direction. To work. More specifically, the slide frame 106 includes a completed pile (preceding pile material, hereinafter referred to as a completed pile 1B) in which the press-fitting construction is completed at an end portion in the progressing direction of press-fitting construction (an end portion in the + X direction) of the completed pile 1R. The position (both the X direction position and the Y direction position) of the rear joint part 16a of the press-fit pile 1A is determined so as to be fitted to the front joint part 16b.

  The leader mast 108 functions as a guide for moving the press-fit pile 1A in the vertical direction (Z direction). In addition, the leader mast 108 is moved in the press-fitting execution direction and in the opposite direction according to the operation of the slide frame 106. Inside the leader mast 108, the penetration length measuring unit 120 and the construction state monitoring device 300 are accommodated.

  The chuck 110 grips the web portion 12 of the press-fit pile 1A from both ends in the Y direction. The chuck frame 112 is disposed on the upper side (−Z direction side) of the chuck 110, and moves the chuck 110 in the vertical direction by the power given by the main cylinder 114.

  The main cylinder 114 is a hydraulic cylinder that generates power to move the press-fit pile 1A downward (+ Z direction) and press-fit the press-fit pile 1A into the ground G. The main cylinder 114 moves the press-fit pile 1A in the vertical direction according to the control of the power unit.

  Hereinafter, the press-fitting construction procedure in the steel sheet pile press-fitting system described above will be described. FIG. 4 is a flowchart showing a press-fitting procedure in the steel sheet pile press-fitting system according to the first embodiment to which the present invention is applied.

  First, the steel sheet pile press-in system press-fits the preceding pile material to the ground G on which other steel sheet piles 1 are not installed (step S100). Thereby, a steel sheet pile press-fit system installs the completed pile 1B. Next, the steel sheet pile press-fitting system fits the rear joint portion 16a of the press-fit pile 1A (following pile material) into the front joint portion 16b of the completed pile 1B, and press-fits the press-fit pile 1A into the ground G (step S102). The steel sheet pile press-in system performs a monitoring process of monitoring the construction state of the press-in pile 1A by the construction state monitoring device 300 while press-fitting the press-in pile 1A into the ground G (step S104).

  The construction state monitoring device 300 performs a monitoring process based on the radio wave transmitted by the detection unit 20b by the construction state monitoring device 300 during the press-fitting construction in step S102. The construction state monitoring apparatus 300 determines whether or not there is an abnormality in the construction state as a result of the monitoring process (step S106). When it is determined that there is an abnormality in the construction state, the construction state monitoring apparatus 300 displays the abnormality (step S108) and ends the process. Thereby, a steel sheet pile press-fitting system notifies the construction abnormality of the press-fitting pile 1A to a press-fitting construction manager or the like. If the construction state monitoring device 300 does not determine that the construction state is abnormal, the steel sheet pile press-in system determines whether or not all the steel sheet piles 1 have been press-fitted (step S110). The steel sheet pile press-in system ends the construction when it is determined that the press-fit of all the steel sheet piles 1 has been completed, and returns the process to step S102 when it is not determined that the press-fit of all the steel sheet piles 1 has been completed.

FIG. 5 is a block diagram showing a functional configuration of the construction state monitoring device 300 in the steel sheet pile press-fitting system according to the first embodiment to which the present invention is applied.
The construction state monitoring device 300 is connected to the penetration length measuring unit 120, the detecting unit 20b, and the display unit 320. The display unit 320 is a display device such as a liquid crystal display that displays the result of the monitoring process performed by the construction state monitoring device 300. The display unit 320 is visually recognized by an operator who manages the press-fitting work, for example. The display part 320 displays the image which shows that there exists abnormality in a construction state in step S108 mentioned above according to control of the display control part 310. FIG. Thereby, the construction state monitoring apparatus 300 can prompt the worker to deal with an abnormality in the construction state. The display control unit 310 drives and controls the display unit 320 based on the result of the monitoring process in the monitoring unit 308.

  The penetration length measuring unit 120 generates a signal indicating the penetration length of the press-fit pile 1A (hereinafter referred to as a penetration length signal) based on the operation of the main cylinder 114. The penetration length measuring unit 120 outputs a penetration length signal to the construction state monitoring device 300, for example, every predetermined time. The detection unit 20b includes a wireless transmission unit 200 configured by a wireless communication IC or the like. For example, the wireless transmission unit 200 transmits a radio wave every predetermined time. The wireless transmission unit 200 operates in accordance with a time-division method for transmitting a radio wave at a timing different from that of the other detection unit 20b, or a method for transmitting a radio wave including identification information different from that of the other detection unit 20b. The wireless transmission unit 200 may set an interval for transmitting the radio wave based on the accuracy of the penetration length determined by the transmission interval at which the radio transmission unit 200 transmits the radio wave and the press-fitting speed of the press-fit pile 1A. .

  The construction state monitoring device 300 is a computer including an input / output circuit, an arithmetic circuit, a control circuit, and a storage device. The construction state monitoring apparatus 300 includes a signal input unit 302, a wireless reception unit 304, a synchronization processing unit 306, a monitoring unit 308, and a display control unit 310.

  The wireless reception unit 304 receives the radio wave transmitted by the wireless transmission unit 200. The radio reception unit 304 outputs a radio signal subjected to predetermined signal processing to the signal input unit 302. The signal input unit 302 receives the penetration length signal output from the penetration length measurement unit 120 and the wireless signal output from the wireless reception unit 304.

  The synchronization processing unit 306 and the monitoring unit 308 may be software function units that function when a processor such as a CPU (Central Processing Unit) as an arithmetic circuit and a control circuit executes a program stored in a memory. A hardware function unit such as LSI (Large Scale Integration) or ASIC (Application Specific Integrated Circuit) may be used.

  The synchronization processing unit 306 synchronizes the penetration length signal and the radio signal. The synchronization processing unit 306 stores the penetration length signal and the radio signal synchronized with each other in the storage unit 312 based on the input timing of the penetration length signal and the input timing of the radio signal. FIG. 6 is a diagram showing the relationship between the state of radio waves and the penetration length of the steel sheet pile 1 in the steel sheet pile press-in system according to the first embodiment to which the present invention is applied.

  The storage unit 312 is realized by an HDD (Hard Disc Drive), a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), a ROM (Read Only Memory), a RAM (Random Access Memory), or the like. The storage unit 312 stores various programs such as firmware and application programs, setting information in each unit of the construction state monitoring apparatus 300, information on processing results, and the like.

  As shown in FIG. 6, information for monitoring the construction state of the press-fit pile 1 </ b> A and a monitoring result are stored in the storage unit 312. Information for monitoring the construction state of the press-in pile 1A was measured by at least the position where the detection unit 20b was installed, the time when the radio wave transmitted by the detection unit 20b was interrupted, and the penetration length measurement unit 120. It is information which shows a pair with penetration length.

  The synchronization processing unit 306 corresponds to the pile number, the position information T-1, ... Tn of the detection unit 20b, the time t1, ... tn when the radio wave is interrupted, and the radio wave is interrupted. A pair with the penetration length measured by the penetration length measurement unit 120 at the time is associated with and stored in the storage unit 312.

  The monitoring unit 308 press-fits the press-in pile 1A based on the position information of the detection unit 20b stored in the storage unit 312 and the penetration length measured by the penetration length measurement unit 120 at the time when the radio wave is interrupted. Monitor construction status. The monitoring unit 308 determines that the press-in pile 1A has passed the position (penetration length) where the detection unit 20b is installed at the time when the radio wave is interrupted. The monitoring unit 308 compares the penetration length measured by the penetration length measurement unit 120 at the time when the radio wave is interrupted with the attachment position of the detection unit 20b. When the penetration length measured by the penetration length measurement unit 120 and the attachment position of the detection unit 20b are within a predetermined range, the monitoring unit 308 confirms that there is no abnormality in the construction state. judge. In other words, the construction state monitoring device 300 indicates that there is an abnormality in the construction state when there is a match between the penetration length where the press machine main body 100 press-fits the press-fit pile 1A and the position of the press-fit pile 1A with respect to the completed pile 1B. Judge that there is no. When the penetration length measured by the penetration length measurement unit 120 and the attachment position of the detection unit 20b are not within a predetermined range, the monitoring unit 308 has an abnormality in the construction state. Determine.

  As explained above, according to the steel sheet pile press-fitting system according to the first embodiment to which the present invention is applied, the front joint portion 16b of the preceding pile material in the state where the completed pile 1B on which the detection unit 20b is installed is installed. And the rear joint portion 16a of the succeeding pile material are fitted and the press-fitted pile 1A is press-fitted, and it is monitored that the press-fitted pile 1A is fitted to the completed pile 1B based on the detection state of the detector 20b. Thereby, according to the steel sheet pile press-in system, it can be detected that the press-in pile 1A has passed the position of the detection unit 20b. As a result, according to the steel sheet pile press-fitting system, it can be guaranteed that the press-fitting pile 1A is fitted and press-fitted.

  Moreover, according to the steel sheet pile press-fitting system according to the first embodiment to which the present invention is applied, the rear joint portion 16a of the preceding pile material is located in front of the subsequent pile material based on the presence or absence of the radio wave transmitted by the detection unit 20b. It is monitored that the joint portion 16b is fitted. Thereby, according to the steel sheet pile press-in system, the press-in pile 1A is inserted into the detection unit 20b based on the disruption of the radio wave based on the fact that the press-in pile 1A passes the position of the detection unit 20b and the detection unit 20b is destroyed. It can detect passing through the position. As a result, according to the steel sheet pile press-fitting system, it can be guaranteed that the press-fitting pile 1A is fitted and press-fitted.

  Furthermore, according to the steel sheet pile press-in system according to the first embodiment to which the present invention is applied, the press-in pile 1A is based on the correspondence relationship between the penetration length measured by the penetration length measurement unit 120 and the detection state of the detection unit 20b. Is monitored to be fitted with the completed pile 1B. Thereby, according to the steel sheet pile press-in system, it is possible to monitor whether or not the penetration length of the press-fitting pile 1A into which the press-fitting machine body 100 has been press-fitted matches the penetration length through which the actual press-fitting pile 1A has passed. As a result, according to the steel sheet pile press-fitting system, it can be ensured with high accuracy that the press-fitting pile 1A is fitted and press-fitted.

(Second Embodiment)
Hereinafter, a steel sheet pile press-fitting system according to a second embodiment to which the present invention is applied will be described.
The second embodiment differs from the first embodiment in that it includes a detection unit 20b that detects the passage of the press-fit pile 1A with respect to the completed pile 1B.

  FIG. 7 is a diagram showing a configuration of the detection unit 20b in the steel sheet pile press-fitting system according to the second embodiment to which the present invention is applied. The detection unit 20b is an optical communication unit that performs communication using light as a medium. The detection unit 20b includes, as an optical communication unit, a light detection unit 210a attached to at least a front end portion of the front joint portion 16b-1, and a light output unit 210b attached to a front end portion of the rear joint portion 16a-2. Including. In the steel sheet pile 1 according to the second embodiment, the light detection part 210a is attached to the front joint part 16b-1 and the light output part 210b is attached to the rear joint part 16a-2, for example, by an adhesive. The light detection part 210a may be attached to a plurality of positions in the longitudinal direction in the front joint part 16b-1 including at least the pile tip in the steel sheet pile 1.

The light output unit 210b is an LED (light emitting) that outputs light at all times or every predetermined period.
diode). The light output part 210b is attached to the rear joint part 16a-2 in the steel sheet pile 1, and emits light toward the U-shaped inner wall. The light detection unit 210a includes a photodetector such as a photoelectric conversion circuit. The light detection part 210a is attached to the front joint part 16b-1 in the steel sheet pile 1. The light output part 210b is moved in the press-fitting direction with respect to the press-fitting pile 1A being press-fitted by the press-fitting machine body 100. The light detection part 210a and the light output part 210b are fitted with the rear joint part 16a-2 and the front joint part 16b-1 of the steel sheet pile 1, and the light detection part 210a and the light output part 210b have the same penetration length. In the positioned state, the light output surface of the light detection unit 210a and the light detection surface of the light output unit 210b are arranged to face each other. In order to suppress a decrease in detection performance when groundwater is present in the ground, it is preferable that the light detection section 210a and the light output section 210b have waterproof performance.

  The light detection unit 210a is connected to the wireless communication device 212, and transmits light as a radio wave indicating a light detection signal in response to detection of light output from the light output unit 210b. The wireless communication device 212 is installed in the steel sheet pile 1, for example, embedded in a recess of the steel sheet pile 1 and protected by a protective material. A radio wave indicating the light detection signal is received by the radio reception unit 304 of the construction state monitoring apparatus 300. The light detection unit 210a is connected to the transmission coil attached to the steel sheet pile 1 and the power source of the transmission coil, controls the power source based on the light detection signal, and transmits a radio signal from the transmission coil. May be transmitted to the reception coil (reception unit) as a signal transmission medium.

  The monitoring unit 308 determines the press-in pile 1A based on the position information of the light detection unit 210a stored in the storage unit 312 and the penetration length measured by the penetration length measurement unit 120 at the time when the light detection signal is received. Monitor the press-fit condition. The monitoring unit 308 determines that the press-fit pile 1A has passed the position (penetration length) where the light detection unit 210a is installed at the time when the light detection signal is received. The monitoring unit 308 compares the penetration length measured by the penetration length measurement unit 120 at the time when the light detection signal is received with the mounting position of the light detection unit 210a. When the penetration length measured by the penetration length measurement unit 120 and the mounting position of the light detection unit 210a are within a predetermined range, the monitoring unit 308 has no abnormality in the construction state. Determine. In other words, the construction state monitoring device 300 indicates that there is an abnormality in the construction state when there is a match between the penetration length where the press machine main body 100 press-fits the press-fit pile 1A and the position of the press-fit pile 1A with respect to the completed pile 1B. Judge that there is no.

  The steel sheet pile press-fitting system of the second embodiment monitors the construction state in which the press-fitting pile 1A is press-fitted based on the light detected by the light detection unit 210a. Specifically, the steel sheet pile press-in system can determine that the press-in pile 1A has passed based on the presence or absence of light or a change in the state of light. The presence / absence of light is determined when the light detection unit 210a does not exist in the light irradiation range by the light output unit 210b, and the light detection unit 210a does not detect the light, and the light detection unit 210a does not detect light by the light output unit 210b. Is detected by the monitoring unit 308 when the light is detected by the light detection unit 210a. When the light detection unit 210a is not present in the light irradiation range by the light output unit 210b, low light intensity is detected by the light detection unit 210a, and the light detection unit 210a is detected by the light output unit 210b. Is detected by the monitoring unit 308 by detecting high intensity light by the light detection unit 210a. The change in the light state is not limited to the intensity of light, but may be any change as long as the press-fit pile 1A is inserted into the ground while being fitted to the completed pile 1B.

  As described above, according to the steel sheet pile press-fitting system according to the second embodiment, the preceding pile material in which the light detection unit 210a is installed in the front joint portion 16b of the preceding pile material is press-fitted, and the rear joint portion of the preceding pile material The subsequent pile material having the light output unit 210b installed in 16a is press-fitted, and monitoring that the subsequent pile material is fitted with the preceding pile material based on the intensity of light detected by the light detection unit 210a. it can.

  In addition, although the steel sheet pile press-fitting system according to the second embodiment monitors that the subsequent pile material is fitted to the preceding pile material by the light detection unit 210a and the light output unit 210b, The light detection part 210a may be installed in the front joint part 16b-1, and the light output part 210b may be installed in the rear joint part 16a-2 of the subsequent pile material.

  Moreover, in the steel sheet pile press-in system according to the second embodiment, the light output part 210b may be attached to a plurality of positions in the longitudinal direction of the front joint part 16b-1 including at least the pile tip in the steel sheet pile 1. Good. Thereby, according to the steel sheet pile press-fitting system according to the second embodiment, the plurality of front joint portions 16b-1 are installed in the rear joint portion 16a-2 while the press-fitting pile 1A is gradually inserted into the ground. It can detect by the light detection part 210a, and can monitor the way in which the press-fit pile 1A is gradually inserted in the ground.

(Third embodiment)
Hereinafter, a steel sheet pile press-fitting system according to a third embodiment to which the present invention is applied will be described.
In the third embodiment, the configuration for detecting the passage of the press-fit pile 1A with respect to the completed pile 1B is the detection unit housed in the groove portion of the preceding pile material or the subsequent pile material, and the signal detected by the detection unit. A transmission line is used. FIG. 8A shows a state in which the preceding pile material 1-1 and the subsequent pile material 1-2 are fitted, and FIG. 8B is an enlarged view of a dotted line portion in FIG. And in the steel sheet pile press-in system which concerns on 3rd Embodiment, it is sectional drawing which shows the state which the front joint part 16b-1 and the back joint part 16a-2 are fitting.

  A groove 161 is formed at the tip of the front joint 16b-1 of the preceding pile material 1-1. The groove part 161 is formed so that the outer side becomes an opening from the concave part formed by the front joint part 16b-1. The groove 161 is formed from the top of the pile to the tip of the pile in the longitudinal direction of the steel sheet pile 1. In the rear joint portion 16a-2 of the subsequent pile material 1-2, a groove portion 162 is formed so that the inside of the concave portion formed by the front joint portion 16b-1 becomes an opening. The groove 162 is formed from the top of the pile to the tip of the pile in the longitudinal direction of the steel sheet pile 1. The groove part 161 and the groove part 162 are at least part of the opening part in a state in which the front joint part 16b-1 of the preceding pile material 1-1 and the rear joint part 16a-2 of the subsequent pile material 1-2 are fitted. Are arranged to face each other. It should be noted that the formation of the grooves 161 and 162 in the steel sheet pile 1 as in the present embodiment is a technique realized by, for example, J pocket pile (registered trademark, the same applies below) (http: //www.jfe -steel.co.jp/products/construction/items/jpocket-pile/index.html).

  In the groove 161 and the groove 162, a detection unit that detects the press-fitted pile 1A and a line that connects the detection unit and the construction state monitoring device 300 are installed. The detection unit and the line are covered with a protective material 22 for protecting the detection unit and the line.

  The detection unit is, for example, the optical communication unit described in the second embodiment described above. More specifically, in the groove portion 162 of the press-fit pile 1A (the subsequent pile material 1-2 in FIG. 8), a light detection unit 210a and a line that connects the light detection unit 210a and the construction state monitoring device 300 are installed. The The light detection part 210a may be attached to a plurality of positions in the longitudinal direction in the front joint part 16b including at least the pile tip in the steel sheet pile 1. On the other hand, in the groove part 161 of the preceding pile material 1-1, a line connecting the light output part 210b and the light output part 210b with the construction state monitoring device 300 is installed. The construction state monitoring device 300 controls the light output unit 210b to output light during the press-fitting of the press-fitting pile 1A, and a signal based on the light intensity detected by the light detection unit 210a is transmitted through the line. Is transmitted through. Thereby, the construction state monitoring apparatus 300 detects that the press-fit pile 1A is fitted and press-fitted with the completed pile 1B when the intensity of the light detected by the light detection unit 210a becomes a predetermined value or more. .

In addition, the protective material 22 may not be installed except for the portion where the detection unit is attached in the grooves 161 and 162, and the protective material 22 may be installed in a portion near the portion where the detection unit is attached, You may install the protective material 22 in all except the part to which the detection part was attached.
The protective material 22 may be any material as long as it is a material that protects the detection unit and the line. For example, an elastic body such as rubber, a foamed foam of urethane material, a steel material, an acrylic adhesive, or the like can be used.

(Fourth embodiment)
Hereinafter, a steel sheet pile press-fitting system according to a fourth embodiment to which the present invention is applied will be described.
In the fourth embodiment, a signal detected by the detection unit is transmitted into the steel sheet pile 1 and supplied to the construction state monitoring apparatus 300. In the steel sheet pile press-in system according to the fourth embodiment, a signal output unit (not shown) that transmits a signal detected by the detection unit 20b into the steel sheet pile 1 instead of the wireless transmission unit 200 and the wireless communication device 212 described above. ).

  For example, the signal output unit is connected to the detection unit via a line, converts the signal of the detection unit into a magnetic signal by a magnetic signal that is a magnetic wave, and transmits the magnetic signal using the steel sheet pile 1 as a medium. The signal output unit includes, for example, a transmission coil provided near the pile tip of the steel sheet pile 1 and a reception coil provided on the pile top end side from the pile tip of the steel sheet pile 1 and connected to the construction state monitoring device 300 by a signal line. Is provided. When the pile material is the steel sheet pile 1, the transmission coil is attached to the tip of the pile and is covered with a protective material. Further, when the pile material is a steel pipe, the transmission coil is wound around the outer peripheral surface of the steel pipe, for example, in the vicinity of the pile tip of the steel pipe, and the protective material is covered. For example, the protective material can protect the transmission coil in a state where the steel pipe is rotationally press-fitted. The signal output unit converts the signal of the detection unit by an oscillator and supplies the converted signal to the transmission coil to transmit the magnetic signal to the steel sheet pile 1. The magnetic signal transmitted to the steel sheet pile 1 is converted into an electric signal using electromagnetic induction in the receiving coil, and is received by the construction state monitoring apparatus 300 as an electric signal. The construction state monitoring apparatus 300 performs a reception process corresponding to the conversion process in the oscillator and receives a signal from the detection unit. The configuration for transmitting the magnetic signal to the steel sheet pile 1 is, for example, the technology described in “Transmission distance simulation in magnetic signal transmission system” (T.IEE Japan, Vol. 113-D, No. 12, '93). Can be realized by a known technique.

  Thereby, according to the steel sheet pile press-fitting system according to the fourth embodiment, as in the steel sheet pile press-fitting system according to the first embodiment, the interruption of the signal according to the detection unit 20b being destroyed is in the construction state. It can be detected by the monitoring device 300. Moreover, according to the steel sheet pile press-fitting system of the fourth embodiment, the construction state monitoring device 300 can detect an increase in light intensity as in the steel sheet pile press-fitting system according to the second embodiment. As a result, according to the steel sheet pile press-fitting system of the fourth embodiment, it is possible to monitor that the completed pile 1B and the press-fitted pile 1A are press-fitted while fitting, as in the above-described embodiment.

(First modification)
Although 1st-4th embodiment mentioned above demonstrated what a preceding pile material and a succeeding pile material were fitted by the joint parts 16, it is applicable also to the pile material of another form. FIG. 9 is a perspective view showing the preceding pile material 1-1 and the subsequent pile material 1-2 according to the first modification. The preceding pile material 1-1 and the subsequent pile material 1-2 are hot or cold-rolled steel, and the lengthwise dimension is formed from 5 meters to 20 meters, with a maximum of 50 meters. The preceding pile material 1-1 has a U-shaped cross-section, and the subsequent pile material 1-2 has a predetermined clearance (1 to 3 millimeters) with respect to the inner surface of the preceding pile material 1-1. So as to face each other.

  The preceding pile material 1-1 is provided with a plurality of detectors. The preceding pile material 1-1 includes a tip sensor that detects that the succeeding pile material 1-2 is press-fitted to the tip portion of the preceding pile material 1-1. In addition, the preceding pile material 1-1 may include an intermediate sensor that detects that the subsequent pile material 1-2 is press-fitted to the midway position of the preceding pile material 1-1.

(Fifth embodiment)
Hereinafter, a steel sheet pile press-fitting system according to a fifth embodiment to which the present invention is applied will be described.
In the fifth embodiment, as shown in FIGS. 10 and 11, the joint (front joint portion 16 b-1) of the steel sheet pile (preceding pile material 1-1) has an opening of the preceding pile material 1-1. The water stop material 30 extended over the full length of a longitudinal direction is provided, and the electric wire 3 (detection part) is embed | buried in this water stop material 30 along a longitudinal direction. The water blocking material 30 has a lower end 30b on the side where the joint (rear joint part 16a-2) of the subsequent pile material 1-2 that is fitted to the front joint part 16b-1 of the preceding pile material 1-1 is disposed (that is, The convex part 31 which protrudes with the electric wire 3 is provided toward the rear joint part 16a-2 of the subsequent pile material 1-2 in the front joint part 16b-1 of the preceding pile material 1-1. . The water stop material 30 is affixed on the inner surface of the front joint portion 16b-1 of the preceding pile material 1-1 by, for example, a double-sided tape or an adhesive. As the water-stopping material 30, for example, a water-stopping material made of water-expandable rubber, which is a composite material of a superabsorbent polymer and rubber, as described in JP 2010-112054 can be used. In addition, the convex part 31 of the water stop material 30 may be integrally provided with respect to the part extended in the longitudinal direction of the water stop material 30, and a different body may be sufficient as it. In the case of a separate body, it may be formed from a member different from the water blocking material 30.

  The electric wire 3 extends from one end (upper end 30a) to the other end (lower end 30b) of the water stopping material 30 and is folded back within the convex portion 31 of the lower end 30b toward the upper end 30a. It is buried so as to return, and both end portions 3 b and 3 b of the electric wire 3 protrude from the upper end 30 a of the water blocking material 30. Thus, since the lower folded portion 3a (convex portion) on the lower side of the electric wire 3 is embedded in the convex portion 31, this folded portion 3a is also a joint (rear joint portion 16a-) of the subsequent pile material 1-2. 2) will protrude toward the side where it is arranged. Both ends 3b and 3b of the electric wire 3 are connected so as to form a series circuit via a power source (not shown) and an energization display 32 such as a light bulb or a rotating lamp. In the energization display part 32, when the above-mentioned circuit is normal, the energization state of the electric wire 3, that is, the detection state is displayed by lighting the light bulb or the rotating lamp. That is, when a part of the electric wire 3 is disconnected, a non-energized state (non-detected state) is entered, and the energized display disappears when the light bulb or the rotating lamp is turned off in the energized display unit 32.

  In addition, the lower end of the front joint part 16b-1 of the preceding pile material 1-1 provided with the water blocking material 30 may be protected by a cover body or the like that covers the convex part 31. As such a cover body, the lower end part (convex part 31) of the water stop material 30 is protected to the extent that it does not break due to the tip resistance of the soil or the peripheral surface friction when the preceding pile material 1-1 is placed, and the subsequent pile The protrusion 31 is set to be broken by the insertion of the material 1-2.

12 and 13 show a construction state in which the subsequent pile material 1-2 is fitted to the preceding pile material 1-1 when the joint portion shown in FIG. 10 is viewed from the upper side of the drawing.
In the steel sheet pile press-fitting system of the fifth embodiment, as shown in FIGS. 12 and 13, with respect to the front joint portion 16 b-1 of the preceding pile material 1-1 including the water blocking material 30 in which the electric wire 3 is embedded. Then, the rear joint portion 16a-2 of the subsequent pile material 1-2 is inserted from above while being fitted. Since the electric wire 3 in the water stop material 30 is normal without being cut at the time of insertion at this time, the electric wire 3 is in an energized state, and by confirming that the light bulb or the rotating lamp is turned on in the energization display unit 32 It is possible to monitor the insertion by normal fitting. And the lower end of the subsequent pile material 1-2 is driven to the placement completion position which corresponds to the depth of the lower end of the preceding pile material 1-1, and the joint of the preceding pile material 1-1 and the subsequent pile material 1-2 Is normally fitted, the lower end of the succeeding pile material 1-2 inserted downwards into the convex portion 31 of the water blocking material 30 so that the convex portion 31 is broken. Since the folded portion 3 a of the electric wire 3 is embedded in the convex portion 31, when the convex portion 31 is broken, the electric wire 3 is also cut at the folded portion 3 a to be in a non-energized state (non-detected state), and the energized display portion 32. When the light bulb or revolving light is turned off, the energization display disappears. That is, the energization state of the electric wire 3 is monitored by the energization display unit 32 and the non-energized state is confirmed, so that the succeeding pile material 1-2 is inserted while being normally fitted between the joints. It can be confirmed that the lower end of 1 has been reached.
In addition, since the convex part 31 should just cut | disconnect the electric wire 3 (folding part 3a) in the convex part 31, in the state cut | disconnected from the main-body part of the water stop material 30 by the collision of the subsequent pile material 1-2. It need not be broken.

(Second modification)
In addition, although it is set as the structure which provides the water stop material 30 in the preceding pile material 1-1 in 5th Embodiment, it is not limited to this. For example, like the 2nd modification shown in FIG. 14, the water stop material 30 which does not have the convex part 31 (refer FIG. 12) as mentioned above is provided in the back joint part 16a-2 of the subsequent pile material 1-2. It may be a configuration. The electric wire 3 of the second modified example extends from one end (upper end 30a) of the water-stopping material 30 toward the other end (lower end 30b) that does not have a convex portion, and further within the lower-end 30b. It is buried so as to return and return to the upper end 30a side. Moreover, in the 2nd modification, the back joint part 16a-2 of the subsequent pile material 1-2 is arrange | positioned at the lower end part of the front joint part 16b-1 of the preceding pile material 1-1 at the time of fitting (namely ,. A projecting blade portion 33 projecting toward the rear joint portion 16a-2 of the subsequent pile material 1-2 in the front joint portion 16b-1 of the preceding pile material 1-1 is provided.
Also in this case, similarly to the fifth embodiment described above, the lower end of the subsequent pile material 1-2 is driven to the driving completion position that matches the depth of the lower end of the preceding pile material 1-1, and the previous pile material 1 -When the joint of 1 and the subsequent pile material 1-2 is normally fitted, the folding | returning part 3c of the lower end of the electric wire 3 in the water stop material 30 is cut | disconnected by contacting the protrusion blade part 33, and it is a non-energized state (Non-detection state), which can be confirmed by the above-described energization display unit 32.

  In the fifth embodiment and the second modification described above, the example in which the electric wire 3 is embedded in the water stop material 30 has been described. However, the configuration is not limited to the configuration in which the electric wire is embedded in the water stop material. . For example, in the case where the joint portion has a pocket portion (groove portion) where a pipe or the like can be installed, such as the J pocket pile described above, only the electric wire is provided along the longitudinal direction of the joint of the preceding pile material. It is also possible to do. Furthermore, when only the electric wire is provided, the electric wire is protected by a protective material (for example, a resin pipe) that can be broken by the collision of the subsequent pile material. It is good also as a structure which prevents the cutting | disconnection of the electric wire in insertion.

(Third Modification)
In each embodiment described above, in the construction in which the pile material is fitted and inserted to ensure that the pile material is inserted into the ground continuously in a predetermined construction direction, Give an example of fitting between the joint on the front side in the construction direction of the preceding pile material arranged in the ground in advance and the joint on the rear side in the construction direction of the subsequent pile material placed in the ground Although demonstrated, it is not limited to such a fitting, What is necessary is just a fitting with the coupling | joint with which the opening of the preceding pile material and the coupling | joint of the subsequent pile material in the construction of a some pile material. For example, fitting of pile material and reinforcement material in construction where a reinforcement material is arranged along the longitudinal direction of the pile material against a wall body that is continuously pressed into the ground. The present invention can also be applied to.

Hereinafter, the specific example about the steel sheet pile press-fit system which concerns on the 3rd modification to which this invention is applied is demonstrated.
The web portion of the steel sheet pile is provided with a side joint portion that protrudes in the orthogonal direction from the outer surface of the web portion and is formed from the upper end to the lower end in the longitudinal direction of the steel sheet pile. The reinforcing material is made of, for example, a steel pipe provided with a joint portion formed on the outer peripheral surface from the upper end to the lower end in the longitudinal direction. Or a reinforcing material consists of an H-shaped steel sheet pile in which the joint part formed from the upper end of a longitudinal direction to a lower end was provided in the outer surface of one flange, for example. As a construction state monitoring method in this case, the reinforcing material (following) is arranged in the ground subsequent to the opened side joint portion of the steel sheet pile (leading pile material) arranged in the ground in advance. The joint part of the pile material) is fitted, and the reinforcing material is inserted into the ground. At this time, while inserting the reinforcing material, the joint portion of the reinforcing material is a side joint of the steel sheet pile based on the detection state of the detection unit installed on the steel sheet pile or the reinforcing material and the presence or absence of a signal transmitted by the detection unit. It can be monitored by using the construction state monitoring device described above that it is inserted while being fitted to the part.

  Although each embodiment mentioned above gave and demonstrated the example in which the presser main body 100 of a steel sheet pile press-fit system has the construction state monitoring apparatus 300, the function of the construction state monitoring apparatus 300 is a computer independent of the presser machine main body. You may make it implement | achieve. For example, the construction state monitoring apparatus 300 may be realized by a computer of a terminal held by an administrator who manages construction for installing the steel sheet pile 1. In that case, a program for realizing this function may be recorded on a computer-readable recording medium, and the program recorded on the recording medium may be read into a computer system and executed. Here, the “computer system” includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory inside a computer system serving as a server or a client in that case may be included and a program that holds a program for a certain period of time. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  Moreover, although each embodiment mentioned above gave and demonstrated the example in which the penetration length measurement part was installed in the insertion machine which inserts a pile material, an penetration length measurement part is an insertion machine which inserts a pile material It may not be installed in. For example, it may be realized by a wire type stroke sensor installed on the ground. In this case, the penetration length can be measured based on a change in the amount of wire fed in the stroke sensor accompanying the insertion of the pile material by connecting the wire to the pile material to be inserted into the ground.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Steel sheet pile 1-1 Prior pile material 1-2 Successive pile material 1A Press-in pile 1B Completed pile 1R Completed pile 3 Electric wire (detection part)
3a Folded part (convex part)
3b Both ends 3c Folded part 16 Joint part 16a Rear joint part 16b Front joint part 161, 162 Groove part 20b Detection part 22 Protective material 30 Water stop material 30a Upper end (one end)
30b Lower end (other end)
31 convex part 32 energization display part 33 protruding blade part 100 press-fitting machine main body 120 penetration length measuring part 200 wireless transmission part 210a light detection part 210b light output part 212 wireless communication device 300 construction state monitoring device 302 signal input part 304 wireless reception part 306 Synchronization processing unit 308 Monitoring unit 310 Display control unit 312 Storage unit 320 Display unit

Claims (17)

It is a construction state monitoring method for monitoring the construction state of a plurality of pile materials by fitting the pile materials to each other by a joint formed along the longitudinal direction of the pile materials,
A first step of placing the preceding pile in the ground;
The subsequent pile material is inserted into the ground by fitting the joint of the subsequent pile material that is subsequently placed in the ground to the open joint of the preceding pile material that is previously placed in the ground. The second step to
While inserting the subsequent pile material in the second step, the joint of the subsequent pile material is released from the preceding pile material based on the detection state of the detection unit installed in the preceding pile material or the subsequent pile material. A third step of monitoring the insertion while mating with the joint,
A construction state monitoring method. It is a construction state monitoring method for monitoring the construction state of a plurality of pile materials by fitting the pile materials to each other by a joint formed along the longitudinal direction of the pile materials,
A first step of placing a preceding pile material having a detector in the joint to be opened in the ground;
The subsequent pile material is inserted into the ground by fitting the joint of the subsequent pile material that is subsequently placed in the ground to the open joint of the preceding pile material that is previously placed in the ground. The second step to
While inserting the succeeding pile material in the second step, the fitting of the succeeding pile material is inserted while fitting with the opened joint of the preceding pile material based on the presence or absence of a signal transmitted by the detection unit. A third step to monitor what is being done,
A construction state monitoring method. In the joint where the preceding pile material is opened, an electric wire extending over the entire length in the longitudinal direction of the pile material is provided as the detection unit,
The third step monitors that the joint of the subsequent pile material is inserted while fitting with the joint of the preceding pile material opened based on the energized state of the electric wire,
The construction state monitoring method according to claim 1 or 2. At the lower end of the electric wire, a convex portion protruding into the fitting region of the joint of the subsequent pile material in the joint opened of the preceding pile material is formed,
In the third step, the convex portion of the electric wire is cut when the lower end of the subsequent pile material inserted while fitting into the preceding pile material collides directly or indirectly with the convex portion. By being switched from the energized state to the non-energized state, it is monitored that the joint of the subsequent pile material is inserted while fitting with the joint of the preceding pile material opened,
The construction state monitoring method according to claim 3. In the joint of the subsequent pile material that fits into the joint that has been opened in the preceding pile material, an electric wire that extends over the entire length in the longitudinal direction of the pile material is provided as the detection unit,
The third step monitors that the joint of the subsequent pile material is inserted while fitting with the joint of the preceding pile material opened based on the energized state of the electric wire,
The construction state monitoring method according to claim 1. The preceding pile material has a protruding blade portion that protrudes into a fitting region of the joint of the subsequent pile material in the joint opened of the preceding pile material at the lower end of the opened joint,
In the third step, when the electric wire provided in the subsequent pile material inserted while being fitted to the preceding pile material comes into contact with the protruding blade portion, the electric wire is cut and de-energized from the energized state. By being in a state, it is monitored that the joint of the succeeding pile material is inserted while fitting with the joint that has been opened of the preceding pile material,
The construction state monitoring method according to claim 5.   The construction state monitoring method according to any one of claims 3 to 6, wherein the electric wire is embedded in a water stop material provided in the joint. The detector has a transmitter.
The third step monitors that the joint of the subsequent pile material is inserted while fitting with the joint opened of the preceding pile material based on the wireless signal transmitted by the detection unit,
The construction state monitoring method according to claim 1 or 2. The first step arranges the preceding pile material having a first optical communication unit installed in a joint opened as the detection unit,
The second step arranges the subsequent pile material having a second optical communication unit installed in a joint of the subsequent pile material,
In the third step, based on the light detected by the first optical communication unit or the second optical communication unit, the joint of the subsequent pile material is engaged with the joint of the preceding pile material opened. While monitoring the insertion,
The construction state monitoring method according to claim 1 or 8. The preceding pile material or the subsequent pile material has a groove portion in which a line for transmitting a signal detected by the detection portion and the detection portion is accommodated,
The third step monitors that the joint of the subsequent pile material is inserted while fitting with the joint of the preceding pile material opened based on the signal transmitted to the line.
The construction state monitoring method according to any one of claims 1, 2, 8, and 9. In the third step, the joint of the subsequent pile material is fitted with the joint of the preceding pile material released based on the signal output from the detection unit and transmitted in the preceding pile material or the subsequent pile material. To monitor that it is inserted
The construction state monitoring method according to any one of claims 1, 2, 8 to 10. In the third step, the joint of the subsequent pile material is fitted with the joint of the preceding pile material released based on the correspondence relationship between the penetration length measured by the penetration length measuring unit and the detection state of the detection unit. While monitoring the insertion,
The construction state monitoring method according to any one of claims 1 to 11. In the first step or the second step, the preceding pile material or the subsequent pile material is arranged in a state where the detection unit is protected by a protective material.
The construction state monitoring method according to any one of claims 1 to 12. In the first step or the second step, the preceding pile material or the subsequent pile material including the detection unit driven by a built-in battery is disposed.
The construction state monitoring method according to any one of claims 1, 2, 8 to 13.   The construction state monitoring method according to any one of claims 1 to 14, wherein in the first step and the second step, a steel sheet pile is disposed as the pile material. In the middle of inserting the succeeding pile material by fitting the joint of the succeeding pile material subsequently disposed in the ground to the open joint of the preceding pile material previously disposed in the ground A signal input unit to which a signal output by a detection unit installed in the preceding pile material or the subsequent pile material is input;
Based on a detection state based on a signal input to the signal input unit, a monitoring unit that monitors that the joint of the succeeding pile material is inserted while being fitted to the joint that is opened of the preceding pile material; ,
Construction status monitoring device having In the middle of inserting the succeeding pile material by fitting the joint of the succeeding pile material subsequently disposed in the ground to the open joint of the preceding pile material previously disposed in the ground A signal input unit to which a signal output by a detection unit installed in the preceding pile material or the subsequent pile material is input;
Based on a detection state based on a signal input to the signal input unit, a monitoring unit that monitors that the joint of the succeeding pile material is inserted while being fitted to the joint that is opened of the preceding pile material; ,
Automatic construction equipment equipped with construction status monitoring equipment.

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