JP2009221662A - Excavation data management system for all-casing construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a management system which acquires and records excavation data on ground press-in excavation of a casing tube by an all-casing construction method (for a cast-in-place pile) performed by hydraulically-operated excavation. <P>SOLUTION: This management system includes: a linear encoder (depth sensor 11) which detects the excavation progress of a tube grip portion of excavation equipment; a hydraulic sensor 12 which detects a hydraulic value supplied to a hydraulic mechanism pushing in the tube; an input instruction means for the start, suspension, restart and completion of operations, or the start of the next pile excavation; and a data processing means 31 which records and processes the detection data of the linear encoder and the hydraulic sensor in a continuous manner or at predetermined time intervals by the input of instructions on the start of the operations, which suspends recording processing by the input of instructions on the suspension of the operations, which continuously performs the recording processing before the suspension by the input of instructions on the restart of the operations, and which records the conditions of casing excavation for each cast-in-place pile. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an excavation data management system for ground press-fitting excavation of a casing tube by an all-casing method (cast-in-place pile) performed in hydraulic drive excavation.

  When constructing cast-in-place piles by the all-casing construction method, perform a predetermined design after conducting a ground boring survey in advance, and perform construction based on the design. The casing is dimensioned and photographed, and the casing remaining scale after excavation is also photographed and recorded, leaving a record of the construction entity of the drilling hole.

  In addition, as a confirmation work at the time of construction, visual measurement is performed by lowering the measuring tape to the bottom of the hole, and excavation ground is obtained by sampling and visual inspection.

  In other drilling methods (auger excavation methods), various means for grasping the excavation status (depth, ground status) have been proposed. For example, in Patent Document 1 (Japanese Utility Model Publication No. 63-76043), a detection rope is tied to an earth auger body mounted on a leader mast, and by detecting a feeding winding length and a feeding winding speed of the detection rope, It has been shown to detect the depth and speed of an earth auger excavator.

  Patent Document 2 (Japanese Patent Laid-Open No. 5-287721) detects the current value during excavation of an auger drive motor that drives an auger of an excavator that drills the ground, and also moves the auger in the vertical direction ( A method of detecting a pile support layer (hard ground) of the excavation hole by detecting N depth data obtained by boring investigation in advance and comparing the detected value data with a borehole survey is disclosed.

  Further, Patent Document 3 (Japanese Patent Laid-Open No. 2001-73361) describes various construction data detection data determined in accordance with the construction means of the foundation construction machine (in the case of construction of cast-in-place piles, suspension load data of equipment, Means for calculating, recording, and displaying descending speed detection data, auger current data or auger pressure data for detecting excavation loads, and cement milk flow rate detection data) is disclosed.

  Furthermore, in Patent Document 4 (Japanese Patent Laid-Open No. 2004-250956), in a construction management system for measuring excavation depth by integrating the number of rotations of an auger lifting / lowering motor, the correction of the integration at the time of gripping the work rod is rotationally driven. Means for obtaining a difference between a movement distance from a position at which the work rod is started to be gripped in the apparatus to a position at which the work is resumed after the gripping is disclosed.

Japanese Utility Model Publication No. 63-76043. JP-A-5-287721. JP 2001-73361 A. Japanese Patent Application Laid-Open No. 2004-250956.

  As mentioned above, in the construction of cast-in-place piles by the all-casing method, the results of the boring survey in the construction area remain, but the exact construction status of each pile (whether it was constructed as designed or there was no problem in construction as designed) ()) Is not necessarily accurately recorded, and these matters cannot be confirmed after the construction of the superior.

  On the other hand, as described above, various construction management for auger excavation construction (ascertainment of excavation status) has been proposed, but construction data management for auger excavation work is the load state of the drive motor that is the operating source of each operating member. It is based on (driving current value) and operation integration (rotation speed integration), and cannot be applied as it is to an all-casing method that mainly performs hydraulic operation.

  Therefore, the present invention proposes a construction data management system suitable for the all casing method.

  The excavation data management system in the all-casing method according to the present invention uses an excavator that holds a casing tube and pushes it in by rotation, swinging, etc., excavating and discharging earth and sand in the casing tube, and constructing a cast-in-place pile In the construction method, a linear encoder that detects the progress of excavation at the tube gripping part of the excavator, a hydraulic sensor that detects the hydraulic value supplied to the hydraulic mechanism that pushes the tube, and the work start, interruption, restart, end or next pile An excavation start input instruction means is provided, and the detection data of the linear encoder and the hydraulic sensor is recorded continuously or at predetermined time intervals when the operation start instruction is input, and the recording process is interrupted when the operation interruption instruction is input, and a restart instruction is issued. The recording process is continuously performed before interruption by the input, and the casing excavation state for each pile of the cast-in-place pile Those characterized by comprising a data processing means comprising a record of.

  Thus, when constructing a cast-in-place pile to the designed depth, the depth during operation (detected value of the linear encoder) and the driving torque (hydraulic value) of the hydraulic device that pushes the tube in are simultaneously detected and recorded. In addition, when the tube is added during the work, the recording of the detected value is stopped by the interruption instruction input, and the detection value is recorded and displayed continuously by the resumption instruction input. .

  Therefore, as the excavation depth progresses, it is possible to know the excavation resistance at the depth, that is, the ground condition, from the detected value of the drive hydraulic pressure at the depth, and the construction of the cast-in-place pile by recording each pile one by one The situation can be easily confirmed at a later date, and even during work, the work will be performed while checking the construction status based on the design determined in the boring survey and the ground condition change due to the difference in the piled location, so the design value and the actual If it is determined that the situation is different, it is possible to take a further stakeout such as stakeout.

  According to the present invention (Claim 2), in the excavation data management system, the excavator is provided with a chuck sensor that detects whether or not the tube is gripped, and the gripping of the tube is not detected after a predetermined time has elapsed after the chuck is released. And a data processing means for determining that the operation is interrupted and erasing the detection data after the chuck is released from the record.

  Thus, even when no interruption instruction is input when the casing tube is added, the gripping of the casing tube is released when the casing tube is added, so that the release is detected and the release state continues for a certain period of time. If it is determined that the casing tube has not been directly related to the excavation work, and the record that has been determined as the casing tube addition work is deleted, the continuity of the construction record is ensured even if the interrupt instruction is forgotten. It can be done.

  The construction of the present invention is as described above, and in the construction of cast-in-place piles by the all-casing method, the excavation status of the casing tube (the construction of the pile and the relationship between the depth of the ground and the excavation resistance) is detected and recorded. The construction status and ground status of each pile can be confirmed, and the excavation status (ground strength confirmation) can be grasped as the construction progresses. It is.

  Next, an embodiment of the present invention will be described. An excavation apparatus that is a subject of the present invention includes a gripping mechanism that grips a casing tube, and a press-fitting hydraulic mechanism that is pushed into the ground while rotating or swinging the casing tube. The recording device is attached.

  The recording apparatus includes a detection unit 1, an operation input unit 2, and a processing unit 3 that processes, records, and displays predetermined data.

  The detection means 1 includes a depth sensor 11 and a pressure sensor 12, and the depth sensor 11 employs a linear encoder to detect the excavation travel distance of the casing tube gripping portion of the excavator. The pressure sensor 12 detects the hydraulic oil supply pressure from the hydraulic pump mounted on the excavator to the press-fitting hydraulic mechanism, and is provided in the hydraulic oil supply path.

  The operation input means 2 includes an operation switch 21 and a chuck sensor 22. The operation switch 21 includes a work start switch, a work interruption switch, and a work resumption switch (for example, after a work interruption detection or work interruption switch input). It is not necessary to install a program that recognizes work start switch input as work restart), work end switch (not particularly required when resetting by pile number input at the start of work). It may be provided on an operation panel provided in the excavator, or an input switch (keyboard) of a personal computer serving as the processing unit 3 may be employed.

  The chuck sensor 22 is a micro switch that detects whether the casing tube is gripped by a gripping mechanism that grips the casing tube.

  The processing unit 3 is composed of a general personal computer, and includes a predetermined program (data processing unit 31), a recording unit 32 on a predetermined recording medium (data recording unit such as a DVD), and a data display unit (for example, a liquid crystal display). Display: TFT) 33 is provided.

  Thus, at the start of excavation work, the construction work and the pile number of the excavation work are input to the personal computer, the work start switch is turned on (work start instruction signal input), and the recording device is operated.

  When the casing tube push-in operation is started and the casing tube is pushed into the ground, the depth is detected by the linear encoder, and simultaneously the hydraulic oil pressure to the press-fitting hydraulic mechanism at that time is simultaneously detected. The detected value is recorded in the data recording means 32 and displayed on the display unit 33.

  In addition, the casing tube requires an extension, and when the extension work is performed, the operation interruption switch is turned on (interruption signal) so that the excavation does not proceed and is not interpreted as an increase in excavation resistance. Input) and stop the recording process. When the addition work is finished, the work resumption switch is turned on (work resumption signal input) to resume detection data acquisition. When predetermined excavation is finished, detection data acquisition is finished with a work end instruction signal input. This detection data is recorded (downloaded to a DVD or the like) in all the piles.

  Further, even when the work interruption switch is not turned on during the addition work, the gripping of the casing tube is once released during the addition work of the casing tube, so this release is detected and a detection signal is sent to the processing unit 3 for a certain period of time. If the release state continues, it is determined that the casing tube is not connected with the progress of excavation, and the detection data after the release of the gripping of the casing tube is deleted. Therefore, even if the user forgets to input the interruption instruction, the continuity of the construction record can be secured.

  The data thus detected and recorded is recorded in all the piles, and the hydraulic pressure value in the recorded data corresponds to the excavation resistance, the excavation depth, the excavation resistance at that time, and further the excavation progress. From the speed (obtained from the relationship with the time when the excavation depth is recorded), etc., it is possible to reliably and easily confirm the ground condition in which the cast-in-place pile is constructed and the pile-dried depth.

  Further, during the excavation, since the excavation depth and excavation resistance can be known by the display unit 33, if it is determined that there is a problem in the construction as designed, the correction can be easily performed.

1 is a simple block diagram of a recording apparatus according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Detection means 11 Depth sensor 12 Pressure sensor 2 Action input means 21 Operation switch 22 Chuck sensor 3 Processing part 31 Data processing means 32 Recording means 33 Display part

Claims (2)

  Using an excavator that holds the casing tube and pushes it by rotation, swinging, etc., excavating and excavating the tube holding part of the excavator in an all-casing construction method that excavates and removes the earth and sand in the casing tube and constructs a cast-in-place pile A linear encoder for detecting the pressure, a hydraulic pressure sensor for detecting a hydraulic pressure value supplied to a hydraulic mechanism for pushing the casing tube, and an input instruction means for starting, interrupting, resuming, ending or starting the next pile excavation, and starting the work The detection data of the linear encoder and hydraulic sensor are recorded continuously or at predetermined time intervals by the instruction input, the recording process is interrupted by the operation interruption instruction input, and the recording process is continuously processed before the interruption by the restart instruction input. And a data processing means for recording the casing excavation situation for each pile of the cast-in-place pile. Drilling data management system in all casing method.   The excavator is equipped with a chuck sensor that detects whether or not the casing tube is gripped. If the casing tube holding is not detected after a lapse of time after releasing the chuck, it is determined that the operation has been interrupted, and the detection data after releasing the chuck is deleted from the record. The excavation data management system in the all-casing method according to claim 1, further comprising: a data processing unit that performs the processing.

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