JP2010084457A - Support system for placing sheet pile - Google Patents

Abstract

[PROBLEMS] To prevent a new sheet pile from being placed next to an existing sheet pile in a state where the joint portions are fitted to each other and interfering with adjacent sheet piles. A sheet pile placing support system that can be placed at a predetermined position with high accuracy is provided.
A steel sheet pile calculated by an arithmetic unit based on detection data of an automatic tracking light wave range finder 1 that detects reflected light from one reflector 4 attached to the upper end of a new steel sheet pile 12c. Based on the comparison between the two-dimensional plane coordinates of the reference point 12c and the two-dimensional plane coordinates stored in the calculation device of the reference point of the existing steel sheet pile 12b adjacent to the steel sheet pile 12c, the two-dimensional plane of the steel sheet pile 12c. The index data of the target placement position is calculated in real time, and this index data is displayed in real time on a monitor disposed in the operator room 7 of the crane 6 in which the vibrator hammer 8 is suspended.
[Selection] Figure 2

Description

  The present invention relates to a sheet pile placing support system, and more specifically, when a new sheet pile is sequentially placed next to an existing sheet pile by fitting the joint portions to each other, it interferes with an adjacent existing sheet pile. The present invention relates to a sheet pile placing support system that prevents the sheet from being placed at a predetermined position and that can be placed at a predetermined position with high accuracy.

  Sheet piles such as steel sheet piles are used in various constructions including harbors, river civil engineering, and construction work. When placing sheet piles, place a conductive material in the placement area in advance and place the sheet pile to be placed along the conductive material so that the joints of adjacent sheet piles fit together. . At this time, conventionally, the guider uses a transit or the like to transmit the deviation between the position of the sheet pile to be newly placed and the target position to the operator of the crane in which the placing machine is suspended by radio etc. Based on this information, a new sheet pile to be placed was positioned. Therefore, the positioning accuracy of the sheet pile to be placed is greatly affected by the skills of the guide and the operator, and there is a problem that it is difficult to place the sheet pile at a predetermined position with high accuracy.

  On the other hand, not only a sheet pile but also a pile driving construction management device used when driving a pile and a method for observing the position of a cylindrical pile have been proposed (see Patent Documents 1 and 2). The device of Patent Literature 1 focuses only on a pile to be newly placed, manages the penetration amount and supporting force of the pile, and does not manage the position on a plane. Moreover, although the method of patent document 2 observes the position in the plane of the pile to lay, it is still paying attention only to the pile to newly lay, and the present position of the pile to lay and The target position set in advance is displayed on the monitor.

  In the first place, the pile is different from the sheet pile, so each is an independent structure (independent structure), so even if the position where one pile is placed slightly deviates from the target position, It does not affect the placement position of piles to be installed. On the other hand, since the sheet pile is a structure (continuous structure) configured by connecting a plurality of sheets, even if the placement position of any one sheet pile is slightly deviated from the target position, the deviation is placed later. Accumulated at the placement position of the sheet pile, adverse effects occur.

The proposal in the above document is an invention related to pile driving, unlike sheet piles that are continuously driven adjacent to each other, so there is no need to consider the position of adjacent piles when placing a new pile. Therefore, the position of adjacent piles was not taken into consideration. Therefore, if these conventional pile driving techniques are used as they are for sheet pile placement, if the existing sheet pile adjacent to the newly placed sheet pile is placed at a shifted position, the sheet piles will be There was a problem that a new sheet pile could not be placed at a predetermined position with high accuracy due to interference (collision). In this case, if it is intended to correct the displacement of the placement position, it is necessary to raise and lower the sheet pile to position it at the target position, and an increase in the complexity of the work cannot be avoided. In particular, when placing sheet piles at a managed disposal site, repeated pile raising and lowering results in the failure of the clay layer (water-impervious layer) of the placement ground to be destroyed. It was difficult to cope with this method.
Japanese Patent Laid-Open No. 11-209978 JP 2002-21077 A

  The object of the present invention is that when a new sheet pile is sequentially placed next to an existing sheet pile and the joint portions are fitted to each other, the adjacent sheet pile is interfered and cannot be placed at a predetermined position. An object of the present invention is to provide a sheet pile placing support system that can prevent and place at a predetermined position with high accuracy.

  In order to achieve the above object, the sheet pile placing support system of the present invention has an automatic tracking light wave range finder that detects reflected light from a reflector and detection data of this automatic tracking light wave range finder. And the automatic tracking light wave ranging which detects the reflected light from one reflector attached around the upper end of a new sheet pile to be placed. Based on the detection data of the angle measuring instrument, the calculation device calculates the two-dimensional plane coordinates of the reference point of the new sheet pile to be placed, and sets the two-dimensional plane coordinates of the reference point after placement of the sheet pile. A new sheet pile that is configured to be memorized as a two-dimensional plane coordinate of the reference point of the sheet pile, and is placed next to the existing sheet pile in order by fitting the new sheet piles with each other's joints. 2D plane coordinates of the reference point and new to be placed Based on the comparison with the two-dimensional plane coordinates of the reference point of the existing sheet pile adjacent to the sheet pile, index data of the target placement position on the two-dimensional plane of the new sheet pile to be placed is calculated, and the index data is It is characterized by being displayed in real time on a monitor.

  Here, the reflector can be attached to the center position in the width direction of the upper end portion of the new sheet pile to be placed, or is attached to the chuck portion of the pile driving machine that holds the upper end portion of the new sheet pile to be placed. You can also. In addition, based on the detection data of the automatic tracking light wave range finder, the arithmetic unit can calculate the height direction coordinates of the reference point of a new sheet pile to be placed and display it on the monitor in real time. it can.

  According to the present invention, based on the detection data of the automatic tracking light wave range finder that detects the reflected light from one reflector attached around the upper end of the new sheet pile to be placed, the calculation device can The two-dimensional plane coordinates of the reference point of the new sheet pile to be installed are calculated, and the two-dimensional plane coordinates of the reference point after placing the sheet pile are stored as the two-dimensional plane coordinates of the reference point of the existing sheet pile. Next, when placing a new sheet pile next to the existing sheet pile by fitting the joints to each other, the two-dimensional plane coordinates of the reference point of the new sheet pile to be placed and the new sheet pile to be placed Based on the comparison with the two-dimensional plane coordinates of the reference point of the existing sheet pile adjacent to the target, the index data of the target placement position on the two-dimensional plane of the new sheet pile to be placed is calculated, and this index data is used as a monitor. Display in real time, so the operator can monitor While confirming the index data is displayed, it is possible to pouring a new sheet pile to accurately place. Thus, when placing a new sheet pile, it is guided in association with the position data of the existing adjacent sheet pile, so that interference with the adjacent sheet pile can be suppressed. Thereby, the trouble that the newly placed sheet pile interferes with the existing adjacent sheet pile and cannot be placed at a predetermined position is eliminated, and the sheet pile can be placed at a predetermined position with high accuracy.

  Hereinafter, the sheet pile placing support system of the present invention will be described based on the embodiment shown in the drawings, taking as an example the case of placing a steel sheet pile.

  As illustrated in FIGS. 1 and 2, the sheet pile placing support system according to the present invention includes an automatic tracking light wave range finder 1 that detects reflected light from the reflector 4, and this automatic tracking light wave range finder. A computing device 2 such as a computer to which the detection data of the device 1 is input, and a monitor 3 for displaying the computation result of the computing device 2 are provided. The automatic tracking light wave range finder 1 is disposed, for example, in a land portion around the field area, and transmits detection data to the arithmetic device 2 by wireless communication or the like. The arithmetic device 2 and the monitor 3 are connected by wireless or wired.

  The reflector 4 is a so-called mirror or reflecting prism, and one reflector 4 is attached around the upper end of the steel sheet pile 12 (12a, 12b, 12c). In this embodiment, the reference point of the steel sheet pile 12 is set to the center position in the width direction of the upper end portion of the steel sheet pile 12, and the reflector 4 is attached to this reference point. Data for specifying the shape of the steel sheet pile 12 to be placed (length, cross-sectional dimension and angle, etc.) and the position of the reference point of the steel sheet pile 12 (position where the reflector 4 is attached) are specified for the arithmetic device 2. Data has been entered.

  A support pile 10 is placed in advance in the field area where the steel sheet pile 12 is placed, and a conductor 11 is installed on the support pile 10. The steel sheet pile 12 is driven so as to be along the conductive material 11. In addition, a work boat 5 on which a crane 6 is mounted is disposed in the site area, and a vibro hammer 8 serving as a pile driver is suspended from the crane 6. A monitor 3 is arranged in the operator room 7 of the crane 6. The steel sheet pile 12 is driven by being gripped by the chuck portion 9 of the vibrator hammer 8 at the upper end and moving to the target placement position.

  First, the first steel sheet pile 12a is placed at a predetermined position along the conductor 11 as illustrated in FIGS. The position coordinates (two-dimensional plane coordinates or three-dimensional coordinates) of the steel sheet pile 12a after placement are the detection data of the automatic tracking lightwave ranging finder 1 that detects the reflected light of the reflector 4 attached to the reference point. Based on the calculation by the calculation device 2 or obtained by another method and input to the calculation device 2 and stored.

  Next, a new steel sheet pile 12b is placed next to the existing steel sheet pile 12a so that the joint portions 13 are fitted to each other. Next, after the steel sheet pile 12b is placed, the existing steel sheet pile 12b is placed. A new steel sheet pile 12c is placed next to the sheet pile 12b so that the joint portions 13 are fitted together. In this way, the required number of steel sheet piles 12 are sequentially placed in the same procedure.

  As shown in FIG. 4, the adjacent steel sheet piles 12a, 12b, and 12c are driven in a line-symmetrical direction around the fitting center line Hb, and the automatic tracking light wave range finder 1 is disposed at a fixed point. Has been. Therefore, the reflector 4 is a steel plate at the reference points of the steel sheet piles 12a, 12b, and 12c in the order of placement so that the automatic tracking light wave rangefinder 1 can detect the reflected light from the reflector 4. The sheet piles 12a, 12b, and 12c are alternately attached to the front and back.

  The following describes the positioning and placing procedure of the steel sheet pile 12c according to the present invention, taking as an example the case of placing a new steel sheet pile 12c next to the existing steel sheet pile 12b.

  The two-dimensional plane coordinates of the reference point Pb of the existing steel sheet pile 12b illustrated in FIG. 4 are detected by the automatic tracking light wave range finder 1 after reflecting the reflected light from the reflector 4 after placing the steel sheet pile 12b. The calculation device 2 calculates and stores the detection data based on the detection data. Since the shape data of the steel sheet pile 12b is input to the arithmetic device 2, when a new steel sheet pile 12c is placed at any position, interference and friction between the joint portions 13 of the adjacent steel sheet piles 12b and 12c are suppressed. Thus, it can be calculated whether it can be placed smoothly. Note that line segments Cb and Cc in FIG. 4 indicate the center lines in the width direction of the steel sheet piles 12b and 12c, respectively.

  That is, based on the two-dimensional plane coordinate (known value) of the reference point Pb of the existing steel sheet pile 12b and the known X-direction movement dimension Xb and Y-direction movement dimension Yb specified by the shape of the steel sheet pile 12b, a new steel The calculation device 2 calculates the two-dimensional plane coordinates to be positioned by moving the reference point Pc of the sheet pile 12c. The two-dimensional plane coordinates to be positioned are the target placement position coordinates on the two-dimensional plane of the new steel sheet pile 12c. Specifically, the coordinate obtained by adding the known X direction movement dimension Xb from the X coordinate of the reference point Pb becomes the X coordinate of the target placement position coordinate, and the known Y direction movement dimension Yb from the Y coordinate of the reference point Pb. The added coordinate becomes the Y coordinate of the target placement position coordinate.

  When placing a new steel sheet pile 12c, it is based on the detection data of the automatic tracking light wave range finder 1 that detects the reflected light from one reflector 4 attached around the upper end of the steel sheet pile 12c. Then, the current two-dimensional plane coordinates of the reference point Pc of the steel sheet pile 12c are sequentially calculated by the arithmetic unit 2. And the target placement position coordinates calculated based on the two-dimensional plane coordinates of the reference point Pc of the steel sheet pile 12c at the present time and the already stored reference point Pb of the existing steel sheet pile 12b, Are compared by the arithmetic unit 2 to calculate index data.

  The calculated index data is displayed on the monitor 3 in real time. The index data is, for example, a difference dimension (X direction divergence distance, Y direction divergence distance) between the target placement position coordinates and the current two-dimensional plane coordinates of the reference point Pc. Alternatively, a graphic image is displayed together with a numerical value so that the degree of deviation can be easily grasped.

  The index data displayed on the monitor 3 in real time is illustrated in FIG. In this example, the target placement position of the new steel sheet pile 12c is displayed as a diagonal line as the upper surface shape A of the steel sheet pile 12c. Further, the current position of the steel sheet pile 12c positioned (moved) for placement is displayed on the same screen as a top surface shape B of the steel sheet pile 12c. Therefore, the operator operates the crane so that the upper surface shape B of the steel sheet pile 12c displayed in white is matched with the upper surface shape A of the steel sheet pile 12c displayed in hatching. The sheet pile 12c can be driven at the target position.

  As described above, according to the present invention, the operator operates the crane so that the target placement position coordinates coincide with the current two-dimensional plane coordinates of the reference point Pc while viewing the index data on the monitor 3. A new steel sheet pile 12c can be reliably and easily guided to a predetermined position. After guiding to a predetermined position, a new steel sheet pile 12c is driven by the vibro hammer 8 at the predetermined position.

  When a certain depth is provided, the position of the steel sheet pile 12c is eliminated due to the fitting of the joint portions 13. Therefore, the position of the steel sheet pile 12c is unstable. Before fitting the existing steel sheet pile 12b and the joint portion 13 to each other and until the placement depth is shallow, new data is seen while viewing the index data. It is preferable to perform guidance and driving work of the steel sheet pile 12c.

  The two-dimensional plane coordinates of the reference point Pc after placing the steel sheet pile 12c are stored in the arithmetic unit 2 as the two-dimensional plane coordinates of the reference point Pc of the existing steel sheet pile 12c. The two-dimensional plane coordinates of the reference point Pc of the existing steel sheet pile 12c are used when a new steel sheet pile 12 is placed next to the existing steel sheet pile 12c. As described above, in the present invention, the steel sheet pile 12 to be newly placed will be placed immediately before the index data of the target placement position on the two-dimensional plane of the new steel sheet pile 12 is calculated. The two-dimensional plane coordinates of the reference points of the adjacent existing steel sheet piles 12 are used.

  Since the new steel sheet pile 12c is guided to a predetermined position and placed in association with the position data of the reference point Pb of the adjacent existing steel sheet pile 12b, the joint portions 13 of the adjacent steel sheet piles 12b and 12c are caused to interfere and rub. It is possible to drive smoothly without suppressing interference or friction. Therefore, there is no problem that the new steel sheet pile 12c interferes with the adjacent existing steel sheet pile 12b and cannot be placed at a predetermined position, and can be placed at a predetermined position with high accuracy.

  By attaching the reflector 4 to the center position in the width direction of the upper end portion of each steel sheet pile 12 to be newly placed as in the above embodiment, stable position information with less shaking of the steel sheet pile 12 to be placed is obtained. Obtainable. The reflector 4 may be an inexpensive one in which an adhesive or the like is applied to the back surface, for example. Alternatively, the reflector 4 can be attached to the chuck portion 9 of the vibrator hammer 8. In this case, it is not necessary to attach the reflector 4 to each steel sheet pile 12.

  Moreover, based on the detection data of the automatic tracking light wave range finder 1 that detects the reflected light of the reflector 4 of the new steel sheet pile 12c, the current height direction coordinates of the reference point Pc of the steel sheet pile 12c are It is also possible to display the three-dimensional coordinates of the reference point Pc at the time of placement on the monitor 3 in real time together with the two-dimensional plane coordinates described above calculated by the arithmetic device 2.

  In addition, the sheet pile of this invention includes a steel sheet pile, a steel pipe sheet pile, a PC sheet pile, and the like.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole schematic diagram which illustrates the placement assistance system of the sheet pile of this invention. It is a side view which illustrates the placing process of the steel sheet pile by the placing assistance system of FIG. It is AA sectional drawing of FIG. It is explanatory drawing which illustrates the calculation method of the target placement position of a new steel sheet pile. It is explanatory drawing which illustrates the index data displayed on a monitor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Automatic tracking light wave range finder 2 Computation apparatus 3 Monitor 4 Reflector 5 Work ship 6 Crane 7 Operator room 8 Vibro hammer 9 Chuck part 10 Support pile 11 Conductive material 12 12a, 12b, 12c Steel sheet pile 13 Joint part

Claims (4)

  An automatic tracking light wave range finder that detects the reflected light from the reflector, an arithmetic device to which detection data of the automatic tracking light wave range finder is input, and a monitor that displays the calculation result of the arithmetic device And is placed by the arithmetic unit based on the detection data of the automatic tracking light wave range finder that detects the reflected light from one reflector attached around the upper end of the new sheet pile to be placed. The two-dimensional plane coordinates of the reference point of the new sheet pile are calculated, and the two-dimensional plane coordinates of the reference point after placing the sheet pile are stored as the two-dimensional plane coordinates of the reference point of the existing sheet pile, Next to the existing sheet pile, when placing a new sheet pile by fitting the joints between the two, the two-dimensional plane coordinates of the reference point of the new sheet pile to be placed, and the new sheet pile to be placed Comparison with two-dimensional plane coordinates of reference points of adjacent existing sheet piles Based on, to calculate the index data of the target hitting established position in the two-dimensional plane of a new sheet pile for pouring, pouring support system sheet pile to be displayed in real time the index data to the monitor.   The sheet pile placing support system according to claim 1, wherein the reflector is attached to a center position in a width direction of an upper end portion of a new sheet pile to be placed.   The sheet pile placing support system according to claim 1, wherein the reflector is attached to a chuck portion of a pile driving machine that holds an upper end portion of a new sheet pile to be placed.   A height direction coordinate of a reference point of a new sheet pile to be placed is calculated by the arithmetic unit based on detection data of the automatic tracking light wave range finder and displayed in real time on the monitor. The sheet pile placing support system according to any one of 3 above.

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