JP2011191247A - Method for measuring enlarged diameter part of pile hole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for measuring enlarged diameter part of a pile hole enabling easy recognition of the dimension of an enlarged diameter part. <P>SOLUTION: In the method for measuring enlarged diameter part of the pile hole, the dimension of the enlarged diameter part 5 located on the pile hole bottom 4 side of the pile hole 1 formed by dry digging execution is measured. A measurement reference member 11 is installed in the center of the pile hole bottom of the enlarged diameter part, the bottom rim 4b of the pile hole bottom of the enlarged diameter part and the measurement reference member 11 are photographed with a camera 13 installed in the pile hole, and the diameter dimension D of the enlarged diameter part is measured based on the photographed image. A scale member 12 is installed along the inner wall of the pile hole, the upper edge 5t of the enlarged diameter part and the scale member 12 are photographed with the camera installed in the pile hole, and the height dimension H of the enlarged diameter part is measured based on the photographed image. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for measuring a diameter-expanded portion of a pile hole in which the dimension of the diameter-expanded portion of the pile hole formed by so-called anhydrous excavation, which excavates the ground without using water, can be confirmed.

There is known an enlarged diameter measuring device that measures the size and the like of an enlarged diameter portion formed on the pile bottom side of a pile hole that has been dug without water (for example, see Patent Document 1).
In this diameter expansion measuring device, the camera is installed in a casing provided at the tip of the drilling machine's kelly bar, and the pile diameter confirmation ruler is mounted on the casing so that it can extend in the imaging direction of the camera. It has a configuration. Then, after positioning the casing on which the camera and the pile diameter confirmation ruler are mounted in the enlarged portion of the pile hole and bringing the tip of the pile diameter confirmation ruler into contact with the inner wall of the enlarged portion, the center axis of the pile hole is Rotate the kelly bar as the center of rotation and shoot the situation where the tip of the ruler for checking the pile diameter is in contact with the inner wall of the enlarged diameter part over the entire inner circumference of the inner diameter part of the enlarged diameter part, and visually check this photographed image By doing this, it is confirmed whether or not the enlarged diameter portion has a necessary dimension.

JP 2008-122118 A

However, in the device of Patent Document 1, is a part of the bottom edge of the enlarged diameter part taken from the center of the hole bottom of the enlarged diameter part, and the tip of the ruler for checking the pile diameter is in contact with the inner wall of the enlarged diameter part? Since we are confirming whether or not, we have to shoot with the camera many times while rotating the Keriba. Moreover, since the contact kelly bar is rotated while contacting the tip of the pile diameter confirmation ruler and the inner wall of the enlarged diameter portion, the rotation center of the kelly bar may be shifted. If the rotation center of the Kellyba is deviated, the camera position is deviated and the photographing conditions are different. Therefore, an image photographed under the same conditions cannot be obtained, and the size of the enlarged diameter portion may not be confirmed.
This invention is made | formed in view of the said subject, and provides the enlarged diameter part measuring method of the pile hole which enabled it to confirm the dimension of an enlarged diameter part easily.

The method for measuring the enlarged portion of the pile hole according to the present invention is a method for measuring the enlarged portion of the pile hole for measuring the dimension of the enlarged portion located on the bottom side of the pile hole of the pile hole formed by non-excavation construction. The measurement reference member is installed in the center of the pile hole bottom of the enlarged diameter portion, and the bottom edge of the pile hole bottom of the enlarged diameter portion and the measurement reference member are photographed by a camera installed in the pile hole, and this photographed image is taken. Since the diameter dimension of the enlarged diameter part was measured by this, the diameter dimension of the enlarged diameter part can be easily confirmed.
The method for measuring the enlarged portion of the pile hole according to the present invention is a method for measuring the enlarged portion of the pile hole for measuring the dimension of the enlarged portion located on the bottom side of the pile hole of the pile hole formed by non-excavation construction. The scale member is installed along the inner wall of the pile hole, the upper edge of the enlarged diameter portion and the scale member are photographed by the camera installed in the pile hole, and the height dimension of the enlarged diameter portion is determined by the photographed image. Since it measured, the height dimension of a diameter expansion part can be confirmed easily.
In addition, since the lower end of the camera position setting member with the camera installed on the top is installed on the bottom of the pile hole and the above-mentioned shooting is performed with the camera, the entire surface of the pile hole bottom and the bottom edge of the pile hole bottom are The entire circumference can be photographed at the same time, and the upper edge of the enlarged diameter portion and the scale member can be photographed at a time, so that the diameter size of the enlarged diameter portion and the height dimension of the enlarged diameter portion can be easily confirmed.

The figure which shows the enlarged diameter part measuring apparatus of a pile hole and a pile hole (embodiment 1). 1 is a perspective view illustrating a photographing apparatus (first embodiment). FIG. FIG. 3 is a diagram illustrating a captured image (first embodiment).

First, the pile hole used as a measuring object is demonstrated. As shown in FIG. 1, the pile hole 1 is formed by a so-called non-excavation construction in which the ground 2 is excavated without using water in the ground 2 having high self-sustaining properties such as a loam layer and less spring water. It is a thing.
The pile hole 1 includes a foundation hole 3 and an enlarged diameter portion 5 in which the diameter of the foundation hole 3 is enlarged on the pile hole bottom 4 side of the foundation hole 3.
The pile hole 1 is, for example, a hole formed by excavating the ground using an excavator provided with an excavation mechanism called a bucket at the tip of a rotating shaft outside the figure. In other words, the base hole 3 is dug using an unillustrated bucket for digging, and the enlarged-diameter portion 5 is formed using an enlarged-diameter bucket outside the figure.

  As shown in FIG. 1, the enlarged-diameter measuring device 10 includes a measurement reference member 11, a scale member 12, a camera 13, a camera position setting member 14, a camera attachment member 15, a camera rotation drive support member 16, and a camera. A rotation drive source 17, a camera control device 18, a display device 19, and a projector 20 are provided.

  A specific example of the enlarged diameter portion measuring apparatus 10 will be described. As the measurement reference member 11, a reference ruler formed in a cross shape is used. The length of each straight portion where the cross of the reference ruler crosses is shorter than the diameter of the pile hole bottom 4 (for example, about 1 m). As the scale member 12, a steel scale such as a measure (a tape measure) installed along the inner wall 1 a of the pile hole 1 is used. A digital camera is used as the camera 13. As the camera position setting member 14, a frame assembly that is framed in a rectangular parallelepiped shape with a bar is used (see FIG. 2). As this frame assembly, for example, an upper frame portion 14t and a lower frame portion are formed to be about 1 m square and have a height of about 2 m. The camera attachment member 15 is a member for attaching the camera 13 so that the camera 13 is suspended from the center of the upper frame portion 14t of the frame assembly placed on the pile hole bottom 4. The camera rotation drive support member 16 is a member that rotatably supports the camera 13 with the center axis 13b of the lens 13a of the camera 13 as the rotation center axis, and supports the camera 13 with the horizontal axis 13c as the rotation center axis. is there. The camera rotation drive source 17 is a motor that rotates the camera 13 by rotating the rotation center axis described above. The camera control device 18 is a control device for controlling the camera 13 by wireless remote operation or wired. The display device 19 is a device that inputs image data captured by the camera 13 and displays it on the screen. The projector 20 is a lamp that is attached to the camera position setting member 14 to illuminate the upper end edge 5t of the enlarged diameter portion 5 and the scale member 12 and the pile hole bottom 4. The camera 13, the camera position setting member 14, the camera mounting member 15, the camera rotation drive support member 16, the camera rotation drive source 17, and the projector 20 constitute an imaging device 21.

A method for measuring the expanded portion of the pile hole will be described. After forming the pile hole 1, the scale member 12 is installed along the inner wall 1 a of the pile hole 1, and the measurement reference is made so that the cross center 11 a of the measurement reference member 11 and the center 4 a of the pile hole bottom 4 coincide with each other. The member 11 is installed on the pile hole bottom 4 (see FIG. 3). Then, the photographing device 21 is suspended by a crane or the like and installed in the pile hole 1. In this case, when the camera position setting member 14 is placed on the pile hole bottom 4, the camera 13 attached to the upper frame portion 14 t is attached to the entire circumference of the pile hole bottom 4 and the bottom edge 4 b of the pile hole bottom 4. Use a height that allows you to take pictures at once.
Then, the camera rotation drive source 17 is controlled by a remote operation by the camera control device 18 while the operator confirms an image (see FIG. 3) sent from the camera 13 via the signal line 22 on the screen of the display device 19. Then, the posture of the camera 13 is adjusted so that the entire surface of the pile hole bottom 4 and the entire circumference of the bottom edge 4b of the pile hole bottom 4 can be photographed at once. The operator adjusts the posture of the camera 13 and then activates the camera 13 by pressing the photographing switch of the camera 13 by remote control by the camera control device 18 (by releasing the shutter). The entire circumference (the entire bottom edge) of the bottom edge 4b of the bottom 4 is photographed. As a result, a photographed image 23 as shown in FIG. 3 in which the entire surface of the pile hole bottom 4 and the entire periphery of the bottom edge 4 b of the pile hole bottom 4 is photographed is displayed on the display screen of the display device 19 via the signal line 22. . Then, the confirmer looks at the photographed image 23 displayed on the screen of the display device 19 and visually measures the distance between the tip 11t of the cross of the measurement reference member 11 and the bottom edge 4b of the pile hole bottom 4, thereby expanding the image. It is confirmed whether the diameter dimension D of the bottom part of the diameter part 5 has a required dimension.
In addition, if the scale member 12 is first installed as described above, it is preferable that the installation work can be performed while confirming the depth position when the photographing apparatus 21 is installed. However, when the scale member 12 is installed, As long as it is before confirming the height dimension H of the enlarged diameter part 5 mentioned later, it may be anytime.

Further, the operator rotates the camera rotation drive source 17 by remote control or the like by the camera control device 18 while confirming the image sent from the camera 13 on the screen of the display device 19, and the upper end edge 5 t of the enlarged diameter portion 5. And the attitude | position of the camera 13 is adjusted so that the scale of the scale member 12 can be image | photographed at once. After the operator adjusts the posture of the camera 13, the camera control device 18 activates the camera 13 by pressing the shooting switch of the camera 13 by remote operation or the like, thereby shooting the upper edge 5 t of the enlarged diameter portion 5 and the scale of the scale member 12. To do. Then, the confirmer looks at the photographed image displayed on the screen of the display device 19 and measures the numerical value of the scale that matches the upper edge 5t, so that the height dimension H of the enlarged diameter portion 5 is a required dimension. Check if you have it.
That is, the lower end of the camera position setting member 14 having the camera 13 installed thereon is installed on the pile hole bottom 4, and the entire surface of the pile hole bottom 4 and the pile are captured by the camera 13 from above the pile hole bottom 4 and the bottom edge 4 b. The upper end edge 5t of the enlarged diameter portion 5 and the scale member 12 are scaled by the camera 13 from above the upper end edge 5t of the enlarged diameter portion 5 so that the entire circumference of the bottom edge 4b of the hole bottom 4 can be photographed at once. I was able to shoot at once.

According to the method for measuring the expanded portion of the pile hole according to the embodiment, by installing the lower end of the camera position setting member 14 with the camera 13 installed on the upper portion of the pile hole bottom 4, the pile hole bottom 4 and the bottom edge 4b From above, the camera 13 can shoot the entire surface of the pile hole bottom 4 and the entire circumference of the bottom edge 4b of the pile hole bottom 4 at once, and from above the upper end edge 5t of the enlarged diameter portion 5, Since the upper end edge 5t of the diameter part 5 and the scale of the scale member 12 can be photographed at a time, the diameter D of the bottom of the enlarged diameter part 5 and the height dimension H of the enlarged diameter part 5 can be easily confirmed.
In addition, since the camera 13 is supported by the camera rotation drive support member 16 so as to be rotatable about the central axis 13b of the lens 13a and is supported so as to be rotatable about the horizontal axis 13c. While confirming the image sent from the camera 13 on the screen of the display device 19, the camera rotation drive source 17 is controlled by remote control or the like by the camera control device 18, and the entire surface of the pile hole bottom 4 and the bottom of the pile hole bottom 4 are controlled. The posture of the camera 13 can be easily adjusted so that the entire circumference of the edge 4b can be photographed at once.
For this reason, the diameter dimension D of the enlarged diameter part 5 can be easily confirmed by the one photographed image 23, and the height dimension H of the enlarged diameter part 5 can be easily confirmed by the one photographed image.
Moreover, even if the camera position setting member 14 is installed at an inclination and the center axis 1b of the pile hole 1 and the center axis 13b of the lens 13a are displaced, the entire surface of the pile hole bottom 4 and the bottom edge 4b of the pile hole bottom 4 The posture of the camera 13 can be easily adjusted so that the entire circumference can be photographed at once.
Further, by photographing the lower side of the camera position setting member 14 installed in the pile hole 1 together, the photographed camera position setting member 14 has a diameter D at the bottom of the enlarged diameter portion 5 and an enlarged diameter portion 5. It can also be used as an auxiliary reference for confirming the height dimension H of this, and in this case, the confirmation operation can be made easier.

  In addition, the magnitude | size of the enlarged diameter part 5 changes with scales of the building to support. Therefore, the camera position setting member 14 may use different heights depending on the size of the pile hole 1 so that the entire bottom edge 4b of the pile hole bottom 4 and the pile hole bottom 4 can be photographed at once. Or what is comprised so that height can be changed by stacking two or more, and what was constituted so that height can be changed by expanding and contracting should be used.

  Moreover, when the whole surface of the pile hole bottom 4 and the whole circumference of the bottom edge 4b of the pile hole bottom 4 cannot be photographed at once, the whole surface of the pile hole bottom 4 and the whole circumference of the bottom edge 4b of the pile hole bottom 4 are pluralized. It suffices to shoot separately, connect these captured images, create an image including the entire surface of the pile hole bottom 4 and the entire periphery of the bottom edge 4b of the pile hole bottom 4, and visually check the image. As described above, even when the whole surface of the pile hole bottom 4 and the entire circumference of the bottom edge 4b of the pile hole bottom 4 are divided and photographed, the posture of the camera 13 can be easily adjusted, so that a plurality of photographs can be easily performed. .

  In addition, if image data taken using a digital camera is stored as the camera 13, a three-dimensional measurement system is used when it is necessary to present an accurate dimension of the diameter D of the enlarged diameter portion 5 at a later date. If the image data is analyzed, an accurate dimension of the diameter dimension D of the enlarged diameter portion 5 can be presented.

  In addition, using the camera position setting member 14 installed on the pile hole bottom 4 as a measurement reference member without using the measurement reference member 11, the diameter D of the bottom of the enlarged diameter portion 5 and the height of the enlarged diameter portion 5 are used. H may be confirmed.

1 pile hole, 1a inner wall, 4 pile hole bottom, 4b bottom edge, 5 enlarged diameter part, 5t top edge,
11 measurement reference member, 12 scale member, 13 camera, 23 photographed image,
D Diameter size of the enlarged portion, H Height dimension of the enlarged portion.

Claims (3)

  A method for measuring an enlarged portion of a pile hole that measures a dimension of an enlarged portion located on a bottom side of a pile hole of a pile hole formed by anhydrous digging, and a measurement reference member at the center of the pile hole bottom of the enlarged portion The bottom edge of the pile hole bottom of the enlarged diameter part and the measurement reference member were photographed with a camera installed in the pile hole, and the diameter dimension of the enlarged diameter part was measured from this photographed image. To measure the enlarged diameter of the pile hole.   It is a method for measuring the diameter of the enlarged portion of the pile hole that is measured on the bottom side of the pile hole of the pile hole formed by the non-excavation construction, and a scale member is installed along the inner wall of the pile hole, Measurement of the expanded portion of the pile hole, wherein the upper edge of the expanded portion and the scale member are photographed by a camera installed in the pile hole, and the height of the expanded portion is measured from the captured image. Method.   3. The pile hole expansion according to claim 1, wherein a lower end of a camera position setting member having a camera installed thereon is installed at a bottom of the pile hole and the photographing is performed by the camera. Diameter measurement method.

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