JP2024133792A - A device for controlling the verticality of guide pipes for erecting structural columns - Google Patents

Abstract

[Problem] To provide a device for managing the verticality of a guide pipe for erecting a structural column, which is used for erecting a structural column on a cast-in-place pile, and which accurately and easily manages the verticality of the guide pipe when the guide pipe is erected. [Solution] The device includes a measuring pipe 7, which is installed along the outer wall of the guide pipe 4 and parallel to the central axis of the guide pipe 4, with a target plate 71 at the bottom, a laser irradiation device 81, which is installed above the measuring pipe 7, and which irradiates laser light vertically downward toward the target plate 71, a camera 82 that photographs the target plate 71 irradiated with the laser light, a lighting device 83 that illuminates the inside of the guide pipe 4, a wireless communication device 84 that allows images captured by the camera 82 to be shared on a mobile terminal, and a telescope 85 for visually viewing the target plate 71. [Selected Figure] Figure 5

Description

The present invention relates to a device for managing the verticality of guide pipes used when erecting structural columns on cast-in-place piles.

Traditionally, in order to shorten the construction period and ensure the safety of the earth retaining structure, the inverted construction method has been used instead of the forward construction method as a construction method for buildings with underground structures. In particular, as the trend for underground structures to become larger and deeper along with the rise in height of buildings continues to accelerate, the superiority of the inverted construction method has been recognized in terms of the impact on the surrounding environment, etc.

In the inverted construction method, first, a retaining wall is constructed along the perimeter of the excavation. Next, cast-in-place piles, which are permanent piles, are driven in, and at this time, structural columns are erected on the cast-in-place piles. Next, for example, the floor and beams of the first floor are constructed as a preliminary floor, and this preliminary floor is supported by the structural columns. Next, the underground structure is constructed from the upper floor to the lower floor while excavating the bottom side of the preliminary floor, and the structure above the preliminary floor is constructed from the lower floor to the upper floor. In constructing the underground structure, the work of excavating the basement and constructing floors and beams for each underground floor is repeated.

By the way, when erecting structural columns on cast-in-place piles, a platform is placed above the pile hole and the structural column is supported by this platform, allowing the position and elevation of the structural column to be adjusted.
In this case, the verticality of the structural columns is controlled using water pipes or optical plumbing devices attached to the structural columns (see Patent Documents 1 and 2).

Meanwhile, as a method of erecting a structural column by embedding it in a cast-in-place pile and integrating it with it, as shown in Figure 1, a method has been proposed and put into practical use in which concrete is poured into a pile hole 2 excavated by a rotary excavator 1 to form a cast-in-place pile 3, a structural column erection device 5 equipped with a guide tube 4 having a rectangular cross section is then installed, and as shown in Figure 2, a structural column 6 is lowered into the pile hole 2 so that it is guided by the guide tube 4, and as shown in Figure 3, the structural column 6 is erected into the unhardened cast-in-place pile 3 (see Patent Documents 3 and 4).

Japanese Patent Application Publication No. 7-301527 JP 2014-80836 A Japanese Patent Application Publication No. 11-61812 JP 2019-131990 A

Incidentally, when erecting a guide pipe 4 used when erecting a structural column 6 on a cast-in-place pile 3 as described in Patent Documents 3 and 4, first, an inclinometer 41 and a jack 42 are attached to the guide pipe 4 in advance, the guide pipe 4 is lifted by a lifting machine (not shown), and placed inside the casing 21 through the erection frame 51, and the horizontal position of the guide pipe 4 is determined at the position of the erection frame 51.
Next, while measuring the verticality of the guide pipe 4 with the inclinometer 41, the jack 42 is driven to adjust the plumbing (verticality) of the guide pipe 4.

The first object of the present invention is to provide a device for managing the verticality of a guide pipe for erecting a structural column, which accurately and easily manages the verticality of the guide pipe when erecting the guide pipe used to erect a structural column into the cast-in-place pile.

The second object of the present invention is to provide a device for managing the verticality of guide pipes for erecting structural columns, which allows information on the verticality of the guide pipes to be managed on a mobile terminal.

In order to achieve the first object, the present invention provides a device for managing the verticality of a guide pipe for erecting a structural column, the device being for managing the verticality of a guide pipe for erecting a structural column when erecting a guide pipe used for erecting a structural column on a cast-in-place pile,
a measuring tube having a target plate disposed at the bottom thereof, the measuring tube being disposed along an outer wall of the guide tube and parallel to a central axis of the guide tube;
a laser irradiation device that is installed above the measuring tube and that irradiates a laser beam vertically downward toward a target plate, and a camera that photographs the target plate irradiated with the laser beam;
The present invention is characterized in that it is provided with:

In addition, to achieve the second objective, the device may be equipped with wireless communication means for enabling images captured by the camera to be shared on a mobile terminal.

A lighting device that illuminates the inside of the guide tube can also be installed above the measurement tube.

A telescope may also be provided above the measurement tube for visually observing the target plate.

According to the device for managing the verticality of a guide pipe for erecting structural columns of the present invention, a measuring pipe with a target plate at the bottom is installed along the outer wall of the guide pipe, parallel to the central axis of the guide pipe, and a laser irradiation device that irradiates laser light vertically downward toward the target plate and a camera that photographs the target plate irradiated with the laser light are installed above the measuring pipe, and by using the camera to photograph the target plate irradiated with the laser light, the verticality of the guide pipe can be accurately and easily managed when erecting the guide pipe used for erecting structural columns into cast-in-place piles.

In addition, by providing a wireless communication means for enabling images captured by the camera to be shared on a mobile device, image data of the target plate irradiated with laser light captured by the camera, which is information on the verticality of the guide tube, can be managed on the mobile device.

In addition, by providing a lighting device that illuminates inside the guide tube, the visibility of the target plate irradiated with the laser light can be improved.

In addition, by providing a telescope for visually observing the target plate, the worker can directly view the target plate irradiated with the laser light.

This is an explanatory diagram showing the first step of an example of a method for erecting a structural column using a guide pipe for erecting a structural column. FIG. FIG. 1A shows a guide pipe to which the device for managing the verticality of a guide pipe for erecting a structural column of the present invention is applied, where (a) is a plan view, (b) is a front view, and (c) is a right side view. 1 shows a device for controlling the verticality of a guide pipe for erecting a structural column, where (a) is an oblique view of the upper part, (b) is an oblique view of the measuring pipe, and (c) is an oblique cross-sectional view of the entire device. 1A and 1B show a unit box of a device for managing the verticality of a guide pipe for erecting a structural column, in which (a) is a plan view and (b) is a front view. The following shows images of a target plate taken using a device for managing the verticality of guide pipes for erecting structural columns: (a) is a camera image before the verticality of the guide pipe is corrected, (b) is a camera image after the verticality of the guide pipe is corrected, and (c) is a photographic image taken with a telescope.

Below, an embodiment of the present invention, a device for controlling the verticality of a guide pipe for erecting a structural column, will be described with reference to the drawings.

4 to 6 show an embodiment of the device for controlling the verticality of a guide pipe for erecting a structural column according to the present invention.
This device for managing the verticality of a guide pipe for erecting a structural column is described in Patent Documents 3 and 4, and is used to measure the verticality of the guide pipe 4 when erecting the guide pipe 4 used for erecting a structural column 6 on a cast-in-place pile 3, while driving a jack (not shown) installed on the jack mounting portion 43 to manage the erection (verticality) of the guide pipe 4.The device is equipped with a measurement tube 7 with a target plate 71 at the bottom, which is installed parallel to the central axis of the guide pipe 4 along the outer wall of the guide pipe 4, a laser irradiation device 81 installed above the measurement tube 7 and which irradiates laser light vertically downward toward the target plate 71, a camera 82 that photographs the target plate 71 irradiated with laser light, a lighting device 83 that illuminates the inside of the guide pipe 4, a wireless communication means 84 for enabling images taken by the camera 82 to be shared on a mobile terminal, and a telescope 85 for visually observing the target plate 71.

The telescope 85 is used in the event that a malfunction occurs in the camera 82 or the wireless communication means 84, and can be provided as equipment.
In addition, as a power source for the camera 82 and the wireless communication means 84, for example, a removable battery (not shown) may be provided.

The measuring tube 7 is made of a steel tube whose length is at least 40%, preferably at least 50%, and more preferably at least 60% (about 6000 mm in this embodiment) of the length of the guide tube 4, which is about 8000 to 12000 mm, and whose diameter is about φ150 to 200 mm (about φ180 mm in this embodiment). A target plate 71 is placed at the bottom, and the upper and lower ends are sealed with cover members 72 and 73. The measuring tube 7 is installed along the outer wall of the rectangular cross-sectioned guide tube 4, parallel to the central axis of the guide tube 4, via an appropriate bracket fitting 74.
The cover member 72 that seals the upper end of the measuring tube 7 is made of a colorless and transparent material.

A stand 75 is attached to the upper end of the measurement tube 7, and a unit box 80 for arranging equipment such as a laser irradiation device 81 is attached on the stand 75.

The laser irradiation device 81 can be, for example, a general-purpose laser marking device that irradiates a cross-shaped laser beam vertically downward toward the target plate 71.

The wireless communication means 84 may be one that communicates via the Internet, or one that constructs a LAN without going via the Internet, by making the main body a Wi-Fi access point, or by using a Wi-Fi router, wirelessly connecting the camera 82 to a mobile terminal such as a smartphone or tablet, thereby enabling images taken by the camera 82 to be shared on the mobile terminal.

Figure 7(a) shows a camera image of a target plate 71 taken using this device for managing the verticality of guide tubes for erecting structural columns, before correcting the verticality of the guide tube 4 (when there is a misalignment in the Y-axis direction), Figure 7(b) shows a camera image after correcting the verticality of the guide tube 4 (when the misalignment in the Y-axis direction has been corrected), and Figure 7(c) shows a photographic image of the telescope after the misalignment in the Y-axis direction has been corrected.

According to this device for managing the verticality of guide pipes for erecting structural columns, when erecting a guide pipe 4 used for erecting a structural column 6 on a cast-in-place pile 3, the verticality of the guide pipe 4 is measured while the jack installed on the jack mounting part 43 is driven to manage the erection (verticality) of the guide pipe 4. By photographing the target plate 71 irradiated with laser light with a camera 82, the verticality of the guide pipe 4 can be accurately and easily managed when erecting the guide pipe 4 used for erecting a structural column 6 on a cast-in-place pile 3.

In addition, by providing a wireless communication means 84 for enabling images captured by the camera 82 to be shared on a mobile terminal, image data of the target plate 71 irradiated with laser light captured by the camera 82, which is information on the verticality of the guide tube 4, can be managed on the mobile terminal.

The above describes the device for managing the verticality of guide pipes for erecting structural columns of the present invention based on its embodiment, but the present invention is not limited to the configuration described in the above embodiment, and the configuration can be changed as appropriate within the scope of the spirit of the invention.

The device for managing the verticality of guide pipes for erecting structural columns of the present invention can accurately and easily manage the verticality of guide pipes used for erecting structural columns into cast-in-place piles, and since information on the verticality of the guide pipes can be managed on a mobile terminal, it can be suitably used for erecting guide pipes used for erecting structural columns into cast-in-place piles.

REFERENCE SIGNS LIST 1 Rotary drilling machine 2 Pile hole 3 Cast-in-place pile 4 Guide pipe 5 Structural column erection device 6 Structural column 7 Measuring pipe 71 Target plate 72 Lid member 73 Lid member 74 Bracket metal fitting 75 Mount 81 Laser irradiation device 82 Camera 83 Lighting device 84 Wireless communication means 85 Telescope

Claims (4)

A device for controlling the verticality of a guide pipe for erecting a structural column, for controlling the verticality of the guide pipe when erecting the guide pipe used for erecting a structural column on a cast-in-place pile,
a measuring tube having a target plate disposed at the bottom thereof, the measuring tube being disposed along an outer wall of the guide tube and parallel to a central axis of the guide tube;
a laser irradiation device that is installed above the measuring tube and that irradiates a laser beam vertically downward toward a target plate, and a camera that photographs the target plate irradiated with the laser beam;
A device for managing the verticality of a guide pipe for erecting structural columns, comprising: The device for managing the verticality of a guide pipe for erecting structural columns according to claim 1, characterized in that it is equipped with wireless communication means for enabling images captured by the camera to be shared on a mobile terminal. The device for managing the verticality of a guide pipe for erecting a structural column according to claim 1 or 2, characterized in that it is provided with a lighting device that is installed above the measuring pipe and illuminates the inside of the guide pipe. The device for managing the verticality of a guide pipe for erecting structural columns according to claim 1 or 2, characterized in that it is equipped with a telescope for visually checking the target plate, which is installed above the measurement pipe.

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