JP2001264060A - Pile positioning measuring method and pile positioning measuring device for steel frame member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pile position measuring method for a steel framed member in constructing a dome roof frame, without timbering, and an erection position measuring device used for the method. SOLUTION: A laser level is installed at the tip part of the steel framed member first positioned and erected at each story, and laser beams are irradiated in the horizontal direction from the laser level. A scale plate and a telecamera for collimating the graduation part of the scale plate are installed at the tip part of each subsequently erected steel framed member. A monitor screen for projecting the image of the scale plate, caught by the telecamera, is installed in a visually observable manner for a crane operator and a worker in the pile position working position of the steel framed member. The operator and the worker confirm the irradiated position of laser beams on the scale plate in the image on the monitor screen and make alignment, to proceed with the pile position work of each steel framed member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a method for measuring the position of a steel frame member when constructing a dome roof frame without any support, and a device for measuring the position of a steel member used in the method.

[0002]

2. Description of the Related Art When assembling and constructing a frame of a dome roof forming a large pillar-free space having a diameter of 200 m to 300 m with steel members, a large number of supports are usually erected from the ground to support the steel members. The general construction method is to proceed with construction.

However, according to the above-mentioned construction method, depending on the size of the dome roof, the temporary construction cost of the shoring can even exceed the construction cost of the roof, and as long as the shoring is in a forest, various constructions cannot be carried out on the ground under the roof. There are problems such as a prolonged construction period.

Therefore, there have already been proposed some construction methods for hanging a steel frame member by a crane and assembling the steel frame member without support.

[0005] For example, the construction method described in Japanese Patent Application Laid-Open No. 8-135,019 utilizes a ring effect of a shell structure to assemble steel members for each layer by stacking contour modules, and construct a dome roof frame without support. Technology.

In the method described in Japanese Patent Application Laid-Open No. H11-22011, a new steel frame member is erected inside the outermost compression ring, and the next compression ring is formed inside the compression ring to form a ring-shaped structure. This is a technology to form a structure and construct a dome roof frame without any support.

[0007] The conventional method of constructing a dome roof frame by unsupported construction including the above-mentioned two methods is a method in which a steel member in a radial direction is erected at each level with high precision, thereby finishing the dome roof. Quality is ensured. Therefore, in the construction work of the steel frame member, the operator of the crane and the worker at the construction work position of the steel frame member signal each other to confirm (measurement) the construction position of the steel frame member while performing the construction. I have to work.

As a method of measuring the position of the steel frame member, there are conventionally known techniques, for example, as follows.

(1) As the most basic method, there is a method of measuring the embedded position of a steel frame member in which a surveying engineer performs three-dimensional surveying using a swing, a transit, a level, and the like.

(2) For example, a technique for measuring a vertical erection position of a steel column using a laser oscillator and a light receiver described in Japanese Patent Application Laid-Open No. Hei 6-147896 is disclosed in Japanese Unexamined Patent Publication No. Hei 6-147896. There is a method that can be applied to the measurement technology of the erection position.

(3) For example, as described in JP-A-8-218633, a measuring instrument capable of simultaneously measuring three elements of a vertical angle, a horizontal angle and a distance, a power supply as a control mechanism, and a power supply There is also a method of measuring the embedded position of a steel member using a so-called total station, which comprises a controller for controlling and operating the measuring instrument via a supply and a personal computer for measurement.

[0012]

The position measurement method of the prior art (1) must be individually applied to all steel members when constructing a dome roof frame without support.
Takes a lot of time. As a result, the construction period is prolonged,
The cost is high, and the advantage of performing the work of erection of the steel frame member without support is reduced.

According to the position measuring method of the prior art (2), the installation position (inking position) of the laser oscillator is determined by individually measuring each steel member in accordance with the installation of the steel member in the radial direction. Have to do it and it takes a lot of time. In addition, the operator of the crane and the worker at the work position for building steel members must read the numerical value of the measurement display instrument for each steel frame member, judge and proceed with the building work. It is not easy to recognize the correlation with the numerical value of the instrument, and the accuracy and efficiency of the work differ depending on the skill of the operator.

According to the position measuring method of the prior art (3), efficient measurement can be performed with high accuracy to some extent based on a measuring instrument. However, as in the above-mentioned prior art (2), the operator of the crane and the worker at the installation work position of the steel frame member are
It is necessary to read and judge the numerical value of the measurement display instrument, and proceed with the construction work. Again, it is not easy to recognize the correlation between the construction work and the numerical value of the measurement display, and the accuracy of the work depends on the skill of the worker. And a difference in efficiency. In addition, the equipment used is expensive, resulting in high costs.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a position measuring technique which makes use of advantages of excellent workability and economical efficiency when constructing a dome roof frame without any support, and a crane operator and a steel frame are provided. Workers at the work position of building the members can directly confirm the building position of the steel members in common on the monitor screen directly, and can easily recognize the correlation between the image of the monitor screen and the building work, thereby improving the efficiency. An object of the present invention is to provide a method for measuring a position of a steel member to be installed and a device for measuring the position of a steel member to be used for the method, which can perform the work of installing a steel member in a specific manner, contribute to shortening the construction period, and can be implemented economically. .

[0016]

Means for Solving the Problems As a means for solving the above-mentioned problems, a method for measuring a erected position of a steel frame member according to the first aspect of the present invention is a method for constructing a dome roof frame without support. A method of measuring the position of a steel member being embedded,
For each layer, a laser level is installed at the tip of the steel member that was first positioned and built, and a laser beam was irradiated in the horizontal direction from the laser level. A scale plate and a television camera for collimating the scale portion of the scale plate are installed, and a monitor screen for displaying an image of the scale plate captured by the television camera is moved to a position where a crane operator and a steel member are to be built. The operator and the operator confirm the irradiation position of the laser beam on the scale plate in the image on the monitor screen, perform the alignment, and proceed with the work of building each steel frame member. It is characterized by the following.

According to a second aspect of the present invention, there is provided an apparatus for measuring the installation position of a steel member when constructing a dome roof frame without any support, wherein the installation position of the steel member is the first one in each story. A laser level that is installed at the tip of a steel member that is positioned and erected and that irradiates laser light in the horizontal direction, a scale plate that is installed at the tip of each steel member that is to be erected thereafter, and a scale of the scale plate A television camera for collimating the portion, and a monitor screen for displaying an image of a scale plate captured by the television camera, wherein the monitor screen is visible to an operator of the crane and an operator at a erected position of the steel frame member, respectively. It is characterized by being installed in a position.

According to a third aspect of the present invention, in the apparatus for measuring a erection position of a steel member according to the second aspect, the laser light irradiated from the laser level is an infrared laser light,
The television camera that collimates the scale portion of the scale plate is a CCD camera with a low-frequency light transmission filter, and the scale of the scale plate is displayed in red.

According to a fourth aspect of the present invention, in the apparatus for measuring a erected position of a steel member according to the second or third aspect, the television camera for collimating the scale portion of the scale plate transmits the photographed image data to the monitor main body by radio. It is a wireless television camera for transmitting.

According to a fifth aspect of the present invention, in the apparatus for measuring the position of a steel frame member according to any one of the second to fourth aspects, the laser level and the scale plate are provided with a magnet attraction portion, It is characterized by being detachable from

[0021]

Embodiments and Examples of the Invention A method for measuring a erection position of a steel member according to the first aspect of the present invention is described below.
The present invention is preferably implemented as a method for measuring the position of a steel frame member when constructing a dome roof frame with no support.

First, an embodiment shown in FIGS. 1 to 4 will be described with respect to an installation position measuring apparatus for a steel frame member according to the second to fifth aspects of the present invention.

As shown in FIGS. 1 and 2, the position measuring device according to the present invention uses a laser beam on the tip of the steel member 1 positioned and built first in each layer (the second layer in FIG. 1). Level 2 is provided, and a laser beam 3 is irradiated in the horizontal direction. A scale plate 5 and a television camera 7 for collimating the scale 6 of the scale plate 5 are installed at the tip of each steel frame member 4 to be built thereafter (see FIG. 3), and the scale captured by the television camera 7 Monitor screen 8 for displaying the image of board 5
(See FIG. 4) is a configuration in which the operator's seat of the operator 10 of the crane 9 and the work position of the steel member 4 in the vicinity of the worker 11 are installed (the invention according to claim 2). It is convenient to make the monitor screen 8 near the worker 11 portable.

As shown in FIG. 3, one example of the scale plate 5 is shown in FIG.
When the TV camera 7 and the television camera 7 are integrated into a structure that does not block the irradiation of the laser beam 3 to the scale 6, a highly convenient configuration is obtained.

In order to make the configuration capable of measuring with higher accuracy, the laser beam 3 emitted from the laser level 2 is used.
In this case, an infrared laser beam that is hardly scattered even if it is spread over a long distance is suitably employed. In order to capture the infrared laser light, a CCD camera with a low-frequency light transmission filter is used as the television camera 7. The scale 6 of the scale plate 5 is displayed in red. As a result, the irradiation position 3a of the infrared laser light and the scale 6 are displayed more clearly on the monitor screen 8 than the surrounding image (the invention according to claim 3).

If the television camera 7 employs a wireless television camera for wirelessly transmitting photographed video data to a monitor main body (not shown), there is no obstructive device connection cord, and the installation work can be performed more efficiently. (Claim 4
Described invention).

The scale plate 5 illustrated in FIG. 3 is provided with magnet attracting portions 12 at four corners on the back surface thereof.
It is supposed to be removable. Although illustration is omitted, if a similar magnet attracting portion is provided also on the laser level 2, the laser level 2 can be detachably attached to the steel frame member 1, contributing to further improvement of the work efficiency of the erection work (the invention according to claim 5). ).

Next, a method for measuring the installation position of a steel frame member according to the first aspect of the present invention, which is performed by using the above-described installation position measuring device, will be described.

In the embodiment shown in FIG. 1 and FIG. 2, the ring-shaped structure A of the first layer has already been formed.
The stage which comprises the ring-shaped structure of a layer is shown.

A laser level 2 is set at the tip of a steel member 1 to be positioned and built at the beginning of the layer, and a laser beam 3 is emitted from the laser level 2 in a horizontal direction in a radial plane.

In order to position and build the first steel member 1 described above, for example, as described in the above-mentioned prior art (1), a surveying technician performs three-dimensional surveying using swinging down, transit, level, and the like. Implement the most basic method of measuring the installation position of steel members. Since only one measurement is required, there is little adverse effect on the progress of construction.

A scale plate 5 and a television camera 7 for collimating the scale 6 of the scale plate 5 are previously installed at the tip of each steel frame member 4 to be built thereafter (see FIG. 3).

Therefore, the operator 10 of the crane 9 and the worker 11 at the erection work position can move the scale 11 on the monitor screen 8 captured by the television camera 7 as shown in an example in FIG. Laser beam linear irradiation position 3
After confirming a, each other is signaled to perform vertical alignment (and, if necessary, horizontal alignment as in the following embodiment of FIG. 5) to proceed with the work of building each steel frame member 4. Construct a ring-shaped structure of layers. Hereinafter, a ring-shaped structure of each level is sequentially constructed, and a dome roof frame is constructed.

In the horizontal alignment of the steel member 4, for example, in a general bolting method, the horizontal position of the steel member 4 is usually set within an allowable error range at the temporary fixing stage of the steel member 4. Often not a problem.

FIG. 5 shows a preferred embodiment in which horizontal alignment of the steel member 4 is also required.

That is, in the embodiment shown in FIG. 1 and FIG. 2, a laser beam 3 radiated from the laser level 2 installed on the steel frame member 1 which is first positioned and erected in a horizontal plane in a normal horizontal direction. Is stopped at the design direction position of each steel frame member 4 to be built thereafter, so that the irradiation position 3a of the laser beam 3 appears in a dot-like manner, and horizontal alignment can be performed. As shown in FIG. 6, horizontal positioning is performed so that the dot-like irradiation position 3a of the laser beam 3 is on the axis of the scale 6 on the monitor screen 8, and the vertical positioning is described above. The work of setting each steel frame member 4 is performed in the same manner as in the embodiment of FIGS. 1 and 2.

[0037]

According to the method and apparatus for measuring a erection position of a steel member according to the first to fifth aspects of the present invention, the workability and the construction of a dome roof frame without support can be improved. Advantages such as economical efficiency can be utilized. In other words, the operator of the crane and the worker at the work position for installing the steel frame member can commonly and directly check the installation position of the steel frame member on the monitor screen, and the correlation between the image on the monitor screen and the building work. Since the workability can be easily recognized, the construction work of the steel frame member can be efficiently performed, which contributes to shortening of the construction period and can be economically performed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an embodiment of the present invention.

FIG. 2 is an elevation view of FIG.

FIG. 3 is a perspective view showing an example of a configuration of a scale plate.

FIG. 4 is a diagram showing an example of a monitor screen display in the embodiment shown in FIGS. 1 and 2.

FIG. 5 is a schematic plan view showing different embodiments of the present invention in plan view.

FIG. 6 is a diagram showing an example of a monitor screen display in the embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel member 2 Laser level 3 Laser beam 4 Steel member 5 Scale plate 6 Scale 7 TV camera 8 Monitor screen 9 Crane 10 Crane operator 11 Worker at construction work position 3a Laser irradiation position 12 Magnet adsorption part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hidetoshi Hayashida 1-5-1, Otsuka, Inzai City, Chiba Prefecture Inside the Technical Research Institute, Takenaka Corporation (72) Inventor Hideo Oka 1-5-1, Otsuka, Inzai City, Chiba Prefecture Inside Takenaka Corporation Technical Research Institute (72) Inventor Kenichi Miyazaki 1-5-1, Otsuka, Inzai-shi, Chiba Prefecture Inside Technical Research Center Takenaka Corporation (72) Inventor Daisaku Sozo Otsuka 5-chome, Inzai City, Chiba Prefecture Address 1 Inside Takenaka Corporation Technical Research Institute

Claims (5)

[Claims] 1. A method for measuring the position of a steel member when constructing a dome roof frame without support, comprising: Installing, irradiating the laser light in the horizontal direction from the laser level, installing a scale plate and a television camera to collimate the scale portion of the scale plate at the tip of each steel frame member to be subsequently built, A monitor screen that displays an image of the scale plate captured by the television camera is installed so that the operator of the crane and the worker at the installation work position of the steel frame member can view the monitor screen. A method for measuring the position of a steel frame member, comprising checking an irradiation position of a laser beam on a scale plate in an image, performing alignment, and proceeding with a work of building each steel frame member. 2. An apparatus for measuring the position of a steel member when constructing a dome roof frame without any support, comprising: A laser level for irradiating light in the horizontal direction, a scale plate installed at the tip of each steel frame member to be built thereafter, a television camera for collimating the scale portion of the scale plate, and a scale captured by the television camera A monitor screen for displaying an image of the plate, wherein the monitor screen is installed at a position where the operator of the crane and the worker at the installation position of the steel frame member can be viewed respectively. Position measurement device. 3. The laser beam emitted from the laser level is an infrared laser beam, the television camera for collimating the scale portion of the scale plate is a CCD camera with a low-frequency light transmission filter, and the scale of the scale plate is red. The installation position measuring device for a steel frame member according to claim 2, characterized by: 4. The steel member according to claim 2, wherein the television camera for collimating the scale portion of the scale plate is a wireless television camera for transmitting photographed video data to the monitor body by radio. Built-in position measuring device. 5. The steel frame member according to claim 2, wherein a magnet attraction portion is provided on the laser level and the scale plate and is detachable from the steel frame member. Standing position measuring device.