JPH06147896A - Erection measuring system for steel column - Google Patents

Abstract

PURPOSE:To facilitate the measurement of verticality at the time of erection of steel column. CONSTITUTION:The erection measuring system comprises a steel colum 8 being erected at a predetermined floor M, a laser oscillator 11 installed at a design coordinate position of the steel column 8, a light receiver 12 fixed detachably to the vicinity of the head part of the steel column 8, and an operation confirming unit 15 connected through a communication cable 13 with the light receiving unit 12. The light receiving unit 12 receives a laser beam R emitted from the laser oscillator 11 and the operation confirming unit 15 operates a shifting amount of the head part of the steel column 8 from the design coordinate position which is then displayed on a LED display or notified by means of a buzzer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measuring system applied to a steel column erection work in a steel frame construction work ranging from low-rise to high-rise buildings.

[0002]

2. Description of the Related Art Conventionally, in the construction work of steel frames such as high-rise buildings, a standard allowable error is determined by the Japan Society of Architectural Science and Steel Frame Accuracy Inspection Standard for the collapse of steel columns. Therefore, for the work to install the columns to construct the steel columns vertically, install plumb bobs or vertical mounts on the steel column heads, measure and correct the dimensions of the steel column heads and legs, and It is measured by two transits installed at right angles.

However, among the above-mentioned conventional methods, the method of using a plumb bob or a vertical mount has a limit to the height at which measurement can be performed, which is difficult in a high-rise building, and is difficult for human and work. Takes time,
There is a problem that the measurement accuracy is poor because it is affected by wind and the like.

Further, in the method using the above two transits, in order to measure the opponent who is moving by the transit, experience is required and the error of the surveyor becomes a problem. Since transit measurement is performed at each progress stage such as final tightening, there is a problem that the work is complicated, and the worker and the surveyor who construct the steel column are verbally instructed and confirmed to proceed with the work. It has the problem of getting used to it.

Further, in the case of a high-rise building, since it is necessary to change the reference point, which is a known coordinate on the ground, upward for each node (height of about the third floor), a cumulative error occurs and the reliability of the measurement accuracy is increased. There is a problem that the property deteriorates.

In order to solve the above-mentioned problems, the present inventor has disclosed in Japanese Patent Laid-Open No. 4-69515 that a laser measuring instrument and a microcomputer are combined in place of the measuring method using two transits to measure the verticality of a steel column. We are proposing a measurement system that enables high precision and labor saving.

Explaining this with reference to FIG. 7, a rotary base 1 and a laser oscillator 2 are installed at two reference points on a reference floor L, and a photoreceiver 3 and an arithmetic process are provided on the building floor M facing the laser oscillator 2. The device 4 is installed. The turntable 1 corrects the measurement accuracy in the vertical direction. The light receiver 3 searches the trajectory of the laser light R to calculate measurement parameters such as the fluctuation width, the brightness of the laser light, and the measurement area, and outputs the calculated measurement parameters to the arithmetic processing unit 4. The arithmetic processing unit 4 includes the light receiver 3
Position data of the laser beam R from
Analysis such as center of gravity calculation is performed, and the known coordinates of the reference point of the reference floor L and the position coordinates of the building floor M received by the light receiver 3 are compared, and the deviation between the known coordinates in the X and Y directions is displayed on the screen. And output to the printer. Based on the result, the installation correction of the steel frame pillar is performed, and the reference point set in the reference floor L is moved to the installation floor M (measurement 1).

Next, in the building floor M, the mirror 5 is installed at the position of the two light receivers 3 and the three-dimensional surveying device 6 is installed at an arbitrary position, and the three-dimensional surveying device 6 is connected to the personal computer 7. To do. In the personal computer 7, the coordinates of the reference point and the set coordinates of the steel column are stored in advance. By collimating the mirror 5 with the three-dimensional surveying device 6, the building floor M
The position of the three-dimensional surveying device 6 is calculated by the personal computer 7 from the reference point of (measurement 2). Next, the mirror 9 is set on the steel column 8 and collimated by the three-dimensional surveying device 6 to measure the coordinate value of the steel column 8 (measurement 3). The measurement data is displayed on the personal computer 7, and the verticality of the steel column 8 can be corrected based on this.

[0009]

However, in the method disclosed in Japanese Patent Laid-Open No. 4-69515, when the verticality of the steel column 8 is corrected, for example, when the steel column 8 is moved in the X direction, Misalignment occurs, and when the misalignment in the Y direction is corrected, this time, the misalignment occurs in the X direction, and this correction needs to be performed several times. Each time, the three-dimensional surveying device 6 collimates the mirror 9 and the steel column 8 There is a problem that it takes time for the construction work because the position of must be measured.

Further, there is a problem that the work of attaching the mirror 9 to the steel column 8 is a high place work, and the three-dimensional surveying device 6 needs to be moved depending on the position of the steel column 8 to be measured. However, there is a problem that it takes time to accurately attach the mirror 9 toward the three-dimensional surveying device 6.

The present invention solves the above problems, and an object of the present invention is to provide an installation measuring system for a steel column which can easily measure the verticality during an installation operation of the steel column. .

[0012]

To this end, the steel column post installation measuring system according to the present invention is provided with a steel post 8 installed on a building floor M, and a laser oscillator installed at a design coordinate position of the steel post 8. 11, a light receiver 12 that is detachably fixed near the head of the steel column 8, a light receiver 12, and a communication cable 13
The laser beam R from the laser oscillator 11 is detected by the light receiver 12, and the amount of deviation from the design coordinate position of the head of the steel column 8 is calculated in the arithmetic operation confirmation device 15. Is displayed or notified. As an example of the calculation confirmation device 15, the deviation amount is displayed by a liquid crystal display and an LED display, and the deviation amount is notified by a buzzer sound. It should be noted that the numbers added to the above-mentioned configurations are for comparison with the drawings in order to facilitate the understanding of the present invention, and the configurations of the present invention are not limited thereby.

[0013]

In the present invention, for example, as shown in FIG.
After fixing the light receiver 12 to a predetermined position near the head of the steel column 8 placed on the ground before installation and fixing the laser oscillator 11 to the marking position (design coordinate position) of the steel column 8, with a crane. The calculation confirmation device 15 is connected to the communication cable 13 of the steel column 8 that has been suspended and moved to the building location. The steel column 8 is displayed on the LED display section 19 and the liquid crystal display section 20 of the calculation confirmation device 15.
The position of the pillar head is automatically displayed, and the center position is notified by a buzzer sound. Based on this, the worker tightens the bolts between the upper and lower pillars according to how the steel pillar 8 falls. The work and the work of attaching the beam are performed, and when the building position is determined, the work of welding the upper and lower steel frame columns 8 and the beam welding work of FIG. 5 are performed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 and FIG. 2 show an embodiment of a steel frame column installation measuring system of the present invention, FIG. 1 is a perspective view showing the entire measuring system, and FIG. 2 is an enlarged perspective view of FIG. 1 showing a configuration relating to the present invention. Is.

In FIG. 1, two reference points on the reference floor L are
A rotary base 1 and a laser oscillator 2 are installed, and a photoreceiver 3 and an arithmetic processing unit 4 are installed on the building floor M so as to face the laser oscillator 2. The rotary table 1 is for correcting the measurement accuracy in the vertical direction, and even if the emission position of the laser light R from the laser oscillator 2 is deviated from a predetermined position, and the laser light R is in a long distance. Even if it deviates from the true vertical line, it is possible to determine the true measurement position in the vertical direction in, for example, the X direction and the Y direction by automatically rotating the rotary table 1 once, or in some cases, two or more rotations. Is.

The light receiver 3 is composed of a photodiode matrix for position detection in the X and Y directions, and by searching the locus of the laser light R for a predetermined time, the fluctuation width, the brightness of the laser light, the measurement area, etc. Calculate the measurement parameters of
Output to the arithmetic processing unit 4. The arithmetic processing unit 4 receives the position data of the laser light R from the light receiver 3, analyzes the data processing, the center of gravity, etc., and calculates the known coordinates of the reference point of the reference floor L and the data received by the light receiver 3. The positional coordinates of the floor M are compared with each other, and the deviation from the known coordinates in the X and Y directions is displayed on the screen and output to the printer. Based on the result, the steel pillar is installed and corrected, and the reference point set in the reference floor L is moved to the installation floor M.

On the building floor M, a mirror 5 is installed at the positions of the two light receivers 3 and a three-dimensional surveying device 6 is installed at an arbitrary position, and a personal computer 7 is connected to the three-dimensional surveying device 6. To be done. The personal computer 7 stores in advance the coordinates of the reference point and the design coordinate position (marked-out position) of the steel column. By collimating the mirror 5 with the three-dimensional surveying device 6, the position of the three-dimensional surveying device 6 is calculated by the personal computer 7 from the reference point of the building floor M.

The above-mentioned method of moving the reference point is similar to the method according to the above-mentioned Japanese Patent Laid-Open No. 4-69515, and in the case of a high-rise building in particular, the conventional method of changing the reference point upward for each node. Although it has an advantage that it can measure up to 500 m and does not cause a cumulative error, it is not always an essential constituent element in the present invention, and in the case of a low-rise building, a plumb bob or a vertical mount is required. You may make it move a reference point using.

1 and 2, the configuration required for the system of the present invention includes a laser oscillator 11 installed on a building floor M, a photodetector 12 for receiving a laser beam R from the laser oscillator 11, and a photodetector. And a calculation confirmation device 15 which can be connected to the device 12 by a communication cable 13.

The laser oscillator 11 is provided with an automatic leveling correction mechanism and is installed in the opening of the base member 16.
The opening of the base member 16 is fixed along a cross line 17 indicating the marking position (design coordinate position) of the building floor M, so that the axis of the laser beam R and the intersection of the cross line 17 can be easily matched. There is.

The light receiver 12 detects the laser light R from the laser oscillator 11 as a point on a two-dimensional coordinate, and is a structure in which photodiode elements are arranged in a matrix of 80 × 80 mm. It can be detachably fixed by a magnet near the part. Similarly, the communication cable 13 and the calculation confirmation device 15 can be detachably fixed by a magnet.

As shown in FIG.
So that you can see the measurement results in real time during the construction work,
L consisting of 16 x 16 light emitting diodes each with 2 mm
The LED display unit 19 includes an ED display unit 19, a liquid crystal display unit 20 that numerically displays the deviations in the X and Y directions, an operation button 21, and a built-in battery. The LED display unit 19 includes the marking position (design coordinate position). When the laser light enters within ± 16 mm in the XY directions centering on, the position is displayed and the operator can be notified by a buzzer sound. If the buzzer sound falls within an error range (within approximately ± 2 mm) from the center of the buzzer sound, for example, it is changed from an intermittent sound to a continuous sound to facilitate confirmation.

As shown in FIG. 4, the measurement data of the arithmetic processing device 4, the three-dimensional surveying device 6 and the arithmetic operation confirmation device 15 are:
It is input to the computer 23 of the office by the floppy disk 22 or directly, and the plotter 2 for measurement result plotting
4. Output to the measurement result list creation printer 25.

Next, the construction work using the construction measurement system for steel columns of the present invention will be described.

[Preparation work] The light receiver 12 is fixed with a magnet at a predetermined position near the pillar head of the steel column 8 placed on the ground before the installation (instruction line is drawn at the time of factory production), and at the same time. The cable 13 is also fixed by a magnet along the steel column 8. Usually, the light receiver 12 is attached to each of the steel columns corresponding to the number of one-time building.

A mirror is installed near the marking position (design coordinate position), and the mirror is collimated by the three-dimensional surveying device 6,
The stake out position is confirmed by the personal computer 7, and a cross line 17 is drawn at the position.

The base member 16 based on the cross line 17
Is fixed, and the laser oscillator 11 is fixed in accordance with the opening of the base member 16.

The operation confirmation device 15 is connected to the communication cable 13 of the steel frame column 8 which is hung by the crane and moved to the building site.

[Measurement work] The LED display unit 19 and the liquid crystal display unit 2 of the calculation confirmation device 15
At 0, the position of the stigma of the steel column 8 is automatically displayed, and the center position is informed by a buzzer sound. Based on this, the operator can move the upper and lower columns according to the degree of fall of the steel column 8. The bolts between them are tightened, and when the installation position is determined, the welding work of the upper and lower steel frame columns 8 and the work of attaching the beams are performed.

A device for confirming the calculation of the measurement result as necessary 1
The measurement result is stored in the memory built in 5, and the stored measurement result is printed out by connecting the calculation confirmation device 15 to the printer placed in the office.

After the steel column 8 is welded, an error may occur in the position of the column head due to welding distortion or the like. Therefore, the deviation amount is measured by the calculation confirmation device 15, and the deviation amount is set up for the next steel column. Sometimes input to the calculation confirmation device 15. As a result, all stigmatic positions can be measured with high accuracy at a constant reference coordinate.

5 and 6 show another embodiment of the present invention, FIG. 5 is an overall perspective view, and FIG. 6 is a view showing a display screen of a personal computer. In the above embodiment, the steel columns 8 are erected one by one, but in this embodiment, as shown in FIG. 5, the beam 26 and the four steel columns S1 to S are provided.
4 are connected by temporary fastening, and four steel columns S1 to S
We are building 4 at the same time. The laser oscillator 11, the light receiver 12, the communication cable 13, and the calculation confirmation device 15 described above are connected to each of the four steel columns S1 to S4, and each calculation confirmation device 15 includes a connector 27.
It is connected to the personal computer 29 via.

Explaining the construction work of this embodiment, as shown in FIG. 6, the shift amounts in the XY directions of the steel columns S1 to S4 are displayed on the right side of the display screen of the personal computer 27, and the steel frames are displayed on the left side. The design coordinate positions of the pillars S1 to S4 are indicated by solid lines and the current positions are indicated by dotted lines, and the worker adjusts the loosening or tightening of the temporary tightening of the beam 26 so that the dotted line portions overlap the solid lines. By doing so, it is possible to easily carry out construction work.

[0034]

As is apparent from the above description, the present invention has the following effects.

Conventionally, in order to secure a predetermined position for the installation of a steel column, it has been a troublesome work to perform re-distortion in the XY directions repeatedly and to repeat the measurement at each time, but in the present invention, Means that the worker can change the position coordinates of the stigma at once in real time and
It is possible to easily carry out the installation work while confirming the falling condition of the steel column with the D display and the buzzer sound.

When a conventional transit or optical vertical instrument is used, the measurement is performed by two or three persons, but in the present invention, the XY coordinates can be measured by one person, so that one person can easily perform the measurement. be able to.

Conventionally, when constructing a steel column at a predetermined position, scales are installed in the XY directions of the column head because of work at a high place where a mirror is attached to the column head or because the indicator line of the column head position cannot be seen. In many cases, this involves work at a high place such as hitting, but in the present invention, the work of attaching the photoreceiver can be performed at a safe place on the ground, and therefore work at a high place is relieved.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of a steel column construction measurement system of the present invention,

FIG. 2 is an enlarged perspective view of FIG. 1 showing the configuration of the present invention.

FIG. 3 is a perspective view of a calculation confirmation device according to the present invention.

FIG. 4 is a conceptual diagram for explaining the flow of measurement data in the present invention.

FIG. 5 is an overall perspective view showing another embodiment of the present invention.

6 is a diagram showing a display screen of the personal computer in FIG.

[Fig. 7] Fig. 7 is a perspective view showing an example of a conventional steel-column post-installation measuring system.

[Explanation of symbols]

M: Building floor, 8 ... Steel column, 11 ... Laser oscillator, 12
... light receiver 13 ... communication cable, 15 ... calculation confirmation device, 19 ... LE
D display unit 20 ... Liquid crystal display unit

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Nobuhiro Okuyama 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Masaaki Nakanishi 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Within the corporation

Claims (3)

[Claims] 1. A steel frame column installed on a building floor, a laser oscillator installed at a design coordinate position of the steel frame column, and a light receiver detachably fixed near the column head of the steel frame column. The light receiving device and a calculation confirmation device connected via a communication cable are provided, and the laser light from the laser oscillator is detected by the light receiving device, and in the calculation confirmation device, from the design coordinate position of the stigma of the steel column. An installation measuring system for steel columns, which displays or informs the amount of deviation. 2. The operation confirmation device comprises a liquid crystal display and LE.
The installation measuring system for a steel column according to claim 1, wherein the displacement amount is displayed by D display. 3. The system for measuring the installation of a steel column according to claim 1, wherein the calculation confirmation device notifies the amount of deviation by a buzzer sound.