JP5724236B2 - Method for setting virtual line parallel to core line of construction member, pair of virtual line setting jig for setting virtual line, and installation method for installing linearity measuring device on construction member - Google Patents

Description

  The present invention relates to a method for setting a virtual line parallel to the core wire of a construction member, a pair of virtual line setting jigs for setting the virtual lines, and a linearity measuring device for construction using the jigs It is related with the installation method installed in a member.

  Conventionally, at a construction site, when connecting a column such as a new steel pipe to an existing column, the vertical accuracy of the new column is measured. For example, in Patent Document 1, a vertical accuracy measuring jig including a bracket that can be attached to and detached from a side surface of a column and a support base / target that is provided so as to protrude to the side of the bracket is provided. A method of measuring the vertical accuracy by attaching to each of the columns and the side surfaces of the new column is disclosed. In this method, after installing a vertical accuracy measuring instrument on the upper surface of the support and target of the vertical accuracy measuring jig attached to the existing pillar, the vertical accuracy attached to the new pillar with this vertical accuracy measuring instrument. The vertical accuracy of the new column is calculated by measuring the coordinates of the lower surface of the support / target of the measuring jig.

JP-A-9-203210

However, the vertical accuracy measuring method described in Patent Document 1 described above has the following problems.
The thickness of commercially available steel pipes that are generally used as pillars is within the range specified by JIS, etc., but in many cases, the thickness is partially thickened or thinned, and the thickness is uniform. It is almost never.
Therefore, for example, as shown in FIG. 28, when the marks M and N are provided at positions spaced apart by a predetermined distance in the radial direction from the outer peripheral surface of the upper end and the outer peripheral surface of the lower end, respectively, It is rare that the distance L1 from the member core 100 to the mark M and the distance L2 from the member core 101 on the lower end surface of the steel pipe to the mark N coincide with each other. That is, it is rare that the core line CL of the steel pipe and the virtual line MN between the marks M and N are parallel.
Therefore, when a new steel pipe is connected along the virtual line MN between these marks M and N, the core lines CL of the continuous steel pipes may not match each other.

  Therefore, the present invention has been made in view of the above problems, a setting method capable of accurately setting a virtual line parallel to the core wire of a construction member, and a pair for setting this virtual line. It is an object of the present invention to provide a virtual line setting jig and an installation method for installing a linearity measuring device on a construction member using the jig.

The present invention is a method for setting an imaginary line parallel to a core line of a construction member that is a column or a beam ,
When the construction member is manufactured, a first reference point is provided to provide a first reference point at a position separated from a member core set on one end surface of the construction member by a predetermined distance in a predetermined direction within the end surface. Process,
A second reference point installation step of providing a second reference point at a position separated from the member core set on the other end surface of the construction member by the predetermined distance in the same direction as the predetermined direction in the end surface;
A virtual line that sets a virtual line connecting the first reference point and the second reference point by irradiating light from the light irradiator installed at the position of the first reference point toward the second reference point. A setting process;
With
In the first reference point installation step,
A scoring step of marking a scribing line on one end face of the construction member to indicate the direction for setting the virtual line;
A mark for a base point indicating a position to be a base point, a mark for the first reference point indicating a position separated from the base point by the predetermined distance , and a mark for a direction for indicating the direction of the first reference point with respect to the base point The reference mark for the base point and the mark for the direction are shown, the abutting portion whose outer dimension is aligned with one end surface of the construction member, and the mark for the first reference point is shown. Using a first plate having an extending portion extending from the contact portion, and abutting the contact portion of the first plate with one end surface of the construction member according to the outer periphery;
A mark position confirmation step of adjusting the position of the first plate so that the position of the direction mark coincides with the position of the ruled line;
By performing, the first plate such that said base point for mark coincides with the position of said member core which is set on one end surface of the construction member, is brought into contact with one end surface of the construction member ,
In the second reference point installation step,
A mark for a base point indicating a position to be a base point, a mark for the second reference point indicating a position separated from the base point by the predetermined distance , and a mark for a direction for indicating the direction of the second reference point with respect to the base point The reference mark for the base point and the mark for the direction are shown, the abutting portion whose outer dimension is matched with the other end surface of the construction member, and the mark for the second reference point is shown. Using a second plate having an extending portion extending from the contact portion, and bringing the contact portion of the second plate into contact with the other end surface of the construction member with the outer periphery aligned with each other;
A mark position confirmation step of adjusting the position of the second plate so that the position of the direction mark coincides with the position of the ruled line;
By performing the above, the second plate is brought into contact with the other end surface of the construction member so that the mark for the base point coincides with the position of the member core set on the other end surface of the construction member. It is characterized by that.

Further, the present invention is an installation method for installing a linearity measuring device on the construction member using a pair of virtual line setting jigs for setting a virtual line parallel to the core wire of the construction member,
The virtual line setting jig is
A base point mark indicating a base point position, a reference point mark indicating a position away from the base point by a predetermined distance in a predetermined direction, and a direction mark for indicating the direction of the reference point with respect to the base point are shown. A detachable member attachable to and detachable from an end surface of the construction member;
A fixing member capable of fixing the detachable member to an end surface of the construction member;
With
A scoring step of marking a scoring line for indicating the direction of setting the virtual line on both end faces of the construction member;
An installation step of installing the pair of virtual line setting jigs on both end faces of the construction member;
A mark position confirmation step for adjusting the positions of the pair of virtual line setting jigs so that the position of the direction mark of the pair of virtual line setting jigs matches the position of the ruled line;
A light irradiator is installed at the position of the reference point mark of the one virtual line setting jig, and the position of the irradiated light is changed to the position of the reference point mark of the other virtual line setting jig. A baseline setting process to match
An imaging means installation step of arranging an imaging means capable of imaging the reference point mark of both of the pair of virtual line setting jigs on the base line;
A target installation step of installing a target at the position of the reference point mark of the one virtual line setting jig;
It is characterized by providing.

Further, the present invention is an installation method for installing a linearity measuring device on the construction member using a pair of virtual line setting jigs for setting a virtual line parallel to the core wire of the construction member,
The virtual line setting jig is
A base point mark indicating a base point position, a reference point mark indicating a position away from the base point by a predetermined distance in a predetermined direction, and a direction mark for indicating the direction of the reference point with respect to the base point are shown. A detachable member attachable to and detachable from an end surface of the construction member;
A fixing member capable of fixing the detachable member to an end surface of the construction member;
With
A scoring step of marking a scoring line for indicating the direction of setting the virtual line on both end faces of the construction member;
An installation step of installing the pair of virtual line setting jigs on both end faces of the construction member;
A mark position confirmation step for adjusting the positions of the pair of virtual line setting jigs so that the position of the direction mark of the pair of virtual line setting jigs matches the position of the ruled line;
A light irradiator is installed at the position of the reference point mark of the one virtual line setting jig, and the position of the irradiated light is changed to the position of the reference point mark of the other virtual line setting jig. A baseline setting process to match
A target installation step of installing a target at the position of the reference point mark of the other virtual line setting jig;
It is characterized by providing.

  According to the present invention, a setting method capable of accurately setting a virtual line parallel to the core wire of a construction member, a pair of virtual line setting jigs for setting the virtual lines, and the jigs The installation method which installs a linearity measuring apparatus in a construction member using can be provided.

(A) is a figure which shows the camera unit of the linearity measurement system concerning 1st embodiment of this invention, (b) is a figure which shows the target for systems. It is a flowchart which shows the procedure which attaches a camera unit and the system target to a steel pipe. It is a top view which shows the state which wrote the ruled line on the end surface of a steel pipe. (A) is a top view of a template, (b) is an AA arrow line view of (a). (A) is a top view which shows the state which installed the template in the end surface of a steel pipe, (b) is a BB arrow line view of (a). It is a perspective view which shows the state which installed the upper end side template and the lower end side template in the steel pipe. It is a perspective view which shows the state which installed the laser irradiation machine in the upper end side template, and irradiated the laser. It is a perspective view which shows the state which installed the laser irradiation device in the lower end side template, and irradiated the laser. It is a perspective view which shows the state which installed the camera unit in the steel pipe. It is a flowchart which shows the procedure which connects a new steel pipe to the existing steel pipe. It is a figure which shows the state which installed the target for systems in the new steel pipe. It is a perspective view which shows the state which connected the new steel pipe to the existing steel pipe. It is a perspective view which shows the state which installed the linearity measurement system concerning 2nd embodiment of this invention in the steel pipe. It is a figure which shows a light-receiving plate. It is a flowchart which shows the procedure which attaches a laser irradiation machine and a light-receiving plate to a steel pipe. It is a flowchart which shows the procedure which connects a new steel pipe to the existing steel pipe. It is a figure which shows the state which installed the light-receiving plate in the new steel pipe. It is a figure which shows the operation | work content of the steel pipe position confirmation process which confirms the position of the connected new steel pipe. It is a perspective view which shows the state which installed the linearity measuring system concerning 3rd embodiment of this invention in H-shaped steel. It is a flowchart which shows the procedure which attaches a camera unit and the system target to a steel pipe. It is a top view which shows the state which wrote the member core and the ruled line on the end surface of H-shaped steel. It is a figure for demonstrating the detection method of a member core. It is a top view of a template. It is a perspective view which shows the state which installed the template in the both ends of H-shaped steel. It is a perspective view which shows the state which installed the linearity measurement system concerning 4th embodiment of this invention in the steel pipe. It is a top view which shows the state which marked the ruled line on the end surface of a square-shaped steel pipe. It is a top view of a template. It is a figure which shows the setting method of the virtual line of a steel pipe.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, in the following description, the case where a new type steel is connected in the narrow vertical shaft with the existing type steel installed in the desired position is demonstrated.

--- <About the first embodiment> ---
FIG. 1A is a view showing a camera unit 11 of the linearity measurement system 10 according to the first embodiment of the present invention, and FIG. 1B is a view showing a system target 16.

  As shown in the figure, the linearity measurement system 10 includes a camera unit 11 (product name: Jeppie, manufactured by Soki Corporation) capable of imaging the front and rear, and a system target 16.

The camera unit 11 includes a camera unit main body 12, an imaging device 13, an illumination 14, and a camera target 15.
The camera unit main body 12 includes a gantry 121 for mounting each device and a magnet 122 attached to the gantry 121, and can be attached to and detached from the outer periphery of the round steel pipe 3.
The imaging device 13 is mounted on the camera unit body 12 and includes a front camera 131 and a rear camera 132 so that the system target 16 disposed in front of and behind the camera unit 11 can be imaged. Yes. The system target 16 is imaged by these cameras 131 and 132, and the three-dimensional coordinates of the system target 16 are calculated from the captured data.
The illumination 14 is provided with a plurality of LEDs around each of the cameras 131 and 132 so that the system target 16 can be imaged even in a dark environment.
The camera target 15 includes a front reflecting mirror 151 and a rear reflecting mirror 152.
The front reflecting mirrors 151 are provided on both sides of the front camera 131, respectively, and the distance between the reflecting mirrors 151 is arranged to be a predetermined length set in advance.
The rear reflecting mirrors 152 are provided on both sides of the rear camera 132, and the distance between the two reflecting mirrors 152 is set to the predetermined length in the same manner as the front reflecting mirror 151. .
By providing the camera target 15, the position of the camera unit 11 can be confirmed also from the front side and the rear side of the camera unit 11.

The system target 16 includes a plate-like member 162 having a magnet 161 and a reflecting mirror 163.
Two reflecting mirrors 163 are attached to one side surface of the plate-like member 162, and the distance between the reflecting mirrors 163 is the same as the distance between the front reflecting mirrors 151 of the camera target 15 and the predetermined length. Is set to

  An attachment method for attaching the camera unit 11 and the system target 16 to the steel pipe 3 will be described below.

  In the following description, it is assumed that the steel pipe 3 is suspended by a crane (not shown) installed on the top of the shaft 6 while being inclined obliquely with respect to a vertical axis parallel to the direction of gravity. .

<Attaching Method of Camera Unit 11 and System Target 16>
FIG. 2 is a flowchart showing a procedure for attaching the camera unit 11 and the system target 16 to the steel pipe 3.
As shown in the figure, the process from the scoring step S10 to the system target installation step S80 is performed. A specific method will be described below according to the construction procedure.

First, a ruled writing step S10 is performed.
FIG. 3 is a plan view showing a state in which ruled lines 31 are marked on the end face of the steel pipe 3.
As shown in the figure, in the scoring step S10, a scoring line 31 is formed at a position where an imaginary line passing in the north-south direction through the member core 32 set when the steel pipe 3 is manufactured intersects with the end surface of the steel pipe 3. I write. Although the virtual line and the end surface of the steel pipe 3 intersect at two places, a ruled line 31 is marked on at least one of them.
In this embodiment, the virtual line passes in the north-south direction. However, the virtual line is not limited to this direction, and may be the east-west direction or the direction determined by design or the like.

Next, template production process S20 is implemented.
4A is a plan view of the template 20, and FIG. 4B is a view taken along the line AA in FIG.
As shown in the figure, in the template manufacturing step S20, two templates 20 to be attached to the upper end surface and the lower end surface of the steel pipe 3 are manufactured.
Each template 20 includes a transparent disk-shaped plate (hereinafter referred to as a circular plate) 21, an extending portion 22 attached to a side surface of the circular plate 21, and a fixing portion 23 for fixing the circular plate 21 to the steel pipe 3. And a handle 24.
The circular plate 21 is formed so that its diameter matches the outer diameter of the steel pipe 3, and a center point 211 is described at the center of the circular plate 21. In addition, in this embodiment, in order to insert the wire rope for supporting the steel pipe 3, it was made into the shape which hollowed out the inner part of the circular board 21, However, It is not limited to this shape, A simple disk shape May be used.
The extending portion 22 is provided with two reference points 221a and 221b at positions separated from the center point 211 by a predetermined distance. These reference points 221a and 221b are provided with small holes for passing a laser (described later).
When each template 20 is attached to the upper end surface and the lower end surface of the steel pipe 3, linear marks 212 are provided on the outer peripheral edge of the circular plate 21 so that the orientations of the extended portions 22 can be aligned in the same direction. Have been described.
The fixing portion 23 includes a fan-shaped protrusion 231 protruding in the radial direction of the circular plate 21 and a pin 233.
The pin 233 is installed so as to penetrate the hole 234 formed so as to penetrate the protrusion 231.
Two handles 24 are provided so that they can be operated with both hands.

Next, template setting process S30 is implemented.
Fig.5 (a) is a top view which shows the state which installed the template 20 in the end surface of the steel pipe 3, (b) is a BB arrow line view of (a).
As shown in the figure, in the template installation step S30, the template 20 is attached to the upper end surface and the lower end surface of the steel pipe 3, respectively, and the outer periphery of the circular plate 21 coincides with the outer periphery of the steel pipe 3, and is described in the template 20. The position of the template 20 is adjusted so that the position of the linear mark 212 matches the position of the ruled line 31 described on each end face of the steel pipe 3.

Next, a mark position confirmation step S40 is performed.
In this step, it is confirmed whether or not the position of the linear mark 212 on the template 20 matches the position of the scribe line 31 described on the steel pipe 3. When the position of the mark 212 coincides with the position of the ruled line 31, the position of the center point 211 of the template 20 coincides with the positions of the member cores 32 on the upper end surface and the lower end surface of the steel pipe 3.

  In the mark position confirmation step S40, when the position of the mark 212 coincides with the position of the ruled line 31, the next template fixing step S50 is performed.

In the template fixing step S50, the liner plate 232 is inserted into the gap between the pin 233 of the fixing portion 23 and the steel pipe 3 to fix the template 20 to the steel pipe 3 (see FIG. 5).
In the following description, the templates 20 installed on the upper end surface and the lower end surface of the steel pipe 3 are referred to as an upper end side template 20U and a lower end side template 20D, respectively.

FIG. 6 is a perspective view showing a state in which the upper end template 20U and the lower end template 20D are installed on the steel pipe 3. As shown in FIG. In addition, after this figure, illustration of the fixing | fixed part 23 of each template 20U and 20D is abbreviate | omitted.
As shown in the figure, the reference point 221a of the upper end template 20U and the reference point 221a of the lower end template 20D are provided at positions separated from the member core 32 of the steel pipe 3 by the same distance in the same direction in the radial direction. . Therefore, an imaginary line (hereinafter referred to as a base line a) connecting the reference point 221a of the upper end template 20U and the reference point 221a of the lower end template 20D is parallel to the core line CL connecting the member cores 32 at both ends of the steel pipe 3. .
Also, a virtual line (hereinafter referred to as a base line b) connecting the reference point 221b of the upper end template 20U and the reference point 221b of the lower end template 20D is parallel to the core line CL, similarly to the base line a.

Next, the baseline setting step S60 is performed.
FIG. 7 is a perspective view showing a state in which the laser irradiators 222 and 223 are installed on the upper end template 20U and irradiated with laser.
As shown in the figure, in the baseline setting step S60, a laser irradiator 222 is temporarily placed above the reference point 221a of the upper end template 20U, and the laser is irradiated so as to pass through the hole. At this time, the direction of the laser irradiator 222 is adjusted so that the position where the laser is irradiated coincides with the reference point 221a of the lower end template 20D. And if it corresponds, the laser irradiator 222 will be fixed to the upper end side template 20U.
Further, the laser irradiator 223 is temporarily placed above the reference point 221b of the upper end side template 20U, and the direction of the laser irradiator 223 is adjusted by the same method as described above and fixed to the upper end side template 20U.
Through these operations, the lasers of both laser irradiators 222 and 223 are irradiated on the same straight line as the base lines a and b, respectively.

FIG. 8 is a perspective view showing a state in which laser irradiators 224 and 225 are installed on the lower-end template 20D and irradiated with laser.
As shown in this figure, a laser irradiator 224 is temporarily placed below the reference point 221a of the lower end side template 20D, and the laser is irradiated so as to pass through the hole. At this time, the orientation of the laser irradiator 224 is adjusted so that the position irradiated with the laser coincides with the corresponding reference point 221a of the upper end template 20U. If they match, the laser irradiator 224 is fixed to the lower end template 20D.
Further, a laser irradiator 225 is temporarily placed below the reference point 221b of the lower end side template 20D, and the direction of the laser irradiator 225 is adjusted and fixed to the lower end side template 20D in the same manner as described above.
By these operations, the lasers of both laser irradiators 224 and 225 are irradiated on the same straight line as the base lines a and b, respectively.
Therefore, the laser irradiated from each laser irradiator 222-225 will be irradiated in parallel with respect to the core line CL.

Next, camera unit installation process S70 is implemented.
FIG. 9 is a perspective view showing a state in which the camera unit 11 is installed on the steel pipe 3.
As shown in this figure, in the camera unit installation step S70, the camera unit 11 is installed near the lower end of the steel pipe 3 so that the front side of the camera unit 11 faces upward. At that time, the position of the camera unit 11 is adjusted so that the laser beams from the laser irradiators 222 and 223 installed on the upper-end template 20U irradiate the front reflecting mirror 151, respectively.
Furthermore, the position of the camera unit 11 is adjusted so that the lasers from the laser irradiators 224 and 225 installed on the lower template 20D irradiate the rear reflecting mirror 152, respectively.
By determining the position of the camera unit 11 based on the two base lines a and b, the camera unit 11 is positioned at a predetermined position in the circumferential direction of the steel pipe 3 as compared with the case where the position is determined based on one base line. It becomes possible to install accurately.

  When the camera unit 11 is installed, the reference points 221a and 221b of the upper end side template 20U and the reference points 221a and 221b of the lower end side template 20D are photographed by the imaging device 13 to calculate the respective three-dimensional coordinates, and these three-dimensional coordinates. Formulas A and B of straight lines representing the base lines a and b are calculated based on the coordinates, respectively.

Next, the system target installation step S80 is performed.
In this step, the system target 16 is installed directly below the reference points 221a and 221b of the upper end template 20U. At that time, the two reflecting mirrors 163 attached to the system target 16 are temporarily placed so as to be directly below the reference points 221a and 221b, respectively.
Thereafter, the imaging device 13 captures the positions of these reflecting mirrors 163 to calculate the three-dimensional coordinates, and confirms that they exist on the base lines a and b (that is, straight line expressions A and B).

  When it is confirmed that the system target 16 exists on the base lines a and b, the upper end template 20U and the lower end template 20D are removed from the steel pipe 3.

  By the way, when the position of the mark 212 does not coincide with the position of the ruled line 31 in the mark position confirmation step S40, the upper end side template 20U and the lower end side template 20D are installed at the optimum positions by performing center assignment. To do. After the installation, the template fixing step S50 is performed.

  The above-described scoring step S10 to system target installation step S80 are performed, and the linearity measurement system 10 is installed on all the steel pipes 3.

  In this embodiment, the camera unit 11 is attached to the lower end of the steel pipe 3 and the system target 16 is attached to the upper end of the steel pipe 3. However, the present invention is not limited to this position. May be attached in position. However, it is desirable to install the camera unit 11 and the system target 16 as far apart as possible so that the measurement accuracy is improved. Since the camera unit 11 is used as a camera for confirming the position of the new steel pipe 4, the camera unit 11 is always installed below the system target 16.

  The connection method which connects the new steel pipe 4 to the lower end of the steel pipe 3 provided with the linearity measurement system 10 mentioned above is demonstrated below.

<Connection method for connecting a new steel pipe 4 to an existing steel pipe 3>
FIG. 10 is a flow chart for connecting a new steel pipe 4 to the existing steel pipe 3.
As shown in this figure, the new steel pipe 4 is connected to the existing steel pipe 3 by performing from the new steel pipe target installation step S100 to the steel pipe position confirmation step S300. A specific method will be described below according to the construction procedure.

First, the target installation process S100 for new steel pipes is performed.
In this step, the marking process S10, the template manufacturing process S20, the template setting process S30, the mark position confirmation process S40, the template fixing process S50, and the baseline setting process S60 shown in FIG. By these steps, the ruled line 31 is marked on the new steel pipe 4, the upper end side template 20U and the lower end side template 20D are attached, and the base lines a and b are set.
After that, as shown in FIG. 11, the system target 16 is installed in the new steel pipe 4. At this time, the system target 16 is disposed immediately above the reference points 221a and 221b of the lower end template 20D, and lasers from the laser irradiators 222 and 223 installed on the upper end template 20U irradiate the reflecting mirror 163, respectively. It is installed in the steel pipe 4 while adjusting the position.

  Then, the upper end side template 20U and the lower end side template 20D are removed from the steel pipe 4.

Next, a steel pipe installation step S200 is performed.
FIG. 12 is a perspective view showing a state in which a new steel pipe 4 is connected to the existing steel pipe 3.
As shown in this figure, in the steel pipe installation step S200, the upper end of the new steel pipe 4 is connected to the lower end of the existing steel pipe 3.

Next, steel pipe position confirmation process S300 is implemented.
In this step, the rear camera 132 of the camera unit 11 calculates the three-dimensional coordinates of each reflecting mirror 163 of the system target 16 installed in the new steel pipe 4.
Then, it is confirmed whether or not each reflecting mirror 163 exists on the extension line of the base lines a and b. Even if each reflecting mirror 163 does not exist on the extension line of the base lines a and b, it is assumed that it exists on the extension line of the base lines a and b as long as it is within an error range determined in advance by design or the like. To do.
Here, when the position of the reflecting mirror 163 of the system target 16 does not exist on the extension lines of the base lines a and b or does not exist within the error range, the adjustment for adjusting the position of the new steel pipe 4 is performed. Step S350 is performed, and the position of the system target 16 is moved on the extended lines of the base lines a and b.

  Thus, the new steel pipe 4 is extended under the existing steel pipe 3 by repeatedly performing from the target installation process S100 for new steel pipes to the steel pipe position confirmation process S300.

--- <About Second Embodiment> ---
Next, a second embodiment of the present invention will be described. In the second embodiment, a case where another linearity measurement system 50 is used will be described.

  In the following description, portions corresponding to the first embodiment are denoted by the same reference numerals, description thereof is omitted, and differences are mainly described.

  FIG. 13 is a perspective view showing a state in which the linearity measuring system 50 according to the second embodiment of the present invention is installed in the steel pipe 3. FIG. 14 is a view showing the light receiving plate 60.

  As shown in both drawings, the linearity measurement system 50 includes laser irradiators 222 and 223 and a light receiving plate 60 for receiving a laser.

  The laser irradiators 222 and 223 are fixed to the upper end template 20U as in the first embodiment.

The light receiving plate 60 is composed of a magnet 122 and a transparent acrylic plate 601, and can be attached to and detached from the outer periphery of the steel pipe 3.
The light receiving plate 60 has two cross-shaped marks 621a and 621b, and the distance between the marks 621a and 621b is adjusted to the same length as the distance between the reference points 221a and 221b of the upper-end template 20U. Has been.

  An attachment method for attaching the laser irradiators 222 and 223 and the light receiving plate 60 described above will be described below.

<Attaching method of laser irradiators 222 and 223 and light receiving plate 60>
FIG. 15 is a flowchart showing a procedure for attaching the laser irradiators 222 and 223 and the light receiving plate 60 to the steel pipe 3.
As shown in the figure, the laser irradiators 222 and 223 and the light receiving plate 60 are attached to the steel pipe 3 by performing the ruled line forming step S10 to the light receiving plate installing step S90. A specific method will be described below according to the construction procedure.

  First, similarly to the first embodiment, the process from the scoring step S10 to the baseline setting step S60 is performed.

Next, the light receiving plate installation step S90 is performed.
In this step, the light receiving plate 60 is installed at the lower end of the steel pipe 3 (see FIG. 13). At this time, the position of the light receiving plate 60 is adjusted so that the lasers from the laser irradiators 222 and 223 installed on the upper template 20U irradiate the intersections of the cross-shaped marks 621a and 621b.
Further, the position of the light receiving plate 60 is adjusted so that the lasers from the laser irradiators 222 and 223 installed on the lower end template 20D irradiate the intersections of the cross-shaped marks 621a and 621b, respectively.

  After the light receiving plate 60 is installed, the lower end template 20D is removed from the steel pipe 3.

  The above-described scoring step S10 to light receiving plate installation step S90 are performed, and the linearity measurement system 50 is installed on the steel pipe 3.

  A connection method for connecting a new steel pipe 4 to the steel pipe 3 provided with the linearity measuring system 50 will be described below.

<Connection method for connecting a new steel pipe 4 to an existing steel pipe 3>
FIG. 16 is a flowchart showing a procedure for connecting a new steel pipe 4 to an existing steel pipe 3.
As shown in this figure, the new steel pipe 4 is connected to the existing steel pipe 3 by performing the light receiving plate installation process S150 to the steel pipe position confirmation process S301. A specific method will be described below according to the construction procedure.

First, a new steel pipe light receiving plate installation step S150 is performed.
In this process, the marking process S10, the template manufacturing process S20, the template installation process S30, the mark position confirmation process S40, the template fixing process S50, and the baseline setting process S60 shown in FIG. By these steps, the ruled line 31 is marked on the new steel pipe 4, the upper end side template 20U and the lower end side template 20D are attached, and the base lines a and b are set.
Thereafter, as shown in FIG. 17, the light receiving plate 60 is installed at the upper end portion of the new steel pipe 4 in the same manner as the method of installing the light receiving plate 60 on the steel pipe 3 described above.

  After the light receiving plate 60 is installed, the upper end template 20U is removed from the steel pipe 4.

Next, a steel pipe installation step S200 is performed.
In this step, the upper end of the new steel pipe 4 is connected to the lower end of the existing steel pipe 3 as in the first embodiment.

Next, steel pipe position confirmation process S301 is implemented.
In this step, as shown in FIG. 18, the lasers from the laser irradiators 222 and 223 installed in the steel pipe 3 are caused by the intersections of the marks 621 a and 621 b of the light receiving plate 60 of the new steel pipe 4 and the lower template 20D. It is confirmed whether or not the reference points 221a and 221b are irradiated.
Since the light receiving plate 60 installed in the steel pipe 3 and the light receiving plate 60 installed in the new steel pipe 4 are both transmissive, the laser can pass through both the light receiving plates 60 and irradiate the lower end template 20D.
Here, even when the laser beam is not irradiated to the intersections of the marks 621a and 621b of the light receiving plate 60 installed on the steel pipe 4 and the reference points 221a and 221b of the lower end template 20D, the irradiation position is shifted. If the deviation amount is within an error range determined in advance by design or the like, the intersections of the marks 621a and 621b of the light receiving plate 60 and the reference points 221a and 221b of the lower end template 20D are on the extended lines of the base lines a and b. Shall exist.
In addition, when the laser irradiation position does not exist within the error range, an adjustment step S350 for adjusting the position of the new steel pipe 4 is performed, and the laser irradiation position is moved on the extension lines of the base lines a and b. Let

  Thus, the new steel pipe 4 is extended under the existing steel pipe 3 by repeatedly performing from the light receiving plate installation process S150 for the new steel pipe to the steel pipe position confirmation process S301.

  According to the connection method between the steel pipes 3 and 4 in the first and second embodiments described above, even if the core wire CL of the existing steel pipe 3 does not coincide with the vertical axis, a new steel pipe 4 with respect to the steel pipe 3. Can be connected straight. That is, it can connect so that the core wire CL of the new steel pipe 4 exists on the extension line of the core wire CL of the steel pipe 3.

  Moreover, since the linearity measurement systems 10 and 50 are installed in the steel pipe 3, the new steel pipe 4 can be connected straight to the steel pipe 3 even in the narrow shaft 6 space.

  In addition, in the steel pipe position confirmation process S300, S301 for confirming the position of the new steel pipe 4 connected to the steel pipe 3, the steel pipe 3, the new steel pipe 4 and the like are suspended from the crane, and thus may be shaken. However, by using the linearity measurement systems 10 and 50, the position can be confirmed while being shaken. Therefore, the working efficiency is greatly improved as compared with the conventional case in which the inclination of the new steel pipe 4 cannot be measured until the shaking is stopped.

--- <About Third Embodiment> ---
Next, a third embodiment of the present invention will be described. In the third embodiment, a case where H-shaped steel is used will be described.

FIG. 19 is a perspective view showing a state in which the linearity measuring system 10 is installed on the H-shaped steel 8.
As shown in the figure, a linearity measurement system 10 is installed on the H-shaped steel 8. An attachment method for attaching the camera unit 11 and the system target 16 constituting the linearity measurement system 10 to the H-shaped steel 8 will be described below.

<Attaching Method of Camera Unit 11 and System Target 16>
FIG. 20 is a flowchart showing a procedure for attaching the camera unit 11 and the system target 16 to the H-shaped steel 8.
As shown in the figure, the process from the scoring step S11 to the system target installation step S80 is performed. A specific method will be described below according to the construction procedure.

First, a ruled writing step S11 is performed.
FIG. 21 is a plan view showing a state in which the member core 34 and the ruled line 33 are marked on the end face of the H-shaped steel 8.
As shown in the figure, in the scoring step S11, a mark is marked at the position of the member core 34, and a scribing line 33 is marked at the midpoint of the flange.
In the present embodiment, the member core 34 of the H-shaped steel 8 is detected by the following method. A detection method will be described with reference to FIG.
First, the width of the web of the H-shaped steel 8 is measured to calculate the position of the midpoint (hereinafter referred to as the web midpoint). Further, the widths of the flanges on both sides are respectively measured to calculate the position of the midpoint of each flange (hereinafter referred to as one side midpoint and the other side midpoint).
A position where the imaginary line passing through the web midpoint and parallel to the flange intersects with the imaginary line connecting the one-side midpoint and the other-side midpoint was defined as the member core 34.
The ruled line 33 written at the position of the midpoint of the flange may be written on at least one of at least one midpoint or the other midpoint.

Next, template production process S21 is implemented.
FIG. 23 is a plan view of the template 40. As shown in this figure, in the template manufacturing step S21, two templates 40 to be attached to the upper end surface and the lower end surface of the H-shaped steel 8 are manufactured.
Each template 40 includes a transparent rectangular plate 41, an extending portion 22, a fixing portion 23, and a handle 24.
The plate 41 is formed so that the outer dimension thereof matches the outer dimension of the H-shaped steel 8, and a center point 411 is described at a position where the diagonal lines of the plate 41 intersect.
When each template 40 is attached to the upper end surface and the lower end surface of the H-shaped steel 8, the sides of the plate 41 on which the extension portions 22 are installed so that the orientations of the extension portions 22 can be aligned in the same direction. A linear mark 212 is described at the midpoint position.
As in the first and second embodiments, the extended portion 22 is provided with two reference points 221a and 221b at positions separated from the center point 411 by a predetermined distance.
One protrusion 231 of the fixing portion 23 is provided on each side surface of the plate 41 so that the template 40 does not come off from the H-shaped steel 8.

Next, template setting process S31 is implemented.
FIG. 24 is a perspective view showing a state in which the templates 40 are installed at both ends of the H-shaped steel 8.
As shown in this figure, in the template installation step S31, the template 40 is attached to the upper end surface and the lower end surface of the H-shaped steel 8, and the position of the center point 411 and the position of the linear mark 212 described on the template 40 are as follows. The position of the template 40 is adjusted so as to coincide with the positions of the member core 32 and the ruled line 33 of the H-shaped steel 8 respectively.

Next, a mark position confirmation step S41 is performed.
In this step, it is confirmed whether or not the positions of the center point 411 and the linear mark 212 of the template 40 coincide with the positions of the member core 34 and the ruled line 33 of the H-shaped steel 8, respectively.
When the position of the center point 411 matches the position of the member core 34 and the position of the mark 212 matches the position of the ruled line 33, the position of the center point 411 of the template 40 is above the H-shaped steel 8. It will correspond with the position of the member core 34 of an end surface and a lower end surface.

  In the following description, the templates 40 installed on the upper end surface and the lower end surface of the H-shaped steel 8 are referred to as an upper end side template 40U and a lower end side template 40D, respectively.

By the way, the reference point 221a of the upper end side template 40U and the reference point 221a of the lower end side template 40D are provided at positions separated from the member core 34 of the H-shaped steel 8 by the same distance in the horizontal direction. Therefore, the base line a connecting the reference point 221a of the upper end template 40U and the reference point 221a of the lower end template 40D is parallel to the core line CL connecting the member cores 34 at both ends of the H-shaped steel 8.
The base line b connecting the reference point 221b of the upper end template 40U and the reference point 221b of the lower end template 40D is also parallel to the core line CL, like the base line a.

  In the mark position confirmation step S41, when the position of the center point 411 matches the position of the member core 32 and the position of the mark 212 matches the position of the ruled line 31, the next template fixing step S50 is performed. The template 40 is fixed to the H-shaped steel 8 by performing.

  Next, as in the first and second embodiments, a baseline setting step S60, a camera unit installation step S70, and a system target installation step S80 are performed.

  The above-described scoring step S11 to system target installation step S80 are performed, and the linearity measurement system 10 is installed on the H-shaped steel 8.

  When connecting a new H-shaped steel 9 to the H-shaped steel 8 equipped with the linearity measuring system 10, from the new steel pipe target installation step S100 (see FIG. 10) to the steel pipe position confirmation step S300, as in the first embodiment. To implement.

  In this way, a tower-like structure is constructed by repeatedly performing the new steel pipe target installation step S100 to the steel pipe position confirmation step S300.

  In addition, in this embodiment, although the case where the linearity measurement system 10 was installed in the H-shaped steel 8 was demonstrated, the linearity measurement system 50 can also be installed.

--- <About the fourth embodiment> ---
Next, a fourth embodiment of the present invention will be described. In the fourth embodiment, a case where a square steel pipe 18 is used will be described.

FIG. 25 is a perspective view showing a state in which the linearity measurement system 10 is installed on the steel pipe 18.
As shown in the figure, the camera unit 11 and the system target 16 are installed in a square steel pipe 18.
The ruled writing step S12 for installing the camera unit 11 and the system target 16 will be described below.

FIG. 26 is a plan view showing a state in which ruled lines 35 are marked on the end face of the square steel pipe 18.
As shown in the figure, in the scoring step S12, the ruled lines are respectively formed at the positions where the virtual X axis and the virtual Y axis with the member core 32 set at the time of manufacturing the steel pipe 18 as the origin intersect with the end surface of the steel pipe 3. Write a writing line 35.

Next, template production process S22 is implemented.
FIG. 27 is a plan view of the template 40. As shown in the figure, in the template manufacturing step S21, two templates 40 to be attached to the upper end surface and the lower end surface of the steel pipe 18 are manufactured.
When each template 40 is attached to the upper end surface and the lower end surface of the steel pipe 18, the sides of the plate 41 to which the extension portions 22 are attached are arranged so that the orientations of the extension portions 22 can be aligned in the same direction. A linear mark 212 is described at the midpoint position and at the midpoint position of the side adjacent to this side.

Next, template installation process S32 is implemented.
In the template installation step S32, the template 40 is attached to each of the upper end surface and the lower end surface of the steel pipe 18, the outer periphery of the plate 41 coincides with the outer periphery of the steel pipe 18, and the position of the linear mark 212 described in the template 40 However, the position of the template 40 is adjusted so that it may correspond with the position of the ruled line 35 described on each end surface of the steel pipe 18.

  Next, as in the first embodiment, a mark position confirmation step S40, a template fixing step S50, a baseline setting step S60, a camera unit installation step S70, and a system target installation step S80 are performed.

  The above-described scoring step S12 to system target installation step S80 are performed, and the linearity measurement system 10 is installed on the steel pipe 18.

  When a new rectangular steel pipe 19 is connected to the steel pipe 18 provided with the linearity measurement system 10, the new steel pipe target installation process S 100 (see FIG. 10) to the steel pipe position confirmation process S 300 as in the first embodiment. To implement.

  In this way, a tower-like structure is constructed by repeatedly performing the new steel pipe target installation step S100 to the steel pipe position confirmation step S300.

  In addition, in this embodiment, although the case where the linearity measurement system 10 was installed in the steel pipe 18 was demonstrated, the linearity measurement system 50 can also be installed.

  According to the connection method between the H-shaped steels 8 and 9 and the steel pipes 18 and 19 in the third and fourth embodiments described above, even if the core wire CL of the H-shaped steel 8 and the steel pipe 18 does not coincide with the vertical axis, New H-shaped steel 9 and steel pipe 19 can be connected straight to H-shaped steel 8 and steel pipe 18, respectively. That is, it can connect so that the core wire CL of the new H-shaped steel 9 and the steel pipe 19 may exist on the extension line of the core wire CL of the H-shaped steel 8 and the steel pipe 18, respectively.

  Moreover, since the linearity measuring system 10 is installed in the H-shaped steel 8 and the steel pipe 18, the new H-shaped steel 9 and the steel pipe 19 are aligned in a straight line with respect to the H-shaped steel 8 and the steel pipe 18, respectively, even in the narrow shaft 6 space. Can be connected to.

  In all the embodiments described above, the case where the new steel pipes 4 and 19 are connected under the steel pipes 3 and 18 and the case where the new H-shaped steel 9 is connected under the H-shaped steel 8 have been described. The present invention is not limited to this, and new steel pipes 4 and 19 may be connected to the steel pipes 3 and 18, respectively, or new H-shaped steel 9 may be connected to the H-shaped steel 8.

  In all the embodiments described above, when new steel pipes 4 and 19 are respectively connected below the steel pipes 3 and 18 arranged in a substantially vertical direction, or under the H-shaped steel 8 arranged in a substantially vertical direction. Although the case where the new H-shaped steel 9 is connected was demonstrated, it is not limited to this, The steel pipes 3 and 18 or the H-shaped steel 8 is arrange | positioned in a substantially horizontal direction so that beams may be connected horizontally, New steel pipes 4 and 19 or H-shaped steel 9 may be connected to the left and right sides, respectively.

3 Steel pipe 4 New steel pipe 6 Vertical shaft 8 H-shaped steel 9 New H-shaped steel 10 Linearity measuring system 11 Camera unit 12 Camera unit main body 121 Base 122 Magnet 13 Imaging device 131 Front camera 132 Rear camera 14 Illumination 15 Camera target 151 Front reflecting mirror 152 Rear reflecting mirror 16 System target 161 Magnet 162 Plate member 163 Reflecting mirror 18 Square steel pipe 19 New square steel pipe 20 Template 20U Upper end side template 20D Lower end side template 21 Plate 211 Center point 212 Linear Mark 22 Extension part 221a Reference point 221b Reference point 222 Laser irradiator 223 Laser irradiator 224 Laser irradiator 225 Laser irradiator 23 Fixed part 231 Protrusion 232 Liner plate 233 Pin 234 Hole 24 Handle 31 Ruled line 32 Core 33 Ruled line 34 Member core 35 Ruled line 40 Template 40U Upper end template 40D Lower end template 41 Plate 411 Center point 50 Linearity measuring system 60 Light receiving plate 601 Acrylic plate 621a Mark 621b Mark 100 Member core 101 Member core S10 Ruled Writing process S11 Ruled line process S12 Ruled line process S20 Template manufacturing process S21 Template manufacturing process S22 Template manufacturing process S30 Template installation process S31 Template installation process S32 Template installation process S40 Mark position confirmation process S41 Mark position confirmation process S50 Template fixing process S60 Baseline Setting process S70 Camera unit installation process S80 System target installation process S90 Light receiving plate installation process S100 New steel pipe target installation process S150 New steel pipe light receiving plate Installation process S200 Steel pipe installation process S300 Steel pipe position confirmation process S301 Steel pipe position confirmation process a Base line b Base line CL Core line M Mark N Mark N Mark MN Virtual core

Claims (3)

A method for setting an imaginary line parallel to a core line of a construction member that is a column or a beam ,
When the construction member is manufactured, a first reference point is provided to provide a first reference point at a position separated from a member core set on one end surface of the construction member by a predetermined distance in a predetermined direction within the end surface. Process,
A second reference point installation step of providing a second reference point at a position separated from the member core set on the other end surface of the construction member by the predetermined distance in the same direction as the predetermined direction in the end surface;
A virtual line that sets a virtual line connecting the first reference point and the second reference point by irradiating light from the light irradiator installed at the position of the first reference point toward the second reference point. A setting process;
With
In the first reference point installation step,
A scoring step of marking a scribing line on one end face of the construction member to indicate the direction for setting the virtual line;
A mark for a base point indicating a position to be a base point, a mark for the first reference point indicating a position separated from the base point by the predetermined distance , and a mark for a direction for indicating the direction of the first reference point with respect to the base point The reference mark for the base point and the mark for the direction are shown, the abutting portion whose outer dimension is aligned with one end surface of the construction member, and the mark for the first reference point is shown. Using a first plate having an extending portion extending from the contact portion, and abutting the contact portion of the first plate with one end surface of the construction member according to the outer periphery;
A mark position confirmation step of adjusting the position of the first plate so that the position of the direction mark coincides with the position of the ruled line;
By performing, the first plate such that said base point for mark coincides with the position of said member core which is set on one end surface of the construction member, is brought into contact with one end surface of the construction member ,
In the second reference point installation step,
A mark for a base point indicating a position to be a base point, a mark for the second reference point indicating a position separated from the base point by the predetermined distance , and a mark for a direction for indicating the direction of the second reference point with respect to the base point The reference mark for the base point and the mark for the direction are shown, the abutting portion whose outer dimension is matched with the other end surface of the construction member, and the mark for the second reference point is shown. Using a second plate having an extending portion extending from the contact portion, and bringing the contact portion of the second plate into contact with the other end surface of the construction member with the outer periphery aligned with each other;
A mark position confirmation step of adjusting the position of the second plate so that the position of the direction mark coincides with the position of the ruled line;
By performing the above, the second plate is brought into contact with the other end surface of the construction member so that the mark for the base point coincides with the position of the member core set on the other end surface of the construction member. A method for setting an imaginary line parallel to a core line of a construction member. An installation method for installing a linearity measuring device on the construction member using a pair of virtual line setting jigs for setting a virtual line parallel to the core wire of the construction member,
The virtual line setting jig is
A base point mark indicating a base point position, a reference point mark indicating a position away from the base point by a predetermined distance in a predetermined direction, and a direction mark for indicating the direction of the reference point with respect to the base point are shown. A detachable member attachable to and detachable from an end surface of the construction member;
A fixing member capable of fixing the detachable member to an end surface of the construction member;
With
A scoring step of marking a scoring line for indicating the direction of setting the virtual line on both end faces of the construction member;
An installation step of installing the pair of virtual line setting jigs on both end faces of the construction member;
A mark position confirmation step for adjusting the positions of the pair of virtual line setting jigs so that the position of the direction mark of the pair of virtual line setting jigs matches the position of the ruled line;
A light irradiator is installed at the position of the reference point mark of the one virtual line setting jig, and the position of the irradiated light is set to the position of the reference point mark of the other virtual line setting jig. A baseline setting process for setting the baseline by matching,
An imaging means installation step of arranging an imaging means capable of imaging the reference point mark of both of the pair of virtual line setting jigs on the base line;
A target installation step of installing a target at the position of the reference point mark of the one virtual line setting jig;
An installation method for installing a linearity measuring device on the construction member. An installation method for installing a linearity measuring device on the construction member using a pair of virtual line setting jigs for setting a virtual line parallel to the core wire of the construction member,
The virtual line setting jig is
A base point mark indicating a base point position, a reference point mark indicating a position away from the base point by a predetermined distance in a predetermined direction, and a direction mark for indicating the direction of the reference point with respect to the base point are shown. A detachable member attachable to and detachable from an end surface of the construction member;
A fixing member capable of fixing the detachable member to an end surface of the construction member;
With
A scoring step of marking a scoring line for indicating the direction of setting the virtual line on both end faces of the construction member;
An installation step of installing the pair of virtual line setting jigs on both end faces of the construction member;
A mark position confirmation step for adjusting the positions of the pair of virtual line setting jigs so that the position of the direction mark of the pair of virtual line setting jigs matches the position of the ruled line;
A light irradiator is installed at the position of the reference point mark of the one virtual line setting jig, and the position of the irradiated light is set to the position of the reference point mark of the other virtual line setting jig. A baseline setting process for setting the baseline by matching,
A target installation step of installing a target at the position of the reference point mark of the other virtual line setting jig;
An installation method for installing a linearity measuring device on the construction member.

Images