JP2017044558A - Structure position measurement method, installation method, and position measurement device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure position measurement method, installation method, and position measurement device capable of performing easy and accurate measurement without affecting the construction.SOLUTION: In installing a steel column 24 at a determined planned position, the tips of linear members 3 of measurement towers 1 and 1' are extended to different places of the steel column 24 between the position separate from the planned position and the steel column 24, the insides of crossing portions 12 of a laser displacement meter are adjusted so that the linear members 3 pass through them, and the current position of the steel column 24 is specified on the basis of reference positions of the linear members 3 and the current positions of the linear members 3.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a structure position measuring method, an installation method, and a position measuring apparatus.

  In the construction of a building structure, for example, when a back-strike method is adopted, a structural pillar is built in the ground.

  For example, the construction of the structural pillar is performed as follows. First, an excavator drills a hole having a size that allows a pile to be inserted by mud replacement. Thereafter, the pile is suspended to a predetermined depth, and the pile pillar is adjusted to a predetermined position. In particular, when there is a height restriction at the construction site, the structure pillar is connected to several stages at the time of construction, and the tip is made to reach the specified depth by extending the length. After that, rooting concrete is placed. In order to construct a high-quality structure, it is necessary to build the pile vertically with high accuracy.

  In the above method, there is a possibility that the position of the end of the stem column is deviated from the design coordinates due to the addition of the stem column or the placement of solidified concrete. Therefore, when building a true pillar, the tip position of the true pillar must be monitored in real time and corrected if the tip position deviates from the design coordinates. The same applies to the construction of piles and pillars.

  For example, devices and methods disclosed in Patent Documents 1 and 2 are known as methods for measuring an inclination angle when a structure is built in the ground.

  For example, Patent Document 1 discloses an insertion-type inclinometer 201 that measures an inclination angle in a measurement tube 205 embedded in the ground as shown in FIG. The insertion-type inclinometer 201 includes a guide wheel 202, an inclination angle detection unit 203, and a pressure detection unit 204. When the guide wheel 202 moves in a groove provided in the axial direction inside the measurement tube 205, the insertion type inclinometer 201 moves up and down in the measurement tube 205. The measurement tube 205 is filled with water, and the pressure detection unit 204 measures the depth of the insertion-type inclinometer 201 by detecting the water pressure. By moving the insertion-type inclinometer 201 up and down while measuring the depth, the insertion-type inclinometer 201 is moved to a predetermined depth, and the inclination angle detection unit 203 measures the inclination angle of the measurement tube 205 at the depth.

  Patent Document 2 discloses a measurement system 300 that measures the vertical accuracy of a steel pipe 301 inserted in the ground as shown in FIG. The measurement system 300 includes a laser vertical unit 302 that irradiates laser light downward in the vertical direction in the steel pipe 301, a target 304 that is installed on a diaphragm 303 in the steel pipe 301 and receives the laser light emitted from the laser vertical unit 302, An imaging device 305 that captures the arrival position of the laser beam irradiated onto the target 304 is provided. The vertical accuracy of the steel pipe 301 is measured based on the degree of deviation between the center of the target 304 and the irradiation position of the laser light irradiated on the target 304.

  The apparatuses and methods disclosed in Patent Documents 1 and 2 measure the inclination angle of the measurement tube 205 and the steel tube 301. The insertion type inclinometer 201 and the laser vertical device 302 used here are used. It can be considered that the present invention is applied to the measurement of the inclination angle of the true pillar, that is, the center position of the true pillar.

Japanese Patent Laid-Open No. 11-23265 JP 2011-7573 A

  When measuring the center position of a structural pillar using an insertion-type inclinometer as disclosed in Patent Document 1, a guide such as a ditch is installed in advance, and the position is already measured. Measure clearly by moving the insertion type tilt at regular intervals from the ground or the upper part of the measuring tube, and then integrating the depth and tilt angle to clearly determine the position. It is necessary to calculate the difference from the point. It takes a lot of time to perform this work, and therefore cannot be measured in real time.

  Also, when measuring the center position of the structural pillar using the laser beam irradiated in the vertical direction, prepare a measurement tube that allows the laser beam to pass through, and waterproof the measurement tube, A light receiving sensor and an imaging device as described in Patent Document 2 must be arranged at the bottom. For this reason, it is necessary to consider in advance the installation space for the measurement equipment and the method for collecting the measurement equipment after the measurement is completed, so that it takes a lot of time to formulate the construction plan.

  In addition, when placing solidified concrete, it is necessary to install a tremy pipe from the ground to the concrete placement position. As mentioned above, the placement of the foundation column and the measurement of the center position of the construction column are parallel because the placement of the foundation column may deviate from the design coordinates. It is desirable to do so. In other words, with the measurement equipment installed, it is necessary to install tremy pipes and cast concrete. However, when an insertion-type inclinometer or laser light is used, these measuring devices may become an obstacle, and construction such as treme tube installation may not be performed quickly.

  Problem to be solved by the present invention is to provide a position measurement method, an installation method, and a position measurement device for a structure that can easily and accurately measure without affecting construction. .

The present invention employs the following means in order to solve the above problems. That is, according to the present invention, when the structure is installed at a predetermined planned position, a linear member is stretched between the structure and the position separated from the planned position. There is provided a structure position measuring method including specifying a current position of the structure based on a reference position and a current position of the linear member.
According to the above configuration, since the current position of the structure is specified based on the predetermined reference position of the linear member and the current position of the linear member, the measurement is easily performed in less time. It becomes possible.
Moreover, since it is possible to measure the structure by simply fixing the linear member, it is difficult to affect the construction. Therefore, the construction can be performed while controlling the accuracy by performing the measurement.
In addition, since only a linear member is used as the measurement material, there is no need for large-scale pre-preparation, there are few restrictions on measurement space, the equipment removal process after measurement is simple, and the measurement material is waterproof. There is no need to take any action. Therefore, there is little time influence on the construction plan and actual construction.

Measuring the current position of the linear member by irradiating the linear member with laser light so as to intersect at least one direction and two directions between the structure and the separated position. Deriving a fixed position of the linear member to the structure based on a reference position of the linear member, a current position of the linear member, and a length of the linear member. But you can.
According to the above configuration, since the current position of the linear member is measured immediately by receiving the irradiated laser beam, the position of the structure can be accurately measured in real time.

The structure is a long body, the linear member is a wire, and the wire is fixed in the vicinity of the distal end of the long body. The long body may be installed at the planned position in the liquid while measuring the current position of the long body based on the current position and the vertical line.
According to the configuration as described above, it is possible to accurately measure the tip position of a long body such as a true pillar in real time.

The structure is a structure sinking on the seabed, the linear member is a wire, and the wire is fixed to the upper surface of the structure sinking on the seabed, and the position measuring method for the structure as described above Thus, the structure to be submerged on the seabed may be installed at the planned position in the sea while measuring the current position of the structure to be subsidized on the seabed based on the current position and the vertical line of the wire.
According to the above configuration, it is possible to accurately measure in real time the position of the upper surface of a structure such as a submerged box that is submerged on the sea floor.

Further, in the present invention, when the structure is installed at a predetermined planned position, a linear member is stretched between the structure and the position spaced from the planned position, and the structure and the structure. Irradiating the linear member with laser light so as to intersect at least one direction and two directions between the separated positions, and measuring the current position of the linear member, the linear member A position of the structure including deriving a fixed position of the linear member to the structure based on a reference position of the linear member, a current position of the linear member, and a length of the linear member A measurement method, further comprising: calibrating an angle between the laser beams so that the direction of 1 and the direction of 2 are orthogonal before measuring the current position of the linear member A position measuring method is provided.
According to the above configuration, since the current position of the structure is measured based on the predetermined reference position of the linear member and the current position of the linear member, the measurement is easily performed in a small amount of time. It becomes possible.
Moreover, since it is possible to measure the structure by simply fixing the linear member, it is difficult to affect the construction. Therefore, the construction can be performed while controlling the accuracy by performing the measurement.
In addition, since only a linear member is used as the measurement material, there is no need for large-scale pre-preparation, there are few restrictions on measurement space, the equipment removal process after measurement is simple, and the measurement material is waterproof. There is no need to take any action. Therefore, there is little time influence on the construction plan and actual construction.
In addition, since the current position of the linear member is measured immediately by receiving laser light calibrated so that the directions of 1 and 2 are orthogonal, the position of the structure in real time is accurate. Measurement is possible.

After calibrating the angle between the laser beams, calibrating the moving direction of the light source so that the laser light source moves in the direction of 1 and 2, and measuring with the laser light source Further comprising calibrating the reference line installed in the apparatus so that the direction of 1 is parallel, and moving the light source so that the laser beam irradiates the linear member. But you can.
According to the above configuration, since the light source of the laser beam is calibrated so that the laser beam is moved in the laser beam irradiation direction, the linear member is placed in the laser beam intersection region after the light source is installed. Even in the case of moving the light source so as to be positioned in the position, it is possible to move without losing the measurement accuracy. Therefore, accurate measurement is possible.
In addition, since the reference line installed in a measuring apparatus equipped with a laser light source is calibrated so that the direction 1 is parallel, the measuring apparatus can be accurately positioned at any position on the construction site. It becomes possible to measure.

The present invention is also a structure position measuring apparatus used when a structure is installed at a predetermined planned position, and is stretched between a position spaced from the planned position and the structure. Further, between the linear member and the structure and the spaced position, the linear member is irradiated with laser light so as to intersect at least one direction and two directions, and the linear member The structure of the linear member based on the laser displacement meter, the reference position of the linear member, the current position of the linear member, and the length of the linear member There is provided a position measuring apparatus for a structure, including an arithmetic unit for deriving a fixed position.
According to the above configuration, since the current position of the structure is measured based on the predetermined reference position of the linear member and the current position of the linear member, the measurement is easily performed in a small amount of time. It becomes possible.
Moreover, since it is possible to measure the structure by simply fixing the linear member, it is difficult to affect the construction. Therefore, the construction can be performed while controlling the accuracy by performing the measurement.
In addition, since only a linear member is used as the measurement material, there is no need for large-scale pre-preparation, there are few restrictions on measurement space, the equipment removal process after measurement is simple, and the measurement material is waterproof. There is no need to take any action. Therefore, there is little time influence on the construction plan and actual construction.

The laser displacement meter may be capable of calibrating the angle between the laser beams so that the direction 1 and the direction 2 are orthogonal to each other.
According to the configuration as described above, the current position of the linear member is immediately measured by receiving the laser beam calibrated so that the direction of 1 and the direction of 2 are orthogonal to each other. Accurate position measurement of the structure is possible.

 ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the position measuring method of a structure, the installation method, and position measuring apparatus which can perform an exact measurement simply.

  In a preferred embodiment, real-time measurements can be performed.

It is explanatory drawing which showed the measuring rod used for a position measurement in the position measuring method of the structure shown as 1st, 2nd embodiment of this invention. It is a top view of the laser displacement meter used for a measuring rod. In the structure position measuring method shown as the first and second embodiments of the present invention, FIG. In the position measuring method of the structure shown as 1st, 2nd embodiment of this invention, it is the partial sectional view side view which shows the setting condition of the reference position of a laser displacement meter. In the structure position measuring method shown as the first and second embodiments of the present invention, it is a partially sectional side view showing a measurement situation of the center position of a true pillar. In the structure position measuring method shown as the first and second embodiments of the present invention, it is a partial cross-sectional top view showing a fixing state of the linear member to the true pillar. It is a top view of the laser displacement meter which shows the calibration situation between two laser optical axes in the position measuring method of the structure shown as the second embodiment of the present invention. It is a top view of a laser displacement meter which shows the calibration situation of the moving direction of a laser displacement meter in the position measuring method of a structure shown as a 2nd embodiment of the present invention. In the structure position measuring method shown as the second embodiment of the present invention, (a) a top view and (b) a side view showing a calibration state between a housing and a laser optical axis, partially in cross section. is there. In the structure position measuring method shown as the second embodiment of the present invention, it is a top view of the laser displacement meter showing the calibration status between the reference line of the outer frame of the measuring device and the laser optical axis. In the structure position measuring method shown as the 2nd Embodiment of this invention, it is the top view seen from the partial cross section which shows the calibration condition between the reference line of the outer frame of a measuring apparatus, and a laser optical axis. It is the figure which showed the measuring rod used for a position measurement in the position measuring method of the structure shown as the 3rd Embodiment of this invention. It is a perspective view which shows the installation condition of a measuring rod in the position measuring method of the structure shown as the 3rd Embodiment of this invention. It is a perspective view which shows the measurement condition of the attitude | position of a submerged box in the position measuring method of the structure shown as the 3rd Embodiment of this invention. It is sectional drawing which shows the conventional measurement system. It is sectional drawing which shows the conventional measurement system.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a view showing a measuring rod 1 used for position measurement in the structure position measuring method shown as the first and second embodiments of the present invention.

  The measuring rod 1 is a structure position measuring device used when a structure is installed at a predetermined planned position, and is a line stretched between a position separated from the planned position and the structure. The linear member 3 is irradiated between the linear member 3 and the position separated from the structure so that the laser beam is crossed from at least the first direction and the second direction, and the current position of the linear member 3 is determined. Based on the laser displacement meter 4, the reference position of the linear member 3, the current position of the linear member 3, and the length of the linear member 3 to be measured and specified, the linear member 3 is attached to the structure. It is a position measuring apparatus of a structure provided with the calculating part 8 which derives | leads-out a fixed position. The measuring rod 1 further includes a housing 2, a weight 5, a front sheave 6, a rear sheave 7, and a display unit 9.

  The housing 2 stores therein a laser displacement meter 4, a weight 5, a front sheave 6, and a rear sheave 7. In FIG. 1, the calculation unit 8 and the display unit 9 are provided outside the housing 2, but may be provided inside the housing 2.

  For example, the linear member 3 is a wire having a diameter of about 1 mm, but is not limited thereto. The tip 3a of the linear member 3 is located outside the housing 2 and is fixed to the structure to be measured. The linear member 3 is inserted through an opening (not shown) on the lower surface of the housing 2. After being fixed to the structure, the linear member 3 is kept in a tensioned state by a weight 5 described later at the time of measurement. The opening is sufficient to prevent the linear member 3 from coming into contact with the edge of the opening even if the structure moves within the assumed range after the tip 3a of the linear member 3 is fixed to the structure. It has a size.

  The front sheave 6 having a disc shape is arranged so that the central axis 6b is horizontal. A groove is formed on the outer periphery of the front sheave 6 over the entire circumference, and the linear member 3 inserted through the opening is placed in the groove located on the upper side of the front sheave 6. The linear member 3 is moved back and forth in the extending direction by the movement of the structure to which the tip 3a of the linear member 3 is fixed, and the front sheave 6 is moved in the vertical plane perpendicular to the central axis 6b. Rotate with. A linear member delivery point 6a, which is a boundary between a portion of the groove portion located on the upper side of the front sheave 6 where the linear member 3 is in contact with a portion where the linear member 3 is spaced from the groove portion and heads toward the opening portion. The front sheave 6 is disposed in the housing 2 so as to be positioned substantially vertically above the opening on the lower surface of the housing 2.

  The rear sheave 7 has the same shape as that of the front sheave 6 so that the rotation shaft thereof is substantially parallel to the rotation shaft of the front sheave 6, and the front sheave 6 and the rear sheave 7 are in substantially the same vertical plane. It arrange | positions in the housing | casing 2 so that it may be located. Grooves are also formed on the outer periphery of the rear sheave 7, and the linear member 3 is placed on the upper side of the front sheave 6 and then placed on the groove located on the upper side of the rear sheave 7. Yes.

  The rear end 3 b of the linear member 3 is fixed to the weight 5. Thereby, when the front-end | tip 3a is fixed to a structure, between the front-end | tip 3a and the linear member delivery point 6a of the front sheave 6, between the front sheave 6 and the rear sheave 7, and between the rear sheave 7 and the weight 5 The linear member 3 located in between is in tension.

  The weight 5 needs to have a sufficient weight for the linear member 3 to be tensed. However, it is easier to handle the measuring rod 1 and the strength of the linear member 3 than to make it excessively heavy. In consideration of this, it is preferable to set an appropriate weight. In the first embodiment, the weight 5 is used for tensioning the linear member 3, but instead, a tension winch as described later in the third embodiment is used. It doesn't matter.

  A laser displacement meter 4 is installed between the linear member delivery point 6 a of the front sheave 6 and the opening on the lower surface of the housing 2. As shown in FIG. 2, the laser displacement meter 4 includes an X-axis direction light transmitting unit 4a, a Y-axis direction light transmitting unit 4b, an X-axis direction light receiving unit 4c, and a Y-axis direction light receiving unit 4d. The X-axis direction light transmission unit 4a and the Y-axis direction light transmission unit 4b transmit laser beams 10 and 11 having a certain width.

  The X-axis direction light receiving unit 4c and the Y-axis direction light receiving unit 4d are disposed to face the X-axis direction light transmitting unit 4a and the Y-axis direction light transmitting unit 4b, respectively. The X-axis direction light receiving unit 4c and the Y-axis direction light receiving unit 4d receive laser beams 10 and 11 having a certain width transmitted by the corresponding light transmitting units 4a and 4b.

The light transmitting units 4a and 4b and the light receiving units 4c and 4d are arranged so that the laser beams 10 and 11 transmitted by the X-axis direction light transmitting unit 4a and the Y-axis direction light transmitting unit 4b are orthogonal to each other. That is, the intersecting portion 12, which is a region where the laser beam 10 and the laser beam 11 intersect, has a rectangular or square shape. Accordingly, 10a of one side of each of the laser beams 10 and 11, when the 11a, _X L is an extension of the sides 10a and side edge 11a, the _{Y L} and the laser beam axis, the intersection point _{O L} The position in the intersection 12 can be represented by a coordinate system using two laser beams as the origin.

  The laser displacement meter 4 is arranged so that the linear member 3 passes through the intersection 12 when the linear member 3 is tensioned. Based on the light reception results of the laser beams 10 and 11 acquired by the X-axis direction light receiving unit 4c and the Y-axis direction light receiving unit 4d, and between the X-axis direction light transmitting unit 4a and the X-axis direction light receiving unit 4c, and Y It is possible to detect the position of the linear member 3 existing between the axial light transmitter 4b and the Y-axis light receiver 4d. Regarding the laser beam 10 having a certain width transmitted by the X-axis direction light transmitting unit 4a, if the laser beam 10 at a certain point is not received by the X-axis direction light receiving unit 4c, the line is located at a position corresponding to the point. It can be determined that the shaped member 3 exists. The same applies to the space between the Y-axis direction light transmitter 4b and the Y-axis direction light receiver 4d.

That is, L _x is a detection point of the linear member 3 in the laser optical axis X _L direction and L _y is a linear member in the laser optical axis Y _L direction with respect to the passing point W of the linear member 3 on the intersection 12. If the detection point is 3, the coordinates of the passing point W on the laser light coordinate system can be expressed as (L _x , L _y ).

The laser displacement gauge 4, so that the laser optical axis X _L of the laser beam coordinate system, such as at least one side or the base steel of the housing 2, as shown in FIG. 3, is parallel to the lateral line 2a to be a reference line It is installed in the housing 2.

The laser displacement meter 4 is fixed to a sensor table (not shown), and is fixed to the measuring rod 1 through this sensor table. The sensor table is movable in two directions parallel to the two laser optical axes X _L and Y _L , so that the sensor table can freely move in a plane formed by the two laser optical axes X _L and Y _L. It is possible to move.

  The X-axis direction light receiving unit 4c and the Y-axis direction light receiving unit 4d transmit the light reception results of the laser beams 10 and 11 to the calculation unit 8 shown in FIG.

  The calculation unit 8 receives the light reception results of the laser beams 10 and 11 from the X-axis direction light receiving unit 4c and the Y-axis direction light receiving unit 4d, and detects the position of the linear member 3 in the manner described above. Based on the position information of the linear member, the position of the structure is calculated and measured by a method described later.

  The display unit 9 displays the position of the structure measured by the calculation unit 8.

  Next, the method shown as the first embodiment in which the center position of the tip of the long body is measured using the measuring rod 1 described above will be described with reference to FIGS. In this method, when the structure is installed at a predetermined planned position, the linear member 3 is stretched between a position separated from the planned position and the structure, and the reference position of the linear member 3 Measuring the current position of the structure based on the current position of the linear member. Here, the structure is a long body, the linear member is fixed near the tip of the long body, and based on the current position and the vertical line of the linear member as described above, The long body is installed at the planned position in the liquid while measuring the position. Specifically, the laser displacement meter 4 detects the passage position of the linear member 3 fixed in the vicinity of the front end of the true pillar positioned in the muddy water, which has been drilled, and this passage. From the position and depth, that is, the length of the linear member 3, the actual coordinate value of the center of the tip of the linear member 3 is obtained.

First, the measuring rod 1 is installed near the place where the construction pillar is built. Figure 3 is a top view showing a situation in which the measuring turret 1 was placed in the ground, so that the center of the tip of構真pillar is located at a position O _R defined, the構真pillar, like an anchor hole 21 The case where it installs in the predetermined design position 20 is shown. O _R is to the center of the tip of構真posts are installed, is the origin of the real coordinate system in the actual construction space, so that the axis X _R, Y _R are orthogonal to each other, passing through the origin O _R ing.

The measuring rod ₁ can be arranged at an arbitrary installation position and an arbitrary rotation angle with the axis XR on this real coordinate system. Of the housing 2, parallel to the laser optical axis X _L of the laser beam coordinate system, the side surface 2a as a reference line, and each of the two end sides extending in the vertical direction, the distance between the axis X _R, L _a, Let _Lb. Further, the coordinates of the linear member sending point 6a of the measuring rod 1 in the real coordinate system are (X _s1 , Y _s1 ).

In the first embodiment, as shown in FIG. 4, two measuring rods 1 and 1 ′ are used. As shown in FIG. 5 later, the tips of the linear members 3 of the measuring rods 1 and 1 ′ are fixed at different positions of the construction column, and the coordinate values on the real coordinate system of the respective fixed positions are calculated. In FIG. 4, the two measuring rods 1 are arranged so as to be opposed to each other with respect to the center of the true pillar. However, the positional relationship and the rotational relationship between the two measuring rods 1, 1 ′ may be arbitrary. The coordinates of the linear member sending point 6a of the second measuring rod 1 ′ are defined as (X _s2 , Y _s2 ).

  After installing the measuring rods 1 and 1 ′, the weight 22 is fixed to the tip 3a of the linear member 3 for each measuring rod 1 and 1 ′, and the weight 22 is put in a container 23 containing water. The shaking of the weight 22 is attenuated. In this state, the reference position of the linear member 3 is set in the intersection. That is, the X-axis direction light receiving unit 4c and the Y-axis direction light receiving unit at this time are adjusted after moving the laser table so that the linear member 3 passes through the intersection 12 of the laser displacement meter 4. The 4d light reception result is transmitted to the calculation unit 8.

The calculation unit 8 measures the passing position of the linear member 3 based on the received result, and determines the reference positions (X ₀₁ , Y ₀₁ ) and (X ₀₂ , Y ₀₂ ) on the laser beam coordinate system.

  Actually, in order to eliminate the influence of the swaying of the minute linear member 3, the measurement is performed continuously for a certain period of time, and the moving average of the result is taken, so that the passing position of the linear member 3 at the intersection 12 is obtained. Is determined.

  Next, as shown in FIG. 5, the tip 3 a of the linear member 3 of each measuring rod 1, 1 ′ is fixed in the vicinity of the tip of the stem column 24. In FIG. 5, assuming that it is not easy to directly fix the linear member 3 to the structural pillar 24, the linear member 3 is fixed to the structural pillar 24 via the fixing member 25. You may fix to the true pillar 24 directly.

  Then, the construction pillar 24 is built. Along with this, the front end of the structural pillar 24 gradually moves downward in the built-in hole 21. The current position of the true pillar 24 is irradiated with the laser beam to the linear member 3 so as to intersect at least the first direction and the second direction between the positions separated from the structure. 3, measuring the current position of the linear member 3, fixing the linear member 3 to the structure based on the reference position of the linear member 3, the current position of the linear member 3, and the length of the linear member 3. Measured by deriving the position.

Specifically, first, in each measuring rod 1, 1 ′, the current position of the linear member 3 on the intersecting portion 12 when it reaches a certain position, that is, on the laser beam coordinate system. The calculation unit 8 calculates the passing coordinates of the linear member 3 based on the detection result of the laser displacement meter 4. This is _defined as (L _x1 , L _y1 ) and (L _x2 , L _y2 ).

Next, the calculation unit 8 generates the reference positions (X ₀₁ , Y ₀₁ ) and (X ₀₂ , Y ₀₂ ) of the linear member 3 and the current positions (L _x1 , L _y1 ), (L _x2 ) of the linear member 3. , L _y2 ), and the amount of displacement in the laser optical axis X _L and Y _L directions in the laser beam coordinate system is calculated.

Here, as shown in FIG. 3, the side line 2a of the measuring rod ₁ is parallel to the laser beam axis XL of the laser beam coordinate system. Further, the side line 2a of the measuring rod ₁ is arranged so as to rotate from the real coordinate system according to the difference between the distances L _a and L _b from the axis XR. Therefore, in order to convert the displacement amount in the laser beam coordinate system into a value in the actual coordinate system, that is, to correct the rotation, the calculation unit 8 performs the following calculation. First, the rotation angle phi ₁ measurement tower 1, is calculated as follows. Here, B is the length of the side line 2a of the measuring rod 1 in the axis _XL direction.

  Thereby, the calculating part 8 calculates the displacement amount in a real coordinate system like following Formula.

The calculation unit 8 calculates the displacement amount in the real coordinate system of the second measuring rod 1 ′ as in Equation 3 as follows. φ ₂ is the angle of rotation of the second unit of measurement tower 1 '.

  The calculation unit 8 calculates the positions of the leading ends 3a of the linear members 3 in the real coordinate system of the measuring rods 1 and 1 ′ from the equations 3 and 4 as follows. Here, L is the distance in the vertical direction between the linear member delivery point 6a and the laser displacement meter 4, that is, the laser beams 10 and 11 transmitted from the light transmission units 4a and 4b. Further, LL is the distance from the linear member delivery point 6a shown in FIG. 5 to the fixed position of the front end 3a of the linear member 3 to the stem 24, that is, the linear member delivery point of the linear member 3. It is the length from 6a.

  In the equation 5, strictly speaking, the length of the linear member 3 from the linear member sending point 6a to the position where the laser beams 10, 11 and the linear member 3 intersect should be used as the value of L. It is. However, in the first embodiment, when the design rods 1 and 1 ′ are placed near the position where the structural pillar 24 is built, the vertical direction of the linear member delivery point 6a and the linear member 3 form. Since the angle is very small, the distance between the linear member delivery point 6a and the laser displacement meter 4 in the vertical direction and the linear member 3 from the linear member delivery point 6a to the intersection 12 are actually measured. The difference in length is very small compared to the distance from the linear member delivery point 6a to the tip of the structural pillar 24, and is in the range of calculation errors. Therefore, in Equation 5, a fixed value is used as the value of L, that is, the distance in the vertical direction between the linear member delivery point 6a and the laser displacement meter 4 is used.

Next, the calculation unit 8 calculates the center position of the construction column 24 in the real coordinate system from the position in the real coordinate system of the tip 3a of the linear member 3 of each measuring rod 1, 1 ′. Figure 6 shows the fastening condition of the tip 3a of the linear member 3 against構真pillar 24 is a top view of a portion viewed in cross section with the center position of構真post 24 as the origin O _P, the axis X _P, Y _This is to explain the true prism coordinate system represented by _P. As described above, the distal end 3 a of the linear member 3 is fixed to the construction pillar 24 via the fixing member 25. When the coordinate values in the true column coordinate system of the fixed positions of the tips 3a of the linear members 3 of the measuring rods ₁ and _{1 ′} are (X ₁ , Y ₁ ) and (X ₂ , Y ₂ ), the origin O The distances L ₁ and L ₂ from _P to each connection position are as follows.

In order to derive the center position of the structural pillar 24 in the real coordinate system, the positions (X ₁ , Y ₁ ), (X ₂ , Y ₂ ), the coordinates at the distances L ₁ and L ₂ may be calculated. The coordinates _(x s, _{y s)} When, calculation unit 8 _is calculated as follows x s, the _{y s.} First, the pseudo-range difference is expressed as follows.

  When Equation 7 is converted into a linear approximate expression, the following expression is obtained.

  From Equations 7 and 8, the equation can be modified as follows.

  That is, a solution can be obtained by the following equation.

  When the above equation is transformed, the following equation is obtained.

  The calculation results dx and dy of Expression 13 are substituted into the following expression, and the calculation is repeated until dx and dy converge.

This convergence value becomes the center position (x _s , y _s ) of the true pillar 24.

The calculation unit 8 calculates the center position of the true pillar 24 as described above, and at the same time, calculates the twist angle θ of the true pillar 24, that is, how much the true pillar 24 is twisted. . The difference U _x , U _y in the true prism coordinate system and the difference V _x , V _y in the real coordinate system between the fixed positions of the tip 3a of the linear member 3 of each measuring rod 1, 1 ′ are It is expressed as follows.

The calculation unit 8 calculates the torsion angle θ from U _x , U _y , V _x , and V _y as follows.

  The display unit 9 displays the center position and the twist angle of the true pillar 24 calculated by the calculation unit 8. Based on the information displayed on the display unit 9, using a jack or the like installed between the outer surface of the structural pillar 24 and the wall of the built-in hole 21, the position and twist angle of the structural pillar 24 are used. To correct.

  Next, the operation and effect of the position measurement method will be described.

  According to the position measuring method as described above, the linear member is detected by detecting the difference between the predetermined reference position of the linear member 3 on the laser displacement meter 4 and the current position of the linear member 3. The fixed position to the three structural pillars 24 is calculated, and the center position of the structural pillar 24 is derived. The position of the linear member 3 is detected instantaneously by the laser displacement meter 4. Further, the derivation of the center position of the true column 24 based on the detection result performed by the calculation unit 8 does not require much calculation time.

  Therefore, it is possible to easily and accurately measure the position of the true pillar 24 in real time in a short time.

  In addition, since it is possible to perform measurement simply by fixing the linear member 3 to the structural pillar 24, it is difficult to affect the construction. Therefore, it is possible to perform the construction while controlling the accuracy by performing the measurement. It is.

  In addition, since only the linear member 3 is used as the measurement material, no large-scale advance preparation is necessary, there are few restrictions on the measurement space, and the equipment removal process after the measurement is simple. There is no need for waterproofing. Therefore, there is little time influence on the construction plan and actual construction.

  In addition, two measuring rods 1 and 1 ′ are used to measure the positions of two points of the true pillar 24 in the real coordinate system, and the calculation is performed based on the measured positions. For this reason, it is possible to calculate the twist angle at the same time as deriving the center position of the true pillar 24. A slab is coupled to the built-in column 24 in a subsequent construction process. For this reason, the construction pillar 24 is provided with a metal fitting for slab joining. Since it is necessary to arrange the metal fittings in the direction as planned, it is important to adjust the torsion of the structural pillar 24. According to the first embodiment, as described above, since the torsion angle can be calculated at the same time as calculating the center position of the stem column 24, it is not necessary to measure the torsion angle separately by visual observation or the like. Therefore, construction can be performed quickly.

  In addition, the derivation of the center position of the truth column 24 from the two positions of the truth column 24 in the real coordinate system is performed based on the distances from these two positions. Therefore, the fixed position of the tip 3a of each linear member 3 with respect to the center position of the structural pillar 24 does not need to be symmetric with respect to the center, for example, and may be at an arbitrary position. As a result, even if there is a design situation in which the linear member 3 cannot be fixed symmetrically with respect to the center around the structural pillar 24 regardless of the cross-sectional shape of the structural pillar 24. The center position of the true pillar 24 can be measured without being influenced by these. Thereby, the versatility of construction increases.

For each of the two measuring rods 1 and 1 ′, the position (X _s1 , Y _s1 ), (X _s2 , Y _s2 ) of the linear member delivery point 6a in the real coordinate system, and the measuring rod 1, Since the rotation angles φ ₁ and φ ₂ of ₁ ′ are individually measured and used for the subsequent calculation, the two measuring rods ₁ and ₁ ′ are at arbitrary positions on the real coordinate system at arbitrary angles. It is possible to install them independently of each other. For example, even if the position where the structural pillar 24 is built is at the corner of the structural building and there are walls in the two directions, the measuring rods 1, 1 'are placed in each of the remaining two directions, The center position of the true pillar 24 can be measured. Thereby, the flexibility of construction increases.

  Next, with reference to FIGS. 7 to 11, the method shown as the second embodiment in which the center position of the end of the true pillar is measured using the measuring rod 1 described above will be described. Also in the second embodiment, as in the first embodiment, the center position and torsion angle of the structural pillar are measured using the measuring rod 1 shown in FIG. The difference between the second embodiment and the first embodiment is that the measuring rod 1 is calibrated before the measurement according to the first embodiment is performed.

  The measuring rod 1 is calibrated by the following three procedures. First, the angle between the laser optical axes is calibrated so that the two laser optical axes are orthogonal to each other. Next, the movement direction is calibrated so that the movement direction of the laser displacement meter 4 is the same in each direction of the two laser optical axes. Finally, calibration is performed so that a measuring device including the laser displacement meter 4, that is, a reference line installed in the measuring rod 1 is parallel to one direction of the two laser optical axes. Hereinafter, these calibration methods will be described in order.

First, the angle between the laser optical axes is calibrated so that the two laser optical axes are orthogonal to each other. That is, calibration is performed so that the axes X _L and Y _{L of the} laser beam coordinate system shown in FIG. 2 are orthogonal to each other. This calibration method is based on a method for detecting a relative angle in two-dimensional measurement using a laser displacement meter, which is described in Japanese Patent Application Laid-Open No. 2-126107 by the applicant. Details are described below.

  In this configuration, as shown in FIG. 7, a square column 30 having a square cross-sectional shape is used. The prism 30 is positioned at the intersection 12 so as to be perpendicular to the laser optical axis.

At this time, the laser displacement gauge 4, the laser optical axis _X L, in each direction of the _{Y L} direction, the value of the detected prism 30 is assumed to be _d x, _{d y.} If the laser optical axes X _L and Y _L are exactly orthogonal, d _x and _dy have the same value. That, d _x, the difference in d _y, derives the degree of inclination, which is used for calibration.

Now, let the length of the diagonal line be d in the horizontal cross section of the prism 30. As described _above, when measuring the d x, _{d y, d,} between d x, _{d y,} the following equation is established. As shown in FIG. 7, α is an angle formed by the direction perpendicular to the laser beam 11 transmitted by the Y-axis direction light transmitting unit 4 b and the diagonal line of the prism 30. Β is an angle formed by a direction perpendicular to the laser beam 10 transmitted by the X-axis direction light transmitting unit 4 a and a diagonal line of the prism 30.

That is, the laser optical axes X _L and Y _L are deviated from 90 ° by the value of α−β. The calculation unit 8 performs the above calculation and displays the result on the display unit 9. Based on this, the angle formed by the laser optical axes X _L and Y _L is corrected by α-β degrees.

Next, the moving direction of the laser displacement meter 4 is calibrated so that the moving direction of the laser displacement meter 4 is the same in each direction of the two laser optical axes. That is, calibration is performed so that the moving direction of the sensor table is parallel to the laser optical axes X _L and Y _{L in} the laser light coordinate system.

  As shown in FIG. 5, the measuring rod 1 tensions the linear member 3 between the distal end 3a of the linear member 3 fixed in the vicinity of the distal end of the stem 24 and the linear member delivery point 6a. When the linear member 3 passes through the intersection 12 of the laser displacement meter 4, it must be installed. In many cases, the widths of the laser beams 10 and 11 transmitted by the light transmitting units 4a and 4b of the laser displacement meter 4 are about several tens of mm. That is, the intersection 12 is a square having a side of about 60 mm.

  On the other hand, the built-in depth of the structural pillar 24 is several tens of meters, and the size of the measuring rod 1 is such that one side of the housing exceeds 1 m. Further, the measuring rod 1 has a weight 5 for tensioning the linear member 3, and the measuring rod 1 is moved along with the tip 3a of the moving linear member 3 when the structural pillar 24 is built. It is desirable to have a sufficient weight so that the measuring rod 1 may have a considerable weight. It is difficult to adjust the position of the measuring rod 1 so that the linear member 3 passes through the intersecting portion 12.

For the purpose of facilitating the above adjustment, that is, after the measuring rod 1 is installed, the sensor table of the measuring rod 1 is arranged in the measuring rod 1 so that the linear member 3 can pass through the intersection 12. It is installed to be movable. Here, if the moving direction of the sensor table is deviated from the laser beam axes X _L and Y _L in the laser beam coordinate system, the directions of the laser beam axes X _L and Y _{L in} the laser beam coordinate system are changed when the sensor table is moved. It may shift. That is, the calibration of the moving direction of the laser displacement meter 4 is for preventing the deviation of the directions of the laser optical axes X _L and Y _L in the adjustment of the sensor table when the measuring rod 1 is installed. .

  A specific procedure for calibrating the moving direction of the laser displacement meter 4 will be described.

  First, in actual measurement, it is desirable to use, for example, a wire as the linear member 3, but at the time of calibration, this is replaced or superposed on the linear member 3, and the tegs are moved forward as shown in FIG. 1. Install on sheave 6. A weight is attached to the tip of the teg, and the tegs separated from the front sheave 6 at the linear member feed point 6a of the front sheave 6 are tensioned in the vertical direction by the weight of the weight. The weight is put into a tank of water and attenuated. Further, the sensor table is moved so that the Teggs passes through the crossing portion 12 to be an initial position.

In this state, the sensor table is moved in the laser light axis _XL direction of the laser light coordinate system. In FIG. 8, let the passing point of the Tegs before moving the sensor table be P _x1 , and let the passing point of the Tegs after moving the sensor table be P _x2 . It is assumed that the detected values on the laser optical axis Y _L in each of P _x1 and P _x2 are L _y1 and L _y2 . Also, _let the movement amount be M _x .

Thereafter, the sensor table is moved to the laser beam axis Y _L direction of the laser beam coordinate system. In FIG. 8, the passing point of the Tegs before moving the sensor table is P _y1 , and the passing point of the Tegs after moving the sensor table is P _y2 . In each of the _{P y1,} P _y2, detected value on the laser optical axis _{X L} is assumed to be _{L x1, L x2.} Further, the movement amount and _{M y.}

At this time, if L _y1 and L _y2 are equal and L _x1 and L _x2 are equal, the direction of movement of the sensor table and the laser beam axes X _L and Y _{L of} the laser beam coordinate system are in the same direction. .

When the laser beam axes X _L and Y _{L in the} laser beam coordinate system are not in the same direction as the sensor table movement direction, the following equation may be satisfied.

In this case, the sensor table, and the movement axis of the laser optical axis X _L direction, the movement axis of the laser beam axis Y _L direction, respectively, rotated by θ represented by the following equation.

In addition, the laser optical axes X _L and Y _L in the laser beam coordinate system may not be in the same direction and may not satisfy Equation 18. In this case, the movement axis of the laser optical axis X _L direction, or movement axis of the laser beam axis Y _L direction, is rotated by φ represented by the following equation, the two movement axes is calibrated to orthogonal.

The calculation unit 8 performs the above calculation and displays the measurement result on the display unit 9. Based on this, calibration and measurement are repeated until L _y1 and L _y2 are equal and L _x1 and L _x2 are equal. As a result, calibration is performed so that the moving direction of the sensor table is parallel to the laser optical axes X _L and Y _{L of} the laser light coordinate system.

Finally, calibration is performed so that a measuring apparatus including a laser displacement meter, that is, a reference line installed in the measuring rod 1 is parallel to one of the two laser optical axes. That is, a shaft X _L of the laser beam coordinate system, the lateral line 2a of measuring tower 1 shown in FIG. 3 calibrated in parallel.

In the first embodiment, as shown in FIG. 3, the inclination between the axis X _R of the real coordinate system, the axis X _L of the laser beam coordinate system, the distance from the axis X _R of the side tracks 2a L _a, based on the _{L b,} it is calculated. That is, the first embodiment is based on the assumption that the laser displacement gauge 4 is disposed so that the laser optical axis X _L of the laser beam coordinate system is parallel to the lateral line 2a. Therefore, the laser optical axis X _L of the laser beam coordinate system, lateral line 2a of measuring tower 1, it is important that the parallel with high precision.

  A specific procedure will be described below. First, as shown in FIG. 9 (a), the measuring rod 1 is installed at an arbitrary place, and the installation surface of the measuring rod 1 is parallel to the side line 2a so as to pass directly below the linear member delivery point 6a. The line 31 is marked. Thereafter, similarly to the calibration of the moving direction of the sensor table, the teg 32 is placed on the front sheave 6 shown in FIG. Next, as shown in FIG. 9 (b), in a state where the gut 32 is suspended by being tensioned vertically downward from the linear member delivery point 6a, from the laser displacement meter 4 of the gut 32, for example, about 10 cm, The part slightly above is fixed with the fixing sleeve 33.

Thereafter, an arbitrary part of the tees 32 below the part fixed by the fixing sleeve 33 is fixed to an arbitrary point 34 on the line 31 so that the tegus 32 between the fixing sleeve 33 and the point 34 is tensioned. Adjust to. Then, as shown in FIG. 10, the laser displacement meter 4 measures the passing position P ₃₄ of the teg 32.

Further, an arbitrary part of the tees 32 that is lower than the part fixed by the fixing sleeve 33 is fixed to an arbitrary point 35 on the line 31 that is different from the point 34, and between the fixing sleeve 33 and the point 35. Adjust so that Tegs 32 is tense. Then, the laser displacement meter 4 measures the passing position P ₃₅ of the teg 32.

When the laser beam axis _{Y L} direction of the coordinate of P ₃₄ the laser beam axis _{Y L} direction coordinates of _{L y1, P 35} and _{L y2,} since the laser optical axis _{X L} and _{Y L} are corrected so as to be orthogonal , if the parallel laser optical axis _{X L} and the lateral line _{2a, L y1} and _{L y2} should be equal. If there is no If equal _{L y1} and _{L y2,} the laser optical axis _{X L} does not become parallel to the lateral line 2a, it is necessary calibration.

The calculation unit 8 calculates the rotation angle ω to be calibrated based on this measurement value. A laser optical axis _{X L} direction of the coordinate of P _34, when the difference of the laser optical axis _{X L} direction of the coordinate of _{P 35} to _{L XX,} the rotation angle ω is obtained by the following expression.

The measurement result is displayed on the display unit 9. Based on this, calibrated so that the laser optical axis X _L is parallel to the lateral line 2a. Specifically, as shown in FIG. 11, a triangular prism-shaped contact plate 36 having one internal angle ω is manufactured and placed outside the side line 2 a for calibration.

  After the measuring rod 1 is calibrated according to the above procedure, the center position of the structural pillar is measured by the method described in the first embodiment. At this time, measurement is performed by using the outer surface 36a of the contact plate 36, which has an angle ω with the side line 2a, as the newly calibrated side line 2a.

  As described above, in the second embodiment, the measuring rod 1 is calibrated with high accuracy before performing the measurement in the first embodiment. Thereby, since the X axis and Y axis of the laser coordinate system and the real coordinate system are calibrated in parallel with high accuracy, it is possible to measure the center position and torsion angle of the structural pillar with high accuracy. .

  Also, in order to calibrate the moving direction of the laser displacement meter so that the moving direction of the laser displacement meter is the same in each direction of the two laser optical axes, the linear member is placed in the intersection after the laser displacement meter is installed. Even when the laser displacement meter is moved so as to be positioned, it is possible to move without impairing the measurement accuracy. Therefore, accurate measurement is possible.

  In addition, in order to calibrate the reference line installed in the measuring device equipped with the laser displacement meter so that one of the two laser optical axes is parallel, the measuring rod can be moved at any position on the construction site. The position can be accurately measured.

  Further, in the calibration, for example, as a substitute for the linear member 3 in which a wire is used, a teg 32 that is lightweight and can be easily put into a tension state by applying a light force is used. Therefore, the calibration is easily performed. Can do.

  It should be noted that the second embodiment can accurately measure the position of the true pillar in real time in a short time. It is possible to perform construction, formulation of construction plans, actual construction has little time impact, construction can be performed quickly, versatility increases, construction flexibility increases Needless to say, various effects of the first embodiment can be obtained in the same manner.

  Next, with reference to FIGS. 12 to 14, the method shown as the third embodiment for measuring the posture of a structure to be submerged on the sea floor using a measuring rod will be described. That is, the structure is a structure that sinks on the seabed, and the linear member is fixed to the upper surface of the structure that sinks on the seabed, and based on the current position of the linear member and the vertical line as described above, The structure to be submerged on the sea floor is installed at the planned position in the sea while measuring the current position of the subsidence structure. FIG. 12 is a view showing a measuring rod 40 used for position measurement in the structure position measuring method shown as the third embodiment of the present invention. In the third embodiment, the position of the submerged box is measured.

  The difference between the measuring rod 1 shown in FIG. 1 and the measuring rod 40 shown in FIG. 1 is that, in the measuring rod 1, a weight 5 is fixed to the rear end 3b of the linear member 3 so On the other hand, in the measuring rod 40, an automatic tension winch 41 is connected to the tip of the measuring sheave 40 vertically downward from the rear sheave 7, instead of the weight 5, and an encoder 42 is provided. It is to have.

  The automatic tension winch 41 is a winch that unwinds the linear member 3 when a force equal to or higher than a predetermined tension is applied, and winds the linear member 3 when the force is smaller than the predetermined tension. It is possible to always apply a constant tension to the shaped member 3. The encoder 42 measures the length of the linear member 3 unwound from the automatic tension winch 41. The linear member 3 may be a wire as in the first and second embodiments.

  In the third embodiment, the attitude of the sinking box is measured using three measuring rods 40. FIG. 13 shows the installation situation of the measuring rod 40. Three measuring rods 40 are installed on the work boat 43. The work ship 43 is for installing a sink box 44, and the tip 3 a of each linear member 3 of the three measuring rods 40 is fixed to the upper surface of the sink box 44. Two GPS 45 are installed in the work ship 43, thereby measuring the three-dimensional coordinates and the posture, that is, the direction of the work ship 43.

  The specific measurement of the position and orientation of the sinking box 44 is performed as follows.

First, according to the procedure similar to that shown in Equations 1 to 5 of the first embodiment, the fixing position (X _a , Y _a , Z _a ), (X _b , Y _b , Z _b ), (X _c , Y _c , Z _c ) are measured.

  Assuming that the plane equation of the fixed position of the linear member 3 in the submerged box 44 is Ax + y + Bz + C = 0, the following equation is established.

FIG. 14 shows the relationship between the upper surface 44a of the sinking box 44 and the target position 46 where the upper surface 44a is to be installed. Considering the case where the upper surface 44a is rectangular, two points (X ₁ , Y ₁ , Z ₁ ), (X ₂ , Y ₂ , Z ₂ ) on the center line 46a in the length direction of the target position 46, and the width For one point (X ₃ , Y ₃ , Z ₃ ) on the direction center line 46b, the calculation unit 8 calculates the distance between these points and the upper surface 44a by the following equation.

  In this way, the distance from each of the above points is calculated, and the posture of the sinking box 44 is grasped.

  As described above, in the third embodiment, since the three measuring rods 40 are used, in addition to the position of the submerged box and the twist angle, the installation status such as the flatness, that is, the inclination with respect to the target plane position is grasped. it can. Thereby, it becomes possible to install the submerged box easily.

  The third embodiment allows real-time, accurate position measurement of the true pillar to be carried out easily and in a short time. It is possible to formulate construction plans, have less time impact on actual construction, be able to perform construction quickly, increase versatility, and increase construction flexibility. Needless to say, various effects of the first embodiment can be similarly obtained.

  In the measuring rods 1 and 40 described above, the sensor table is moved to position the linear member 3 in the intersecting portion 12 of the laser displacement meter 4, but in addition to this, the front sheave 6 You may enable it to adjust the position. Thereby, the installation of the measuring rods 1 and 40 becomes easier, and the measurement can be performed more easily.

  Moreover, in said 1st, 2nd embodiment, although each position of the construction pillar in a built-in hole and the submerged submerged box in 3rd Embodiment was measured, measurement object is restricted to the above. Needless to say, other long bodies such as piles and pillars and other structures may be used.

  The first, second, and third embodiments may be used in combination with each other. For example, in the first and second embodiments, the measuring rod 40 used in the third embodiment may be used. Calibration as shown in the form may be performed.

  The preferred embodiments of the present invention have been described in detail above. However, those skilled in the art will understand that various modifications and equivalent embodiments are possible from this. .

  Therefore, the scope of rights of the present invention is not limited to this, and various modifications and improvements of those skilled in the art using the basic concept of the present invention described in the claims are also included in the present invention.

1, 40 Measuring rod 2 Housing 3 Linear member (wire)
4 Laser displacement meter 5, 22 Weight 6 Front sheave 7 Back sheave 8 Calculation unit 9 Display unit 10, 11 Laser beam 12 Intersection 20 Designed position of built-up column 21 Built-in hole 23 Container 24 Built-up column 25 Fixing member 30 Square column 32 Tegs 33 Fixed sleeve 36 Batch plate 41 Automatic tension winch 42 Encoder 43 Work boat 44 Submerged box 45 GPS

Claims (8)

When installing the structure at the planned location,
Stretching a linear member between a position spaced from the planned position and the structure;
Identifying the current position of the structure based on the reference position of the linear member and the current position of the linear member;
A method for measuring the position of a structure, including: Measuring the current position of the linear member by irradiating the linear member with laser light so as to intersect at least one direction and two directions between the structure and the separated position. ,
Deriving a fixed position of the linear member to the structure based on a reference position of the linear member, a current position of the linear member, and a length of the linear member;
The position measuring method for a structure according to claim 1, comprising: The structure is a long body, the linear member is a wire, and the wire is fixed near the tip of the long body,
The position measurement method according to claim 1 or 2, wherein the long position is measured at the planned position in the liquid while measuring the current position of the long body based on the current position and the vertical line of the wire. How to install a structure to install a body. The structure is a structure to be submerged on the sea floor, the linear member is a wire, and the wire is fixed to an upper surface of the structure to be submerged on the sea floor;
The position measurement method for a structure according to claim 1 or 2, wherein the current position of the structure submerged on the sea floor is measured based on the current position and the vertical line of the wire, and the planned position in the sea is A structure installation method that installs structures to be submerged on the sea floor. When installing the structure at the planned location,
Stretching a linear member between a position spaced from the planned position and the structure;
Measuring the current position of the linear member by irradiating the linear member with laser light so as to intersect at least one direction and two directions between the structure and the separated position. ,
Deriving a fixed position of the linear member to the structure based on a reference position of the linear member, a current position of the linear member, and a length of the linear member;
A method for measuring the position of a structure, including:
Before measuring the current position of the linear member, calibrating the angle between the laser beams so that the direction of 1 and the direction of 2 are orthogonal to each other;
A method for measuring the position of a structure, further comprising: After calibrating the angle between the laser beams,
Calibrating the moving direction of the light source so that the light source of the laser light moves in the direction of 1 and 2;
Calibrating so that the reference line installed in the measuring device including the light source of the laser beam and the direction of the 1 are parallel;
Moving the light source to position the laser beam to irradiate the linear member;
The method for measuring a position of a structure according to claim 5, further comprising: A structure position measuring device used when installing a structure at a predetermined planned position,
A linear member stretched between the position separated from the planned position and the structure;
Between the structure and the separated position, the linear member is irradiated with laser light so as to intersect from at least one direction and two directions, and the current position of the linear member is measured. A laser displacement meter;
A calculation unit for deriving a fixed position of the linear member to the structure based on a reference position of the linear member, a current position of the linear member, and a length of the linear member;
An apparatus for measuring the position of a structure. The position measuring apparatus for a structure according to claim 7, wherein the laser displacement meter is capable of calibrating the angle between the laser beams so that the direction 1 and the direction 2 are orthogonal to each other.

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