JP2017090397A - Measurement device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measurement device that detects the uneven displacement of a steel tower foundation from a change in physical relationship between the first spot of the first main post of a steel tower, the second spot of a second main post, and a third spot in the direction of the foundation part of the second main post to the second spot.SOLUTION: The measurement device comprises: a wire 100 attached between a first spot A and a second spot B via a second spot; a wire fastener 200 for putting and fixing wire to the second spot; a tension adjustment device 300 functioning so as to pull the wire with prescribed tension; a distance displacement measurement unit T1 for measuring the amount of wire position displacement between the first spot and the third spot in order to detect the amount of distance displacement between the first spot and the second spot of the steel tower; and an angle displacement measurement unit T2 for measuring the amount of displacement of an angle formed by the wire at the second spot in order to detect the amount of displacement of an angle formed by a line segment linking the first spot and the second spot and a line segment linking the second spot and the third spot.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a measuring apparatus.

  The steel tower structure is assembled by connecting a plurality of steel tower materials with bolts on the premise that the foundation of the steel tower is fixed in a certain positional relationship. In general, the tolerance of the tower is only the tolerance of the bolts and bolt holes connecting the tower materials, and the positional relationship of the foundation of the tower changes due to ground fluctuation (hereinafter referred to as "displacement of the tower foundation"). In such a case, the steel tower material may be damaged or deformed, and the steel tower may collapse.

  Therefore, in order to prevent damage to the steel tower material, it has been studied to provide a sensor for monitoring the state of displacement of the steel tower material (for example, Patent Document 1).

JP-A-11-051787

  However, it is necessary to measure not only the displacement of the steel tower material but also the change in the positional relationship of the steel tower foundation in order to accurately grasp the undue displacement of the steel tower foundation and perform the repair work according to the situation. In this case, the current situation is that the steel tower structure must be marked in advance, and the operator must take a method of periodically measuring changes in the position.

  Then, an object of this invention is to provide the measuring apparatus which an operator can monitor the non-uniform displacement of a steel tower foundation more easily.

  The main present invention for solving the above-described problems is that the first point of the first main column of the steel tower, the second point of the second main column, and the direction of the base portion of the second main column with respect to the second point. A measuring device for detecting an inconsistent displacement of a steel tower foundation from a change in the positional relationship of a third point, wherein one end is attached to the first point and the other end is attached to the third point via the second point. The wire, a wire hook that is attached to the second point and holds the wire to the second point, a tension adjusting device that operates to pull the wire with a predetermined tension, In order to detect the amount of displacement of the distance between the first point and the second point of the tower based on the displacement, it is attached to the wire hanging fastener, and between the first point and the third point. Measure the displacement of the wire position A distance displacement measuring unit, a line segment connecting the first point and the second point of the tower based on the indefinite displacement of the tower foundation, and a line segment connecting the second point and the third point An angular displacement measuring unit that is attached to the wire hanging fastener and measures the amount of angular displacement of the wire at the second point in order to detect the amount of angular displacement of the wire.

  Other features of the present invention will become apparent from the accompanying drawings and the description of this specification.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible for an operator to monitor the non-uniform displacement of a steel tower foundation more easily.

It is a perspective view which shows the state which attached the measuring apparatus which concerns on this embodiment to the steel tower. It is a figure which shows the structure in C point of the measuring apparatus which concerns on this embodiment. It is a figure which shows the structure in A point of the measuring apparatus which concerns on this embodiment. It is another figure which shows the structure in A point of the measuring apparatus which concerns on this embodiment. It is a figure which shows the structure in B point of the measuring apparatus which concerns on this embodiment. It is another figure which shows the structure in the B point of the measuring apparatus which concerns on this embodiment. It is another figure which shows the structure in the B point of the measuring apparatus which concerns on this embodiment. It is another figure which shows the structure in the B point of the measuring apparatus which concerns on this embodiment. In the measuring apparatus which concerns on this embodiment, it is a figure for demonstrating the method to detect the amount of horizontal displacement between the main pillars of a steel tower using a distance displacement measurement part. In the measuring apparatus which concerns on this embodiment, it is a figure for demonstrating the method to detect the amount of displacement of the angle which the wire in a 2nd point makes | forms using an angular displacement measurement part. In the measuring apparatus which concerns on this embodiment, it is an image figure which shows the non-uniform displacement of the steel tower foundation estimated from the measurement result of a distance displacement measuring part and an angular displacement measuring part. In the measuring apparatus which concerns on this embodiment, it is another image figure which shows the non-uniform displacement of the steel tower foundation estimated from the measurement result of a distance displacement measuring part and an angular displacement measuring part.

  At least the following matters will become apparent from the description of this specification and the accompanying drawings.

=== About Configuration of Measuring Apparatus ===
The measuring apparatus according to the present embodiment monitors the change in the positional relationship between the main pillars of the steel tower based on the undetermined displacement of the steel tower foundation, in particular, the amount of horizontal displacement and the amount of vertical displacement between the main pillars of the steel tower. It makes monitoring easier.

  Hereinafter, the configuration of the measuring apparatus according to the present embodiment will be described with reference to FIGS.

  FIG. 1 is a perspective view showing a state in which the measuring apparatus according to the present embodiment is attached to a steel tower. In the figure, the Z axis is a height direction extending vertically from the ground, the X axis is a direction extending from point B to point A of the tower M, and the Y axis is an axis indicating a direction perpendicular to the X axis and the Z axis. Yes (same for other figures). In the following description, they are simply expressed as “X direction”, “Y direction”, and “Z direction”, respectively, the direction indicated by the arrow is indicated as + direction, and the direction opposite to the arrow is indicated as − direction.

  The steel tower M to be measured according to the present embodiment is formed in a quadrangular pyramid shape by four legs of the main pillar M1, the main pillar M2, the main pillar M3, and the main pillar M4, and is connected to a base portion installed on the ground. Yes.

  The measurement apparatus according to the present embodiment includes a wire 100, a first attachment part 200, a tension adjustment device 300, a second attachment part 400, a distance displacement measurement part T1, and an angular displacement measurement part T2.

  One end of the wire 100 is attached to a point C which is the foundation of the steel tower M, and the other end is connected to a point A of the steel tower M through a point B in order to detect a change in the positional relationship between the three points of the steel tower M. It is configured to be attached. In addition, A point, B point, and C point are respectively the predetermined position of the main pillar M3 of the tower M, the position of the main pillar M1 whose height from the ground is substantially the same as the A point, and the base part of the main pillar M1. Represents the position.

  And the measuring apparatus which concerns on this embodiment has attached the wire 100 to the steel tower so that a position may change in connection with the non-uniform displacement of a steel tower foundation, and detects the non-uniform displacement of a steel tower foundation from the change of the positional relationship of the wire 100. To do. Specifically, the distance displacement measuring unit T1 detects the amount of horizontal displacement between the main columns of the steel tower M, and the angular displacement measuring unit T2 detects the line segment connecting the points A and B of the steel tower M, the B point, and the C By detecting the displacement amount of the angle formed by the line segment connecting the points, the change in the positional relationship of the point A with respect to the point C, that is, the displacement amount in the vertical direction between the main columns of the steel tower is detected. Hereinafter, an angle formed by a line segment connecting the A point and the B point of the steel tower M and a line segment connecting the B point and the C point is referred to as an “angle of the B point”.

  One end of the wire 100 is attached to the point C via the tension adjusting device 300, the other end is attached to the point A via the second attachment part 400, and the wire hanging fastener of the first attachment part 200 at the point B The configuration is hung on 201.

  The wire 100 may be any material as long as it has a small elasticity and a certain strength, and for example, a stranded wire made of a stainless material can be used.

  In FIG. 2, the structure in C point of the measuring apparatus which concerns on this embodiment is shown.

  The tension adjusting device 300 is connected between the wire 100 and the foundation portion (C point) of the steel tower M, and attaches one end of the wire 100 to the C point. And the tension adjustment apparatus 300 moves the wire 100 up and down so that tension | tensile_strength becomes fixed (for example, 50 kg), when the disparate displacement of a steel tower foundation arises and the position of the wire 100 changes.

  Specifically, the tension adjusting device 300 detects the tension at which the wire 100 is pulled, and unwinds or winds the winding 301 between the base portion of the steel tower M (point C), and the tension at which the wire 100 is pulled. Adjust to be constant. That is, when the undulation displacement of the steel tower foundation occurs, the wire 100 moves up and down according to the winding or winding of the winding 301 of the tension adjusting device 300.

  The measuring apparatus according to the present embodiment is configured to move between the point A and the point C without stretching, bending, and breaking the wire 100 by the tension adjusting device 300.

  FIG. 3A and FIG. 3B show the configuration of the measuring apparatus according to this embodiment at point A.

  The measuring apparatus according to the present embodiment includes a second attachment portion 400 as a configuration at point A.

  The second attachment portion 400 attaches one end of the wire 100 to the point A of the main pillar M3, and guides the wire 100 so that the angle can be smoothly changed at the point A when the pylon foundation is displaced indistinctly. It is an instrument.

  Specifically, the second mounting portion 400 includes a wire hook 401, a connecting pin 402, a fixing screw 403, bolts 404a and 404b, fixing members 405a and 405b, and nuts 406a and 406b.

  The second mounting portion 400 sandwiches the main pillar M3 from the + Y direction and the −Y direction with the fixing member 405a and the fixing member 405b. It is fixed to the main pillar M3 by pressing against the main pillar M3 from the + Y direction and the −Y direction.

  The fixing member 405a and the fixing member 405b are a pair of plate-like fixing brackets that sandwich the main pillar M3 from the + Y direction and the −Y direction. The fixing member 405a and the fixing member 405b are disposed so that the plate planes (surfaces having a large plate-like area) face each other in the Y direction with the main pillar M3 interposed therebetween. Further, the + X direction side of the plate planes of the fixing member 405a and the fixing member 405b is bent to the + Y side and the −Y side so as to follow the outer shape of the main pillar M3, respectively, and the plate planes of the fixing member 405a and the fixing member 405b. The bent portion is in contact with the main pillar M3.

  Further, the fixing member 405a and the fixing member 405b are provided with a hole penetrating the fixing member 405a and the fixing member 405b in the Y direction at a position in the −X direction from the contact position with the main pillar M3, and penetrate in the Y direction. Bolts 404a and 404b are fitted in the holes to be made.

  The bolts 404a and 404b are provided with a spiral groove into which the nuts 406a and 406b are fitted at one end, and a hole into which the connecting pin 402 is fitted at the other end. The bolt 404a and the bolt 404b are connected by inserting a connecting pin 402 into holes formed at both ends. In addition, the bolt 404a and the bolt 404b are engaged with the spiral groove formed at the end in a state where the bolt 404a and the bolt 404b are fitted in the holes penetrating in the Y direction of the fixing member 405a and the fixing member 405b. The nuts 406a and 406b are tightened from the outside.

  The wire hanging fastener 401 is a member that is supported by the connecting pin 402 and holds the wire 100. The wire hanging fastener 401 has a through hole extending in the Y direction, and a connecting pin 402 is inserted into and supported by the through hole. Further, the wire hanging fastener 401 is configured to be able to freely rotate around the Y axis by the configuration (in the drawing, the rotation direction is represented as R2).

  The wire 100 is fixed to the wire hook 401 by a fixing screw 403.

  In addition, by the said structure of the 2nd attachment part 400, even when a non-uniform displacement arises in a steel tower foundation, the angle of the wire 100 can change smoothly in the A point of the main pillar M3.

  FIG. 4A, FIG. 4B, FIG. 4C, and FIG. 4D show the configuration of the measuring apparatus according to the present embodiment at point B.

  The measuring apparatus according to the present embodiment includes a first mounting portion 200, a distance displacement measuring portion T1, and an angular displacement measuring portion T2 as a configuration at point B.

  The first mounting portion 200 hangs the wire 100 at the point B of the main pillar M1, and guides the wire 100 so that the angle can be smoothly changed at the point B when the pylon foundation is displaced indistinctly. It is an instrument. Moreover, the 1st attaching part 200 has the role which attaches distance displacement measuring part T1 and angular displacement measuring part T2 to B point, and determines the reference position in those measurements.

  The first attachment portion 200 is attached to the main pillar M1 by the same method as the second attachment portion 400.

  Specifically, the first attachment portion 200 includes a wire hanging fastener 201, a connecting pin 202, connection plates 203a and 203b, bolts 204, fixing members 205a and 205b, and nuts 206a and 206b.

  The first mounting portion 200 sandwiches the main column M1 from the + Y direction and the −Y direction with the fixing member 205a and the fixing member 205b, and the fixing member 205a and the fixing member 205b with the bolt 204 and the nuts 206a and 206b, respectively, in the + Y direction. And it is being fixed to the main pillar M1 by pressing on the main pillar M1 from the -Y direction.

  The fixing member 205a and the fixing member 205b are a pair of plate-like fixing fittings that sandwich the main pillar M1 from the + Y direction and the −Y direction. The fixing member 205a and the fixing member 205b are disposed so that the plate plane (surface having a large plate-like area) is opposed in the Y direction with the main pillar M1 interposed therebetween. Further, the −X direction side of the plate planes of the fixing member 205a and the fixing member 205b is bent to the + Y side and the −Y side, respectively, along the outer shape of the main pillar M1, and the plates of the fixing member 205a and the fixing member 205b. The bent portion of the plane is in contact with the main pillar M1.

  In addition, the fixing member 205a and the fixing member 205b are provided with a hole penetrating the fixing member 205a and the fixing member 205b in the Y direction at a position in the + X direction from the contact position with the main pillar M1, and penetrate in the Y direction. Bolts 204 are fitted into the holes and are tightened by nuts 206a and 206b from the outside so as to engage with spiral grooves (not shown) formed at both ends of the bolts 204.

  Then, a pair of connection plates 203a and 203b arranged so that the plate plane (surface having a large plate-like area) faces in the Y direction is fixed to the bolt 204 at a position in the + X direction. Yes. Further, a through hole extending in the Y direction is formed in the pair of connection plate 203a and connection plate 203b, and the connecting pin 202 is supported at the position of the through hole.

  Between the connection plate 203a and the connection plate 203b, a wire hook 201, a connection portion T14 of the distance displacement measuring unit T1, and an angle measuring device T22 of the angular displacement measuring unit T2 are disposed. It is supported by. That is, the connecting pin 202 is a through hole extending in the Y direction of the connection plates 203a and 203b, a through hole extending in the Y direction of the wire hanging fastener 201, a through hole extending in the Y direction of the connection portion T14 of the distance displacement measuring unit T1, The angular displacement measuring unit T2 is disposed so as to pass through a through hole extending in the Y direction of the angle measuring device T22, and supports the connecting plate 203a and the connecting plate 203b so that they can freely rotate around the Y axis. (The direction of rotation is represented as R3 in the figure).

  The wire hanging fastener 201 is configured to be able to move the wire 100 to the A point side or the C point side even when the wire 100 is hung at the B point and a discontinuous displacement occurs in the steel tower foundation.

  In addition, due to the configuration of the first mounting portion 200, the wire 100 can smoothly change the angle even when the pylon foundation is displaced in a discontinuous manner and the angle at the point B of the pylon is displaced. Therefore, it becomes possible to measure more accurately when measuring the angle formed by the wire 100 at the point B using the angular displacement measuring unit T2.

  The distance displacement measuring unit T1 determines the horizontal displacement amount between the main pillars of the tower (points A and B) based on the displacement amount of the position between the points A and C of the wire 100 before and after the undue displacement of the tower foundation. This is a measuring instrument for detecting the displacement of the distance of the point.

  Specifically, the distance displacement measurement unit T1 includes a support base T10, a moving body T11, a distance measurement device T12, support pulleys T13a and T13b, and a connection unit T14.

  The distance displacement measuring unit T1 is supported by the wire hanging fastener 201 via the connecting portion T14 so as to be rotatable around the Y axis and supported by the wire 100 via the supporting pulleys T13a and T13b. ing. Further, the distance measuring device T12, the support pulleys T13a and T13b, and the connecting portion T14 of the distance displacement measuring unit T1 are fixed to the support base T10, and these are integrally configured. That is, the distance displacement measuring unit T1 is supported at the B point so that the scale of the distance measuring device T12 is parallel to the direction in which the wire 100 extends from the B point to the A point.

  Further, the connecting portion T14 is supported by the connecting pin 202 at a position where the through hole extending in the Y direction of the connecting portion T14 and the through hole extending in the Y direction of the wire hanging fastener 201 coincide. That is, the position of the through hole extending in the Y direction of the connecting portion T14 of the distance displacement measuring portion T1 is fixed to the B point of the main column M1 regardless of the undue displacement of the steel tower foundation, and the A point side or the C point of the wire 100 This is a reference position for measuring the amount of movement to the side (hereinafter referred to as “horizontal displacement reference position”).

  The distance measuring device T12 is a ruler for measuring the amount of movement of the wire 100 toward the point A or the point C. The distance measuring device T12 is graduated with a predetermined interval in the direction of the line segment connecting the points A and B. By comparing with a mark T11a indicated by the moving body T11, the distance measuring device T12 or C The amount of movement to the point side can be measured. Details of the measurement method will be described later.

  The support pulleys T <b> 13 a and T <b> 13 b are members for supporting the distance displacement measurement unit T <b> 1 (support table T <b> 10, distance measurement device T <b> 12, connection unit T <b> 14) with the wire 100. The support pulleys T13a and T13b are pulleys installed at both ends in the X direction of the support base T10 so as to sandwich the wire 100 from above and below, respectively.

  The moving body T11 is a member that serves as a mark for indicating a change in the amount of movement of the wire 100 toward the point A or the point C, and is fixed to the wire 100 by a fixing screw T11b and integrated with the wire 100. Move (in FIG. 4B, the moving direction is represented as R4).

  The moving body T11 is disposed at a position overlapping the distance measuring device T12. That is, the distance measuring device T12 has a wire through hole extending in the X direction, and the wire 100 and the moving body T11 are passed through the wire through hole. And the mark T11a for showing the change of a horizontal position is attached | subjected to the mobile body T11, and when the wire 100 moves to the A point side or the C point side, the scale of the distance measuring device T12 and the mark T11a By comparing the positions, the amount of movement of the wire 100 toward the point A or the point C can be measured. In addition, the moving body T11 has wheels between the support base T10 in order to smoothly move in the horizontal direction.

  The angular displacement measuring unit T2 detects the displacement amount of the angle of the B point (the angle formed by the line segment connecting the point A and the B point and the line segment connecting the B point and the C point) due to the undue displacement of the tower foundation. (See FIGS. 4C and 4D). The angular displacement measuring unit T2 detects the amount of displacement of the angle by measuring the angle formed at the point B of the wire 100 before and after the undue displacement of the steel tower foundation.

  Specifically, the angular displacement measuring unit T2 includes an indicator bar T21 and an angle measuring device T22.

  Here, the indicator rod T21 and the angle measuring device T22 of the angular displacement measuring unit T2 are attached to the wire hooking tool 201 in the same manner as the distance displacement measuring unit T1. And these structures are extended by the connecting pin 202 in the Y direction of the indicator rod T21 in the Y direction, the through hole extended in the Y direction of the angle measuring device T22, and the wire hanging fastener 201 in the Y direction. The through holes are supported at the positions where they coincide. That is, the position of the through hole extending in the Y direction of the indicator rod T21 and the angle measuring device T22 is fixed at the B point of the main pillar M1, and the reference for measuring the amount of displacement of the angle formed by the wire 100 at the B point. Position (hereinafter referred to as “angular displacement reference position”).

  The indicator rod T21 is a rod-like body extending in the direction of the point C from the angular displacement reference position, and is a member for visually recognizing the amount of angular displacement at the point B of the wire 100. The indicator rod T21 is fixed to the connecting portion T14 at the angular displacement reference position. When the wire 100 is angularly displaced at the point B, the indicator rod T21 rotates integrally with the connecting portion T14 and the wire 100 around the angular displacement reference position. (In FIG. 4C, the rotation direction is represented as R5).

  The angle measuring instrument T22 is a protractor with a scale T22a for each constant angle so that an angle around the Y axis centered on the angular displacement reference position can be visually recognized. In order to measure the angle formed by the wire 100 at the point B, the angle measuring device T22 is fixed to the connection plate 203a at the angular displacement reference position and is maintained in the horizontal state (XY direction). . That is, when the wire 100 is angularly displaced at the point B, the indicator rod T21 rotates together with the wire 100, but the angle measuring device T22 is maintained in a horizontal state.

  The indicator bar T21 is arranged at a position overlapping the scale T22a of the angle measuring device T22a, and the angle formed by the wire 100 at the point B is measured by comparing the position of the indicator rod T21 and the position of the angle measuring device T22. That is, it is possible to easily measure the angular displacement θ when the pylon foundation is displaced indefinitely. The indicator bar T21 is bent so as to protrude from the back (Y direction) of the hole T22c to the front (−Y direction) of the hole T22c at the position of the hole T22c provided in the angle measuring device T22. After that, the shape extends in the direction of the point C, and is thereby arranged at a position overlapping the scale T22a of the angle measuring device T22a.

  In addition, the angle measuring device T22 is configured to move up and down in the height direction (± Z direction) manually, and extends in the horizontal direction (X direction), and the angle indicated by the pointing rod T21. It has a scale T22d with a value converted into a displacement amount in the height direction due to the stationary displacement of the steel tower foundation. By this configuration, the member T22b is moved to the position of the tip (−Z direction) of the indicator bar T21, and the positional relationship is compared with the scale T22d attached in the height direction (Z direction), thereby indicating the indicator bar T21. From the angle, the amount of displacement in the height direction due to the stationary displacement of the steel tower foundation can be confirmed.

=== About the detection method of non-uniform displacement of steel tower foundation ===
Hereinafter, with reference to FIG.5, FIG.6, FIG.7A-FIG.7B, the method to detect the nonuniform displacement of a steel tower foundation using the measuring apparatus which concerns on this embodiment is demonstrated.

  In FIG. 5, the detection method of the displacement amount of the horizontal direction between the main pillars of the steel tower by distance displacement measurement part T1 is shown. The upper diagram of FIG. 5 shows the positional relationship between the moving body T11 and the distance measuring device T12 before the undetermined displacement of the steel tower foundation occurs. Further, the lower diagram (dotted line) in FIG. 5 shows the positional relationship between the moving body T11 'and the distance measuring device T12' after the undue displacement of the steel tower foundation occurs.

  As described above, the distance displacement measuring unit T1 according to the present embodiment can detect the displacement in the horizontal direction between the main columns of the steel tower by measuring the change in the positional relationship between the moving body T11 and the distance measuring device T12. To do.

  When the undue displacement of the steel tower foundation occurs, the tension adjusting device 300 moves up and down (R1) so as to keep the tension on the wire 100 constant. Therefore, the wire 100 moves to the A point side or the C point side with respect to the distance displacement measuring unit T1. Thus, the distance displacement measuring unit T1 detects the displacement amount of the distance between the point A and the point B of the tower M (the amount of horizontal displacement between the main columns of the tower) based on the position where the wire 100 has moved. To do.

  Specifically, when the wire 100 moves to the A point side or the C point side, the moving body T <b> 11 ′ moves together with the wire 100. On the other hand, even if the wire 100 moves to the A point side or the C point side, the distance measuring device T12 'does not move because it is fixed at the B point of the main pillar M1. Therefore, the operator can measure the amount of movement of the wire 100 to the A point side or the C point side by comparing the mark T11a ′ of the moving body T11 ′ and the position of the scale of the distance measuring device T12 ′. .

  The displacement amount X measured by the distance displacement measuring unit T1 is a value including the displacement amount of the distance between the B point and the C point of the tower M in addition to the displacement amount of the distance between the B point and the A point of the tower M. is there. However, since the displacement amount of the distance between the B point and the C point is a displacement amount due to the distortion in the longitudinal direction of the main pillar M1, it is a small value compared to the displacement amount of the distance between the B point and the A point. Therefore, the displacement amount X measured by the distance displacement measuring unit T1 can be assumed to be the displacement amount of the distance between the B point and the A point, that is, the horizontal displacement amount between the main columns of the steel tower. However, in order to detect the displacement X in the horizontal direction between the main pillars of the tower with higher accuracy, the point B and the point A are set as close to the foundation of the tower M as possible, or the point C is as much as possible. It is desirable to set the position close to point B.

  FIG. 6 shows a method of detecting the amount of angular displacement at point B by the angular displacement measuring unit T2. In addition, the wire 100 and the indicator rod T21 indicated by the solid line represent the state before the undulating displacement of the steel tower foundation occurs, and the wire 100 ′ and the indicator bar T21 ′ indicated by the broken line are a state after the unequal displacement of the steel tower foundation has occurred. Represents.

As described above, the angular displacement measuring unit T2 according to the present embodiment measures the amount of angular displacement at the point B based on the positional relationship between the wire 100 (instruction bar T21) and the angle measuring device T22.
When the undue displacement of the steel tower foundation occurs, the positional relationship between the points A, B, and C changes, so the angle that the wire 100 forms at the point B changes. Here, since the indicator bar T21 is fixed to the connecting portion T14, the direction of the line segment connecting the point A and the point B is held as a reference direction. Therefore, the operator can measure the angular displacement amount θ by comparing the direction extending from the point B to the point C of the indicator bar T21 before and after the occurrence of the undue displacement of the tower foundation with the scale of the angle measuring device T22. it can.

  Next, non-uniform displacement of the steel tower foundation estimated from the horizontal displacement amount X measured as described above and the angular displacement amount θ will be described.

  When an undetermined displacement of the steel tower foundation occurs, the stress acting on each steel tower material is determined not by the absolute coordinates of one point but by the relative positional relationship with other main pillars or steel tower materials. In particular, the stress acting on the steel tower material can be estimated from the relative positional relationship with the steel tower foundation. Therefore, by detecting the displacement of the positional relationship between the horizontal point A and the point B with respect to the base C point of the tower with the measuring device according to the present embodiment, the stress acting on each tower material, and the repair time of the tower M Can be made appropriately.

  FIG. 7A and FIG. 7B show image diagrams of the undetermined displacement of the steel tower foundation estimated from the measured horizontal displacement amount X and angular displacement amount θ.

FIG. 7A is an image diagram showing the entire tower M before the undetermined displacement of the tower foundation occurs. FIG. 7B is an image diagram showing the entire tower M after the undisplaced displacement of the tower foundation estimated based on the horizontal displacement amount X and the angular displacement amount θ. In addition, FIG. 7B represents by the relative coordinate from the base part C point of the steel tower (The direction from C point and C point to B point is being fixed). However, the distance L between B point and A point, the distance T between B point and C point, and the angle θ _B between B points in FIG. 7A represent design values of the tower M. In addition, A ′ point, B ′ point, C ′ point, distance L ′ between B ′ point and A ′ point, distance T ′ between B ′ point and C ′ point, and angle θ _B ′ of B ′ point in FIG. , Respectively represents the position, distance and angle of the steel tower foundation after undue displacement.

  Here, the amount of horizontal displacement at the point A of the other main pillar M3 when the point B of the main pillar M1 of the steel tower is used as a reference, the other when the base C point of the main pillar M1 of the steel tower is used as a reference The amount of displacement in the vertical direction at point A of the main pillar M3 is generally expressed as follows.

Horizontal displacement of point A relative to point B = X
Vertical displacement of point A with respect to point C = L'sin θ
(However, L ′ = L + X, T≈T ′)
Further, since the same stress acts on the main columns M1 and M3 located at the diagonals of the four-legged steel tower M, the angle displacement amount at the point A of the main column M3 is the angle displacement amount θ of the B point. It can be estimated that it is substantially the same. That is, the horizontal displacement between the base portion of the main column M1 and the base portion of the main column M3 can be estimated based on the horizontal displacement amount X of the A point with respect to the B point, and the vertical displacement amount of the A point with respect to the C point. The vertical displacement between the base portion of the main column M1 and the base portion of the main column M3 can be estimated based on the above. From this, the whole shape of the steel tower M after the non-uniform displacement of the steel tower foundation can be estimated as shown in FIG. 7B.

  At this time, as shown in FIG. 7B, the entire shape of the tower M after the undue displacement of the tower foundation is simulated, the stress applied to each tower material is calculated, and the repair timing of the tower M is judged. However, based on the standard of the steel tower M, the amount of expansion and contraction of the steel tower material and the bending are determined by the horizontal displacement amount X between the main pillars of the steel tower and the vertical displacement amount (the displacement amount θ of the angle at the point B). It is possible to estimate the amount, and thereby it is possible to determine the breaking time and the buckling time.

  For example, according to the JEC standard (Electrical Society of Japan Electrical Standards Research Committee Standard: Power Transmission Support Design Standard JEC-127), the horizontal displacement between steel tower foundations is 1/1200 of the interval between steel tower foundations. Or when the amount of vertical displacement between the foundations of the tower exceeds 1/800 of the interval between the foundations of the tower. Since this method is a well-known method, detailed description is omitted.

  That is, the measuring apparatus according to the present embodiment makes it possible to detect the horizontal displacement amount X between the main pillars of the tower and the angle displacement θ of the angle at the point B of the tower. It is possible to properly grasp the situation and determine the timing of repair of the steel tower.

  As described above, according to the measuring apparatus according to the present embodiment, the operator can monitor the change in the positional relationship between the main pillars of the steel tower based on the indefinite displacement of the steel tower foundation, in particular, the horizontal displacement between the main pillars of the steel tower. Since it becomes easy to monitor the amount of displacement in the vertical direction (the amount of angular displacement), the working efficiency is improved.

  In addition, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. The present invention can be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

  In the said embodiment, A point, B point, and C point are respectively the predetermined position of the main pillar M3 of the steel tower M, the position of the main pillar M1 whose height from the ground is substantially the same as the A point, and the main pillar M1. The horizontal displacement between the foundation part of the main pillar M1 and the foundation part of the main pillar M3 and the vertical displacement between the foundation part of the main pillar M1 and the foundation part of the main pillar M3 are estimated. An embodiment was shown. However, the setting positions of the A point, the B point, and the C point are not necessarily the above positions. Specifically, if the B point and the C point are set as one main pillar and the A point is set as another main pillar different from the main pillar, the displacement of the position of the A point with respect to the C point, that is, The displacement of the positional relationship of the other main column with respect to the one main column can be measured. Therefore, if the stress distribution on the steel tower material based on the displacement of the position of the A point with respect to the C point is calculated in advance, it is possible to determine the repair timing of the steel tower as in the above embodiment.

  In the above embodiment, the angular displacement measuring unit T2 instructs the direction of the line segment connecting the point A and the point B to be the reference direction in order to detect the amount of angular displacement of the point B due to the undetermined displacement of the tower foundation. The rod T21 is fixed to the connecting portion T14 of the distance displacement measuring unit T1, and the displacement in the direction from the point A to the point B is measured with respect to the reference direction. However, the angular displacement measuring unit T2 only needs to be able to directly or indirectly measure the angular displacement of the wire 100 at the point B, and the measurement target is another member that is displaced in conjunction with the displacement in the direction of the wire 100. There may be.

DESCRIPTION OF SYMBOLS 100 Wire 200 1st attaching part 300 Tension adjusting device 400 2nd attaching part T1 Distance displacement measuring part T2 Angular displacement measuring part M Steel tower M1-M4 Main pillar

Claims (4)

From the change in the positional relationship of the first point of the first main pillar, the second point of the second main pillar, and the third point in the direction of the foundation of the second main pillar with respect to the second point, the steel tower foundation A measuring device for detecting the non-uniform displacement of
A wire having one end attached to the first point and the other end attached to the third point via the second point;
A wire hook attached to the second point and hooking the wire to the second point;
A tension adjusting device that operates to pull the wire at a predetermined tension;
In order to detect the displacement amount of the distance between the first point and the second point of the tower based on the non-uniform displacement of the tower foundation, the wire hanging fastener is attached to the first point and the third point. A distance displacement measuring unit that measures a displacement amount of the position of the wire between the point and
A displacement amount of an angle formed by a line segment connecting the first point and the second point of the tower and a line segment connecting the second point and the third point based on the undetermined displacement of the tower base. An angular displacement measuring unit that is attached to the wire hook and detects the amount of angular displacement of the wire at the second point to detect,
A measuring apparatus comprising: The first point and the second point are positions at which the height from the ground in the first main column and the second main column is substantially the same, respectively.
The measuring device according to claim 1, wherein the third point is a position of a base portion in the second main pillar. The said tension adjustment apparatus adjusts so that the tension | tensile_strength which pulls the said wire may become fixed when the displacement of the said steel tower foundation arises and the position of the said wire changes. The measuring device described. The tension adjusting device detects tension that pulls the wire, and adjusts the tension that pulls the wire to be constant based on a detection result of tension that pulls the wire. Measuring device.

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