KR101818486B1 - Three dimensions displacement measuring instrument in flexible behavior part for safety test of construction - Google Patents

Abstract

The present invention relates to a three-dimensional displacement measuring instrument of a flexural behavior portion for safety diagnosis of a civil engineering structure which identifies generation of three-dimensional displacement in the flexural behavior portion of the civil engineering structure and an expansion amount and performs measurement of an expansion amount periodically for a relatively long time, wherein a measurement length is adjusted appropriately corresponding to the size of the measured behavior portion, and is easily detachable and attachable. According to a proper embodiment of the present invention, the three-dimensional displacement measuring instrument of a flexural behavior portion for safety diagnosis of a civil engineering structure comprises: a pair of expansion sticks respectively attached and installed on a displacement measurement object; a roller tube made of a transparent material, installed any one of the pair of expansion sticks, and having orthogonal measurement gradations mutually perpendicularly orthogonal to a closed side surface of one end, an opening formed on the other end, and horizontal measurement gradations formed in a longitudinal direction on a surface; and a reference stick installed on the other side among any one of the pair of expansion sticks, inserted through the opening of the roller tube, and having orthogonal reference gradations orthogonal to an end and horizontal reference gradations formed in a longitudinal direction.

Description

TECHNICAL FIELD [0001] The present invention relates to a three-dimensional displacement measuring instrument for a safety inspection of a civil engineering structure,

The present invention relates to a displacement measuring instrument for safety diagnosis of civil engineering structures, in particular, to confirm the existence and the amount of expansion of a three-dimensional displacement occurring at the expansion and contraction portion of a civil engineering structure, and to measure it over a long period of time, And more particularly, to a three-dimensional displacement measuring instrument for a stretching and shaking motion region for safety diagnosis of a civil engineering structure in which the measurement length can be adjusted appropriately and the installation and detachment of the installation can be done easily.

Generally, in the existing civil structure, since the tape measure is used for the expansion and contraction measurement, not only one-way measurement desired by the user is possible but also it is difficult to collect consistent measurement data and regularly collect measurement data. For example, the upper structure of a bridge is located on a pier or an alternation, and the expansion and contraction behavior occurs due to temperature change, packing expansion, earth pressure, and abnormal behavior. In this case, the upper structure is displaced not only in the longitudinal direction (throttling direction) but also in the width direction (orthogonal axis perpendicular direction) and the height direction. Therefore, it is not possible to perform simultaneous measurement with the strain measurement because it generates three-dimensional displacement at the elastic expansion and contraction part of the structure, and it is inconvenient to measure it regularly and in the long term.

As a background of the present invention, a 'displacement meter' is proposed as a registered patent registration No. 10-0765355. In order to measure the displacement of the PC (Prestress Concrete) beam used for civil engineering structures and bridges, the buckling of the PC beam causes the displacement meter So that the displacement of the PC beam can be precisely measured.

However, since the background art can only measure the amount of buckling displacement occurring in one direction of the PC beam, it is difficult to apply it to the expansion and contraction part where the expansion and contraction of the civil engineering structure is performed. In addition, There is a drawback that it can not be performed.

As another technology to be a background of the present invention, a '3-axis displacement measuring device' is proposed as a registered patent registration No. 10-1191797. This makes it possible to reduce the size, minimize the limitation of the installation position, and enhance the accuracy of the rotation angle by using a plurality of encoders. However, this background technology has a disadvantage in that it is difficult to apply the manufacturing method in a short interval of expansion and contraction due to an increase in manufacturing cost due to a large number of mechanical assembly parts.

Patent Registration No. 10-0765355 Patent Registration No. 10-1191797

The present invention is capable of checking the presence or absence of three-dimensional displacements and the amount of expansion and contraction at the elongation and contraction of the civil structure, and measuring the length of the measurement at a suitable length, The present invention provides a three-dimensional displacement measuring instrument for a telescoping movable part for safety diagnosis of a civil engineering structure which is detachable.

According to another aspect of the present invention, there is provided a three-dimensional displacement measuring instrument for a safety device for a civil engineering structure, the apparatus comprising: a pair of expansion sticks mounted on a displacement measuring object; A pair of expansion sticks having orthogonal measurement graduations orthogonally perpendicular to one another on a closed side of one end and having openings at the other end and made of a transparent material having a horizontal measurement scale in the longitudinal direction on the surface thereof and fixed to either one of the pair of expansion sticks A ruler tube; And a reference bar fixed to the other of the pair of expansion sticks and inserted through the opening of the ruler tube and having an orthogonal reference scale orthogonal to the distal end and a horizontal reference scale in the longitudinal direction.

In addition, the pair of expansion sticks are characterized in that two or more unit sticks are mutually forcibly fitted and stretched in multiple stages, and a steel block for stick is provided at one end and a magnetic block is provided at the other end.

In addition, the lower surface of the ruler tube is further provided with a steel plate which is attracted to the magnetic block by a magnetic force.

The apparatus further includes an expansion stick fixing magnetic block for attracting the steel block by a magnetic force so as to adhere the pair of expansion sticks to the object to be measured.

Further, the ruler tube is further provided with circular graduations arranged on the side surfaces of the ruler tube with the same center and a uniform spacing.

Further, the ruler tube is further provided with a vertical measurement scale in a vertical direction orthogonal to the arrangement direction of the horizontal measurement scale.

A three-dimensional displacement measuring instrument for the safety diagnosis of a civil engineering structure according to the present invention is characterized in that a pair of expansion sticks which can be adjusted in length according to the size of measuring oil is attached to a stretching and shaking portion of a civil engineering structure, A ruler tube with three dimensional measurement scale on the expansion stick and a reference rod leading into the ruler tube can be installed to confirm the presence of the three dimensional displacement and the amount of expansion and contraction on the expansion and contraction site, In addition, consistent measurement data can be obtained. As a result, the three-dimensional behavior of civil engineering structures can be confirmed over a long period of time.

In addition, it is possible to adjust the measurement length appropriately corresponding to the size of the measured oil, and to facilitate the installation and detachment of the installation, thereby enhancing the installation convenience of the user and simplifying the configuration, thereby reducing the measurement cost.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
FIG. 1 is a view showing installation and use state of a three-dimensional displacement measuring instrument in a stretching and shaking motion region for safety diagnosis of a civil engineering structure according to the present invention. FIG.
2 is a partially enlarged perspective view of Fig.
FIGS. 3A and 3B are a stretched state and a contracted state of the expansion stick applied to FIG. 1;
Figure 4a is a perspective view of a ruler tube applied to Figure 1;
Figure 4b is a side view of Figure 4a.
Figure 5 is a perspective view of the reference bar applied in Figure 1;
FIG. 6 is a perspective view of a magnetic block for fixing an expansion stick applied to FIG. 1; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

The three-dimensional displacement measuring instrument according to the present invention includes a pair of expansion sticks 10 and 10a attached to displacement measurement objects M1 and M2 as shown in FIGS. 1 to 5, respectively. The displacement measurement objects M1 and M2 may include bridges, tunnels, hydrological gates, and the like, which have a disturbance (or a moving part) that is expanded and contracted as a civil engineering structure. The pair of expansion sticks 10 and 10a have the same configuration.

Accordingly, as shown in FIGS. 3A and 3B, when two or more unit sticks 101 are forcedly engaged with each other, they can be expanded and contracted in multiple stages. It is preferable that the unit sticks 101 have a rectangular cylindrical cross-section so that rotation between the unit sticks 101 is prevented. As such, the expansion stick 10 has a merit that two or more unit sticks 101 are forcedly engaged with each other, and that the length of the expansion stick 10 can be adjusted in accordance with the size of the disturbance of the expansion and contraction movement portion. Of course, each of the pair of expansion sticks 10 and 10a may be constituted by only one unit stick 101.

The expansion sticks 10 and 10a are provided with iron at one end to facilitate disassembly convenience for the displacement measurement objects M1 and M2 and detachable attachment of the ruler tube 12 and the reference rod 14, And a magnetic block 103 having magnetism at the other end may be provided.

A magnetic block 11 for fixing an expansion stick having magnetic properties may be provided to attach a pair of expansion sticks 10 and 10a to displacement measurement objects M1 and M2. For example, the magnetic block 11 for fixing the expansion stick may be made of a magnetic material. The magnetic block for fixing the expansion stick 11 may be attracted to the displacement measurement objects M1 and M2 by magnetic force or may be attached thereto through a known adhesive. Further, the magnetic block for fixing the expansion stick 11 may be attached to the steel plate by magnetic force after the unillustrated steel plate is mounted on the displacement measurement objects M1 and M2. Therefore, the magnetic block 11 for fixing the expansion stick can be magnetically attached to the displacement measurement objects M1 and M2 (for example, steel box girders) as shown in Fig. That is, the stick steel block 102 is magnetically attached to the magnetic block 11 for fixing the expansion sticks attached to the displacement measurement objects M1 and M2 so that the pair of expansion sticks 10 and 10a are placed on the displacement measurement object M1, and M2, respectively.

A ruler tube (12) is provided which is fixed to either one of the pair of expansion sticks (10, 10a). In this embodiment, the ruler tube 12 is installed to be supported by the expansion stick 10 on one side, but may be installed on the other side of the expansion stick 10a. The ruler tube 12 may be made of transparent plastic, glass, or the like, for example, as a transparent material so that the scale displacement with respect to the reference rod 14 to be described later can be observed. A tempered glass that is not fragile when the ruler tube 12 is made of glass is preferred.

At this time, the ruler tube 12 is configured as an elongated cylinder having an open end 12b having one side closed at its side end 12a. The ruler tube 12 has orthogonal measurement graduations 121 and 122 perpendicular to each other on the side surface 12a and a horizontal measurement graduation 125 on the surface in the longitudinal direction (direction perpendicular to the side surface 12a). Therefore, the roller tube 12 measures the displacements in the Z and Y directions as shown in FIG. 2 by the movement change of the scale position relative to the orthogonal reference scales 141 and 142 and the orthogonal measurement scales 121 and 122 to be described later on the reference rod 14 side can do.

On the other hand, the side surface 12a of the ruler tube 12 may further include a circular graduation 123 arranged at an equal distance from the center. The circular graduations 123 can more easily identify the orthogonal measurement graduations 121 and 122 by passing the orthogonal measurement graduations 121 and 122 at the same time and at a larger interval than the orthogonal measurement graduations 121 and 122. [

The ruler tube 12 may further include a vertical measurement scale 126 in the vertical direction perpendicular to the arrangement direction of the horizontal measurement scale 125. The vertical measurement graduation 126 forms a measurement origin O intersecting with the horizontal measurement graduation 125 in a mutually intersecting manner so as to conform to one of the horizontal reference graduations 145 of the reference bar 14 . The vertical measurement scale 126 may additionally measure the amount of displacement of the reference bar 14 in the Z axis.

Further, a steel plate 13, which is attracted to the magnetic block 103 by a magnetic force, may further be installed on the lower surface of the ruler tube 12. [ Accordingly, the ruler tube 12 can be attracted to the magnetic block 103 by the magnetic force via the steel plate 13 and detachably attached to the expansion stick 10.

A reference rod 14 is fixedly mounted on the other of the pair of expansion sticks 10, 10a. The reference rod 14 has a cross section that is relatively smaller than the cross section of the ruler tube 12. [ The reference rod 14 is thus inserted into the interior of the ruler tube 12 through the opening 12b of the ruler tube 12. [ The reference bar 14 has orthogonal reference scales 141 and 142 orthogonal to the distal end and a horizontal reference scale 145 in the longitudinal direction. In this case, the orthogonal reference scales 141 and 142 are spaced apart from the orthogonal measurement scales 121 and 122 so that the measurement displacement amount can be easily grasped. The horizontal reference scale 145 has an interval larger than the horizontal measurement scale 125. The reference bar 14 is not limited to a specific material such as synthetic resin or metal. At this time, the reference bar 14 may be provided with a reference bar steel block 147 at one end to be adsorbed to the magnetic block 103 of the other expansion stick 10a. In this embodiment, the reference bar 14 may have a rectangular cross section or a circular cross section.

The displacement measurement method and the operation using the three-dimensional displacement meter of the thus configured elongation and contraction displacement region will be described.

First, as shown in FIGS. 1 and 2, a pair of expansion sticks 10 and 10a are displaced so that the ruler tube 12 and the reference rod 14 can be positioned between the expansion and contraction distances of the displacement measurement objects M1 and M2. And is attached to the objects M1 and M2. At this time, the magnetic block for fixing the expansion stick 11 is magnetically attached to the metal part of the displacement measurement objects M1 and M2 (for example, steel box girder) and the pair of expansion sticks 10 and 10a is fixed to the expansion stick And is supported by the displacement measurement objects M1 and M2 by being adsorbed to the magnetic block for stick 11 via the stick block for a stick 102. [

Then, the ruler tube 12 is installed on the expansion stick 10 on one side. At this time, the ruler tube 12 is installed on one side of the expansion stick 10 so that the steel plate 13 is attracted to the magnetic block 103 by magnetic force.

Thereafter, the reference rod 14 is drawn into the inside of the ruler tube 12 through the opening 12b and attached to the other side of the expansion stick 10a. At this time, the reference bar 14 can be simply attached to the other side of the expansion stick 10a by sucking the reference block steel bar 147 for one end of the reference bar 14 to the magnetic block 103. In this state, the origin O at which the horizontal measurement scale 125 and the vertical measurement scale 126 of the reference bar 14 intersect is made to coincide with a scale of the horizontal reference scale 145, The preparation for measuring the three-dimensional displacement generated in the displacement measurement objects M1 and M2 is completed.

Thereafter, a relative displacement occurs between the horizontal measurement scale 125 and the horizontal measurement scale 145 when expansion and contraction occur in the horizontal direction X (longitudinal direction or throttling direction in the case of the bridge) to the displacement measurement objects M1 and M2 So that the amount of expansion and contraction in the horizontal direction X can be measured.

When the expansion and contraction is generated in the vertical direction Z (the height direction in the case of the bridge) to the displacement measurement objects M1 and M2, the vertical orthogonal reference scale 141 of the reference bar 14 relatively moves, As a result, a displacement occurs at a relative position between the perpendicular orthogonal measurement scale 122 and the orthogonal reference scale 141, and the amount of displacement in the vertical direction Z can be measured.

When elongation and contraction are generated in the displacement measurement objects M1 and M2 in the Y direction perpendicular to the horizontal direction X (in the direction perpendicular to the throttle axis in the case of a bridge), the vertical orthogonal reference scale 142 of the reference bar 14 The position is relatively moved on the orthogonal measuring scale 121 and displacement occurs, so that the amount of displacement in the Y direction can be measured.

The three-dimensional displacement measuring instrument according to the present invention has a pair of expansion sticks 10 and 10a, which are three-dimensional displacements in the X, Y and Z directions, which are generated in the elastic expansion and contraction portions of the displacement measurement objects M1 and M2, It is possible to obtain consistent measurement data through the relative displacement amount between the ruler tube 12 and the reference rod 14 installed on the support rod 14 and thereby the three dimensional expansion and contraction behavior of the civil engineering structure can be confirmed over a long period of time.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

10,10a: Expansion stick
101: Unit Stick
102: Steel block for stick
103: Magnetic block
12: Ruler tube
121,122: Orthogonal measurement scale
123: Circular scale
126: Vertical measurement scale
13: Steel plate
14: Reference bar
141,142: Orthogonal reference scale
147: Steel block for reference bar

Claims (6)

A pair of expansion sticks 10 and 10a attached to the displacement measurement objects M1 and M2, respectively;
(12b) having orthogonal measurement graduations (121, 122) orthogonally perpendicular to one another on a closed side face (12a) at one end and open at the other end and having horizontal measurement graduations (125) A ruler tube (12) fixed to one of the pair of expansion sticks (10, 10a);
Orthogonal reference graduations 141 and 142 that are fixed to the other of the pair of expansion sticks 10 and 10a and inserted through the opening 12b of the ruler tube 12 and orthogonal to the distal end, And a reference rod (14) having a reference axis (145). The three-dimensional displacement measuring instrument for expanding and contracting a movable part for safety diagnosis of a civil engineering structure. The method according to claim 1,
The pair of expansion sticks 10 and 10a are constructed such that two or more unit sticks 101 are mutually forcibly engaged and expanded in a multi-stage manner, and a steel block 102 is provided at one end and a magnetic block 103 is provided at the other end. Wherein the three-dimensional displacement measuring instrument is a three-dimensional displacement measuring device for the safety diagnosis of a civil engineering structure. 3. The method of claim 2,
And a steel plate (13) attracted to the magnetic block (103) by magnetic force is further provided on the lower surface of the ruler tube (12). 3. The method of claim 2,
And further includes an expansion stick fixing magnetic block 11 for attracting the steel stick block 102 by a magnetic force so as to attach the pair of expansion sticks 10 and 10a to the displacement measurement objects M1 and M2 Dimensional displacement measuring instrument for safety diagnosis of civil engineering structures. The method according to claim 1,
Wherein the side surface (12a) of the ruler tube (12) is further provided with a circular scale (123) arranged at the same center and an even spacing on the side surface (12a) of the ruler tube (12). The method according to claim 1,
Characterized in that the ruler tube (12) further comprises a vertical measurement scale (126) perpendicular to the direction of the horizontal measurement scale (125). Instruments.

Images