JPS60104279A - Position measuring data processing method of buried object in structure - Google Patents

Abstract

PURPOSE:To process and graph exactly, quickly and easily a measuring data of a position of a buried object by sticking a mark line to the surface of a structure, sensing a radiation transmitting intensity by the rear side, bringing a sensing signal to a computer processing, and controlling a plotter. CONSTITUTION:X-rays are irradiated from an X-ray radiation source installed at a known distance on a line vertical to the surface from the center point of a mark 3 of a wire rod of lead, tungsten, etc. struck to the surface of a structure, and a radiation transmitting intensity is sensed by an X-ray film 4 provided on the rear side of the structure. By observing this film 4, a transmitting image center line 6 of a buried object, a production 7 of a mark image, a diameter line 8 of the buried object, etc. are marked off, points A1-A3 on the line 6, points B1, B2 on the line 8, points ''0'' and L1-L4 on the line 7, and mark point images P1,P2 are set, and they are read by a digitizer. When this read result is brought to an operation processing through a computer, a position of the buried object is determined by a numerical value by including a depth and a position, and a position of the buried object is graphed exactly, quickly and easily by a plotter.

Description

[Detailed Description of the Invention] The present invention is a method of irradiating radiation to a structure made of concrete, wood, etc. when various types of pipes, reinforcing steel ducts, and other buried objects are buried in the structure, such as floors, walls, and ceilings. death,
The present invention relates to a method of converting a projection view generated by transmitted radiation into data and calculating the detected data to map the burial position.

Conventionally, in conjunction with security inspections of the seismic strength of existing concrete buildings and building remodeling, it has been an important element in construction to know in advance the locations of reinforcing bars and piping buried in concrete walls, columns, etc.

Whether it's piping or reinforcing steel, it should be 77IH based on the drawings, but in reality there are often discrepancies with the positions shown on the construction drawings. In the case of opening work, it may be necessary to change the opening position without consideration, or the wall may have to be destroyed on a large scale to dig out buried objects.
Furthermore, it is often inefficient and uneconomical, as it requires a great deal of effort to repair the hole.

Therefore, electromagnetic methods and the like have been devised as a so-called non-destructive method of detecting the position of buried objects buried in concrete walls of buildings and inside companies.

This electromagnetic measuring method measures the position of buried objects by moving a measuring device containing a magnet against the surface of the structure and sensing the reaction to the buried objects. The measurement method shown in formula J: not only requires a high degree of skill to judge the measured value when buried objects are buried in a complex manner within a structure, but also cannot judge the depth of the buried objects. There were problems such as large measurement errors.

The present invention solves the above-mentioned drawbacks and allows measurement data of the position of buried objects to be processed and mapped accurately, quickly and easily into structures. l! ii An object of the present invention is to provide a method for processing position measurement data of an R object.

In other words, the present invention attaches a marker with known dimensions on the surface of the IM structure in which the buried object is buried. From there, radiation is used in black, the transmitted intensity of the radiation is sensed on the back side of the structure, the sensed data is interpreted in coordinates, the interpreted data is processed by a computer, and then plotted on a plotter linked to the computer. The present invention relates to a method for processing position measurement data of buried objects in a structure.

Next, one embodiment of the present invention will be explained based on the drawings.

[A] Radiation Transmission In FIG. 1, a structure 1 is made of concrete 1 to walls, etc., and buried objects 2 such as reinforcing bars are buried therein.

In addition, 3 is a marker line 3 made of lead or tungsten, etc.
and horizontal to the surface of structure 1 (=J).

Furthermore, 4 is a radiation film 4 attached to the back surface of the structure 1, that is, the back surface of the surface to which the marker line 3 is pasted.

5 is the radiation irradiation source 5, and its position is marked 1X
A point at an arbitrary distance on a line extending perpendicularly to structure 1 from the point that divides Q3 into three equal parts.

A radiation source 5 irradiates the structure 1 with radiation such as X-rays and γ-rays.

[Opening] Film markings (Figure 3) Radiation transmission,
Using an f-lume observation device, the center line 6 of the transmitted image of the buried object 2 is
To measure the diameter of the buried object 2, mark the extension line 7 of the marking image.

Then, in order to be read by a known digitizer, as shown in FIG. Mark a total of 12 points on line 7H from O, Ll to 4, gauge point images P1 and P2.

[Coordinate interpretation using a box digitizer Film 4 with 12 points marked on a known digitizer
1~ and read the coordinates of each point.

[2] "Known to the computer?" -Data input Input the following three known data into the computer.

(1) FWD: Distance from the irradiation source to the wall (2) L: Length of the marker line 3) D: Outer diameter of the buried object It is then processed by the computer.

The calculation processing method will be explained below.

The coordinates of each point shown in Figure 3.4 are written as follows.

A 1 (c, e) A 2 (r, b) A 3 (, (
1111) B 1 (s, shi) B 2 (u,
v) L 1 (a, A 1) L 2 (a, A 2) L
3(13, II)l-4(J24,]))1)1(j
, k) P 2 (cl, rl O (a, b) Therefore, the distance 1 from the center line of the marker to the center of the buried object on the film 4
! [:y, outer diameter of buried object: dl and length of marker image 2λ
is y = a - e d = p - 17 T ryo [薯] / β - J24 - J2 3, wall thickness: t, distance from the surface of the structure to the center of the buried object m: x, the center of the sign The distance from to the center of the buried object: Y is given by the following formula.

Further, as shown in FIG. 1, the actual buried position is indicated by a chain line 1, and the coordinates of AI-J5 and A3- on this line are as follows.

AI-(C+710) A 3' (U + z, l +) Here, 7 is from Figure N Z’-a-Y is the value given by .

[J to 1 plotter] As a result of the above, the points A necessary to plot the position of the buried object as seen from the surface of the structure (wooden) in the known plotter A 1-
1A3', the coordinates of L1 to L3 have been found. (
Figure 5) A I= (c +7, O) However, Z=a-YA3'(g
7.11) 1-1 (a, β 1) 1-2 (a, j22) 1-3 (λ 3, b L 4 (β 4, b) Next, plot the buried position as seen from the film 4 side. In order to draw Pl, P2, A1', A3', L1
The coordinates must be converted by 18'0 degrees with ~L2 as the axis. (Figure 6) Each point after coordinate transformation is 1) 1', P 2-1
Assuming A1' and A3', the coordinates after conversion are as follows.

P 1(,i, k) → P 1- (2a-
j,k)P2(Q,r)-)P2-(2
a-q, r)A1'(C-tZ, e)-
) A 1” (2a - c - Z, c ) A 2' ((1
-)Z, l+) -+A 3'(2a -a -Z,
h) [F] Completion of drawing Select either the view from the front side or the back side of the structure on the plotter and actually plot it.

If the drawing output from the plotter is supported from the front side, align it with the sign - C1, or if it is instructed from the back side, align it with the gauge mark (2 points) and attach it to the structure, or transfer it. -Lee.

Based on this transferred drawing, the buried position of the buried object is accurately determined and, for example, the next drilling operation is performed.

Since the present invention is as explained above, the following effects can be expected.

(B) The data obtained by measuring the burial position using radiation is processed by a computer and sent to a block linked to the computer (11), which instantly maps out the exact burial position.

Even if the buried object is buried in a complicated manner, the position of the buried object can be measured with high precision because the radiation passes through it.

<C> Since the location of buried objects can be mapped to the correct 411", work efficiency such as 1tfl 7l work to avoid the safety pedestal of an earthquake-resistant structure or J!l! equipment can be improved. You can avoid improvement.

[Brief explanation of drawings]

Fig. 1m: An explanatory diagram of an embodiment of the present invention Fig. 2: An explanatory diagram of a measurement method Figs. 3 and 4: An explanatory diagram of an image drawn on a film by transmitted radiation Fig. 5: Front side of a structure Figure 6: Explanatory diagram illustrating the position of buried objects when viewed from the back side 1: Structure 2: Buried object 3: Sign line 4 : Film 5: Radiation irradiation source (ray source) 6: Center line of transmitted image of buried object Applicant: Tokyu Construction Co., Ltd. Proceedings in 4e2 111 Official document March 27, 1980 Commissioner of the Japan Patent Office Young Kazuo Sugi 1, Patent Application No. 1982-212132 2, Name of the Invention m Electric J3 Position Measurement Data Processing Method for Buried Objects 3;
Relationship with the case of the person making the amendment Patent-1 Applicant Address 1-16-14 Shibuya, Shibuya-ku, Tokyo Name Name
Tokyu Construction Co., Ltd. (and 2 others) Representative: Otete Yagi 4, Agent: 105 Address: 9, Marusane Hill, 3-1-10 Shinbashi, Minato-ku, Tokyo
``5. Date of amendment order (shipment date) 2nd F] 28th, 1980 The characters in the specification are corrected as follows. On page 2, line 11, ``Motosute'' has been changed to ``Based on (1 te”,
Page 2, line 15, “Reserve” to “extra (6”), page 5, line 11, “O3[1~L4J above] [0° above and 3.L4J,” page 6, line 8 [ 1 can be corrected to [take (not shown)], and page 7, line 6, Figure F can be corrected to ``Figure 4''.

Claims (1)

[Claims] A mark with known dimensions is attached to the surface of the structure in which the buried object is buried, and radiation is emitted from a radiation source at a fixed position on the axis -L perpendicular to the wall of the 48 structure at the center of the mark line. irradiate the structure, sense the transmitted intensity of the radiation on the back side of the structure, interpret the sensed data in coordinates, process the interpreted data on a computer, and then plot it on a plotter linked to the computer. 8. lj method for processing position measurement data of buried objects in structures.