KR101762719B1 - Method for measuring weight of structure - Google Patents

Method for measuring weight of structure Download PDF

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Publication number
KR101762719B1
KR101762719B1 KR1020150114492A KR20150114492A KR101762719B1 KR 101762719 B1 KR101762719 B1 KR 101762719B1 KR 1020150114492 A KR1020150114492 A KR 1020150114492A KR 20150114492 A KR20150114492 A KR 20150114492A KR 101762719 B1 KR101762719 B1 KR 101762719B1
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KR
South Korea
Prior art keywords
weight
columns
column
wire
measuring
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KR1020150114492A
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Korean (ko)
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KR20170019946A (en
Inventor
김지운
박은미
박찬현
한성욱
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삼성중공업 주식회사
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Priority to KR1020150114492A priority Critical patent/KR101762719B1/en
Publication of KR20170019946A publication Critical patent/KR20170019946A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G17/00—Apparatus for or methods of weighing material of special form or property
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/10—Quick-acting fastenings; Clamps holding in one direction only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G9/00—Methods of, or apparatus for, the determination of weight, not provided for in groups G01G1/00 - G01G7/00

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

A method for measuring the weight of a structure is provided. A method for measuring a weight of a structure includes separating a bottom surface of a plurality of columns provided on a structure with a slope with respect to the surface of the structure from a foundation on which the plurality of columns are seated, A shim plate is inserted between the plurality of columns and the base, the plurality of columns are connected to each other using a sling wire after inserting the shim plate, And measuring the weight of the structure and disconnecting the wire after measuring the weight of the structure.

Description

[0001] The present invention relates to a method for measuring a weight of a structure,

The present invention relates to a method for measuring the weight of a structure.

In the case of offshore structure, due to the importance of the effect of the weight, it is necessary to compare the design weight and the actual weight of each structure in all constructions.

Korean Patent Publication No. 10-2015-0010869 (2015.01.29)

On the other hand, in the case of a structure equipped with a column, a support for weight measurement is disposed on the lower part of the column, and a weight measuring device is installed on the lower part of the support to measure the weight of the structure. In the case of the topside structure, four columns are provided, and the weight of the structure is measured by installing a gravimetric instrument on the bottom of the four columns. Particularly, when the column provided in the structure has an inclination rather than a perpendicular to the ground, the overall shape of the structure may be changed in measuring the weight of the structure.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for measuring a weight of a structure having a column having a slope with respect to the ground.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, an aspect of a method for measuring the weight of a structure according to the present invention is a method for measuring the weight of a structure, comprising the steps of providing a bottom surface of a plurality of columns provided on a structure with a slope with respect to the ground, a plurality of columns are connected to each other by a plurality of columns, a plurality of columns are connected to each other by a plurality of columns, The weight of the sample.

And setting a position guide on the base to specify the positions of the plurality of columns.

Further comprising adjusting the tension of the wire between connecting the plurality of columns and measuring the weight of the structure.

Adjusting the tension of the wire includes adjusting the tension using a push-pull device.

Measuring the weight of the structure includes installing a weight support on the plurality of columns and lifting the weight support by a gravimeter to measure the weight of the structure.

And inserting the shim plate between the weighing instrument and the bottom surface of the plurality of columns.

Further comprising disposing a departure prevention portion for preventing the rightward departure of the plurality of columns from the base, and disconnecting the wires.

The details of other embodiments are included in the detailed description and drawings.

Figures 1 and 2 are views showing a structure provided with a column inclined with respect to the paper surface.
3 is a flow chart illustrating a method of weighing a structure in accordance with some embodiments of the present invention.
4 is a view for explaining the step S311 of FIG.
5 is a cross-sectional view illustrating a base according to an embodiment of the present invention.
6 is a view for explaining the step S312 of FIG.
7 is a view for explaining the step S321 of FIG.
FIG. 8 is a view for explaining the step S322 of FIG. 3. FIG.
FIG. 9 is a view for explaining the step S323 of FIG. 3. FIG.
10 is a view showing that the column departs from the correct position as it is spaced from the bottom surface.
11 is a view for explaining the step S324 of FIG.
12 and 13 are views for explaining the step S326 in FIG.
FIGS. 14 and 15 are views for explaining the step S327 of FIG. 3. FIG.
16 is a diagram for explaining the step S329 of FIG.
FIG. 17 is a view for explaining the step S330 of FIG. 3. FIG.
18 is a diagram for explaining the step S331 of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

Figures 1 and 2 are views showing a structure provided with a column inclined with respect to the paper surface.

In the production of offshore structures, it is necessary to make efforts to maintain the weight during design while measuring the weight of offshore structures from time to time. If the actual weight exceeds the weight predicted at the design stage, not only a safety problem will occur but also transportation, installation and maintenance may become difficult.

In the case of a structure with a column, a weighing machine is installed on the column to measure the weight of the structure. For example, if there are four columns, four weighers can be placed in each column and used for weighing.

On the other hand, when the column provided in the structure is not perpendicular to the ground but has an inclination, the connection relation between the structure body and the column may be weakened in measuring the weight of the structure.

1 and 2 illustrate an offshore structure 100 to be weighed by a method according to an embodiment of the present invention and illustrate an offshore structure 100 comprised of a structure body 110 and a column 120 have.

Various types of marine equipment (not shown) may be installed in the structure body 110, or may be composed of a plurality of layers.

The column 120 serves to support the structure body 110. Meanwhile, in the present invention, the column 120 can support the structure body 110 with a slope with respect to the ground. As shown in FIG. 2, the column 120 may have a certain angle (? 1,? 2) that is not perpendicular to the paper surface. The angles of the respective columns 120 with the ground may be the same, some may be different, or all may be different.

1 and 2 show an offshore structure 100 composed of three columns 120, but the structure to be measured by the present invention is not limited thereto.

The column 120 includes a body supporting part 121 for supporting the structure body 110 and a seating part 122 provided at the lower end of the body supporting part 121 and resting on the ground. It is preferable that the cross section of the seating part 122 is formed larger than the body supporting part 121, but the present invention is not limited thereto. 1 and 2 illustrate a column 120 having a circular section, but columns may be provided in the structure having a polygonal cross-section such as a triangle or a rectangle. In addition, the size of the cross section along the long axis direction of the column may be varied.

In this way, when the column 120 supporting the structure body 110 has an inclination with respect to the ground, the overall shape of the structure 100 can be changed in measuring the weight of the structure 100. [

The weight of the structure 100 is transferred to the column 120 to generate a frictional force between the column 120 and the ground so that the column 120 can maintain a constant posture . However, when the structure 100 is lifted vertically from the ground to measure the weight of the structure 100, the column 120 is spaced from the ground and the frictional force between the ground and the column 120 is lost. Thus, the arrangement angle of the column 120 connected to the structure body 110 can be changed.

Therefore, in measuring the weight of the structure 100 provided with the column 120 having a slope with respect to the ground, it is necessary to prevent the arrangement angle of the column 120 with respect to the structure body 110 from being changed .

3 is a flowchart illustrating a method of measuring a weight of a structure according to an embodiment of the present invention. FIGS. 4 to 18 are intermediate diagrams illustrating the corresponding steps of FIG.

3 to 5, a foundation 200 on which the column 120 of the structure 100 is placed is installed in a place for constructing the structure 100 (S311). The foundation 200 supports the structure 100, so that the structure 100 can be manufactured more stably.

In addition, when the weight of the structure 100 is measured on a general ground, the ground may be depressed or deformed due to the load of the structure 100, vibration may be generated, and errors in weight measurement may be reflected.

Accordingly, it is preferable that the foundation 200 is installed on the ground to firmly support the structure 100. A plurality of bases 200 on which a plurality of columns 120 are seated can be installed.

The base 200 may include a first layer 210 and a second layer 220. The first layer 210 serves to distribute the load transferred from the column 120 to the ground. For this, the first layer 210 preferably has a sufficient area. In addition, the first layer 210 supports a load transmitted from the column 120 to prevent vibration from occurring.

The first layer 210 may be made of concrete and mortar, but the components constituting the first layer 210 are not limited thereto. It is preferable that the upper surface of the first layer 210 is horizontal so that the ground plane of the seating portion 122 of the column 120 can be properly grounded to the upper surface of the second layer 220.

The second layer 220 distributes the load transferred from the column 120 to the first layer 210. For this, the second layer 220 preferably has a sufficient area.

The second layer 220 may be made of metal, and iron may be used. However, the second layer 220 is not limited thereto. It is preferable that the upper surface of the second layer 220 is flat without bending so that the ground plane of the seating portion 122 of the column 120 can be properly grounded to the upper surface of the second layer 220.

Referring to FIGS. 3 and 6, after the base 200 is installed, a position guide 300 is installed on the base 200 (S312). The position guide 300 is installed to specify the position of the column 120, and the position guide 300 may be provided for each of the base 200.

Referring to FIG. 6, a position guide 300 is installed for each base 200. When the cross section of the seating part 122 of the column 120 is circular, as shown in the figure, a position guide 300 having a curved surface corresponding to the outer surface of the seating part 122 may be provided. However, The shape of the light emitting diode 300 is not limited thereto.

For example, the position guide may be implemented with at least one protrusion to simply fix the position of the column 120, and the position guide may be implemented with only the indication of the position of the column 120. [

Referring to FIG. 3, after the installation of the position guide 300 is completed, the column 120 is seated at the corresponding position, and the structure 100 is manufactured (S313).

The position of the column 120 is determined by the position guide 300 so that the structure 100 is manufactured and the structure body 110 can be supported by the column 120.

3 and 7, in order to measure the weight of the structure 100, a lifting device 400 for lifting the structure 100 in the vertical direction may be installed (S321). Thus, the lifting device 400 can lift the structure 100 vertically while supporting the lower portion of the structure body 110.

Referring to FIGS. 3 and 8, the lifting device 400 can separate the bottom surfaces of a plurality of columns provided in the structure with an inclination with respect to the ground, from the base on which the plurality of columns 120 are placed (S322) . The entire structure 100 moves in a direction perpendicular to the ground by lifting the lower portion of the structure body 110 by the lifting device 400.

As the structure 100 moves in the vertical direction, the bottom surface of each column 120 is spaced a certain height from the top surface of the corresponding base 200.

3 and 9, a shim plate may be inserted between the plurality of columns 120 and the base 200 after the plurality of columns 120 are spaced apart from the base 200 (S323).

FIG. 9 shows the insertion of the shim plate 500 between each column 120 and the corresponding base 200.

The shim plate 500 is inserted to level the structure 100. If the structure 100 is not aligned horizontally, the load may concentrate on a specific column side, resulting in a decrease in safety and an error in weight measurement may occur. Thus, it is desirable to perform gravimetric measurements after leveling of the structure 100, wherein a shim plate 500 may be used to level the structure 100. Therefore, the number of the shim plates 500 inserted between the bases 200 corresponding to the respective columns 120 may be different from each other.

In addition, the shim plate 500 is for supporting the structure 100 in a horizontal state, and another means (not shown) for performing horizontal alignment may replace the shim plate 500.

The weight of the structure 100 may be performed by lifting each column 120 in a direction perpendicular to the ground using a weighing machine. However, the arrangement angle of the column 120 with respect to the structure body 110 can be changed while the column 120 moves in the vertical direction.

10 is a view showing that the column departs from the correct position as it is spaced from the bottom surface.

10 shows that the column 120 loses its frictional force as it is spaced apart from the bottom surface of the base 200 so that the body support 121 of the column 120 is spread outwardly, ) Is deviated from the correct position.

If the seat 122 is deviated from the correct position during the measurement of the weight using the weighing machine, an error may be reflected in the weight measurement and a safety accident may occur.

Thus, a wire 610 may be used to prevent the placement angle of the column 120 from changing before the weight is measured using a weighing machine. In particular, a sling wire may be used to prevent the arrangement angle of the column 120 from being changed, but the present invention is not limited thereto.

Referring to FIGS. 3 and 11, a plurality of columns 120 may be connected by wires 610 (S324).

Fig. 11 illustrates that three adjacent columns 120 are connected by wires 610. Fig.

The wires 610 may be connected between adjacent columns 120, or may be connected between non-adjacent columns 120. For example, if there are four columns, the nearest column may be connected by wire 610, and the diagonally adjacent column may be connected by wire 610. [

11 illustrates that the connection point of the wire 610 in the column 120 is the seating part 122. However, the present invention is not limited thereto and the wire 610 may be connected through the body supporting part 121. [

The tension adjusting unit 620 controls the tension of the wire 610. A wire 610 is connected to each column 120 and a tension adjusting unit 620 adjusts the tension of the wire 610.

Referring to FIG. 3, tension adjustment between the columns 120 may be performed so that the tension of the wires 610 between the columns 120 is equal after the wires 610 are connected (S325).

In the present invention, the tension regulator 620 may be a push-pull device. That is, the tension adjusting unit 620 can adjust the tension of the wire 610 by using the hydraulic pressure. Thus, the operator can easily adjust the tension of the wire. During the weight measurement, the tension of the wire can be changed from time to time, and the operator can adjust the tension of the wire by referring to the tension detected momentarily. Tension sensing means (not shown) may be provided for sensing the tension.

3, 12, and 13, after the wire 610 is installed, a weight supporting portion may be installed on the column 120 (S326).

12 and 13 illustrate that the weight support 700 is installed on the seating portion 122 of the column 120. The weight supporting part 700 may be installed on both sides of the seating part 122 about the connection axis a1 of the column 120 connected to the structure body 110. [

The weight support 700 may include an upper flange 710, a lower flange 730, and a reinforcement 720. However, the shape of the weight supporting part 700 of the present invention is not limited thereto and can be implemented in various forms. However, it is preferable that the lower flange 730 is in contact with the weighing machine 800, and the lower portion of the lower flange 730 is flat.

The mounting point of the weight supporting part 700 is not limited to the installation of the wire 610 but may be any time before or after the mounting of the column 120 on the foundation 200. [ For example, when the seating part 122 is manufactured, the weight supporting part 700 can be installed together. Hereinafter, the weight supporting portion 700 is installed after the wire 610 is installed.

Referring to FIGS. 3, 14 and 15, after the weight supporting unit 700 is installed, the weighing machine 800 is installed (S327).

Fig. 14 shows that the weighing instrument 800 is placed in contact with the lower flange 730 of the weight support 700. Fig.

The weight measuring device 800 may not contact the lower flange 730 of the weight supporting part 700 according to the height of the weight supporting part 700 with respect to the foundation 200. In this case, the shim plate 900 may be inserted between the lower flange 730 and the weighing machine 800 as shown in Fig.

Referring to FIG. 3, the weight supporting unit 700 is lifted by the weight measuring apparatus 800, and the weight of the structure 100 to which the plurality of columns 120 are connected is measured (S328). The weight support 700 is lifted in the vertical direction with respect to the ground by the weighing machine 800 so that the entire structure 100 is lifted. At this time, since the respective columns 120 are connected by the wire 610, the arrangement angle of the column 120 with respect to the structure body 110 is not changed.

When the weighing is completed, the weighing machine 800 and the shim plates 500 and 900 are removed from the base 200, and each column 120 can be seated on the base 200. To this end, a lifting device 400 may be used. When the weight measurement by the weight measuring device 800 is completed, the lifting device 400 can support the structure body 110. Thus, the shim plates 500 and 900 and the weighing instrument 800 can be removed from the foundation 200 during the lifting device 400 supporting the structure body 110.

If the wire 610 is removed after the column 120 is placed on the foundation 200, the placement angle of the column 120 relative to the structure body 110 is changed, can do. The overall shape of the structure 100 may be partially deformed while carrying out the weighing operation, so that the internal force imbalance may temporarily occur. Herein, the fixed position of the seating part 122 is the position of the seating part 122 at the time when the seating part 122 is seated on the ground to support the body supporting part 121 in a state where the column 120 is coupled to the structure body. Position. For example, when the structure is placed on the ground and plays a normal role, it can be understood that the position of the seat portion 122 with respect to the body support portion 121 is the fixed position of the seat portion 122. [

3 and 16, a separation preventing part 1000 for preventing the column 120 from being displaced in the right direction may be installed in the base 200 before the step of disconnecting the wire 610 (S329 ).

Fig. 16 shows that a separation preventing part 1000 for supporting the outside of the seating part 122 is provided on each base 200. Fig. At least one departure prevention part 1000 may be installed for each foundation 200.

On the other hand, the installation time of the departure prevention part 1000 is not limited to the time after the weight measurement, but may be performed any time after the foundation 200 is installed. For example, the departure prevention part 1000 can be installed on the foundation 200 together with the position guide 300. Hereinafter, it will be described that the departure prevention unit 1000 is installed after the weight measurement.

Referring to FIGS. 3 and 17, after the departure prevention part 1000 is installed, the column 120 is seated on the foundation 200 (S330).

17 shows that the seating part 122 of the column 120 is seated on the base 200 and the outside is supported by the separation preventing part 1000. [ When the position guide 300 is protruded from the base 200, the seating part 122 can be positioned between the position guide 300 and the departure prevention part 1000.

3 and 18, after the column 120 is seated on the foundation 200, the wire 610 is removed from the column 120 (S331).

18 shows that the wire 610 has been removed from each column 120. FIG. As described above, the tension regulator 620 can be a push-pull device, which allows the operator to adjust the hydraulic pressure to relieve tension on the wire 610 and remove the wire 610 from the column 120 .

The separation angle of the column 120 with respect to the structure body 110 can be prevented from being changed because the separation preventing portion 1000 supports the seating portion 122 even if the wire 610 is removed.

Although the description has been made of the case where the weight of the structure 100 is measured through the steps S311 to S331 shown in FIG. 3, the weight measurement of the structure may be implemented by omitting some steps. For example, during the production of the structure, the weight of the structure 100 can be measured at any time through the steps S321 to S331. After the weight of the structure 100 is measured for the first time, the installation of the lifting device, the connection of the column using the wire, the installation of the weight supporting part, and the installation of the weight measuring device may have already been performed. Therefore, the steps S321, S324, S326, and S327 may be omitted in the subsequent weighing process.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: Offshore structures
110: Structure body
120: Column
121: Body support
122:
200: Foundation
300: Location guide
400: lifting device
500, 900: Shim plate
610: Wire
620:
700: Heavy weight support
800: Weighing machine
1000:

Claims (7)

A bottom surface of a plurality of columns provided on a structure with an inclination relative to the ground is spaced apart from a foundation on which the plurality of columns are seated,
A shim plate is inserted between the plurality of columns and the base,
Connecting the plurality of columns using a wire,
Measuring the weight of the structure to which the plurality of columns are connected,
Measuring the weight of the structure,
Providing a plurality of columns with weight supports,
And the weight supporting portion is lifted by a gravimeter to measure the weight of the structure. The method according to claim 1,
Further comprising installing a location guide on the foundation to specify the location of the plurality of columns. The method according to claim 1,
Further comprising adjusting the tension of the wire between connecting the plurality of columns and measuring the weight of the structure. The method of claim 3,
Wherein adjusting the tension of the wire comprises adjusting the tension using a push-pull device. delete The method according to claim 1,
Further comprising inserting a shim plate between the weighing instrument and a bottom surface of the plurality of columns. The method according to claim 1,
A separation preventing portion for preventing the deviation of the plurality of columns from the correct position is provided on the base,
And disconnecting the wire. ≪ Desc / Clms Page number 24 >
KR1020150114492A 2015-08-13 2015-08-13 Method for measuring weight of structure KR101762719B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014085305A (en) 2012-10-26 2014-05-12 Mitsubishi Heavy Ind Ltd Strength testing apparatus for framework structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150010869A (en) 2013-07-19 2015-01-29 대우조선해양 주식회사 Load measuring device of structure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014085305A (en) 2012-10-26 2014-05-12 Mitsubishi Heavy Ind Ltd Strength testing apparatus for framework structure

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