KR102373756B1 - Method and device for evaluating the support gap of piping - Google Patents

Abstract

A method for evaluating a support interval of a pipe according to an embodiment of the present invention includes the steps of: (a) extracting an object of a pipe and a support for a part selected from three-dimensional modeling information; (b) generating a pipe line according to the extracted pipes; (c) selecting the extracted support for the piping line to correspond to the input condition; (d) the selected support corresponds to the piping of the piping line, calculating the distance between the selected supports; (e) The evaluation section is set to correspond to the calculated distance between the supports, and the attribute information of the pipe and the attribute information of the support in the evaluation section are referenced, and the load, maximum deformation and bending stress of the pipe in the evaluation section are calculated. step; and (f) evaluating an interval between supports corresponding to the evaluation section based on the calculated pipe load, maximum deformation, and bending stress.

Description

Method and device for evaluating the support gap of piping

The present invention relates to a method and apparatus for evaluating a support gap of a pipe, and more particularly, based on the attribute information of the support supporting the pipe and the pipe modeled in three dimensions in the three-dimensional modeling information of the plant equipment, the spacing of the support It relates to a method and apparatus for evaluating the support gap of a pipe that can evaluate the adequacy of

In the case of a manufacturing plant in which a production line is operated, particularly a semiconductor plant, the complexity of the piping design of the process is continuously increasing with the development of the industry. As the process using production equipment such as semiconductors becomes more complex, in order to facilitate maintenance and error detection, each facility and pipe constituting the process is designed in three dimensions to construct three-dimensional modeling information. In addition, in the industrial field, the 3D modeling information can be used to manage and maintain the process line.

In building such three-dimensional modeling information, in order to minimize design errors, large-scale design-related personnel collaborate and process and utility (eg, cooling sources (eg, gas, water, fluid such as air), a heating source (eg, heat, steam, etc.), and a power source (eg, electric power, steam, etc.) are divided, stored, and managed.

Plant equipment design is made using BIM (building information modeling). BIM basically performs three-dimensional modeling of the piping system. For this reason, studies on piping evaluation and piping design modeling are mainly conducted.

On the other hand, a support is used to support the pipe, and the support can be maintained in a stable installed state by supporting the pipe. Studies on evaluation of such supports and support design modeling are not actively conducted. In particular, the support is designed based on the experience of a designer or operator rather than considering the attribute information of the pipe, and may be designed to be installed in an excessive number than necessary. In addition, when a problem occurs due to the support, only reinforcement through the addition of support is being considered. For this reason, the support for supporting the pipe increases the cost of the plant equipment and also reduces the stability of the plant equipment.

The technical problem to be achieved by the method and apparatus for evaluating the support interval of a pipe according to the technical idea of the present invention is a pipe that can be provided by extracting the pipe and the support from 3D modeling information and setting the interval of the supports corresponding to a predetermined condition It is to provide a method and apparatus for evaluating the support gap of

In addition, the technical problem to be achieved by the method and apparatus for evaluating the support interval of a pipe according to the technical idea of the present invention is a pipe support that enables evaluation of the adequacy of the spacing of the supports based on the extracted attribute information of the pipe and the support. To provide a gap evaluation method and apparatus.

In addition, the technical problem to be achieved by the method and apparatus for evaluating the support gap of a pipe according to the technical idea of the present invention is to provide a method and apparatus for evaluating the support gap of a pipe that can reduce the construction cost and construction time according to the support .

The technical task to be achieved by the method and apparatus for evaluating the support gap of a pipe according to the technical spirit of the present invention is not limited to the tasks mentioned above, and another task that is not mentioned will be clearly understood by those skilled in the art from the following description will be able

A method for evaluating a support interval of a pipe according to an embodiment according to the technical idea of the present invention comprises the steps of: (a) extracting an object of a pipe and a support for a part selected from three-dimensional modeling information; (b) generating a pipe line according to the extracted pipes; (c) selecting the extracted support for the piping line to correspond to the input condition; (d) the selected support corresponds to the piping of the piping line, calculating the distance between the selected supports; (e) The evaluation section is set to correspond to the calculated distance between the supports, and the attribute information of the pipe and the attribute information of the support in the evaluation section are referenced, and the load, maximum deformation and bending stress of the pipe in the evaluation section are calculated. step; and (f) evaluating an interval between supports corresponding to the evaluation section based on the calculated pipe load, maximum deformation, and bending stress.

In addition, (c) step, (c1) the step of designating the support extracted in step (a) as a source; (c2) each of the pipes of the pipe line generated in (b) being designated as a primary target; (c3) referencing the location information of the source and the location information of the primary target from the three-dimensional modeling information; (c4) inputting an input condition, and processing a primary target that satisfies the input condition according to the coordinate value as a secondary target; (c5) calculating the distance between the source and the secondary target, and processing the secondary target corresponding to the distance between the source and the secondary target satisfying the input condition as a final target; and (c6) selecting a source to correspond to the final target, and selecting a support corresponding to the selected source.
In addition, the position information includes a three-dimensional coordinate value, the input condition is any one of the x-axis, y-axis, and z-axis, the input condition is the z-axis, the coordinate value of the source and the coordinate value of the primary target are compared, the source When the coordinate value of and the coordinate value of the primary target have different x-axis coordinate values or y-axis coordinate values with respect to the same z-axis coordinate value, it is considered that the primary target is not aligned with respect to the z-axis and is excluded. , when the input condition is the x-axis, the coordinate value of the source and the coordinate value of the primary target are compared, so that the coordinate value of the source and the coordinate value of the primary target are different y-axis coordinate values or z-axis coordinate values for the same x-axis coordinate value When , it is considered that the primary target is not aligned with respect to the x-axis, and the input condition is the y-axis, and the coordinate value of the source and the coordinate value of the primary target are compared, and the coordinate value of the source and the primary When the coordinate values of the target have different x-axis coordinate values or z-axis coordinate values with respect to the same y-axis coordinate value, it is considered that the primary target is not aligned with respect to the y-axis and is excluded, and the input condition is satisfied. The primary target is a primary target that is not excluded, and when the distance between the source and the secondary target is less than or equal to a predetermined distance, the secondary target may be processed as a final target.

In addition, (e) step, (e1) the step of referencing the attribute information of the pipe and the attribute information of the support corresponding to the set evaluation section; (e2) calculating the load of the pipe based on the distance of the evaluation section and the referenced pipe attribute information; and (e3) calculating the maximum amount of deformation and bending stress of the pipe in combination with the distance of the evaluation section and the referenced support attribute information.

In addition, the attribute information of the pipe includes the material of the pipe, the outer diameter of the pipe, the thickness of the pipe, the type of utility, the physical property according to the material of the pipe, and the physical property according to the type of the utility. It includes density, Young's modulus, yield stress, and heat transfer coefficient. Physical properties according to the type of utility include density and viscosity of the utility, and the property information of the support indicates the form of a support, which is a simple support or a fixed support. In the step (e2), the difference between the cross-sectional area according to the outer diameter of the pipe and the cross-sectional area according to the inner diameter of the pipe, which is a value obtained by subtracting the thickness of the pipe from the outer diameter of the pipe, the distance of the evaluation section and the density of the pipe are multiplied to determine the weight of the pipe calculating; calculating the weight of the utility by multiplying the cross-sectional area according to the inner diameter of the pipe, the distance of the evaluation section, and the density of the utility; And the weight of the pipe and the weight of the utility are summed and multiplied by a safety factor to calculate the load of the pipe.

In addition, the step (e3), calculating the maximum deformation amount of the pipe using the load of the pipe, the distance of the evaluation section, the longitudinal modulus of elasticity according to the material of the pipe, and the secondary sectional moment of the pipe; and calculating the bending stress of the pipe using the load of the pipe, the distance of the evaluation section, the shape coefficient of the pipe, and the secondary cross-sectional moment of the pipe.

In addition, in step (f), when the maximum strain amount of the pipe is smaller than the reference strain corresponding to 1/610 to 1/590 of the distance of the evaluation section, the evaluation section is evaluated as safe, and the bending stress of the pipe is the yield of the pipe When it is smaller than the reference stress corresponding to 3/5 to 7/10 of the stress, the evaluation section may be evaluated as safe.

In addition, the apparatus for evaluating a support interval of a pipe according to an embodiment according to the technical idea of the present invention includes: an extraction unit for extracting an object of a pipe and a support for a part selected from 3D modeling information; a line generating unit generating a pipe line according to the pipes extracted by the extraction unit; a support selection unit receiving an input condition and selecting the support extracted by the extraction unit with respect to the piping line generated by the line generation unit to correspond to the input condition; an interval calculating unit for matching the support selected in the support selection unit to the pipe of the piping line and calculating a distance between the selected supports; Information to set the evaluation section corresponding to the calculated distance between the supports, refer to the attribute information of the pipe in the evaluation section and the attribute information of the support, and calculate the load, maximum deformation, and bending stress of the pipe corresponding to the evaluation section output unit; and an evaluation unit for evaluating an interval between supports corresponding to an evaluation section based on the calculated pipe load, maximum deformation, and bending stress.

In addition, the information calculation unit refers to the attribute information of the pipe and the attribute information of the support corresponding to the set evaluation section, calculates the load of the pipe based on the distance of the evaluation section and the attribute information of the referenced pipe, and calculates the load of the pipe It can be calculated as the maximum deformation amount and bending stress of the pipe in combination with the distance of the evaluation section and the referenced support attribute information.

In addition, the attribute information of the pipe includes the material of the pipe, the outer diameter of the pipe, the thickness of the pipe, the type of utility, the physical property according to the material of the pipe, and the physical property according to the type of the utility. It includes density, Young's modulus, yield stress, and heat transfer coefficient. Physical properties according to the type of utility include density and viscosity of the utility, and the property information of the support indicates the form of a support, which is a simple support or a fixed support. Including, the information calculating unit calculates the weight of the pipe by multiplying the cross-sectional area according to the outer diameter of the pipe and the cross-sectional area according to the inner diameter of the pipe, which is a value obtained by subtracting the thickness of the pipe from the outer diameter of the pipe, the distance of the evaluation section, and the density of the pipe, The weight of the utility is calculated by multiplying the cross-sectional area according to the inner diameter of the pipe, the distance of the evaluation section, and the density of the utility. The maximum deformation amount of the pipe is calculated using the distance of the section, the longitudinal modulus of elasticity according to the material of the pipe, and the secondary sectional moment of the pipe. can be used to calculate the bending stress of the pipe.

In addition, when the maximum strain of the pipe is smaller than the standard strain corresponding to 1/610 to 1/590 of the distance of the evaluation section, the evaluation unit evaluates the evaluation section as safe, and the bending stress of the pipe is 3/ of the yield stress of the pipe When it is less than the reference stress corresponding to 5 to 7/10, the evaluation unit may evaluate the evaluation section as safe.

The method and apparatus for evaluating a support gap of a pipe according to embodiments according to the technical spirit of the present invention have the following effects.

(1) Intervals of supports corresponding to predetermined conditions may be set and provided based on piping and supports extracted from 3D modeling information.

(2) The adequacy of the spacing between supports can be evaluated based on the extracted attribute information of piping and supports.

(3) The construction cost and construction time according to the support can be reduced.

However, the effect that can be achieved by the method and apparatus for evaluating the support gap of a pipe according to an embodiment of the present invention is not limited to those mentioned above, and other effects not mentioned are to those skilled in the art from the description below. can be clearly understood.

In order to more fully understand the drawings cited herein, a brief description of each drawing is provided.
1 is a view showing an apparatus for evaluating a support gap of a pipe according to an embodiment of the present invention.
2 is a view showing a screen outputting physical properties according to the material of the pipe and the physical property according to the utility in the pipe information referenced in the support interval evaluation apparatus of the pipe according to an embodiment of the present invention.
3 is a view showing a screen output by the evaluation unit in the support gap evaluation apparatus for a pipe according to an embodiment of the present invention.
4 is a view illustrating a screen in which an evaluation result by an evaluation unit is outputted to an object of a pipe output in a three-dimensional shape in the apparatus for evaluating the support gap of a pipe according to an embodiment of the present invention.
5 is a flowchart illustrating a method for evaluating a support gap of a pipe according to an embodiment of the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail through the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that the present invention includes all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, numbers (eg, first, second, etc.) used in the description process of the present specification are only identification symbols for distinguishing one component from other components.

In addition, in this specification, when a component is referred to as “connected” or “connected” with another component, the component may be directly connected or directly connected to the other component, but in particular It should be understood that, unless there is a description to the contrary, it may be connected or connected through another element in the middle.

In addition, in the present specification, two or more components may be combined into one component, or one component may be divided into two or more for each more subdivided function. In addition, each of the components to be described below may additionally perform some or all of the functions of other components in addition to the main functions they are responsible for, and some of the main functions of each component may have different functions. It goes without saying that it may be performed exclusively by the component.

Hereinafter, embodiments according to the technical spirit of the present invention will be described in detail in turn.

1 is a view showing an apparatus for evaluating a support gap of a pipe according to an embodiment of the present invention, and FIG. 2 is a view showing an apparatus for evaluating a support gap of a pipe according to an embodiment of the present invention. It is a view showing a screen outputting a physical property value according to the property value and the utility value according to the utility, FIG. 3 is a view showing a screen output by the evaluation unit in the support gap evaluation apparatus of the pipe according to an embodiment of the present invention, FIG. are diagrams showing a screen in which the evaluation result by the evaluation unit is outputted to the object of the pipe output in a three-dimensional shape in the apparatus for evaluating the support gap of the pipe according to an embodiment of the present invention.

As shown in FIGS. 1 to 4 , the apparatus 100 for evaluating the support gap of a pipe according to an embodiment of the present invention includes an extracting unit 101 , a line generating unit 102 , a support selecting unit 103 , and an interval. It includes a calculation unit 104, an information calculation unit 105 and an evaluation unit 106, but extracts the pipe and support for the selected part from the 3D modeling information for plant equipment, etc., so as to support the pipe while being spaced apart from each other It can be used to evaluate the spacing of the located supports. Here, the pipe is made of metal (eg, stainless steel, carbon steel, brass, copper, bronze, aluminum, gray cast iron, titanium alloy, etc.) or plastic (eg, polyvinyl chloride (PVC), polyethylene, etc.) and utilities (eg, water, air, gas (eg, nitrogen gas, helium gas, argon gas, etc.), heat, steam, etc.) may flow therein, and piping materials (eg, valves) may flow therein. (valve), elbow pipe (elbow), nozzle (nozzle), flange (flange), reducer (reducer), etc.) can be connected. In addition, the support may be made of any one of a simple support for supporting the pipe in a movable and rotatable state and a fixed support for supporting the pipe in a fixed state.

On the other hand, the 3D modeling information includes components such as piping, piping materials, supports, etc. as 3D modeling objects, and may include location information and property information about the 3D modeling object, 3D modeling objects, location information and attribute information may be stored in the form of a database.

The extraction unit 101 may extract the 3D modeling object of the pipe and the support from the 3D modeling information. In particular, the operator may input a portion of the 3D modeling information corresponding to the pipe and support to be extracted into the extraction unit 101 . Here, the extraction unit 101 may select the part input by the operator, and extract the object of the pipe and the support for the selected part.

In addition, the operator may additionally input a utility for flowing the pipe into the extraction unit 101 to select it. For example, when an operator inputs water, the extraction unit 101 may extract an object of a pipe through which water flows and an object of a support supporting the pipe according to the part input by the worker. That is, the operator may select a pipe to be evaluated from the 3D modeling information and a support corresponding to the pipe.

The line generating unit 102 may generate a pipe line according to the pipes extracted by the extracting unit 101 . Here, the line generating unit 102 may generate a piping line for pipes connected by a piping material among the extracted pipes. That is, the line generating unit 102 may read connection information of pipes through the piping materials and generate a piping line based on the pipes connected by the piping materials. A pipe or plumbing material to which no pipe or plumbing material is connected in a plumbing line may be created as an end of the plumbing line. That is, the piping line may be created by being composed of one pipe or even a pipe material having no connection information.

The support selection unit 103 may receive an input condition, and may select the support extracted by the extraction unit 101 for the piping line generated by the line generation unit 102 to correspond to the input condition. That is, the support selection unit 103 may select the pipe extracted from the pipe line based on the input condition, and may select the extracted support corresponding to the selected pipe.

The support selection unit 103 may designate the support extracted by the extraction unit 101 as a source. Here, the extracted support consists of a plurality, and the support selector 103 may designate each extracted support in the form of source 1, source 2, source 3, etc. there is.

In addition, the support selection unit 103 may extract only the piping excluding the piping material from the piping line generated by the line generation unit 102 , and designate the extracted piping as a first target. Here, the pipe line may be made of a plurality of pipes, and the primary target may be made of a plurality of pipes.

In a state in which the source and the primary target are designated as described above, the support selector 103 may refer to the position information of the source and the position information of the primary target from the 3D modeling information. Here, the location information may include a three-dimensional coordinate value. The support selector 103 may check the location of the source and the location of the primary target.

An input condition may be input by an operator to the support selector 103 . Here, the input condition may mean an alignment condition of the source and the primary target, that is, the support and the pipe, and the alignment criterion of the support and the pipe may be any one of the x-axis, the y-axis, and the z-axis.

For example, the operator may input an input condition based on the z-axis to the support selector 103 . Here, the support selector 103 may compare the coordinate value of the source and the coordinate value of the primary target. In addition, when the coordinate value of the source and the coordinate value of the primary target have different x-axis coordinate values or y-axis coordinate values with respect to the same z-axis coordinate value, the support selection unit 103 sets the primary target to the z-axis. It can be considered as not sorted and excluded.

In addition, the operator may input an input condition based on the x-axis to the support selection unit 103 . Here, the support selector 103 may compare the coordinate value of the source and the coordinate value of the primary target. In addition, when the coordinate value of the source and the coordinate value of the primary target have different y-axis coordinate values or z-axis coordinate values with respect to the same x-axis coordinate value, the support selection unit 103 sets the primary target to the x-axis It can be considered as not sorted and excluded.

In addition, the operator may input an input condition based on the y-axis to the support selection unit 103 . Here, the support selector 103 may compare the coordinate value of the source and the coordinate value of the primary target. In addition, when the coordinate value of the source and the coordinate value of the primary target have different x-axis coordinate values or z-axis coordinate values with respect to the same y-axis coordinate value, the support selection unit 103 sets the primary target to the y-axis. It can be considered as not sorted and excluded.

Meanwhile, the support selector 103 may process a primary target that has not been excluded (ie, a primary target that satisfies the input condition) as a secondary target.

Also, the support selector 103 may calculate a distance between each source and each secondary target. Here, the calculated distance between the source and the secondary target may mean a straight-line distance based on the location information of the source and the location information of the secondary target. Also, when the distance between the source and the secondary target is greater than a predetermined distance, the support selection unit 103 may exclude the secondary target. Meanwhile, when the distance between the source and the secondary target is less than or equal to a predetermined distance, the support selector 103 may process the secondary target as a final target without excluding the secondary target. In addition, the predetermined distance may be input to the support selection unit 103 by the operator and selected by the operator.

As a result, the support selector 103 may select a source corresponding to the final target and select only the support corresponding to the selected source.

The spacing calculating unit 104 may correspond to the support selected by the support selection unit 103 to the piping of the piping line, and may calculate a distance between the selected supports.

The interval calculator 104 may list the supports selected by the support selector 103 based on the three-dimensional coordinate value. Here, the selected supports may be arranged in ascending order according to a distance based on a reference point of (0, 0, 0). That is, the interval calculating unit 104 may list the selected supports in the order of the selected supports having the three-dimensional coordinate value gradually away from the coordinate value of (0, 0, 0).

In the arrangement state of the selected supports as described above, the interval calculating unit 104 may calculate the distances between the selected supports, respectively. For example, the selected and listed supports may be designated in the form of support 1, support 2, support 3, support 4, and the like, respectively. Here, the interval calculating unit 104 may calculate the distance between the support 1 and the support 2, calculate the distance between the support 2 and the support 3, and calculate the distance between the support 3 and the support 4 space.

The information calculation unit 105 may set an evaluation section according to the interval for which the distance is calculated by the interval calculation unit 104 , and refer to attribute information of a pipe and attribute information of a support corresponding to the set evaluation section. Here, the information calculating unit 105 may calculate the load, the maximum amount of deformation, and the bending stress of the pipe corresponding to the evaluation section based on the attribute information of the pipe and the attribute information of the support.

The information calculator 105 may refer to attribute information of a pipe corresponding to the evaluation section and attribute information of a pair of supports from the 3D modeling information. Here, the attribute information of the pipe may include the material of the pipe, the outer diameter of the pipe, the thickness of the pipe, the type of utility, and the like, and the attribute information of the support may be a form of a support, for example, a simple support or a fixed support. . In addition, the property information of the pipe may include physical properties of the pipe according to the material of the pipe, for example, the density of the pipe, the Young's modulus, the yield stress, the heat transfer coefficient, and the like, and the density according to the type of utility , viscosity, and the like (see FIG. 2 ).

The information calculating unit 105 may calculate the load of the pipe based on the distance of the evaluation section and the referenced pipe attribute information.

For example, the information calculating unit 105 may calculate the weight of the pipe and the utility weight corresponding to the evaluation section. Here, the weight of the pipe corresponding to the evaluation section is the difference between the cross-sectional area according to the outer diameter of the pipe and the cross-sectional area according to the inner diameter of the pipe (that is, the value obtained by subtracting the thickness of the pipe from the outer diameter of the pipe), the distance of the evaluation section, and the density of the pipe However, it can be calculated by multiplying the difference between the cross-sectional area according to the outer diameter of the pipe and the cross-sectional area according to the inner diameter of the pipe, the distance of the evaluation section, and the density of the pipe. In addition, the weight of the utility corresponding to the evaluation section is calculated using the cross-sectional area according to the inner diameter of the pipe, the distance of the evaluation section, and the density of the utility, but is calculated by multiplying the cross-sectional area according to the inner diameter of the pipe, the distance of the evaluation section, and the density of the utility can be

In addition, the weight of the pipe and the weight of the utility corresponding to the evaluation section in the information calculating unit 105 are summed and multiplied by a safety factor, so that the load of the pipe can be calculated. Here, the safety factor may be generally 2.0 based on the ASME Code, and may be set by an operator.

The information calculating unit 105 may calculate the maximum amount of deformation and bending stress of the pipe by combining the load of the pipe with the distance of the evaluation section and the referenced attribute information of the support. Here, due to the attribute information of the support, the evaluation section may consist of a combination of simple supports, a combination of fixed supports, and a combination of simple and fixed supports.

For example, the information calculating unit 105 may calculate the maximum amount of deformation of the pipe using the load of the pipe, the distance of the evaluation section, the modulus of elasticity according to the material of the pipe, and the secondary sectional moment of the pipe. Here, the secondary cross-sectional moment of the pipe is different depending on the shape of the pipe, and may be calculated based on the outer diameter of the pipe and the inner diameter of the pipe.

Meanwhile, the maximum deformation amount may be calculated as a different value according to attribute information of the support.

For example, when the evaluation section is a combination of simple supports, the maximum amount of deformation may be calculated using Equation (1).

식 (1)

Equation (1)

In addition, when the evaluation section is a combination of a simple support and a support support, the maximum amount of deformation can be calculated using Equation (2).

식 (2)

Equation (2)

Also, when the evaluation section is a combination of support supports, the maximum amount of deformation can be calculated using Equation (3).

식 (3)

Equation (3)

In Equation (1), Equation (2), and Equation (3), w is the load of the pipe, l is the distance of the evaluation section, E is the modulus of longitudinal elasticity according to the material of the pipe, and I is the second order of the pipe is the cross-sectional moment.

In addition, the information calculating unit 105 may calculate the bending stress of the pipe by using the load of the pipe, the distance of the evaluation section, the shape coefficient of the pipe, and the secondary sectional moment of the pipe. Here, the bending stress may be calculated as a different value according to attribute information of the support.

For example, when the evaluation section is a combination of simple supports or a combination of a simple support and a supporting support, the bending stress may be calculated using Equation (4).

식 (4)

Equation (4)

Also, when the evaluation interval is a combination of support supports. The bending stress can be calculated using Equation (5).

식 (5)

formula (5)

In Equations (4) and (5), w is the load of the pipe, l is the distance of the evaluation section, c is the shape coefficient of the pipe, and I is the secondary cross-sectional moment of the pipe. In addition, the shape factor of the pipe differs depending on the shape of the pipe, for example, when the pipe has a circular cross section, it is 1/2 of the outer diameter of the pipe, and when the pipe has a square cross section, the shape factor of the pipe is the pipe 1/2 of the width of

The information calculating unit 105 may calculate the load of the pipe, the maximum amount of deformation of the pipe, and the bending stress of the pipe for the plurality of evaluation sections individually.

The evaluation unit 106 may evaluate an interval between supports corresponding to the evaluation section based on the maximum deformation amount of the pipe and the bending stress of the pipe calculated to correspond to the evaluation section, respectively.

In addition, the evaluation unit 106 generates and outputs the weight of the pipe, the weight of the utility, the load of the pipe, the longitudinal modulus of the pipe, the maximum deformation amount, the reference deformation amount, the bending stress, the allowable stress, etc. in the form of a table calculated for each evaluation section It can be done (see Figure 3). In addition, the table may include attribute information of the pipe corresponding to the evaluation section and location information of supports (refer to FIG. 3 ). That is, the evaluation unit 106 may output information used to evaluate the support interval in the form of a table so that it can be confirmed by the operator.

In particular, the evaluation unit 106 may compare the maximum deformation amount of the pipe and the bending stress of the pipe with reference values, respectively. Here, the reference value of the maximum amount of deformation of the pipe means the standard amount of deformation of the pipe, and the reference amount of deformation of the pipe is preferably 1/610 to 1/590, preferably 1/600 of the distance of the evaluation section. . In addition, the reference value of the bending stress of the pipe means the reference stress of the pipe, and the reference stress of the pipe is generated according to the material of the pipe, preferably 3/5 to 7/10 of the yield stress of the pipe, preferably 2 It may be a value corresponding to /3.

Meanwhile, the standard strain amount of the pipe and the standard stress of the pipe may be basically set based on the ASME Code, and in some cases may be set by the operator.

When the maximum deformation amount of the pipe calculated by the information calculating unit 105 is smaller than the reference deformation amount of the pipe, the evaluation unit 106 can evaluate the evaluation section as safe (true), while the information calculating unit 105 When the maximum deformation amount of the pipe calculated by the above is equal to or greater than the reference deformation amount of the pipe, the evaluation unit 106 may evaluate the evaluation section as false. Here, the evaluation unit 106 may output the result according to the evaluation for each evaluation section by including it in a table (see FIG. 3 ).

In addition, when the bending stress of the pipe calculated by the information calculating unit 105 is smaller than the reference stress of the pipe, the evaluation unit 106 can evaluate the evaluation section as safe (true), whereas the bending stress of the pipe is When it is equal to or greater than the reference stress of the pipe, the evaluation unit 106 may evaluate the evaluation section as false. Here, the evaluation unit 106 may output the result according to the evaluation for each evaluation section by including it in a table (see FIG. 3 ).

Also, the evaluation unit 106 may output the pipe object output in a three-dimensional shape corresponding to the evaluation section in different colors according to the evaluation result (refer to FIG. 4 ). For example, the pipe corresponding to the evaluation section evaluated as dangerous for any one of the maximum deformation amount and the bending stress may be output in red, and corresponding to the evaluation section evaluated as safe for both the maximum deformation amount and the bending stress. The pipe may be output in blue. For this reason, the operator can easily check the appropriateness of the spacing between the supports through the color of the pipe output in a three-dimensional shape. That is, supports corresponding to pipes output in blue may be recognized as installed at safe intervals, and supports corresponding to pipes output in red may be recognized as installed at dangerous intervals. Accordingly, the operator can easily recognize and determine the appropriateness of the spacing of the supports based on the evaluation result by the evaluation unit 106 .

The support interval evaluation apparatus 100 for piping according to this embodiment extracts piping and support for a selected part from the three-dimensional modeling information, and selects a support corresponding to an input condition for a piping line generated based on piping. there is. Here, the spacing of the supports may be set based on the supports selected according to the input condition.

In addition, the distance between the supports may be calculated, and an evaluation interval corresponding to the support interval may be set. Here, the pipe support interval evaluation apparatus 100 refers to the attribute information of the pipe corresponding to the evaluation section and the attribute information of the support from the three-dimensional modeling information, and the load of the pipe, the maximum amount of deformation of the pipe, and the The bending stress of the pipe can be calculated. The maximum deformation amount of the pipe and the bending stress of the pipe may be compared with reference values and used to generate comparative results. Based on the comparison result, the appropriateness of the spacing of the supports may be evaluated. In addition, the operator can visually check the result according to the evaluation of the adequacy of the spacing between the supports, so that the appropriateness of the spacing between the supports can be improved by adjusting the positions of the supports.

In addition, the support interval evaluation apparatus 100 of the pipe according to this embodiment can check the result according to the evaluation of the appropriateness of the spacing between the supports, and can prepare the construction of the supports based on the result, the construction cost of the supports and to reduce construction time.

On the other hand, the support gap evaluation apparatus 100 of the pipe of the present embodiment may be a device including a program stored in a memory and configured to be executed by one or more processors.

5 is a flowchart illustrating a method for evaluating a support gap of a pipe according to an embodiment of the present invention.

As shown in FIG. 5 , the method for evaluating the support interval of a pipe according to an embodiment of the present invention extracts the pipe and the support for the selected part from the three-dimensional modeling information about plant equipment, etc., and supports the pipe by being spaced apart from each other. It is possible to evaluate the spacing of the supports positioned to do so. Here, the pipe is made of metal (eg, stainless steel, carbon steel, brass, copper, bronze, aluminum, gray cast iron, titanium alloy, etc.) or plastic (eg, polyvinyl chloride (PVC), polyethylene, etc.) and within which utilities (eg, water, air, gas (eg, nitrogen gas, helium gas, argon gas, etc.), heat, steam, etc.) may flow, and piping materials (eg, valves) may flow therein. (valve), elbow pipe (elbow), nozzle (nozzle), flange (flange), reducer (reducer), etc.) can be connected. In addition, the support may be made of any one of a simple support for supporting the pipe to be movable and rotatable and a fixed support for supporting the pipe to be fixed. On the other hand, the 3D modeling information includes components such as piping, piping materials, supports, etc. as 3D modeling objects, and may include location information and property information about the 3D modeling object, 3D modeling objects, location information and attribute information may be stored in the form of a database. In addition, the method for evaluating the support gap of the pipe according to the present embodiment will be described using the support gap evaluation apparatus 100 for the pipe.

First, a step S101 of extracting a 3D modeling object of a pipe and a support from 3D modeling information may be performed. Step S101 may be performed by the extraction unit 101 .

Also, in step S101 , a portion of the 3D modeling information corresponding to the pipe and support to be extracted may be selected by the operator and input to the extraction unit 101 . Here, the object of the pipe and support for the part input to the extraction unit 101, that is, the part selected by the operator may be extracted.

In addition, the operator may additionally input a utility for flowing the pipe into the extraction unit 101 to select it. For example, when an operator inputs water, the extraction unit 101 may extract an object of a pipe through which water flows and an object of a support supporting the pipe according to the part input by the worker. That is, the operator can select the pipe and support to be evaluated from the 3D modeling information to some extent.

Subsequently, a step (S102) of generating a pipe line according to the extracted pipes may be performed. Step S102 is performed by the line generating unit 102 , and a piping line may be generated for pipes connected by a piping material among the extracted pipes. That is, connection information of pipes may be read through the piping materials, and a piping line may be generated based on the pipes connected by the piping materials. Here, a pipe or a pipe material to which a pipe or a pipe material is not connected in the pipe line may be generated as an end of the pipe line. That is, the piping line may be created by being composed of one pipe or even a pipe material having no connection information.

Subsequently, a step (S103) in which the extracted support for the piping line is selected to correspond to the input condition may be performed. In step S103 , the input condition is input to the support selection unit 103 , and the support selection unit 103 is extracted by the extraction unit 101 from the piping line generated by the line generation unit 102 based on the input condition. The supported support can be selected to correspond to the input condition. That is, the support selection unit 103 may select the extracted support corresponding to the selected pipe.

In addition, step S103 may be specifically performed by the support selection unit 103 as follows.

First, a step of the support selection unit 103 designating the support extracted through step S101 as a source may be performed. Here, the extracted support is made in plurality, and the support selector 103 may designate each extracted support as a source 1 , a source 2 , a source 3 , and the like.

Subsequently, the support selection unit 103 extracts only the piping excluding the piping material from the piping line generated by the line generation unit 102, and designating the extracted piping as a primary target (first target) may be performed. Here, the pipe line may be made of a plurality of pipes, and the primary target may be made of a plurality of pipes.

Subsequently, in a state in which the source and the primary target are designated, the step of referring to the position information of the source and the position information of the primary target by the support selection unit 103 from the 3D modeling information may be performed. Here, the position information may include a three-dimensional coordinate value, and the support selector 103 may confirm the position of the source and the position of the primary target.

Subsequently, a step of inputting the input condition to the support selection unit 103 may be performed. Here, the input condition may mean an alignment condition of the source and the primary target, that is, the support and the pipe, and the alignment criterion of the support and the pipe may be any one of the x-axis, the y-axis, and the z-axis. In addition, the input condition may be input to the support selection unit 103 by the operator.

For example, the operator may input an input condition based on the z-axis to the support selector 103 . Here, the support selector 103 may compare the coordinate value of the source and the coordinate value of the primary target. In addition, when the coordinate value of the source and the coordinate value of the primary target have different x-axis coordinate values or y-axis coordinate values with respect to the same z-axis coordinate value, the support selection unit 103 sets the primary target to the z-axis. It can be considered as not sorted and excluded.

In addition, the operator may input an input condition based on the x-axis to the support selection unit 103 . Here, the support selector 103 may compare the coordinate value of the source and the coordinate value of the primary target. In addition, when the coordinate value of the source and the coordinate value of the primary target have different y-axis coordinate values or z-axis coordinate values with respect to the same x-axis coordinate value, the support selection unit 103 sets the primary target to the x-axis It can be considered as not sorted and excluded.

In addition, the operator may input an input condition based on the y-axis to the support selection unit 103 . Here, the support selector 103 may compare the coordinate value of the source and the coordinate value of the primary target. In addition, when the coordinate value of the source and the coordinate value of the primary target have different x-axis coordinate values or z-axis coordinate values with respect to the same y-axis coordinate value, the support selection unit 103 sets the primary target to the y-axis. It can be considered as not sorted and excluded.

Subsequently, a step of processing, by the support selection unit 103, a primary target that has not been excluded (ie, a primary target that satisfies the input condition) as a secondary target may be performed.

Subsequently, the support selection unit 103 may calculate a distance between each source and each secondary target, and a step of selecting a final target from the secondary target may be performed. Here, the calculated distance between the source and the secondary target may mean a straight-line distance based on the location information of the source and the location information of the secondary target. Also, when the distance between the source and the secondary target is greater than a predetermined distance, the support selection unit 103 may exclude the secondary target. Meanwhile, when the distance between the source and the secondary target is less than or equal to a predetermined distance, the support selector 103 may process the secondary target as a final target without excluding the secondary target. In addition, the predetermined distance may be input to the support selection unit 103 by the operator and selected by the operator.

Finally, in step S103 , the support selector 103 selects a source corresponding to the final target, and selects only the support corresponding to the selected source may be performed.

Then, the selected support corresponds to the piping of the piping line, and the distance between the selected supports is calculated ( S104 ) may be performed. In step S104, the interval calculating unit 104 may correspond to the support selected in step S103 to the piping of the piping line, and may calculate a distance between the selected supports.

In addition, step S104 may be specifically performed as follows by the interval calculating unit 104 .

First, a step in which the interval calculator 104 lists the supports selected by the support selector 103 based on the three-dimensional coordinate value may be performed. Here, the selected supports may be arranged in ascending order according to a distance based on a reference point of (0, 0, 0). That is, the interval calculating unit 104 may list the selected supports in the order of the selected supports having the three-dimensional coordinate value gradually away from the coordinate value of (0, 0, 0).

Subsequently, the step of calculating the distance between the selected supports by the interval calculating unit 104 may be performed. For example, the selected and listed supports may be designated in the form of support 1, support 2, support 3, support 4, and the like, respectively. Here, the gap calculating unit 104 may calculate the distance between the support 1 and the support 2, calculate the distance between the support 2 and the support 3, and calculate the distance between the support 3 and the support 4.

Subsequently, an evaluation section is set according to the interval for which the distance is calculated, and a step (S105) of calculating the load, the maximum deformation amount, and the bending stress of the pipe corresponding to the evaluation section may be performed. In step S105, the information calculation unit 105 refers to the attribute information of the pipe and the attribute information of the support corresponding to the set evaluation section, and based on the attribute information of the pipe and the attribute information of the support, the pipe corresponding to the evaluation section. The load, maximum deformation and bending stress can be calculated.

The attribute information of the pipe referenced in step S105 may include the material of the pipe, the outer diameter of the pipe, the thickness of the pipe, the type of utility, and the like, and the attribute information of the support includes the type of support, for example, a simple support or fixed support or the like. In addition, the property information of the pipe may include physical properties of the pipe according to the material of the pipe, for example, the density of the pipe, the Young's modulus, the yield stress, the heat transfer coefficient, and the like, and the density according to the type of utility , viscosity, and the like.

In addition, step S105 may be specifically performed by the information calculating unit 105 as follows.

First, the step of calculating the load of the pipe by the information calculating unit 105 based on the distance of the evaluation section and the referenced pipe attribute information may be performed.

For example, the information calculating unit 105 may calculate the weight of the pipe and the utility weight corresponding to the evaluation section. Here, the weight of the pipe corresponding to the evaluation section is the difference between the cross-sectional area according to the outer diameter of the pipe and the cross-sectional area according to the inner diameter of the pipe (that is, the value obtained by subtracting the thickness of the pipe from the outer diameter of the pipe), the distance of the evaluation section, and the density of the pipe However, it can be calculated by multiplying the difference between the cross-sectional area according to the outer diameter of the pipe and the cross-sectional area according to the inner diameter of the pipe, the distance of the evaluation section, and the density of the pipe. In addition, the weight of the utility corresponding to the evaluation section is calculated using the cross-sectional area according to the inner diameter of the pipe, the distance of the evaluation section, and the density of the utility, but is calculated by multiplying the cross-sectional area according to the inner diameter of the pipe, the distance of the evaluation section, and the density of the utility can be

Subsequently, the weight of the pipe and the weight of the utility corresponding to the evaluation section are summed up in the information calculating unit 105 and multiplied by a safety factor, whereby a step of calculating the load of the pipe may be performed. Here, the safety factor may be generally 2.0 based on the ASME Code, and may be set by an operator.

Next, a step of calculating the maximum deformation amount and bending stress of the pipe by the information calculating unit 105 combining the load of the pipe with the distance of the evaluation section and attribute information of the referenced support may be performed. Here, due to the attribute information of the support, the evaluation section may consist of a combination of simple supports, a combination of fixed supports, and a combination of simple and fixed supports.

For example, the information calculating unit 105 may calculate the maximum amount of deformation of the pipe using the load of the pipe, the distance of the evaluation section, the modulus of elasticity according to the material of the pipe, and the secondary sectional moment of the pipe. Here, the secondary cross-sectional moment of the pipe is different depending on the shape of the pipe, and may be calculated based on the outer diameter of the pipe and the inner diameter of the pipe.

Meanwhile, the maximum deformation amount may be calculated as a different value according to attribute information of the support.

For example, when the evaluation section is a combination of simple supports, the maximum amount of deformation can be calculated using Equation (6).

식 (6)

Equation (6)

Also, when the evaluation section is a combination of a simple support and a support support, the maximum amount of deformation can be calculated using Equation (7).

식 (7)

Equation (7)

Also, when the evaluation section is a combination of support supports, the maximum amount of deformation can be calculated using Equation (8).

식 (8)

Equation (8)

In Equation (6), Equation (7), and Equation (8), w is the load of the pipe, l is the distance of the evaluation section, E is the modulus of longitudinal elasticity according to the material of the pipe, and I is the second order of the pipe is the cross-sectional moment.

Next, the step of calculating the bending stress of the pipe by the information calculating unit 105 using the load of the pipe, the distance of the evaluation section, the shape coefficient of the pipe, and the secondary sectional moment of the pipe may be performed. Here, the bending stress may be calculated as a different value according to attribute information of the support.

For example, when the evaluation section is a combination of simple supports or a combination of a simple support and a support support, the bending stress may be calculated using Equation (9).

식 (9)

Equation (9)

Also, when the evaluation interval is a combination of support supports. The bending stress can be calculated using Equation (10).

식 (10)

Equation (10)

In Equations (9) and (10), w is the load of the pipe, l is the distance of the evaluation section, c is the shape coefficient of the pipe, and I is the secondary cross-sectional moment of the pipe. In addition, the shape factor of the pipe differs depending on the shape of the pipe, for example, when the pipe has a circular cross section, it is 1/2 of the outer diameter of the pipe, and when the pipe has a square cross section, the shape factor of the pipe is the pipe 1/2 of the width of

In step S105 , the information calculating unit 105 may calculate the load of the pipe, the maximum amount of deformation of the pipe, and the bending stress of the pipe for the plurality of evaluation sections individually.

Then, based on the maximum deformation amount of the pipe and the bending stress of the pipe calculated to correspond to each evaluation section, a step (S106) of evaluating the spacing of the supports corresponding to the evaluation section may be performed. Step S106 may be performed by the evaluation unit 106 .

In addition, in step S106, the evaluation unit 106 calculates the weight of the pipe, the weight of the utility, the load of the pipe, the longitudinal modulus of elasticity of the pipe, the maximum strain, the standard strain, the bending stress, the allowable stress, etc. calculated for each evaluation section in the form of a table can be created and printed. In addition, the table may include attribute information of the pipe corresponding to the evaluation section and location information of supports. That is, the information used to evaluate the spacing of the supports through step S106 may be output in the form of a table and confirmed by the operator.

In particular, in step S106, the maximum deformation amount of the pipe and the bending stress of the pipe may be compared with reference values, respectively. Here, the reference value of the maximum amount of deformation of the pipe means the standard amount of deformation of the pipe, and the reference amount of deformation of the pipe is preferably 1/610 to 1/590, preferably 1/600 of the distance of the evaluation section. . In addition, the reference value of the bending stress of the pipe means the reference stress of the pipe, and the reference stress of the pipe is generated according to the material of the pipe, preferably 3/5 to 7/10 of the yield stress of the pipe, preferably 2 It may be a value corresponding to /3.

Meanwhile, the standard strain amount of the pipe and the standard stress of the pipe may be basically set based on the ASME Code, and in some cases may be set by the operator.

In addition, in step S106, when the maximum strain amount of the pipe calculated through step S105 is smaller than the reference strain amount of the pipe, the evaluation section can be evaluated as safe (true), whereas the maximum strain amount of the pipe calculated through step S105 When it is more than the standard deformation amount of this pipe, the evaluation section may be evaluated as false. Here, the evaluator 106 may output the result according to the evaluation for each evaluation section by including it in a table.

In addition, in step S106, when the bending stress of the pipe calculated through step S105 is smaller than the reference stress of the pipe, the evaluation section can be evaluated as safe (true), whereas the bending stress of the pipe calculated through step S105 When it is above the reference stress of this pipe, the evaluation section may be evaluated as false. Here, the evaluator 106 may output the result according to the evaluation for each evaluation section by including it in a table.

In addition, in step S106, the object of the pipe output in a three-dimensional shape corresponding to the evaluation section may be output in different colors according to the result according to the evaluation (refer to FIG. 4). For example, the pipe corresponding to the evaluation section evaluated as dangerous for any one of the maximum deformation amount and the bending stress may be output in red, and corresponding to the evaluation section evaluated as safe for both the maximum deformation amount and the bending stress. The pipe may be output in blue. For this reason, the operator can easily check the appropriateness of the spacing of the supports through the color of the pipe output in a three-dimensional shape. That is, supports corresponding to pipes output in blue may be recognized as installed at safe intervals, and supports corresponding to pipes output in red may be recognized as installed at dangerous intervals. Therefore, the operator can easily recognize and determine the appropriateness of the spacing of the supports based on the evaluation result through step S106.

The support interval evaluation method of the pipe according to the present embodiment may extract the pipe and the support for the part selected from the 3D modeling information, and select the support corresponding to the input condition for the pipe line generated based on the pipe. An interval of the supports may be set based on the supports selected according to an input condition.

In addition, a distance according to the spacing of the supports may be calculated, and an evaluation section corresponding to the spacing of the supports may be set. Here, the pipe support interval evaluation method refers to the attribute information of the pipe corresponding to the evaluation section and the attribute information of the support from the 3D modeling information, and the load of the pipe, the maximum amount of deformation of the pipe, and the bending of the pipe for each of the evaluation section stress can be calculated. The maximum deformation amount of the pipe and the bending stress of the pipe may be compared with reference values and used to generate comparative results. Based on the comparison result, the appropriateness of the spacing of the supports may be evaluated. In addition, the operator can visually check the result according to the evaluation of the appropriateness of the spacing between the supports, so that the appropriateness of the spacing between the supports can be improved by adjusting the positions of the supports.

In addition, the support interval evaluation method of the pipe according to this embodiment can check the result according to the evaluation of the adequacy of the spacing between the supports, and can prepare the construction of the supports based on the result, so that the construction cost and construction time of the supports can be made to reduce

In the above, the technical idea of the present invention has been described in detail with reference to preferred embodiments, but the technical idea of the present invention is not limited to the above embodiments, and those of ordinary skill in the art within the scope of the technical spirit of the present invention Various modifications and changes are possible by the person.

100: pipe support gap evaluation device
101: extraction unit
102 line generator
103: support selection unit
104: interval calculator
105: information calculation unit
106: evaluation unit

Claims (10)

(a) extracting the object of the pipe and support for the part selected from the three-dimensional modeling information;
(b) generating a pipe line according to the extracted pipes;
(c) selecting the extracted support for the piping line to correspond to the input condition;
(d) the selected support corresponds to the piping of the piping line, calculating the distance between the selected supports;
(e) The evaluation section is set to correspond to the calculated distance between the supports, and the attribute information of the pipe and the attribute information of the support in the evaluation section are referenced, and the load, maximum deformation and bending stress of the pipe in the evaluation section are calculated. step; and
(f) comprising the step of evaluating the spacing of supports corresponding to the evaluation section based on the calculated pipe load, maximum deformation, and bending stress,
(c) step,
(c1) designating the support extracted in step (a) as a source;
(c2) each of the pipes of the pipe line generated in (b) being designated as a primary target;
(c3) referencing the location information of the source and the location information of the primary target from the three-dimensional modeling information;
(c4) inputting an input condition, and processing a primary target that satisfies the input condition according to the coordinate value as a secondary target;
(c5) calculating the distance between the source and the secondary target, and processing the secondary target corresponding to the distance between the source and the secondary target satisfying the input condition as a final target; and
(c6) a source is selected to correspond to a final target, and a support corresponding to the selected source is selected;
The location information includes a three-dimensional coordinate value, and the input condition is any one of the x-axis, y-axis, and z-axis,
When the input condition is the z-axis, the coordinate value of the source and the coordinate value of the primary target are compared, so that the coordinate value of the source and the coordinate value of the primary target are different x-axis coordinate values or y-axis coordinate values for the same z-axis coordinate value. When it has, it is considered that the primary target is not aligned with respect to the z-axis and is excluded.
When the input condition is the x-axis, the coordinate value of the source and the coordinate value of the primary target are compared, so that the coordinate value of the source and the coordinate value of the primary target are different y-axis coordinate values or z-axis coordinate values for the same x-axis coordinate value When it has, it is considered that the primary target is not aligned with respect to the x-axis and is excluded.
The input condition is the y-axis, and the coordinate value of the source and the coordinate value of the primary target are compared, so that the coordinate value of the source and the coordinate value of the primary target are different x-axis coordinate values or z-axis coordinate values for the same y-axis coordinate value. When it has, it is considered that the primary target is not aligned with respect to the y-axis and is excluded.
A primary target that meets the input conditions is a primary target that is not excluded,
When the distance between the source and the secondary target is less than or equal to a predetermined distance, the secondary target is treated as a final target.
delete The method of claim 1, wherein step (e) comprises:
(e1) referring to the attribute information of the pipe and the attribute information of the support corresponding to the set evaluation section;
(e2) calculating the load of the pipe based on the distance of the evaluation section and the referenced pipe attribute information; and
(e3) The pipe support interval evaluation method, comprising the step of calculating the maximum deformation amount and bending stress of the pipe in combination with the distance of the evaluation section and the referenced support attribute information.
4. The method of claim 3,
The property information of the pipe includes the material of the pipe, the outer diameter of the pipe, the thickness of the pipe, the type of utility, the physical property according to the material of the pipe, and the physical property according to the type of the utility, and the physical property according to the material of the pipe includes the density of the pipe, Including Young's modulus, yield stress, and heat transfer coefficient, the physical properties according to the type of utility include density and viscosity of the utility,
The attribute information of the support includes the type of support that is a simple support or a fixed support,
(e2) step,
calculating the weight of the pipe by multiplying the cross-sectional area according to the outer diameter of the pipe and the cross-sectional area according to the inner diameter of the pipe, which is a value obtained by subtracting the thickness of the pipe from the outer diameter, the distance of the evaluation section, and the density of the pipe;
calculating the weight of the utility by multiplying the cross-sectional area according to the inner diameter of the pipe, the distance of the evaluation section, and the density of the utility; and
The weight of the pipe and the weight of the utility are summed and multiplied by a safety factor to calculate the load of the pipe.
According to claim 4, (e3) step,
calculating the maximum deformation amount of the pipe using the load of the pipe, the distance of the evaluation section, the longitudinal modulus of elasticity according to the material of the pipe, and the secondary sectional moment of the pipe; and
A support gap evaluation method comprising the step of calculating the bending stress of the pipe using the load of the pipe, the distance of the evaluation section, the shape coefficient of the pipe, and the secondary cross-sectional moment of the pipe.
4. The method of claim 3, wherein in step (f),
When the maximum deformation amount of the pipe is smaller than the standard deformation amount corresponding to 1/610 to 1/590 of the distance of the evaluation section, the evaluation section is evaluated as safe,
When the bending stress of the pipe is smaller than the reference stress corresponding to 3/5 to 7/10 of the yield stress of the pipe, the evaluation section is evaluated as safe.
delete delete delete delete

Images