KR102590167B1 - Model generation method for steel structure - Google Patents

Abstract

The present invention relates to a method of establishing a heterogeneous computerized model for specific elements of the structure by extracting required information from an existing structural computerized model using a computer program. An SP3D-based primitive model (12) including a steel structure is provided. As a basis, a Tekla-based processing model (22) is automatically established.
Through the present invention, not only can a 3D computer model specialized for steel structures be automatically generated in the design and construction of steel structures within a plant, but also a precise model that includes detailed specifications and specific connection structures can be created. As a result, production drawings and overall construction management can be performed efficiently.

Description

Method for generating computer models for manufacturing steel structures {MODEL GENERATION METHOD FOR STEEL STRUCTURE}

The present invention relates to a method of establishing a heterogeneous computerized model for specific elements of the structure by extracting required information from an existing structural computerized model using a computer program. An SP3D-based primitive model (12) including a steel structure is provided. As a basis, a Tekla-based processing model (22) is automatically established.

The steel structure, which is composed of multiple steel members connected, has relatively homogeneous material properties and excellent rigidity, so the cross-section of the main structural material can be reduced compared to concrete structures, thereby securing usable space and improving the curing process. This has various advantages, including the ability to shorten the construction period by allowing for unnecessary, rapid assembly and construction.

In particular, the cross-sectional area of steel structures can be reduced compared to other structural types under the same rigidity conditions, which not only expands the available space inside and outside the structure, but also makes it easy to place and install various piping, wiring, mechanical equipment, or other attachments. Due to its unique characteristics, it is also being adopted as a structural type for large plant structures.

In general, as with other structures, the design of steel structures proceeds through the stages of planning, construction of an analysis model, structural analysis, and creation of construction drawings and member shop drawings. However, due to the recent development of computer processing techniques, most Structural analysis is being performed through computer programs, and drafting of construction and production drawings is also being performed through computer programs. In addition, various commercial 3D structure graphic programs have been developed to display the completion status and shape of each construction stage of the planned steel structure. By implementing dimensional graphics, efficient communication and decision-making between related parties such as designers, field workers, clients, and building owners became possible.

In particular, a technology to automatically generate a 3D computer model reflecting the actual shape of a steel structure based on member-specific information in the analysis model for computerized structural analysis has been developed and is being used in practice. Related prior technologies include Patent No. 945272, etc. I can hear it.

As shown in Figure 1, the conventional steel structure computerized model generation technique, including Patent No. 945272, extracts basic information from an analysis model for performing structural analysis, that is, an analysis model simplified into nodes and line segments, to determine the structure of the actual steel structure. It is performed by generating each member element of a 3D computerized model that reflects the shape.

In other words, the prior art includes geometric data including the coordinates of the start and end points of each member in the analysis model for structural analysis, geometric stiffness, elastic modulus, and thermal expansion coefficient, such as the cross-sectional shape, cross-sectional area, and secondary moment of section of the member. By extracting feature data containing physical properties, etc., and based on this, each member element of the 3D computerized model is calculated and created in the form of a computerized object, an abstract model simplified into nodes and line segments. It can be said to be a process that converts into a visible model that reflects the real thing.

Through the conventional computerized model generation technique, significant advantages were obtained in producing various drawings and design documents required for the overall planning and construction of steel structures. However, despite this, it was difficult to prepare production drawings, calculate quantities, and manage construction of steel structures. Specialized results could not be expected, and in particular, when steel structures were applied as the structure of plant facilities, drawings required for planning and construction of steel structures as a structure among the entire plant structure, which is the main facility, and business progress of the facilities and structures were difficult to achieve. There were significant difficulties in overall information delivery.

This discrepancy in processing information between the entire facility and the steel structure in computerized design can be attributed to differences in the processing characteristics of the commercial programs that support each performance. For example, Intergraph's SP3D, which specializes in plant design, is used for the structure of the structure itself as well as the While it is useful for implementing various piping, wiring, and device elements, Trimble's Tekla, which specializes in steel structure design, is useful for configuring steel structure members, connecting each member, and creating production drawings. Ultimately, in practice, SP3D is used to create production drawings for the entire plant. After the basic design has been completed, there is no choice but to proceed with the design of the steel structure using Tekla based on this, and significant problems arise in this process.

In other words, in the division of labor in the design of each element in a plant design that combines the structure and various piping, wiring, and attachments, problems arise as computer models with different characteristics are applied, and SP3D is used for the overall design of plant facilities. A steel structure implemented as an element in a computerized model is equipped with geometric information and characteristic information of individual members at a superficial level, but detailed specification information for each member required for actual production and detailed connections that specify the connection method between each member are provided. Information or other information related to attachments and miscellaneous items is inevitably insufficient, so a large amount of complex additional work is required in creating Tekla's computerized model for the actual detailed design and member manufacturing of steel structures.

Of course, both SP3D and Tekla not only perform the common function of processing 3D computerized models of structures, but also have developed built-in functions or converter programs to convert the computerized models of both, but this is entirely dependent on the specific computerized model. It performs the function of converting elements into elements of a heterogeneous computerized model without adding or subtracting, and there is no function to create or select detailed specification information and detailed connection information for detailed design of steel structures or member production as described above. .

In summary, traditional 3D computer model generation technology, including Patent No. 945272, is a technology that derives a visible 3D computer model from a structural analysis model, as shown in Figure 1, and is significant in that it visualizes structural information from a mechanical perspective. However, there were limitations in creating actual detailed designs or production drawings. For example, the prior art, including Patent No. 945272, used analysis models from commercial structural analysis programs such as STAADPro, MIDAS or SAP2000 to use commercial structures such as Tekla, PDS or PDMS. Although the modeling program is being converted to a 3D computerized model, the converted 3D computerized model is merely a visual implementation of the above-mentioned analysis model, and cannot be said to be a process in which actual detailed design performance or production drawing creation is automatically performed. There is nothing.

Therefore, in the prior art, when creating a detailed design or production drawing for a steel structure in a plant, a 3D computerized model for plant design such as SP3D is used to complete the basic design for the entire facility, and then the steel structure structure object is created in the SP3D model. There was no choice but to create a rough steel structure drawing by extracting the drawings, reviewing the drawings by a professional engineer, and constructing a separate 3D computerized model specialized for steel structures using Tekla, etc., which was in fact a traditional paper version. It could be said that it was a process no different from drawing-based manual work.

Taking the above-mentioned problems into consideration, the present invention is a three-dimensional computerized model of a structure that promotes smooth information transfer between SP3D and Tekla, which are specialized in plant design and steel structure design, respectively, and thereby enables the creation of production drawings and efficient construction management of actual steel structures. In the method of generating a computerized model for manufacturing a steel structure, a primitive model (12), which is a SP3D-based three-dimensional computer model including a steel structure, and a database connected to the primitive model (12) are used to create a computerized model for manufacturing a steel structure. It consists of a raw database 11 containing geometric information and characteristic information of the raw object 13 that specifies the absence of, and a model creation program connected to the raw database 11, so that the model creation program is stored in the raw database 11. An object retrieval step (S10) in which geometric information and characteristic information for each primitive object (13) are retrieved, and the model creation program provides actual shape information and processing status information of the member based on the geometric information and characteristic information for each primitive object (13). An information generation step (S20) that generates detailed specification information including detailed specification information and detailed connection information that specifies the connection method between the member and other members, and the model creation program uses the detailed specification information and detailed connection information to create a Tekla-based 3 This is a method of generating a computerized model for manufacturing a steel structure, characterized in that it consists of a model processing step (S30) of generating a processing object 23, which is an object of a dimensional computerized model.

In addition, the present invention provides an object update step in which, after the model processing step (S30) is performed, the model generation program updates geometric information and characteristic information for each raw object 13 in the raw database 11 using detailed specification information. (S40) is a method of generating a computerized model for manufacturing a steel structure, characterized in that it is performed.

Through the present invention, not only can a 3D computerized model specialized for steel structures be automatically generated in the design and construction of steel structures within a plant, but also a precise model that includes detailed specifications and specific connection structures can be created. As a result, production drawings and overall construction management can be performed efficiently.

In particular, a Tekla-based 3D computerized model specialized for steel structures is created from a SP3D-based 3D computerized model specialized for overall plant facilities. Rather than simply converting between heterogeneous models, the specific shape, dimensions, physical properties and properties of each steel structure structural member are generated. Actual construction and By creating a Tekla-based 3D computer model that can be used to manufacture final members, errors can be prevented and work efficiency improved in the overall planning, design, and construction of steel structures within the plant.

In addition, by updating the database connected to the SP3D-based 3D computer model using the detailed specification information that constitutes the generated Tekla-based 3D computer model, the SP3D-based 3D computer model, which is the original model, and the processed model, the SP3D-based 3D computer model, are updated. Organic mutual correction between Tekla-based 3D computer models is possible, which not only improves the overall efficiency of design work for plants and steel structures within the plant, but also allows immediate reflection of various change factors in plans or designs. This not only allows you to create or modify design documents, but also dramatically reduces the amount of work required to reflect change elements.

Figure 1 is an explanatory diagram of the prior art
Figure 2 is a functional diagram of the present invention
Figure 3 is a flow chart of the present invention
Figure 4 is an example of a processed object of the present invention
Figure 5 is a diagram illustrating the processing method of the present invention
Figure 6 is an example production drawing created through the present invention.
7 is a flow chart of a modified embodiment of the present invention.
Figure 8 is a diagram illustrating the processing method of the embodiment of Figure 7

The present invention is a method of generating a computerized model for manufacturing a steel structure. Before explaining the detailed sequential configuration that constitutes the present invention, the basic function of the present invention is explained in contrast to the prior art. The prior art is as shown in FIG. 1. While the three-dimensional computer model as shown on the right side of FIG. 1, that is, the model corresponding to the primitive model 12 of the present invention, is implemented based on the analytical model for structural analysis as shown on the left, the present invention is It can be said that a Tekla-based 3D computer model specialized for steel structures is created using the primitive model (12), which is a 3D computer model as shown on the left of Figure 2.

In order to perform the present invention, the geometry of the primitive model 12, which is a SP3D-based three-dimensional computer model including a steel structure, and the primitive object 13 that specifies the members of the steel structure as a database connected to the primitive model 12 It is necessary to construct a raw database 11 containing information and characteristic information, and a model creation program connected to the raw database 11, and the subject who actually leads the performance process of the present invention is installed as an application program on the computer. As a model creation program, the connection between the above-mentioned model creation program and the raw database 11 is carried out when the model creation program and the raw database 11 are mounted on the same computer, or the raw database 11 is stored on a computer equipped with the model creation program. It encompasses a method of obtaining required information by connecting the raw database 11, which is entered through a storage medium or built on a remote information device such as a separate server or storage, and the model creation program of the present invention through a communication network. .

As shown in FIG. 3, the present invention begins with an object retrieval step (S10) in which the model creation program retrieves geometric information and characteristic information for each raw object 13 from the raw database 11.

As shown in Figure 4, the model creation program, which is a computational tool for performing the present invention, is connected to the raw database 11 directly connected to the SP3D-based raw model 12 and recorded in the raw database 11, as described above. The geometric information and characteristic information for each primitive object 13 are read, where the primitive objects 13 constituting the primitive model 12 are individual elements of the steel structure, as illustrated in FIG. 4. It is a computerized object corresponding to a member and is specified by geometric information including basic shape, spatial location, and connection type with adjacent members, and characteristic information including basic physical properties and surface pretreatment status such as flame resistance.

In other words, each raw object 13 constituting the SP3D-based raw model 12 used in the present invention is specified by geometric information and characteristic information contained in the raw database 11, and each raw object 13 Geometric information and characteristic information are managed through raw identification information, which is the unique unique information in the raw model 12. Therefore, in the raw database 11, raw identification information, geometric information, and specific information are systematically constructed in ordered pairs, The individual primitive object 13 corresponds to the primitive identification information on a one-to-one basis.

After the object retrieval step (S10) is performed, as shown in FIG. 3, the model creation program generates detailed information including the actual shape information and processing status information of the corresponding member based on the geometric information and characteristic information for each raw object 13. An information generation step (S20) is performed to generate specification information and detailed connection information that specifies the connection method between the member and other members.

When performing the information generation step (S20), in generating the actual shape information for each member based on the geometric information and characteristic information of the above-described primitive object 13, the model creation program uses the geometric information of the primitive object 13 as much as possible. The actual cross-sectional shape of the member is selected by reflecting it. A specific selection method is to list and output the applicable cross-sectional shapes on the screen of a computer equipped with a model creation program, and then have the user select the listed cross-sectional shape. there is.

In addition, when performing the information generation step (S20), when generating detailed connection information that specifies the connection method between the member and other members, the model creation program lists and outputs the applicable connection formats on the screen, and the user selects the listed format. A selection method is possible, and the output state of the processed object 23, which will be described later, to which the connection format between members is applied is illustrated in FIG. 4.

In Figure 4, three types of connection types between members are illustrated, with riveted connections, welded connections, and bolted connections shown from left to right in the drawing, respectively; in reality, more diverse types may be presented.

In this way, after the information generation step (S20) is performed, the model creation program uses detailed specification information and detailed connection information to create a processed object (23), which is an object of a Tekla-based 3D computer model (S30). By performing this, as shown in FIG. 5, the processing model 22, which is a Tekla-based three-dimensional computerized model, is composed of a number of processing objects 23 and has a shape and structure closer to the actual structure than the primitive model 12. can be created.

In performing the model processing step (S30), the model creation program combines the generated processing objects 23 and determines whether there is interference between the processing objects 23 by utilizing detailed specification information and detailed connection information that specify the processing objects 23. is identified, and if interference occurs, interference is avoided by modifying the detailed specification information and detailed connection information of the related processing object 23.

In avoiding interference in this model processing step (S30), the model creation program is used to transfer the interference-generating processing object 23 to a computer equipped with the model generation program prior to modifying the detailed specification information and detailed connection information of the processing object 23. The user's attention can be drawn by outputting it on the screen, and when modifying the processed object 23 thereafter, the applicable detailed specification information or detailed connection information is presented and the modification is applied according to the user's selection. desirable.

In particular, in the present invention, due to the creation of detailed connection information, a new object that did not exist in the primitive model 12 can be created as the processing object 23, and there is a possibility that interference may occur due to this, so the model processing step ( In S30), processing such as emphasizing the processed object 23 at the connection part between each member or outputting it in a different color may be performed when outputting the computer screen.

Through this object retrieval step (S10) or model processing step (S30), a Tekla-based processed object (23) that is close to the actual steel structure can be created based on the primitive object (13) that constitutes the primitive model (12) of SP3D. Although the processed object (23) was created as a parent object of the primitive object (13), a correspondence relationship is created between the entire processed object (23) and the primitive object (13), or the primitive object (13) and the processed object (23) are equal in number. It does not form the same number.

That is, as described above, the processed object 23 created through the present invention is not only the main member of the steel structure represented by the primitive object 13, but also an additional connection between each member that is not implemented by the primitive object 13. As it encompasses members, attachment parts, and other miscellaneous items, the processed object 23 exceeds the primitive object 13 not only in the amount of information constituting the computerized model but also in the total number of individual objects.

Therefore, the above-mentioned raw identification information that specifies the raw object 13 cannot be used without any change as information for identifying the individual processed object 23 with respect to the entire processed object 23, and the processed object 23 The processed identification information that specifies needs to be structured in a different format from the raw identification information.

However, since the SP3D primitive object 13 and the Tekla processing object 23 of the present invention both correspond to members of the same steel structure, the processing object 23 that can directly correspond to the primitive object 13 For example, C (Main Column), SC (Sub Column), Post (P, Post), Girder (G), Beam (B), Main Truss (MT) , In the case of major structural members such as Sub Truss (ST), Horizontal Brace (HB), or Vertical Brace (VB), the raw identification information of the raw object (13) and the processed object (23) There is a need to manage processed identification information in the same or similar system.

That is, in the case of the processed object 23 that can directly correspond to the raw object 13, the raw identification information of the raw object 13 is used as the processed identification information of the processed object 23, or the raw object 13 is used as the raw identification information of the raw object 13. ) By expanding the raw identification information, for example, by adding a string to the front or back of the string that constitutes the raw identification information to form processed identification information, consistency in the system of the raw identification information and processed identification information can be maintained. .

In particular, this correspondence relationship between raw identification information and processed identification information can be usefully utilized when updating the raw database 11 in the object update step (S40), which will be described later.

In this way, by creating a Tekla-based processing object (23) specialized for steel structures through the object retrieval step (S10) to the model processing step (S30) of the present invention, it can be usefully utilized in the overall detailed design and construction of steel structures. For example, it is possible to automatically generate shop drawings as shown in FIG. 6, which can dramatically reduce the workload related to design and construction of steel structures.

Meanwhile, in the present invention, as shown in FIG. 7, after the model processing step (S30) is performed, the model creation program uses detailed specification information for geometric information and characteristic information for each raw object 13 in the raw database 11. By performing the updating object update step (S40), the primitive model 12 of SP3D can be specified to be close to the actual structure as shown in FIG. 8, and thus the manufacturing, transportation and materials of steel members performed based on SP3D Work efficiency in overall management can be improved.

That is, as described above, the present invention extracts information related to steel structures from the primitive model 12 for plant facilities built based on SP3D and establishes a Tekla processing model 22 specialized for steel structures. As such, it can be said to be a computerized processing of steel structures within a plant project rather than a single steel structure project. Therefore, the overall manufacturing, transportation, and material management of steel members needs to be carried out from the perspective of design and construction of the entire plant facility. For this purpose, By reflecting the above-described processing model (22) information as much as possible in SP3D's primitive model (12), the efficiency of the steel structure construction work performed as part of the plant construction project is secured.

In particular, when updating the raw database 11 in performing the object update step (S40), the raw identification information for each individual raw object 13 contained in the raw database 11 and the processed identification information for each processed object 23 are compared. In this way, the geometric information and characteristic information of the raw object 13 are updated, and as described above, by maintaining systematic consistency between the raw identification information and the processed identification information, rapid and accurate processing is possible.

11: Raw database
12: Primitive model
13: Primitive object
22: Processing model
23: Processed object
S10: Object retrieval step
S20: Information creation stage
S30: Model processing stage
S40: Object update step

Claims (2)

In the method of generating a computerized model for manufacturing steel structures,
It contains the primitive model (12), which is a SP3D-based 3D computerized model that includes a steel structure, and the geometric information and characteristic information of the primitive object (13) that specifies the members of the steel structure as a database connected to the primitive model (12). It consists of a raw database (11) and a model creation program connected to the raw database (11),
an object retrieval step (S10) in which a model creation program mounted on a computer retrieves geometric information and characteristic information for each raw object (13) from the raw database (11);
The model creation program mounted on the computer generates detailed specification information including the actual shape information and surface pre-processing status information of the member based on the geometric information and characteristic information for each primitive object (13), and the connection method between the member and other members. An information generation step (S20) of generating specific detailed connection information;
A steel structure structure characterized in that it consists of a model processing step (S30) in which a model creation program mounted on a computer generates a processing object (23), which is an object of a Tekla-based three-dimensional computerized model, using detailed specification information and detailed connection information. Methods for creating computational models for manufacturing.
In claim 1,
After the model processing step (S30) is performed,
Generating a computerized model for manufacturing a steel structure, characterized in that an object update step (S40) is performed in which the model generation program updates the geometric information and characteristic information for each raw object 13 in the raw database 11 using detailed specification information. method.

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