A Parametric Modeling Method for Articulated Column Bases Based on 3DExperience

Abstract

The present invention discloses a parametric modeling method for hinged column bases based on 3D Experience. The method comprises the following steps: 1) Based on a straight line as the input condition of the column base template, the hinged column base is disassembled into components with reference to the actual column base structure form; 2) Based on the input conditions and input parameters, the overall coordinate system, local coordinate system and component coordinate system of the column base model are established; 3) The corresponding component sketches are drawn on the component coordinate system, and the component dimensions, positioning and quantity are defined by inputting dimension parameters and rectangular array parameters; 4) The component sketches are instantiated according to certain rules. The present invention realizes the full coverage of a type of hinged column base by a single template, which can greatly improve the design efficiency of the hinged column base model, and the form of anchor bolts and the direction of the bent section of the anchor rod in the column base model can also be freely changed, the model details are full, and the matching degree with the actual column base is high.

Description

Technical Field

[0001] The present invention relates to the technical field of parametric BIM model modeling, and particularly relates to a parametric modeling method for hinged column bases based on 3DExperience. Background Art

[0002] Building Information Model (BIM) refers to the use of digital technology to establish a unique virtual three-dimensional model of a building project. The model provides a building project information database consistent with the actual situation, serving the design, construction, operation and maintenance, and management of engineering projects. The establishment of a component standard library is the key to promoting the implementation of BIM standards, and the construction of complex composite components can be based on parametric modeling technology.

[0003] The parametric modeling technology built into 3DExperience can be applied to the construction field. Based on its powerful graphic-assisted compilation function, structural engineers can achieve parametric-driven modeling and adjustment of complex structures. As a typical complex composite component in steel structures, hinged column bases have the characteristics of various types and complex structures.

[0004] At present, the commonly used BIM steel structure model component library does not include a hinged column base model; and the existing column base models have low fineness, and the anchor bolts in the models only include welded plate anchor bolts; at the same time, the existing column base models also have poor versatility, with high time costs for changing models and cumbersome operations. In summary, the existing models can neither accurately reflect the actual component form nor facilitate the modeling and adjustment of structural engineers. Summary of the Invention

[0005] The purpose of the present invention is to provide a parametric modeling method for hinged column bases based on 3DExperience to solve the parametric modeling problem of hinged column bases.

[0006] To achieve the above purpose, the technical solution of the present invention is as follows:

[0007] A parametric modeling method for hinged column bases based on 3DExperience, the method comprising the following steps:

[0008] 1) Based on a straight line as the input condition of the column base template, disassemble the hinged column base into components with reference to the actual column base structure form, and its steps include:

[0009] 11) Determine the lowest point and the highest point in the Z direction of the input straight line, and calibrate the positive Z direction and the negative Z direction;

[0010] 12) Refer to the spatial relationships of various components in the actual column base, and disassemble the components of the hinged column base; the components of the hinged column base include the column base plate, gasket, nut, stiffening plate, and anchor bolt; among them, the column base plate includes the base plate and the openings on the base plate.

[0011] 2) Based on the input conditions and input parameters, establish the global coordinate system, local coordinate system, and component coordinate system of the column base. The steps include:

[0012] 21) Define the reference plane according to the input line and the lowest point obtained by judgment, and define the two mutually perpendicular lines on this plane as the X direction and Y direction of the global coordinate system respectively. The global coordinate system is uniquely positioned in space and only related to the input conditions, and does not change with the drive of the input parameters.

[0013] 22) The establishment of the local coordinate system is based on the global coordinate system. The local coordinate system can move freely in the four directions of X, Y, Z, and RZ. The positioning of the local coordinate system in the global coordinate system changes with the drive of the input parameters.

[0014] 23) The establishment of the component coordinate system is based on the local coordinate system. According to the positioning relationships among the components in the column base, the positioning relationship between the component coordinate system and the local coordinate system is restricted by inputting positioning parameters.

[0015] 3) Draw the corresponding component sketches on the component coordinate system, and define the component dimensions, positioning, and quantity by inputting dimension parameters and rectangular array parameters. The steps include:

[0016] 31) Drive the change of the anchor bolt form by inputting the bending radius and bending angle to accurately describe the L-shaped anchor bolt and J-shaped anchor bolt.

[0017] 32) Refer to the spatial position relationships of various components in the actual column base, uniformly set the positioning and quantity characteristics of the anchor bolt assembly along the long side and wide side directions of the column base, and separately set the positioning and quantity characteristics of the stiffening plate; among them, the anchor bolt assembly includes the gasket, nut, anchor bolt, and the openings on the base plate.

[0018] 33) On the premise of considering the symmetry of component distribution and the parity of the number of components, control the positioning and quantity characteristics of the arrayed component sketches in the long side and wide side directions of the column base based on the rectangular array parameters.

[0019] 4) Instantiate the component sketches according to certain rules. The steps include:

[0020] 41) Instantiate the anchor bolt assembly and the stiffening plate at the four corners of the hinged column base to ensure the basic shape characteristics of the hinged column base.

[0021] 42) When the number of anchor bolts or stiffening plates on the long side or the wide side is 4, then instantiate the sketch of the combined mother anchor bolt on that side or the sketch of the mother stiffening plate; when the number of anchor bolts or stiffening plates on the long side or the wide side is 6, 8, 10... then instantiate the sketch of the array member.

[0022] 43) When the number of combined anchor bolt assemblies or stiffening plates on the long side or the wide side is odd, then it is also necessary to instantiate the sketch of the middle combined anchor bolt assembly on that side or the sketch of the middle stiffening plate.

[0023] 44) Rule 43) should be used in conjunction with Rule 42) to achieve full coverage of the quantity and positioning of all possible combined anchor bolt assemblies and stiffening plates on the column base edge.

[0024] Furthermore, based on the EKL language, the lowest point and the highest point in the Z direction of the input line are judged.

[0025] Furthermore, the origin of the overall coordinate system is based on the lowest point in the Z direction of the input line, and the reference plane is perpendicular to the input line.

[0026] Furthermore, the coordinate system of the anchor bolt member rotates freely along the RZ direction to control the change in the direction of the bent section of the anchor rod.

[0027] Furthermore, the component sketch includes four-corner sketches, middle sketches, mother sketches, and array sketches. Figure 4 categories.

[0028] Furthermore, the combined anchor bolt assemblies and stiffening plates at the four corners must be instantiated to ensure the basic shape characteristics of the hinged column base.

[0029] Furthermore, the positioning and quantity characteristics of the combined anchor bolt assemblies and stiffening plates along the long side and the wide side of the column base should be considered separately.

[0030] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0031] The present invention provides a parametric modeling method for a hinged column base based on 3DExperience. This method is based on an input line and several input parameters, and combined with rules, it can quickly and accurately generate a steel structure hinged column base model through program operations; and the model has strong versatility. By simply adjusting the parameters, it can achieve full coverage of a type of steel structure hinged column base, greatly improving the efficiency of structural engineers in modeling and adjusting the hinged column base; the model has good visualization effects, rich details, and a high degree of matching with the actual column base. The form of the anchor bolts in the model can be changed and the direction of the bent section of the anchor rod can also be freely changed, expanding the types of anchor bolts in the existing model. The present invention provides a brand-new and effective idea and method for subsequent designers to build column base templates. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the flowchart of the method according to the embodiment of the present invention;

[0033] Figure 2 is the positioning diagram of the input straight line and the highest and lowest points according to the embodiment of the present invention;

[0034] Figure 3 is the model diagram of the hinged column base according to the embodiment of the present invention;

[0035] Figure 4 is the detailed dimension diagram of the model components according to the embodiment of the present invention;

[0036] Figure 5 is the positioning diagram of the overall coordinate system and the local coordinate system according to the embodiment of the present invention;

[0037] Figure 6 is the pointing diagram of the bent section of the anchor bolt according to the embodiment of the present invention;

[0038] Figure 7 is the L-shaped and J-shaped anchor bolt diagram according to the embodiment of the present invention;

[0039] Figure 8 is the combined body diagram of the J-shaped anchor bolt according to the embodiment of the present invention;

[0040] Figure 9 is the gasket sketch according to the embodiment of the present invention; wherein: (a) is the sketch of the four-corner gasket, (b) is the sketch of the middle gasket, (c) is the sketch of the female gasket, (d) is the sketch of the array gasket;

[0041] Figure 10 is the gasket sketch of the embodiment according to the embodiment of the present invention;

[0042] Figure 11 is the anchor bolt sketch according to the embodiment of the present invention; wherein: (a) is the sketch of the four-corner anchor bolt, (b) is the sketch of the middle anchor bolt, (c) is the sketch of the female anchor bolt, (d) is the sketch of the array anchor bolt;

[0043] Figure 12 is the anchor bolt sketch of the embodiment according to the embodiment of the present invention;

[0044] Figure 13 is the stiffening plate sketch according to the embodiment of the present invention; wherein: (a) is the sketch of the four-corner stiffening plate, (b) is the sketch of the middle stiffening plate, (c) is the sketch of the female stiffening plate, (d) is the sketch of the array stiffening plate;

[0045] Figure 14 is the stiffening plate sketch of the embodiment according to the embodiment of the present invention;

[0046] Figure 15 is the basic form diagram of the hinged column base according to the embodiment of the present invention;

[0047] Figure 16 This is the variant drawing of the articulated column base formwork of the present invention.

[0048] In the figure: 101 - column base plate, 102 - gasket, 103 - nut, 104 - stiffening plate, 105 - anchor bolt Specific embodiments

[0049] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] The present invention discloses a method for realizing parametric modeling of a steel structure articulated column base based on 3DExperience. The method includes the following steps: 1) Based on a straight line as the input condition of the column base formwork, the components of the articulated column base are split with reference to the actual column base composition; 2) Based on the input conditions and input parameters, the overall coordinate system, local coordinate system and component coordinate system of the column base model are established; 3) The corresponding component sketches are drawn on the component coordinate system, and the component dimensions, positioning and quantity are defined by inputting dimension parameters and rectangular array parameters; 4) The component sketches are instantiated according to certain rules. The present invention realizes the full coverage of a class of articulated column bases based on a single formwork, which can greatly improve the design efficiency of the articulated column base model, and the form of the anchor bolt in the column base model and the pointing direction of the bent section of the anchor rod can also be freely changed, the model details are full, and the matching degree with the actual column base is high.

[0051] As Figure 1 shown, this embodiment adopts the parametric modeling method of the articulated column base of 3DExperience, based on the CATIA module in the 3DExperience platform released by DASSAULT Company, and the flow chart is as Figure 1 shown, and the detailed steps are as follows:

[0052] 1) Based on a straight line as the input condition of the column base formwork, the components are split with reference to the actual column base composition, and the steps include:

[0053] 11) As Figure 2 shown, the lowest point and the highest point in the Z direction of the input straight line are judged according to the EKL language, and the positive and negative directions of Z are calibrated;

[0054] 12) In the embodiment of the present invention, as Figure 3As shown in the figure, according to the spatial relationship of each component in the actual column base, the hinged column base is disassembled into several components such as the column base plate 101, gasket 102, nut 103, stiffening plate 104, anchor bolt 105, etc. Among them, the column base plate includes the base plate and the openings on the base plate; the specific dimensions of the components can be referred to Figure 4 , it should be noted that Figure 4 the scales of each component in Figure 4 are not the same, and the dimensional parameters in

[0055] can all be adjusted by changing the input parameters.

[0056] 2) Based on the input conditions and input parameters, establish the global coordinate system, local coordinate system, and component coordinate system of the column base model. The steps include: Figure 5 As shown in the figure, define the reference plane according to the input straight line and the lowest point obtained by judgment, and define the two mutually perpendicular straight lines on this plane as the X direction and Y direction of the global coordinate system respectively. The global coordinate system is uniquely positioned in space and only related to the input conditions, and does not change with the drive of the input parameters;

[0057] 22) As shown in Figure 5 the figure, the establishment of the local coordinate system is based on the global coordinate system. The local coordinate system can move freely along the four directions of X, Y, Z, and RZ. The positioning of the local coordinate system in the global coordinate system changes with the drive of the input parameters, and parameter drive can facilitate fine-tuning of the column base positioning in the subsequent modeling process. In this embodiment, the local coordinate system first translates 50 mm in the negative Z direction, then rotates 45 ° clockwise around the Z axis, and then moves 50 mm along the newly obtained X direction and Y direction respectively;

[0058] 23) The establishment of the component coordinate system is based on the local coordinate system. According to the positioning relationship between the components in the column base, the positioning relationship between the component coordinate system and the local coordinate system is constrained by inputting positioning parameters. The bent section of the anchor bolt of the anchor bolt is driven to rotate around the center line of the vertical section of the anchor by inputting parameters. The specific form is as shown in Figure 6 the figure.

[0059] 3) Draw the corresponding component sketches on the component coordinate system, and define the component dimensions, positioning, and quantity by inputting dimensional parameters and rectangular array parameters. The steps include:

[0060] 31) As shown in Figure 7 the figure, drive the form of the anchor bolt to change by inputting the bending radius and bending angle, so that the model can accurately describe the L-shaped anchor bolt and J-shaped anchor bolt. In this embodiment, the anchor bolt is L-shaped, the bending radius is 50 mm, and the bending angle is 90 ° ;

[0061] 32) With reference to the actual spatial positioning relationship of the various components of the column base, the positioning and quantity characteristics of the anchor bolt assembly (washer, nut, anchor bolt, bottom plate opening) along the long side and wide side of the column base can be uniformly considered. Figure 8 As shown, the positioning and quantity characteristics of the stiffening plates should be considered separately. In this embodiment, there are 5 anchor bolt assemblies in the long side direction and 4 in the short side direction; there are 4 stiffening plates in the long side direction and 3 in the short side direction. The specific positioning of each component is as follows Figure 3 As shown;

[0062] 33) Sketches of three typical components: gaskets, anchor bolts, and stiffeners. Figure 9 , Figure 11 , Figure 13 As shown, the component sketch includes four corner sketches, middle sketches, mother sketches, array sketches Figure 4 When drawing the sketch, the symmetry of the component distribution and the parity of the number of components should be fully considered; the positioning and quantity characteristics of the array component sketch in the long and wide directions of the column foot are controlled based on the rectangular array parameters. Under the premise of determining the rectangular array parameters, four types of component sketches will be automatically generated. The final instantiated sketch is a subset of the sketch set. In this embodiment, the sketches of each component are respectively as follows Figure 10 , Figure 12 , Figure 14 shown.

[0063] 4) Instantiate the component sketch according to certain rules. The steps include:

[0064] 41) Instantiate the four anchor bolt assemblies and eight stiffening plates at the four corners of the hinged column foot, and you can get Figure 15 The basic form of the hinged column foot of the steel structure shown;

[0065] 42) In this embodiment, the sketches of the long side and short side female anchor bolt assembly and the long side female stiffener sketch need to be instantiated. The sketch of the short side female stiffener sketch does not need to be instantiated. Figure 10 , Figure 12 , Figure 14 As shown;

[0066] 43) In this embodiment, the number of long-side anchor bolt assemblies and short-side stiffening plates is odd, so the instantiation commands of the long-side middle anchor bolt assembly sketch and the short-side middle stiffening plate sketch need to be activated.

[0067] In summary, the present invention provides a parametric modeling method for hinged column bases based on 3DExperience. Based on input parameters and rules, the hinged column base model of steel structures can be generated quickly and accurately. The model is highly versatile. In addition to the embodiments mentioned above, various hinged column base template variants can be obtained by simply adjusting parameters. Column base template variants such as Figure 16As shown; the template can achieve full coverage of a type of steel structure hinged column base.

[0068] Those skilled in the art can easily understand that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A parametric modeling method for articulated column bases based on 3DExperience, characterized in that, The method includes the following steps: 1) Based on a straight line as the input condition of the column base template and referring to the actual column base structure form, disassemble the components of the hinged column base. The steps include: 11) Determine the lowest point and the highest point in the Z direction of the input straight line, and calibrate the positive Z direction and the negative Z direction; 12) Refer to the spatial relationship of each component in the actual column base to disassemble the components of the hinged column base; the components of the hinged column base include the column base plate, gasket, nut, stiffening plate, and anchor bolt; among them, the column base plate includes the base plate and the base plate opening; 2) Based on the input conditions and input parameters, establish the global coordinate system, local coordinate system, and component coordinate system of the column base model. The steps include: 21) Define the reference plane according to the input straight line and the determined lowest point, and define the two mutually perpendicular straight lines on this plane as the X direction and the Y direction of the global coordinate system respectively. The global coordinate system is uniquely positioned in space and is only related to the input conditions, and does not change with the drive of the input parameters; 22) The establishment of the local coordinate system is based on the global coordinate system. The local coordinate system can move freely in the four directions of X, Y, Z, and RZ. The positioning of the local coordinate system in the global coordinate system changes with the drive of the input parameters; 23) The establishment of the component coordinate system is based on the local coordinate system. According to the positioning relationship between the components in the column base, input positioning parameters to constrain the positioning relationship between the component coordinate system and the local coordinate system; 3) Draw the corresponding component sketches on the component coordinate system, and define the component dimensions, positioning, and quantity by inputting dimension parameters and rectangular array parameters. The steps include: 31) Drive the change of the anchor bolt form by inputting the bending radius and bending angle to accurately describe the L-shaped anchor bolt and the J-shaped anchor bolt; 32) Refer to the spatial position relationship of each component in the actual column base, uniformly set the positioning and quantity characteristics of the anchor bolt assembly along the long side and the wide side of the column base, and separately set the positioning and quantity characteristics of the stiffening plate; among them, the anchor bolt assembly includes the gasket, nut, anchor bolt, and base plate opening; 33) On the premise of considering the symmetry of component distribution and the parity of the number of components, control the positioning and quantity characteristics of the arrayed component sketches in the long side and wide side directions of the column base based on the rectangular array parameters; 4) Instantiate the component sketches according to certain rules. The steps include: 41) Instantiate the anchor bolt assembly and the stiffening plate at the four corners of the hinged column base to ensure the basic shape characteristics of the hinged column base; 42) When the number of anchor bolts or stiffening plates on the long side or the wide side is 4, then instantiate the sketch of the mother anchor bolt assembly or the mother stiffening plate on that side; when the number of anchor bolts or stiffening plates on the long side or the wide side is an even number greater than or equal to 6, then the arrayed component sketches also need to be instantiated; 43) When the number of anchor bolt assemblies or stiffening plates on the long side or the wide side is odd, then instantiate the sketch of the middle anchor bolt assembly or the middle stiffening plate on that side; 44) Rule 43) should be used in conjunction with Rule 42) to achieve full coverage of the quantity and positioning of all possible anchor bolt assemblies and stiffening plates on the column base side.

2. The parametric modeling method of the articulated column base based on 3DExperience according to claim 1, characterized in that, The lowest and highest points in the Z direction of the input straight line are obtained based on the EKL language judgment.

3. The parametric modeling method of the articulated column base based on 3DExperience according to claim 1, characterized in that, The origin of the overall coordinate system is based on the lowest point in the Z direction of the input straight line, and the reference plane is perpendicular to the input straight line.

4. The parametric modeling method of the articulated column base based on 3DExperience according to claim 1, characterized in that, The coordinate system of the anchor bolt component rotates freely along the RZ direction to control the change in the direction pointed by the bent section of the anchor rod.

5. The parametric modeling method of the articulated column base based on 3DExperience according to claim 1, characterized in that, The component sketches include four types: corner sketches, intermediate sketches, mother sketches, and array sketches.

6. The parametric modeling method of the hinged column base based on 3DExperience according to claim 1, wherein The positioning and quantity characteristics of the anchor bolt assembly and the stiffening plate along the long and wide sides of the column base should be considered separately.

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