CN107808034B - Steel bar rapid modeling method based on sketchup dynamic component - Google Patents
Steel bar rapid modeling method based on sketchup dynamic component Download PDFInfo
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- CN107808034B CN107808034B CN201710927811.XA CN201710927811A CN107808034B CN 107808034 B CN107808034 B CN 107808034B CN 201710927811 A CN201710927811 A CN 201710927811A CN 107808034 B CN107808034 B CN 107808034B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
Abstract
The invention discloses a steel bar rapid modeling method based on a sketchup dynamic assembly, wherein steel bars of the same type can be repeatedly utilized only by setting steel bar parameters after a model is established according to the method, the method is simple, the modeling speed is high, various set parameters are extracted, the effect is good, and the practicability is high.
Description
Technical Field
The invention belongs to the field of buildings, and particularly relates to a steel bar rapid modeling method based on a sketchup dynamic component.
Background
sketchup is a design aid, mainly used for three-dimensional modeling. The three-dimensional modeling method has the advantages of small software volume, flexible and simple operation, and extremely fast and convenient establishment, observation and modification of the three-dimensional model, and becomes application software of three-dimensional modeling in various industries. Sketchup has a large number of inserts for use, but the number of inserts in the aspect of reinforced concrete structures is small, and particularly under the condition that a large number of reinforced bar models need to be built, the workload is large, but fortunately, the Sketchup provides a dynamic component function, a standard reinforced bar model is built, and a reinforced bar solid model is built in a parameterization mode by setting component attributes.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method realizes the parameterized rapid establishment of a steel bar solid model by establishing a reference steel bar component and setting the properties of the steel bar component.
In order to solve the technical problems, the inventor obtains the technical scheme of the invention through practice and summary, and the invention discloses a steel bar rapid modeling method based on a sketchup dynamic component, which comprises the following steps:
the method comprises the following steps: the whole steel bar model is defined as an assembly which is divided into three parts: the straight section, the bending section and the hook straight section are respectively defined as a group;
step two, setting the attribute of the steel bar component: the diameter of the steel bar, the length of the steel bar, the bending radius, the angle of the hook and the length of the straight section of the hook;
step three, setting the three group attributes of the step one: a straight section coordinate and a straight section length; the coordinates of the bending section and the size of the bending section; coordinates of a straight section of the hook and the size of the straight section of the hook;
and fourthly, copying the steel bar components, completely exploding the copied steel bar components, selecting the whole steel bar line segment, and generating a steel bar solid model by using the sketchup line rotary cylinder plug-in.
Preferably, the three parts of the bar assembly in the first step are the basic form of a bar with end hooks, on which the bar with end hooks or other forms of bent bars are expanded. In the first step, three groups are added, so as to define the groups, reference points can be added at the nodes of each group, and the groups are generated by selecting line segments of each part and corresponding reference points.
Preferably, in the second step, the properties of the steel bar assembly, such as the diameter of the steel bar, the length of the steel bar, the bending radius, the angle of the hook and the length of the straight section of the hook, are basic parameters for forming the steel bar with the hook at the tail end, and other parameters are added according to needs. The straight section of flat and hook is all tangent with crooked section, the bar diameter is the nominal diameter of reinforcing bar, reinforcing bar length is equal to the length of the straight section of reinforcing bar + the interior limit radius of crooked section, reinforcing bar crooked section radius is equal to the interior limit radius of reinforcing bar.
Preferably, the coordinates of the straight section in the third step and the length of the straight section; the coordinates of the bending section and the size of the bending section; the coordinates of the straight section of the hook and the size of the straight section of the hook refer to the definitions in a plane coordinate system of the component attributes in the sketchup, the coordinates of the straight section are the coordinates of the starting point of the straight section and are set as the coordinates (0,0) of the origin of the steel bar component; the coordinates of the bending section are arranged at the tangent points of the straight section, the x-axis coordinate of the tangent point plane is equal to the length of the straight section, and the y-axis coordinate is equal to 0; the bending section size LenX is bending radius + steel bar diameter/2, and LenY is bending radius + steel bar diameter/2 + sin (180-bending angle) x (bending radius + steel bar diameter/2); the coordinates of the straight section of the hook are arranged at the tangent point of the bent section, the x-axis coordinate of the tangent point plane is equal to the length of the straight section + cos (180-bending angle) x (bending radius + diameter of the steel bar/2), and the y-axis coordinate is equal to the LenY value of the bent section; the dimension LenX of the straight hook section is cos (180-bending angle) multiplied by the length of the straight hook section, and LenY is sin (180-bending angle) multiplied by the length of the straight hook section.
Preferably, the rebar assemblies in the fourth step are copied into a newly-built sketchup file so as to establish a rebar model library with different specification styles. The steel bar solid model is generated by using a sketchup line-to-column plug-in, and is also generated by using a path following function carried by the sketchup.
Compared with the prior art, the invention has the technical effects that: the same type of reinforcing steel bars can be recycled only by setting reinforcing steel bar parameters after the model is built according to the method, the method is simple, the modeling speed is high, the set various parameters are extracted, the effect is good, and the practicability is high.
Drawings
In order to more clearly illustrate the embodiments or prior art solutions of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic plan view of a center line of a reinforcing bar;
fig. 2 is a schematic plan view of a rebar model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The application of the principles of the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, a method for rapidly modeling a steel bar based on a sketchup dynamic component includes the following steps:
the method comprises the following steps:
the method comprises the following steps: the whole steel bar model is defined as an assembly which is divided into three parts: the three parts are respectively defined as a group;
step two, setting the attribute of the steel bar component: the diameter of the steel bar, the length of the steel bar, the bending radius, the angle of the hook and the length of the straight section of the hook;
step three, setting the three group attributes of the step one: the coordinates of the straight section 1 and the length of the straight section 1; the coordinates of the bending section 2 and the size of the bending section 2; coordinates of the hook straight section 3 and the size of the hook straight section 3;
and fourthly, copying the steel bar components, completely exploding the copied steel bar components, selecting the whole steel bar line segment, and generating a steel bar solid model by using the sketchup line rotary cylinder plug-in.
In the first step, the three parts of the reinforcing bar assembly are the basic form of a reinforcing bar with end hooks, and the reinforcing bar with two end hooks or other forms of bent reinforcing bars are expanded on the basis. In the first step, for defining groups, reference points may be added to the nodes 4, 5, 6, 7, 8 of each group, and the group is generated by selecting line segments of each part and corresponding reference points.
In this embodiment, the properties of the reinforcement assembly in the second step, such as the diameter of the reinforcement, the length of the reinforcement, the bending radius, the angle of the hook, and the length of the straight section of the hook, are basic parameters for forming the reinforcement with the hook at the end, and other parameters are added as needed. Straight section 1 and the straight section of crotch 3 all tangent with crooked section 2, the reinforcing bar diameter is the nominal diameter of reinforcing bar, reinforcing bar length is equal to the length of the straight section of reinforcing bar 1 + the interior limit radius of crooked section 2, 2 bending radii of crooked section of reinforcing bar are equal to the interior limit bending radius of reinforcing bar.
The coordinates of the straight section in the third step in this embodiment, the length of the straight section; the coordinates of the bending section and the size of the bending section; the coordinates of the straight section of the hook and the size of the straight section of the hook refer to the definitions in the plane coordinate system of the component attributes in the sketchup. The coordinate of the straight section 1 is the coordinate of the starting point 4 of the straight section 1 and is set as the origin point coordinate (0,0) of the steel bar component; the coordinates of the bending section 2 are arranged at a point 5 tangent to the straight section 1, the x-axis coordinate of the plane of the tangent point 5 is equal to the length of the straight section 1, and the y-axis coordinate is equal to 0; the size LenX of the bending section 2 is bending radius + steel bar diameter/2, and LenY is bending radius + steel bar diameter/2 + sin (180-bending angle) x (bending radius + steel bar diameter/2); the coordinates of the hook flat straight section 3 are arranged at a point 6 tangent to the bent section 2, the x-axis coordinate of the plane of the tangent point 6 is equal to the length of the flat straight section 1 + cos (180-bending angle) x (bending radius + steel bar diameter/2), and the y-axis coordinate is equal to the LenY value of the bent section 2; the dimension LenX of the hook straight section 3 is cos (180-bending angle) multiplied by the length of the hook straight section 3, and LenY is sin (180-bending angle) multiplied by the length of the hook straight section 3.
In the fourth step of this embodiment, the rebar assemblies are copied into the newly-created sketchup file, so as to establish a rebar model library with different specifications and styles. The steel bar solid model is generated by using a sketchup line-to-column plug-in, and is also generated by using a path following function carried by the sketchup.
The invention discloses a Sketchup-based BIM steel bar modeling method, wherein steel bars of the same type can be repeatedly utilized only by setting steel bar parameters after a model is established according to the method, the method is simple, the modeling speed is high, the set various parameters are extracted, the effect is good, and the practicability is high.
The invention is further described below as applied to the sketchup modeling of a 135 ° threaded steel bar with a 25mm diameter and a 500mm length, with a hook at one end.
The specific implementation steps are as follows:
(1) drawing a straight section 1 line segment, a curved section 2 circular arc and a hook straight section 3 line segment by taking the center line of a steel bar as a reference, wherein the straight section 1 line segment and the hook straight section 3 line segment are respectively tangent to two ends of the circular arc of the curved section 2, adding reference points at nodes 4, 5, 6, 7 and 8 of each group in order to define the groups, selecting the line segments of each part and corresponding reference points to generate the groups, wherein the straight section 1 group consists of the reference points 4 and 5 and the straight section 1, the curved section 2 group consists of a circle center reference point 8 of the circular arc 2 and the circular arc 2, and the hook straight section 3 consists of the reference points 7 and 8 and the line segment 3. The entire rebar model is defined as a rebar assembly.
(2) Adding and setting the self-defined attribute of the steel bar assembly: the diameter D of the steel bar is 2.5cm, the length L of the steel bar is 50cm, the bending angle WQJD is 135, the bending radius coefficient WQBS is 2.5, the bending radius R is WQBS D/2+ D/2, the hook angle is 135 degrees, the length coefficient WQZX of the straight section of the hook is 5, and the total blanking length TotalL of the steel bar is a straight line section! LenX + PI () WQJD/180 ar + WQZX D.
(3) Setting the coordinate axis of the steel bar component as a point 4, and setting the coordinate as (0, 0); the coordinate axis of the group straight section 1 is a point 4; the coordinate axis of the group bending segment 2 is set at point 5, and the axis coordinate x is equal to the straight segment! LenX, y-axis coordinate is 0, size LenX is reinforcing steel bar! R, LenY ═ Rebar! R + sin (180- (reinforcing bar! WQJD)). Rebar! R; the group hook straight section 3 coordinate is set at point 6, the axis coordinate x is equal to straight section! LenX + COS (45).! R, y-axis coordinate ═ bend section! LenY, size LenX ═ cos (45) — rebar |)! WQZX Steel Bar! D, LenY sin (45) rebar! WQZX Steel Bar! D.
(4) Copying the steel bar assembly to other places, completely exploding the copied steel bar assembly, selecting the whole steel bar line segment, and generating the steel bar solid model by using the sketchup line rotary column plug-in.
(5) The built steel bar assembly is suitable for models with different steel bar specifications and lengths in the same type of hook form.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole and the embodiments in each example also be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (5)
1. A sketchup dynamic component-based method for quickly modeling a steel bar with a tail end and a hook is characterized by comprising the following steps:
the method comprises the following steps: the whole steel bar model is defined as an assembly which is divided into three parts: the straight section, the bending section and the hook straight section are respectively defined as a group;
step two, setting the attribute of the steel bar component: the diameter of the steel bar, the length of the steel bar, the bending radius, the angle of the hook and the length of the straight section of the hook;
step three, setting the three group attributes of the step one: a straight section coordinate and a straight section length; the coordinates of the bending section and the size of the bending section; coordinates of a straight section of the hook and the size of the straight section of the hook;
and fourthly, copying the steel bar components, completely exploding the copied steel bar components, selecting the whole steel bar line segment, and generating a steel bar solid model by using the sketchup line rotary cylinder plug-in.
2. The sketchup dynamic component-based method for rapidly modeling the steel bars with the end hooks as claimed in claim 1, wherein the sketchup dynamic component-based method comprises the following steps: in the three groups in the step one, in order to define the groups, reference points can be added at nodes of each group, and the groups are generated by selecting line segments of each part and corresponding reference points.
3. The sketchup dynamic component-based method for rapidly modeling the steel bars with the end hooks as claimed in claim 1, wherein the sketchup dynamic component-based method comprises the following steps: the reinforcing bar subassembly attribute in the step two, reinforcing bar diameter, reinforcing bar length, bend radius, crotch angle, the straight section length of crotch are for constituting there is the basic parameter of terminal crotch reinforcing bar, and other parameters add as required, the straight section of straight section and crotch are all tangent with the crooked section, reinforcing bar diameter is the nominal diameter of reinforcing bar, reinforcing bar length is equal to the length of the straight section of reinforcing bar + the interior limit radius of crooked section, reinforcing bar crooked section bend radius is equal to the interior limit bend radius of reinforcing bar.
4. The sketchup dynamic component-based method for rapidly modeling the steel bars with the end hooks as claimed in claim 1, wherein the sketchup dynamic component-based method comprises the following steps: the coordinates of the straight section in the third step and the length of the straight section; the coordinates of the bending section and the size of the bending section; the coordinates of the straight section of the hook and the size of the straight section of the hook refer to the definitions in a plane coordinate system of the component attributes in the sketchup, the coordinates of the straight section are the coordinates of the starting point of the straight section and are set as the coordinates (0,0) of the origin of the steel bar component; the coordinates of the bending section are arranged at the tangent points of the straight section, the x-axis coordinate of the tangent point plane is equal to the length of the straight section, and the y-axis coordinate is equal to 0; the bending section size LenX is bending radius + steel bar diameter/2, and LenY is bending radius + steel bar diameter/2 + sin (180-bending angle) x (bending radius + steel bar diameter/2); the coordinates of the straight section of the hook are arranged at the tangent point of the bent section, the x-axis coordinate of the tangent point plane is equal to the length of the straight section + cos (180-bending angle) x (bending radius + diameter of the steel bar/2), and the y-axis coordinate is equal to the LenY value of the bent section; the dimension LenX of the straight hook section is cos (180-bending angle) multiplied by the length of the straight hook section, and LenY is sin (180-bending angle) multiplied by the length of the straight hook section.
5. The sketchup dynamic component-based method for rapidly modeling the steel bars with the end hooks as claimed in claim 1, wherein the sketchup dynamic component-based method comprises the following steps: and copying the steel bar assembly in the fourth step into a newly-built sketchup file, wherein the steel bar entity model is generated by using a sketchup line-to-column plug-in and also generated by using a path following function carried by the sketchup.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103324806A (en) * | 2013-07-04 | 2013-09-25 | 中船第九设计研究院工程有限公司 | Sketchup workshop auto-modeling method on the basis of language Ruby |
| CN105544887A (en) * | 2015-12-11 | 2016-05-04 | 中建二局第三建筑工程有限公司 | Upturned roof-ridge cornice of Tang style simulation building and construction method thereof |
| CN106284848A (en) * | 2016-09-30 | 2017-01-04 | 中国建筑第五工程局有限公司 | Compound stirrup |
| CN107012957A (en) * | 2017-04-27 | 2017-08-04 | 四川农业大学 | The varied rigid link technique and device of a kind of new filling wall and chassis body |
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| US7912807B2 (en) * | 2009-04-30 | 2011-03-22 | Integrated Environmental Solutions, Ltd. | Method and system for modeling energy efficient buildings using a plurality of synchronized workflows |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103324806A (en) * | 2013-07-04 | 2013-09-25 | 中船第九设计研究院工程有限公司 | Sketchup workshop auto-modeling method on the basis of language Ruby |
| CN105544887A (en) * | 2015-12-11 | 2016-05-04 | 中建二局第三建筑工程有限公司 | Upturned roof-ridge cornice of Tang style simulation building and construction method thereof |
| CN106284848A (en) * | 2016-09-30 | 2017-01-04 | 中国建筑第五工程局有限公司 | Compound stirrup |
| CN107012957A (en) * | 2017-04-27 | 2017-08-04 | 四川农业大学 | The varied rigid link technique and device of a kind of new filling wall and chassis body |
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