CN108197348B - Method and device for correcting and processing surface member errors in constructional engineering - Google Patents
Method and device for correcting and processing surface member errors in constructional engineering Download PDFInfo
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Abstract
The invention provides a method and a device for correcting and processing surface member errors in constructional engineering, wherein the method comprises the following steps: acquiring axis network data and size marking data, and grouping and sequencing mutually parallel axes; determining the distance L between the other of the two parallel sidelines and the axis; correcting non-parallel edge lines; according to the characteristics of the building engineering, the invention corrects the non-parallel and non-vertical lines during partial drawing to be parallel and vertical to the axis by means of the axis network data. And according to the size marking data on the design drawing, correcting the positions of the parallel lines by combining the distances from the parallel lines to the axis. In addition, false short side lines and excessive sharp corners can be corrected, and errors of design drawings are effectively corrected.
Description
Technical Field
The invention relates to a method for correcting errors of constructional engineering, in particular to a method for correcting errors of a surface member in constructional engineering.
Background
In the process of applying building software related to graphics, such as BIM modeling software, model and shelf software application, template software application and other building software applications, it is usually necessary to generate some members (called surface members for short) with section types through a certain algorithm or boolean operation according to geometric information on drawings, such as members with section types, e.g., generated column members, generated plate members and the like, some drawings are not drawn accurately, e.g., lines are drawn with slight deviations in parallel and perpendicular directions, and lines are not connected to the head or over the head when connected, and at this time, sections generated according to the lines may have deviations and are not shapes to be designed and expressed by designers, so that the designed rectangular section may become trapezoidal, pentagonal, hexagonal and other shapes, and subsequent software applications thereof are affected.
Disclosure of Invention
The invention aims to solve the technical problem that the cross section deviation is generated by an algorithm and Boolean operation when the cross section of a component is generated or the cross section of a building component is not accurately drawn, so that the cross section deviation is inconsistent with the actual design.
The invention comprises the following steps:
s1: acquiring the axle network data of the building components in the design drawing, dividing the parallel axes into a group, and sequencing;
s2: obtaining dimension marking data of the building component in a design drawing, finding an axis which is coincident with one of two parallel sidelines corresponding to the dimension marking data from the axes, and determining the distance L between the other of the two parallel sidelines and the axis;
s3: searching a sideline which is not parallel to the axis and forms an angle larger than an angle set value, and correcting the sideline to be parallel to the axis;
s4: and moving the edge parallel to the axis after the correction in the S3 to the position determined by the distance L according to the distance between the other edge of the two parallel edges determined in the S2 and the axis.
Further, the method also includes step S5:
s5, searching an inner angle e smaller than a set value in the polygonal section of the building element in the design drawing, and removing the inner angle e;
further, the method also includes step S6:
s6, searching a false short sideline in the polygonal section of the building member in the design drawing, wherein the length of the sideline is smaller than a set value, and removing the false short sideline;
further, in step S5, the method for removing the internal angle e is as follows:
determining a short side line of the two side lines of the inner angle e, finding the other end point f of the short side line, determining the other side line taking the end point f as an end point, extending and intersecting the other side line with a long side line of the two side lines of the inner angle e to form an intersection point C, removing the inner angle e, and taking the intersection point C as a vertex to form a new polygonal section of the building element.
Further, in step S6, the method for removing the false short edge includes:
calculating the side length of each side line of the polygonal section of the building member, determining a false short side line to be removed, extending and intersecting two side lines adjacent to the false short side line to form a new vertex of the polygon, deleting the vertexes at two ends of the false short side line and removing the false short side line.
Further, the axis grouping and ordering method comprises the following steps:
acquiring straight lines in all axes, and dividing all the parallel straight lines into a group; and sequencing according to the positions of the projections of the parallel lines on the vertical line vertical to the group of parallel lines.
Further, when the internal angle e is less than the set value of 15 degrees, the internal angle e is removed.
On the other hand, the invention discloses a device for correcting and processing the errors of surface members in the building engineering, which comprises:
the shaft network data acquisition device is used for dividing mutually parallel axes of the building components in a design drawing into a group and sequencing the axes;
the dimension marking data acquisition device is used for finding one axis which is coincident with one of the two parallel sidelines corresponding to the dimension marking data from the axes and determining the distance L between the other one of the two parallel sidelines and the axis;
a non-parallel borderline correcting device for searching a borderline non-parallel to the axis and correcting the borderline to be parallel to the axis;
and the sideline moving device is used for moving the sideline which is parallel to the axis and is corrected by the unparallel sideline correcting device to the position determined by the distance L according to the distance L between the other one of the two parallel sidelines and the axis determined by the size marking data acquisition device.
Further, the device also comprises an inner angle e removing device which is used for searching the inner angle e smaller than the set value in the polygonal section of the building element in the design drawing and removing the inner angle e.
Further, the method also comprises the following steps: and the false short sideline removing device is used for searching for a false short sideline in the design drawing, wherein the sideline length of the polygonal section of the building member is smaller than a set value, and removing the false short sideline.
Compared with the prior art, the invention has the following advantages and effects:
1. automatically correcting errors of the surface components;
2. improve work efficiency, practice thrift cost in business.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the process of the present invention.
FIG. 2 is a diagram illustrating the correction of non-parallel edges.
Fig. 3 is a schematic diagram of the removal of the inner angle e.
FIG. 4 is a schematic diagram of removing unwanted false short edges.
Detailed Description
The patent is described in detail below with reference to specific examples:
1. obtaining shaft network labeling topological data
In the architectural engineering design drawing, the axis network is a positioning basis of all architectural components, the side lines of most surface components are parallel to the axis, and based on the characteristic, a part of drawing errors can be corrected. In the invention, the axle network data and the size marking data on the drawing are firstly obtained, and the parallel axle data are divided into a group and sequenced. The grouping and ordering may employ the following methods: firstly, acquiring straight lines in all axes, then dividing all the mutually parallel straight lines into a group respectively, and at least two groups of parallel lines exist in one axis network; each set of parallel lines is arbitrarily assigned a vertical line which can be infinitely long, and then the parallel lines are projected on the vertical line and sorted according to the positions of the projection points on the straight line. Usually, the electronic files of the architectural design drawings are stored in a dwg format, and by reading the dwg format, the size marking data can be obtained, and if no dwg file exists, the size marking data can be ignored. The obtained dimension marking data has two parallel edges, a group of data parallel to the two edges is found from the axis data, an axis coincident with one position of the two edges is found from the group of data, then the distance from the other edge to the axis is the distance expressed by the marking characters of the mark, and the data is stored for correcting the geometric line segment data.
2. Sideline data correction
As shown in fig. 2, there are often side lines in the design drawing that should be parallel to the axis, which are not drawn to be parallel in the actual drawing, and the lower line BC of the rectangular cross section should be parallel to the M axis, but there is a slight deviation due to carelessness in drawing, and the pillar generated at this time will not conform to the design and needs to be corrected. In the invention, the data of each sideline is obtained through the section of the surface member, then all sideline data are matched with the axis network data, and a parallel axis group is searched. According to the characteristics of construction engineering, when a parallel axis is searched, a proper angle error is allowed, in the invention, line segments within 3 degrees of the angle error of the axis are considered to be parallel to the axis, and the parallelism correction is considered to be carried out when the angle error is larger than the set value by 3 degrees. After finding the parallel axis group, if there is an angle error, we first correct this edge line according to the angle of the axis, such as BC side in fig. 2, we can move point C downward to make BC side completely parallel to axis M. And then, positioning the axes of the left side and the right side of the sideline according to the position of the sideline, searching the marking data corresponding to the sideline according to the obtained axle network size chain data to determine the distance relative to the axis M, moving the sideline to the position of the distance, and modifying the end points at the two ends of the sideline to ensure that the two sidelines adjacent to the sideline are connected with the sideline. In fig. 2, since the point C is determined on the lower line of the label 300 by the distance from the point to the lower line, in the present invention, the point is determined to be on the side line within 3 mm according to the characteristics of the construction. After finding out that the BC sideline matches with the bottom sideline of the label 300, we have determined in step 1 that the top sideline of the label 300 is on the M axis, so that it can be determined that the BC sideline is 300 mm below the M axis, move the BC sideline to this distance, and cross the BC sideline with the original AB line and CD line to re-determine the B point and the C point, thereby accurately correcting the position of the BC sideline.
2. Removing sharp corners
As shown in fig. 3, some drawings may generate a section with a sharp corner when the section is generated by a geometric operation algorithm due to the fact that line segments are not drawn in place, which is inconsistent with the actual engineering, and points e and f are added in fig. 3, which needs to be corrected. In the invention, first the internal angle of a polygonal section is found to be less than a certain value, preferably 15 °, and in construction engineering, this type of section with sharp corners should not exist basically, and it can be considered that the section needs to be corrected, so that the angle e can be found. Then, the length of the side lines at two sides is judged, the other end point f of the side line with short length is found, then the side lines adjacent to the two sides of the corner are extended to intersect with the corner side line, the intersection point is the point C, the Be side line is changed into BC, the Df side line is changed into DC, and the ef side line is deleted. That is, after the angle e is determined to Be a sharp angle, according to the characteristics of the engineering, we only need to judge the side lengths of two sides Be and ef of the angle, for example, the side length of ef in fig. 3 is smaller than the side length of Be, so we can judge that the Df side needs to Be extended to intersect with the Be side, generate a point C, and then generate a new BC side and a CD side, so that a correct cross section ABCD can Be generated, thereby correcting the cross section.
3. Removing false short edge lines
As shown in fig. 4, some drawings generate redundant false short edges when cross sections are generated by geometric operation algorithms, which is inconsistent with the actual engineering, for example, fig. 4 has an extra e point, and correction is needed at this time. In the invention, the sidelines with the sideline length smaller than the specific value in the polygonal section are searched, and the sidelines with the short sidelines should not exist according to the characteristics of the building engineering. In the invention, the side length of each side is calculated to judge whether the side length needs to be removed or not, when the side length is smaller than a set value, the side length is determined to belong to a false short side line, the set value can be adjusted and modified according to engineering characteristics, the false short side line is determined and then extended to be intersected through two side lines adjacent to the false short side line to form a new polygon vertex, and simultaneously, the vertexes at two ends of the false short side line are deleted to clear the false short side line, thereby correcting the section.
In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes of the structure, the characteristics and the principle of the invention which are described in the patent conception of the invention are included in the protection scope of the patent of the invention. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A method for correcting errors of surface members in constructional engineering comprises the following steps:
s1: acquiring the axle network data of the building components in the design drawing, dividing the parallel axes into a group, and sequencing;
s2: obtaining dimension marking data of the building component in a design drawing, finding an axis which is coincident with one of two parallel sidelines corresponding to the dimension marking data from the axes, and determining the distance L between the other of the two parallel sidelines and the axis;
s3: searching a sideline which is not parallel to the axis and forms an angle larger than an angle set value, and correcting the sideline to be parallel to the axis;
s4: and moving the edge parallel to the axis after the correction in the S3 to the position determined by the distance L according to the distance between the other edge of the two parallel edges determined in the S2 and the axis.
2. The method for correcting errors of surface members in constructional engineering as claimed in claim 1, further comprising step S5:
s5, searching an inner angle e smaller than a set value in the polygonal section of the building element in the design drawing, and removing the inner angle e.
3. The method for correcting errors of surface members in construction engineering according to claim 2, further comprising step S6:
and S6, searching a false short side line in the polygonal section of the building member in the design drawing, wherein the side line length is smaller than a set value, and removing the false short side line.
4. The method for processing error correction of a surface member in construction engineering according to claim 2, wherein in the step S5, the method for removing the internal angle e is as follows:
determining a short side line of the two side lines of the inner angle e, finding the other end point f of the short side line, determining the other side line taking the end point f as an end point, extending and intersecting the other side line with a long side line of the two side lines of the inner angle e to form an intersection point C, removing the inner angle e, and taking the intersection point C as a vertex to form a new polygonal section of the building element.
5. The method for processing error correction of surface members in construction engineering according to claim 3, wherein in step S6, the method for removing the false short side line is as follows:
calculating the side length of each side line of the polygonal section of the building member, determining a false short side line to be removed, extending and intersecting two side lines adjacent to the false short side line to form a new vertex of the polygon, deleting the vertexes at two ends of the false short side line and removing the false short side line.
6. The method for processing error correction of surface members in constructional engineering as claimed in any one of claims 1 to 5, wherein the method for grouping and ordering the axes is:
acquiring straight lines in all axes, and dividing all the parallel straight lines into a group; and sequencing according to the positions of the projections of the parallel lines on the vertical line vertical to the group of parallel lines.
7. The method for processing error correction of a surface member in construction works according to any one of claims 2 to 5, wherein when the inner angle e is less than a set value of 15 degrees, the inner angle e is removed, and in the step S3, the set value of the angle is 3 degrees.
8. A surface member error correction processing apparatus in construction engineering is characterized by comprising:
the shaft network data acquisition device is used for dividing mutually parallel axes of the building components in a design drawing into a group and sequencing the axes;
the dimension marking data acquisition device is used for finding one axis which is coincident with one of the two parallel sidelines corresponding to the dimension marking data from the axes and determining the distance L between the other one of the two parallel sidelines and the axis;
a non-parallel borderline correcting device for searching a borderline non-parallel to the axis and correcting the borderline to be parallel to the axis;
and the sideline moving device is used for moving the sideline which is parallel to the axis and is corrected by the unparallel sideline correcting device to the position determined by the distance L according to the distance L between the other one of the two parallel sidelines and the axis determined by the size marking data acquisition device.
9. The apparatus for processing correction of error of surface member in construction work according to claim 8, further comprising:
and the interior angle e removing device is used for searching the interior angle e smaller than the set value in the polygonal section of the building element in the design drawing and removing the interior angle e.
10. The apparatus for processing correction of error of surface member in construction work according to claim 8, further comprising:
and the false short sideline removing device is used for searching for a false short sideline in the design drawing, wherein the sideline length of the polygonal section of the building member is smaller than a set value, and removing the false short sideline.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11167645A (en) * | 1997-12-04 | 1999-06-22 | Daitec:Kk | Path line alignment drawing method |
| CN101446999A (en) * | 2008-12-24 | 2009-06-03 | 南京大学 | Automatic checking method for dimension line marking error in engineering drawing |
| CN101561834A (en) * | 2009-06-03 | 2009-10-21 | 湖南大学 | Method for aligning point cloud and geometric digifax based on analyses using section lines |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11167645A (en) * | 1997-12-04 | 1999-06-22 | Daitec:Kk | Path line alignment drawing method |
| CN101446999A (en) * | 2008-12-24 | 2009-06-03 | 南京大学 | Automatic checking method for dimension line marking error in engineering drawing |
| CN101561834A (en) * | 2009-06-03 | 2009-10-21 | 湖南大学 | Method for aligning point cloud and geometric digifax based on analyses using section lines |
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