CN111737802A - Method for automatically separating beam from column based on three-dimensional model and semantic description information - Google Patents
Method for automatically separating beam from column based on three-dimensional model and semantic description information Download PDFInfo
- Publication number
- CN111737802A CN111737802A CN202010586093.6A CN202010586093A CN111737802A CN 111737802 A CN111737802 A CN 111737802A CN 202010586093 A CN202010586093 A CN 202010586093A CN 111737802 A CN111737802 A CN 111737802A
- Authority
- CN
- China
- Prior art keywords
- point
- column
- position line
- dimensional model
- ptorigin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2210/00—Indexing scheme for image generation or computer graphics
- G06T2210/04—Architectural design, interior design
Abstract
The invention discloses a method for automatically splitting a beam by a column based on a three-dimensional model and semantic description information, which comprises the following steps: s1, obtaining a three-dimensional model; s2, filtering out the beam component; s3, filtering and beam lap joint column members; s4, acquiring a position line of the beam and a position point of the column; s5, projecting the position point of the column to the same horizontal plane with the position line of the beam; s6, judging whether the shortest distance from the point of the column position point projected on the surface to the position line of the beam is within the tolerance range; s7, continuously judging whether the point of the position point of the column projected on the position line of the beam is superposed with one end of the position line of the beam; s8, acquiring the position information of the point of the column position point projected on the beam position line; s9, repeating the steps S3-S8, finding out all the partition points, and automatically splitting the beam by the column at one time; the invention automatically segments the beams, omits the complicated segmentation operation of manual selection, avoids missing the splitting of certain beams and improves the efficiency and the accuracy of the splitting of the components.
Description
Technical Field
The invention relates to the technical field of building engineering model optimization, in particular to a method for automatically separating a beam from a column based on a three-dimensional model and semantic description information.
Background
At present, along with the continuous deepening of BIM technical application, the engineering quantity information has also been widely developed based on structure model statistics, however, the relevant software technology in the present stage can not satisfy the demand of the user on model engineering quantity calculation, lacks the relevant function point to the three-dimensional model calculation, how to realize adjusting the model before the engineering quantity calculation, how to solve the problem that a large amount of undetached components appear in the model and has not been solved yet, therefore the splitting operation of roof beam according to the post all relies on manual selection among the prior art, manual splitting roof beam exists inefficiency, often inaccurate splitting technical problem, can not satisfy the construction demand of high-efficient high-quality low rework rate.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a method for automatically splitting a beam by a column based on a three-dimensional model and semantic description information, which can improve the splitting efficiency of the beam, ensure the accuracy of splitting operation and improve the working efficiency of construction projects.
In order to achieve the purpose, the invention provides a method for automatically splitting a beam by a column based on a three-dimensional model and semantic description information, which comprises the following steps:
s1, acquiring an engineering three-dimensional model;
s2, filtering out beam members in the three-dimensional model: traversing all building components in the three-dimensional model, and filtering and extracting beam components in the model according to semantic information and component characteristics of the components;
s3, filtering column members overlapped by the beams in the three-dimensional model: continuously traversing each beam member obtained in the step S2, obtaining all members intersected with the beam member according to the solid geometric bounding box range of the beam, and continuously filtering the column members according to semantic information of the members;
s4, acquiring the position information of the position line L of the beam member filtered in step S2 and the position information of the position point PTOrigin of the pillar member filtered in step S3;
s5, projecting the position point PTOrigin of the pillar member in the step S4 on the same horizontal plane as the beam position line L in the step S4;
s6, judging whether the shortest distance from a point PT projected on the surface by the column position point PTorigin to the position line L of the beam is within a tolerance range or not, and if not, taking the point PT as a non-dividing point of the beam;
s7, if the shortest distance from the point PT of the column position point PTorigin projected on the surface to the position line L of the beam in the step S6 is within the tolerance range, the point PT of the column position point PTorigin projected on the surface is considered to be intersected with the position line L of the beam, and whether the point PT of the column position point PTorigin projected on the position line L of the beam is overlapped with one end of the beam position line L or not is continuously judged;
s8, if the point PT in the step S7 is not overlapped with the two ends of the position line L of the beam, the point PT is judged as a beam dividing point, and then the position information of the point PT projected from the column position point PTorigin to the beam position line L is obtained;
and S9, repeatedly executing the steps S3-S8, finding out the dividing points PT meeting the dividing conditions in the column members which are intersected with all the beams correspondingly, and realizing the one-time automatic beam member splitting by the column.
Preferably, the specific method of acquiring the position line L of the filtered beam member in step S4 is as follows: coordinates of the start point PT0 and coordinates of the end point PT1 of the beam member are acquired, and a position line L is constructed with PT0 and PT1.
Preferably, the position point ptoorigin of the pillar member in step S4 is the bottom center point of the pillar member.
Preferably, the specific method for determining whether the point PT where the position point PTOrigin of the pillar is projected onto the position line L of the beam coincides with one end of the beam position line L in step S7 is as follows: calculating whether the distance values from the position point PT to the PT0 and the PT1 are smaller than a tolerance T value or not, and if one of the two distance values is smaller than the tolerance T value, considering that the position point PT is overlapped with one of two ends of a beam position line L; on the contrary, if one of the two distance values is smaller than the value T, the position point PT is considered not to be coincident with the two ends of the beam position line L.
Preferably, the specific method for acquiring the position information of the point PT where the pillar position point PTOrigin is projected onto the beam position line L in step S8 is as follows: a distance value between the point PT and PT0 or PT1 is calculated, and the length ratio of the position line L between PT and PT0 or PT1 is calculated based on the distance value, and the beam member is divided by using the ratio.
Preferably, the method further comprises step S10: and numbering all the beams split by the columns.
Compared with the prior art, the invention has the beneficial effects that:
the method can automatically complete the filtration of the beam and the lapped columns, automatically judge whether the beam and the lapped columns meet the segmentation conditions, and automatically segment the beam, thereby omitting the complicated processes of manual selection and segmentation operation, avoiding missing the splitting of certain beams, improving the splitting efficiency and accuracy of the member, and improving the working efficiency of construction projects.
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 introduced below, and it is obvious that the drawings in the following description are 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 flow chart of a method for automatically splitting a beam by a column based on a three-dimensional model and semantic description information, provided by the invention;
FIG. 2 is a diagram of an engineering three-dimensional model provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, the present invention provides a method for automatically splitting a beam by a column based on a three-dimensional model and semantic description information, which comprises the following steps:
s1, acquiring an engineering three-dimensional model;
s2, filtering out beam members in the three-dimensional model: traversing all building components in the three-dimensional model, and filtering and extracting beam components in the model according to semantic information and component characteristics of the components;
s3, filtering column members overlapped by the beams in the three-dimensional model: continuously traversing each beam member obtained in the step S2, obtaining all members intersected with the beam member according to the solid geometric bounding box range of the beam, and continuously filtering the column members according to semantic information of the members, so that columns which are not overlapped can be eliminated, and the columns which are not overlapped can be selected during manual selection, so that the step is favorable for improving the splitting efficiency and accuracy;
s4, acquiring the position information of the position line L of the beam member filtered in step S2 and the position information of the position point PTOrigin of the pillar member filtered in step S3;
in step S4, the specific method of acquiring the position line L of the filtered beam member includes: acquiring coordinates of a starting point PT0 and a terminal point PT1 of the beam member, and constructing a position line L by using PT0 and PT 1; and the position point PTorigin of the pillar member is preferably the bottom center point of the pillar member, which facilitates a reference for later calculations;
s5, projecting the position point PTOrigin of the pillar member in step S4 onto the same horizontal plane as the beam position line L in step S4, specifically, duplicating the pillar position point coordinates PTOrigin to PT, setting the Z value in the vertical direction of PT to (pt0.z + pt1.z)/2, thereby achieving the purpose of aligning the position point PT with the starting point of the beam in the vertical direction for the convenience of the subsequent calculation by a projector;
s6, judging whether the shortest distance from a point PT projected on the surface by the column position point PTorigin to the position line L of the beam is within a tolerance range or not, and if not, taking the point PT as a non-dividing point of the beam;
s7, if the shortest distance from the point PT of the column position point PTorigin projected on the surface to the position line L of the beam in the step S6 is within the tolerance range, the point PT of the column position point PTorigin projected on the surface is considered to be intersected with the position line L of the beam, the point is possibly used as a key point for cutting the beam, and whether the point PT of the column position point PTorigin projected on the position line L of the beam is coincident with one end of the beam position line L or not is continuously judged;
in step S7, a specific method for determining whether the point PT at which the position point PTOrigin of the pillar is projected onto the position line L of the beam coincides with one end of the beam position line L includes: calculating whether the distance values from the position point PT to the PT0 and the PT1 are smaller than a tolerance T value or not, if one of the two distance values is smaller than the tolerance T value, the position point PT is considered to be overlapped with one of two ends of a beam position line L, and the segmentation condition is not met; on the contrary, if one of the two distance values is smaller than the T value, the position point PT is considered to be not coincident with the two ends of the beam position line L;
s8, if the point PT in the step S7 is not overlapped with the two ends of the position line L of the beam, the point PT is judged as a beam dividing point, and then the position information of the point PT projected from the column position point PTorigin to the beam position line L is obtained;
in step S8, a specific method of acquiring the position information of the point PT where the post position point PTOrigin is projected onto the beam position line L is: calculating the distance value between the point PT and PT0 or PT1, calculating the length proportion of the position line L occupied by PT-PT 0 or PT1 according to the distance value, and dividing the beam member by using the proportion;
and S9, repeatedly executing the steps S3-S8, finding out the dividing points PT meeting the dividing conditions in the column members which are intersected with all the beams correspondingly, and realizing the one-time automatic beam member splitting by the column.
S10: and all the beams split by the columns are numbered, so that different beams can be distinguished conveniently.
In conclusion, by adopting the method, the beams and the overlapped columns thereof can be automatically filtered, whether the beam columns meet the segmentation conditions or not can be automatically judged, the beams can be automatically segmented, the complicated processes of manual selection and segmentation operation are omitted, the splitting of some beams is avoided, the efficiency and the accuracy of the splitting of the members are improved, and the working efficiency of construction projects is improved.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (6)
1. A method for automatically splitting a beam by a column based on a three-dimensional model and semantic description information is characterized by comprising the following steps:
s1, acquiring an engineering three-dimensional model;
s2, filtering out beam members in the three-dimensional model: traversing all building components in the three-dimensional model, and filtering and extracting beam components in the model according to semantic information and component characteristics of the components;
s3, filtering column members overlapped by the beams in the three-dimensional model: continuously traversing each beam member obtained in the step S2, obtaining all members intersected with the beam member according to the solid geometric bounding box range of the beam, and continuously filtering the column members according to semantic information of the members;
s4, acquiring the position information of the position line L of the beam member filtered in step S2 and the position information of the position point PTOrigin of the pillar member filtered in step S3;
s5, projecting the position point PTOrigin of the pillar member in the step S4 on the same horizontal plane as the beam position line L in the step S4;
s6, judging whether the shortest distance from a point PT projected on the surface by the column position point PTorigin to the position line L of the beam is within a tolerance range or not, and if not, taking the point PT as a non-dividing point of the beam;
s7, if the shortest distance from the point PT of the column position point PTorigin projected on the surface to the position line L of the beam in the step S6 is within the tolerance range, the point PT of the column position point PTorigin projected on the surface is considered to be intersected with the position line L of the beam, and whether the point PT of the column position point PTorigin projected on the position line L of the beam is overlapped with one end of the beam position line L or not is continuously judged;
s8, if the point PT in the step S7 is not overlapped with the two ends of the position line L of the beam, the point PT is judged as a beam dividing point, and then the position information of the point PT projected from the column position point PTorigin to the beam position line L is obtained;
and S9, repeatedly executing the steps S3-S8, finding out the dividing points PT meeting the dividing conditions in the column members which are intersected with all the beams correspondingly, and realizing the one-time automatic beam member splitting by the column.
2. The method for automatically splitting the beam by the column based on the three-dimensional model and the semantic description information as claimed in claim 1, wherein the specific method for obtaining the position line L of the filtered beam member in the step S4 is as follows: coordinates of the start point PT0 and coordinates of the end point PT1 of the beam member are acquired, and a position line L is constructed with PT0 and PT1.
3. The method for automatically splitting a beam by a column based on a three-dimensional model and semantic description information as claimed in claim 1, wherein the position point PToriigin of the column member in step S4 is the bottom center point of the column member.
4. The method for automatically splitting a beam by a column based on a three-dimensional model and semantic description information as claimed in claim 2, wherein the specific method for determining whether the point PT of the position point PTOrigin projected onto the position line L of the beam coincides with one end of the beam position line L in step S7 is: calculating whether the distance values from the position point PT to the PT0 and the PT1 are smaller than a tolerance T value or not, and if one of the two distance values is smaller than the tolerance T value, considering that the position point PT is overlapped with one of two ends of a beam position line L; on the contrary, if one of the two distance values is smaller than the value T, the position point PT is considered not to be coincident with the two ends of the beam position line L.
5. The method for automatically splitting the beam by the column based on the three-dimensional model and the semantic description information as claimed in claim 2, wherein the specific method for acquiring the position information of the point PT where the column position point ptoorigin is projected onto the beam position line L in the step S8 is as follows: a distance value between the point PT and PT0 or PT1 is calculated, and the length ratio of the position line L between PT and PT0 or PT1 is calculated based on the distance value, and the beam member is divided by using the ratio.
6. The method for automatically splitting the beam by the column based on the three-dimensional model and the semantic description information according to any one of claims 1 to 5, further comprising the step of S10:
and numbering all the beams split by the columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010586093.6A CN111737802B (en) | 2020-06-24 | 2020-06-24 | Method for automatically separating beam from column based on three-dimensional model and semantic description information |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010586093.6A CN111737802B (en) | 2020-06-24 | 2020-06-24 | Method for automatically separating beam from column based on three-dimensional model and semantic description information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111737802A true CN111737802A (en) | 2020-10-02 |
| CN111737802B CN111737802B (en) | 2023-02-24 |
Family
ID=72650857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010586093.6A Active CN111737802B (en) | 2020-06-24 | 2020-06-24 | Method for automatically separating beam from column based on three-dimensional model and semantic description information |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111737802B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112200861A (en) * | 2020-10-30 | 2021-01-08 | 久瓴(江苏)数字智能科技有限公司 | Method and device for determining point-to-line position relationship, storage medium and electronic device |
| CN114193635A (en) * | 2021-12-23 | 2022-03-18 | 国泰新点软件股份有限公司 | Method and device for cutting beam in building engineering |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007304718A (en) * | 2006-05-09 | 2007-11-22 | Toyota Motor Corp | Outline point plotting method and device |
| CN110009727A (en) * | 2019-03-08 | 2019-07-12 | 深圳大学 | A kind of indoor threedimensional model automatic reconfiguration method and system with structure semantics |
| CN110570429A (en) * | 2019-08-30 | 2019-12-13 | 华南理工大学 | Lightweight real-time semantic segmentation method based on three-dimensional point cloud |
| CN110986878A (en) * | 2019-12-03 | 2020-04-10 | 中铁第一勘察设计院集团有限公司 | Method for automatically extracting rail section based on mobile measurement system |
-
2020
- 2020-06-24 CN CN202010586093.6A patent/CN111737802B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007304718A (en) * | 2006-05-09 | 2007-11-22 | Toyota Motor Corp | Outline point plotting method and device |
| CN110009727A (en) * | 2019-03-08 | 2019-07-12 | 深圳大学 | A kind of indoor threedimensional model automatic reconfiguration method and system with structure semantics |
| CN110570429A (en) * | 2019-08-30 | 2019-12-13 | 华南理工大学 | Lightweight real-time semantic segmentation method based on three-dimensional point cloud |
| CN110986878A (en) * | 2019-12-03 | 2020-04-10 | 中铁第一勘察设计院集团有限公司 | Method for automatically extracting rail section based on mobile measurement system |
Non-Patent Citations (2)
| Title |
|---|
| 强伟哲等: "基于图像分割的三维重构", 《计算机工程与应用》 * |
| 杨若瑜等: "三维数字建筑的自动生成和应用技术研究", 《智能系统学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112200861A (en) * | 2020-10-30 | 2021-01-08 | 久瓴(江苏)数字智能科技有限公司 | Method and device for determining point-to-line position relationship, storage medium and electronic device |
| CN112200861B (en) * | 2020-10-30 | 2023-02-17 | 久瓴(江苏)数字智能科技有限公司 | Method and device for determining column type, storage medium and electronic equipment |
| CN114193635A (en) * | 2021-12-23 | 2022-03-18 | 国泰新点软件股份有限公司 | Method and device for cutting beam in building engineering |
| CN114193635B (en) * | 2021-12-23 | 2024-03-12 | 国泰新点软件股份有限公司 | Method and device for cutting middle beam of constructional engineering |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111737802B (en) | 2023-02-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111737802B (en) | Method for automatically separating beam from column based on three-dimensional model and semantic description information | |
| WO2018153196A1 (en) | Method and apparatus for editing road element in map, electronic device, and storage medium | |
| CN111581711B (en) | Tower modeling method and device, terminal equipment and computer readable storage medium | |
| CN115471617A (en) | Local updating method for large-scene real-scene three-dimensional slice data | |
| CN112560147B (en) | BIM modeling calculation method and system for special-shaped roof lower column structure | |
| CN104036096B (en) | Method for mapping bump features on inclined face to manufacturing feature bodies | |
| CN111259474A (en) | Large-scale BIM model data processing and loading method and equipment | |
| CN115357979A (en) | Bridge three-dimensional automatic modeling method based on 3DE parametric template | |
| CN115131371B (en) | Two-dimensional and three-dimensional hybrid cutting method and terminal for building structural member based on area | |
| CN114912172A (en) | Method for rapidly obtaining coordinates and elevation of excavation control point of foundation pit | |
| CN110851896B (en) | CAD (computer-aided design) outer wall body identification method and device based on local neighborhood information | |
| CN115048707A (en) | Edge component splitting method based on building information model | |
| CN113884072A (en) | Automatic lofting method and system for line and tower footing | |
| CN112487554B (en) | Novel method, system and computer equipment for end cut definition based on model | |
| CN114911433A (en) | Intelligent CAD drawing framing method and system and readable storage medium | |
| CN114896666A (en) | Navigation tunnel parametric model establishing method and system based on BIM technology | |
| CN113656871B (en) | Building wall drawing method | |
| CN116512626A (en) | Welding position planning method, welding method and welding device for wiredrawing cloth surfboard | |
| CN112950744A (en) | Method, device and equipment for drawing flow chart by visual drag and storage medium | |
| CN112577498A (en) | Road data updating method and device, electronic equipment and storage medium | |
| JPH05120385A (en) | Modeling system | |
| CN113570682B (en) | Right-angle routing method and device | |
| CN113026457B (en) | Road construction segment determining method and determining device | |
| JP2005061931A (en) | Three-dimensional shape recovery method, its apparatus, and three-dimensional shape recovery program | |
| CN114820628B (en) | Data processing method and device suitable for turning numerical control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |