CN113792365A

CN113792365A - Editing method and editing device for BIM (building information modeling) model of prefabricated part

Info

Publication number: CN113792365A
Application number: CN202111032709.6A
Authority: CN
Inventors: 陈叶舟; 严事鸿; 殷科; 杨泉桢
Original assignee: Sany Construction Technology Co Ltd
Current assignee: Sany Construction Technology Co Ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2021-12-14

Abstract

The invention provides a method and a device for editing a BIM (building information modeling) model of a prefabricated part, wherein the method for editing the BIM model of the prefabricated part comprises the following steps: converting a three-dimensional BIM model into a two-dimensional data organization model, wherein a graphic primitive in the two-dimensional data organization model is represented by two-dimensional semantic description data; generating a two-dimensional view based on the two-dimensional data organization model; receiving a first input to the two-dimensional view; and responding to the first input, editing the two-dimensional view, and correspondingly adjusting the three-dimensional BIM model. According to the editing method of the BIM model of the prefabricated part, the three-dimensional BIM model is converted into the two-dimensional view, and the three-dimensional BIM model can be correspondingly adjusted by adjusting the two-dimensional view, so that the two-dimensional linkage between the two dimensions is realized, the operation steps of a user are simplified, the modification efficiency of the user on the BIM model is improved, and the operation experience of the user is optimized.

Description

Editing method and editing device for BIM (building information modeling) model of prefabricated part

Technical Field

The invention relates to the technical field of BIM, in particular to an editing method and an editing device for a BIM model of a prefabricated part.

Background

The fabricated deepened design of BIM has complexity and cooperativity, and involves more frequent modifications in the process of making the deepened design. In the prior art, a building model is usually modified directly in a three-dimensional model, various primitives and instances in the model are edited through commands of creating, moving, copying and the like, or a certain primitive is selected to modify attribute parameters of the primitive. The method has low efficiency and fussy operation, does not accord with the operation habit of a user, and cannot perform function optimization aiming at the service scene in the deepened design.

Disclosure of Invention

The invention provides a method and a device for editing a BIM (building information modeling) model of a prefabricated part, which are used for overcoming the defects of low BIM model modification efficiency and complex operation in the prior art and realizing simple and efficient BIM model editing.

The invention provides a method for editing a BIM (building information modeling) model of a prefabricated part, which comprises the following steps:

converting a three-dimensional BIM model into a two-dimensional data organization model, wherein a graphic primitive in the two-dimensional data organization model is represented by two-dimensional semantic description data;

generating a two-dimensional view based on the two-dimensional data organization model;

receiving a first input to the two-dimensional view;

and responding to the first input, editing the two-dimensional view, and correspondingly adjusting the three-dimensional BIM model.

According to the editing method of the BIM model of the prefabricated part, the three-dimensional BIM model is converted into the two-dimensional data organization model, and the editing method comprises the following steps:

generating two-dimensional semantic description data of the graphics primitives in the three-dimensional BIM model by using a two-three-dimensional mapping relation database;

generating a two-dimensional data organization relation of the three-dimensional BIM model by utilizing a building data mapping model for the graphic primitives in the three-dimensional BIM model;

and representing the two-dimensional data organization relation by using the two-dimensional semantic description data of the graphic primitive to obtain the two-dimensional data organization model.

According to the editing method of the BIM model of the prefabricated part, the generation step of the two-three-dimensional mapping relation database comprises the following steps:

performing reverse analysis on data based on the actual shape of a plurality of primitives in the three-dimensional BIM model to generate semantic description data of the plurality of primitives;

generating incidence relations of the primitives based on the semantic description data and the projection relations of the primitives in the space;

and generating linkage relation of the plurality of primitives based on the association relation.

According to the editing method of the BIM model of the prefabricated part, provided by the invention, the reverse analysis of data is performed on the basis of the actual shapes of a plurality of primitives in the three-dimensional BIM model, and semantic description data of the plurality of primitives is generated, and the editing method comprises the following steps:

classifying the plurality of primitives based on the type characteristics of the plurality of primitives to generate type parameters of the primitives;

based on the shape characteristics of the primitive, carrying out shape description on the primitive to generate shape description parameters of the primitive;

generating semantic description data for the plurality of primitives based on the type parameters and the shape description parameters.

According to the editing method of the BIM model of the prefabricated part, the semantic description data of the plurality of graphic elements is generated based on the type parameters and the shape description parameters, and the editing method comprises the following steps:

performing semantic description on the type parameters and the shape description parameters to obtain first semantic description information, wherein the first semantic description information comprises geometric features and coordinate features;

removing the duplicate of the first semantic description information with the same geometric characteristics to obtain second semantic description information;

and converting the second semantic description information into specific semantic data and metadata to generate the semantic description data.

According to the editing method of the BIM model of the prefabricated part, the generating step of the coordinate characteristics comprises the following steps:

analyzing to obtain a first coordinate of the primitive in the sub-component under a global coordinate system corresponding to the three-dimensional BIM model;

carrying out coordinate normalization processing on the primitive, and converting the first coordinate into a second coordinate in a local coordinate system corresponding to the sub-component;

and converting the second coordinate into the projection expression of the primitive on the corresponding projection surface according to the projection surface of the primitive in the space, and generating the coordinate feature.

According to the editing method of the BIM model of the prefabricated part, the generation step of the data mapping model comprises the following steps:

classifying the building components based on the types of the building components to obtain the primitives under various types;

and generating the data mapping model based on the data organization relation between the primitives.

According to the editing method of the BIM model of the prefabricated part, provided by the invention, the graphic element comprises the following steps: the member geometry, rebar shape, and attachment of the sub-members.

and converting the three-dimensional BIM model into a two-dimensional data organization model under the condition that the primitives in the three-dimensional BIM model are determined to be interfered.

According to the invention, the method for editing the BIM model of the prefabricated part, which receives the first input of the two-dimensional view, comprises the following steps:

receiving a first input to the two-dimensional view if it is determined that the primitives in the two-dimensional view interfere.

According to the editing method of the BIM model of the prefabricated part, provided by the invention, the graphic elements generate interference, and the editing method comprises the following steps:

interference occurs between the reinforcing steel bars;

alternatively, interference between the accessory member and the accessory member occurs;

or, interference occurs between the reinforcing bars and the auxiliary members;

or, interference occurs between the member geometry of the sub-member and the rebar;

alternatively, interference occurs between the component geometry of the sub-components and the accessory components.

when the primitive needs to be measured and/or modified, receiving a second input of a user;

in response to the second input, converting the three-dimensional BIM model to a two-dimensional data organization model;

alternatively, the receiving a first input to the two-dimensional view comprises: and receiving a first input of a user to the two-dimensional view under the condition of adjusting the target primitive row.

According to the editing method of the BIM model of the prefabricated part, the response to the first input, the two-dimensional view is edited, and the three-dimensional BIM model is correspondingly adjusted, and the editing method comprises the following steps:

editing the two-dimensional view in response to the first input;

adjusting the two-dimensional data organization model based on the edited two-dimensional view;

and correspondingly adjusting the three-dimensional BIM model based on the adjusted two-dimensional data organization model.

The present invention also provides an editing apparatus for a BIM model of a prefabricated part, including:

the first processing module is used for converting the three-dimensional BIM model into a two-dimensional data organization model, and the graphic primitives in the two-dimensional data organization model are represented by two-dimensional semantic description data;

the second processing module is used for generating a two-dimensional view based on the two-dimensional data organization model;

a first obtaining module for receiving a first input to the two-dimensional view;

and the third processing module is used for responding to the first input, editing the two-dimensional view and correspondingly adjusting the three-dimensional BIM model.

According to the editing apparatus for the BIM model of the prefabricated part provided by the invention, the first processing module is further configured to:

and expressing the two-dimensional data organization relationship by using the two-dimensional semantic description data of the primitive and the position information of the primitive to obtain the two-dimensional data organization model.

According to the editing apparatus for the BIM model of the prefabricated part provided by the invention, the first obtaining module is further configured to:

According to the editing apparatus for the BIM model of the prefabricated part provided by the invention, the third processing module is further configured to:

editing the two-dimensional view in response to the first input;

The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps of the method for editing the BIM model of the prefabricated part.

The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method of editing a BIM model of prefabricated parts as described in any of the above.

The invention also provides a computer program product comprising a computer program which, when executed by a processor, carries out the steps of the method for editing a BIM model of a prefabricated part as defined in any one of the preceding claims.

According to the editing method and the editing device for the BIM of the prefabricated part, provided by the invention, the three-dimensional BIM is converted into the two-dimensional view, and the three-dimensional BIM can be correspondingly adjusted by adjusting the two-dimensional view, so that the two-dimensional linkage between the two dimensions is realized, the operation steps of a user are simplified, the modification efficiency of the user on the BIM is improved, and the operation experience of the user is optimized.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be 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 some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic flow chart of a method for editing a BIM model of a prefabricated part according to the present invention;

FIG. 2 is a second schematic flow chart of a method for editing a BIM model of a prefabricated part according to the present invention;

FIG. 3 is a schematic diagram of a method for editing a BIM model of prefabricated parts according to the present invention;

FIG. 4 is a second schematic diagram of a method for editing a BIM model of a prefabricated part according to the present invention;

FIG. 5 is a schematic structural diagram of an editing apparatus for a BIM model of prefabricated parts according to the present invention;

FIG. 6 is a schematic structural diagram of an electronic device provided by the present invention;

FIG. 7 is one of interface diagrams of a method for editing a BIM model of a prefabricated part according to the present invention;

FIG. 8 is a second interface diagram of the editing method of the BIM model of the prefabricated parts according to the present invention;

FIG. 9 is a third interface diagram of a method for editing a BIM model of prefabricated parts according to the present invention;

FIG. 10 is a fourth interface diagram of the editing method of the BIM model of the prefabricated part according to the present invention;

fig. 11 is a fifth interface diagram of the method for editing the BIM model of the prefabricated part according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, 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.

The method for editing the BIM model of the prefabricated parts according to the present invention will be described with reference to fig. 1 to 2.

The main execution body of the editing method of the BIM model of the prefabricated part can be a terminal of a user, including but not limited to a mobile phone, a tablet computer, a desktop computer and the like of the user.

The method for editing the BIM model of the prefabricated part can be applied to editing the prefabricated part in the process of assembling the BIM model.

The prefabricated building is a whole building which is formed by transferring a large amount of field operation work in the traditional construction mode to a factory, transporting prefabricated part accessories processed and manufactured in the factory to a building construction site, assembling and installing on the site and casting in situ. The BIM model refers to a three-dimensional model for building virtual construction engineering by using software.

The prefabricated components are prefabricated wall bodies, prefabricated floor slabs, prefabricated beams or prefabricated columns and other components which are prefabricated in factories or on the site based on design specifications, and specifically can be composite wall bodies, composite floor slabs and the like.

As shown in fig. 1, the method for editing the BIM model of the prefabricated part includes: step 110, step 120, step 130 and step 140.

110, converting the three-dimensional BIM model into a two-dimensional data organization model, wherein the graphic elements in the two-dimensional data organization model are represented by two-dimensional semantic description data;

in this step, three-dimensional primitives in the three-dimensional data organization model are converted into two-dimensional primitives represented by two-dimensional semantic description data.

The two-dimensional semantic description data is semantic description data of the three-dimensional BIM model on a two-dimensional plane, and is two-dimensional expression of the three-dimensional BIM model.

In the actual execution process, the BIM model under a certain project is analyzed, so that the three-dimensional BIM model can be converted into a two-dimensional data organization model.

The inventor finds that the existing interaction mode for editing the three-dimensional model has the following defects in the research and development process: 1) the positioning is not easy, and the operation habit of a designer is not met; 2) the requirement on the performance of a computer is high, and the phenomena of blocking and the like easily occur when the performance is not met, so that the deepened design efficiency is seriously influenced; 3) data can be synchronized to the three-dimensional model only from a two-dimensional design interface in a one-way mode, and the application range is narrow.

According to step 110 in this embodiment of the present application, a three-dimensional BIM model may be converted into a two-dimensional data organization model to implement bidirectional conversion between three dimensions and two dimensions; in addition, the three-dimensional BIM model is converted into the two-dimensional data organization model, so that the BIM model is more intuitive to present and is beneficial to the user to check.

In some embodiments, the primitives include: the member geometry, rebar shape, and attachment of the sub-members.

The members in the three-dimensional BIM model can be classified into member types such as walls, beams, columns and plates by classifying the members based on attributes.

Each component type comprises different sub-components.

The sub-component level comprises the steel bars and the auxiliary components thereof.

For example, the laminated wall member further comprises, below the level: wall body, hidden column, coupling beam and window lower wall.

Wherein, include again under the wall body subcomponent level: longitudinal reinforcing bars, horizontal reinforcing bars, and reinforcing bars in the longitudinal direction of the wall, and,

and accessory components such as a wire box, a sleeve and a hanger.

It will be appreciated that the sub-members created by the bars and their appurtenant members in different combinations also have different shape profiles.

In this embodiment, the component geometry of the sub-component is the profile information of the sub-component.

In some embodiments, the member geometry, the steel bar shape and the auxiliary members of the sub-members can be described by the two-dimensional semantic data, and the generated two-dimensional semantic description data is stored in a local server or a cloud and can be called when needed.

Step 110 is described below with reference to an exemplary embodiment.

In some embodiments, step 110 comprises:

generating two-dimensional semantic description data of the primitives in the three-dimensional BIM by using a two-three-dimensional mapping relation database;

and expressing the two-dimensional data organization relation by using the two-dimensional semantic description data of the graphic primitive to obtain a two-dimensional data organization model.

In this embodiment, the two-dimensional and three-dimensional mapping relationship database includes two-dimensional semantic description data corresponding to each primitive.

And each graphic primitive in the three-dimensional BIM of the prefabricated part can be converted into two-dimensional semantic description data for expression by calling the two-dimensional and three-dimensional mapping relation database.

For example, the bent reinforcing bar shown in fig. 4 may be expressed as: the shape of the steel bar is a, a 1-600, b 1-135, a 2-122, b 2-135, a 3-1200, b 3-135, a 4-122, b 4-135, and a 5-600.

The building data mapping model comprises a data organization relation among all the primitives.

The building data mapping model can be used for constructing data organization relations of all graphic elements under the sub-component level of the three-dimensional BIM model of the prefabricated component.

For example, for a folding wall, the data organization relationship under the hierarchy is:

-superimposed wall

-wall body

-longitudinal reinforcement

-horizontal transverse bar

-wall longitudinal reinforcement

-wire box

-bushing

Hanging piece

-hidden column

-connecting beam

-top reinforcement

Waist tendon

-bottom reinforcement

-draw hook

-stirrup

-bushing

-a window lower wall.

The three-dimensional data organization relationship can be converted into the two-dimensional data organization relationship by replacing the three-dimensional description data of the graphic primitives in the building data mapping model with the two-dimensional semantic description data.

Through the steps, the mapping relation between the three-dimensional graphic elements in the three-dimensional BIM model of the prefabricated part and the two-dimensional graphic elements in the two-dimensional data organization model can be established.

By using the mapping relation, the three-dimensional BIM model of the prefabricated part can be converted into a two-dimensional data organization model.

In the step, the two-dimensional semantic description data is used for describing the primitives and the two-dimensional semantic description data is organized into the data organization relation between the primitives, so that the three-dimensional BIM model is converted into the two-dimensional data organization model, the mapping relation between the three-dimensional BIM model and the two-dimensional data organization model is established, the two-way interaction between the three-dimensional BIM model and the two-dimensional data organization model is realized, the method is suitable for all BIM components, and the application range is wide.

Step 120, generating a two-dimensional view based on the two-dimensional data organization model;

in this step, the two-dimensional view is the representation of the BIM model of the prefabricated part on the two-dimensional plane.

A two-dimensional data organization model describing the member geometry, the steel bar shape and the accessory members of the sub-members by the two-dimensional semantic description data is generated in step 110, and the two-dimensional data organization model is converted into an expression on a two-dimensional drawing, so that a two-dimensional view can be generated.

It should be noted that the two-dimensional view may preferably be automatically generated by the terminal, for example, the terminal automatically generates the two-dimensional view based on a data packet of the two-dimensional data organization model by using a two-dimensional graph drawing technology. Or may be manually input by a user, for example, the user may draw the two-dimensional data organization model into a corresponding two-dimensional view on a two-dimensional canvas based on the two-dimensional data organization model, which is not limited in the present invention.

It should be noted that, the display contents in the two-dimensional view correspond to the three-dimensional BIM model of the prefabricated part one to one.

Step 130, receiving a first input to the two-dimensional view;

in this step, the first input is used to edit the two-dimensional view.

It should be noted that the first input may be represented as a manual input by the user;

or it may be presented as a terminal automatic input, i.e. the terminal automatically edits the two-dimensional view based on the trigger condition.

For example, under the two-dimensional view, the length value of the steel bar is modified; or moving the steel bar to a target position at a target angle or a target distance; or automatically adjusting the position relation between the disturbed reinforcing steel bars when the reinforcing steel bars are disturbed.

Wherein, in the case that the first input is a manual input of the user, the first input may be expressed in at least one of the following ways:

first, the first input may be represented as a screen touch input, including but not limited to a click input, a slide input, a press input, and the like.

In this embodiment, receiving the first input of the user may be expressed as receiving the first input of the user in a display area of a display screen of the terminal.

In order to reduce the misoperation rate of the user, the action area of the first input can be limited to a specific area, such as the lower middle area of the display area of the terminal display screen; or the target control is displayed on the interface, and the first input can be realized by touching the target control.

Second, the first input may be represented as a physical key input.

For example, by setting physical keys or an operation handle, such as a keyboard or a mouse, etc., the first input is realized through the physical keys.

Third, the first input may be represented as a voice input.

In this embodiment, the terminal may transmit edit instruction information to the controller upon receiving a voice such as "modify the coordinates of the reinforcing bar 1 to a preset value".

Fourth, the first input may appear as a text input.

In this embodiment, the receiving of the first input of the user may be represented as receiving text information input by the user in a display area of a display screen of the terminal, and performing semantic analysis on the terminal.

Of course, in other embodiments, the first input may also be represented in other forms, including but not limited to character input, which may be determined according to actual needs, and this is not limited in the embodiments of the present invention.

Step 140, in response to the first input, editing the two-dimensional view and correspondingly adjusting the three-dimensional BIM model.

In this step, editing the two-dimensional view includes, but is not limited to, the following expressions:

1) copying, deleting, moving, rotating and the like aiming at the graphic elements;

2) undo and redo for operations;

3) copy, create, move, etc. for multiple rebar box selections.

It should be noted that the two-dimensional view and the three-dimensional BIM model have a one-to-one correspondence relationship, and when the shape or position of any primitive in the two-dimensional view is adjusted, the shape or position of the corresponding primitive in the three-dimensional BIM model also changes correspondingly.

In the step, the graphics primitives can be quickly and accurately positioned through the two-dimensional view, and the operation habits of users are met; the three-dimensional BIM model can be adjusted by editing the two-dimensional view, the editing efficiency is high, and the requirement on the performance of a computer is low.

The implementation of step 140 is described below by way of specific examples.

In some embodiments, step 140 comprises:

editing the two-dimensional view in response to the first input;

In this embodiment, the terminal edits the two-dimensional view such as copy, delete, move, rotate, undo, and redo in response to the first input.

By editing the two-dimensional view, the two-dimensional semantic description data corresponding to the two-dimensional view can be correspondingly adjusted, so that the two-dimensional data organization model associated with the two-dimensional semantic description data is modified.

Based on the mapping relation between the two-dimensional data organization model and the three-dimensional BIM model, the three-dimensional BIM model correspondingly changes under the condition that the two-dimensional data organization model changes.

The above steps will be explained below by taking editing of the reinforcing bars in the wall stud nodes as an example.

As shown in fig. 2, in an actual implementation process, a two-dimensional mapping relationship database corresponding to a primitive in a single component and a building data mapping model corresponding to different component types may be pre-constructed.

In some cases, in the process of editing the three-dimensional model of the wall column node by a designer, the terminal may determine whether interference occurs between the primitives of the three-dimensional model, specifically, it may automatically determine through a preset rule, or may determine through manual determination methods such as a standard method and a calculation method, for example, it is necessary to determine whether interference occurs between the steel bars (part of the steel bars in a square) in the wall column node in the real-time prefabricated component BIM model shown in fig. 8, and in the case of interference, the terminal automatically analyzes the components and the information in the components in the three-dimensional BIM model to summarize the relative positions of the various primitives and the primitives in the BIM model, such as the relative position of the steel bars, and reversely generate the building data mapping model.

Subsequently, using a two-dimensional graph drawing technique, two-dimensional views in each direction, such as a front view, a left-right view, and an up-down view of the superimposed wall of the node shown in fig. 7, are drawn in a two-dimensional canvas.

And simultaneously displaying all two-dimensional views of the node in the two-dimensional canvas, and supporting that the relative position of the reinforcing steel bar from the edge of the node or other reinforcing steel bars is measured in any two-dimensional view of the node. And the display content in the two-dimensional view corresponds to the three-dimensional BIM model one to one.

And judging the distance between the steel bar primitives, and if the distance between the steel bars does not meet the minimum net distance of the steel bars, and if the distance between the steel bars 1001 and the adjacent steel bars is smaller than the minimum net distance as shown in fig. 10, automatically filling the overlapped steel bars 1001 with red color by the terminal.

The relative position of the steel bar 1001 which does not meet the clear distance requirement is modified, and the data of the steel bar 1001 is automatically synchronized into the building data mapping model, so that the corresponding part in the three-dimensional BIM model is modified together.

And under the condition that the modified steel bar is not overlapped with other graphic elements, restoring the filling color of the steel bar to the default steel bar color, as shown in fig. 11.

And finishing modification and storing the BIM regenerated by the modified data mapping model, thereby realizing the linkage of the two-dimensional canvas editing and the three-dimensional model data.

In the embodiment, the functions of model analysis, two-dimensional view creation, steel bar distance detection and the like are integrated, so that a user can be helped to quickly finish steel bar editing and collision inspection; and regenerating a three-dimensional BIM model based on the modified building data mapping model, so that the linkage of two-dimensional canvas editing and three-dimensional model data can be realized.

In other cases, even though there is no interference between the primitives, the target primitives need to be actively adjusted based on project requirements, for example, the length of a certain steel bar in the prefabricated part BIM model shown in fig. 8 needs to be measured and/or modified, or a certain steel bar needs to be moved to a specified position.

In the prior art, a user often directly drags or moves a steel bar in a three-dimensional BIM model, the method is difficult to drag or move the steel bar according to a fixed angle, and the steel bar after moving or dragging the steel bar and an original steel bar are not on the same steel bar plane. Therefore, the user needs to continuously adjust the angle of the three-dimensional view in the editing process, and the operation is cumbersome and inefficient.

In the application, when the length of a certain steel bar in the three-dimensional BIM model needs to be modified or a certain steel bar needs to be moved to a specified position, the pre-constructed two-dimensional mapping relation database and the building data mapping models corresponding to different component types can be directly utilized to automatically analyze components and information in the components in the three-dimensional BIM model, and the building data mapping model is reversely generated so as to analyze the three-dimensional BIM model into the two-dimensional model.

By using a two-dimensional graph drawing technology, two-dimensional views in each direction, such as a front view, a left-right view, and an up-down view of each member in the node shown in fig. 7, are drawn in a two-dimensional canvas.

As shown in fig. 9, the length of the reinforcing bars is modified in any view on the two-dimensional view, or the reinforcing bars are moved to the target position at the target angle or target distance.

Under the condition of editing a certain two-dimensional view, based on the linkage relation of each view among the two-dimensional views, other two-dimensional views are automatically updated according to the editing result without repeatedly adjusting the angle of the view, and the method has the advantages of simplicity and convenience in operation in the two-dimensional view and clearness and intuition in the three-dimensional view.

And meanwhile, the BIM model regenerated by the modified data mapping model is modified and stored, so that the linkage of the two-dimensional canvas editing and the three-dimensional model data is realized.

According to the editing method of the BIM model of the prefabricated part, provided by the embodiment of the invention, the three-dimensional BIM model is converted into the two-dimensional view, and the three-dimensional BIM model can be correspondingly adjusted by adjusting the two-dimensional view, so that the two-dimensional linkage between the two dimensions is realized, the operation steps of a user are simplified, the modification efficiency of the user on the BIM model is improved, and the operation experience of the user is optimized.

The following describes the triggering mode of the present invention in four implementation perspectives.

Firstly, under the condition that the primitives are interfered, a three-dimensional BIM model is automatically triggered to be converted into a two-dimensional data organization model under a three-dimensional mode.

In some embodiments, step 110 further comprises:

and converting the three-dimensional BIM model into a two-dimensional data organization model under the condition of determining that the primitives in the three-dimensional BIM model are interfered.

The occurrence of the primitive interference can be represented as: collision occurs between the graphic elements, or the distance between the graphic elements is out of the standard range.

In the actual execution process, under the condition that the primitive is judged to be interfered, highlighting the primitive which is interfered, for example, marking the primitive as green.

In some embodiments, the primitives are disturbed, including:

interference occurs between the reinforcing steel bars;

or, interference occurs between the reinforcing bars and the auxiliary members;

For example, a collision occurs between reinforcement a and reinforcement B; or the distance between the steel bar C and the accessory component is smaller than the standard range; or that the accessory member is not within the member geometry of the sub-member in which it is located, etc.

In this embodiment, before the three-dimensional BIM model is converted into the two-dimensional data organization model, it is first determined whether a primitive in the three-dimensional BIM model is interfered, and the three-dimensional BIM model is converted into the two-dimensional data organization model under the condition that the interference is determined, so that the three-dimensional BIM model is adjusted through the two-dimensional view, and the editing operation is simplified.

In other embodiments, in case that it is determined that no interference occurs, the three-dimensional BIM model may be kept unchanged to reduce the calculation amount of the terminal.

And secondly, under the condition that the primitives generate interference, automatically triggering the modification of the two-dimensional view under the two-dimensional mode.

In some embodiments, step 130 comprises:

in an instance in which it is determined that a primitive in a two-dimensional view is disturbed, a first input to the two-dimensional view is received.

In this embodiment, a two-dimensional view has been generated by

steps

110 and 120.

Before editing the two-dimensional view, whether the primitives in the two-dimensional view are interfered is judged, and under the condition that the interference is determined, the two-dimensional view is edited so as to adjust the position distance between the primitives to a standard range.

In the actual implementation process, the primitives with interference can also be highlighted in the two-dimensional view.

In other embodiments, in the event that it is determined that no primitive in the two-dimensional view is disturbed, then only the two-dimensional view may be displayed without editing the two-dimensional view.

It should be noted that, in the case that it is determined that the primitive in the two-dimensional view is interfered, receiving the first input to the two-dimensional view may be represented as receiving the first input to the two-dimensional view by the user.

For example, when the user views the two-dimensional view and finds that the steel bar a and the steel bar B collide with each other, the user modifies the coordinates of the steel bar a or the steel bar B through an input method such as a mouse or a keyboard.

For another example, the user clicks the "check" control on the two-dimensional view, the terminal automatically determines that the steel bar a and the steel bar B collide with each other, and the user modifies the coordinates of the steel bar a or the steel bar B through an input method such as a mouse or a keyboard.

Or, in the case that it is determined that the primitive in the two-dimensional view interferes, receiving the first input to the two-dimensional view may also be represented as receiving an automatic input to the two-dimensional view by the terminal.

For example, after the two-dimensional view is generated, the terminal automatically determines that the steel bar a and the steel bar B collide with each other, and then automatically modifies the coordinates of the steel bar a or the steel bar B to adjust the distance between the steel bar a and the steel bar B to be within the standard range.

According to the editing method of the BIM model of the prefabricated part, provided by the embodiment of the invention, linkage between two dimensions and three dimensions is realized through different triggering modes and input modes, and the editing method has higher flexibility and universality.

And thirdly, under the condition that a user actively adjusts the target graphic primitive, the three-dimensional BIM model is triggered to be converted into a two-dimensional data organization model in a three-dimensional mode.

In some embodiments, converting the three-dimensional BIM model to a two-dimensional data organization model includes:

in response to the second input, the three-dimensional BIM model is converted to a two-dimensional data organization model.

And the second input is used for converting the three-dimensional BIM model into a two-dimensional data organization model by the user.

The second input has the same expression form as the first input, and may be touch input, physical key input, voice input or other inputs, which are not described herein.

In the actual execution process, a user can click a conversion control on a software interface to convert the three-dimensional BIM model into the two-dimensional data organization model.

Adjusting the target primitive may be represented by modifying a length, a bend angle, and a position of the moving target primitive, etc.

It can be understood that in the actual implementation process, there are situations where no interference occurs between the rebars, but the user needs to modify the length of the target rebar, or move the target rebar to the target position, or needs to mark the target rebar accurately.

In this embodiment, the three-dimensional BIM model may be converted into a two-dimensional data organization model to facilitate adjustment of the target primitive under the two-dimensional view. In addition, compared with a three-dimensional model, the two-dimensional view has the advantages that the size of the system label is more visual and definite, and a designer can conveniently and accurately design.

And fourthly, under the condition that a user actively modifies the target primitive, triggering the marking and/or modification of the two-dimensional view in the two-dimensional mode.

In some embodiments, receiving a first input to a two-dimensional view comprises: in the case of an adjustment to a target primitive row, a first input of a user to a two-dimensional view is received.

In this embodiment, the three-dimensional BIM model may be converted into a two-dimensional data organization model, and the length, angle, position information, and the like of each primitive may be viewed in a two-dimensional view.

Under the condition that the target primitive needs to be adjusted, if the target reinforcing steel bar needs to be moved to the target position, a user only needs to move the target reinforcing steel bar to the position of the target position under one view of the two-dimensional views, and other views can correspondingly adjust the position of the target reinforcing steel bar under each view, so that the target reinforcing steel bar is moved to the target position.

According to the embodiment, the target graphic primitive is marked or adjusted under the two-dimensional view, so that the operation is simple and convenient, and the accuracy is high.

The following describes steps of generating a two-dimensional mapping relationship database and a data mapping model by using specific embodiments.

And a step of generating a first three-dimensional mapping relation database and a second three-dimensional mapping relation database.

In some embodiments, the step of generating a two-three dimensional mapping relationship database comprises:

performing reverse analysis on data based on the actual shape of the multiple primitives in the three-dimensional BIM model to generate semantic description data of the multiple primitives;

generating incidence relations of a plurality of primitives based on the projection relations of the semantic description data and the primitives in the space;

In the embodiment, a two-three-dimensional mapping relation database is mainly established for the relation of 3 types of data such as member geometry, steel bar shape, accessory members and the like.

For the reinforcing steel bar, the reverse analysis of the data is carried out based on the actual shape of the plurality of primitives in the three-dimensional BIM model, and the reverse analysis of the data is carried out based on the shapes such as a ring shape, an opening at one end and a multi-segment broken line.

The association relationship is used for representing the association relationship between the graphic elements, such as the relative position relationship between the graphic elements.

For example, the lateral distance between the projections of rebar a and rebar B in space is x.

And further constructing a linkage relation among the graphic elements with the association relation.

For example, for two reinforcing bars needing to be linked with each other in two faces, an association relationship needs to be established.

The linkage relation is a dynamic association relation among the graphic elements.

For example, longitudinal rebar movement translates horizontal transverse rebar movement.

It is understood that the association relationship includes both the linkage relationship and the non-linkage relationship. For example, in the case of moving the steel bar a, the steel bar B is correspondingly displaced; or in the case of moving the reinforcement a, the position of the reinforcement C remains unchanged.

In the embodiment, semantic description data is defined according to the shape of the primitive, and the association relationship and the linkage relationship between the primitives are constructed based on the projection relationship of the primitives in the space, so that the properties of the primitives and the position relationship between the primitives are described in a two-dimensional manner. In some embodiments, performing inverse parsing of data based on actual shapes of a plurality of primitives in a three-dimensional BIM model, generating semantic description data for the plurality of primitives, including:

carrying out shape description on the primitive based on the shape characteristics of the primitive to generate shape description parameters of the primitive;

semantic description data for the plurality of primitives is generated based on the type parameters and the shape description parameters.

In this embodiment, the geometry of the member, the shape of the reinforcing bar, and the corresponding analysis method of the attachment member are the same, and the following will specifically describe the generation procedure of the two three-dimensional mapping relationship databases by taking a reinforcing bar analysis method as an example.

It can be understood that the types and shapes of the graphics primitives are complex and changeable, taking a steel bar as an example, one steel bar comprises a plurality of shape parameters such as a horizontal section, a bending section, a length, an angle and the like, and different parameters form different shapes of the steel bar.

In the actual implementation process, all the related reinforcing steel bars are enumerated, and are abstracted into different types of reinforcing steel bars based on the shape parameters of the reinforcing steel bars so as to classify the reinforcing steel bars to obtain a plurality of different types of reinforcing steel bars, and the type parameters are used for distinguishing the reinforcing steel bars of different types.

For each type of reinforcing steel bar, the reinforcing steel bar is subjected to attribute and geometric feature description through specific shape description parameters respectively so as to be distinguished from other reinforcing steel bars in the same type.

For example, as shown in fig. 3, the bent steel bar is designated as a steel bar with type parameter a, and the shape description parameter is defined as: a1, b1, a2, b2, a3, b3, a4, b4 and a5 share 9 parameters, wherein a1-a5 are length parameters, and b1-b4 are angle parameters.

Based on the type parameters and the shape description parameters, the shape characteristics and the attribute characteristics of the bent reinforcing steel bar can be completely described.

Based on the above description, the semantic description data of the bent steel bar shown in fig. 4 can be expressed as: the shape of the steel bar is a, a 1-600, b 1-135, a 2-122, b 2-135, a 3-1200, b 3-135, a 4-122, b 4-135, and a 5-600.

In some embodiments, generating semantic description data for the plurality of primitives based on the type parameters and the shape description parameters comprises:

removing duplication of first semantic description information with the same geometric characteristics to obtain second semantic description information;

and converting the second semantic description information into specific semantic data and metadata to generate semantic description data.

The semantic description includes the building business meaning, and has certain readability.

Metadata is data describing data, and includes: data character length, number of byte bits read, offset, etc.

The geometric features are used for representing type parameters and shape description parameters of the primitives, and the coordinate features are used for representing position information of the primitives.

In this embodiment, the type parameter and the shape description parameter are semantically described, that is, the meaning corresponding to each type of primitive is described through building semantics.

It should be noted that, in the obtained first semantic description information, there may be a case where the geometric features are the same but the coordinate features are different.

And carrying out duplication removal on the first semantic description information with the same geometric characteristics to obtain second semantic description information with the same geometric characteristics and different coordinate characteristics so as to remove redundant data and further compress the volume of the data.

And then binary conversion is carried out on the second semantic description information to obtain specific semantic data and metadata, so that the data is further compressed to control the volume of the data, and network transmission is facilitated.

In the embodiment, the data volume can be effectively compressed by performing semantic description on the primitive and performing deduplication on the first semantic description information with the same geometric characteristics, so that the data volume is remarkably reduced, and the data transmission performance and the terminal operation efficiency are improved.

In some embodiments, the generating of the coordinate features comprises:

analyzing to obtain a first coordinate of a primitive in the sub-component under a global coordinate system corresponding to the three-dimensional BIM model;

carrying out coordinate normalization processing on the primitive, and converting the first coordinate into a second coordinate under a local coordinate system corresponding to the sub-component;

and converting the second coordinate into the projection expression of the graphic element on the corresponding projection surface according to the projection surface of the graphic element in the space, and generating the coordinate characteristic.

In this embodiment, the global coordinate system is a coordinate system with a specific item as a reference coordinate system.

The first coordinate is the coordinate of the primitive in the coordinate system with a specific item as the reference coordinate system.

The local coordinate system is a coordinate system of a reference coordinate system of a certain sub-component under the specific item.

The second coordinate is the coordinate of the primitive in the coordinate system with a certain sub-component as the reference coordinate system.

In the actual execution process, the primitives in the three-dimensional BIM model sub-component are analyzed to obtain a first coordinate.

And converting the first coordinate into a second coordinate by taking the sub-component where the primitive is positioned as a reference coordinate system.

It should be noted that the currently obtained second coordinate is still a three-dimensional coordinate.

And then, according to the projection surface of the primitive in the space, converting the three-dimensional coordinates corresponding to the primitive into two-dimensional coordinates generated by projection of the three-dimensional coordinates on the corresponding projection surface, and taking the two-dimensional coordinates as the coordinate characteristics of the primitive.

In the embodiment, the global coordinate system is converted into the local coordinate system to generate the coordinate characteristics of the primitives, so that the data volume can be effectively reduced, and the user can conveniently view and edit the data.

According to the editing method of the BIM model of the prefabricated part, provided by the embodiment of the invention, the two-dimensional mapping relation database is constructed, so that the graphics primitives in the three-dimensional BIM model can be described by using the two-dimensional semantic description data, the two-dimensional semantic description data can be conveniently reorganized into the building data mapping model to generate the two-dimensional data organization model, and the data volume is effectively reduced.

And secondly, generating a building data mapping model.

In some embodiments, the generating of the building data mapping model comprises:

classifying the building components based on the types of the building components to obtain various primitives;

and generating a building data mapping model based on the data organization relation among the primitives.

In this embodiment, based on the type of building element, the building element is divided into: wall, beam, column and plate.

And then, further carrying out secondary classification on each large component to obtain different sub-components under each large component level, wherein each sub-component level also comprises the steel bars and the accessory components, and the data organization relation among all the pixels.

For example, the wall body is further divided into: wall body, hidden post, even roof beam and window lower wall.

The wall body is further divided into: longitudinal steel bars, horizontal transverse steel bars, wall long-direction steel bars, wire boxes, sleeves and hanging pieces.

Wherein, the wall body is a sub-component; the longitudinal steel bars, the horizontal transverse bars and the wall long-direction steel bars are steel bar components, and the wire box, the sleeve and the hanging piece are accessory components; the reinforcing steel bar member and the auxiliary member are mutually associated to form the member geometry of the wall body together.

The coupling beam is further divided into: top reinforcing bar, waist muscle, bottom reinforcing bar, drag hook, stirrup and sleeve pipe.

Similarly, the coupling beam is a sub-component under the wall body; the top steel bar, the waist steel bar and the bottom steel bar are steel bar components, and the draw hook, the stirrup and the sleeve are auxiliary components; the reinforcing steel bar member and the auxiliary member are mutually associated to form the member geometry of the coupling beam together.

After the data organization relation between the graphic primitives in the BIM component is obtained through the data mapping model, the two-dimensional semantic description data obtained by utilizing the two-three-dimensional mapping relation database is filled in the data organization relation, and then the three-dimensional BIM model can be converted into a two-dimensional data organization model.

According to the editing method of the BIM model of the prefabricated part, provided by the embodiment of the invention, the information in the part and the part in the real-time BIM model is analyzed by constructing the data organization relationship among the primitives, so that the two-dimensional data mapping model is generated reversely, and the linkage between the two-dimensional canvas editing and the three-dimensional model data is favorably realized.

The present invention provides an apparatus for editing a BIM model of prefabricated parts, and the apparatus for editing a BIM model of prefabricated parts described below and the method for editing a BIM model of prefabricated parts described above may be referred to in correspondence with each other.

As shown in fig. 5, the apparatus for editing the BIM model of the prefabricated part includes: a first processing module 510, a second processing module 520, a first obtaining module 530, and a third processing module 540.

A first processing module 510, configured to convert the three-dimensional BIM model into a two-dimensional data organization model, where a primitive in the two-dimensional data organization model is represented by two-dimensional semantic description data;

a second processing module 520, configured to generate a two-dimensional view based on the two-dimensional data organization model;

a first obtaining module 530 for receiving a first input to the two-dimensional view;

and a third processing module 540, configured to edit the two-dimensional view in response to the first input, and correspondingly adjust the three-dimensional BIM model.

In some embodiments, the first processing module 510 is further configured to:

and expressing the two-dimensional data organization relationship by using the two-dimensional semantic description data of the pixels and the position information of the pixels to obtain a two-dimensional data organization model.

In some embodiments, the first processing module 510 is further configured to:

In some embodiments, the first obtaining module 530 is further configured to: in an instance in which it is determined that a primitive in a two-dimensional view is disturbed, a first input to the two-dimensional view is received.

In some embodiments, the apparatus further comprises:

the second acquisition module is used for receiving a second input of a user when the primitive needs to be measured and/or modified;

a first processing module 510, further configured to: in response to the second input, the three-dimensional BIM model is converted to a two-dimensional data organization model.

In some embodiments, the first obtaining module 530 is further configured to: in the case of an adjustment to a target primitive row, a first input of a user to a two-dimensional view is received. In some embodiments, the third processing module is further configured to:

editing the two-dimensional view in response to the first input;

According to the editing device for the BIM model of the prefabricated part, provided by the embodiment of the invention, the three-dimensional BIM model is converted into the two-dimensional view, and the three-dimensional BIM model can be correspondingly adjusted by adjusting the two-dimensional view, so that the two-dimensional linkage between the two dimensions is realized, the operation steps of a user are simplified, the modification efficiency of the user on the BIM model is improved, and the operation experience of the user is optimized.

Fig. 6 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 6: a processor (processor)610, a communication interface (communication interface)620, a memory (memory)630 and a communication bus 640, wherein the processor 610, the communication interface 620 and the memory 630 are communicated with each other via the communication bus 640. The processor 610 may invoke logic instructions in the memory 630 to perform a method of editing a BIM model of a prefabricated component, the method comprising: converting a three-dimensional BIM model into a two-dimensional data organization model, wherein a graphic primitive in the two-dimensional data organization model is represented by two-dimensional semantic description data; generating a two-dimensional view based on the two-dimensional data organization model; receiving a first input to the two-dimensional view; and responding to the first input, editing the two-dimensional view, and correspondingly adjusting the three-dimensional BIM model.

In addition, the logic instructions in the memory 630 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

In another aspect, the present invention also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform a method for editing a BIM model of a prefabricated part provided by the above methods, the method comprising: converting a three-dimensional BIM model into a two-dimensional data organization model, wherein a graphic primitive in the two-dimensional data organization model is represented by two-dimensional semantic description data; generating a two-dimensional view based on the two-dimensional data organization model; receiving a first input to the two-dimensional view; and responding to the first input, editing the two-dimensional view, and correspondingly adjusting the three-dimensional BIM model.

In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program, which when executed by a processor, implements a method for editing a BIM model of prefabricated parts provided as described above, the method including: converting a three-dimensional BIM model into a two-dimensional data organization model, wherein a graphic primitive in the two-dimensional data organization model is represented by two-dimensional semantic description data; generating a two-dimensional view based on the two-dimensional data organization model; receiving a first input to the two-dimensional view; and responding to the first input, editing the two-dimensional view, and correspondingly adjusting the three-dimensional BIM model.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A method for editing a BIM model of a prefabricated part, comprising:

receiving a first input to the two-dimensional view;

2. The method for editing a BIM model of prefabricated parts according to claim 1, wherein the converting a three-dimensional BIM model into a two-dimensional data organization model comprises:

3. The editing method of the BIM model of prefabricated parts according to claim 2, wherein the generating of the two-dimensional mapping relationship database includes:

4. The method for editing a BIM model of a prefabricated part according to claim 3, wherein the performing reverse analysis of data based on the actual shape of a plurality of primitives in the three-dimensional BIM model to generate semantic description data of the plurality of primitives includes:

5. The method for editing a BIM model of prefabricated parts according to claim 4, wherein the generating semantic description data of the plurality of primitives based on the type parameters and the shape description parameters comprises:

6. The editing method of the BIM model of prefabricated parts according to claim 5, wherein the generating of the coordinate feature comprises:

7. The method for editing the BIM model of prefabricated parts according to claim 2, wherein the generating of the building data mapping model includes:

and generating the building data mapping model based on the data organization relation among the graphic elements.

8. The editing method of the BIM model of prefabricated parts according to claim 1, wherein the primitive includes: the member geometry, rebar shape, and attachment of the sub-members.

9. The editing method of the BIM model of prefabricated parts according to claim 1,

the method for converting the three-dimensional BIM model into the two-dimensional data organization model comprises the following steps: converting the three-dimensional BIM model into a two-dimensional data organization model under the condition that the primitives in the three-dimensional BIM model are determined to be interfered;

alternatively, the receiving a first input to the two-dimensional view comprises: receiving a first input to the two-dimensional view if it is determined that the primitives in the two-dimensional view interfere;

wherein the primitive is disturbed, including:

interference occurs between the reinforcing steel bars;

or, interference occurs between the reinforcing bars and the auxiliary members;

10. The editing method of the BIM model of prefabricated parts according to claim 1,

the method for converting the three-dimensional BIM model into the two-dimensional data organization model comprises the following steps: when the primitive needs to be measured and/or modified, receiving a second input of a user;

11. The method for editing a BIM model of prefabricated parts according to any one of claims 1 to 10, wherein said editing the two-dimensional view and correspondingly adjusting the three-dimensional BIM model in response to the first input comprises:

editing the two-dimensional view in response to the first input;

12. An apparatus for editing a BIM model of a prefabricated part, comprising: