CN112434364A - IFC-based construction project early-stage digital delivery and review system and method - Google Patents
IFC-based construction project early-stage digital delivery and review system and method Download PDFInfo
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Abstract
The invention discloses an IFC-based construction project early-stage digital delivery and review system and method, which comprises a model module, a special analysis module and a three-dimensional review module; when the system is used, the management department, the construction unit, the design unit and the evaluation unit use the system to evaluate projects in the early stage; then, a construction unit newly constructs projects in the system, appoints a management department and a design unit, and reviews the design scheme; a design unit submits a design scheme in the system, and a review suggestion is solved by uploading an IFC-based early-stage scheme model; and finally, the construction unit, the review unit and the management department review the design scheme in the system, propose a review comment for a certain part of the building information model and attach a corresponding three-dimensional viewpoint, and the design unit can review the review comment and modify the scheme in the system and reply the review comment by uploading the updated building information model. According to the invention, through the building information model, each unit can visually know the appearance and technical standard of the scheme, and the omission and misinspection are avoided.
Description
Technical Field
The invention relates to the technical field of computer aided design, in particular to an IFC-based construction project early-stage digital delivery and evaluation system and method.
Background
Construction schemes for government-invested construction projects require review by the authorities. The points of interest of the review work mainly include the contents of project site selection, scale, main technical standard, professional design scheme, investment estimation and the like.
At present, the evaluation mode is that a construction unit entrusts to compile a paper feasibility study report and attaches project scheme drawings and necessary approval documents; and entrusting experienced professional examiners to acquire design information from design files such as two-dimensional CAD drawings by related departments, and performing compliance examination according to examination specifications by means of calculation, reasoning and the like.
The project review mainly has the following characteristics: the method has the advantages of various types of approved files, more concerned control indexes, more review participants and paper-based document review. The inspection process has large workload and high threshold requirement, and simultaneously, the problems of missed inspection, wrong inspection, low efficiency and the like are easily caused due to low automation degree and the main subjective judgment of the examiners.
In order to solve the above problems, it is necessary to provide an accurate and efficient system and method for digital delivery and review at the early stage of project.
Disclosure of Invention
In view of the above defects in the prior art, the invention provides the IFC-based construction project early-stage digital delivery and review system and method, which achieve the purpose that through a construction information model, each party can visually know the relevant information such as scheme appearance, technical standard and the like, and the omission and wrong review are avoided.
In order to achieve the aim, the invention discloses an IFC-based construction project early-stage digital delivery and review system, which comprises a server and a plurality of clients; the client uses a WPF user interface framework of Microsoft, and the server uses an SQL database to store the relational data and the spatial data model of the items; the client side uses Socket connection to perform read-write operation of the relationship data and the space data model with the server; the system also comprises a model module, a special analysis module and a three-dimensional review module.
The model module adopts a building information model in an IFC format, namely the IFC model stores the geometric shape appearance and attribute information of the design scheme of the project and displays the geometric shape appearance and attribute information through a three-dimensional interface;
the plots and the individual buildings in the geometric shape appearance and attribute information of the design scheme are respectively stored as the independent IFC models and stored in the server;
at the client, the IFC model adopts a WPF rendering engine based on XBIM to display the model;
the model display comprises outdoor browsing, indoor roaming, sectioning with a sectioning box, and reading the floor name and elevation in the IFC model to horizontally section according to the floor elevation, and checking the effect of each floor of the building;
the special analysis module automatically or semi-manually calculates and analyzes each economic technical index by using the related attribute information in each IFC model;
the calculation and analysis of each economic and technical index comprises building height calculation, building density calculation, volume ratio calculation and green space ratio calculation; analyzing the use area of the functional room, analyzing the number of parking spaces, analyzing energy consumption and analyzing construction cost;
the three-dimensional review module: the management department and the reviewing unit propose reviewing opinions aiming at a certain part of the building information model, and are accompanied with a corresponding three-dimensional viewpoint, and the design unit revises the reviewing opinions according to the reviewing opinions, the modification scheme and the replying reviewing opinions;
the modification scheme is realized by uploading an updated building information model;
the three-dimensional review module adopts the functions provided by the XBIM to draw a rectangular frame in a three-dimensional view to intercept a picture, records a three-dimensional viewpoint of the central point of the rectangular frame, then automatically pops up a text box and inputs a text review opinion;
the text review opinions, the pictures and the three-dimensional viewpoints are all stored in a review opinion database of the server, and the review opinions are displayed in an opinion column of a platform interface of each client in a list form;
the review opinions comprise user names, text review opinions and pictures for proposing the review opinions; when the picture is clicked, automatically switching the platform interface of the client to the corresponding three-dimensional viewpoint;
each of the review intents in the opinion bar is shown below with a text box;
the text display box is used for inputting text reply opinions, storing the text reply opinions in the review opinion database and displaying the text reply opinions in the opinion column.
Preferably, the building height calculation process is as follows:
firstly, reading the 'building height' attribute in the IFC model of each building unit in the project;
secondly, taking the maximum value of the building height attribute as the building height of the project;
thirdly, reading a 'planned building height' attribute in the IFC model of the plot in the project;
finally, comparing the building height with the 'planned building height' attribute; and if the building height is greater than the planned building height attribute, sending a prompt that the building height of the design scheme does not conform to the plan to the client initiating the building height calculation.
Preferably, the building density calculation process is as follows:
firstly, reading a 'floor area' attribute in the IFC model of each building unit in the project and a 'floor area' attribute in the IFC model of a corresponding land parcel;
secondly, summing the 'floor area' attributes of all the building monomers, and dividing the sum by the 'floor area' attribute to obtain the building density;
thirdly, reading a 'planned building density' attribute in the IFC model of the plot of the project;
finally, comparing the building density with the 'planned building density' attribute; and if the building density is greater than the planned building density attribute, sending a prompt that the building density of the design scheme does not conform to the plan to the client initiating the building density calculation.
Preferably, the volume ratio calculation process is as follows:
firstly, reading a 'design building area' attribute in the IFC model of each building unit in the project and a 'land area' attribute in the IFC model of a land parcel;
secondly, summing all the attributes of the 'volumetric building area' and dividing the sum by the attribute of the 'land area' to obtain a volume fraction;
thirdly, reading a 'planned volume rate' attribute in the IFC model of the plot of the project;
finally, comparing the volume rate with the "planned volume rate" attribute; and if the volume rate is greater than the planned volume rate attribute, sending a prompt that the volume rate of the design scheme does not conform to the plan to the client initiating the volume rate calculation.
Preferably, the greenfield rate calculation process is as follows:
firstly, reading a 'green space rate' attribute in the IFC model of the parcel of the item;
secondly, reading a 'planning greenfield rate' attribute in the IFC model of the plot of the project;
and finally, comparing the green space rate attribute with the planned green space rate attribute, and if the green space rate attribute is smaller than the planned green space rate attribute, sending a prompt that the green space rate of the design scheme does not accord with the plan to the client initiating the green space rate calculation.
Preferably, the calculation analysis of each economic and technical index further comprises functional room use area analysis, parking space quantity analysis, energy consumption analysis and/or cost analysis.
The invention also provides a use method of the IFC-based construction project early-stage digital delivery and review system, which comprises the following steps:
step 1, a construction unit newly constructs projects in a system through corresponding client sides, fills basic information including project names and addresses, and appoints a management department and a design unit;
step 2, a design unit carries out early-stage scheme design on the project, building information models of the plots and each monomer building are built by using a BIM technology, various index information is added, the building information models are exported to IFC format building information model files and uploaded to the system, and other necessary files are added to serve as accessories;
step 3, the construction unit checks the design scheme in the system by using a model module, analyzes various indexes of the design scheme by using a special analysis module, if the design scheme passes the confirmation, the step 4 is carried out, if the design scheme does not pass the confirmation, a three-dimensional review module of the platform is used for proposing review opinions, the step 2 is returned, and the design unit modifies and uploads an updated IFC model;
step 4, the management department confirms whether to need to evaluate in the system, if need, appoint the unit of evaluation for the project, enter step 5, otherwise enter step 6 directly;
step 5, the evaluation unit uses the model module to check the design scheme in the system, uses the special analysis module to analyze various indexes of the design scheme, checks the compliance and the rationality of the design scheme, enters step 6 if the design scheme passes the evaluation, uses the three-dimensional evaluation module of the platform to provide the evaluation suggestion if the design scheme does not pass the evaluation, returns to step 2, and is modified and uploads the updated IFC model by the design unit;
step 6, the management department checks the design scheme in the system, wherein the design scheme comprises a three-dimensional model and various indexes, a special analysis module is used for analyzing the various indexes of the design scheme, the compliance and the rationality of the design scheme are checked, if the design scheme passes the review, the step 7 is carried out, if the design scheme does not pass the review, a three-dimensional review module of a platform is used for proposing review comments, the step 2 is returned, and a design unit modifies and uploads an updated IFC model;
and 7, the management department finally approves the design scheme at the early stage and finishes the evaluation work.
The invention has the beneficial effects that:
1. according to the invention, through the building information model, all parties can visually know the relevant information such as scheme appearance, technical standard and the like, and the omission and misinspection are avoided.
2. The invention can read and analyze the building information model delivery and review systems of various projects through the unified IFC standard format, thereby improving the universality of the system.
3. The invention can lead each party unit participating in the evaluation to carry out the corresponding operation of online digital delivery and evaluation through the structure of client-server end and the authority distribution, thereby improving the evaluation efficiency.
4. By the aid of the analysis function, all parties can efficiently calculate or verify the compliance and the rationality of each index of the scheme, and evaluation efficiency is improved.
5. Through the approval function, each party can efficiently provide scheme approval opinions aiming at the building information model, and submit a new building information model through the platform, so that the project approval progress is accelerated.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
FIG. 1 is a diagram illustrating system role and function partitioning in an embodiment of the present invention
FIG. 2 shows a flow chart of an embodiment of the present invention.
Detailed Description
Examples
As shown in fig. 1 and 2, the IFC-based construction project early-stage digital delivery and review system comprises a server and a plurality of clients; the client uses a WPF user interface framework of Microsoft, and the server uses an SQL database to store the relational data and the spatial data model of the items; the client side uses Socket connection to perform read-write operation of the relationship data and the space data model with the server; the system also comprises a model module, a special analysis module and a three-dimensional review module.
The model module adopts a building information model in an IFC format, namely the IFC model stores the geometric shape appearance and attribute information of the design scheme of the project and displays the geometric shape appearance and attribute information through a three-dimensional interface;
the plots and the individual buildings in the geometric shape appearance and attribute information of the design scheme are respectively stored as the independent IFC models and stored in the server;
at the client, the IFC model adopts a WPF rendering engine based on XBIM to display the model;
the model display comprises outdoor browsing, indoor roaming, sectioning with a sectioning box, and reading the floor name and elevation in the IFC model to horizontally section according to the floor elevation, and checking the effect of each floor of the building;
the method is characterized in that the method comprises the following steps of XBIM, namely https:// docs.xbim.net, is a prior art, is an IFC-supporting open source BIM tool set under a NET platform, and supports reading, creating and displaying BIM models in IFC formats, including geographic data, topological operation and visualization.
In the invention, an IFC model of a design scheme is displayed by adopting a three-dimensional view of an XBIM (extensible building information model) at a client, the outdoor browsing effect, the indoor roaming effect and the sectioning effect of a sectioning box of the building information model are realized through the functions provided by the XBIM, the floor name and the elevation in the IFC are read and sectioned according to the level of the floor elevation, and the effect of each floor plane of the building is checked.
The special analysis module automatically or semi-manually calculates and analyzes each economic technical index by using the related attribute information in each IFC model;
the calculation and analysis of each economic and technical index comprises building height calculation, building density calculation, volume ratio calculation and green space ratio calculation; analyzing the use area of the functional room, analyzing the number of parking spaces, analyzing energy consumption and analyzing construction cost;
the three-dimensional review module: the management department and the reviewing unit propose reviewing opinions aiming at a certain part of the building information model, and are accompanied with a corresponding three-dimensional viewpoint, and the design unit revises the reviewing opinions according to the reviewing opinions, the modification scheme and the replying reviewing opinions;
the modification scheme is realized by uploading an updated building information model;
the three-dimensional review module adopts the functions provided by the XBIM to draw a rectangular frame in a three-dimensional view to intercept a picture, records a three-dimensional viewpoint of the central point of the rectangular frame, then automatically pops up a text box and inputs a text review opinion;
the text review opinions, the pictures and the three-dimensional viewpoints are all stored in a review opinion database of the server, and the review opinions are displayed in an opinion column of a platform interface of each client in a list form;
the review opinions comprise user names, text review opinions and pictures for proposing the review opinions; when the picture is clicked, automatically switching the platform interface of the client to the corresponding three-dimensional viewpoint;
each of the review intents in the opinion bar is shown below with a text box;
the text display box is used for inputting text reply opinions, storing the text reply opinions in the review opinion database and displaying the text reply opinions in the opinion column.
The working principle of the invention is as follows:
1. storing a design scheme by applying an IFC format building information model, wherein the design scheme comprises geometric shape appearance and project attribute information of a land parcel and each single building;
2. the method comprises the steps of constructing a platform by applying a client-server architecture, and realizing an online early-stage delivery and review process of a building project, wherein the process comprises the steps of delivering and transmitting a design scheme, checking appearance and attribute information of the design scheme, filling review opinions in combination with a three-dimensional viewpoint of a model, determining whether the design scheme passes or not and the like;
3. calculating and analyzing each economic technical index by using the related attribute information in the building information model;
4. and adding review opinions in combination with the three-dimensional viewpoint of the building information model.
In some embodiments, the building height calculation is performed as follows:
firstly, reading the 'building height' attribute in the IFC model of each building unit in the project;
secondly, taking the maximum value of the building height attribute as the building height of the project;
thirdly, reading a 'planned building height' attribute in the IFC model of the plot in the project;
finally, comparing the building height with the 'planned building height' attribute; and if the building height is greater than the planned building height attribute, sending a prompt that the building height of the design scheme does not conform to the plan to the client initiating the building height calculation.
In some embodiments, the building density calculation is performed as follows:
firstly, reading a 'floor area' attribute in the IFC model of each building unit in the project and a 'floor area' attribute in the IFC model of a corresponding land parcel;
secondly, summing the 'floor area' attributes of all the building monomers, and dividing the sum by the 'floor area' attribute to obtain the building density;
thirdly, reading a 'planned building density' attribute in the IFC model of the plot of the project;
finally, comparing the building density with the 'planned building density' attribute; and if the building density is greater than the planned building density attribute, sending a prompt that the building density of the design scheme does not conform to the plan to the client initiating the building density calculation.
In some embodiments, the volume fraction calculation is performed as follows:
firstly, reading a 'design building area' attribute in the IFC model of each building unit in the project and a 'land area' attribute in the IFC model of a land parcel;
secondly, summing all the attributes of the 'volumetric building area' and dividing the sum by the attribute of the 'land area' to obtain a volume fraction;
thirdly, reading a 'planned volume rate' attribute in the IFC model of the plot of the project;
finally, comparing the volume rate with the "planned volume rate" attribute; and if the volume rate is greater than the planned volume rate attribute, sending a prompt that the volume rate of the design scheme does not conform to the plan to the client initiating the volume rate calculation.
In some embodiments, the greenfield rate calculation is performed as follows:
firstly, reading a 'green space rate' attribute in the IFC model of the parcel of the item;
secondly, reading a 'planning greenfield rate' attribute in the IFC model of the plot of the project;
and finally, comparing the green space rate attribute with the planned green space rate attribute, and if the green space rate attribute is smaller than the planned green space rate attribute, sending a prompt that the green space rate of the design scheme does not accord with the plan to the client initiating the green space rate calculation. In some embodiments, the computational analysis of each economic-technical indicator further includes functional room usage area analysis, parking space quantity analysis, energy consumption analysis, and/or cost analysis.
The invention also provides a use method of the IFC-based construction project early-stage digital delivery and review system, which comprises the following steps:
step 1, a construction unit newly constructs projects in a system through corresponding client sides, fills basic information including project names and addresses, and appoints a management department and a design unit;
step 2, a design unit carries out early-stage scheme design on the project, building information models of the plots and each monomer building are built by using a BIM technology, various index information is added, the building information models are exported to IFC format building information model files and uploaded to the system, and other necessary files are added to serve as accessories;
step 3, the construction unit checks the design scheme in the system by using a model module, analyzes various indexes of the design scheme by using a special analysis module, if the design scheme passes the confirmation, the step 4 is carried out, if the design scheme does not pass the confirmation, a three-dimensional review module of the platform is used for proposing review opinions, the step 2 is returned, and the design unit modifies and uploads an updated IFC model;
step 4, the management department confirms whether to need to evaluate in the system, if need, appoint the unit of evaluation for the project, enter step 5, otherwise enter step 6 directly;
step 5, the evaluation unit uses the model module to check the design scheme in the system, uses the special analysis module to analyze various indexes of the design scheme, checks the compliance and the rationality of the design scheme, enters step 6 if the design scheme passes the evaluation, uses the three-dimensional evaluation module of the platform to provide the evaluation suggestion if the design scheme does not pass the evaluation, returns to step 2, and is modified and uploads the updated IFC model by the design unit;
step 6, the management department checks the design scheme in the system, wherein the design scheme comprises a three-dimensional model and various indexes, a special analysis module is used for analyzing the various indexes of the design scheme, the compliance and the rationality of the design scheme are checked, if the design scheme passes the review, the step 7 is carried out, if the design scheme does not pass the review, a three-dimensional review module of a platform is used for proposing review comments, the step 2 is returned, and a design unit modifies and uploads an updated IFC model;
and 7, the management department finally approves the design scheme at the early stage and finishes the evaluation work.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (7)
1. The IFC-based early-stage digital delivery and review system for the construction project comprises a server and a plurality of clients; the client uses a WPF user interface framework of Microsoft, and the server uses an SQL database to store the relational data and the spatial data model of the items; the client side uses Socket connection to perform read-write operation of the relationship data and the space data model with the server; the method is characterized in that: the system also comprises a model module, a special analysis module and a three-dimensional review module;
the model module adopts an IFC (information processing system) format building information model, namely the IFC model stores the geometric shape appearance and attribute information of the design scheme of the project and displays the geometric shape appearance and attribute information through a three-dimensional interface;
the plots and the individual buildings in the geometric shape appearance and attribute information of the design scheme are respectively stored as the independent IFC models and stored in the server;
at the client, the IFC model adopts a WPF rendering engine based on XBIM to display the model;
the model display comprises outdoor browsing, indoor roaming, sectioning with a sectioning box, and reading the floor name and elevation in the IFC model to horizontally section according to the floor elevation, and checking the effect of each floor of the building;
the special analysis module automatically or semi-manually calculates and analyzes each economic technical index by using the related attribute information in each IFC model;
the calculation and analysis of each economic and technical index comprises building height calculation, building density calculation, volume ratio calculation and green space ratio calculation; analyzing the use area of the functional room, analyzing the number of parking spaces, analyzing energy consumption and analyzing construction cost;
the three-dimensional review module: the management department and the reviewing unit propose reviewing opinions aiming at a certain part of the building information model, and are accompanied with a corresponding three-dimensional viewpoint, and the design unit revises the reviewing opinions according to the reviewing opinions, the modification scheme and the replying reviewing opinions;
the modification scheme is realized by uploading an updated building information model;
the three-dimensional review module adopts the functions provided by the XBIM to draw a rectangular frame in a three-dimensional view to intercept a picture, records a three-dimensional viewpoint of the central point of the rectangular frame, then automatically pops up a text box and inputs a text review opinion;
the text review opinions, the pictures and the three-dimensional viewpoints are all stored in a review opinion database of the server, and the review opinions are displayed in an opinion column of a platform interface of each client in a list form;
the review opinions comprise user names, text review opinions and pictures for proposing the review opinions; when the picture is clicked, automatically switching the platform interface of the client to the corresponding three-dimensional viewpoint;
each of the review intents in the opinion bar is shown below with a text box;
the text display box is used for inputting text reply opinions, storing the text reply opinions in the review opinion database and displaying the text reply opinions in the opinion column.
2. The IFC-based construction project upfront digital delivery and review system of claim 1, wherein the building height calculation is performed as follows:
firstly, reading the 'building height' attribute in the IFC model of each building unit in the project;
secondly, taking the maximum value of the building height attribute as the building height of the project;
thirdly, reading a 'planned building height' attribute in the IFC model of the plot in the project;
finally, comparing the building height with the 'planned building height' attribute; and if the building height is greater than the planned building height attribute, sending a prompt that the building height of the design scheme does not conform to the plan to the client initiating the building height calculation.
3. The IFC-based construction project upfront digital delivery and review system of claim 1, wherein the building density calculation is performed as follows:
firstly, reading a 'floor area' attribute in the IFC model of each building unit in the project and a 'floor area' attribute in the IFC model of a corresponding land parcel;
secondly, summing the 'floor area' attributes of all the building monomers, and dividing the sum by the 'floor area' attribute to obtain the building density;
thirdly, reading a 'planned building density' attribute in the IFC model of the plot of the project;
finally, comparing the building density with the 'planned building density' attribute; and if the building density is greater than the planned building density attribute, sending a prompt that the building density of the design scheme does not conform to the plan to the client initiating the building density calculation.
4. The IFC-based construction project upfront digital delivery and review system of claim 1, wherein the volumetric rate calculation is performed as follows:
firstly, reading a 'design building area' attribute in the IFC model of each building unit in the project and a 'land area' attribute in the IFC model of a land parcel;
secondly, summing all the attributes of the 'volumetric building area' and dividing the sum by the attribute of the 'land area' to obtain a volume fraction;
thirdly, reading a 'planned volume rate' attribute in the IFC model of the plot of the project;
finally, comparing the volume rate with the "planned volume rate" attribute; and if the volume rate is greater than the planned volume rate attribute, sending a prompt that the volume rate of the design scheme does not conform to the plan to the client initiating the volume rate calculation.
5. The IFC-based construction project upfront digital delivery and review system of claim 1, wherein the greenfield rate calculation is performed as follows:
firstly, reading a 'green space rate' attribute in the IFC model of the parcel of the item;
secondly, reading a 'planning greenfield rate' attribute in the IFC model of the plot of the project;
and finally, comparing the green space rate attribute with the planned green space rate attribute, and if the green space rate attribute is smaller than the planned green space rate attribute, sending a prompt that the green space rate of the design scheme does not accord with the plan to the client initiating the green space rate calculation.
6. The IFC-based construction project upfront digital delivery and review system of claim 1, wherein the computational analysis of each of the economic technical indicators further comprises functional room usage area analysis, parking space quantity analysis, energy consumption analysis, and/or cost analysis.
7. The method of using the IFC-based construction project upfront digital delivery and review system of claim 1, comprising the steps of:
step 1, a construction unit newly constructs projects in a system through corresponding client sides, fills basic information including project names and addresses, and appoints a management department and a design unit;
step 2, a design unit carries out early-stage scheme design on the project, building information models of the plots and each monomer building are built by using a BIM technology, various index information is added, the building information models are exported to IFC format building information model files and uploaded to the system, and other necessary files are added to serve as accessories;
step 3, the construction unit checks the design scheme in the system by using a model module, analyzes various indexes of the design scheme by using a special analysis module, if the design scheme passes the confirmation, the step 4 is carried out, if the design scheme does not pass the confirmation, a three-dimensional review module of the platform is used for proposing review opinions, the step 2 is returned, and the design unit modifies and uploads an updated IFC model;
step 4, the management department confirms whether to need to evaluate in the system, if need, appoint the unit of evaluation for the project, enter step 5, otherwise enter step 6 directly;
step 5, the evaluation unit uses the model module to check the design scheme in the system, uses the special analysis module to analyze various indexes of the design scheme, checks the compliance and the rationality of the design scheme, enters step 6 if the design scheme passes the evaluation, uses the three-dimensional evaluation module of the platform to provide the evaluation suggestion if the design scheme does not pass the evaluation, returns to step 2, and is modified and uploads the updated IFC model by the design unit;
step 6, the management department checks the design scheme in the system, wherein the design scheme comprises a three-dimensional model and various indexes, a special analysis module is used for analyzing the various indexes of the design scheme, the compliance and the rationality of the design scheme are checked, if the design scheme passes the review, the step 7 is carried out, if the design scheme does not pass the review, a three-dimensional review module of a platform is used for proposing review comments, the step 2 is returned, and a design unit modifies and uploads an updated IFC model;
and 7, the management department finally approves the design scheme at the early stage and finishes the evaluation work.
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| CN202011345990.4A CN112434364B (en) | 2020-11-26 | 2020-11-26 | IFC-based building project early-stage digital delivery and evaluation system and method |
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| CN202011345990.4A CN112434364B (en) | 2020-11-26 | 2020-11-26 | IFC-based building project early-stage digital delivery and evaluation system and method |
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