CN116090692B - Engineering cost management system and method based on BIM technology - Google Patents
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Abstract
The invention relates to the technical field of engineering cost, and discloses an engineering cost management system and method based on BIM technology, comprising a BIM construction unit, an engineering classification unit, a comprehensive management unit, an engineering amount calculation unit, a cost management unit and a checking unit, wherein the BIM construction unit constructs a standardized BIM model and sends the BIM model to the engineering classification unit, and the engineering classification unit classifies the BIM model and sends classified data to the comprehensive management unit; by adopting the cost management unit to calculate the budget cost, the checking unit of the present application calculates the actual budget cost by taking the previous calculation result into the calculation, so that the result of each time is comprehensively considered, and the average value of all the results is calculated, so that the final calculation result is more accurate along with the increase of the calculation times, and the problem of larger error between the budget cost and the actual cost caused by the separation from the actual calculation when the theoretical calculation is adopted is avoided.
Description
Technical Field
The invention relates to the technical field of engineering cost, in particular to an engineering cost management system and method based on BIM technology.
Background
BIM is through setting up the fictitious three-dimensional model of building engineering, utilize the digital technology, offer the complete building engineering information base consistent with actual situation for this model, this information base includes not merely describing geometric information, professional attribute and status information of the building component, also include the status information of the non-component object, with the help of this three-dimensional model comprising building engineering information, has greatly improved the information integration degree of the building engineering.
The construction cost is the main basis for evaluating the rationality and the investment benefit of the total investment and the sub-investment, the construction cost can be effectively controlled according to the result of the construction cost, and the BIM can be used for building decoration engineering full life cycle components, so the construction cost is required to be carried out by adopting the BIM technology, the rapid result of the construction cost can be solved, the calculation is more complete, but the traditional BIM construction cost has the following problems:
when BIM is adopted to manage engineering cost, after the BIM model is adopted to carry out construction, a user budgets the price required by the construction according to the data in the BIM model, and when budgets, the calculation is generally carried out through the price required by theory, and the situation encountered in each construction is different, so the calculation is carried out by adopting a theoretical value, and finally, the difference between the budgets made and the price required by the practice is larger, so that the good budgeting effect cannot be achieved;
when the BIM model is processed, the traditional engineering cost management system cannot rapidly analyze the BIM model, and when a problem occurs in the BIM model, error data in the BIM model cannot be searched and modified, so that the final construction efficiency can be influenced.
Disclosure of Invention
In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a system and a method for managing construction costs based on the BIM technology, so as to solve the technical problems set forth in the background art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the engineering cost management system based on BIM technology comprises a BIM construction unit, an engineering classification unit, a comprehensive management unit, an engineering amount calculation unit, a cost management unit and a checking unit, wherein the BIM construction unit constructs a standardized BIM model and transmits the BIM model to the engineering classification unit, the engineering classification unit classifies the BIM model and transmits classified data to the comprehensive management unit, the comprehensive management unit horizontally adds identification and conversion model data and transmits the identification and conversion model data to the engineering amount calculation unit, the engineering amount calculation unit calculates a list engineering amount according to the data transmitted by the comprehensive management unit and transmits the list engineering amount calculation to the cost management unit, the cost management unit performs contract amount calculation according to the engineering amount and transmits a calculation result and a process to the checking unit, and the checking unit calculates actual cost of engineering and compares the calculation result of the cost management unit and corrects the cost according to a comparison deviation, and a final engineering cost numerical calculation formula is that
Wherein G is the contract amount calculated by the cost management unit, n is the total number of times of manufacturing cost outside the time, and k i Contract amount, k calculated for the current front cost management unit m For the actual cost before this time, M is the final actual budget cost.
In a preferred embodiment, the BIM building unit performs BIM model building by adopting a Revit, adding primitives by using the Revit, and performing BIM model building, where the primitives include model primitives, reference primitives and view-specific primitives, the primitives include type attributes and instance attributes, the primitives are combined with the type attributes and the instance attributes into standard building groups, predefined system groups and built-in target groups, and the Revit uses different groups to form, so as to complete BIM model building.
In a preferred embodiment, the classification unit includes a highway engineering module, a water transportation engineering module, a municipal engineering module, a railway engineering module, a building engineering module and an underground engineering module, the BIM model built in the BIM construction unit performs engineering type selection in the classification unit, each part in the BIM model is classified, and one BIM model can be composed of different engineering modules.
In a preferred embodiment, the integrated management unit includes a data processing module, a data checking module and a conversion module, where the data processing module receives the BIM model and outputs the BIM model as an IFC file, and the data processing module sends the BIM model converted into the IFC file to the data checking module, and the data checking module finds an error in the IFC file and sends the error to the BIM building unit, and the conversion module adds and converts the BIM model data and sends the same to the engineering amount calculating unit.
In a preferred embodiment, the data verification module performs integrity verification and correctness verification on the BIM data converted into the IFC, and the data verification module performs integrity verification on the BIM data, including the steps of:
step A1, creating a standard verification template of object names and attribute information, and writing the names of target objects and the names of attributes into the standard verification template respectively;
step A2, performing template matching, reading an IFC file to be detected, and searching in the IFC file by taking the object name of the standard verification template as a keyword;
a3, after the target object is positioned, comparing the attribute name and the effective value of the attribute value with the content of the standard verification template, counting the number of the target object and verifying whether the attribute of the object exists;
and step A4, finally classifying and outputting the counting result and the complete attribute condition of the target object in the IFC file, and sending the data of counting errors and incomplete attribute to the BIM construction unit.
In a preferred embodiment, the data verification module performs correctness verification of the BIM data, extracts corresponding attribute data in the IFC file according to the BIM standard and terms of the building design specification, directly compares the attribute data with the BIM standard and terms of the building design specification, and verifies correctness of the information, and sends erroneous information to the BIM construction unit.
In a preferred embodiment, the data correctness checking is classified into direct checking and indirect checking, wherein the direct checking is that checking information can be directly obtained from the information model without arithmetic operation and geometric operation, and the indirect checking is that checking information needs to be obtained through arithmetic operation and geometric operation, and the data correctness checking can be performed on BIM model data by adopting two modes of direct checking and indirect checking.
In a preferred embodiment, the engineering quantity calculation unit includes a budget manual cost module for calculating costs of field personnel, costs of management personnel and costs of designers, a budget material cost module for calculating costs of required materials and costs of damaged materials, and a budget equipment cost module for calculating costs of all required equipment and costs of equipment loss.
In a preferred embodiment, the checking unit includes an actual cost module for collecting all actual costs each time it is constructed, an actual budget module for calculating the contract amount calculated by the cost management unit according to the data collected by the actual cost module using the formula M, and a deviation calculation module for calculating the deviation value P between the cost calculated by the actual budget module and the time cost module, the deviation value P being calculated by the deviation calculation moduleThe calculation formula of P is
Wherein B is the total cost of the construction.
A project cost management method based on BIM technology comprises the following steps:
s1, a BIM construction unit creates a standardized BIM model and sends the BIM model to an engineering classification unit;
s2, the engineering classification unit classifies the BIM model and sends classified data to the comprehensive management unit;
s3, the comprehensive management unit processes and verifies the BIM model, performs flat addition identification and conversion of model data, and sends the model data to the engineering calculation unit;
s4, the engineering quantity calculation unit receives the data, performs inventory engineering quantity calculation and sends the inventory engineering quantity calculation to the construction cost management unit, and the construction cost management unit performs contract quantity calculation according to the engineering quantity;
and S5, the checking unit calculates the actual cost and the actual budget cost of the project.
The invention has the technical effects and advantages that:
1. the present invention calculates the budget cost by using the cost management unit, and the budget cost is obtained by theory, so the checking unit of the present application calculates the cost by using
The actual budget cost calculation is carried out, and the previous calculation result is taken into the formula M for calculation, so that the result of each time is comprehensively considered, and the average value of all the results is calculated, so that the final calculation result is more accurate along with the increase of the calculation times, and the problem of larger error between the budget cost and the actual cost caused by the separation from the actual calculation when the theoretical calculation is adopted is avoided;
2. according to the invention, the BIM model is received through the data processing module and is output as the IFC file, so that the BIM model is converted into the FIC file, the IFC file standard is a widely accepted data standard internationally, diversified information expression of the building information model is supported, the BIM data interaction requirements under different software environments can be met, and the correction of the BIM data by adopting the FIC file is more convenient and efficient;
3. the invention calculates the deviation value between the calculated actual budget cost and the actual cost by adopting the deviation calculation module, so that whether the system of the application is correct enough can be judged according to the result of each calculation.
Drawings
FIG. 1 is a schematic overall flow chart of the present invention;
FIG. 2 is a schematic flow chart of the manufacturing method of the invention.
Detailed Description
The embodiments of the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which the configuration of each structure described in the following embodiments is merely illustrative, and a construction cost management system and method based on the BIM technology according to the present invention is not limited to the configuration described in the following embodiments, but all other embodiments obtained by a person skilled in the art without making any creative effort are within the scope of protection of the present invention.
Referring to fig. 1, the present invention provides a construction cost management system based on a BIM technology, including a BIM construction unit, a construction classification unit, a comprehensive management unit, a construction amount calculation unit, a construction cost management unit, and a verification unit, wherein the BIM construction unit constructs a standardized BIM model and transmits the same to the construction classification unit, the construction classification unit classifies the BIM model and transmits classified data to the comprehensive management unit, the comprehensive management unit horizontally adds identification and conversion model data and transmits the same to the construction amount calculation unit, the construction amount calculation unit calculates a list construction amount according to the data transmitted by the comprehensive management unit and transmits the same to the construction cost management unit, the construction cost management unit performs contract amount calculation according to the construction amount and transmits the calculation result and the process to the verification unit, and the verification unit calculates the actual cost of a construction and compares the actual cost with the calculation result of the construction cost management unit and calculates the contract amount according to a comparison deviationCorrecting the cost, wherein the final engineering cost numerical calculation formula is as follows
Wherein G is the contract amount calculated by the cost management unit, n is the total number of times of manufacturing cost outside the time, and k i Contract amount, k calculated for the current front cost management unit m For the actual cost before this time, M is the final actual budget cost.
In the embodiment of the present application, after the budget cost is calculated by the cost management unit, the budget cost at this time is theoretically obtained, so the checking unit of the present application calculates the cost of the budget cost by
The actual budget cost calculation is carried out, and the previous calculation result is taken into the formula M for calculation, so that the result of each time is comprehensively considered, and the average value of all the results is calculated, so that the final calculation result is more accurate along with the increase of the calculation times, and the problem of larger error between the budget cost and the actual cost caused by the fact that the calculation is separated from the actual calculation when the theoretical calculation is adopted is avoided.
Further, the BIM construction unit adopts Revit to carry out BIM model construction, revit adds the graphic primitive to carry out BIM model construction, the graphic primitive comprises a model graphic primitive, a reference graphic primitive and a view-specific graphic primitive, the graphic primitive comprises a type attribute and an instance attribute, the graphic primitive, the type attribute and the instance attribute are combined into a standard construction group, a predefined system group and a built-in target group, and Revit adopts different groups to carry out composition, so that BIM model construction is completed; when building the BIM model, the interior of a building comprises a plurality of identical or similar parts, at the moment, one group can be used for representing one part in the building, the part can be repeatedly used, or the primitive or attribute in the building can be changed to be another group, at the moment, the similar parts are formed, so that the time BIM is quickly modeled, the modeling time is saved, and the working speed is improved.
Further, the classification unit comprises a highway engineering module, a water transportation engineering module, a municipal engineering module, a railway engineering module, a building engineering module and an underground engineering module, the BIM model built in the BIM building unit is used for selecting engineering types in the classification unit, all parts in the BIM model are classified, and one BIM model can be composed of different engineering modules.
In this application embodiment, the required material cost of different engineering is different to its required engineering time in different construction sites is different, consequently the human cost is different, the classification unit of this application is including six kinds of different engineering types, consequently, the BIM model of establishing can select the engineering type who accords with it, thereby calculate in different engineering, the result of carrying out the calculation is more accurate, when carrying out the classification, when carrying out railway construction, the part that is in ground can carry out the calculation in the railway engineering module, and underground part can calculate in the underground engineering module, consequently carry out accurate classification and calculation to it, thereby improve the accurate degree of cost prediction.
Further, the integrated management unit comprises a data processing module, a data verification module and a conversion module, wherein the data processing module receives the BIM model and outputs the BIM model into an IFC file, the data processing module sends the BIM model converted into the IFC file to the data verification module, the data verification module finds out errors in the IFC file and sends the errors to the BIM construction unit, and the conversion module horizontally identifies and converts BIM model data and sends the BIM model data to the engineering calculation unit; the data processing module receives the BIM model and outputs the BIM model as an IFC file, so that the BIM model is converted into an FIC file, the IFC file standard is a widely internationally accepted data standard, diversified information expression of the building information model is supported, the BIM data interaction requirements under different software environments can be met, and the BIM data is more convenient and efficient to correct by adopting the FIC file.
Further, the data verification module performs integrity verification and correctness verification on the BIM data converted into the IFC, and the data verification module performs integrity verification on the BIM data, including the following steps:
step A1, creating a standard verification template of object names and attribute information, and writing the names of target objects and the names of attributes into the standard verification template respectively;
step A2, performing template matching, reading an IFC file to be detected, and searching in the IFC file by taking the object name of the standard verification template as a keyword;
a3, after the target object is positioned, comparing the attribute name and the effective value of the attribute value with the content of the standard verification template, counting the number of the target object and verifying whether the attribute of the object exists;
and step A4, finally classifying and outputting the counting result and the complete attribute condition of the target object in the IFC file, and sending the data of counting errors and incomplete attribute to the BIM construction unit.
In the embodiment of the application, the integrity check is performed by adopting the mode of searching and positioning in the IFC file by using the standard check template, and because the standard check template is internally provided with the name of the target object and the name of the attribute, the comparison with the IFC file is faster, so that whether the name of the target object and the name of the attribute have problems or not can be rapidly identified, and when the problems exist, the part with the problems is returned to the BIM construction unit to reconstruct the part until the whole is enough complete.
Further, the data verification module performs correctness verification of BIM data, extracts corresponding attribute data in the IFC file according to BIM standards and terms of building design specifications, directly compares the attribute data with the BIM standards and the terms of the building design specifications, verifies the correctness of information, and sends error information to the BIM construction unit; and (3) checking the correctness of the data, wherein the checked standard is BIM standard and terms of building design specification, so that the BIM model finally constructed accords with building production requirements, and when actual production is carried out, the BIM model can be directly constructed according to the BIM model, so that the rationality of the BIM model is ensured, and the places in the BIM model, which do not accord with the BIM standard and terms of building design specification, are error points, and the error points are sent to a BIM construction unit for reconstruction, so that the correctness of the BIM model is ensured.
Furthermore, the data correctness checking is divided into two types, namely direct checking and indirect checking, wherein the direct checking is that checking information can be directly obtained from an information model without arithmetic operation and geometric operation, and the indirect checking is that the checking information needs to be obtained through the arithmetic operation and the geometric operation, and the data correctness checking can be performed on BIM model data by adopting two modes of direct checking and indirect checking.
In this embodiment, the data correctness check is divided into two types of direct check and indirect check, to the information such as post, wall body, room height, etc., it has standard good size value at BIM model data, therefore it directly with BIM standard and building design rule's clause check can, and when carrying out indirect check, if landing width, it does not have proprietary expression entity in the IFC file, yunnan dish need draw all size information of landing, analyze the IFC expression of landing, obtain the width value at carrying out arithmetic operation, and can't directly obtain the width value, consequently adopt direct check and indirect check mode, can carry out whole check to BIM model in, can not appear unable check-up part.
Further, the engineering quantity calculating unit comprises a budget artificial cost module, a budget material cost module and a budget equipment cost module, wherein the budget artificial cost module calculates the cost of field personnel, the cost of management personnel and the cost of designers, the budget material cost module calculates the cost of required materials and the cost of damaged materials, and the budget equipment cost module calculates the cost of all required equipment and the cost of equipment loss.
In this embodiment of the present application, the engineering amount calculating unit includes a budget artificial cost module, a budget material cost module and a budget equipment cost module, where the budget artificial cost module includes the cost of field personnel, the cost of management personnel and the cost of design personnel, so that all the artificial costs for construction can be calculated, the problem that construction is affected due to insufficient budget is avoided, and when materials and equipment are used, because they have a certain risk of damage, when budgeting of materials and equipment is performed, the situation of loss must be considered, thereby ensuring accuracy of budgeting.
Further, the checking unit includes an actual cost module and an actual budget module, and a deviation calculating module, the actual cost module collects all actual costs spent in each construction, the actual budget module calculates according to the data collected by the actual cost module and the contract amount calculated by the cost management unit by using a formula M, and the calculation is divided into three types of labor cost, material cost and equipment cost, the deviation calculating module calculates a deviation value P between the cost calculated by the actual budget module and the time cost module, and the calculation formula of the deviation value P is that
Wherein B is the total cost of the construction; the actual cost module in the checking unit collects all actual cost each time, so that the actual cost each time can be compared with the budget cost, deviation between the actual cost and the budget cost can be known, the cost calculated by actual operation is divided into labor cost, material cost and equipment cost, the cost corresponds to the budget labor cost module, the budget material cost module and the budget equipment cost module, and therefore, the budget of which type can be known is accurate.
Referring to fig. 2, a construction cost management method based on a BIM technology includes the steps of:
s1, a BIM construction unit creates a standardized BIM model and sends the BIM model to an engineering classification unit;
s2, the engineering classification unit classifies the BIM model and sends classified data to the comprehensive management unit;
s3, the comprehensive management unit processes and verifies the BIM model, performs flat addition identification and conversion of model data, and sends the model data to the engineering calculation unit;
s4, the engineering quantity calculation unit receives the data, performs inventory engineering quantity calculation and sends the inventory engineering quantity calculation to the construction cost management unit, and the construction cost management unit performs contract quantity calculation according to the engineering quantity;
and S5, the checking unit calculates the actual cost and the actual budget cost of the project.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions in accordance with the embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired means from one website site, computer, server, or data center. Computer readable storage media can be any available media that can be accessed by a computer or data storage devices, such as servers, data centers, etc. that contain one or more collections of available media. The usable medium may be a magnetic medium, an optical medium, or a semiconductor medium. The semiconductor medium may be a solid state disk.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided in the present application, it should be understood that the disclosed systems, apparatuses, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown 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 units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Finally: the foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The utility model provides a project cost management system based on BIM technique which characterized in that: the system comprises a BIM construction unit, an engineering classification unit, a comprehensive management unit, an engineering amount calculation unit, a construction cost management unit and a checking unit, wherein the BIM construction unit constructs a standardized BIM model and transmits the BIM model to the engineering classification unit, the engineering classification unit classifies the BIM model and transmits classified data to the comprehensive management unit, the comprehensive management unit recognizes and converts model data and transmits the model data to the engineering amount calculation unit, the engineering amount calculation unit calculates the inventory engineering amount according to the data transmitted by the comprehensive management unit and transmits the inventory engineering amount to the construction cost management unit, the construction cost management unit performs contract amount calculation according to the engineering amount and transmits the calculation result and the process to the checking unit, the checking unit calculates the actual cost of engineering and compares the calculation result with the construction cost management unit and corrects the construction cost according to the comparison deviation, and the final construction cost value calculation formula is that
Wherein G is the contract amount calculated by the cost management unit, n is the total number of times of cost, and k i Contract amount, k calculated for the current front cost management unit m M is the final actual budget cost for the actual cost before the present time;
the BIM construction unit adopts Revit to carry out BIM model construction, revit adds primitives to carry out BIM model construction, the primitives comprise model primitives, reference primitives and view-specific primitives, the primitives comprise type attributes and instance attributes, the primitives, the type attributes and the instance attributes are combined into standard construction groups, predefined system groups and built-in target groups, and Revit adopts different groups to carry out composition, so that BIM model construction is completed;
the comprehensive management unit comprises a data processing module, a data verification module and a conversion module, wherein the data processing module receives the BIM model and outputs the BIM model into an IFC file, the data processing module sends the BIM model converted into the IFC file to the data verification module, the data verification module finds out errors in the IFC file and sends the errors to the BIM construction unit, and the conversion module identifies and converts BIM model data and sends the BIM model data to the engineering calculation unit;
the data verification module performs integrity verification and correctness verification on BIM data converted into IFCs, and the data verification module performs integrity verification on the BIM data, and the data verification module comprises the following steps:
step A1, creating a standard verification template of object names and attribute information, and writing the names of target objects and the names of attributes into the standard verification template respectively;
step A2, performing template matching, reading an IFC file to be detected, and searching in the IFC file by taking the object name of the standard verification template as a keyword;
a3, after the target object is positioned, comparing the attribute name and the effective value of the attribute value with the content of the standard verification template, counting the number of the target object and verifying whether the attribute of the object exists;
and step A4, finally classifying and outputting the counting result and the complete attribute condition of the target object in the IFC file, and sending the data of counting errors and incomplete attribute to the BIM construction unit.
2. A construction cost management system based on BIM technology according to claim 1, wherein: the classification unit comprises a highway engineering module, a water transportation engineering module, a municipal engineering module, a railway engineering module, a building engineering module and an underground engineering module, wherein the BIM model built in the BIM building unit is used for selecting engineering types in the classification unit, all parts in the BIM model are classified, and one BIM model consists of different engineering modules.
3. A construction cost management system based on BIM technology according to claim 2, wherein: the data verification module performs BIM data correctness verification, extracts corresponding attribute data in the IFC file according to BIM standards and building design specification clauses, directly compares the attribute data with the BIM standards and building design specification clauses to verify information correctness, and sends error information to the BIM construction unit.
4. A construction cost management system based on BIM technology according to claim 3, wherein: the data correctness checking is divided into two types, namely direct checking and indirect checking, wherein the direct checking is that checking information is directly obtained from an information model without arithmetic operation and geometric operation, and the indirect checking is that the checking information is obtained through the arithmetic operation and the geometric operation, and the data correctness checking adopts the direct checking and the indirect checking to check BIM model data.
5. A construction cost management system based on BIM technology according to claim 1, wherein: the engineering quantity calculating unit comprises a budget manual cost module, a budget material cost module and a budget equipment cost module, wherein the budget manual cost module calculates the cost of field personnel, the cost of management personnel and the cost of designers, the budget material cost module calculates the cost of required materials and the cost of damaged materials, and the budget equipment cost module calculates the cost of all required equipment and the cost of equipment loss.
6. The construction cost management system based on the BIM technology according to claim 5, wherein: the checking unit comprises an actual cost module, an actual budget module and a deviation calculating module, wherein the actual cost module can collect all actual cost spent in each construction, the actual budget module calculates according to the data collected by the actual cost module and the contract amount calculated by the cost management unit by adopting a formula M, the calculation is divided into three types of labor cost, material cost and equipment cost, the deviation calculating module calculates a deviation value P between the cost calculated by the actual budget module and a time cost module, and the calculation formula of the deviation value P is that
Wherein B is the total cost of the construction.
7. A project cost management method based on BIM technology is characterized in that: the method comprises the following steps:
s1, a BIM construction unit creates a standardized BIM model and sends the BIM model to an engineering classification unit;
s2, the engineering classification unit classifies the BIM model and sends classified data to the comprehensive management unit;
s3, the comprehensive management unit processes and verifies the BIM model, identifies and converts model data and sends the model data to the engineering calculation unit;
s4, the engineering quantity calculation unit receives the data, performs inventory engineering quantity calculation and sends the inventory engineering quantity calculation to the construction cost management unit, and the construction cost management unit performs contract quantity calculation according to the engineering quantity;
s5, the checking unit calculates the actual cost and the actual budget cost of the project;
the BIM construction unit adopts Revit to carry out BIM model construction, revit adds primitives to carry out BIM model construction, the primitives comprise model primitives, reference primitives and view-specific primitives, the primitives comprise type attributes and instance attributes, the primitives, the type attributes and the instance attributes are combined into standard construction groups, predefined system groups and built-in target groups, and Revit adopts different groups to carry out composition, so that BIM model construction is completed;
the comprehensive management unit comprises a data processing module, a data verification module and a conversion module, wherein the data processing module receives the BIM model and outputs the BIM model into an IFC file, the data processing module sends the BIM model converted into the IFC file to the data verification module, the data verification module finds out errors in the IFC file and sends the errors to the BIM construction unit, and the conversion module identifies and converts BIM model data and sends the BIM model data to the engineering calculation unit;
the data verification module performs integrity verification and correctness verification on BIM data converted into IFCs, and the data verification module performs integrity verification on the BIM data, and the data verification module comprises the following steps:
step A1, creating a standard verification template of object names and attribute information, and writing the names of target objects and the names of attributes into the standard verification template respectively;
step A2, performing template matching, reading an IFC file to be detected, and searching in the IFC file by taking the object name of the standard verification template as a keyword;
a3, after the target object is positioned, comparing the attribute name and the effective value of the attribute value with the content of the standard verification template, counting the number of the target object and verifying whether the attribute of the object exists;
and step A4, finally classifying and outputting the counting result and the complete attribute condition of the target object in the IFC file, and sending the data of counting errors and incomplete attribute to the BIM construction unit.
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