CN115329448A - BIM-based fabricated building construction cost control method and system - Google Patents
BIM-based fabricated building construction cost control method and system Download PDFInfo
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Abstract
The invention discloses an assembly building construction cost control method and system based on BIM, and relates to the technical field of assembly building construction. According to the construction cost control method, the material cost of the building component, the energy consumption cost and the labor cost for assembling the building component are considered when the actual construction cost is calculated, so that the construction cost is calculated more accurately, the corresponding cost of the construction scheme of the next stage is ensured to be controlled more finely in the follow-up process, and the construction cost is controlled.
Description
Technical Field
The invention relates to the technical field of assembly type building construction, in particular to a BIM-based assembly type building construction cost control method and system.
Background
Along with the development of the building industry, the building technology is continuously innovated, the requirements of the building industry on the aspects of green, environmental protection, low carbon, energy conservation and the like are higher and higher at present, the assembled building conforms to the requirements of the times, the development is mature day by day, and the occupation ratio of the assembled building in the building industry is also continuously increased. The fabricated building is an environment-friendly building which is assembled and staggered on a construction site by prefabricated building components, and has the advantages of short construction period, accurate construction, easy maintenance and the like. However, the cost of the fabricated building is high, which limits the development of the fabricated building to some extent.
BIM is used as a highly integrated technology of information, has the advantages of simulation, digitization and the like, and at present, the BIM is applied to the research of assembly type buildings in the prior art, for example, the difference between the traditional construction management and the management by applying the BIM is analyzed, and the value of the BIM to the engineering construction is discussed; by analyzing the problems of construction cost management, the necessity of applying BIM to the construction cost control of the fabricated building is discussed; and the BIM is combined with an earned value method, so that the real-time deviation analysis of the cost and the construction period is realized. However, in the prior art, there are few schemes for controlling the construction cost of the fabricated building, and the existing control schemes are rough, so that it is difficult to realize fine cost control in the construction process.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a BIM-based fabricated building construction cost control method and system, wherein a BIM three-dimensional model of a fabricated building is constructed, construction progress information of a building project is added on the basis of the BIM three-dimensional model, and a BIM four-dimensional model is constructed to simulate the construction process of the whole project; and acquiring the project budget of the current construction stage based on the constructed model, comparing the project budget with the actual cost, and adjusting the construction scheme according to the comparison result, so as to realize the control of the refined and concrete construction cost of the fabricated building.
In a first aspect, the present disclosure provides a BIM-based fabricated building construction cost control method, including the following steps:
building a BIM three-dimensional model of the fabricated building;
adding construction progress information of a building project on the basis of the BIM three-dimensional model, and constructing a BIM four-dimensional model for simulating the construction process of the building project;
decomposing the construction process of a building project into a plurality of construction stages, and acquiring the project budget of the current construction stage based on a BIM four-dimensional model;
and calculating the actual cost of the construction scheme in the current construction stage according to the construction scheme corresponding to the current construction stage, comparing and analyzing the actual cost and the engineering budget, judging whether the current construction scheme needs to be corrected or not according to the cost deviation, and adjusting the construction scheme in the next construction stage to control the construction cost.
According to the further technical scheme, a BIM three-dimensional model of the fabricated building is constructed by utilizing BIM modeling software, the BIM three-dimensional model is added with basic information of building components, and the basic information comprises material information, size information and engineering quantity information.
According to the further technical scheme, the BIM four-dimensional model comprises a BIM three-dimensional model and a construction progress plan, the construction progress plan is set manually in a construction preparation stage, and corresponding construction starting time and construction ending time are added to the building elements contained in the BIM three-dimensional model, so that the association between the building elements and the construction project progress is established.
According to the further technical scheme, the construction scheme corresponding to the current construction stage comprises the selection of building components and the selection of an assembly scheme.
According to the further technical scheme, based on the BIM four-dimensional model, the engineering budget of the current construction stage is obtained, and the method specifically comprises the following steps:
simulating the current construction stage based on the BIM four-dimensional model of the fabricated building, deriving the engineering quantity information of the BIM three-dimensional model corresponding to the construction stage in the simulation process, importing the engineering quantity information into BIM pricing software, and obtaining the engineering budget of the current construction stage by combining a market price library, wherein the engineering budget is the planning cost of the current construction stage of the building project.
According to a further technical scheme, the construction scheme comprises a plurality of different construction processes arranged according to a time sequence, each construction process comprises different building components and assembly modes of the building components, the cost of the building components in the construction processes is obtained through comprehensive quantitative calculation, and then the cost of the construction processes and the construction scheme is calculated.
In a further aspect, the cost of the building element includes the material cost of the building element itself as well as the energy and labor costs of assembling the building element.
According to the further technical scheme, the actual cost and the engineering budget are compared and analyzed, the cost deviation is calculated, and whether the current construction scheme needs to be corrected or not is judged according to the comparison between the cost deviation and a set threshold value; specifically, if the cost deviation is greater than a set threshold, the construction scheme of the next stage needs to be adjusted to control the construction cost; otherwise, the construction of the next stage is directly carried out.
According to the further technical scheme, when the cost deviation is larger than a set threshold value, the cost deviation is traced, cost deviation analysis is carried out based on a BIM and earned value method, deviation analysis of construction process cost and time is carried out, and specific deviation rectifying measures are provided according to actual conditions.
In a second aspect, the present disclosure provides a BIM-based assembly type building construction cost control system, including:
the BIM three-dimensional model building module is used for building a BIM three-dimensional model of the fabricated building;
the BIM four-dimensional model building module is used for adding construction project construction progress information on the basis of the BIM three-dimensional model, building the BIM four-dimensional model and simulating the construction process of the construction project;
the construction cost control module is used for decomposing the construction process of the building project into a plurality of construction stages, and acquiring the project budget of the current construction stage based on the BIM four-dimensional model; and calculating the actual cost of the construction scheme in the current construction stage according to the construction scheme corresponding to the current construction stage, comparing and analyzing the actual cost and the engineering budget, judging whether to correct the current construction scheme according to the cost deviation, and adjusting the construction scheme in the next construction stage to control the construction cost.
The above one or more technical solutions have the following beneficial effects:
1. the invention provides a method and a system for controlling construction cost of an assembly building based on BIM, which are characterized in that a BIM three-dimensional model of the assembly building is constructed, construction progress information of a building project is added on the basis of the model, a BIM four-dimensional model is constructed, an engineering budget of a current construction stage is obtained based on the constructed model, the engineering budget is compared with an actual cost, and whether a construction scheme of a next construction stage needs to be adjusted or not is judged according to a comparison result, so that the control of refined and specific construction cost of the assembly building is realized.
2. In the invention, in the calculation process of the construction cost, the cost and the labor cost of the building components are considered, a large amount of energy consumption cost possibly generated for completing project construction in a short time is also considered, the factors influencing the construction cost are considered more comprehensively, the calculation of the construction cost is more accurate, and the control of the subsequent construction cost is ensured to be more precise.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a flowchart illustrating an overall method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a method according to an embodiment of the present invention.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Example one
The embodiment provides a BIM-based fabricated building construction cost control method, as shown in FIG. 1, including the following steps:
building a BIM three-dimensional model of the fabricated building;
adding construction progress information of a building project on the basis of the BIM three-dimensional model, and constructing a BIM four-dimensional model for simulating the construction process of the building project;
decomposing the construction process of a building project into a plurality of construction stages, and acquiring the project budget of the current construction stage based on a BIM four-dimensional model;
and calculating the actual cost of the construction scheme in the current construction stage according to the construction scheme corresponding to the current construction stage, comparing and analyzing the actual cost and the engineering budget, judging whether the current construction scheme needs to be corrected or not according to the cost deviation, and adjusting the construction scheme in the next construction stage to control the construction cost.
In the present embodiment, first, a BIM three-dimensional model of the prefabricated building is constructed using BIM modeling software, which appends basic information of the building elements, including material information, size information, engineering quantity information, and the like. At present, there are many software capable of performing BIM3D modeling, including Revit, bentley, archiCAD, CATLA, and the like, and in this embodiment, revit, which is the BIM modeling software, is used to construct a BIM three-dimensional model of an assembly building. The BIM three-dimensional model can be used for virtually displaying the building, inquiring basic information of each building component of the building, and simultaneously adding other information on the basis of the three-dimensional information model to expand the building into a new information model.
The concrete steps for constructing the BIM three-dimensional model of the fabricated building comprise: the method comprises the steps that two-dimensional electronic version drawings of the fabricated building are used as bases, the two-dimensional electronic version drawings are optimized, namely technical reviews are developed according to technical personnel in multiple professional fields (including but not limited to technical personnel in building major, structure major, water conservancy major, heating and ventilation major and electric major), solutions are provided for technical problems which can be generated in all the major in the schemes, a BIM leader customizes a BIM plan of the project according to meeting decisions, and professional designers develop work according to the BIM plan; taking the optimized two-dimensional electronic version drawing as a basis, technicians in various professional fields build standards according to the primary model, and carrying out mutual fund raising for the first time to complete the building work of the BIM three-dimensional model primary model; after the BIM three-dimensional model initial model is completed, technical personnel in various professional fields are organized to carry out core model checking on the BIM initial model, a solution is given to the problems appearing in the model, and the problems are written into a core model report; according to the BIM initial model checking record, technicians in various professional fields carry out model investment improvement according to nodes, and the BIM model is deepened according to the modeling depth and the standard in the BIM, so that the BIM three-dimensional model is built and completed.
In order to realize the control of the cost of the assembly type building construction project, the construction progress information of the building project is added on the basis of the BIM three-dimensional model to form a BIM four-dimensional model, namely, a member-progress associated information model containing a time dimension, and the three-dimensional information model and the construction progress plan can be associated to realize the progress management of the assembly type building construction project. Specifically, the BIM four-dimensional model comprises a BIM three-dimensional model and a construction progress plan, the construction progress plan is manually set in a construction preparation stage, corresponding construction starting time and construction ending time are added to building components contained in the BIM three-dimensional model, and accordingly, association between the building components and project progress is established, each building component further contains time information, and simulation and drilling of the project construction process can be achieved.
And then, decomposing the construction process of the building project into a plurality of construction stages, formulating a construction scheme according to actual conditions for a certain construction stage, wherein the construction scheme comprises selection of building components and selection of an assembly scheme, namely, formulating the construction scheme according to the actual conditions in the construction stage, selecting the corresponding building components and determining the assembly mode formed according to the building components. In fact, each construction stage can be decomposed into a plurality of construction processes, and the construction scheme includes a plurality of different construction processes arranged in time sequence.
As shown in fig. 2, based on the fabricated building BIM four-dimensional model constructed above, the construction phase is simulated by using a construction simulation technique, in the simulation process, the engineering quantity information corresponding to the BIM three-dimensional model in the construction phase is derived, the engineering quantity information is imported into BIM pricing software, and the engineering budget in the construction phase is obtained by combining a market price library, and is the planning cost of the construction phase of the building project. Furthermore, based on the calculated engineering budget, the reasonability judgment can be artificially carried out according to the actual situation, and the engineering budget is modified to obtain the final engineering budget.
Based on the construction scheme, the actual cost of the construction stage is calculated in the construction process. The construction scheme comprises a plurality of different construction processes arranged in time sequence, each construction process comprises different building components and the assembly mode of the building components, the cost of the building components in a certain construction process is obtained through comprehensive and quantitative calculation, the cost of the construction process is obtained through calculation, and the total cost of the construction scheme adopted in the construction stage is further obtained. In this embodiment, the cost of the building element includes the material cost of the building element itself, as well as the energy and labor costs of assembling the building element.
Specifically, the construction scheme compriseslThe total cost of the construction scheme is the sum of the costs of all the construction procedures, namely:
in the above formula, the first and second carbon atoms are,Erepresents the total cost of the construction solution,
is shown askThe cost of each construction process.
The cost of each construction process is the cost of all the building elements involved in the construction process, i.e. including the material cost of all the building elements, the energy consumption cost and the labor cost of assembling the respective building elements, i.e.:
in the above formula, each construction process comprisesmA building element, use of which is assemblednThe mechanical equipment is a piece of mechanical equipment,
showing assembly ofiFor use by individual building elementsjThe power of the mechanical device is controlled by the power control system,
showing assembly ofiFor individual building elementsjThe working time of the mechanical device is long,
is shown asiThe material costs of the individual building elements, which are known,
showing assembly ofiThe labor cost of the individual building elements. Further, the labor cost can be calculated according to the personnel and the consumed time corresponding to the completion of the construction process.
And calculating the actual cost of the construction scheme formulated at the construction stage through the scheme. And then, comparing and analyzing the project budget and the actual cost, calculating the cost deviation, and judging whether to correct the current construction scheme or not according to the comparison between the cost deviation and a set threshold value. Specifically, if the cost deviation is smaller than a set threshold, the construction of the next stage is directly carried out; otherwise, if the cost deviation is greater than the set threshold, the construction scheme of the next stage needs to be adjusted to control the construction cost.
And when the cost deviation is greater than a set threshold value, tracing the cost deviation, analyzing the cost deviation based on the BIM platform, formulating corresponding deviation-correcting measures according to the analyzed and determined cost deviation reasons, uploading the deviation-correcting measures to the BIM platform, simulating different improved schemes by using a construction simulation technology, determining an optimal construction scheme, and performing a next construction stage by using the optimal construction scheme to form closed-loop construction cost control.
In this embodiment, the cost deviation analysis based on the BIM platform specifically refers to a cost deviation analysis based on the BIM and an earned value method, the earned value method can compare a plan of any time point of a project with an actual situation, find out a deviation of each task, and a constructor or a manager can comprehensively evaluate the actual situation of the project according to the deviation and predict, adjust and control the remaining tasks. Specifically, the BIM technology is combined with a earner value analysis method, the WBS work task is decomposed, deviation analysis of construction process cost and time is carried out, and various specific deviation rectifying measures are provided according to actual conditions.
Example two
The embodiment provides an assembly type building construction cost control system based on BIM, includes:
the BIM three-dimensional model building module is used for building a BIM three-dimensional model of the fabricated building;
the BIM four-dimensional model building module is used for adding construction progress information of a construction project on the basis of the BIM three-dimensional model, building the BIM four-dimensional model and simulating the construction process of the construction project;
the construction cost control module is used for decomposing the construction process of the building project into a plurality of construction stages, and acquiring the project budget of the current construction stage based on the BIM four-dimensional model; and formulating a construction scheme corresponding to the current construction stage, calculating the actual cost of the construction scheme in the current construction stage, carrying out comparative analysis on the actual cost and the engineering budget, judging the feasibility of the construction scheme according to the cost deviation, and adjusting the construction scheme to control the construction cost.
The steps related to the second embodiment correspond to the first embodiment of the method, and the detailed description thereof can be found in the relevant description of the first embodiment.
Those skilled in the art will appreciate that the modules or steps of the present invention described above can be implemented using general purpose computer means, or alternatively, they can be implemented using program code that is executable by computing means, such that they are stored in memory means for execution by the computing means, or they are separately fabricated into individual integrated circuit modules, or multiple modules or steps of them are fabricated into a single integrated circuit module. The present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive changes in the technical solutions of the present invention.
Claims (10)
1. A BIM-based fabricated building construction cost control method is characterized by comprising the following steps:
constructing a BIM three-dimensional model of the fabricated building;
adding construction progress information of a building project on the basis of the BIM three-dimensional model, and constructing a BIM four-dimensional model for simulating the construction process of the building project;
decomposing the construction process of a building project into a plurality of construction stages, and acquiring the project budget of the current construction stage based on a BIM four-dimensional model;
and calculating the actual cost of the construction scheme in the current construction stage according to the construction scheme corresponding to the current construction stage, comparing and analyzing the actual cost and the engineering budget, judging whether the current construction scheme needs to be corrected or not according to the cost deviation, and adjusting the construction scheme in the next construction stage to control the construction cost.
2. The BIM-based assembly building construction cost control method according to claim 1, wherein a BIM three-dimensional model of the assembly building is constructed by using BIM modeling software, the BIM three-dimensional model is added with basic information of building components, and the basic information comprises material information, size information and engineering quantity information.
3. The BIM-based assembly type building construction cost control method according to claim 1, wherein the BIM four-dimensional model includes a BIM three-dimensional model and a construction schedule, the construction schedule is manually set at a construction preparation stage, and a construction start time and a construction end time are added to the building elements included in the BIM three-dimensional model, thereby establishing the association between the building elements and the construction project schedule.
4. The BIM-based assembly building construction cost control method according to claim 1, wherein the construction plan corresponding to the current construction stage comprises selection of building components and selection of an assembly plan.
5. The BIM-based fabricated building construction cost control method as claimed in claim 1, wherein the BIM-based four-dimensional model is used for obtaining the engineering budget of the current construction stage, and specifically comprises:
simulating the current construction stage based on the BIM four-dimensional model of the fabricated building, deriving the engineering quantity information of the BIM three-dimensional model corresponding to the construction stage in the simulation process, importing the engineering quantity information into BIM pricing software, and obtaining the engineering budget of the current construction stage by combining a market price library, wherein the engineering budget is the planning cost of the current construction stage of the building project.
6. The BIM-based assembly building construction cost control method according to claim 1, wherein the construction plan comprises a plurality of different construction processes arranged in time sequence, each construction process comprises different building components and assembly modes of the building components, the cost of the building components included in the construction process is obtained through comprehensive quantitative calculation, and the cost of the construction process and the construction plan is further calculated.
7. The BIM-based fabricated building construction cost control method according to claim 6, wherein the cost of the building elements includes material cost of the building elements themselves and energy consumption cost and labor cost for assembling the building elements.
8. The BIM-based assembly type building construction cost control method as claimed in claim 1, wherein the actual cost and the engineering budget are compared and analyzed, the cost deviation is calculated, and whether the current construction scheme needs to be corrected is judged according to the comparison between the cost deviation and the set threshold; specifically, if the cost deviation is greater than a set threshold, the construction scheme of the next stage needs to be adjusted to control the construction cost; otherwise, the construction of the next stage is directly carried out.
9. The BIM-based fabricated building construction cost control method as claimed in claim 8, wherein when the cost deviation is larger than the set threshold, the cost deviation is traced, the cost deviation analysis is performed based on BIM and earned value method, the deviation analysis of construction process cost and time is performed, and the specific deviation rectifying measure is provided according to the actual situation.
10. The utility model provides an assembly type structure construction cost control system based on BIM, characterized by includes:
the BIM three-dimensional model building module is used for building a BIM three-dimensional model of the fabricated building;
the BIM four-dimensional model building module is used for adding construction project construction progress information on the basis of the BIM three-dimensional model, building the BIM four-dimensional model and simulating the construction process of the construction project;
the construction cost control module is used for decomposing the construction process of the building project into a plurality of construction stages, and acquiring the project budget of the current construction stage based on the BIM four-dimensional model; and calculating the actual cost of the construction scheme in the current construction stage according to the construction scheme corresponding to the current construction stage, comparing and analyzing the actual cost and the engineering budget, judging whether to correct the current construction scheme or not according to the cost deviation, and adjusting the construction scheme in the next construction stage to control the construction cost.
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| CN117113521A (en) * | 2023-10-25 | 2023-11-24 | 中国建筑第六工程局有限公司 | PC component arrangement method and system based on BIM technology |
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