CN117252654B - Engineering cost calculation system and method based on Revit model - Google Patents
Engineering cost calculation system and method based on Revit model Download PDFInfo
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Abstract
The invention discloses a project cost calculation system and a project cost calculation method based on a Revit model, wherein the calculation method adopts a cost calculation system to work, the system comprises a Revit model generation module, a cost estimation module and a recommendation ordering module, the Revit model generation module is used for generating a three-dimensional model of a building in a three-dimensional coordinate system, the cost calculation module is used for calculating the total cost and the real-time cost of the design scheme, the recommendation ordering module is used for ordering materials and equipment in an alternative column according to budgets and recommendation weights, the Revit model generation module comprises a parameter establishment module, a model retrieval module, a big data fitting module, a three-dimensional coordinate system establishment module and a model library, the parameter establishment module is used for inputting the type, layout, area and height parameters of the building, and the model retrieval module is used for retrieving the building model required by the load according to the input parameters.
Description
Technical Field
The invention relates to the technical field of engineering cost, in particular to an engineering cost calculation system and method based on a Revit model.
Background
The Revit model includes various data of the three-dimensional geometry of the building, component properties, material information, equipment and system components, and the like. The Revit model can provide visual effect graphs and animation presentations for building projects, so that customers can better understand and evaluate building design schemes.
The existing construction engineering cost calculation mode is to design first, price according to the design result, and often the situation that the budget is exceeded occurs, at this time, the designer needs to plan and adjust again, and real-time cost evaluation and material selection recommendation cannot be carried out on the design. Therefore, it is necessary to design a construction cost computing system and method based on a Revit model for real-time evaluation.
Disclosure of Invention
The invention aims to provide a project cost calculation system and method based on a Revit model, which are used for solving the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the project cost calculating method based on the Revit model adopts a cost calculating system to work, the system comprises a Revit model generating module, a cost estimating module and a recommended sorting module, the Revit model generating module is used for generating a three-dimensional model of a building in a three-dimensional coordinate system, the cost calculating module is used for calculating the total cost and the real-time cost of the design scheme, and the recommended sorting module is used for sorting materials and equipment in an alternative column according to budgets and recommended weights.
According to the technical scheme, the Revit model generation module comprises a parameter establishment module, a model retrieval module, a big data fitting module, a three-dimensional coordinate system establishment module and a model library, wherein the parameter establishment module is used for inputting the type, layout, area and height parameters of a building, the model retrieval module is used for retrieving a building model required by a load according to the input parameters, the big data fitting module is used for carrying out big data-based close fitting on the building model conforming to the model library, the three-dimensional coordinate system establishment module is used for establishing a meshed three-dimensional model for placing the building model, and the model library is used for storing the designed building model;
the manufacturing cost estimation module comprises a type distinguishing module, a volume calculation module, a material equipment determination module and a unit cost measurement module, wherein the type distinguishing module is used for establishing a specific type of a current design building, the volume calculation module is used for calculating the occupied space of a building model, the material equipment determination module is used for selecting all materials and equipment types of the current building model, and the unit cost measurement module is used for calculating the material cost of a unit area and the equipment cost of a unit volume;
the recommendation ordering module comprises an alternative display module, an ordering establishment module and a weight adjustment module, wherein the alternative display module is used for selecting and displaying alternative materials and equipment in a current design area for a designer to select, the ordering establishment module is used for ordering the manufacturing cost of various materials and equipment and establishing the ordering of recommended materials and equipment manufacturing cost, and the weight adjustment module is used for adjusting the recommendation weight according to the evaluation of the designer and a building owner;
the weight adjustment module comprises a timing module, an evaluation module and a selection frequency calculation module, wherein the timing module is used for counting the service life of a certain building design, the evaluation module is used for carrying out return visit evaluation on a building owner, and the selection frequency calculation module is used for calculating the frequency of adopting a certain material or equipment by a designer.
According to the technical scheme, the method comprises the following main steps:
s1, a designer generates a preliminary three-dimensional model by using a Revit model according to the requirements and planning of the building engineering design, wherein the model content is the main structure and appearance characteristics of the building;
s2, estimating according to the average cost in the model library, and primarily estimating the cost of the design scheme according to the building type and combining the average cost data in the model library;
s3, determining the type recommended range of materials and equipment according to the cost budget of the design scheme;
s4, combining historical evaluation and market feedback, and arranging alternative materials and equipment;
s5, calculating the current cost in real time, and when the type selection is carried out, calculating in real time according to the current cost, and adjusting the type recommended subsequently, so that the design scheme is economically feasible;
s6, after the final type selection is determined, determining the engineering cost of the design.
According to the above technical solution, in the step S1, a method for generating a preliminary three-dimensional model is as follows: after the type, layout, area and height parameters of the building are determined, the Revit model software can search a model library, select finished products in the model library which are the same in type and layout and similar in area and height parameters, fit a rough building model shape, place the building model in a grid-shaped three-dimensional coordinate system, drag lines at the edges of the model by a mouse for fine adjustment of a designer, and automatically attach the lines on grids of the nearest three-dimensional coordinate system.
According to the above technical scheme, in the step S2, the method for performing preliminary estimation on the manufacturing cost is as follows: naming building types of each component in the three-dimensional model, selecting unit volume cost of all the building types in the model library to average, and finally calculating total preliminary cost Wherein->Cost per unit material for a certain building type in the model base,/-, for>Cost per unit equipment for a certain building type in model base,/->For the number of building types>Is the volume of a certain building type in the present design.
According to the technical scheme, in the step S3, all suitable alternative materials and equipment of the current building type are firstly ordered according to the price, and then the cost budget according to the current design scheme isAnd total preliminary costIs recommended for materials and equipment according to the cost sequence and extends upwards and downwards by a certain proportion +.>Alternatively, specifically:
the average cost of the materials and equipment used by the current building type is that the cost of all the materials and equipment suitable for the current building type is ordered as beforeEach material and equipment has independent ordering, and the materials and equipment recommended by the design are ordered before the manufacturing cost of all materials and equipment suitable for the current building type is increased>The formula is:
；
cost budget for this designThe higher the recommended materials and equipment cost ordering the earlier, the recommended range of alternative materials and equipment is: />。
According to the above technical solution, in the step S4, the specific method for arranging the alternative materials and devices is as follows:
the recommendation weight is introduced, materials and equipment with higher recommendation weight are displayed at more prominent positions in the candidate bar, each material and equipment has a respective evaluation system, the evaluation system is divided into designer favor and building owner satisfaction, and the recommendation weight is calculated according to the evaluation systemThe method comprises the following steps: />Wherein->Average favour for designers of a certain material, equipment,/->For average satisfaction of building owners of a certain material and equipment, when the certain material and equipment are in the alternative columns and selected by designers, the favorability is improved, when the certain material and equipment are in the alternative columns and are not selected, the favorability is reduced, the favorability is unchanged in the alternative columns, the building owners are revisited every fixed period when the satisfaction is investigated, and when the certain material and equipment are given poor feedback by the building owners, the satisfaction of the building owners is reduced>，/>、/>Respectively mean by the designerWeight coefficients for favorability and average satisfaction of building owners.
According to the above technical solution, in the above step S5, when a designer uses a certain material or equipment, firstly, a model pattern using the material or equipment is generated on the Revit model software, and is brought into the three-dimensional coordinate system to obtain the coverage area of the material, and the model and size of the equipment, the cost is calculated by combining the cost of the material and the equipment, and if the cost budget remaining in the design is exceeded, the cost ordering of the subsequent non-design area is reducedIf the remaining cost budget of the design scheme is not reached, the cost ordering of the subsequent non-design area is improved>Become newThe method specifically comprises the following steps: />=/>；
In the method, in the process of the invention,in order to achieve the cost, i.e. the total cost calculated for the materials and equipment that have been selected by the designer,setting the cost for the standard, i.e. the total material is according to +.>The total cost achieved when designing the cost ordering of (c).
Compared with the prior art, the invention has the following beneficial effects: the invention firstly generates a rough three-dimensional model before building design, then estimates the cost of the design according to the average cost in a model library, and when the type is specifically selected, arranges and recommends alternative types according to historical evaluation, simultaneously calculates the current cost in real time and adjusts the type recommended subsequently.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 is a schematic view of the overall module structure of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides the following technical solutions: the project cost calculating method based on the Revit model adopts a cost calculating system to work, the system comprises a Revit model generating module, a cost estimating module and a recommended sorting module, the Revit model generating module is used for generating a three-dimensional model of a building in a three-dimensional coordinate system, the cost calculating module is used for calculating the total cost and the real-time cost of the design scheme, and the recommended sorting module is used for sorting materials and equipment in an alternative column according to budgets and recommended weights;
the Revit model generation module comprises a parameter establishment module, a model retrieval module, a big data fitting module, a three-dimensional coordinate system establishment module and a model library, wherein the parameter establishment module is used for inputting the type, layout, area and height parameters of a building, the model retrieval module is used for retrieving a building model required by a load according to the input parameters, the big data fitting module is used for carrying out big data-based close fitting on the building model conforming to the model library, the three-dimensional coordinate system establishment module is used for establishing a gridded three-dimensional model for placing the building model, and the model library is used for storing the designed building model;
the manufacturing cost estimation module comprises a type distinguishing module, a volume calculation module, a material equipment determination module and a unit cost measurement module, wherein the type distinguishing module is used for establishing a specific type of a current design building, the volume calculation module is used for calculating the occupied space of the building model, the material equipment determination module is used for selecting all materials and equipment types of the current building model, and the unit cost measurement module is used for calculating the material cost of a unit area and the equipment cost of the unit volume;
the recommendation ordering module comprises an alternative display module, an ordering establishment module and a weight adjustment module, wherein the alternative display module is used for selecting and displaying alternative materials and equipment in a current design area for a designer to select, the ordering establishment module is used for ordering the manufacturing cost of various materials and equipment and establishing the ordering of recommended materials and equipment manufacturing cost, and the weight adjustment module is used for adjusting the recommendation weight according to the evaluation of the designer and a building owner;
the weight adjustment module comprises a timing module, an evaluation module and a frequency selection calculation module, wherein the timing module is used for counting the service life of a certain building design, the evaluation module is used for carrying out return visit evaluation on a building owner, and the frequency selection calculation module is used for calculating the frequency of adopting a certain material or equipment by a designer;
the method comprises the following main steps:
s1, a designer generates a preliminary three-dimensional model by using a Revit model according to the requirements and planning of the building engineering design, wherein the model content is the main structure and appearance characteristics of the building;
s2, estimating according to the average cost in the model library, and primarily estimating the cost of the design scheme according to the building type and combining the average cost data in the model library;
s3, determining the type recommended range of materials and equipment according to the cost budget of the design scheme;
s4, combining historical evaluation and market feedback, and arranging alternative materials and equipment;
s5, calculating the current cost in real time, and when the type selection is carried out, calculating in real time according to the current cost, and adjusting the type recommended subsequently, so that the design scheme is economically feasible;
s6, after determining the final type selection, determining the engineering cost of the design;
in the step S1, a preliminary three-dimensional model is generated by: after the type, layout, area and height parameters of the building are determined, the Revit model software can search a model library, select finished products in the model library which are the same in type and layout and similar in area and height parameters, fit a rough building model shape, place the building model in a grid-shaped three-dimensional coordinate system, drag lines at the edge of the model by a mouse for fine adjustment of a designer, and automatically attach the lines on grids of the nearest three-dimensional coordinate system;
in the step S2, the method for performing preliminary estimation on the cost includes: naming building types of each component in the three-dimensional model, selecting unit volume cost of all the building types in the model library to average, and finally calculating total preliminary cost，Wherein->Cost per unit material for a certain building type in the model base,/-, for>Cost per unit equipment for a certain building type in model base,/->For the number of building types>In the design ofThe volume of a certain building type;
in the step S3, all suitable alternative materials and equipment of the current building type are firstly ordered according to the price, and then the cost budget according to the design scheme isAnd total preliminary cost->Is recommended for materials and equipment according to the cost sequence and extends upwards and downwards by a certain proportion +.>Alternatively, specifically:
the average cost of the materials and equipment used by the current building type is that the cost of all the materials and equipment suitable for the current building type is ordered as beforeEach material and equipment has independent ordering, and the materials and equipment recommended by the design are ordered before the manufacturing cost of all materials and equipment suitable for the current building type is increased>The formula is: />；
Cost budget for this designThe higher the recommended materials and equipment cost ordering the earlier, the recommended range of alternative materials and equipment is: />；
In the step S4, the specific method for arranging the alternative materials and devices is as follows:
introducing a recommendation weight, the higher the recommendation weight, the material andthe equipment can be displayed in a more prominent position in the alternative column, each material and equipment has a respective evaluation system, the evaluation system is divided into a designer favor degree and a building owner satisfaction degree, and the recommendation weights are used for recommendationThe method comprises the following steps: />Wherein->Average favour for designers of a certain material, equipment,/->For average satisfaction of building owners of a certain material and equipment, when the certain material and equipment are in the alternative columns and selected by designers, the favorability is improved, when the certain material and equipment are in the alternative columns and are not selected, the favorability is reduced, the favorability is unchanged in the alternative columns, the building owners are revisited every fixed period when the satisfaction is investigated, and when the certain material and equipment are given poor feedback by the building owners, the satisfaction of the building owners is reduced>，/>、/>Respectively the average degree of favour of the designer and the average degree of satisfaction of the building owners;
in the above step S5, when a designer uses a certain material or equipment, firstly, a model pattern using the material or equipment is generated on the Revit model software, and is brought into a three-dimensional coordinate system to obtain the coverage area of the material, and the model and size of the equipment, the cost is calculated by combining the cost of the material and the equipment, and if the remaining cost budget of the design scheme is exceeded, the subsequent un-design is reducedCost ordering of regionsIf the remaining cost budget of the design scheme is not reached, the cost ordering of the subsequent non-design area is improved>Become new->The method specifically comprises the following steps:
=/>
in the method, in the process of the invention,in order to achieve the cost, i.e. the total cost calculated for the materials and equipment that have been selected by the designer,setting the cost for the standard, i.e. the total material is according to +.>The total cost achieved when designing the cost ordering of (c).
In the above step S2, the building types are classified into residential building, commercial building, industrial building, educational building, medical building, cultural building, sports building, and the division in advance is helpful for more accurate cost calculation due to the great difference in materials and structures of the building with different functions.
The building type is further subdivided into functional types such as meeting rooms, kitchens, terraces and the like, and is a large type of vertical subdivision small type.
The alternative materials in the step S4 include wall materials, roof materials, door and window materials and floor materials,
the equipment includes heating equipment, ventilation equipment, power equipment, water supply equipment and the like.
In the above-mentioned step S4,and->Adjustment according to the age of the material or device, < > or->And->The adjustment method of (2) is that, in the early stage of the use of the material or the equipment on the building, the satisfaction of the building owners is +.>All will be deficient and high, thus decreasing satisfaction->To increase the weight of the design person to favor the degree +.>Because of the sufficient experience of the designer, the more favored solution should be more prominently presented, reducing the screening cost of the subsequent designs, and as the service life is prolonged, problems with materials or equipment will develop, and many building owners will feed back materials or equipment that have a low life or are in problem during use, thereby improving satisfaction>To correspondingly reduce the weight of the design person>The specific formula is as follows:
，
wherein the method comprises the steps ofFor the service life of the current material or device in the building, < >>The critical period for which problems easily occur is set according to actual conditions.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The engineering cost calculation system based on the Revit model is characterized in that: the system comprises a Revit model generation module, a cost estimation module and a recommendation ordering module, wherein the Revit model generation module is used for generating a three-dimensional model of a building in a three-dimensional coordinate system, the cost estimation module is used for calculating the total cost and the real-time cost of the design scheme, and the recommendation ordering module is used for ordering materials and equipment in an alternative column according to budget and recommendation weight;
the Revit model generation module comprises a parameter establishment module, a model retrieval module, a big data fitting module, a three-dimensional coordinate system establishment module and a model library, wherein the parameter establishment module is used for inputting the type, layout, area and height parameters of a building, the model retrieval module is used for retrieving a building model required by a load according to the input parameters, the big data fitting module is used for carrying out big data-based close fitting on the building model conforming to the model library, the three-dimensional coordinate system establishment module is used for establishing a gridded three-dimensional model for placing the building model, and the model library is used for storing the designed building model;
the manufacturing cost estimation module comprises a type distinguishing module, a volume calculation module, a material equipment determination module and a unit cost measurement module, wherein the type distinguishing module is used for establishing a specific type of a current design building, the volume calculation module is used for calculating the occupied space of a building model, the material equipment determination module is used for selecting all materials and equipment types of the current building model, and the unit cost measurement module is used for calculating the material cost of a unit area and the equipment cost of a unit volume;
the recommendation ordering module comprises an alternative display module, an ordering establishment module and a weight adjustment module, wherein the alternative display module is used for selecting and displaying alternative materials and equipment in a current design area for a designer to select, the ordering establishment module is used for ordering the manufacturing cost of various materials and equipment and establishing the ordering of recommended materials and equipment manufacturing cost, and the weight adjustment module is used for adjusting the recommendation weight according to the evaluation of the designer and a building owner;
the weight adjustment module comprises a timing module, an evaluation module and a selected frequency calculation module, wherein the timing module is used for counting the service life of a certain building design, the evaluation module is used for carrying out return visit evaluation on a building owner, and the selected frequency calculation module is used for calculating the frequency of adopting a certain material or equipment by a designer;
the method comprises the following main steps:
s1, a designer generates a preliminary three-dimensional model by using a Revit model according to the requirements and planning of the building engineering design, wherein the model content is the main structure and appearance characteristics of the building;
s2, estimating according to the average cost in the model library, and primarily estimating the cost of the design scheme according to the building type and combining the average cost data in the model library;
s3, determining the type recommended range of materials and equipment according to the cost budget of the design scheme;
s4, combining historical evaluation and market feedback, and arranging alternative materials and equipment;
s5, calculating the current cost in real time, and when the type selection is carried out, calculating in real time according to the current cost, and adjusting the type recommended subsequently, so that the design scheme is economically feasible;
s6, after determining the final type selection, determining the engineering cost of the design;
in the step S1, a preliminary three-dimensional model is generated by: after the type, layout, area and height parameters of the building are determined, the Revit model software can search a model library, select finished products in the model library which are the same in type and layout and similar in area and height parameters, fit a rough building model shape, place the building model in a grid-shaped three-dimensional coordinate system, drag lines at the edge of the model by a mouse for fine adjustment of a designer, and automatically attach the lines on grids of the nearest three-dimensional coordinate system;
in the step S2, the method for performing preliminary estimation on the cost includes: naming building types of each component in the three-dimensional model, selecting unit volume cost of all the building types in the model library to average, and finally calculating total preliminary cost W 0 ，W 0 ＝(A 1 +B 1 )v 1 +(A 2 +B 2 )v 2 +...+(A n +B n )v n Wherein A is the unit material cost of a certain building type in the model library, B is the unit equipment cost of a certain building type in the model library, n is the number of building types, and v isThe volume of a certain building type in the design;
in the step S3, all suitable alternative materials and equipment of the current building type are firstly ordered according to the price, and then the cost budget according to the current design scheme is W 1 And total preliminary cost W 0 Materials and equipment are recommended according to the cost sequence, and a certain proportion m% extends upwards and downwards as an alternative, specifically:
the average cost of materials and equipment used by the current building type is X% before the cost of all materials and equipment suitable for the current building type, each material and equipment has independent sequencing, the cost of materials and equipment recommended by the design is Y% before the cost of all materials and equipment suitable for the current building type is sequenced, and the formula is:
cost budget W for this design 1 The higher the recommended materials and equipment cost ordering the earlier, the recommended range of alternative materials and equipment is: [ X% -m%, X% +m ]]；
In the step S4, the specific method for arranging the alternative materials and devices is as follows:
the recommendation weight is introduced, materials and equipment with higher recommendation weight are displayed at more prominent positions in the candidate bar, each material and equipment has a respective evaluation system, the evaluation system is divided into a designer favor degree and a building owner satisfaction degree, and the recommendation weight H is specifically as follows: h=μd+τf, where D is the average designer preference of a material, device, F is the average satisfaction of the building owners of a material, device, and when a material, device appears in the candidate bar and is selected by the designer, the preference is increased, when a material, device appears in the candidate bar and is not selected, the preference is decreased, when a material, device does not appear in the candidate bar, the preference is unchanged, the building owners are revisited every fixed period when satisfaction is investigated, when a material, device is given poor feedback by the building owners, the satisfaction F of the building owners is decreased, μ, τ are the weight coefficients of the average designer preference and the average satisfaction of the building owners, respectively;
in the step S4, μ and τ are adjusted according to the service life of the material or the equipment, and the adjustment method of μ and τ is that, in the early stage of the use of the material or the equipment on the building, since the building owners will not find problems quickly, the satisfaction degree F of the building owners will be high, so the weight of the satisfaction degree F is reduced, the weight of the designer favoring the degree D is increased, the more favored scheme of the designer should be displayed more prominently, the screening cost of the subsequent design is reduced, the problem of the material or the equipment will develop gradually when the service life is prolonged, and many building owners will feed back the material or the equipment with problems in the service life or the use process, so the weight of the satisfaction degree F is increased to correspondingly reduce the weight of the designer favoring the degree D, and the specific formula is as follows:
wherein t is the service life of the current material or equipment on the building, t 0 Setting a critical period for easily causing problems according to actual conditions;
in the above step S5, when a designer uses a certain material or equipment, firstly, a model pattern using the material or equipment is generated on the Revit model software, and the model pattern is brought into a three-dimensional coordinate system to obtain the coverage area of the material, and the model and size of the equipment, the cost is calculated in combination with the cost of the material and the equipment, if the cost budget remaining in the design scheme is exceeded, the cost ordering Y% of the subsequent non-design area is reduced, and if the cost budget remaining in the design scheme is not reached, the cost ordering Y% of the subsequent non-design area is increased, and the new Y is changed 1 The specific steps are as follows:
in which W is 2 For the cost realized, i.e. the total cost calculated for the materials and equipment already selected by the designer, W 3 The cost is set for the standard, i.e. the total cost achieved when all materials are designed according to a cost order of Y%.
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