CN113011832A - Engineering cost system based on BIM - Google Patents
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Abstract
The invention discloses a BIM-based engineering cost system, which is used for solving the problem that dynamic cost data cannot be generated according to construction progress in the prior art; the engineering cost system comprises a standard modeling module, an information acquisition module, a data standardization module, a cost module and an accounting module; the standard modeling module is used for establishing a standardized model to realize the BIM modeling of the engineering cost, which is rapid and standardized; the information acquisition module is used for acquiring all information required by the standard modeling module; the data standardization module is used for standardizing the information acquired by the information acquisition module; the cost module is used for generating a cost list by combining standard modeling information; the accounting module is used for checking by combining the standard modeling and the cost list; the over-set information acquisition module carries out real-time monitoring to the construction condition, guarantees the timeliness of data, and through information feasible value, real-time regulation construction rhythm is guaranteed to accomplish the construction in the time limit for a project simultaneously.
Description
Technical Field
The invention belongs to the field of management systems, relates to a project cost technology, and particularly relates to a project cost system based on BIM.
Background
The direct meaning of the construction cost is the construction price of the project and the three elements of project pricing: amount, price, fee. In the construction process of large-scale engineering, engineering cost management software is often used to assist an engineering cost engineer in counting and calculating the data of the engineering cost. BIM (building information modeling), namely a building information model technology, has the characteristics of visualization, coordination, parameterization, simulation and the like; the three-dimensional model information database can help to realize the integration of building information, and various information is always integrated in the three-dimensional model information database from the design, construction and operation of a building to the end of the whole life cycle of the building. The conventional BIM technology is mainly used for simulating engineering projects in engineering construction so as to display and assist in design of the projects.
The BIM model is added into the engineering cost management system to perform auxiliary management on the engineering cost, data statistics can be used for more intuition and convenience, a cost engineer can manage the engineering cost data conveniently, the conventional BIM-based engineering cost management system can refer to a Chinese invention patent application document with the application publication number of CN109934565A, and the BIM-based engineering cost data management system comprises a man-machine operation module, a first data mining module, a data sorting module, a data positioning module, a second data mining module, a cost calculation module, a data retrieval and calling module, a data typesetting module and a central processing unit.
The existing BIM-based engineering cost management system is used for evaluating the engineering cost of a project according to an engineering project planning scheme, however, in the actual construction of the project, because the actual progress is not consistent with the planning progress, construction materials and personnel need to be adjusted, so that the cost data is influenced, the cost data needs to be adjusted in time, the existing BIM-based engineering cost management system cannot adjust the cost data according to the change of the personnel and the materials in the construction process, the input accounting needs to be carried out again, and the processing efficiency is low.
Disclosure of Invention
The invention aims to provide a BIM-based project cost system, which is used for solving the problem that dynamic cost data cannot be generated according to construction progress in the prior art.
The purpose of the invention can be realized by the following technical scheme:
the project cost system based on BIM comprises a standard modeling module, an information acquisition module, a data standardization module, a cost module and an accounting module;
the standard modeling module is used for establishing a standardized model to realize the BIM modeling of the engineering cost, which is rapid and standardized;
the information acquisition module is used for acquiring all information required by the standard modeling module;
the data standardization module is used for standardizing the information acquired by the information acquisition module;
the cost module is used for generating a cost list by combining standard modeling information;
the accounting module is used for checking by combining standard modeling and a cost list;
the construction cost module is used for generating a construction cost list by combining standard modeling information, and specifically comprises the following steps:
the method comprises the following steps: acquiring data information in a BIM standard model, and passing the data information through a formula
Obtaining an information feasible value, wherein Cx is an output actual value, namely an actual calculation value; rx is an input expected value or an approximate preset value; b isnIs the planned natural frequency; phi is a damping factor;
step two: when the feasibility of the data is greater than the damping factor, recording the data and generating the data into a corresponding cost list;
step three: when the data feasibility is smaller than the damping factor, sending the corresponding data to an accounting module for accounting;
step four: substituting data in the cost list into a formula
Obtaining an estimated cost, wherein Y is the estimated cost of the new project; y is0Engineering cost per unit production capacity; x is the production capacity of the new project; x0Capacity per unit; n is a regression index; a is a price variation factor; e is the price index of the building material; n is1From the year of price to the year of start of workCounting; n is2The number of years from the beginning of the work year to the end of the work year.
Further, the standard modeling module is used for establishing a standardized model to realize BIM modeling of the engineering cost, wherein the standard modeling module stores a modeling standardization strategy, and modeling input data needs to meet the modeling standardization strategy;
the modeling standardization strategy specifically comprises the steps that the same DWG file is used as a modeling basis, a relative elevation is used, and +/-0.000 is a coordinate point of a Z-axis of a coordinate origin, wherein in order to achieve consistency of the elevation, the elevations used by all specialties need to be unified, and if auxiliary elevations need to be added, corresponding professional codes need to be added before the elevations;
in order to make the models work correctly, a reference point (0,0,0) must be established, and the items (0,0,0) are unified by reference to the origin, wherein the principle is to set the shared origin of coordinates at the leftmost lower position of the building of the item;
the length is in millimeter units, and the unit format can be independently set at the size marking style in consideration of size marking and the like which do not need to display rounded 2 decimal places;
the area is in square meters, the volume is in cubic meters, the angle is in degrees, and the slope is in degrees;
according to the requirements of area division in construction, when a post-construction casting belt is encountered, corresponding component models are separately established;
according to the naming standard, models are divided into two categories, namely design models and construction models according to different use stages;
the design model refers to a partitioned model file which is established according to a design drawing and a certain storage mode; the construction model refers to a model which integrates design models into a structural system according to a certain rule, and specifically is a model applied to a construction stage;
in construction, a dangerous source position component is constructed, and as dangerous sources need to be counted in a platform, special modeling processing needs to be carried out on positions of a hole, an adjacent edge, an elevator shaft and the like in a model, corresponding floor families need to be established for the positions of the hole and the elevator shaft, and corresponding railing families need to be established for the positions adjacent to the edge;
for the establishment of the standard layer in the model, if the operation is carried out by adopting a component copying mode, the elevation of the copied layer needs to be changed into the elevation of the current layer, the operation of the elevation deviation of the copied layer cannot be referred, and the difference of component names is noticed;
when a construction model is created, before model operation is integrated, all references including models, drawings, auxiliary lines and the like are deleted; when the construction model is integrated, the whole integration process is completed by adopting the following steps: the consistency of a model, an elevation and a coordinate origin must be ensured in the whole process of binding and ungrouping a link rvt file-a link rvt file;
when the elevation of the model floor is defined, the elevation of a certain floor is from the bottom of a column or a wall to the top mark of the upper floor beam, and the elevations of other floors are not defined correctly; if an interlayer or a platform with a large area exists in a building, the interlayer or the platform also has a corresponding independent elevation system, the elevation nomenclature is marked, vertical members and the like must be built in layers, and the appearance of 'high-column access' and 'high-wall access' is strictly forbidden;
when the model creating fineness of a horizontal member and the like needs to pay attention to construction application, the division of areas, flow sections and the like is needed;
the modeling input data is used for building a BIM standard model.
Further, the information acquisition module is used for acquiring all information required by the standard modeling module, and specifically, all information required by the standard modeling module is acquired through the camera acquisition unit, the remote sensing acquisition unit and the aerial photography unit;
the camera shooting acquisition unit can be a camera around a building site and a camera of intelligent equipment; the remote sensing acquisition unit is a remote sensing satellite above a building site; the aerial photographing unit is specifically an aerial model with a photographing and transmitting function;
all information required by the standard modeling module comprises material list information, a personnel list and an engineering progress report; wherein the bill of materials information includes the usage and price of cement, steel bar and sandstone; the amount and price of green plants; the staff list comprises construction amount of single man-hour and construction price of single man-hour of each work type construction; the project progress report comprises the completion degree of a single project and the completion degree of the overall project;
the remote sensing satellite is mainly used for collecting construction progress information of large-scale fields, buildings and the like in a construction area; the aerial photography unit is mainly used for shooting pipeline laying, line laying and electromechanical equipment.
Furthermore, the checking module is used for checking in combination with the standard modeling and the cost list, and specifically, the checking is completed by comparing the information acquired by the information acquisition module with the cost module used for generating the cost list in combination with the standard modeling information and estimating the cost;
the comparison specifically comprises the steps of sending all information required by the modeling module to other engineering cost systems for re-modeling operation to obtain a comparison result, and taking the comparison result as a comparison example for comparison.
Further, the method is described.
Further, the construction cost of the unit production capacity is specifically the construction capacity of a construction party; the production capacity of the newly-built project, specifically, the initial estimated price of the project by the project side; the unit production capacity is obtained by multiplying the construction amount of a single man-hour of each work type construction by the construction duration; the regression index is a fixed value, specifically 0.43; the price variation factor specifically refers to market price fluctuation; the market price fluctuation is specifically worker price fluctuation, mechanical equipment price fluctuation and third-party detection mechanism price fluctuation.
Further, the expected value or the approximate estimated value of the input expected value is obtained through a feasibility report; the output actual value, namely the actual settlement value is obtained through a BIM standard model; the planned natural frequency is specifically the implementation period of the project; the damping factor is a fixed value, specifically 1.
Compared with the prior art, the invention has the beneficial effects that:
(1) through a modeling standardization strategy, the same DWG file is used as a modeling basis, a relative elevation is used, and +/-0.000 is a coordinate point of a Z axis of a coordinate origin, wherein in order to achieve consistency of the elevation, the elevations used by all specialties need to be unified, and if auxiliary elevations need to be increased actually, corresponding professional codes need to be increased in front of the elevation; in order to make the models work correctly, a reference point (0,0,0) must be established, and the items (0,0,0) are unified by reference to the origin, wherein the principle is to set the shared origin of coordinates at the leftmost lower position of the building of the item; the length is in millimeter units, and the unit format can be independently set at the size marking style in consideration of size marking and the like which do not need to display rounded 2 decimal places; the area is in square meters, the volume is in cubic meters, the angle is in degrees, and the slope is in degrees; according to the requirements of area division in construction, when a post-construction casting belt is encountered, corresponding component models are separately established; according to the naming standard, models are divided into two categories, namely design models and construction models according to different use stages; the design model refers to a partitioned model file which is established according to a design drawing and a certain storage mode; the construction model refers to a model which integrates design models into a structural system according to a certain rule, and specifically is a model applied to a construction stage; in construction, a dangerous source position component is constructed, and as dangerous sources need to be counted in a platform, special modeling processing needs to be carried out on positions of a hole, an adjacent edge, an elevator shaft and the like in a model, corresponding floor families need to be established for the positions of the hole and the elevator shaft, and corresponding railing families need to be established for the positions adjacent to the edge; for the establishment of the standard layer in the model, if the operation is carried out by adopting a component copying mode, the elevation of the copied layer needs to be changed into the elevation of the current layer, the operation of the elevation deviation of the copied layer cannot be referred, and the difference of component names is noticed; when a construction model is created, before model operation is integrated, all references including models, drawings, auxiliary lines and the like are deleted; when the construction model is integrated, the whole integration process is completed by adopting the following steps: the consistency of a model, an elevation and a coordinate origin must be ensured in the whole process of binding and ungrouping a link rvt file-a link rvt file; when the elevation of the model floor is defined, the elevation of a certain floor is from the bottom of a column or a wall to the top mark of the upper floor beam, and the elevations of other floors are not defined correctly; if an interlayer or a platform with a large area exists in a building, the interlayer or the platform also has a corresponding independent elevation system, the elevation nomenclature is marked, vertical members and the like must be built in layers, and the appearance of 'high-column access' and 'high-wall access' is strictly forbidden; when the model creating fineness of a horizontal member and the like needs to pay attention to construction application, the division of areas, flow sections and the like is needed; the modeling input data is used for building a BIM standard model, so that the BIM modeling of the engineering cost is rapid and standardized, a management system is more standardized, and the accuracy of the estimated cost is improved;
(2) the construction condition is monitored in real time by arranging the information acquisition module, the timeliness of data is guaranteed, and meanwhile, the formula is used
And obtaining an information feasible value, and adjusting the construction rhythm in real time to ensure that the construction is completed within the construction period.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Thus, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.
As shown in fig. 1, the project cost system based on BIM includes a standard modeling module, an information collecting module, a data standardizing module, a cost module and an accounting module;
the standard modeling module is used for establishing a standardized model to realize the BIM modeling of the engineering cost, which is rapid and standardized; the information acquisition module is used for acquiring all information required by the standard modeling module; the data standardization module is used for standardizing the information acquired by the information acquisition module; the cost module is used for generating a cost list by combining standard modeling information; the accounting module is used for checking by combining the standard modeling and the cost list;
the construction cost module is used for generating a construction cost list by combining standard modeling information, and specifically comprises the following steps:
the method comprises the following steps: acquiring data information in a BIM standard model, and passing the data information through a formula
Obtaining an information feasible value, wherein Cx is an output actual value, namely an actual calculation value; rx is an input expected value or an approximate preset value; b isnIs the planned natural frequency; phi is a damping factor;
wherein, the input expected value or the estimated value is obtained through the feasibility report; the output actual value, namely the actual settlement value is obtained through a BIM standard model; the planned natural frequency is specifically the implementation period of the project; the damping factor is a constant value, specifically 1.
Step two: when the feasibility of the data is greater than the damping factor, recording the data and generating the data into a corresponding cost list;
step three: when the data feasibility is smaller than the damping factor, sending the corresponding data to an accounting module for accounting;
step four: number in the price listAccording to the substitution formula
Obtaining an estimated cost, wherein Y is the estimated cost of the new project; y is0Engineering cost per unit production capacity; x is the production capacity of the new project; x0Capacity per unit; n is a regression index; a is a price variation factor; e is the price index of the building material; n is1The number of years from the price year to the starting year; n is2The number of years from the beginning of the year to the end of the year; wherein, the construction cost of unit production capacity is the construction capacity of a construction party; the production capacity of the newly-built project, specifically, the initial estimated price of the project by the project side; the unit production capacity is obtained by multiplying the construction amount of a single man-hour of each work type construction by the construction duration; the regression index is a fixed value, specifically 0.43; the price variation factor specifically refers to market price fluctuation; the market price fluctuation is specifically worker price fluctuation, mechanical equipment price fluctuation and third-party detection mechanism price fluctuation
When the method is implemented specifically, the standard modeling module is used for establishing a standardized model to realize the BIM modeling of the engineering cost, and the BIM modeling is rapid and standardized;
the modeling standardization strategy specifically comprises the steps of adopting the same DWG file as a modeling basis, using a relative elevation which is a coordinate point of a coordinate origin Z-axis +/-0.000, wherein in order to achieve consistency of the elevation, the elevations used by all specialties need to be unified, and if auxiliary elevations need to be increased actually, corresponding professional codes need to be added in front of the elevations;
in order to make the models work correctly, a reference point (0,0,0) must be established, and the items (0,0,0) are unified by reference to the origin, wherein the principle is to set the shared origin of coordinates at the leftmost lower position of the building of the item;
the length is in millimeter units, and the unit format can be independently set at the size marking style in consideration of size marking and the like which do not need to display rounded 2 decimal places;
the area is in square meters, the volume is in cubic meters, the angle is in degrees, and the slope is in degrees;
according to the requirements of area division in construction, when a post-construction casting belt is encountered, corresponding component models are separately established;
according to the naming standard, models are divided into two categories, namely design models and construction models according to different use stages;
the design model refers to a partitioned model file which is established according to a design drawing and a certain storage mode; the construction model refers to a model which integrates design models into a structural system according to a certain rule, and specifically is a model applied to a construction stage;
in construction, a dangerous source position component is constructed, and as dangerous sources need to be counted in a platform, special modeling processing needs to be carried out on positions of a hole, an adjacent edge, an elevator shaft and the like in a model, corresponding floor families need to be established for the positions of the hole and the elevator shaft, and corresponding railing families need to be established for the positions adjacent to the edge;
for the establishment of the standard layer in the model, if the operation is carried out by adopting a component copying mode, the elevation of the copied layer needs to be changed into the elevation of the current layer, the operation of the elevation deviation of the copied layer cannot be referred, and the difference of component names is noticed;
when a construction model is created, before model operation is integrated, all references including models, drawings, auxiliary lines and the like are deleted; when the construction model is integrated, the whole integration process is completed by adopting the following steps: the consistency of a model, an elevation and a coordinate origin must be ensured in the whole process of binding and ungrouping a link rvt file-a link rvt file;
when the elevation of the model floor is defined, the elevation of a certain floor is from the bottom of a column or a wall to the top mark of the upper floor beam, and the elevations of other floors are not defined correctly; if an interlayer or a platform with a large area exists in a building, the interlayer or the platform also has a corresponding independent elevation system, the elevation nomenclature is marked, vertical members and the like must be built in layers, and the appearance of 'high-column access' and 'high-wall access' is strictly forbidden;
when the model creating fineness of a horizontal member and the like needs to pay attention to construction application, the division of areas, flow sections and the like is needed;
modeling input data is used to build a BIM standard model.
The information acquisition module is used for acquiring all information required by the standard modeling module, and specifically, all information required by the standard modeling module is acquired through the camera acquisition unit, the remote sensing acquisition unit and the aerial photography unit;
the camera shooting acquisition unit can be a camera around a building site and a camera of intelligent equipment; the remote sensing acquisition unit is a remote sensing satellite above a building site; the aerial photographing unit is specifically an aerial model with a photographing and transmitting function;
all information required by the standard modeling module comprises material list information, personnel list and project progress report; wherein the bill of materials information includes the usage and price of cement, steel bar and sandstone; the amount and price of green plants; the staff list comprises construction amount of single man-hour and construction price of single man-hour of each work type construction; the project progress report comprises the completion degree of a single project and the completion degree of the overall project;
the remote sensing satellite is mainly used for collecting construction progress information of large-scale fields, buildings and the like in a construction area; the aerial photography unit is mainly used for shooting pipeline laying, line laying and electromechanical equipment.
The checking module is used for checking in combination with the standard modeling and the cost list, and specifically, the checking is completed by comparing the information acquired by the information acquisition module with the cost list generated by combining the standard modeling information and the cost module and estimating the cost;
the comparison specifically comprises the steps of sending all information required by the modeling module to other engineering cost systems for re-modeling operation to obtain a comparison result, and taking the comparison result as a comparison example for comparison.
When the method is specifically implemented, the building of the BIM model is specifically that a bridge preliminary scheme design is carried out according to engineering feasibility research report achievements, engineering design data, geological engineering design data and hydrological engineering design data, and a three-dimensional BIM scheme model is built; according to the established three-dimensional BIM scheme model, establishing a finite element calculation model in parallel, carrying out structural analysis calculation, forming a mutual feedback mechanism by the finite element calculation model and the three-dimensional BIM scheme model, and carrying out optimization design on the three-dimensional BIM scheme model; forming a construction drawing model according to the optimally designed three-dimensional BIM scheme model, and designing a construction drawing; forming a calculation quantity model according to the three-dimensional BIM scheme model after the optimization design, and calculating the engineering quantity; forming a construction model according to the optimally designed three-dimensional BIM scheme model, and performing construction progress control visual simulation; forming an operation and maintenance model according to the optimally designed three-dimensional BIM scheme model for management and maintenance in a later operation and maintenance stage; wherein, the BIM software can be Revit, Hongye Bimspace, Magicad and Navi sworks software.
The above formulas are all calculated by taking the numerical value of the dimension, the formula is a formula which obtains the latest real situation by acquiring a large amount of data and performing software simulation, and the preset parameters in the formula are set by the technical personnel in the field according to the actual situation.
In the embodiments provided by the present invention, it should be understood that the disclosed apparatus, device and method can be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the modules is only one logical functional division, and there may be other divisions when the actual implementation is performed; the modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the method of the embodiment.
It will also be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.
The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim concerned.
Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the system claims may also be implemented by one unit or means in software or hardware. The terms second, etc. are used to denote names, but not any particular order.
Finally, it should be noted that the above examples are only intended to illustrate the technical process of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical process of the present invention without departing from the spirit and scope of the technical process of the present invention.
Claims (7)
1. The BIM-based project cost system is characterized by comprising a standard modeling module, an information acquisition module, a data standardization module, a cost module and an accounting module;
the standard modeling module is used for establishing a standardized model to realize the BIM modeling of the engineering cost, which is rapid and standardized;
the information acquisition module is used for acquiring all information required by the standard modeling module;
the data standardization module is used for standardizing the information acquired by the information acquisition module;
the cost module is used for generating a cost list by combining standard modeling information;
the accounting module is used for checking by combining standard modeling and a cost list;
the construction cost module is used for generating a construction cost list by combining standard modeling information, and specifically comprises the following steps:
the method comprises the following steps: acquiring data information in a BIM standard model, and passing the data information through a formula
Obtaining an information feasible value, wherein Cx is an output actual value, namely an actual calculation value; rx is an input expected value or an approximate preset value; b isnIs the planned natural frequency; phi is a damping factor;
step two: when the feasibility of the data is greater than the damping factor, recording the data and generating the data into a corresponding cost list;
step three: when the data feasibility is smaller than the damping factor, sending the corresponding data to an accounting module for accounting;
step four: substituting data in the cost list into a formula
Obtaining an estimated cost, wherein Y is the estimated cost of the new project; y is0Engineering cost per unit production capacity; x is the production capacity of the new project; x0Capacity per unit; n is a regression index; a is a price variation factor; e is the price index of the building material; n is1The number of years from the price year to the starting year; n is2The number of years from the beginning of the work year to the end of the work year.
2. The BIM-based project cost system of claim 1, wherein the standard modeling module is used for establishing a standardized model to realize rapid and standardized BIM modeling of project cost, and specifically, the standard modeling module stores a modeling standardization strategy, and modeling input data needs to satisfy the modeling standardization strategy;
the modeling standardization strategy specifically comprises the steps that the same DWG file is used as a modeling basis, a relative elevation is used, and +/-0.000 is a coordinate point of a Z-axis of a coordinate origin, wherein in order to achieve consistency of the elevation, the elevations used by all specialties need to be unified, and if auxiliary elevations need to be added, corresponding professional codes need to be added before the elevations;
in order to make the models work correctly, a reference point (0,0,0) must be established, and the items (0,0,0) are unified by reference to the origin, wherein the principle is to set the shared origin of coordinates at the leftmost lower position of the building of the item;
the length is in millimeter units, and the unit format can be independently set at the size marking style in consideration of size marking and the like which do not need to display rounded 2 decimal places;
the area is in square meters, the volume is in cubic meters, the angle is in degrees, and the slope is in degrees;
according to the requirements of area division in construction, when a post-construction casting belt is encountered, corresponding component models are separately established;
according to the naming standard, models are divided into two categories, namely design models and construction models according to different use stages;
the design model refers to a partitioned model file which is established according to a design drawing and a certain storage mode; the construction model refers to a model which integrates design models into a structural system according to a certain rule, and specifically is a model applied to a construction stage;
in construction, a dangerous source position component is constructed, and as dangerous sources need to be counted in a platform, special modeling processing needs to be carried out on positions of a hole, an adjacent edge, an elevator shaft and the like in a model, corresponding floor families need to be established for the positions of the hole and the elevator shaft, and corresponding railing families need to be established for the positions adjacent to the edge;
for the establishment of the standard layer in the model, if the operation is carried out by adopting a component copying mode, the elevation of the copied layer needs to be changed into the elevation of the current layer, the operation of the elevation deviation of the copied layer cannot be referred, and the difference of component names is noticed;
when a construction model is created, before model operation is integrated, all references including models, drawings, auxiliary lines and the like are deleted; when the construction model is integrated, the whole integration process is completed by adopting the following steps: the consistency of a model, an elevation and a coordinate origin must be ensured in the whole process of binding and ungrouping a link rvt file-a link rvt file;
when the elevation of the model floor is defined, the elevation of a certain floor is from the bottom of a column or a wall to the top mark of the upper floor beam, and the elevations of other floors are not defined correctly; if an interlayer or a platform with a large area exists in a building, the interlayer or the platform also has a corresponding independent elevation system, the elevation nomenclature is marked, vertical members and the like must be built in layers, and the appearance of 'high-column access' and 'high-wall access' is strictly forbidden;
when the model creating fineness of a horizontal member and the like needs to pay attention to construction application, the division of areas, flow sections and the like is needed;
the modeling input data is used for building a BIM standard model.
3. The BIM-based project cost system according to claim 1, wherein the information collection module is used for collecting all information required by the standard modeling module, specifically, collecting all information required by the standard modeling module through the camera collection unit, the remote sensing collection unit and the aerial photography unit;
the camera shooting acquisition unit can be a camera around a building site and a camera of intelligent equipment; the remote sensing acquisition unit is a remote sensing satellite above a building site; the aerial photographing unit is specifically an aerial model with a photographing and transmitting function;
all information required by the standard modeling module comprises material list information, a personnel list and an engineering progress report; wherein the bill of materials information includes the usage and price of cement, steel bar and sandstone; the amount and price of green plants; the staff list comprises construction amount of single man-hour and construction price of single man-hour of each work type construction; the project progress report comprises the completion degree of a single project and the completion degree of the overall project;
the remote sensing satellite is mainly used for collecting construction progress information of large-scale fields, buildings and the like in a construction area; the aerial photography unit is mainly used for shooting pipeline laying, line laying and electromechanical equipment.
4. The BIM-based project cost system of claim 1, wherein the accounting module is configured to perform an examination in combination with the standard modeling and cost inventory, and in particular, the examination is performed by comparing the information collected by the information collecting module with the cost module configured to generate the cost inventory in combination with the standard modeling information and estimate the cost;
the comparison specifically comprises the steps of sending all information required by the modeling module to other engineering cost systems for re-modeling operation to obtain a comparison result, and taking the comparison result as a comparison example for comparison.
5. The BIM-based construction cost system according to claim 1, wherein the BIM-based construction cost system is characterized by the following.
6. The BIM-based construction cost system according to claim 1, wherein the construction cost per unit production capacity, specifically, construction capacity of a construction party; the production capacity of the newly-built project, specifically, the initial estimated price of the project by the project side; the unit production capacity is obtained by multiplying the construction amount of a single man-hour of each work type construction by the construction duration; the regression index is a fixed value, specifically 0.43; the price variation factor specifically refers to market price fluctuation; the market price fluctuation is specifically worker price fluctuation, mechanical equipment price fluctuation and third-party detection mechanism price fluctuation.
7. The BIM-based construction cost system according to claim 1, wherein the inputted expected value approximate budget value is obtained through a feasibility report; the output actual value, namely the actual settlement value is obtained through a BIM standard model; the planned natural frequency is specifically the implementation period of the project; the damping factor is a fixed value, specifically 1.
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