Building cost estimation method and system based on BIM technology

Abstract

The invention discloses a building cost estimation method and system based on a BIM technology, and the method comprises the steps: S1, determining project demands, and collecting related data; s2, constructing a BIM (Building Information Modeling); s3, perfecting the BIM model; s4, cost estimation and cost estimation optimization and adjustment are carried out, and collection of related data in the step S1 comprises the following steps: S11, a BIM implementation plan is carried out, a BIM application point and a work flow of a project are determined, and then a BIM design and plan are formulated; and S12, designing a building model drawing by using the BIM, and drawing a preliminary design model according to the design drawing. According to the method, the project requirements are clarified, the BIM model is constructed and perfected, the building cost is estimated by utilizing the building drawing of the basement, the three-dimensional model and other foundations, the estimated building cost is optimized and adjusted, building cost estimation of the basement building based on the BIM technology is facilitated, and the building cost estimation efficiency is improved. The accuracy, integrity and consistency of basement building cost estimation data are improved.

Description

Technical Field

[0001] The present invention relates to the field of BIM technology, and in particular to a construction cost estimation method and system based on BIM technology. Background Art

[0002] BIM technology is not just an architectural drawing software or a 3D modeling program, but a technology that combines geometric information with other attributes through a parametric modeling process. BIM technology can provide comprehensive information about a construction project and share and transmit this information throughout the project's life cycle. BIM technology has a wide range of uses, including the construction of basements.

[0003] A basement usually refers to an underground building space where the height of the room floor is lower than the outdoor ground level by more than one-half of the room's net height. Basements can be divided into ordinary basements and air-raid basements according to their functions, into brick wall structure and concrete structure basements according to structural materials, and into full basements and semi-basements according to structural forms. When a basement is constructed, it usually requires design and a certain construction cost. The construction cost usually requires professionals to use a rough calculation method to estimate the statistics, but this method may result in deviations in the construction cost. Therefore, when constructing a basement, it is necessary to estimate the construction cost of the basement based on BIM technology. Summary of the invention

[0004] The purpose of the present invention is to provide a construction cost estimation method and system based on BIM technology to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a construction cost estimation method based on BIM technology, comprising the following specific steps:

[0006] S1: Clarify project requirements and collect relevant information;

[0007] S2: Build a BIM model to provide an accurate 3D model of the basement building, including all building elements, equipment and materials. In the BIM model, data from various departments can be integrated and shared.

[0008] S3: Improve the BIM model, improve the basement building model constructed in step S2, and add supplementary information;

[0009] S4: Cost estimation, and optimization and adjustment of cost estimation.

[0010] Preferably, the collection of relevant information in step S1 includes the following steps:

[0011] S11: BIM implementation plan, determine the BIM application points and workflow of this project, and then formulate BIM design and plan;

[0012] S12: Use BIM to design architectural model drawings, draw preliminary design models based on design drawings, and then check collisions based on BIM models, review various net heights, review ramps, lanes, parking spaces and feasibility, and summarize them into reports to feedback to the design team to review the design model. After the review, assist the design team in coordinating and optimizing the mechanical and electrical equipment pipeline design of the project in a three-dimensional environment based on the BIM model and problem report, and then track closed problems and implement them on the design drawings, and finally output BIM model drawings;

[0013] S13: Analyze the building net height, conduct design feedback, synchronize the management system, and then obtain the net height results, and combine the BIM 3D model to obtain the building drawings;

[0014] S14: Collect information on design specifications, material lists, and construction plans, and use them together with architectural drawings to form the basis for cost estimation of the BIM model.

[0015] Preferably, constructing the BIM model in step S2 includes the following steps:

[0016] S21: Choose appropriate BIM software according to project requirements;

[0017] S22: Use BIM software to gradually build a digital model of the building based on the collected data;

[0018] S23: Add relevant information as a basis for subsequent cost estimates.

[0019] Preferably, the construction of the digital model in step S22 includes the creation and combination of architectural elements such as walls, doors, windows, stairs and pipes, and the relevant information in step S23 includes material properties, construction technology and time information added to the model.

[0020] Preferably, improving the BIM model in step S3 includes the following steps:

[0021] S31: Refine the BIM model. Further refine the BIM model to make it more accurate and complete. The various details of the BIM model are processed in detail. The refinement process includes adding more detail elements and adjusting material properties.

[0022] S32: Verify the model to ensure the accuracy, completeness and consistency of the BIM model.

[0023] Preferably, the cost estimation in step S4 includes the following steps:

[0024] S41: Direct cost estimate. Direct cost estimate includes:

[0025] First: Calculate the total cost of materials based on the material list and attributes in the BIM model and combined with market prices;

[0026] Second: Calculate labor costs based on the construction process and time information in the BIM model and the local labor market price;

[0027] Third: Calculate the machinery cost based on the construction machinery demand in the BIM model and the machinery rental or purchase price;

[0028] S42: Indirect cost estimation, indirect cost estimation includes:

[0029] First: Calculate management expenses based on the actual situation of project management, including the salaries and office expenses of project management personnel;

[0030] Second: Calculate other costs based on the actual situation of the project, including insurance, taxes and design fees.

[0031] Preferably, the cost estimation optimization and adjustment in step S4 includes the following steps:

[0032] Step 1: Analyze the cost estimation results in detail and find out the errors and unreasonableness in the cost estimation results;

[0033] Step 2: Based on the cost estimate analysis results, optimize and adjust the cost estimate to make it within a reasonable and accurate range;

[0034] Step 3: Develop a cost control plan based on the cost estimation results.

[0035] Preferably, the cost control plan in step three includes cost control objectives, measures and responsibility allocation to keep project costs under control.

[0036] The present invention also provides a construction cost estimation system based on BIM technology, including a construction cost estimation system, wherein the construction cost estimation system includes:

[0037] A building information model module, which is used as the core of the estimation system and contains all the detailed information of the construction project, and the detailed information is used as the basis for the construction cost estimation;

[0038] A cost database module, which is based on BIM technology and contains cost information of various components, equipment and man-hours, and establishes a cost database to provide a basis for building cost estimation;

[0039] A cost calculation model module, which is used to analyze the building information model and the cost database to calculate and estimate the building cost;

[0040] A user interface and an interaction module, wherein the user interface and the interaction module are used as an interface for a user to interact with the construction cost estimation system;

[0041] A management module, which is used to manage construction costs, resources and basic data;

[0042] A network module, which is used to connect the construction cost estimation system to the Internet to provide a display viewing channel and to upload the estimation data;

[0043] The building information model module, the cost database module, the cost calculation model module, the user interface and interaction module, the management module and the network module are all connected in a data interaction manner.

[0044] Preferably, the management module includes:

[0045] Cost management module, which is used to control the cost of construction projects and prevent the risk of cost overruns caused by changes;

[0046] A resource management optimization module, which is used to integrate with the Internet of Things technology to achieve real-time tracking and monitoring of construction site resources, including material consumption and equipment operating conditions;

[0047] Basic data management upgrade module, which is used to add real-time update and prediction functions of market prices on the original basis, establish a more comprehensive market price network platform, and provide more reliable data support for construction project decision-making;

[0048] The expense management module, resource management optimization module and basic data management upgrade module are connected by means of data transmission.

[0049] Technical effects and advantages of the present invention:

[0050] (1) The present invention clarifies project requirements, collects relevant information, constructs a BIM model, and improves the BIM model, and then estimates the construction cost based on the architectural drawings and three-dimensional models of the basement, and optimizes and adjusts the estimated construction cost, which is conducive to estimating the construction cost of the basement building based on BIM technology, so as to improve the accuracy, completeness and consistency of the basement construction cost estimation data;

[0051] (2) The present invention utilizes a setting method that coordinates a building information model module, a cost database module, a cost calculation model module, a user interface and an interaction module, a management module, and a network module, thereby facilitating the estimation of basement construction costs based on BIM technology and establishing a construction cost database. The construction cost database can be uploaded and basic data management, resource management, and expense management can be further strengthened to improve the accuracy of construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 It is a schematic diagram of the flow chart of the construction cost estimation method of the present invention.

[0053] Figure 2 It is a schematic diagram of the process of collecting relevant information of the present invention.

[0054] Figure 3 The figure is a flow chart of the steps of constructing a BIM model in the present invention.

[0055] Figure 4 The present invention is to improve the BIM model step flow chart.

[0056] Figure 5 It is a schematic diagram of the cost estimation process of the present invention.

[0057] Figure 6 It is a block diagram of the construction cost estimation system of the present invention.

[0058] Figure 7 This is a block diagram of the management module of the present invention. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] The present invention provides Figure 1-7 A construction cost estimation method based on BIM technology is shown, which includes the following specific steps:

[0061] S1: Clarify project requirements and collect relevant information. The collection of relevant information in step S1 includes the following steps:

[0062] S11: BIM implementation plan, determine the BIM application points and workflow of this project, and then formulate BIM design and plan;

[0063] S12: Use BIM to design architectural model drawings, draw preliminary design models based on design drawings, and then check collisions based on BIM models, review various net heights, review ramps, lanes, parking spaces and feasibility, and summarize them into reports to feedback to the design team to review the design model. After the review, assist the design team in coordinating and optimizing the mechanical and electrical equipment pipeline design of the project in a three-dimensional environment based on the BIM model and problem report, and then track closed problems and implement them on the design drawings, and finally output BIM model drawings;

[0064] S13: Analyze the building net height, conduct design feedback, synchronize the management system, and then obtain the net height results, and combine the BIM 3D model to obtain the building drawings;

[0065] S14: Collect information on design specifications, material lists and construction plans, and use them together with architectural drawings as the basis for BIM model cost estimation;

[0066] S2: Construct a BIM model to provide an accurate three-dimensional model of the basement building, including all building elements, equipment and materials. At the same time, in the BIM model, the data of various departments can be integrated and shared. Constructing the BIM model in step S2 includes the following steps:

[0067] S21: Choose appropriate BIM software according to project requirements;

[0068] S22: Use BIM software to gradually build a digital model of the building based on the collected data;

[0069] S23: Add relevant information as a basis for subsequent cost estimates.

[0070] The construction of the digital model in step S22 includes the creation and combination of architectural elements such as walls, doors, windows, stairs and pipes, and the relevant information in step S23 includes material properties, construction processes and time information added to the model;

[0071] S3: Improve the BIM model, improve the basement building model constructed in step S2, and add supplementary information. Improvement of the BIM model in step S3 includes the following steps:

[0072] S31: Refine the BIM model. Further refine the BIM model to make it more accurate and complete. The various details of the BIM model are processed in detail. The refinement process includes adding more detail elements and adjusting material properties.

[0073] S32: Verify the model to ensure the accuracy, completeness and consistency of the BIM model;

[0074] S4: Cost estimation, and optimization and adjustment of cost estimation. The cost estimation in step S4 includes the following steps:

[0075] S41: Direct cost estimate. Direct cost estimate includes:

[0076] First: Calculate the total cost of materials based on the material list and attributes in the BIM model and combined with market prices. The material calculation formula is as follows:

[0077] Material cost = material unit price × material quantity;

[0078] Second: Calculate labor costs based on the construction process and time information in the BIM model and the local labor market price. The labor cost calculation formula is as follows:

[0079] Labor cost = labor unit price × number of working hours;

[0080] Third: Calculate the machinery cost based on the construction machinery demand in the BIM model and the machinery rental or purchase price. The machinery cost calculation formula is as follows:

[0081] Machinery cost = machinery unit price × usage time;

[0082] S42: Indirect cost estimation, indirect cost estimation includes:

[0083] First: Calculate management expenses based on the actual situation of project management, including the salaries and office expenses of project management personnel;

[0084] Second: Calculate other costs based on the actual situation of the project, including insurance, taxes and design fees.

[0085] The cost estimation optimization and adjustment in step S4 includes the following steps:

[0086] Step 1: Analyze the cost estimation results in detail and find out the errors and unreasonableness in the cost estimation results;

[0087] Step 2: Based on the cost estimate analysis results, optimize and adjust the cost estimate to make it within a reasonable and accurate range;

[0088] Step 3: Based on the cost estimation results, formulate a cost control plan, which includes cost control objectives, measures and responsibility allocation to keep project costs under control.

[0089] A construction cost estimation system based on BIM technology, including a construction cost estimation system, wherein the construction cost estimation system includes:

[0090] Building Information Modeling module: The building information modeling module is used as the core of the estimation system. It contains all the detailed information of the construction project. The detailed information serves as the basis for the construction cost estimation. The detailed information includes the construction quantity, size and material. Through BIM technology, the construction project can be modeled in three dimensions to achieve information integration and sharing;

[0091] Cost database module: The cost database module is used to build on the BIM technology, including the cost information of various components, equipment and labor hours, and to establish a cost database to provide a basis for building cost estimation. By continuously updating and maintaining the cost database, the accuracy and timeliness of cost estimation can be ensured;

[0092] Cost calculation model module: The cost calculation model module is used to analyze the building information model and cost database, calculate and estimate the construction cost, and is conducive to automatically extracting the engineering quantity information in the BIM model and combining it with the cost data in the cost database to generate a detailed cost estimation report, which greatly improves the efficiency and accuracy of cost estimation;

[0093] User interface and interaction module: The user interface and interaction module is used as an interface for users to interact with the construction cost estimation system. It provides an intuitive and easy-to-use interface design, allowing users to easily input project information, view cost estimation results, and perform data analysis. It is also conducive to integration and data exchange with other systems, improving the flexibility and scalability of the system.

[0094] Management module: The management module is used to manage construction costs, resources and basic data. The management module includes:

[0095] Cost management module: The cost management module is used to control the cost of construction projects, prevent the risk of cost overruns caused by changes, and increase support for change management, including the processes of receiving, reviewing, approving and executing change requests, as well as real-time calculation and display of the impact of changes on costs;

[0096] Resource management optimization module: The resource management optimization module is used to integrate with the Internet of Things technology to achieve real-time tracking and monitoring of construction site resources, including material consumption and equipment operation status;

[0097] Basic data management upgrade module: The basic data management upgrade module is used to add real-time update and prediction functions of market prices on the original basis, establish a more comprehensive market price network platform, and provide more reliable data support for construction project decision-making;

[0098] The expense management module, resource management optimization module and basic data management upgrade module are connected through data transmission;

[0099] Network module, which is used to connect the construction cost estimation system to the Internet to provide a display viewing channel and upload the estimation data;

[0100] The building information model module, the cost database module, the cost calculation model module, the user interface and interaction module, the management module and the network module are all connected through data interaction.

[0101] Working principle of the present invention:

[0102] Clarify the project requirements for the basement construction purpose, then collect relevant information about the basement construction, and then use BIM technology to build a BIM model and improve the BIM model. After improvement, estimate the cost, optimize and adjust the cost estimate, and finally get the construction cost of the basement.

[0103] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A construction cost estimation method based on BIM technology, characterized in that: The specific steps include: S1: Clarify project requirements and collect relevant information; S2: Build a BIM model to provide an accurate 3D model of the basement building, including all building elements, equipment and materials. In the BIM model, data from various departments can be integrated and shared. S3: Improve the BIM model, improve the basement building model constructed in step S2, and add supplementary information; S4: Cost estimation, and optimization and adjustment of cost estimation.

2. A construction cost estimation method based on BIM technology according to claim 1, characterized in that: The collection of relevant information in step S1 includes the following steps: S11: BIM implementation plan, determine the BIM application points and workflow of this project, and then formulate BIM design and plan; S12: Use BIM to design architectural model drawings, draw preliminary design models based on design drawings, and then check collisions based on BIM models, review various net heights, review ramps, lanes, parking spaces and feasibility, and summarize them into reports to feedback to the design team to review the design model. After the review, assist the design team in coordinating and optimizing the mechanical and electrical equipment pipeline design of the project in a three-dimensional environment based on the BIM model and problem report, and then track closed problems and implement them on the design drawings, and finally output BIM model drawings; S13: Analyze the building net height, conduct design feedback, synchronize the management system, and then obtain the net height results, and combine the BIM 3D model to obtain the building drawings; S14: Collect information on design specifications, material lists, and construction plans, and use them together with architectural drawings to form the basis for cost estimation of the BIM model.

3. The construction cost estimation method based on BIM technology according to claim 1 is characterized in that: The step S2 of constructing the BIM model includes the following steps: S21: Choose appropriate BIM software according to project requirements; S22: Use BIM software to gradually build a digital model of the building based on the collected data; S23: Add relevant information as a basis for subsequent cost estimates.

4. The construction cost estimation method based on BIM technology according to claim 3 is characterized in that: The construction of the digital model in step S22 includes the creation and combination of architectural elements such as walls, doors, windows, stairs and pipes, and the relevant information in step S23 includes material properties, construction technology and time information added to the model.

5. The construction cost estimation method based on BIM technology according to claim 1 is characterized in that: Improving the BIM model in step S3 includes the following steps: S31: Refine the BIM model. Further refine the BIM model to make it more accurate and complete. The various details of the BIM model are processed in detail. The refinement process includes adding more detail elements and adjusting material properties. S32: Verify the model to ensure the accuracy, completeness and consistency of the BIM model.

6. The construction cost estimation method based on BIM technology according to claim 1 is characterized in that: The cost estimation in step S4 includes the following steps: S41: Direct cost estimate. Direct cost estimate includes: First: Calculate the total cost of materials based on the material list and attributes in the BIM model and combined with market prices; Second: Calculate labor costs based on the construction process and time information in the BIM model and the local labor market price; Third: Calculate the machinery cost based on the construction machinery demand in the BIM model and the machinery rental or purchase price; S42: Indirect cost estimation, indirect cost estimation includes: First: Calculate management expenses based on the actual situation of project management, including the salaries and office expenses of project management personnel; Second: Calculate other costs based on the actual situation of the project, including insurance, taxes and design fees.

7. The construction cost estimation method based on BIM technology according to claim 1 is characterized in that: The cost estimation optimization and adjustment in step S4 includes the following steps: Step 1: Analyze the cost estimation results in detail and find out the errors and unreasonableness in the cost estimation results; Step 2: Based on the cost estimate analysis results, optimize and adjust the cost estimate to make it within a reasonable and accurate range; Step 3: Develop a cost control plan based on the cost estimation results.

8. The construction cost estimation method based on BIM technology according to claim 7 is characterized in that: The cost control plan in step three includes cost control objectives, measures and responsibility allocation to keep project costs under control.

9. A construction cost estimation system based on BIM technology, comprising a construction cost estimation system, characterized in that: The construction cost estimation system comprises: A building information model module, which is used as the core of the estimation system and contains all the detailed information of the construction project, and the detailed information is used as the basis for the construction cost estimation; A cost database module, which is based on BIM technology and contains cost information of various components, equipment and man-hours, and establishes a cost database to provide a basis for building cost estimation; A cost calculation model module, which is used to analyze the building information model and the cost database to calculate and estimate the building cost; A user interface and an interaction module, wherein the user interface and the interaction module are used as an interface for a user to interact with the construction cost estimation system; A management module, which is used to manage construction costs, resources and basic data; A network module, which is used to connect the construction cost estimation system to the Internet to provide a display viewing channel and to upload the estimation data; The building information model module, the cost database module, the cost calculation model module, the user interface and interaction module, the management module and the network module are all connected in a data interaction manner.

10. A construction cost estimation system based on BIM technology according to claim 9, characterized in that: The management module comprises: Cost management module, which is used to control the cost of construction projects and prevent the risk of cost overruns caused by changes; A resource management optimization module, which is used to integrate with the Internet of Things technology to achieve real-time tracking and monitoring of construction site resources, including material consumption and equipment operating conditions; Basic data management upgrade module, which is used to add real-time update and prediction functions of market prices on the original basis, establish a more comprehensive market price network platform, and provide more reliable data support for construction project decision-making; The expense management module, resource management optimization module and basic data management upgrade module are connected by means of data transmission.

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