According to the guiding spirit of the notice of the Ministry of housing and urban rural development on printing and distributing the guiding opinions on promoting the application of building information model (JJH [2015] No
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159) and the guiding opinions of the general office of Hunan Provincial People’s Government on carrying out the application of building information model (xzbf [2016] No
. 
7), by 2020, BIM integrated application rate of all large and medium-sized buildings invested by the state, public buildings declared for green construction and green ecological demonstration communities shall not be less than 90%
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Building information model (BIM) is more and more widely used in all stages of construction projects
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Construction units establish BIM model in project bidding, and make full use of the three-dimensional expressive force of BIM model and the engineering technical information contained in the technical bidding documents, so as to improve the preparation quality of bidding documents, with intuitive performance, accurate data and fine scheme design, Fully show the technical strength of the bidder and the assumption of the proposed project, and improve the possibility of winning the bid
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In order to win the approval of the owner and improve the probability of winning the bid, the construction unit should adopt various methods to improve the compilation quality and expressiveness of the expression, such as exquisite charts, 3D graphic design, detailed technical parameters, etc
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BIM has five characteristics: visualization, coordination, simulation, optimization and graphing
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Applying BIM model to technical tender can get excellent performance
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And the overall policy and background, also doomed to this is the future development trend: BIM Technology application background and situation, establish BIM model, after the bidding work, in order to apply Bim in all aspects of the tender, we must first establish the engineering BIM model
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The modeling time in the bidding stage is short
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In order to quickly establish the model, the accuracy of the general model should not be too high, just to the floor or construction section, and the important parts, a large number of representative standard floors can be built to the component level
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Because it is a construction bidding, on the basis of building modeling, the construction scheme and process measures should be reflected at the same time, so the construction site, temporary facilities and important large equipment should also be modeled
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After the establishment of the method model for the expression form of the technical tender, the application mode and application content of the model in the tender should be designed according to the requirements of each chapter and relevant content of the tender
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The main contents of the general technical tender include project overview, construction organization and deployment, schedule, construction resource allocation, construction plane deployment, important construction scheme and technology, construction cost, etc Quality and safety measures
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one When inserting BIM model icon into the bidding document, the general situation of the bidding project should be introduced first, including the general situation of the construction, structure, mechanical and electrical decoration and other projects
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The relevant BIM model diagram can be inserted after the relevant general situation is explained in the form of text and chart, so as to improve the bidding performance with intuitive 3D visual effect
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two In the technical bidding document of rendering BIM model, in order to clearly introduce the construction steps, the construction sequence of each partition, the image progress of each important milestone node and the progress degree of related disciplines, the three-dimensional visualization features of BIM model are used to show the construction stages of key projects, and a series of three-dimensional image diagrams (i, Or progress node) to show the image progress of each stage of the project
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In this application, in order to improve the expressiveness, BIM model can be imported into 3DMAX and other professional rendering software
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three The key construction scheme and process video in the technical tender is the core content of the tender
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Using the visual characteristics of BIM model, it is very convenient to simulate the overall implementation of the construction scheme and key working conditions
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four Optimization of site layout in the bidding scheme usually requires reasonable layout of the construction plane, including the design of roads, material storage yard, production, office, living and other temporary facilities
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In these aspects, BIM Technology can be used for modeling aided design, and the design results can be visually displayed in the bidding document
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If necessary, the material consumption of temporary facilities can be automatically counted
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At the same time, it can be compiled and optimized by stages according to the foundation, main structure, decoration, etc., and the design results can be reflected in the tender
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five Optimize the safety management measures and schemes
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In terms of safety measures, BIM can be used to design and optimize the safety protection and construction safety channel in the construction process, and finally it can be displayed in the tender in the form of graphics
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Conclusion based on the five characteristics of BIM, the application of BIM Technology in construction bidding will be more and more extensive, and the forms of expression in bidding will be more diversified and more specific, and gradually penetrate into every chapter of bidding and every aspect of bidding technical content
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In order to prepare technical tender more conveniently with BIM Technology, the parameterization and standardization of BIM model and animation design will become the development trend.
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