Research On BIM Parametric Modeling And Application Of Fabricated Building Based On Dynamo-Python

With the development of information technology,the construction industry has been transformed and upgraded,and more and more construction projects are constructed in a prefabricated way.In the process of prefabricated construction,Building Information Modeling(BIM)technology can provide a good platform for prefabricated construction.The development of BIM technology has increased the vitality of the construction industry and promoted the upgrading of the construction industry.How to combine BIM technology to improve the modeling efficiency of prefabricated buildings through the combination of Dynamo and Python,reduce the probability of rework,and improve work efficiency.This thesis uses BIM technology to carry out related research on the automatic splitting of components in prefabricated buildings,parameterized reinforcement and automatic calculation of prefabrication rate,thereby improving the work efficiency of prefabricated buildings.The main research contents are as follows:(1)Established an automatic splitting method for fabricated components based on Dynamo-Python.Through the analysis of the splitting principles of the components,the overall splitting framework of the components is established,and the splitting rules of the composite beams and the composite slabs are extracted and the splitting process established according to the corresponding specifications,and Dynamo is used for splitting.Realization;through the analysis of prefabricated wall panels,a method to obtain wall panel information is constructed and the information is extracted,and the function of component splitting is realized.(2)Constructed a Dynamo-Python-based parametric generation method for fabricated component reinforcement.According to the relevant atlas,the framework process and realization method for the parametric generation of steel bars in composite beams,composite slabs and prefabricated wall panels are established.According to the characteristics of the corresponding components,the reinforcement of composite beams and composite slabs is based on the original On the basis of cast-in-situ component steel bars,fabricated component steel bars are generated,and the parametric establishment process of different component types of steel bars is constructed,and the parametric generation of composite beams and composite slab reinforcement is completed on the basis of the cast-in-place model;The wall panel component adopts a data-driven model to parametrically generate steel bars.According to the setting of the relevant parameters of the prefabricated wall panel component,the function of parameterized establishment of steel bars is realized.(3)Established an automatic calculation method for assembly rate of prefabricated assembly based on Dynamo-Python.According to the relevant standards,the automatic calculation of the prefabricated assembly rate is realized.Through in-depth analysis of the calculation rules of the prefabricated assembly rate of prefabricated buildings,the relevant requirements of the specific formulas are sorted and summarized.At the same time,the classification and coding method of the prefabricated components is constructed according to the standard rules,and the information extraction principle of the prefabricated components is analyzed and combined Dynamo and Python language realize the function of automatic calculation of prefabricated assembly rate.Through the research of the above-mentioned functions,this thesis constructs a functional integration system based on Dynamo-Python for parametric modeling of prefabricated buildings,which enables the rapid realization of related functions of prefabricated buildings.The related research in this article improves work efficiency,and provides a new solution for the parametric modeling of prefabricated buildings.