Development And Application Of BIM Modeling And Analysis System For Dredging Engineering During Survey And Design Stages

With the sustainable development of economic globalization and the implementation of the Belt and Road Initiative,a mass of infrastructure projects such as ports,waterways and artificial islands have started its construction successively,and dredging engineering industry has been developed rapidly.Due to the characteristics of the industry and the constraints on the development scale,several advanced technicals in other engineering fields have not been deployed to the front line of dredging engineering survey and design stages.Therefore,based on demands of survey and design in dredging engineering,the key technologies and methods of BIM(Building Information Modeling)modeling and analysis are deeply studied in this paper,and the BIM modeling and analysis system for dredging engineering during the survey and design stages,named TDBIM,is developed.Combined with practical engineering,applied analysis research is carried out as well.The main contents and achievements are as follows:(1)The framework of BIM modeling and analysis system that is suitable for dredging engineering survey and design stages is designed.Based on the forms of SQL Server database,an engineering information database,whose information integrated with 3D(three-dimensional)model using BIM technology,is constructed.Through a series of processes such as collecting and standardizing engineering information,3D modeling and BIM comprehensive analysis,the overall function module of TDBIM system which is applied to actual dredging engineering is integrated and developed.(2)Based on the multi-source survey data,the novel method of constructing 3D geological body information model for dredging engineering is put forward.According to water depth data,a 3D underwater terrain model based on water depth point convex envelope curve searching is built.In the light of borehole data,the human-machine interaction modeling of 3D soil model is realized through NURBS technology.Inspired by the thought of parametric modeling,the novel method of automatic building and dynamic updating of 3D soil model is proposed with graphical programming and computational geometry technology.3D geological body information model is mainly composed of 3D soil model and 3D underwater terrain model,which is integrated with survey information.In view of ADO.Net technology,real-time addition,deletion,modification and query of corresponding information is performed.(3)Parametric modeling method for 3D family component information model in dredging engineering is proposed.3D family component information model integrated with parameter information is created and modified.In particular,a 3D modeling method for dredging channel with arbitrary bottom faces is presented and implemented.According to computer graphics and computational geometry,there are only a few key parameters needed to build 3D dredging channel information model.(4)A series of multi-scale applied analysis techniques of dredging engineering information based on 3D BIM model is established,including multi-scale dredging engineering quantity calculation,collaborative design and analysis,productivity prediction analysis of dredger,etc.It provides powerful technical measures for multi-scale analysis of dredging engineering during the survey and design stages.(5)The above theories,techniques and methods have been applied to the development of BIM modeling and analysis system(TDBIM)for dredging engineering survey and design stages.Taking a dredging project as an example,the TDBIM system is applied systematically and successfully,which can effectively assist the dredging engineers to carry out their business more efficiently during the survey and design stages,and realize the integration of BIM modeling and analysis.