Research On The Building Information Modeling Applied To Spread Footing Gravity Anchorage Parametric Design

Building Information Modeling has been introduced to China for decades and is undergoing continuous development.The applications of BIM have been gradually expanded.It is very popular in the field of bridge engineering.The research results and practical applications have brought blowout trends.The digital construction based on BIM concept will pave the way for informatization,parameterization and intellectualization of engineering construction technology.Consequently,bridge design methods,construction technologies and information management will gradually change.Based on the development of BIM technology in the field of bridge engineering,this thesis carries out the research on the parametric design of the spread footing gravity anchorage.The specific contents of the research are as follows:1.On the basis of both domestic and foreign researches,the thesis seeks to conclude the methods of BIM parametric design and BrIM applications while comparing the parameterization capabilities among the main BIM software.Simultaneously,a proposal of the BIM parametric design flow for the spread footing gravity anchorage according to the experience of designing and constructing suspension bridge anchorage in the past few years is given.2.Based on the level of development and the product breakdown structure principle,the parametric models of concrete structures and steel-made systems of gravity anchorage are created via Revit Families.Also,the visual programming tool is used to realize the automatic assembly of parametric models and the data management of input and output parameters.In this way,the application of the parametric model is conducted and the structure analysis results and the quantity takeoff are obtained.3.The BIM-based parametric spread footing gravity anchorage model is applied to the anchorage structure of Baiyang Bridge as an example.In this case,the 3D model is efficiently created by this method and the layout of cable anchorage system is automatically generated.The engineering information and anchorage model are integrated and linked by the software Navisworks.The visual simulation of the construction process of concrete block pouring is conducted and the clash detective between concrete structures and steel-made anchorage system is operated.All these applications assist the construction design of spread footing gravity anchorage.After the analysis of primary design of one side’s anchorage,several designs of anchorage structures,including the choice of two different types of cable anchorage system,are proposed.Finally,these design plans are compared according to the analysis of output results by inputting parameters as cable tension,geological conditions and material properties.