The Study On Application Of Three-dimensional Modeling In A Bridge's Foundation By Using The Software Named GOCAD

The thesis takes the Tiger Hill which is the north base of the Xi Dunmen bridge in Zhoushan city as an illustration.Combined the theory and method of the three -dimensional(3D) geological modeling with the geologic environmental survey of Tiger Hill,and Making use of the professional three-dimensional geological modeling software GOCAD(Geological Object Computer Aided Design),the 3D geological visualized modeling of Tiger Hill is built up.The modeling can show the geologic structure of the underground information in vivid detail.Meanwhile it provides a kind of new methods for personnel engaging in the engineering geologic quality assessment which can help them analysis the engineering geologic phenomenon and master the structure regulation in rock and soil body,etc.Then the means tried by author improves the research method of the engineering geologic quality analysis,compared with the former research method.Making use of the professional 3D geological modeling software GOCAD,and combined the landform data with the wells data,4 main layer in the research area have been built up so that the 3D geological modeling can be constructed. Meanwhile,in virtue of its powerful disposal function the problems such as deficiency and nip-out of the layers have been solved,so a visual and intuitionistic 3D geological modeling is built up.On the base of the 3D geological visualized modeling which has been built up, First,it realize the function of discretionarily incising sections to provide a effective artifice for understanding the geologic structure in depth.Second,through making use of the DSI and Kriging interpolations,the finite property in the wells can well be interpolated into the whole 3D geological modeling,and on the modeling,you can get the property by mouse click.Then this method has important meaning for analyzing varieties of geological information on the distributing characters in the whole modeling, In the paper,the established modeling can not only deepen whole understanding of the engineering geologic environment by a series of diagram,but also be out put in other forms of data documents,as the same time the geology information can be queried directly in the software.The production can be conveniently input to other geography information system software in the subsequent work,which will reduce the workload.On the whole,on the base of the date of field-surveyed it interpolates and simulates the landform,geologic layers,then builds up the three-dimensional geologic modeling of one talus slope.Meanwhile it shows the geological structure of underground by the three-dimensional visualization and you can discretionarily incise sections to get an in-depth understanding of the geological structure.Through the foundation of the three-dimensional modeling,it provides a kind of new method for personnel engaging in the geologic engineering which can help the analysis about the stability of a talus slope and numerical simulation,and on the other it let personnel who don't engage in the geologic engineering have a intuitive feel and recognition to the three-dimensional geological structure.