BIM-based three-dimensional geological modeling and geologic body model-based construction application method

Abstract

The invention discloses a BIM-based three-dimensional geological modeling method and a geologic body model-based construction application method, and the BIM-based three-dimensional geological modeling method comprises the steps: building a spatial information database according to various types of exploration data, and then building a geologic body model; reading exploration data such as modelingarea surface point cloud data or contour lines from a spatial information database, and automatically creating a surface model; connecting the surface model to a Surface.PerimeterCurves node packet,and picking up a terrain surface contour line; shifting the replication contour line to the lowest point height of the stratum; grouping the two edge contour lines, stretching and lofting the two edgecontour lines into a body, and creating a geological entity; importing the stratum surface model, and performing Boolean operation on the geological entity and the stratum surface model; and writinggeological information and outputting / storing the geologic body model. According to the invention, automatic modeling is achieved, seamless butt joint of the building BIM model can be achieved, the simulation performance of traditional BIM application such as early-stage planning design, earthwork calculation and site construction simulation can be greatly improved, and the accuracy of geologicalnumerical analysis is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering based on BIM, and in particular relates to three-dimensional geological modeling based on BIM and a construction application method based on a geological body model. Background technique [0002] Geological information usually obtains basic data through drilling and other means, and uses drilling histograms, profiles and survey reports as the main forms of information. This method has long-term engineering experience, and the model and form are more standardized and professional, but it also has certain shortcomings, including inconvenient information access, strong specialization, stacked by a large amount of statistical data, and no effective three-dimensional display effects etc. However, with its powerful 3D rendering capabilities and information integration capabilities, BIM can also interact with a large amount of information with many softwares, and combine with GIS system...

AI Technical Summary

Problems solved by technology

[0004] (1) Manual input of drilling data and manual modeling of rock and soil layers, the modeling workload is heavy and cumbersome, error-prone, modeling efficiency is extremely low and implementation is too difficult;

[0005] (2) When building a 3D geological model, it can only deal with conventional rock and soil strata, and it is difficult to deal with common phenomena such as lens and pinch-out rock and soil strata, and only rough modeling of rock and soil strata can be performed;

[0006] (3) Using Revit software to simulate foundation pit excavation can only be done manually for one rock and soil layer at the same time;

[0007] (4) Lack of calculation and model output interfaces related to geotechnical engineering investigation;

[0008] (5) The application of BIM to 3D geological models is not clear enough

[0009] (6) A relatively accurate geological information model cannot be established for complex geological bodies

[0010] To sum up, there are still many deficiencies and defects in the BIM of the 3D geological model at this stage, and it needs to be improved in the direction of increasing the degree of automation, efficient and accurate modeling, and in the application of the model.

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