一种基于Dynamo的复杂地质体参数化三维建模方法

A Parameterized 3D Modeling Method for Complex Geological Body Based on Dynamo

实际地质体具有信息量巨大、构造复杂等特点,目前工程尺度的地质建模技术普遍存在精度不高、“人机交互”过多等局限。针对这些问题,提出一种基于可视化编程插件Dynamo、在Revit软件中对复杂地质体建立参数化三维地质体模型的方法。该方法通过自编节点,实现对勘探孔点云数据的Kriging插值,生成NURBS地层曲面,进行曲面自行矫正,最后生成包含物理力学性质属性的参数化三维地质体模型。利用该方法,根据上海地区某住宅项目的勘察成果,建立符合真实地层的三维地质模型。实际应用表明该方法能够有效地将勘察成果的数据转化为三维地质体BIM模型,对复杂地质也有较好的模拟效果,且建模效率高于传统建模方法。

Due to the huge amount of geological information and the complexity of the structure in the real geological body,the geological modeling technology in engineering scale generally faces some limitations,such as low precision and too much human-computer interaction.In order to solve these problems,a method based on dynamo,a visual programming plug-in,is proposed to establish parametric 3D geological model of complex geological body in the Revit software.In this method,Kriging interpolation is realized for point cloud data of exploration holes,NURBS formation surface is generated,and surface self correction is carried out.Finally,parametric 3D geological body model including physical and mechanical properties is generated.Based on the survey results of a residential project in Shanghai,a 3D geological model in line with the real stratum is established.The practical application shows that the method can effectively transform the survey data into 3D geological BIM model,and has better simulation effect for complex geology,and the modeling efficiency is higher than that of traditional modeling methods.